Natural & Applied Sciences

Research Papers/Topics in Natural & Applied Sciences

An Evaluation Of Accommodation Challenges Faced By Seasonal Commercial Workers During Tourism Peak Season In Malindi Town, Kenya

ABSTRACT This study examined accommodation challenges facing seasonal commercial workers during tourism peak season in Malindi Town. Malindi Town is one of the major tourist destinations in Kenya with the tourism peak season starting from July to March each year. The town experiences an increase in population as a result of seasonal commercial workers who visit the area in search of employment and other income generating economic activities such as trade. This exerts pressure on the existing...

Iron Deficiency Anaemia And Its Association With Malaria Infection In Children In Siaya County In Western Kenya

ABSTRACT Iron deficiency anaemia contributes to 50% cases of anaemia and it remains a concern in the public health sector in sub-Saharan Africa and children under five years are at risk. It is associated with poor cognitive development and affects growth of preschool children. The interventions in most of sub-Saharan Africa focus on the improvement of hemoglobin (Hb) levels but it is not clear if Hb and iron levels relate in areas where there are multi-factorial causes of anaemia. The preval...

Effects Of Land Use And Land Cover Changes On The Hydrology Of Weruweru-Kiladeda Sub-Catchment In Pangani River Basin, Tanzania

ABSTRACT Land-use and land-cover changes have negative consequences on watershed management in Pangani River Basin. They increase impervious ground surfaces, decrease infiltration rate and increase runoff rate, hence causing low base flow during the dry seasons. Comparatively, little is known on the driving forces that affect land-use change and their effects on the hydrology of Weruweru-Kiladeda Sub-catchment. This study, was undertaken to achieve four specific objectives, namely i) to deter...

Cycle Indices, Subdegrees And Suborbital Graphs Of PGL (2,q) Acting On The Cosets Of Its Subgroups

ABSTRACT The action of and on the cosets of their subgroups is a very active area in enumerative combinatorics. Most researchers have concentrated on the action of these groups on the cosets of their maximal subgroups. For instance Tchuda computed the subdegrees of the primitive permutation representations of . Kamuti determined the subdegrees of primitive permutation representations of . He also constructed suborbital graphs corresponding to the action of on the cosets of However many prope...

Investigating Numerically The Effect Of Mass And Heat Transfer Of A Nanofluid That Is Micropolar, Passed Though A Porous Medium And Over A Stretching Sheet

ABSTRACT The boundary layer flow, heat and mass transfer in a quiescent nanofluid driven by a continuous stretching sheet is significant in numerous engineering and industrial processes. Nanofluids posses enhanced thermo physical properties which make them more superior than convectional fluids. This study investigates numerically heat and mass transfer of asteady laminar,viscous incompressible electrically conducting micro polar nanofluid past a porous medium and over a sheet that is stretc...

Effect Of Exchange And Absorption Potential In The Distorted Wave Calculation Of Electron Impact Excitation Of Autoionizing State Of Cesium

ABSTRACT Study of electron impact excitation of autoionizing states of alkali metal atom is very important because it can explain the near threshold features observed in the ionization curves of these atoms. Many theoretical methods, for example, R-matrix, close coupling and distorted wave methods have been used for this study. In the distorted wave method no calculations have been performed for electron impact- excitation of cesium atom using complex distortion potential. That is why in thi...

Anti-Obesity, Cognitive Enhancing, Neurobehavioral, Antioxidant Effects And Phytochemical Profile Of Dichloromethane Leaf Extract Of Gnidia Glauca (Fresen)

ABSTRACT Obesity is a chronic metabolic disorder characterized by increased adipose tissue mass due to positive energy balance. The epidemic of obesity is currently on the rise probably due to increasingly sedentary lifestyles combined with easy availability of palatable, high-fat foods. It presents modifiable risk factor for cognitive impairements, anxiety and motor deficits. Globally, its prevalence has shown a startling increase in all age groups and have been associated with increased mo...

