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Now showing items 872-891 of 1064

    • Response of leaf yield and nutritive value of African nightshade (Solanum Villosum) genotypes to nitrogen application 

      Masinde, Peter Wafula; Onyango, Abukutsa; Abukutsa-Onyango, M; Wesonga, J.M; Ojiewo, C.O.; Agong, S.G. (African Journal of Horticultural Science, 2010-12)
      The wild-type Solanumu villosum is an important leafy vegetable in Kenya, which however is low-yielding mainly due to the early flowering and prolific fruiting. Two new genotypes of S. villosum, T-5 and octoploid with ...

    • Response of Two Sweet Potato (Ipomoea batatas L. Lam) Varieties Regenerated on Low Cost Tissue Culture Medium 

      Ogero, Kwame Okinyi; Mburugu, Gitonga Nkanata; Mwangi, Maina; Ombori, Omwoyo (David Publishing Company, Inc., 2012)
      Plant tissue culture continues to be of great interest within the realms of molecular biology, plant breeding and plant health. However, different plant cultivars have different culture efficiencies to tissue culture. In ...

    • Rethinking of botanical volatile organic compounds applied in food preservation: Challenges in acquisition, application, microbial inhibition and stimulation 

      Ma, Quan; Xu, Yanqun; Xiao, Hang; Mariga, Alfred Mugambi; Chen, Yanpei; Zhang, Xiaochen; Wang, Lei; Li, Dong; Li, Li; Luo, Zisheng (Elsevier, 2022)
      Abstract Background With the rising demand of microbiologically and chemically safe food products, conventional chemical preservatives are gradually fading away from the interests of both researchers and consumers. Thus, ...

    • Review of Carbonation Resistance in Hydrated Cement Based Materials 

      Marangu, Joseph Mwiti; Thiong, Joseph Karanja; Muthengia, Wachira J. (Elsevier, 2019)
      Blended cements are preferred to Ordinary Portland Cement (OPC) in construction industry due to costs and technological and environmental benefits associated with them. Prevalence of significant quantities of carbon dioxide ...

    • Review of Clay-Based Nanocomposites as Adsorbents for the Removal of Heavy Metals 

      Kinoti, Ismael Kithinji; Karanja, Esther Muthoni; Nthiga, Esther Wanja; M’thiruaine, Cyprian Muturia; Marangu, Joseph Mwiti (Hindawi, 2022-06-22)
      Due to rapid industrialization, urbanization, and surge in modern human activities, water contamination is a major threat to humanity globally. Contaminants ranging from organic compounds, dyes, to inorganic heavy metals ...

    • A Review of Image Processing Software Techniques for Early Detection of Plant Drought Stress 

      Kirongo, Amos (International Journal of Computer Applications Technology and Research, 2016)
      Water stress is one of the most important growth-limiting factors in crop production around the world, water in plants is required to permit vital processes such as nutrient uptake, photosynthesis, and respiration. Drought ...

    • A review of techniques for morphological analysis in natural language processing 

      Mutwiri, George; Mutua, Makau; Omamo, Amos (Meru University of Science and Technology, 2022-06)
      Natural language is a crucial tool to facilitate communication in our day-to-day activities. This can be achieved either in text or speech forms. Natural language processing (NLP) involves making computers understand and ...

    • A Review ofAgile Software Effort Estimation Methods 

      Munialo, Samson Wanjala; Muketha, Geoffrey Muchiri (International Journal of Computer Applications Technology and Research, 2016)
      Software cost estimation is an essential aspect of software project management and therefore the success or failure of a software project depends on accuracyin estimating effort, time and cost. Software cost estimation is ...

    • A Review on Feature Selection Methods For Classification Tasks 

      Mwadulo, Mary Walowe (Mary, 2016)
      In recent years, application of feature selection methods in medical datasets has greatly increased.The challenging task in feature selection is how to obtain an optimal subset of relevant and non ...

    • A Review on Feature Selection Methods For Classification Tasks 

      Mwadulo, Mary Walowe (International Journal of Computer Applications Technology and Research, 2016)
      In recent years, application of feature selection methods in medical datasets has greatly increased. The challenging task in feature selection is how to obtain an optimal subset of relevant and non redundant features which ...

