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G.W. K. "The Acute Leukaemias (Review article) ." EAMJ. 1986;(63):756.
G.W. K. "Haemophilia and Allied Disorders in Kenya.". In: International Haemophilia congress 1980. Bonn, Germany ; 1982.
G.Okeyo MUMBA, N.Maonga M, Malo.J.Otieno. "CREATION OF THE UNIVERSE FROM A NON CLASSICAL SPACE-TIME STATE. .". 2011. Abstract

Topological methods are used to study the creation of the universe from the initial hot state.It is found that the universe emerges from the initial compact stste with a finite size to an initial symmetric state and later evolves along the lines of the inflationary scenario to its asymmetric global minimum.The tunneling probability from this compactified state to a classical state(observable universe)rapidly approaches unity at very high temperatures where the particle masses are dominated by radiationThis inicates that the inital hot state is necessary for spontaneous quantum tunneling occur.
The bg bang singularity observed in the standard cosmological model is absent in this model.The result agrees to some extent with that that of refence for where a cosmological model is suggested in which the universe is spontaneosly created from nothing.It is this nothing that we interprete as the 'non classical space -time state' or 'instanton' in this paper.

G.O.Oyoo, F.A.Odhiambo. "Treatment of systemic lupus erythematosus.". 2006.
G.O.Oyoo, E. N. Ogola, E.N.Amayo. "Cardiovascular risk factors and carotid atherosclerosis in patients with systemic lupus erythematosus at Kenyatta National Hospital." Afr J Rheumatol. 2014;2(2)(1):1-17. Abstractcardiovascular_risk_factors-1.pdf

Background: Cardiovascular disease is
now acknowledged as a primary cause of
morbidity and mortality in patients with
Systemic Lupus Erythematosus (SLE).
The risk of developing coronary artery
disease in these patients is four to eight
times higher than that in the normal
population. Prior to this study there was
no data regarding cardiovascular risk in
SLE patients in our setting.
Objective: To determine the prevalence
of selected cardiovascular risk factors
and carotid atherosclerosis in patients
with systemic lupus erythematosus at
Kenyatta National Hospital.
Methods: This was a cross-sectional
survey carried out in patients with SLE
and age- and sex-matched controls at
the Kenyatta National Hospital. The SLE
patients underwent clinical assessment
of their blood pressure, weight, height,
waist and hip circumferences as well as
laboratory testing to determine their
fasting blood sugar and fasting lipid
pro le. In addition, measurement of
carotid Intima-Media Thickness (IMT)
and assessment for presence of carotid
plaque was done for the lupus patients.
The controls had similar clinical and
laboratory assessment done as for
patients. Carotid ultrasonography was
however not done for controls.
Results: Sixty six SLE patients and 66
healthy controls participated in this
study. Mean age of the patients was
35.9 years, with a female to male ratio
of 21:1 and median duration of illness
of two years. Hypertension prevalence
was 42.4% in the patients and 24.2%
in the controls (p=0.027), dyslipidemia
occurred in 74.2% of the patients and
62.1% of the controls (p=0.135) while
diabetes prevalence was 4.5% in patients
and 1.5% in controls (p=0.619). Obesity
by Body Mass Index (BMI) assessment
was found in 12.1% of patients and
21.2% of the controls (p=0.330) whereas
abdominal obesity (by waist: hip ratio)
occurred in 33.3% of patients and 24.2%
of controls (p=0.249). Mean carotid IMT in
SLE patients was 0.63mm (SD=0.15) with
9 (13.6%) patients having IMT readings
of 0.8mm and above. Carotid plaque was
detected in 15 (22.7%) patients. Carotid
IMT and BMI signi cantly correlated with
disease duration (p values= 0.006 and
0.021 respectively).
Conclusion: There was a high preva-
lence of atherosclerosis and selected
cardiovascular risk factors in this popu-
lation of SLE patients. Hypertension was
signi cantly more common in the lupus
patients than controls. Cardiovascular
risk assessment and appropriate treat-
ment of risk factors identi ed should be
enhanced in patients with SLE.
Key words: Systemic lupus erythemato-
sus, Cardiovascular risk factors, Carotid
intima-media thickness, Carotid

G.O.Oyoo, F.Adelowo. "AfricanJournal ofRheumatology Systemic.". In: ISSN. Vol. 1.; 2013:. Abstractafrica_journal_rheumatology.pdf

Background: Hepatitis C Virus (HCV)
infection is a worldwide burden whose
seroprevalence is higher in developing countries with Cameroon being the
third most aff ected country in Africa.
HCV both a hepatotropic and lympho-
tropic infection is responsible for a great
number of hepatic and extra hepatic
disorders some of which are rheumatic
in nature. These rheumatologic mani-
festations though extensively studied
in western countries; there is little or no
data in sub-Saharan Africa.
Objective: The study was conducted
with the aim to describe the musculo-
skeletal manifestations associated to
HCV infection in a hospital setting in
Cameroon.
Design: A cross-sectional study.
Setting: Three hospitals in Cameroon:
the Douala General Hospital, a tertiary
referral hospital with a capacity of 320
beds in Douala, the largest city and
economic capital of Cameroon; the
University Teaching Hospital of the
Faculty of Medicine and Biomedical
Sciences of the university of Yaoundé
1, a 240 beds hospital in Yaoundé the
political capital of Cameroon and the
“Centre Médical de la Cathédrale”,
a private acceptable standard
Gastroenterology clinic also found in
Yaoundé.
Patients and methods: From February
to June 2009, we did a multicentric
cross-sectional study of patients from
the Gastroenterology, Rheumatology
and Internal medicine outpatient clinics
of three hospitals in Cameroon. Patients
with HIV or HBV infection and those on
antiviral treatment were excluded.
Results: Among 148 patients with HCV
infection identifi ed during the study
period, only 62 fulfi lled eligibility, 15
(24.2%) of whom had musculoskeletal
manifestations related to HCV, the
commonest of which were myalgia
9/62 (14.5%) , arthritis 6/62 (9.7%), bone
pain 6.4% (4/62), sicca syndrome 3/62
(4.8%), and Raynaud’s phenomenon
6/62 (9.7%). Among patients with
rheumatologic manifestations, 9/15
(60%), had rheumatologic symptoms at
HCV diagnosis and in 6/15 (40%). HCV
infection was discovered during routine
medical check-up. Musculoskeletal
manifestations were neither associat ed
with the genotype (p=0.17) nor with the
viral load (p>0.98).
Conclusion: Arthralgia is the most
common presenting feature of the
symptomatic disease. Musculoskeletal
manifestations may be confused with symptoms of common tropical infections, leading to delayed diagnosis
and treatment of HCV infection.
Key words: Hepatitis C Virus, Arthralgia,
Extra hepatic manifestations; Africa
Introduction
Hepatitis C Virus (HCV) infection
which occurs worldwide has a higher
seroprevalence in Africa, estimated
at 5.3% compared to about 1.03%
in Europe1,2. Cameroon, the third
most affected country in Africa, has a
seroprevalence which varies from as low
as 0.6% to 4.8% in Pygmy groups and
blood donors, to as high as 13% in hospital
based studies4,5. Hepatitis C virus (HCV)
which is a single-stranded, spherical RNA enveloped fl avivirus, measuring 38 to 50
nm in diameter has multiple genotypes
and quasispecies classifi ed in six major
clades. This genetic diversity confers to
this virus a difference in pathogenicity,
disease severity, and response to treatment
with interferon3. Though considered a
hepatotropic virus, HCV’s lymphotropic
nature is responsible for a great number of
extra hepatic immune system disorders1.
About 40 to 70% of affected patients will
develop an extra hepatic manifestation
that can have a rheumatic nature

G.O.Oyoo, E.Busulwa. "Solvent abuse: A case report.". 2006.
G.O.Oyoo, A.A.Amayo, A.O.Oyunga. "Performance characteristics of anti-cyclic citrullinated peptide and rheumatoid factor tests in rheumatoid arthritis and undifferentiated arthritis at Kenyatta National Hospital." EAJP. 2014;1(1):23-27. Abstractperformance_characteristics.pdf

Background: The rheumatoid factor (RF) test has been the main serological test for
diagnosis of rheumatoid arthritis. Reports of it’s low sensitivity and specificity led to the
introduction of anti cyclic citrullinated peptide (anti CCP) test, which was added to the
diagnostic criteria. The analytical method and cost of the anti CCP test limits its availability
in resource constrained environments.
Objective: To determine the analytical performance characteristics of anti CCP in patients
with rheumatoid arthritis (RA) and undiffentiated arthritis (UA), and compare with those of RF.
Design: Cross-sectional study.
Methodology: The study subjects comprised 64 RA and 31 UA patients. Serum anti CCP
was measured using an automated immunoassay and 3rd generation anti-CCP test. RF was
determined using a qualitative particle agglutination method. Manufacturer cut-offs were
used for interpretation of results. Sensitivity, specificity, negative and positive predictive
values were calculated and compared, for anti-CCP and RF tests.
Results: Anti CCP showed a higher sensitivity than RF (62.5% versus 50%). Specificity
was however higher with RF (90.3%) than anti-CCP (83.9%). RF also had a slightly higher
positive predictive value (91.4%) than anti-CCP (88.9%). Combining RF and anti-CCP tests
led to a slightly higher sensitivity and negative predictive values than those obtained with
RF alone but not specificity or positive predictive values.
Conclusion: Although the anti CCP test has shown better sensitivity than RF in RA, there
was slightly higher specificity and positive predictive value with RF compared with anti-
CCP. The findings show that the latex RF test is an effective test for initial evaluation of
patients with arthritis.

