Now showing items 132-151 of 240

    • Modifying Surber sampling technique increases capture of freshwater crabs in African upland streams. Inland Waters. 2:11-15 

      Magana, Adiel; Dobson, Michael; Mathooko, Jude M. (2017-04-03)
      We compared 2 methods for sampling the freshwater crab Potamonautes odhneri (Colosi) in Kenyan streams: standard Surber sampling, in which a sample is taken over a period of several minutes; and rapid Surber sampling, ...
    • Molecular characterization of wood ear mushrooms [Auricularia sp.] from Kakamega Forest in Western Kenya 

      B.O., Onyango; C. M., Mbaluto; C. S., Mutuku; D. O., Otieno (Current Research in Environmental & Applied Mycology, 2016-03-30)
      Mushrooms of the genus Auricularia, generally termed wood ear mushrooms are in high demand in Western Kenya due to their numerous medicinal and nutritional properties. Interventions to characterize and conserve the native ...
    • A Multi-Faceted Approach to Mobile Agent Security 

      Ngereki, Anthony M.; Kahonge, Andrew M. (2015-06)
      Mobile agents are increasingly becoming popular in the development of current distributed applications. However, the mobility and autonomy factors of mobile agents present a host of security challenges in a ...
    • Near Surface Anomaly Depth Estimation Using Downward Continuation 

      Odek, Antony (2018-10)
      Depth estimation in gravity survey is very important in mineral prospecting. It does not only inform the choice of the optimal point for mineral exploration but also very important in analyzing economical viability of the ...
    • Nephrotoxicity effects of Khat (Catha edulis) on mice when administered orally 

      Kimutai, Rogers; Gitonga, Godfrey (2017-03)
      Renal problems are currently on increase worldwide. Some factors suspected to be the cause of the renal problems are drug abuse. Hence, this study investigated possible renal toxicity effect of ...
    • NEW METALLOCHROMIC INDICATORS FOR COMPLEXOMETRIC TITRATION OF COPPER (II) IN PRESENCE OF INTERFERING SPECIES 

      Ombaka, Ochieng (Life Science Informatics Publications, 2020-09)
      Six hydroxytriazenes has been introduced as a metallochromic indicator in the complexometric titration with EDTA and applied successfully to the titration of copper (II). A direct method of titration of Cu (II) with EDTA ...
    • Nitrogen Fixation by Natural Populations of Acacia Senegal in the Drylands of Kenya Using 15N Natural Abundance 

      Githae, Eunice W.; Gachene, Charles K.K.; Njoka, Jesse T.; Omondi, Stephene F. (Taylor and Francis Online, 2013-06-24)
      Nitrogen (N) fixation was estimated for three Acacia senegal (L.) (A. senegal) Willd. varieties (A. senegal var. senegal, kerensis, and leiorhachis) growing naturally in different sites in the dryland areas of Kenya. The ...
    • Nonthermal synthesis of three-dimensional metal oxide structures under continuous-flow conditions and their catalytic applications 

      King’ondu, Cecil K. †; Opembe, Naftali N. †; Genuino, Homer C. †; Garces, Hector F. ‡; Njagi, Eric C. †; Iyer, Aparna †; Huang, Hui †; Dharmarathna, Saminda †; Suib, Steven L. *†‡ (American Chemical Society, 2011-10-25)
      Continuous-flow synthesis of one-dimensional (1D) metal oxide nanostructures and/or their integration into hierarchical structures under nonthermal conditions is still a challenge. In this work, a nonthermal, continuous-flow ...
    • Norm Estimates for Norm-attainable Elementary Operators 

      Kinyanjui, J. N.; Okelo, N. B.; Ongati, O.; Musundi, S. W. (HIKARI ltd, 2018-03-20)
      In this paper we estimates the norms of norm-attainable elementary operators: inner derivations, generalized derivation, basic elementary operator and Jordan elementary operator.
    • Norm- Attainability of Generalized Finite Operators on C*- Algebra 

      Sule, Amenya C.; Sammy, Musundi W.; Jacob, Kirimi (Modern Scientific Press Company, 2022)
      Norm -attainability of elementary operators on Hilbert and Banach spaces have been Characterized by many mathematicians. However, there is little information on Normattainability of generalized finite operators on C*-algebra. ...
    • A note on quasi-similarity of operators in Hilbert spaces 

