Bio

Short Bio

Michel James Gatari Gichuru has a PhD in Environmental Science with specialization in Physics, a Diploma from European Research Course on Atmospheres and a licentiate in Environmental Physics. He is an Associate Professor in Applications of Nuclear Science Techniques and he teaches/lectures postgraduate courses at the Institute of Nuclear Science and Technology in the University of Nairobi. He has co-supervised 4 PhD and 33 MSc (2014-2015) to completion, and 9 PhD and 20 MSc are on-going.

Publications


Submitted

Mwangi, E, Gatari M.  Submitted.  Curriculum Development of a Nuclear Engineering Course for Human Resources Enhancement in the Kenya Nuclear Energy Program. kns.org. AbstractWebsite

In order to increase generation capacity from reliable sources, Kenya has proposed to install a low-end nuclear power plant to supplement the envisaged short fall. At the moment, most of the power is generated from hydro and geothermal sources. Although an expansion of …

Maina, DM, Gatari MM, Bartilol SK, Nguli MK.  Submitted.  ESSENTIAL TRACE METALS IN SELECTED MAIZE FLOUR BRANDS CONSUMED IN NAIROBI, KENYA: APPLICATION OF TXRF. imeko.org. AbstractWebsite

Human beings obtain their essential trace metals form their diets. The objective of this study was to determine the Mn, Fe, Cu, and Zn concentration levels in maize flour and based on the results estimate the daily intake of these essential metals through consumption of Ugali; …

MWANIA, MJM, GATARI MJ, MAINA MDM, KINYUA R.  Submitted.  Recycled waste plastics composite: Possible construction material for wind turbine blades. promitheasnet.kepa.uoa.gr. AbstractWebsite

Electrical power supply in Sub Saharan Africa (SSA) is expensive and very low, and most families have no chance of accessing clean lighting and cooking power. Off grid systems are the best viable solution in SSA and wind energy has a potential. However, the components …

NYAMBANE, MN, GATARI MJ, Githiri JG,....  Submitted.  Energy and Exergy Analysis Concepts: Modelling of Olkaria II Geothermal Power Plant in Kenya. promitheasnet.kepa.uoa.gr. AbstractWebsite

Condensers of geothermal power plants need to operate at low pressures to ensure optimal use of energy resources. To optimize the steam condensation process cooling water temperature is varied to determine the value that gives a higher condenser efficiency …

Kairu, WM, Gatari MM, MUIA ML, Mumenya SW,....  Submitted.  Health monitoring of concrete using rebar-guided ultrasound. pdfs.semanticscholar.org. AbstractWebsite

Concrete is one of the commonly used materials worldwide in the construction industry due to its durability [1]. Civil infrastructures such as power plants, bridges and large buildings are typically built using concrete. It is typically composed of aggregate, sand, cement, water as …

BIRIR, JK, GATARI MJ, RAJAGOPAL P, MUIA ML.  Submitted.  Improved Resolution in Guided Wave Testing. pdfs.semanticscholar.org. AbstractWebsite

Guided wave technology is today widely used for long range ultrasonic testing, especially for pipeline, tank floor and rail track condition monitoring. In pipeline inspection for instance guided wave testing (GWT) offers advantages over other mainstream technologies such as …

2019

GATARI, MJ.  2019.  First WHO Global Conference on Air Pollution and Health: A Brief Report. Clean Air Journal. : scielo.org.za AbstractWebsite

The subject conference (documented in www. who. int) was organized by WHO in collaboration with WMO, CCAC, UNFCC, UNECE, The World Bank, UN-DESA and EU-DEVCO in Geneva, Switzerland from 30 October to 01 November 2018. The conference …

Gitau, J, GATARI MJ, Pant HJ.  2019.  Investigation of flow dynamics of porous clinkers in a ball mill using technitium-99m as a radiotracer. Applied Radiation and Isotopes. : Elsevier AbstractWebsite

A radiotracer investigation was carried out in a ball mill of a cement plant in Kenya. Residence time distribution (RTD) of raw feed to the mill was measured using Technetium-99m adsorbed on the clinkers as a radiotracer. From the measured RTDs, solid holdup and …

GATARI, MJ, Kinney PL, Yan B, Sclar E,....  2019.  High airborne black carbon concentrations measured near roadways in Nairobi, Kenya. … Research Part D …. : Elsevier AbstractWebsite