G.O.Oyoo, D.K.Katukui, J.Rajab. "Serum erythropoietin in patients with anaemia on HAART attending the Kenyatta National Hospital, Comprehensive Care Centre." EAJP. 2014;Vol. 1(1):2-6. Abstractserum_erythropoietin.pdf

Background: Anaemia is the leading haematological abnormality in HIV/AIDS and an
independent contributor to morbidity and mortality. HAART has been shown to be effective
in reversing anaemia in HIV/AIDS, however a significant proportion of patients remain
anaemic despite being on antiretroviral therapy. Deficiency of erythropoietin has been
demonstrated as a cause of anaemia in HIV infected HAART naïve patients. The levels of
erythropoietin have not been studied in anaemic patients who are on HAART.
Objectives: To describe serum EPO levels of HIV infected anaemic patients who have been
on HAART for more than six months.
Design: Cross sectional descriptive study.
Setting: The study was carried out at a national hospital HIV treatment and follow-up
outpatient facility: Comprehensive Care Centre, Kenyatta National Hospital.
Methods: A total of 196 HIV elisa positive HAART experienced patients with anaemia
visiting the Comprehensive Care Centre were consecutively recruited. They were evaluated
by total blood counts, CD4 count, documented WHO clinical stage and serum erythropoietin
levels. Serum erythropoietin levels were measured by IMMULITE 2000 Elisa method.
Accrued data was entered in SPSS version 17 and analyzed therein.
Results: A total of 196 HIV positive adult patients with anaemia and who had been on
HAART for more than six months were evaluated. A total of 181 (92.3%) were found to
have a deficient erythropoietin response to anaemia in HIV, (EPO < 500IU/L). In this study
Hb was the main predictor of erythropoietin response.
Conclusion: Erythropoietin deficiency is nearly universal in anaemic patients on HAART
for more than six months.

G.O.Oyoo, H.A.Nour, M. D. JOSHI. "PATTERNS OF KNEE, HIP AND HAND OSTEOARTHRITIS IN KENYATTA NATIONAL HOSPITAL." EOAJ. 2013;7(7):1-56. Abstractpatterns_of_knee_hip_and_hand-1.pdf

Background: Osteoarthritis (OA) is one of the most common chronic rheumatic disorders and is associated
with significant morbidity and disability. Few studies examined the spectrum of rheumatic diseases in sub-
Saharan Africa. Obesity is not only a risk factor for incidence of OA but also for the progression of the
disease.
Objective: The aim of the study was to determine the patterns of knee, hip and hand osteoarthritis as well
as obesity prevalence in the patients with established disease.
Design: A cross-sectional descriptive study.
Methods: Patients with knee, hip and hand osteoarthritis were examined to describe the patterns of
osteoarthritis in 201 patients who fulfilled the ACR diagnostic criteria. Their body mass indices were also
studied to determine the prevalence of obesity in this cohort of patients.
Results: A total of 201 patients with knee, hip or hand osteoarthritis were studied. Of these participants,
77% had knee OA, 15% hip OA, 3% hand OA and 5% had combined knee and hip OA. Obese participants
were 41% and 32% were overweight. There were 89 (44.3%) participants with bilateral knee or hip disease
while 112(55.7%) had unilateral disease. Obesity was more common in participants with knee than in hip OA
(45.3% vs 10.3% respectively) P < 0.001. The bilateral disease was higher in obese (55.2%) and overweight
(44.6%) participants compared to participants with normal body mass indices (26.5%) P value < 0.007.
Conclusion: Knee OA was very common and the majority of the patients were overweight and obese.
Bilateral OA was more prevalent in obese and overweight participants compared to normal weight
participants. Obesity is an easily modifiable risk factor for knee OA so it can be made a valid target for
preventing as well as halting the progression of OA.
INTRODUCTION
Osteoarthritis (OA) is the most prevalent of chronic
rheumatic disorders in the world (1). The prevalence
is increasing as populations are aging and epidemic
obesity is in the rise. OA is estimated to be the fourth
leading cause of disability in most countries worldwide
(2). Worldwide, around 10% of the population who
are 60 years or older have symptomatic problems
attributable to OA (3). Knee, hip, hand and spine
are typically the affected joints. Knee OA is the most
common form and it is associated with profound
clinical and public health burden (4). Risk factors
include obesity, joint injury, previous joint surgery and
occupational bending and lifting. Of these, obesity is
the most powerful and modifiable risk factor for the
development of OA (5). It has been shown that 24%
of surgical cases due to knee OA can be prevented if
overweight and obese reduce their weights by 5Kg or
until they keep their BMIs in the recommended range
(6). On the other hand, maintaining an ideal weight not
only reduces the onset of the disease but also alleviates
the pain, reduces the disability and improves the quality
of life (7,8). The access to modalities of treatments of
the established disease, particularly the surgical aspect
of it, is beyond the reach of the most of the people living
in the developing countries like Kenya. We do not have
local data on the magnitude of the disease in our set up
as well as the prevalence of obesity in this population
with the disease. For these reasons and because obesity
is modifiable risk factor, we examined patients with
specific joint osteoarthritis and determined the obesity
prevalence in a simple descriptive cross-sectional
hospital based study.
MATERIALS AND METHODS
Subjects: Participants of this study were patients with
primary knee, hip and hand OA who were attending
the outpatient rheumatology and orthopaedic clinics in
Kenyatta National Hospital during the periods between
August and December 2012. A total of 2100 patients
with rheumatic diseases, (88%) from the orthopaedic
and rheumatology clinics (12%) were screened for
diagnostic label of knee, hip or hand OA confirmed
by ACR criteria. Of them, 210 (10%) patients were
eligible so 1890 (90%) patients were excluded. Nine
patients declined to give consent. In the final analysis,
201 patients were studied. Their consent was sought.
All procedures were in accordance with the institutional

G.O.Oyoo, F.A.Odhiambo. "Non-Compressive myelopathy: case report.". 2006.
G.O.Oyoo, F.A.Odhiambo. "Treatment of rheumatoid arthritis.". 2006.
G.O.Oyoo, E. K. Genga. "When is the last time you looked for diff use infi ltrative lymphocytosis syndrome in HIV patients?" Afr J Rheumatol. 2014;2(2)(1):2-6. Abstractdiff_use_infi_ltrative.pdf

Background: Di use In ltrative
Lymphocytosis Syndrome (DILS) is
characterised by a persistent CD8+
lymphocytosis and lymphocytic
in ltration of various organs. The exact
prevalence isn’t known but some studies
have reported between 0.85 – 3%, and
appears to be more common in African
population. Patients with DILS tend to have higher CD4 cell counts and survive
longer than those patients without DILS.
Most patients present with bilateral
parotid gland enlargement and features
of the Sicca syndrome. Common sites
of extra glandular involvement are the
lungs being the most common site,
followed by peripheral neuropathy and
liver. With the high incidence of HIV in
our population it is likely that DILS is
under diagnosed probably due to our
ignorance of this disease. Awareness of
its various presentations may bring to
light undiscovered patients with DILS.
Objective: To review pathogenesis,
diagnostic approach and current trends
in the management of di use interstitial
lymphocytic syndrome.
Data source:  Literature review of
relevant published literature from both
Africa and the rest of the world.
Data synthesis: Pathologically, under
light microscopy, DILS resembles the
focal sialadenitis seen with Sjogren’s
syndrome, although it tends to be less
destructive of the glandular architecture
than in Sjogren’s syndrome. Most of the
in ammatory in ltrate is composed
of CD8+ lymphocytes unlike Sjogren’s
which are CD4+. Lymphoepithelial
cysts are frequently observed in the
parotid glands of patients with DILS.
The variation in CD8+ count in the
course of HIV disease is less understood.
The variation in CD8+ lymphocytes is
implicated in the pathogenesis of a
number of clinical manifestations in HIV
diseases including Di use In ltrative
Lymphocytic Syndrome (DILS) and
HIV associated CD8+ lymphocytosis
syndrome. Parotid gland enlargement
in a patient with HIV infection should prompt clinicians to suspect DILS. In addition, clinicians should be aware
that the pulmonary process associated
with DILS may mimic clinically and
radiographically the pneumonic process
caused by pneumocystis carinii. Other
manifestations of DILS to consider
include a severe form of peripheral
neuropathy; lymphocytic in ltration of
the liver, evident as hepatitis; myositis;
and lymphocytic interstitial nephritis.
Management of DILS is determined
by the severity of glandular and extra
glandular features. Data on therapeutic
trials are lacking although there are
isolated reports of good response to
antiretroviral and steroid therapy.
Conclusion: DILS, a subset of HIV
disease manifestation, may present as
parotid gland swellings. In general, an
HIV patient presenting with DILS has a
better prognosis than a patient with HIV
alone. With the high incidence of HIV
in our population it is likely that DILS is
under diagnosed probably due to our
ignorance of this disease. Awareness of
its various presentations may bring to
light undiscovered patients with DILS.
Clinicians should watch for the possible
transformation into B-cell lymphoma.
There is still paucity of data about
this disease from pathophysiology to
treatment to studies correlating the
plasma viral load with CD8+ lymphocyte
count in patients with HIV disease.

