Browsing School of Biological and Physical Science by Title
Now showing items 795-814 of 925
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Simultaneous quantification of acetaminophen and tryptophan using a composite graphene foam/Zr-MOF film modified electrode
(New Journal of Chemistry, 2020) -
Single and binary adsorption of sulfonamide antibiotics onto iron-modified clay: linear and nonlinear isotherms, kinetics, thermodynamics, and mechanistic studies
(Springer International Publishing, 2018-10-01)Iron-modified raw kaolinite clay (Fe-MC) was synthesized by co-precipitation method, characterized, and then applied as a low-cost adsorbent to sequester sulfachloropyridazine (SCP) and sulfadimethoxine (SDM), emergent ... -
Single and binary adsorption of sulfonamide antibiotics onto iron‑modifed clay: linear and nonlinear isotherms, kinetics, thermodynamics, and mechanistic studies
(Springer, 2018)Iron-modifed raw kaolinite clay (Fe-MC) was synthesized by co-precipitation method, characterized, and then applied as a low-cost adsorbent to sequester sulfachloropyridazine (SCP) and sulfadimethoxine (SDM), emergent ... -
Single and competitive removal of sulfachloropyridazine and sulfadimethoxine onto natural kaolinite clay: kinetics, isotherms and thermodynamics studies
(2017)In this study, local untreated clay was tested for its ability to adsorb sulfonamides, namely, sulfachloropyridazine (SCP) and sulfadimethoxine (SDM) from synthetic wastewater by batch equilibration. The time-dependent ... -
Sodium X-type faujasite zeolite decomposition of dimethyl methylphosphonate (DMMP) to methylphosphonate: Nucleophilic zeolite reactions I
(Elsevier, 2006-06-20)Dimethyl methylphosphonate (DMMP), used extensively as a nerve agent simulant, strongly adsorbs in X-type faujasite zeolite and undergoes nucleophilic substitution by the supercage oxygens. Solid state magic angle spinning ... -
Soil fertility dynamics in Bambara groundnuts (Vigna Subterranea) and Nerica rice (Oryza Sativa) intercrop system in small holder farms in Western Kenya.
(Dynamic Network for Research Works, 2014)Agricultural production in Kenya has stagnated since 1980s resulting in malnutrition in over 89% of Kenya’s population. Food insecurity has been identified as the prime cause of malnutrition. Low agricultural productivity ... -
Soil Microbial Biomass, Microbial Population and Diversity in MaizeBanana Based Agroforestry System in Kisii County, Kenya
(2023-08-04)Soil microbes are involved in many important ecosystem processes including nutrient acquisition, biogeochemical cycling and soil aggregation. Soil microbial diversity affects the soil belowground dynamics and fate of ... -
Soil properties along a gradient from hillslopes to the savanna plains in the Lambwe Valley, Kenya
(Elsevier, 2015-12-01)Changes in land use and management strongly affect the physical and chemical properties of soils and their ecological functions. Especially, regions in East Africa have experienced dramatic land use changes in the past, ... -
Solutions of second-order partial differential equations in two independent variables using method of characteristics
(nternational Journal of Engineering and Mathematical Sciences, 2013-06-01)In this paper we have classified second order linear PDEs into three types, hyperbolic, parabolic and elliptic. Hyperbolic equations have two distinct families of (real) characteristic curves, parabolic equations have a ... -
Some members of genus Cassia (Senna): Their Ethnobotany, Potency and Prospects of Drug discovery
(mansapublishers, 2023-04-04)Plants from Cassia species have been used traditionally all over the world in the treatment of various diseases. Various compounds with diverse bioactivities have been isolated from the Cassia species. However, this has ... -
Some new features of photon statistics in a fully quantized parametric amplification process
(Scientific Research Publishing, 2014)An exact quantum treatment reveals that signal and idler photon number operators are not wellbehaved dynamical operators for studying photon statistics in parametric amplification/downconversion processes. Contrary to ... -
Some Pathogenic Bacteria Associated With Fresh and Smoked Nile Perch (Lates Niloticus) In Luanda Market, Vihiga County (Kenya).
(2017-07)Luanda market is located in Luanda town, Kenya. It lies 0° 0' 0" N and 34° 35' 0" E. While the Nile perch (Lates niloticus) a fresh water fish species introduced in Lake Victoria from the family latidae, order perciforme ... -
Some pathological changes in Nile Tilapia and Nile Perch from Lake Victoria.
(University of Nairobi, Kenya, 2010)Gross and microscopic lesions especially those associated with pollutants were investigated in Nile tilapia (Oreochromis niloticus) and Nile perch (Lates niloticus) from Lake Victoria. A total of 104 live fish were bought ... -
Sorghum and Salinity II. Gas Exchange and Chlorophyll Fluorescence of Sorghum under Salt Stress
(Wiley.com, 2004)Photosynthetic activity decreases when plants are grown under saline conditions leading to reduced growth and productivity. Leaf growth, gas exchange, and chlorophyll fluorescence of two sorghum [Sorghum bicolor (L.) Moench] ... -
Sorghum and salinity: I. Response of growth, water relations, and ion accumulation to NaCl salinity
(Crop Science Society of America, 2004)Crops grown in salt affected soils may suffer from drought stress, ion toxicity, and mineral deficiency leading to reduced growth and productivity. The present study was conducted to determine how salinity affects growth, ... -
Sorghum and salinity: II. Gas exchange and chlorophyll fluorescence of sorghum under salt stress
(Crop Science Society of America, 2004-03)Photosynthetic activity decreases when plants are grown under saline conditions leading to reduced growth and productivity. Leaf growth, gas exchange, and chlorophyll fluorescence of two sorghum [Sorghum bicolor (L.) Moench] ... -
Source Attribution of Salmonella and Escherichia coli Contaminating Lake Victoria fish in Kenya
(RESEARCH GATE, 2018)Escherichia coli and Salmonella are major contaminants of fish from Lake Victoria but the sources and possible reservoirs of these microbes have not been determined. Fish and environmental samples were collected from five ... -
Sources, distribution, and risk assessment of organochlorine pesticides in Nairobi City, Kenya
(Elsevier, 2020-01-10)The distribution and sources of organochlorine pesticides (OCPs) in air and surface waters were monitored in Nairobi City using triolein-filled semipermeable membrane devices (SPMDs). The SPMDs were extracted by dialysis ... -
Sources, distribution, and risk assessment of organochlorine pesticides in Nairobi City, Kenya. Journal of Environmental Sciences, 96, 178–185
(Elsevier, 2020)The distribution and sources of organochlorine pesticides (OCPs) in air and surface waters were monitored in Nairobi City using triolein-filled semipermeable membrane devices (SPMDs). The SPMDs were extracted by dialysis ...