Airborne black carbon (BC) particles have serious implications for human health and climate change and thus represent a prime target for mitigation policies. The sources of BC include vehicles burning diesel fuel, which are common in urban areas in low-income countries. The …

2018

Blake, R, Pope F, Gatari M.  2018.  Airborne particulate matter monitoring in Nairobi, Kenya using calibrated low cost sensors. EGU General Assembly …. : adsabs.harvard.edu AbstractWebsite

This study investigated the use of low cost optical particle counters (OPCs) to measure particulate matter (PM) pollution in Nairobi, Kenya, between February and March 2017. Measurements were performed in three locations, an urban background and urban roadside …

Maier, Y, Schneider L, Thomson ES,....  2018.  Ice nucleating particles at the Mt. Kenya GAW Station. EGU General …. : adsabs.harvard.edu AbstractWebsite

The number concentration and composition of ice nucleating particles (INP) at Mt. Kenya Global Atmosphere Watch (GAW) Station (0 9'S, 37 19'O, 3678 m asl) were measured during August and September 2015. With the ITCZ being located some 1900 km north of the station …

Maina, EG, Gachanja AN, GATARI MJ, Price H.  2018.  Demonstrating PM2.5 and road-side dust pollution by heavy metals along Thika superhighway in Kenya, sub-Saharan Africa. … monitoring and assessment. : Springer AbstractWebsite

This study assessed the level of heavy metal in roadside dust and PM 2.5 mass concentrations along Thika superhighway in Kenya. Thika superhighway is one of the busiest roads in Kenya, linking Thika town with Nairobi. Triplicate road dust samples …

Pope, FD, Gatari M, Ng'ang'a D,....  2018.  Airborne particulate matter monitoring in Kenya using calibrated low cost sensors [discussion paper]. Atmospheric …. : insight.cumbria.ac.uk AbstractWebsite

East African countries face an increasing threat from poor air quality, stemming from rapid urbanisation, population growth and a steep rise in fuel use and motorization rates. With few air quality monitoring systems available, this study provides the much needed high temporal …

Maina, EG, Gachanja AN, Gachanja AN, Price H.  2018.  Demonstrating PM2.5 and road-side dust pollution by heavy metals along Thika superhighway in Kenya, sub-Saharan Africa. Environmental Monitoring and Assessment. (190):251.
Pope, FD, Michael Gatari, Ng’ang’a D, Poynter A, Blake R.  2018.  Particulate matter air pollution monitoring in Nairobi, Kenya using calibrated low cost sensors. . Atmos Chem and Phys.

2017

Mukaria, SM, Wahome RG, Gatari M,....  2017.  Particulate Matter from Motor Vehicles in Nairobi Road Junctions Kenya. Journal of Atmospheric …. : academia.edu AbstractWebsite

Motor air pollution has become a problematic issue both within as it contributes to environmental degradation. It is evident that air crises in cities continue to rise partly because of the increasing levels of motor vehicle emissions. With the expansion of the …

Mukaria, SM, Thenya T, Wahome RG,....  2017.  Analysis and Perception of Health Impact of Motor Vehicle Emissions on Traffic Police in Nairobi, Kenya. … Pollution and Human …. : academia.edu AbstractWebsite

Clean air is important for human health and well-being, air pollution has increased in many parts worldwide and thus posing a significant threat people's health. In Kenya, the traffic police officers who constantly un covered stand on road junctions continuously expose …

Mukaria, SM, Wahome KKRG, Thenya T,....  2017.  Traffic Police Knowledge Awareness, Attitude and Practice on Motor Vehicle Pollution City of Nairobi-Kenya. Journal of Environment …. : academia.edu AbstractWebsite

People's knowledge of awareness, attitudes and practices towards motor vehicle emissions that are dangerous and a requirement is paramount for reducing exposure among people, their impact and response of interventions that are aimed at encouraging behavioral …

Mburu, CW, Gaita SM, Knee CS, GATARI MJ,....  2017.  Influence of Yttrium Concentration on Local Structure in BaZr1–xYxO3−δ Based Proton Conductors. The Journal of …. : ACS Publications AbstractWebsite

The evolution of local structure, coordination of protons, and proton conductivity in yttrium-doped barium zirconate, BaZr1–x Y x O3− δ (x= 0–0.5), has been investigated using thermal-gravimetric analysis, impedance spectroscopy, and infrared spectroscopy. Low-frequency …