G.O.MAUMBA, N.M.Monyonko, J.O.MALO. "THE FLATNESS PROBLEM AS ANATURAL COSMOLOGICAL PHENOMENON." INTERNATIONAL JOURNAL OF PURE AND APPLIED PHYSICS. 2008;4(2):161-169.
G.O A, M.W O. "Abong.". In: African Journal of food, Agriculture, Nutrition and Development 9(8), 1667-1682. (www.adfand.net).; 2009. Abstract

n/a

G.O O, N.M N. "Policies on Opioid Analgesics Hinder Management of Severe Pain Conditions in Kenya." The Pharmaceutical Journal of Kenya . 2008;18(3):113-115.
G.O O, E.K G, R.J M. "DMARD use in rheumatoid arthritis: can we predict treatment response?" Afr J Rheumatol . 2015;2(3):50-58. Abstractdmard_use_in_rheumatoid.pdf

Abstract
Objective: To review the current and emerging predictors of treatment response by DMARD Sin Rheumatoid Arthritis (RA) patients.Data source: Published original research work and reviews were searched in
English related to determinants of treatment response in rheumatoid arthritis on DMARDS Study design: Only articles that emphasis on determinants of rheumatoid arthritis treatment response with DMARDS Data extraction: Online and library searches done.Data synthesis: Data added and summarized Conclusions: Treatment of RA has been based on the use of a group of Disease-Modifying Antirheumatic Drugs
(DMARDs), of which methotrexate is the most widely used. Although
comprehensive clinical experience exists for MTX and synthetic DMARDs, to date it has not been possible to preview correctly whether or not a patient will respond to treatment with these drugs. Predicting response to MTX and other DMARDs would allow the selection of patients based on their likelihood of response,
thus enabling individualized therapy and avoiding unnecessary adverse effects and elevated costs. Distinguishing responders from non-responders at treatment start as studies have failed to consistently
reproduce similar determinants. Variables possibly influencing drug effectiveness may be related to disease, patient, treatment, clinical or biological (genetic and non-genetic) factors. This study
seeks to review the current data regarding biomarkers of treatment response to DMARDS.
Key words: Rheumatoid arthritis, DMARDS, Determinants of treatmentresponse

G.N.Kithure J, M.W. K. "Canning Food Processes may be a source of threat to the Consumer. International Journal of Scientific Research and Innovative Technology (IJSRIT)." International Journal of Scientific Research and Innovative Technology (IJSRIT).. 2021;8(3).abstract_2.pdf
G.N. M, C.K K, W.O. O, S.O. A, P.U. M. "PARTIAL REPLACEMENT OF NATURAL RIVER SAND WITH CRUSHED ROCK SAND IN CONCRETE PRODUCTION." Global Engineers & Technologists Review. 2013.abuodha.docx
G.N. M, S.I. S, M.N. W, A.A. A. "Role of abdominal ultrasound in evaluation of children with suspected upper gastrointestinal disease." East African Medical Journal . 2012;Vol. 89 (No. 6 ):June 2012.
G.N. OPINYA, Guthua SW. Essentials of Pediatric Orthodontics and Introduction to Orthognathic Surgery in Developing Countries. Nairobi: University of Nairobi Press; 2000.
G.N. M. The value of pediatric upper gastrointestinal studies. Nairobi: University of Nairobi; 1999.
G.N. KJ, G.W. N, K.K. E. "How Safe is the Water Consumed in Different Parts of Nairobi, Kenya? International Journal of Research and Innovation in Applied Science (IJRIAS) ." International Journal of Research and Innovation in Applied Science (IJRIAS). 2021;VI(VII):ISSN 2454-6194.abstract.pdf
G.N K. Strategies of Improving Soil Fertility and Productivity booklet. Edited by Mary Ngechu, The University of Nairobi; 1992.
G.Mutegi R, K.Muriithi M, Mwabu G. "The NTA Estimates for Kenya: Policy implications of the life cycle and tax profiles.". In: IUSSP. Marrakech, Morocco; 2009.
G.M.N, M.O, J.M.O. "Planned Organizational Change Consequent to Advanced Manufacturing Technology Adoption." International Journal of Recent Research in Interdisciplinary Sciences . 2015;Vol. 2(Issue 4):23-28.planned_organizational_change-496-2.pdf
G.M.N, M.O, J.M.O. "Influence of Human Factors on the relationship between Advanced Manufacturing Technology and Organizational structure." International Journal of Recent Research in Interdisciplinary Sciences. 2015;Vol. 2(Issue 4 ):1-22.influence_of_human_factors-486.pdf
G.M.N, P.K.O. Advanced Manufacturing Technology Adoption in Manufacturing Companies in Kenya. Istanbul, Turkey: International science index; 2015.
G.M.N, M.O, J.M.O. "Advanced Manufacturing Technology and Size as Determinants of Organizational Structure." Researchjournali’s Journal of Technology Management . 2015;Vol. 2(issue. 4 ):1-26.2223.pdf
G.M.N, P.K.O. "Advanved Manufacturing Technology and Technical Labour in Manufacturing Companies in Kenya.". In: Nairobi Innovational Week. Nairobi, Kenya; 2016.
G.M. N, J.M O. "Advanced Manufacturing Technology Adoption in Manufacturing Companies in Kenya." International Journal of Research in Engineering and Technology. 2015;Volume: 04 (Issue: 10 ):357-369.ijret20150410059.pdf
G.M N, M. O. "Human Factors as Determinants of AMT Adoptions in Structure of a Manufacturing Company." International Journal of Multidisciplinary Research and Development. 2015;Volume: 2(Issue: 10 ): 286-298.43-1.pdf
G.Karanja, C.Wandera, Mensah A, G M. "Croto-edoxide and other constituents if the stem bark twigs of Croton Macrostachyus." Filoterapia. 1992;LXIII (1).
G.K. Kirui, Misra AK, O.M. Olanya, Friedman M, El-Bedewy R, Ewell PT. "Glycolakaloid content of some superior potato (Solanum tuberosum L.) clones and commercial cultivars." Archives of Phytopathology and Plant Protection. 2009;42(5):453-463.
G.J.O. A. "Improving Artificial Insemination In Africa: Guideline and Recommendation.". In: Improving Artificial Insemination In Africa- Guideline and Recommendation. Vienna: International Atomic Energy Agency, Vienna; 2005.
G.H.N. N. supervision to Asiko, Grace Pollinating of Strawberries by stingless bees in Kenya . Nairobi, Kenya.: University of Nairobi.; 2012.
and G. Ouma., Omeny P.A KJ. "REMOTE SENSING APPLICATION ON EUTROPHICATION MONITORING IN KAVIRONDO GULF OF LAKE VICTORIA KENYA." Journal of African Meteorological Society. 2003;Vol.6 (No. 2):11-17.Eutrophication.pdf
G. K. Korir1, B. O. Ochieng, J. S. Wambani, I. K. Korir, Jowi YC. "RADIATION EXPOSURE IN INTERVENTIONAL PROCEDURES ." Radiat Prot Dosimetry (2012) doi: 10.1093/rpd/ncs072 . 2012. Abstract

Abstract

The aim of this study was to estimate radiation doses patients and staff are exposed to during interventional procedures (IPs), compare them with the international diagnostic reference levels and to develop initial National Diagnostic Reference Levels. The IP survey was undertaken as the initial task of which, retrospective data were collected from the only four Kenyan hospitals carrying out interventional radiology and cardiology procedures at the time of the study. Real-time measurement of radiation dose to patients and staff during these procedures was done. To the patients, kerma-area product (KAP) and fluoroscopy time measurements were done using an in-built KAP meter, while peak skin dose (PSD) was measured using slow Extended Dose Range (EDR2®) radiographic films. The staff occupational doses were measured using individual thermoluminescence dosemeters. The maximum and minimum KAP values were found to be 137.1 and 4.2 Gy cm2, while the measured PSD values were 740 and 52 mGy, respectively. The fluoroscopic time range was between 3.3 and 70 min. The staff doses per procedure ranged between 0.05 and 1.41 mSv for medical doctors, 0.03 and 1.16 mSv for nurses, 0.04 and 0.78 mSv for radiographers and 0.04 and 0.88 mSv for clinical staff. The measured patient PSDs were within the threshold limit for skin injuries. However, with the current few IP specialists, an annual increase in workload as determined in the study will result in the International Commission on Radiation Protection annual eye lens dose limit being exceeded by 10 %. A concerted effort is required to contain these dose levels through use of protective gear, optimisation of practice and justification.

