Browsing School of Science and Computing (JA) by Issue Date

Browsing School of Science and Computing (JA) by Issue Date

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  • Germination Effects of Purposive Bruchid Screening of African Ebony (Dalbergia Melanoxylon) Seeds In the Arid and Semi-Arid Region of South Eastern Kenya 
    Kimatu, Josphert N.; Musimba, Nashon K. R.; Mweu, Benard M.; Mburu, Mary W. K.; Nguluu, Simon N. (Pak Publishing Group, 2015)
    The African ebony (Dalbergia melanoxylon) is a tree that is crucial in making of high value wooden traditional artifacts, however its slow growth in the arid and semi-arid lands (ASALs), poor germination and low seedling ...
  • Real-world complexity of food security and biodiversity conservation 
    Habel, Jan C.; Teucher, Mike; Hornetz, Berthold; Jaetzold, Ralph; Kimatu, Josphert N.; Kasili, Sichangi; Mairura, Zachariah; Mulwa, Ronald K.; Eggermont, Hilde; Weisser, Wolfgang W.; Lens, Luc (Springer Netherlands, 2015-01)
    Feeding the booming human population and at the same time conserving biodiversity is a global challenge. Yet, it is particularly acute in developing countries where biodiversity is high and food-security low. There is an ...
  • Analysis of the 35khz - 60khz Ultrasound o f O. Tormota Evoking Optimal Startle Response in t he African A. Gambiae S. S. 
    Maweu, Onesmus M.; Mang’ are, P. A.; Ndiritu, F. G.; Vulule, J. M. (2015-02)
    The Chinese frog, Odorrana tormota generate s ultrasound naturally through vocal apparati . This ultrasou nd detectable by the female Anopheles gambiae antennae evoked evasive response due to neural stress and fear f or ...
  • Analysis of Major Genome Loci Underlying Artemisinin Resistance and pfmdr1 Copy Number in pre- and post-ACTs in Western Kenya 
    Ng'ang'a, Zipporah W.; Ngalah, Bidii S.; Ingasia, Luiser A.; Cheruiyot, Agnes C.; Chebon, Lorna J.; Juma, Dennis W.; Muiruri, Peninah; Onyango, Irene; Ogony, Jack; Yeda, Redemptah A.; Cheruiyot, Jelagat; Mbuba, Emmanuel; Mwangoka, Grace; Achieng, Angela O.; Andagalu, Ben; Akala, Hoseah M.; Kamau, Edwin; Kamau, Edwin (Nature Publishing Group, 2015-02-08)
    Genetic analysis of molecular markers is critical in tracking the emergence and/or spread of artemisinin resistant parasites. Clinical isolates collected in western Kenya pre- and post- introduction of artemisinin combination ...
  • Laboratory Evaluation of the Validity of the Current HIV Testing Algorithm in Kenya 
    Kiptoo, Michael K.; Kimotho, James; Nyairo, Edna; Ochwoto, Missiani; Nzioka, Nicholas; Ogolla, Francis; Ng'ang'a, Zipporah W. (Science publishing group, 2015-02-15)
    Background: The HIV Lateral Flow Tests (LFTs) provide a good compromise between accuracy, cost, speed and overall effectiveness. Objective: This study assessed the laboratory performance of the LFTs in the current National ...
  • A Kenyan endemic bird species Turdoides hindei at home in invasive thickets 
    Mulwa, Ronald K.; Teucher, Mike; Fischer, Christina; Busch, Christin; Horn, Michelle; Igl, Jana; Kerner, Janika; Müller, Anke; Habel, Jan C. (Elsevier, 2015-03)
    Thickets along rivers in Eastern Kenya are important habitats for many endangered species. These habitats also provide fundamental ecosystem services for humans. Intense anthropogenic activities during the past decades ...
  • Correlating aluminium toxicity, heterosis and epigenetic mechanisms in maize yield improvement in acid soils 
    Kimatu, Josphert N. (Academic Journals, 2015-03)
    Overuse of inorganic fertilizers have contributed to an increase in soil acidity in global arable land and consequently caused an increase in Aluminium ion (Al3+) toxicity and a reduction of crop yield of between 30-50% ...
  • Big data and business support: strategies and challenges 
    Mogire, Obwaya; Mariga, Wambugu G.; Kimani, Charity; Wambui, Irene; Loki, Michael (IJECM Pub UK, 2015-03)
    In recent years, the world has witnessed a growth in electronic data resulting from advancement in computing technologies. Making sense out of this data has evolved from decision support, to executive support, to online ...
  • A new measurement of the neutron detection efficiency for the NaI Crystal Ball detector 
    Martemianov, M.; Kulikov, V.; Demissie, B. T.; Marinides, Z.; Akondi, C. S.; Annand, J. R.; Arends, H. J.; Beck, R.; Borisov, N.; Braghieri, A.; Briscoe, W. J.; Cherepnya, S.; Collicott, C.; Costanza, S.; Downie, E. J.; Dieterle, M.; Ferretti Bondy, M. I.; Fil'kov, L. V.; Garni, S.; Glazier, D. I.; Glowa, D.; Gradl, W.; Gurevich, G.; Hornidge,D.; Huber, G. M.; Kaeser, A.; Kashevarov, V. L.; Keshelashvili, I.; Kondratiev, R.; Korolija, M.; Krusche, B.; Lazarev, A.; Linturi, James M.; Lisin, V.; Livingston, K.; MacGregor, I. J.; Manley, D. M.; Martel, P. P.; Middleton, D. G.; Miskimen, R.; Mushkarenkov, A.; Neganov, A.; Neiser, A.; Oberle, M.; Ostrick, M.; Ott, P.; Otte, P. B.; Oussena, B.; Pedroni, P.; Polonski, A.; Prakhov, S.; Ron, G.; Rostomyan, T.; Sarty, A.; Schott, D. M.; Schumann, S.; Sokhoyan, V.; Steffen, O.; Strakovsky, I. I.; Strub, Th.; Supek, I.; Thiel, M.; Thomas, A.; Unverzagt, M.; Usov, Yu.A.; Wagner, S.; Watts, D. P.; Wettig, J.; Werthmüller, D.; Witthauer, L.; Wolfes, M. (IOP Publishing, 2015-04)