O.M.Ondimu, V.A.Ganesan, GATARI MJ, Marijnissen JCM, Agostinho LLF.  2017.  Modeling simple-jet mode electrohydrodynamic-atomization droplets' trajectories and spray pattern for a single nozzle system. Journal of Electrostatics. 89:77-87.
Mburu, CW, Gaita SM, Knee CS, Gatari MJ, Karlsson M.  2017.  Influence of Yttrium Concentration on Local Structure in BaZr1−xYxO3−δ Based Proton Conductors. J. Phys. Chem.. 121(30):16174-16181.
Mukaria, SM, Thenya T, Raphael G Wahome, Karatu K.  2017.  Analysis and Perception of Health Impact of Motor Vehicle Emissions on Traffic Police in Nairobi, Kenya. Journal of Environment Pollution and Human Health. 5(3):104-110.
Mukaria, SM, Wahome KKRG, Thenya T, Michael Gatari.  2017.  Traffic Police Knowledge Awareness, Attitude and Practice on Motor Vehicle Pollution City of Nairobi-Kenya. Journal of Environment Pollution and Human Health. 5(3):111-116.
Gatari, MJ, Kinney PL, Yan B, Sclar E, Volavka-Close N, Ngo N, Gaita SM, Law A, Ndiba PK, Gachanja A, Graeff J, Chillrud SN.  2017.  High airborne black carbon concentrations measured near roadways in Nairobi, Kenya. Transportation Research. Transportation Research Part D: Transport and Environment. 68:99-109.

2016

Maina, DM, Ndirangu DM, Mangala MM,....  2016.  Environmental implications of high metal content in soils of a titanium mining zone in Kenya. … Science and Pollution …. : Springer AbstractWebsite

Mining activities contribute to an increase of specific metal contaminants in soils. This may adversely affect plant life and consequently impact on animal and human health. The objective of this study was to obtain the background metal concentrations in soils around the …

Gaita, SM, Boman J, GATARI MJ, Wagner A,....  2016.  Characterization of size-fractionated particulate matter and deposition fractions in human respiratory system in a typical African city: Nairobi, Kenya. Aerosol Air Qual …. : aaqr.org AbstractWebsite

Information from elemental and mass composition of size-fractionated airborne particle matter (PM) provides insightful knowledge about their impact on human health, meteorology and climate. To attain insight into the nature of sizefractionated PM from a typical African city …

Egondi, T, Muindi K, Kyobutungi C, Gatari M,....  2016.  Measuring exposure levels of inhalable airborne particles (PM2. 5) in two socially deprived areas of Nairobi, Kenya. Environmental …. : Elsevier AbstractWebsite

Introduction Ambient air pollution is a growing global health concern tightly connected to the rapid global urbanization. Health impacts from outdoor air pollution exposure amounts to high burdens of deaths and disease worldwide. However, the lack of systematic collection of …

DM, M, DM N, MM M, J B, K S, MJ G.  2016.  Environmental implications of high metal content in soils of a titanium mining zone in Kenya. Environ Sci Pollut Res. 23(21):21431-21440.

2015

Ngo, NS, Gatari M, Yan B, Chillrud SN,....  2015.  Occupational exposure to roadway emissions and inside informal settlements in sub-Saharan Africa: A pilot study in Nairobi, Kenya. Atmospheric …. : Elsevier AbstractWebsite

Few studies examine urban air pollution in sub-Saharan Africa (SSA), yet urbanization rates there are among the highest in the world. In this study, we measured 8-hr average occupational exposure levels of fine particulate matter (PM 2.5), black carbon (BC), ultra …

2014

Gatari, M, Berhane Z, Ulmer L, Omanga E.  2014.  Industrial air pollution in rural Kenya: community awareness, risk perception and associations between risk variables. : oa.las.ac.cn AbstractWebsite

Background Developing countries have limited air quality management systems due to inadequate legislation and lack of political will, among other challenges. Maintaining a balance between economic development and sustainable environment is a challenge …

Nyambura, M, Gatari M, Hillier S, Shepherd KD,....  2014.  Development of an X-ray method for mineralogical analysis of Africa soils using a benchtop diffractometer. Food and nutrition …. : portal.mtt.fi AbstractWebsite