G. PROFSIMIYUVINCENT. "The Emergency of a sub-Nation. A History of Babukusu in the TransAfrican.". In: Journal of History, Vol. 1:20. G.S. Were Pres, Nairobi, Kenya.; 1991. Abstract

n/a

G. PROFSIMIYUVINCENT. "Common Themes in the History of Africans and African Americans in Pan-African Studies.". In: Indiana State University Press. Kireti VM, Atinga JEO; 1994. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. W, N KC, MW O, H.G. R. "Status and process analysis of Koche, a traditional pastoral meat product in Kenya." Pastoralism: Research, Policy and Practice. 2019;9(6):1-7.
G. DRGATARIMICHAELJ. "Wagner A., Boman J., Gatari M. J., (2007). The elemental analysis of size-fractionated particulate matter using TXRF.". In: Corrected and re-Submitted to Spectrochimica Acta Part B. University of Nairobi.; 2008.
G. DRGATARIMICHAELJ. "Gatari M.J., Boman J. (2003). Black Carbon and total carbon measurements at urban and rural sites in Kenya, East Africa.". In: Atmospheric environ., 37: 1149-1154. University of Nairobi.; 2003. Abstract
There have been very few studies in Kenya on aerosols despite the global demand on aerosol ground studies in the perspective of climate and the human well being. Therefore, atmospheric aerosol studies became the basis of the work covered in this thesis which describes aerosol studies in Kenya and development of an energy dispersive X-ray fluorescence spectrometer (EDXRF). Atmospheric aerosols are composed of both the particulate and gas phases and they contain chemical compounds and elememts that are harmful to human health. Their particle size range is related to sources and this determines their impact in the ambient aatmosphere. Anthropogenic activities mainly contribute fine particles mass (PM 2.5) and natural proceses contribute both fine and course (PM (10-2.5)) particle masses. PM10 (PM 2.5 + PM (10-2.5)) are inhalable into the human respiratory system and the fine particles have a marked impact on climate. PM10 particles are efficient in transporting micronutrients between ecosystems, soiling and destroying buildings. Any policies meant to protect the environment by controlling atmospheric aerosol particles will need back up knowledge on particle sources and their physical and chemical characteristics. The five sampling campaigns covered under this study were conducted in Nairobi city, Meru and Nanyuki towns and on the slopes of Mount Kenya at about 2000m and 4000 m above the sea level. The multi-elemental analyzing capacity of EDXRF and statistical treatment of data are indispensable tools in aerosol source identification. These techniques were used in all the published results. The results revealed the dominance of local and regional biomass burning and local soil dust emissions. Traffic emissions were more pronounced in urban centers, with high concentrations of Br, Pb and Mn in Nairobi but with minor contribution at the remote sites on Mount Kenya. Marine influence was seen superimposed in the soil dust emissions and agricultural activities were also identied through elevated concentrations of Ca, Cl, K and S in the same source. Nairobi turned out to be a more polluted city in comparison to Dar es Salaam, Gaborone and Khartoum in Africa. The developed EDXRF spectrometer will play a major role in environmental studies in Kenya. Longterm measurements of Kenyan aerosols are recommended to better understand the total picture of aerosol particles including seasonal variation.
G. PROFSIMIYUVINCENT. "Family Life Among the Kikuyu People of Nyandarua District, in Nyandarua District Socio-Cultural Profile, Nairobi.". In: No. 89 1974, 44 pp. 3. Traditions et Modernite in Histoire de Iafrique est-elle Possible?, . Ed. Michel Amenguel, Nouvelles Editions Africaines, Abidjan. Kireti VM, Atinga JEO; 1963. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. DRGATARIMICHAELJ. "Boman J., Gatari M.J., wagner A., Hossain M.I., (2005). Elemental characterization of aerosols in urban and rural locations in Bangladesh.". In: X-ray Spetrometry; DOI: 10, 1002/xrs.864, 460-467. University of Nairobi.; 2005. Abstract
There have been very few studies in Kenya on aerosols despite the global demand on aerosol ground studies in the perspective of climate and the human well being. Therefore, atmospheric aerosol studies became the basis of the work covered in this thesis which describes aerosol studies in Kenya and development of an energy dispersive X-ray fluorescence spectrometer (EDXRF). Atmospheric aerosols are composed of both the particulate and gas phases and they contain chemical compounds and elememts that are harmful to human health. Their particle size range is related to sources and this determines their impact in the ambient aatmosphere. Anthropogenic activities mainly contribute fine particles mass (PM 2.5) and natural proceses contribute both fine and course (PM (10-2.5)) particle masses. PM10 (PM 2.5 + PM (10-2.5)) are inhalable into the human respiratory system and the fine particles have a marked impact on climate. PM10 particles are efficient in transporting micronutrients between ecosystems, soiling and destroying buildings. Any policies meant to protect the environment by controlling atmospheric aerosol particles will need back up knowledge on particle sources and their physical and chemical characteristics. The five sampling campaigns covered under this study were conducted in Nairobi city, Meru and Nanyuki towns and on the slopes of Mount Kenya at about 2000m and 4000 m above the sea level. The multi-elemental analyzing capacity of EDXRF and statistical treatment of data are indispensable tools in aerosol source identification. These techniques were used in all the published results. The results revealed the dominance of local and regional biomass burning and local soil dust emissions. Traffic emissions were more pronounced in urban centers, with high concentrations of Br, Pb and Mn in Nairobi but with minor contribution at the remote sites on Mount Kenya. Marine influence was seen superimposed in the soil dust emissions and agricultural activities were also identied through elevated concentrations of Ca, Cl, K and S in the same source. Nairobi turned out to be a more polluted city in comparison to Dar es Salaam, Gaborone and Khartoum in Africa. The developed EDXRF spectrometer will play a major role in environmental studies in Kenya. Longterm measurements of Kenyan aerosols are recommended to better understand the total picture of aerosol particles including seasonal variation.
G. PROFSIMIYUVINCENT. "Bildad Kagia: A Biography.". In: East African Educational Publishers.; 1996. Abstract

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G. PROFSIMIYUVINCENT. "Les Classes Sociales en Afrique de Iquest Pre-Coloniale in He-CHI Revue dEtudes Francaises de Iuniversite de Nairobi.". In: P. 47-53 Editorship: African in Time Perspective. Weekly Radio Talks on African History, V.O.K. Kireti VM, Atinga JEO; 1985. Abstract

The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.