    We report on a measurement of the neutron detection efficiency in NaI crystals in the Crystal Ball detector obtained from a study of single π0 photoproduction on deuterium using the tagged photon beam at the Mainz Microtron. ...
  • High Seroprevalence of Antibodies against Spotted Fever and Scrub Typhus Bacteria in Patients with Febrile Illness, Kenya 
    Thiga, Jacqueline W.; Mutai, Beth K.; Eyako, Wurapa K.; Ng'ang'a, Zipporah W.; Jiang, Ju; Richards, Allen L.; Waitumbi, John N. (Centers for Disease Control and Prevention, 2015-04)
    Serum samples from patients in Kenya with febrile illnesses were screened for antibodies against bacteria that cause spotted fever, typhus, and scrub typhus. Seroprevalence was 10% for spotted fever group, <1% for typhus ...
  • Electron tunneling 
    King’ondu, Cecil K. (2015-04-22)
  • Quantitation of the Total Catechin Content in Oils Extracted from Seeds of Selected Tea ( Camellia sinensis (L) O. Kuntze, Theaceae) Clones by RP -HPLC 
    George, Kelvin O.; Moseti, Kelvin O.; Wanyoko, John K.; Kinyanjui, Thomas; Wachira, Francis N. (Scientific Research Publishing, 2015-04-30)
    Catechins (flavan -3-ols) are polyphenolic plant secondary metabolites tha t have been strongly associated with a wide variety of beneficial health effects in vitro , in vivo and clinically. This ...
  • Nutritional suitability of bred sorghum ( Sorghum bicolor ) accessions from East Africa 
    Kiprotich, Felix; Charles, Mwendia M.; Cheruiyot, Erick K.; Wachira, Francis N. (Academic Journals, 2015-05)
    In many semi-arid and tropical areas of the world especially in sub Saharan Africa, sorghum is a staple food grain and has great potential to be used in various industries. Thirty sorghum highland and open pollinated ...
  • Genetic variation of biochemical characteristics of selected sorghum varieties from East Africa 
    Kiprotich, Felix; Cheruiyot, Erick; Mwendia, Charles M.; Wachira, Francis N.; Kimani, Paul (Academic Journals, 2015-05)
    A total of 30 sorghum varieties from East Africa were analysed for their biochemical characteristics. The objective was to ascertain the extent of the genetic diversity underlying their biochemical and physiological ...
  • On the joint essential maximal numerical ranges 
    Cyprian, O. S.; Masibayi, Andrew; Okelo, N. B. (Hindawi, 2015-05)
    The concept of maximal numerical range of a bounded operator T on B(X) was introduced and studied in by Stampfli who used it to derive an identity for the norm of derivation. This concept was later generalised by Ghan ...
  • Curvilinear co-ordinates and expression of motion equations from vector form to cylindrical co-ordinates 
    Cyprian, O. S.; Masibayi, Andrew; Okelo, N. B. (Hindawi, 2015-05)
    In this paper, we consider at the equations of motion in vector form and convert them to cylindrical coordinates.We also consider the continuity and momentum properties of these equations.
  • Expression of motion equations from vector form to spherical coordinates 
    Masibayi, Andrew; Cyprian, O.S; Okelo, N. B. (Hindawi, 2015-05)
    Navier-Stokes equations are the equations of conservation of linear momentum.In this paper we express this type of equation from vector form to spherical co-ordinates. We refer to some equations in this paper ...
  • On the convexity of the joint essential numerical ranges 
    Cyprian, O. S.; Masibayi, Andrew; Okelo, N. B. (Hindawi, 2015-05)
    The concept of essential numerical range of an operator was defined and studied by Stampfli and Williams in 1972. In this paper, we consider the joint essential numerical range of an m-tuple of operators T = (푇1,...,푇푚)in ...
  • Breast Milk as a Potential Source of Epstein-Barr Virus Transmission Among Infants Living in a Malaria-Endemic Region of Kenya 
    Daud, Ibrahim I.; Coleman, Carrie B.; Smith, Nicholas A.; Ogolla, Sidney; Simbiri, Kenneth; Bukusi, Elizabeth A.; Ng'ang'a, Zipporah W.; Sumba, Peter O.; Vulule, John; Ploutz-Snyder, Robert; Dent, Arlene E.; Rochford, Rosemary (Oxford University Press, 2015-05-17)
    Background.We  previously reported that infants in Kenya were infected with Epstein-Barr virus (EBV) at <6 months of age, suggesting that mothers were the likely source of transmissible virus to the infant. In this study, ...
  • Knowledge on human papilloma virus and acceptability of human papilloma virus vaccine among mothers seeking maternal-child health services at Mbagathi District Hospital, Nairobi, Kenya 
    Ng'ang'a, Zipporah W.; Masese, A. B.; Kharama, M. (2015-07)
    The Human Papilloma Virus (HPV) is one of the most common sexually transmitted viruses worldwide and is associated with cervical cancer. Through research a prophylactic HPV vaccine has been developed and has proven effective ...

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