      Isaiah, N. Sitati 1; Musundi, Sammy W. 2*; Nzimbi, Bernard M. 3; Kikete, W. Dennis 3 (2015-01)
      In this paper we introduce the notion of Quasi-similarity of bounded linear operators in Hilbert Spaces. We do so by defining a quasi-affinity from one Hilbert Space H to K. Some results on quasi-affinities are also ...
    • A NOTE ON QUASI-SIMILARITY OF OPERATORS IN HILBERT SPACES 

      SAMMY W. MUSUNDI; ISAIAH N.SITATI; BERNARD M. NZIMBI; KIKETE W. DENNIS (International Journal of Mathematical Archive, 2015-07-23)
      In this paper we introduce the notion of Quasi-similarity of bounded linear operators in Hilbert Spaces. We do so by defining a quasi- affinity from one Hilbert Space H to K. Some results on quasi- affinities are also ...
    • Novel Sources of Witchweed (Striga) Resistance from Wild Sorghum Accessions 

      Mbuvi, Dorothy 1; Masiga, Clet W. 2,3; Kuria, Eric 1; Masanga, Joel 1; Wamalwa, Mark 1; Mohamed, Abdallah 4; Odeny, Damaris 5; Hamza, Nada 3,6; Timko, Michael P. 7*; Runo, Stephene 1* (2017-02)
      Sorghum is a major food staple in sub-Saharan Africa (SSA), but its production is constrained by the parasitic plant Striga that attaches to the roots of many cereals crops and causes severe stunting and loss of yield. ...
    • Occurrence and abundance of plant parasitic nematodes in cabbage-based cropping systems in Kenya. 

      Mwangi, J. M.1; Waceke, J. W. 2; Kariuki, G. M. 2 (2014-10)
      A survey was conducted to determine the incidences of plant parasitic nematodes (PPN) and factors enhancing population build-up in cabbage (Brassica oleracea L. var capitata)-based cropping system in selected agro-ecological ...
    • Occurrence of Pathogenic Bacteria Harboring Antibiotic Resistant Genes in River Njoro in Nakuru County 

      Itotia, T. K. 1; Muia, A. W. 2; Kiruki, S. K. 3; Getenga, Z. 3 (2018)
      Njoro River drains an agricultural catchment whose main livelihood activities are livestock rearing and employment in light industries. The limited quantities of piped water supplies coupled with inadequate sanitary ...
    • On Almost Similarity and Metric Equivalence of operators. Accepted for publication 

      Nzimbi, B. M. 1; Luketero, S. W.1; Sitati, I. N. 2; Musundi, S.W. 3; Mwenda, E 3 (2016-06)
      In this paper, we investigate almost-similarity relation, metric equivalence and other relations of operators on Hilbert spaces. We characterize almost-similar, metrically equivalent operators. Roughly speaking, we consider ...
    • On Almost Similarity Operator Equivalence Relation 

      Musundi, S. Wabomba 1*; Sitati, N. Isaiah 2; Nzimbi, B. Mutuku 3; Murwayi, A. Wunani 4 (2013-06)
      We consider the almost similarity property which is a new class in operator theory and was first introduced by A. A. S. Jibril. We establish that almost similarity is an equivalence relation. Some results on almost similarity ...
    • On Analytical Approach to Semi-open/Semi-closed sets in Metric Spaces” 

      Musundi, Sammy Wabomba; Kinyili, Musyoka; Ohuru, Priscah Moraa (Science Publishing Group, 2017-03-03)
      The concept of open and closed sets has been extensively discussed on both metric and topological spaces. Various properties of these sets have been proved under the underlying spaces. However, scanty literature is available ...
    • On Characterization of u-ideals determined by sequences’’ 

      Matuya, wanyonyi john; Makila, Patrick; Simiyu, Achiles; Shem, Aywa; Musundi, Sammy (2013)
      The area of ideals is important in the study of Analysis, algebra, Geometry and Computer science. The various types of ideals have been studied, for example m ideals and h ideals. The m ideals defined on real Banach spaces ...
    • On Similarity and Quasisimilarity equivalence relations 

      Sitati, Isaiah Nalianya; Musundi, Sammy Wabomba; Nzimbi, Benard Mutuku; Kirimi, Jacob (2012-01)
      Similarity and unitary equivalence can be shown to be of equivalence relations. We discuss a result showing that two similar operators have equal spectra (i.e. point and approximate point spectrum). More ...