G. DRGATARIMICHAELJ. "Michael James Gatari, (2006). PhD Thesis:- Studies of atmospheric aerosols and development of an EDXRF spectrometer in Kenya, Gotenburg University, Gotenburg, Sweden, ISBN 91-628-6755-5.". In: Publicly Defended , PhD Thesis: ISBN 91-628-6755-5. University of Nairobi.; 2006. Abstract
There have been very few studies in Kenya on aerosols despite the global demand on aerosol ground studies in the perspective of climate and the human well being. Therefore, atmospheric aerosol studies became the basis of the work covered in this thesis which describes aerosol studies in Kenya and development of an energy dispersive X-ray fluorescence spectrometer (EDXRF). Atmospheric aerosols are composed of both the particulate and gas phases and they contain chemical compounds and elememts that are harmful to human health. Their particle size range is related to sources and this determines their impact in the ambient aatmosphere. Anthropogenic activities mainly contribute fine particles mass (PM 2.5) and natural proceses contribute both fine and course (PM (10-2.5)) particle masses. PM10 (PM 2.5 + PM (10-2.5)) are inhalable into the human respiratory system and the fine particles have a marked impact on climate. PM10 particles are efficient in transporting micronutrients between ecosystems, soiling and destroying buildings. Any policies meant to protect the environment by controlling atmospheric aerosol particles will need back up knowledge on particle sources and their physical and chemical characteristics. The five sampling campaigns covered under this study were conducted in Nairobi city, Meru and Nanyuki towns and on the slopes of Mount Kenya at about 2000m and 4000 m above the sea level. The multi-elemental analyzing capacity of EDXRF and statistical treatment of data are indispensable tools in aerosol source identification. These techniques were used in all the published results. The results revealed the dominance of local and regional biomass burning and local soil dust emissions. Traffic emissions were more pronounced in urban centers, with high concentrations of Br, Pb and Mn in Nairobi but with minor contribution at the remote sites on Mount Kenya. Marine influence was seen superimposed in the soil dust emissions and agricultural activities were also identied through elevated concentrations of Ca, Cl, K and S in the same source. Nairobi turned out to be a more polluted city in comparison to Dar es Salaam, Gaborone and Khartoum in Africa. The developed EDXRF spectrometer will play a major role in environmental studies in Kenya. Longterm measurements of Kenyan aerosols are recommended to better understand the total picture of aerosol particles including seasonal variation.
G. PROFSIMIYUVINCENT. "Arican Traditional Methods anf Education in East Africa in Presence Africaine, No. 87.". In: No. 89 1974, 44 pp. 3. Traditions et Modernite in Histoire de Iafrique est-elle Possible?, . Ed. Michel Amenguel, Nouvelles Editions Africaines, Abidjan.; 1973. Abstract

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G. PROFKIOYPAUL. "Pain.Afr J Health Sci. 1995 Aug;2(3):324-326. No abstract available. PMID: 12160456 [PubMed - as supplied by publisher].". In: East Afr Med J. 1996 Aug;73(8):538-40.PMID: 8898471 [PubMed - indexed for MEDLINE]. International Journal of BiochemiPhysics; 1995. Abstract
Nyeri Provincial General Hospital, Kenya. Between June and December 1992 forty AIDS patients as defined by the CDC criteria, admitted to the medical wards of the Kenyatta National Hospital, were studied to determine the prevalence and pattern of peripheral neuropathy. Their mean age was 33 +/- 3 years with a range of 16 to 55 years. Clinical and laboratory assessment were carried out both to confirm peripheral neuropathy and exclude other causes of peripheral neuropathy apart from AIDS. All the patients had nerve conduction and electromyographic studies done. Eighteen patients were asymptomatic while fourteen had both signs and symptoms. The commonest symptom was painful paresthesiae of the limbs (35%) while the commonest sign was loss of vibration sense (60%). When symptoms, signs, and electrophysiological studies were combined, all the patients fitted the definition of peripheral neuropathy. The commonest type of peripheral neuropathy was distal symmetrical peripheral neuropathy (DSPN) (37.5%). PIP: In Kenya, physicians evaluated 40 AIDS patients admitted to Kenyatta National Hospital during June-December 1992 to determine the prevalence and types of peripheral neuropathy in AIDS patients. 75% were 21-40 years old. 18 (45%) of the 40 AIDS patients had symptoms of peripheral neuropathy. Symptoms included increased sensitivity to stimulation (43%), hyperpathia (15%), and muscle or limb weakness (13%). 26 AIDS patients had signs of peripheral neuropathy, especially impaired sense of vibration (60%). 14 of these patients had both signs and symptoms. Electromyographic and nerve conduction velocity revealed peripheral neuropathy in 16 (40%) AIDS patients. The types of peripheral neuropathy included distal symmetrical peripheral neuropathy (37.5%), polyneuropathy, and mononeuritis multiplex. When the symptoms, signs, and electroneurophysiological test findings were considered, all 40 AIDS patients had evidence of peripheral neuropathy. PMID: 8898471 [PubMed - indexed for MEDLINE]
G. PROFSIMIYUVINCENT. "Human Settlement in South Nyanza.". In: Procedings of a Conference sponsored by the Swedish agency for Research co-operation with Development Countries (SAREC) and organised by the Centre for Archaelogy and Antiquties, University of Tananarive Madagascar, SAREC, Sweden. Kireti VM, Atinga JEO; 1991. Abstract

The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.

G. DRGATARIMICHAELJ. "Gatari M. J., Pettersson J. B. C., Kimani W., Boman J., (2008). Inorganic and black carbon aerosol concentrations at a high altitude on Mt Kenya.". In: X-Ray Spectrometry; DOI 10.1002/xrs.1094. University of Nairobi.; 2008.
G. WG, D. O, Dindi E, Owor M. "Genesis of the East African Rift System.". In: Genesis of the East African Rift System. Springer; 2016. Abstract

The East African Rift System (EARS) started in Late Oligocene to Early Miocene time and gradually propagated southwards from the Afar Depression, beginning in the Middle Miocene. The hot, low-density mantle material of the Afar Plume heated the overlying lithosphere, causing thinning, regional doming, and the earliest basaltic volcanism in southern Ethiopia. In Ethiopia, the Afar Depression, the Main Ethiopian Rift, and the broadly rifted zone of southwestern Ethiopia represent the northern segment of the EARS. In the Kenyan sector of the EARS, uplift and doming also gave rise to the Kenya Dome. The radial flow patterns of the initial phonolites provide evidence for doming. Another important observation is that the rift geometry was greatly influenced by pre-existing structures of the underlying Mozambique Mobile Belt. Rifting proceeded through alternating episodes of volcanism and tectonics. Crossing into Tanzania, the influence of the neighbouring Tanzania Craton becomes evident. Here, the rift is expressed only in the northern part, splaying out in diverging half-graben valleys that are outside the Kenya Dome. Large boundary faults and opposing flexural margins, producing mobile asymmetrical full and half-graben basins that are individually linked along the rift axis, mark the Western Rift Valley. These basins are frequently occupied by elongate and narrow lakes (largely freshwater) separated by accommodation zones and containing significant hydrocarbon resources especially in the Albertine Graben. Small to large lakes existed in the EARS during the Plio–Pleistocene. Lakes in the Western Rift are large and deep, whereas those in the Kenya, Main Ethiopian, and Afar Rifts are generally small and shallow. Geological records indicate that the lakes sensitively responded to orbital forcing as well as to local, regional, and global climatic, environmental, and tectonic changes, resulting in fluctuating lake sizes and even desiccation.

G. PROFSIMIYUVINCENT. "Changes in China since 1976 in Viva.". In: Special Edition on President Daniel Moi's State to the Peoples Republic of China.; 1980. Abstract

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G. PROFKIOYPAUL. "Patel, N.B ., Kalaria, R.N., Kioy, P.G., Kariuki, M, Unverzagt, F., Hendrie, H., Gatere, S., Freidland, R.P. (2000) High APOE e 4 allele frequency in elderly Kikuyus in Kenya . World Alzheimer's Congress 2000.". In: East Afr Med J. 2001 Feb;78(2):93-6.PMID: 11682954 [PubMed - indexed for MEDLINE]. International Journal of BiochemiPhysics; 2000. Abstract
Department of Medical Physiology, University of Nairobi, P.O. Box 30197, Nairobi. OBJECTIVE: To report on the occurrence of clinical multiple sclerosis among indigenous Bantu African Kenyans who have never been out of the country. DESIGN: A retrospective study. SETTING: A private neurology and clinical electrophysiology clinic. SUBJECTS: All the patients referred to the clinic by neurologists and other specialists for electrophysiological tests with diverse neurological complaints. The patients examined and diagnosed as having multiple sclerosis on clinical grounds and established criteria are reported. RESULTS: Out of 2831 patients referred for electrophysiological tests over a ten year period, nine patients were diagnosed as having definite multiple sclerosis on clinical grounds. Four of these had supporting laboratory findings (MRI scans, CSF studies and visual evoked responses). The presenting symptoms were predominantly visual disturbances and somatic sensorimotor disturbances which were seen in all the patients. Cerebellar dysfunction was observed less frequently, in less than half of the patients while sphincter disturbances were conspicuously rare. The sex distribution was overwhelmingly in favour of the female at a ratio of 7:2. A part from two patients of Indo-asian ethnicity, all the others were indigenous Bantu Africans who had never travelled outside their country before the onset of the illness. CONCLUSIONS: Multiple sclerosis occurs amongst Bantu Africans and may not be as rare as previously suggested and its prevalence is certainly on the increase. The development of higher incidence rates in communities where the illness was previously unknown may present opportune settings for the study of aetiological factors of this illness as it emerges. There is a need therefore for proper epidemiological studies to evaluate these factors, especially environmental factors, as the new disease continues to appear. PMID: 11682954 [PubMed - indexed for MEDLINE]
G. W, Koriyow Hussein A. "Impact of Subsidised Fees on Students’ Access to Quality Education in Public Secondary Schools in Wajir County, Kenya. ." International Journal of Education and Research . 2017;5(7):247-262 .abstract.pdf
G. PROFSIMIYUVINCENT. "Family Life Among the Kikuyu People of Muranga District, Nairobi.". In: Publication sponsored by the Ministry of Finance and Economics Planning and the University of Nairobi. Kireti VM, Atinga JEO; 1991. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. DRGATARIMICHAELJ. "Kinyua, A.M., Maina D.M., Maina C., Mangala M.J., Jumba I.O., Gatebe C. K., Gatari M.J., Non-destructive analysis of Mercury (Hg) by Energy Dispersive X-ray Fluorescence (EDXRF) Technique in Beauty Creams sold in Kenya.". In: Presented at International Symposium on harmonization of health related environmental measurements using nuclear and isotopic techniques, Hyderabad, India, 4-7 November 1996. University of Nairobi.; 1996.
G. PROFSIMIYUVINCENT. "The Use of the Oral Traditions in the reconstruction of Africans past: Case Studies from Kenya.". In: Proccedings of the International Conference of Anthropologists, Maputo, Mozambique, SAREC, Sweden.; 1990. Abstract