Page 1. www.mtt.fi/foodafrica Development of an x-ray method for mineralogical analysis of Africa soils using a benchtop diffractometer 16 June 2014, Helsinki, Finland. FoodAfrica midterm seminar Mercy Nyambura1*, 2, Michael Gatari1, Stephen Hillier3*, Keith D. Shepherd2, Esala Martti4 …

Galgallo, A, Gatari M, Keskinen R, Esala M,....  2014.  Total and Extractable Trace Elements in Soil. 한국토양비료학회 학술 …. : dbpia.co.kr AbstractWebsite

Although agriculture is the main economic activity in Sub Saharan Africa, this region still has the highest prevalence of malnutrition in the world. Its per capita food production has also been on the decline for the last two decades. The African soil resource is over utilized and …

Mutuli, SM, BIRIR JK, Maina DM, Kairu WM, Gatari MM.  2014.  Welding Quality in Kenya: Application of Radiography. : erepository.uonbi.ac.ke AbstractWebsite

In Kenya, welding services are extensively employed in both the formal and informal sectors. The needs continue to increase with increasing population, infrastructure and vehicle fleet, and economic development. Welding need is even currently very important in support of …

Borgese, L, Bilo F, Tsuji K, Fernández-Ruiz R,....  2014.  First total reflection X-ray fluorescence round-robin test of water samples: Preliminary results. … Acta Part B: Atomic …. : Elsevier AbstractWebsite

Abstract Total Reflection X-Ray Fluorescence (TXRF) is a mature technique to evaluate quantitatively the elemental composition of liquid samples deposited on clean and well polished reflectors. In this paper the results of the first worldwide TXRF round-robin test of …

Omanga, E, Ulmer L, Berhane Z, Gatari M.  2014.  Industrial air pollution in rural Kenya: community awareness, risk perception and associations between risk variables. BMC public health. : Springer AbstractWebsite

Background Developing countries have limited air quality management systems due to inadequate legislation and lack of political will, among other challenges. Maintaining a balance between economic development and sustainable environment is a challenge …

Gaita, SM, Boman J, GATARI MJ, Pettersson JBC,....  2014.  Source apportionment and seasonal variation of PM2.5 in a Sub-Saharan African city: Nairobi, Kenya.. … Chemistry & Physics. : d-nb.info AbstractWebsite

Sources of airborne particulate matter and their seasonal variation in urban areas in Sub-Saharan Africa are poorly understood due to lack of long-term measurement data. In view of this, filter samples of airborne particulate matter (particle diameter≤ 2.5 µm, PM2. 5) were …

Omanga, E, Ulmer L, Berhane Z, Michael Gatari.  2014.  Industrial air pollution in rural Kenya: community awareness, risk perception and associations between risk variables. BMC Public Health. 14:377.

2013

Kinyua, AM, Maina DM, MANGALA MJ, GATARI MJ.  2013.  Energy Dispersive X-Ray Fluorescence (EDXRF) in Non-Destructive Testing of Oil Samples. AbstractWebsite

A rapid non-destructive, multi-elemental and ultra-sensitive analytical technique of engine oil analysis is described. Using" an x-ray excitation source and Si(Li) detector for the1 measurements, the deterioration of an internal combustion engine) is evaluated from results of concentration levels of Ti, Ca, Mn, Cr, Fe, Cu, Zn, Pb and Br. Analysis of these elements from samples of new and used engine oil from a commercial brand showed significant increases in the levels of Fe(164%), Br(5022%) and Pb (65000%) after an engine had run a distance of 1103 km. No major increases were noticed for the other elements. The changes are due to the wear and tear of engine parts and subsequent contamination of the engine oil. The increase of Pb and Br is due to the leakage of exhaust fuel gases from the combustion chambers which indicate the need for new piston rings, for this particular motor car engine.

2012

Kinney, Patrick L; Gichuru, MG; V-CN; NN; NPLA; GA;K; G.  2012.  Traffic Impacts on PM2.5 Air Quality in Nairobi, Kenya.

2011

Kinney, PL, Gichuru MG, Volavka-Close N,....  2011.  Traffic impacts on PM2. 5 air quality in Nairobi, Kenya. Environmental science & …. : Elsevier AbstractWebsite

Motor vehicle traffic is an important source of particulate pollution in cities of the developing world, where rapid growth, coupled with a lack of effective transport and land use planning, may result in harmful levels of fine particles (PM 2.5) in the air. However, a lack of air …

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