    • A Review on Pyroprocessing Techniques for Selected Wastes Used for Blended Cement Production Applications 

      Nalobile, Protus; Muthengia, Wachira J.; Thiong’o, Joseph Karanja; Marangu, Joseph Mwiti (Elsevier, 2020)
      Pyroprocessing is an important stage in cement manufacturing. In this process, materials are subjected to high temperatures so asto cause a chemical or physical change. Its control improves efficiency in energy utilization ...

    • Rift Valley Fever Seroprevalence in Coastal Kenya 

      Grossi-Soyster, Elysse N; Banda, Tamara; Teng, Crystal Y; Muchiri, Eric M; Mungai, Peter L; Mutuku, Francis M; Gildengorin, Ginny; Kitron, Uriel; King, Charles H; Labeaud, A Desiree (The American Society of Tropical Medicine and Hygiene, 2017)
      Rift Valley fever virus (RVFV) causes severe disease in both animals and humans, resulting in significant economic and public health damages. The objective of this study was to measure RVFV seroprevalence in six coastal ...

    • Risk factors for Tuberculosis in Mwea West Sub-County, Kirinyaga County, Kenya 

      Amatu, Mary; Butto, Dennis; Muriuki, Dennis (IOSR Journal of Humanities and Social Scienc, 2017)
      In the year 2012, 89,568 cases of Tuberculosis (TB) were notified in Kenya. Using this figure, World health Organization (WHO) ranked the country 15th out of 22 countries with high TB burden. ...

    • RISK REDUCTION STRATEGIES AND SUPPLY CHAIN RESILIENCE IN THE PETROLEUM INDUSTRY IN KENYA 

      Lambaino, Nelson K; Guyo, Wario; Otieno, Romanus Odhiambo; Getuno, Pamela (International Journal of Economics, Commerce and Management, 2018)
      Supply chain resilience is critical for the firms operating in the modern day petroleum sector. Crude oil supply fluctuations have often caused the price of the product to vary. Also, cases of fuel adulteration have ...

    • RISK TRANSFER STRATEGIES AND SUPPLY CHAIN RESILIENCE IN THE PETROLEUM INDUSTRY IN KENYA 

      Lambaino, Nelson K; Guyo, Wario; Otieno, Romanus Odhiambo; Getuno, Pamela (International Journal of Economics, Commerce and Management, 2018)
      Supply chain risk management is critical for the success of organizations in the petroleum industry. Due to supply chain disruptions in the industry, businesses dealing with petroleum tend to face supply demand inconsistencies ...

    • Robust Classification through a Nonparametric Kernel Discriminant Analysis 

      Obudho, Macdonald G; Orwa, George O; Otieno, Romanus Odhiambo; Were, Festus A (Scientific Research Publishing, 2022-08-10)
      The problem of classification in situations where the assumption of normality in the data is violated, and there are non-linear clustered structures in the dataset is addressed. A robust nonparametric kernel discriminant ...

    • Robust Estimation of Finite Population Totals Using a Model Based Approach in the Presence of Two Auxiliary Variables 

      Mulwa, Damaris Felistus; Orwa, George Otieno; Otieno, Romanus Odhiambo (International Journal of Data Science and Analysis, 2018)
      The utilization of auxiliary information during surveys increases the accuracy of estimators, thereby giving more reliable estimates of the population parameters of interest. It has been established that the presence of ...

    • Robust estimation of the error variance of the ratio estimator 

      Otieno, Romanus Odhiambo (Egerton Journal of Humanities, Social Sciences and Education, 1999)

    • ROBUST ESTIMATION OF VARIANCE IN THE PRESENCE OF NEAREST NEIGHBOUR IMPUTATION 

      Wafula, Charles; Otieno, Romanus Odhiambo; Mwenda, Mugo Maxwell (African Journal of Science and Technology, 2003)
      The problem of estimating the variance of an estimator of the population total when missing values have been filled using a Nearest Neighbour (NN) imputation method is considered. The estimator is developed assuming a more ...

    • Robust estimation of variance in the presence of nearest neighbour imputation 

      Wafula, Charles; Otieno, Romanus Odhiambo; Mwenda, Mugo Maxwell (African Network of Scientific and Technical Institutions (ANSTI), 2003)
      The problem of estimating the variance of an estimator of the population total when missing values have been filled using a Nearest Neighbour (NN) imputation method is considered. The estimator is developed assuming a more ...