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G. PROFSIMIYUVINCENT. "History of the Peoples of Bungoma District, In Bungoma District socio-cultural Profile Nairobi.". In: Indiana State University Press. Kireti VM, Atinga JEO; 1993. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. DRGATARIMICHAELJ. "Gatari M.J., Maina D.M., Bartilol S., Gaita S.M., Determination of trace metals in bottled Commercial Drinking water using TXRF in Nairobi, Kenya.". In: Poster presentation, European conference on X-Ray Spectrometry (XRS2008), Cavtat, Dubrovnik, Croatia, 16-20 June 2008. University of Nairobi.; 2008.
G. DRGATARIMICHAELJ. "Gatari M.J., (2002). Studies of Atmospheric Aerosols at selected sites in Kenya.". In: Publicly Defended, Licentiate Thesis, Department of Physics and Engineering Physics, G. University of Nairobi.; 2002.
G. PROFSIMIYUVINCENT. "The Demographic trends in Muranga District Socio-Cultural profile.". In: Publication sponsored by the Ministry of Finance and Economics Planning and the University of Nairobi.; 1991. Abstract

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G. KJ, I. MJ, N. WR, L TC. "Determination of Deltamethrin Residue Levels in Selected Vegetables Consumed in Nairobi, Kenya using HPLC." Journal of International; Published by Environmental Application & Science . 2010;5(1)(11-ICCA Special Issue):801-805. Abstract

Abstract Vegetables provide vital minerals and other nutrients to our bodies.
However, pests destroy vegetables. This as lead to rampant use of pesticides on
vegetables in Kenya. The pesticides that are commonly used on vegetables in
Kenya are the pyrethroids which include; deltamethrin, lambda-cyhalothrin and
chismethrin. In this study deltamethrin was analysed in selected vegetables which
include; kales, cabbages and tomatoes during the dry and wet seasons. The
vegetables were bought from some markets in Nairobi city in Kenya.
Deltamethrin residues were extracted from the samples using organic solvents.
The residues were then determined by high performance liquid chromatography
1
(HPLC). The results shows that the deltamethrin mean residue levels ranged
between 0.0700±0.0200 and 0.2000±0.1000 mg/kg during the dry season and
between 0.0080±0.0500 and 0.0400±0.0001 mg/kg during the wet season. The
deltamethrin residue levels were significantly higher during the wet season than
during the wet season in most of the samples.
Keywords: Vegetables, pyrethroids, deltamethrin, residues and HPLC

G. PROFSIMIYUVINCENT. "History of West-African from 1800 to the Present.". In: University of Nairobi Press. Kireti VM, Atinga JEO; 1999. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. W. "Programme Design at University : A Prelude to Pedagogy.". In: Interactive Teaching Materials for University Lecturers and Professors in Pedagogy . Nairobi: CODL: University of Nairobi; 2014.
G. PROFSIMIYUVINCENT. "Elijah Masinde: A Biography Series : Makers of Kenya's History.". In: Series Editor Prof. Simiyu Wandibba East African Educational Publications, Nairobi, Kenya. Kireti VM, Atinga JEO; 1963. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. DRGATARIMICHAELJ. "Gatari M.J., Air pollution over East Africa.". In: Oral presentation, First International Workshop on Climate Variability over Africa. Alexandria, Egypt, 15-26 May 2005. University of Nairobi.; 2005. Abstract
There have been very few studies in Kenya on aerosols despite the global demand on aerosol ground studies in the perspective of climate and the human well being. Therefore, atmospheric aerosol studies became the basis of the work covered in this thesis which describes aerosol studies in Kenya and development of an energy dispersive X-ray fluorescence spectrometer (EDXRF). Atmospheric aerosols are composed of both the particulate and gas phases and they contain chemical compounds and elememts that are harmful to human health. Their particle size range is related to sources and this determines their impact in the ambient aatmosphere. Anthropogenic activities mainly contribute fine particles mass (PM 2.5) and natural proceses contribute both fine and course (PM (10-2.5)) particle masses. PM10 (PM 2.5 + PM (10-2.5)) are inhalable into the human respiratory system and the fine particles have a marked impact on climate. PM10 particles are efficient in transporting micronutrients between ecosystems, soiling and destroying buildings. Any policies meant to protect the environment by controlling atmospheric aerosol particles will need back up knowledge on particle sources and their physical and chemical characteristics. The five sampling campaigns covered under this study were conducted in Nairobi city, Meru and Nanyuki towns and on the slopes of Mount Kenya at about 2000m and 4000 m above the sea level. The multi-elemental analyzing capacity of EDXRF and statistical treatment of data are indispensable tools in aerosol source identification. These techniques were used in all the published results. The results revealed the dominance of local and regional biomass burning and local soil dust emissions. Traffic emissions were more pronounced in urban centers, with high concentrations of Br, Pb and Mn in Nairobi but with minor contribution at the remote sites on Mount Kenya. Marine influence was seen superimposed in the soil dust emissions and agricultural activities were also identied through elevated concentrations of Ca, Cl, K and S in the same source. Nairobi turned out to be a more polluted city in comparison to Dar es Salaam, Gaborone and Khartoum in Africa. The developed EDXRF spectrometer will play a major role in environmental studies in Kenya. Longterm measurements of Kenyan aerosols are recommended to better understand the total picture of aerosol particles including seasonal variation.
G. PROFSIMIYUVINCENT. "Common Themes in the History of Africans and African Americans in Pan-African Studies.". In: Indiana State University Press.; 1994. Abstract

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G. PROFSIMIYUVINCENT. "Land and Politics in Ukambani, 1895-1933, in Presence Africaine.". In: No. 89 1974, 44 pp. 3. Traditions et Modernite in Histoire de Iafrique est-elle Possible?, . Ed. Michel Amenguel, Nouvelles Editions Africaines, Abidjan. Kireti VM, Atinga JEO; 1975. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. DRGATARIMICHAELJ. "Gatari M.J., Boman J., Wagner A., Janhall S., Isakson J., (2006). Assessment of inorganic content of PM2.5 particles sampled in a rural area north-east of Hanoi, Vietnam. Sc. of Total Environ. 368: 675-685.". In: Sc. of Total Environ. 368: 675-685. University of Nairobi.; 2006. Abstract
There have been very few studies in Kenya on aerosols despite the global demand on aerosol ground studies in the perspective of climate and the human well being. Therefore, atmospheric aerosol studies became the basis of the work covered in this thesis which describes aerosol studies in Kenya and development of an energy dispersive X-ray fluorescence spectrometer (EDXRF). Atmospheric aerosols are composed of both the particulate and gas phases and they contain chemical compounds and elememts that are harmful to human health. Their particle size range is related to sources and this determines their impact in the ambient aatmosphere. Anthropogenic activities mainly contribute fine particles mass (PM 2.5) and natural proceses contribute both fine and course (PM (10-2.5)) particle masses. PM10 (PM 2.5 + PM (10-2.5)) are inhalable into the human respiratory system and the fine particles have a marked impact on climate. PM10 particles are efficient in transporting micronutrients between ecosystems, soiling and destroying buildings. Any policies meant to protect the environment by controlling atmospheric aerosol particles will need back up knowledge on particle sources and their physical and chemical characteristics. The five sampling campaigns covered under this study were conducted in Nairobi city, Meru and Nanyuki towns and on the slopes of Mount Kenya at about 2000m and 4000 m above the sea level. The multi-elemental analyzing capacity of EDXRF and statistical treatment of data are indispensable tools in aerosol source identification. These techniques were used in all the published results. The results revealed the dominance of local and regional biomass burning and local soil dust emissions. Traffic emissions were more pronounced in urban centers, with high concentrations of Br, Pb and Mn in Nairobi but with minor contribution at the remote sites on Mount Kenya. Marine influence was seen superimposed in the soil dust emissions and agricultural activities were also identied through elevated concentrations of Ca, Cl, K and S in the same source. Nairobi turned out to be a more polluted city in comparison to Dar es Salaam, Gaborone and Khartoum in Africa. The developed EDXRF spectrometer will play a major role in environmental studies in Kenya. Longterm measurements of Kenyan aerosols are recommended to better understand the total picture of aerosol particles including seasonal variation.
G. PROFSIMIYUVINCENT. "Family Life Among the Kikuyu People of Nyandarua District, in Nyandarua District Socio-Cultural Profile, Nairobi.". In: No. 89 1974, 44 pp. 3. Traditions et Modernite in Histoire de Iafrique est-elle Possible?, . Ed. Michel Amenguel, Nouvelles Editions Africaines, Abidjan.; 1963. Abstract