Determination Of Levels Of Ochratoxin A In Wheat, Finger Millet And Sorghum Grains And Their Products Retailed In Nairobi County, Kenya

ABSTRACT Cereals are major food commodity used in Kenya and their quality determines their suitability to human and animal health. The presence of mycotoxins in cereals and their products is a serious emerging threat to quality of cereals based foodstuff. The main classes of mycotoxins found in cereals are aflatoxins, ochratoxins, fumonisins, deoxynivarenol and trichothecenes. Though aflatoxins are the most toxic mycotoxins, ochratoxin A (OTA) is a possible carcinogen of class 2B. In this st...

Seroprofile, Risk Factors Of Hepatitis B, C, Syphilis And Disease Stage Among Hiv Patients Attending Engineer Hospital, Nyandarua County, Kenya

ABSTRACT Hepatitis, especially B, C and Syphilis co infections are very common among HIV infected individuals and their manifestation is a growing public health concern. These diseases share similar modes of transmission with HIV. However, at earlier stages these infections are myriads that mirrors one another hence they are easily missed. Due to this particular challenge, the infection prevalence of the cases is not fully known in most areas of the country, with rural settings of Nyandarua ...

Concentration Of Iron In Laterites From Different Localities Of Tunyai Division In Tharaka Nithi County In Kenya Using Magnetic Separation

ABSTRACT Iron is the single element used in industries in larger quantities than all the other metallic elements combined. This is because of the very wide applications of the metal in manufacture of machinery, vehicles, utensils, trains and train rails, ships and bars used in re-enforced concrete. Whereas the element occurs in more than 80 minerals, only a small number is important as a source of iron. However, even these must be concentrated to make them suitable for putting in a blast fur...

Radiometric Assessment Of Natural Radioactivity Levels And Radiation Hazard Indices For Soil Samples In Kericho County, Kenya

ABSTRACT Throughout their lives, human beings are continually exposed to radiation from terrestrial radionuclides particularly 40K, 238U, 232Th and their decay products. The radiation, usually in the form of gamma rays and alpha particles, is largely attributed to building materials for instance rock and concrete mainly used in developed countries and cities around the world, or soil which is principally used in most parts of rural Africa. Radiation exposure from terrestrial sources may be m...

Determinants Of Complementary Feeding Practices And Nutritional Status Of Children 6-23 Months Old In Korogocho Slum, Nairobi County, Kenya

ABSTRACT Scientific evidence on infant and young child feeding practices from developing countries show that progress is possible when effective strategies and sufficient resources are applied. However, significant gaps in complementary feeding continue to undermine child health. There is limited scientific data on complementary feeding practices and its relation to nutritional status of children aged 6-23 months old in Kenya’s urban slums. The study therefore investigated complementary fe...

Determination Of Thiocyanate Among Smokers And Nonsmokers Using Urine As A Biological Indicator And Other Contributing Factors Of Cyanide Exposure

ABSTRACT The low levels of thiocyanate (SCN) normally present in body fluids increase with chronic exposure to cyanide. Cyanide (CN- ) is a fast-acting, potentially deadly chemical which prevents or inhibits cellular respiration and inactivation of cytochrome oxidase killing the cell. Humans are exposed to cyanide from dietary, industrial, environmental and other sources. Tobacco smoking is an important source of cyanide exposure. After absorption, cyanides are readily distributed in the bod...

Structure-Repellence Studies On Synthesized Stereoisomers Of Menthane-Diol And Analogues Against The Rhipicephalus Appendiculatus

ABSTRACT Tick-borne infections of livestock are wide-spread in Africa and present a great constraint to livestock development, particularly in the improvement of local breeds. This problem is compounded by the high susceptibility of foreign breeds of livestock being used to improve livestock productivity in many African countries. Brown Ear tick, Rhipicephalus appendiculatus, is the most economically important of the 40-70 African tick species. This is due to the fact that it is a highly eff...

Overweight Prevalence, Dietary Diversity, Body Size Preference And Physical Activity Among Seropositive Adults Attending Kayole Hospital Nairobi City County, Kenya

ABSTRACT Obesity are on the increase and is a major public health concern globally. Currently, there is a surge in overweight and obesity among the HIV-positive population in Africa. Overweight and obesity are associated with increased rates of chronic diseases globally. However, the identification and understanding of factors associated with overweight and obesity among persons living with HIV (PLHIV) remain uninvestigated in Kenya. This study aimed to determine the prevalence of overweight ...


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