Natural & Applied Sciences

Research Papers/Topics in Natural & Applied Sciences

Design and construction of an automatic Battery charger

                                                         ABSTRACTThis project describes the design and construction of an automatic Battery charger. Automatic Battery chargers are not particularly cheap, but the protection they afford in protecting batteries against overcharging and possible battery damage is highly desirable. However the work carried out through the construction and design of an inexpensive alternative to the commercially available fully Automati...

MICROORGANISMS IN AQUACULTURE DEVELOPMENT

ABSTRACT Microbes found in aquaculture are usually from source water, feeds including augmented live foods. These microbes are found in the gills, intestine, muscles and on the surface of fish, shrimps, crustaceans and other aquatic organisms. Microorganisms in aquaculture play several roles including their use as live food, food supplements, probiotics, in pond aeration and in the purification of aquarium. As food, microbes provide the essential nutrients such as vitamins, enzy...

Herbal treatment of scorpion envenomation: Plant extracts inhibited Opisthacanthus capensis venom phospholipase A2 activity

Abstract: The inhibitory effects of Momordica charantia linn, Isoberlinia doka, Terminalia avicennioides, Tamarindus indica and Crotalaria retusa L aqueous leaves extracts on Opisthacanthus capensis (Black creeping scorpion) venom phospholipase A2 (PLA2 ) activity was investigated. The enzyme from O. capensis venom had a pH and temperature optima of 5 and 60˚C respectively with an activation energy of 5.20 Kcal/mol. Different concentrations (4mg, 6mg and 8mg/ml) of Isoberlinia doka and M...

Effect of Phosphorus fertilizer on growth and yield of cowpea

                         i.            Abstract Four types of soil are found in Liberia. Latosols of low to medium fertility occur in rolling hill and cover about three-fourths of the total land surface. Shallow, coarse lithosols, in the hilly and rugged terrain, cover about one-eighth of the land. Infertile regosols, or sandy soils, are found along the coastal plain...

ACID RAIN; THE NUISANCE OF VEHICULAR EMISSIONS

ABSTRACT Acid rain is a mixture of sulfuric acid and nitric acids depending upon the relatively quantities of oxides of sulfur and Nitrogen emissions. Theses emissions are from the exhaust pipe or smokestacks of our vehicles and others like power stations, generators, appliances and so on. Acidification of water bodies causes large scale negative impact on aquatic organism including fishes; acidification has an indirect effect on humans. It has effect on the ecosystem and causes ...

HEALTH IMPLICATION ASSOCIATED WITH THE USE OF COSMETICS

Abstract Cosmetics are care product applied to the body or face to improve appearance. The concept of beauty and cosmetics is old as mankind and civilization. Assorted beauty and cosmetics product such as skin care product, fragrance, oral hygiene, and nail product, which may contain toxic chemicals that can be harmful to health are used especially by women. The bioaccumulation of this harmful chemicals and metals in the body overtime has been associated with different signs of i...

In Vitro Evaluation of Metal Chelating and Ferric Reducing Potentials of Methanol Extracts of Adasonia digitata Leaf

ABSTRACTAdansonia digitata L. (Malvaceae) is commonly known as baobab tree native to Africa. Baobab is a multi-purpose tree which offers protection and provides food, clothing and medicine as well as raw material for many useful items. This study aims to elucidate the metal chelating and ferric reducing potentials of methanol extracts of Adansonia digitata L. (Malvaceae) leaf using in vitro model. Phytochemical screening was carried out on the extract and it showed that the extract ...

GROUP 7 PATHOGENESIS OF HIV INFECTION

The introduction of combined therapy has been an important breakthrough in the treatment of HIV infection, however for proper eradication, HIV pathogenesis has to be understood. Despite treatment with combinatorial therapies, a functional cure approach would be very effective in suppressing viraemic load in the host to such low levels that the immune system would be able to control the infection without the need for antiretroviral therapy, neither inflicting harm upon the host nor trans...

BEATRICE CHEPCHUMBA V2

Screening of microorganisms in soil

Abrasive wear behaviour of Al-Cu-Mg/palm kernel shell ash particulate composite

This paper presents a systematic approach to develop a wear model of Al-Cu-Mg/Palmkernel shell ash particulate composites (PKSAp) produced by double stir -castingmethod. Four factors, five levels, central composite, rotatable design matrix was usedto optimize the number of experiments. The factors considered were sliding velocity,sliding distance, normal load and mass fraction of PKSA reinforcement in the matrix.Response surface methodology (RSM) was employed to develop the mathematicalmodel....

EFFECTS OF FIRM SPECIFIC FACTORS ON NON-LIFE INSURANCE COMPANIES’ PROFITABILITY IN UGANDA; A CASE STUDY OF UGANDA INSURANCE MARKET

This study investigates the effect of firm-specific factors on the profitability of non-life insurance companies operating in Uganda to be more specific, to examine the relationship between profitability and economic factors, firm size, underwriting factor.  For this purpose, secondary data of 21 non-life insurance companies operating in Uganda from the period 2004–2015 were collected from IRA. The data was analyzed using descriptive statistics, coefficient of determination (R2)...

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To test the effect of Nauclea latifolia fruit on a diabetic rats. This was meant to see if the fruit has the ability to reduce blood sugar level. 

Physicochemicls and microbial quality of local fermented milk

ABSTRACTCulturally, consumption of local fermented skimmed milk (nono/tsala) is common in Northern Nigeria and many other parts of Africa and it is sometimes associated with microbial diseases due to poor hygienic practice. Hence, this study was conducted with the objectives of assessing the microbial quality and some physicochemical parameters, a purposive sampling was used to collect a total of 12 different samples from Dutse local government, Jigawa state. The results obtained showed that ...

DESIGN AND IMPLEMENTATION OF CAR REGSTRATION LICENSE PLATE DETECTION AND RECOGNITION SYSTEM

ABSTRACTPublic vehicle traffic management is becoming harder, as the number of the vehicles on Nigerian roads is increasing. The Federal Road Safety Corps and other law enforcement agencies face real problems dealing with the different kinds of traffic violation, which introduces the need for an automated way to help identifying and controlling these violations.  The Online vehicle recognition system, plays an important role in addressing these issues as its application ranges from par...

PLASMID PROFILING OF MULTIDRUG RESISTANCE CLINICAL ISOLATES OF (Pseudomonas aeruginosa)

ABSTRACT The emergence of multiple antibiotic resistance in bacteria and the indiscriminate use of antibiotics contribute to the dissemination of resistant pathogens in the environment which may cause problems in therapy and is a serious public health issue. This study was conducted to determine the incidence of Pseudomonas aeruginosa in clinical samples and their antibiotics resistant pattern. The organisms were isolated using standard microbiological techniques and the ant...


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