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G. PROFKIOYPAUL. "Autonomic nervous function in patients with chronic renal failure at the Kenyatta National Hospital.East Afr Med J. 1994 Apr;71(4):253-5.PMID: 8062774 [PubMed - indexed for MEDLINE].". In: 1994 Apr;71(4):253-5.PMID: 8062774 [PubMed - indexed for MEDLINE]. International Journal of BiochemiPhysics; 1994. Abstract
Department of Medicine, College of Health Sciences, University of Nairobi. Autonomic nervous function was assessed in twenty two patients (16 males and 6 females) with chronic renal failure on conservative management. The presenting symptoms were postural dizziness in 10(45%), impotence in 4(18%) patients and 1 patient each with diplopia, urinary urgency and nocturnal diarrhoea. The following autonomic function tests were performed; valsalva manoeuvre, heart rate response to deep breathing, heart rate response to posture and postural change in blood pressure. Fifteen (68%) patients had abnormal autonomic function tests. Out of these patients, 14(93%) had abnormalities of the parasympathetic system and only one had abnormalities in the sympathetic system. There was a negative correlation between the creatinine levels and the following; valsalva ratio (r = -0.72 p < 0.001), heart rate response to standing (r = -0.56 p < 0.01) and heart rate response to deep breathing (r = -0.45 p < 0.05). PMID: 8062774 [PubMed - indexed for MEDLINE]
G. PROFSIMIYUVINCENT. "The Democractic Myth in African Traditional Societies in Theory and Practice of Democracy in Africa ed.". In: By W. Oyugi et all, Heinemann, Nairobi. Kireti VM, Atinga JEO; 1988. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. DRGATARIMICHAELJ. "Gatari M.J., Hays D.M., Lavrich R.J., Gaita S.M., Determination of particulate carbonaceous species in an urban background aerosol in Nairobi, Kenya.". In: Poster presentation, The 5th Asian Aerosol Conference (AAC2007). Kaohsiung, Taiwan (ROC), 26-29 August 2007: Poster presentation, European Aerosol Conference (EAC2007), Salzburg, Austria, 9-14 September 2007. University of Nairobi.; 2007.
G. DRGATARIMICHAELJ, ODHIAMBO MRMATINIA. "Training of Equipment Maintenance Personnel Matini A.O., Gatari M.J.". In: Presented, NUSESA Maintenance of Equipment for the Advancement of Science Regional Conference, Sheraton Hotel, Kampala, Uganda, 3-4 December 2001. J. Kenya Meteorological Soc; 2001.
G. PROFSIMIYUVINCENT. "Les Classes Sociales en Afrique de Iquest Pre-Coloniale in He-CHI Revue dEtudes Francaises de Iuniversite de Nairobi.". In: P. 47-53 Editorship: African in Time Perspective. Weekly Radio Talks on African History, V.O.K.; Submitted. Abstract

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G. PROFKIOYPAUL. "Kalaria, R. N., Patel, N.B ., Kariuki, M., Kioy, P.G., Gatere, S., Hall, K.S., Unverzagt, F.W., Hendrie, H.C., Friedland, R.P. (1999) Epidemological studies and genetic factors in Alzheimer's disease in rural Kenya. 4th International Congress, Society of .". In: East Afr Med J. 2001 Feb;78(2):93-6.PMID: 11682954 [PubMed - indexed for MEDLINE]. International Journal of BiochemiPhysics; 1999. Abstract
Department of Medical Physiology, University of Nairobi, P.O. Box 30197, Nairobi. OBJECTIVE: To report on the occurrence of clinical multiple sclerosis among indigenous Bantu African Kenyans who have never been out of the country. DESIGN: A retrospective study. SETTING: A private neurology and clinical electrophysiology clinic. SUBJECTS: All the patients referred to the clinic by neurologists and other specialists for electrophysiological tests with diverse neurological complaints. The patients examined and diagnosed as having multiple sclerosis on clinical grounds and established criteria are reported. RESULTS: Out of 2831 patients referred for electrophysiological tests over a ten year period, nine patients were diagnosed as having definite multiple sclerosis on clinical grounds. Four of these had supporting laboratory findings (MRI scans, CSF studies and visual evoked responses). The presenting symptoms were predominantly visual disturbances and somatic sensorimotor disturbances which were seen in all the patients. Cerebellar dysfunction was observed less frequently, in less than half of the patients while sphincter disturbances were conspicuously rare. The sex distribution was overwhelmingly in favour of the female at a ratio of 7:2. A part from two patients of Indo-asian ethnicity, all the others were indigenous Bantu Africans who had never travelled outside their country before the onset of the illness. CONCLUSIONS: Multiple sclerosis occurs amongst Bantu Africans and may not be as rare as previously suggested and its prevalence is certainly on the increase. The development of higher incidence rates in communities where the illness was previously unknown may present opportune settings for the study of aetiological factors of this illness as it emerges. There is a need therefore for proper epidemiological studies to evaluate these factors, especially environmental factors, as the new disease continues to appear. PMID: 11682954 [PubMed - indexed for MEDLINE]
G. PROFSIMIYUVINCENT. "The Emergency of a sub-Nation. A History of Babukusu in the TransAfrican.". In: Journal of History, Vol. 1:20. G.S. Were Pres, Nairobi, Kenya. Kireti VM, Atinga JEO; 1991. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. DRGATARIMICHAELJ. "Boman J., Gatari M. J., Janh.". In: Atmos. Chem. Phys. Discuss; 8, 7703-7724. University of Nairobi.; 2008.
G. DRGATARIMICHAELJ. "Gatari M.J., Kinyua A.M., Projects implementation in Africa.". In: Oral presentation, AFRA IV (RAF/4/009) Regional Meeting on Current and Future Activities in Maintenance and Repair of Nuclear Instruments. Arusha, Tanzania: 28th February to 2nd March 1994. University of Nairobi.; 1994.
mary g., john m., lewis n., isaac m., ambrose v. "The challenges facing adult and continuing education in Kenya. ." International Journal of Education and Social Sciences. 2016;10(3):53-57.
G. PROFSIMIYUVINCENT. "Human Settlement in South Nyanza.". In: Procedings of a Conference sponsored by the Swedish agency for Research co-operation with Development Countries (SAREC) and organised by the Centre for Archaelogy and Antiquties, University of Tananarive Madagascar, SAREC, Sweden.; Submitted. Abstract

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G. PROFKIOYPAUL. "Oyungu, Eren, Kioy, P.G ., Patel, Nilesh B . (2003). Khat (Catha edulis) reduces entylenetetrazol (PTZ) induced seizures. Biochemical Society of Kenya Conference. Nairobi , Kenya . 11-15 August 2003.". In: Biochemical Society of Kenya Conference. International Journal of BiochemiPhysics; 2003. Abstract
Department of Medical Physiology, Moi University, P.O. Box 4606, Eldoret, Kenya. BACKGROUND: Khat is a plant whose young shoots and leaves are habitually used in Eastern Africa and the Arabian Peninsula as a drug of recreation. Although it is used without any control in these regions, it contains two controlled substances, cathinone (schedule I) which is present in fresh khat and cathine (schedule VI) which is a degradation product of cathinone abundant in old khat. OBJECTIVE: To determine the effect of khat on locomotor behaviour and seizures in rats. DESIGN: Experimental study. SETTING: University of Nairobi. SUBJECTS: Adult male rats in groups of six were given fresh khat, old khat, methylphenidate and saline at varying doses and observed over three hours. RESULTS: Fresh khat at low doses and old khat at high doses stimulated locomotor activity. High doses of fresh and old khat induced stereotype behaviour and seizures. CONCLUSION: The results show that khat stimulates locomotor and stereotypic behavioural activity and can induce seizures; results similar to those observed with amphetamine analogs. PMID: 17892196 [PubMed - indexed for MEDLINE]
G. PROFSIMIYUVINCENT. "Human Settlement along the Kenyans Coast. Proceedings of the SAREC conference in Harare, Zimbabwe, SAREC, Sweden.". In: Indiana State University Press. Kireti VM, Atinga JEO; 1992. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. DRGATARIMICHAELJ. "Naziriwo B.B., Wandiga S.O., Gatari M.J.G., Madadi O.V., Ssebuwufu P.J., Determination of trace metal concentrations in waters of Nakivubo Channel and Lake Victoria using Energy Dispersive X-Ray Fluorescence Analysis.". In: Poster presentation, European conference on X-Ray Spectrometry (XRS2007), Cavtat, Dubrovnik, Croatia, 16-20 June 2008. University of Nairobi.; 2008. Abstract
In an effort to understand the pollution levels in waters of Nakivubo channel in Kampala, Uganda and Lake Victoria (Fig 1) concentrations of Mn, Fe, Co, Cu, Zn and Pb were determined using convectional EDXRF and TXRF analysis. Water samples were collected with a 1-litre Van Don sampler (code, 1077) and transferred into polyethylene containers that were stored in an ice cooled box. Five samples were obtained at each sampling site and were all stored at -21 0C until analysis. Filtration on cellulose filter gave a particulate deposit that was analyzed for trace metals on a convectional EDXRF spectrometer. Pre-concentration and evaporation at 50 0C were used for extraction of dissolved metal content that was analyzed on TXRF. Samples of the unfiltered water were treated with HNO3 and H202 in a process for extracting total trace metal content that was subsequently prepared and analyzed on TXRF. Spectra from the spectrometers were analyzed for the trace elements of interest and elemental quantification was achieved using Quantitative X-ray Analysis software from International Atomic Energy Agency. The results showed high concentrations of particulate Fe and Mn, and relatively low Zn upstream the Nakivubo Channel. These were lower in the Lake Victoria waters. At the shores of Lake Victoria the dissolved Fe and Zn were higher than in the channel. The concentrations of Fe, Mn and Zn in Lake Victoria were below the USEPA maximum contamination limits of 0.3, 0.05 and 5 mg/L respectively. However, Fe at the mouth of Nakivubo Channel was high and in general the quantified total elemental concentrations increased upstream along the channel. This meant increased water pollution input upstream and along the channel.
G. DRGATARIMICHAELJ, ODHIAMBO MRMATINIA. "Training of Equipment Maintenance Personnel Matini A.O., Gatari M.J.". In: Presented, NUSESA Maintenance of Equipment for the Advancement of Science Regional Conference, Sheraton Hotel, Kampala, Uganda, 3-4 December 2001. University of Nairobi.; 2001.
G. PROFSIMIYUVINCENT. "Family Life Among the Kikuyu People of Muranga District, Nairobi.". In: Publication sponsored by the Ministry of Finance and Economics Planning and the University of Nairobi.; 1991. Abstract

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G. PROFSIMIYUVINCENT. "Bildad Kagia: A Biography.". In: East African Educational Publishers. Kireti VM, Atinga JEO; 1996. Abstract
The human body louse, Pediculus humanus, showed eighteen midgut proteins ranging between 12 and 117 kDa, when analysed by SDS-PAGE electrophoresis. Seven of them (12 kDa, 17 kDa, 29 kDa, 35 kDa, 40 kDa, 55 kDa and 97 kDa) were major bands based on their intensity of staining. The immunization of rabbits with a midgut extract elicited the production of protective polyclonal antibodies. These antibodies reacted strongly with all major midgut proteins as well as with 63 kDa and 117 kDa proteins when tested by the Western blot technique. The analysis of the proteins revealed that the 12 kDa, 25 kDa, 29 kDa, 35 kDa, 45 kDa, 87 kDa and 97 kDa proteins are glycosylated and none of them contained a lipid moiety. By electroelution, the proteins of 35 kDa and 63 kDa were purified. On trypsinization, the proteins of 35 kDa and 63 kDa produced four major fragments (F1, F2, F3, and F4) when resolved on a 18% SDS-PAGE. The F1 fragment of the 35 kDa protein reacted with the polyclonal antibodies by the immunoblot technique.
G. W. "The Role of the University Lecturer.". In: Interactive Teaching Materials for University Lecturers and Professors in Pedagogy . Nairobi: CODL: University of Nairobi; 2014.
G. DRGATARIMICHAELJ. "Gatari M.J.G., Boman J., Design and Development of an Energy-Dispersive X-ray Spectrometer: A tool for Environmental Research in Kenya.". In: Oral Presentation, 1st National Conference and Exhibition for Dissemination of Research Results and Review of Innovations and Exhibition, Ministry of Higher Education, Science and Technology. Nairobi, Kenya, 28-30 April 2008: Poster presentation, European. University of Nairobi.; 2008. Abstract
Contribution of scientific research to local and international journals from Africa and indeed Kenya is weak in comparison to other regions. One of the main problems is the non-availability of reliable and affordable analytical instrumentation. Energy-Dispersive X-ray Fluorescence (EDXRF) analysis is a special analytical technique for trace elements in that it is economical and easy to use. Its analytical capacity has the advantage of having multi-elemental characteristics and satisfactory speed. Convectional EDXRF analysis is used in identifying toxic trace elements in the general environment, trace elements in airborne particles for source apportionment, investigation of micronutrients in different ecosystems and agriculture practices among other areas of scientific investigations. A new EDXRF Spectrometer has been built and installed at the Institute of Nuclear Science and Technology, College of Architecture and Engineering, University of Nairobi. It is a new research tool that has improved local analytical detection limits of heavy metals in environmental and air pollution samples. A Siemens type D x-ray tube-stand was modified to facilitate x-ray irradiation of a Mo-secondary target. The target is a glued disk that was cut from a 1 mm thick Mo plate of 99.99 % purity. The fluoresced secondary x-rays propagate through three Ag collimators giving a near monochromatic Mo characteristic x-rays for sample excitation. The disk holder was designed to be easily removable, from the Al-measuring head, thus allowing the flexibility of carrying out experiments using different secondary targets. Air samples on Teflon filters and water samples on Cellulose filters were analyzed. The results were better than those obtained in previous spectrometer setups. The detection limits of trace elements improved by a factor of 10. The spectrometer is an extra facility for direct analysis of trace elements in air and other environmental samples.
G. DRGATARIMICHAELJ. "Gatari M., Wagner A., Boman J., Elemental composition of tropospheric aerosols in Hanoi, Vietnam and Nairobi, Kenya.". In: Sc. of Total Environ, 341: 241-249. University of Nairobi.; 2004. Abstract
There have been very few studies in Kenya on aerosols despite the global demand on aerosol ground studies in the perspective of climate and the human well being. Therefore, atmospheric aerosol studies became the basis of the work covered in this thesis which describes aerosol studies in Kenya and development of an energy dispersive X-ray fluorescence spectrometer (EDXRF). Atmospheric aerosols are composed of both the particulate and gas phases and they contain chemical compounds and elememts that are harmful to human health. Their particle size range is related to sources and this determines their impact in the ambient aatmosphere. Anthropogenic activities mainly contribute fine particles mass (PM 2.5) and natural proceses contribute both fine and course (PM (10-2.5)) particle masses. PM10 (PM 2.5 + PM (10-2.5)) are inhalable into the human respiratory system and the fine particles have a marked impact on climate. PM10 particles are efficient in transporting micronutrients between ecosystems, soiling and destroying buildings. Any policies meant to protect the environment by controlling atmospheric aerosol particles will need back up knowledge on particle sources and their physical and chemical characteristics. The five sampling campaigns covered under this study were conducted in Nairobi city, Meru and Nanyuki towns and on the slopes of Mount Kenya at about 2000m and 4000 m above the sea level. The multi-elemental analyzing capacity of EDXRF and statistical treatment of data are indispensable tools in aerosol source identification. These techniques were used in all the published results. The results revealed the dominance of local and regional biomass burning and local soil dust emissions. Traffic emissions were more pronounced in urban centers, with high concentrations of Br, Pb and Mn in Nairobi but with minor contribution at the remote sites on Mount Kenya. Marine influence was seen superimposed in the soil dust emissions and agricultural activities were also identied through elevated concentrations of Ca, Cl, K and S in the same source. Nairobi turned out to be a more polluted city in comparison to Dar es Salaam, Gaborone and Khartoum in Africa. The developed EDXRF spectrometer will play a major role in environmental studies in Kenya. Longterm measurements of Kenyan aerosols are recommended to better understand the total picture of aerosol particles including seasonal variation.
G. PROFSIMIYUVINCENT. "History of the Peoples of Bungoma District, In Bungoma District socio-cultural Profile Nairobi.". In: Indiana State University Press.; 1993. Abstract

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