Natural & Applied Sciences

Natural & Applied Sciences Research Papers/Topics

Synthesis And Evaluation Of Piperazine-Carboxamide Derivatives As Potential Antimalarial /Antimycrobialagents

ABSTRACT Malaria and tuberculosis continue to be endemic in Africa and several other regions across the globe. Malaria is caused by a parasite transmitted by the female anopheles’ mosquito. Plasmodium falciparum is responsible for human malaria in most part of Africa and Plasmodium vivax causes malaria in Asia. Tuberculosis on the other hand is caused by Mycobacterium tuberculosis which is propelled when an infected person coughs, sneezes or even talks. Together, these two diseases are resp...

Effective Decontamination And Multiplication Of Croton Membranaceus Müll. Arg. In Vitro

ABSTRACT Croton membranaceus is a herb with useful medicinal properties. The leaves, bark and roots are used for the treatment of diverse ailments. The harvesting of the plant by many traditional medical practioners from the wild for the treatment of diseases in the country without replacement exposes the plant to possible extinction in the near future. The only means of propagating the plant is by use of seeds which is relatively slow. Thus, an alternative mode of propagation is needed to de...

Analysis Of Spatial Differentials Of Income Inequality In Ghana: Application Of Bayesian Estimation

ABSTRACT The prime objective of the study was to introduce the application of a Bayesian method of estimation in the computation of the Gini coefficient. The bootstrap estimation technique was also employed to obtain confidence intervals for the estimated Gini coefficients which were used to statistically analyze the significant change of inter-household income inequality between 2005/06 and 2012/13 in Ghana with emphasis on the sex of head of household. Most of the methods used in calculatin...

Assessment Of The Effect Of Pollen Grains Of Maize F (Zea Mays L.) On Cercospora Arachidicola Hori. And On Infection Of Leaves Of Groundnut (Arachis Hypogea L.) Caused By The Fungus.

ABSTRACT Conidia of Cercospora arachidicola are straw-coloured or olivaceous, subfusiform, multicellular, 28.3-68.1(jm in lengths. They contain 3-7 cells. They germinated in distilled water and at 85-100% R.H. The optimum pH for germination was 5.0-6.0; any cell of the conidium germinating produced only one germ tube. The germ tube commonly comes from the end cells with occasional germ tube emerging from one or two median cells. Pollen of Zea mays, glucose (1.0-8.0%) and peptone (0.1-2.0%) fa...

The Application of Queuing Theory to Customer Service at Selected Branches of The Standard Chartered Bank Ghana Limited

ABSTRACT This thesis investigates the Application of Queuing theory to customer services at selected branches of the Standard Chartered Bank in Accra. The problem investigated was to determine among other things whether the customer service points of the bank functions well without bottlenecks or undue delays. That is this thesis intends to investigate, (a) If the bank current system of operation at the customer service points is satisfactory. (b) If not what changes are required to improve ...

Studies on Survival of Trachysphaera Fructegina Tabor & Bunting Causing Mealy pod Disease of Cocoa Theobroma Cacao L.

ABSTRACT Conidia of T. fructigena did not germinate at any relative humidity from zero to 10C% R.H. Germination in distilled water^was very poor, less than 2.0 per cent at the optimum temperature, 25 C. PDA encouraged 96.8 percentage germination at 25°C. The conidia germinated very poorly on PDA at 35°C and a temperature of 40 C killed the conidia in approximately 1 2 hours. T, Frutiger conidia would only survive in atmospheres of extremely high humidity. Best survival occurred at 10($ R.H...

Occupational Hearing Loss Among Night Club Workers in Accra

ABSTRACT Background: Employees of night clubs are at a greater risk for developing hearing loss because they could be exposed to dangerously high noise levels. Elevated noise levels may lead to adverse effects including elevated blood pressure and sleep interference. Communication in the workplace may also be affected, contributing to the occurrence of accidents. The most serious side effect of noise however is irreversible hearing impairment, and this occurs as a result of damage to the del...

Examination of Human Skin Surfaces For The Detection of Mycobacterium Ulcerans

ABSTRACT Mycobacterium ulcerans, causes Buruli ulcer (BU), a necrotizing skin disease endemic in 33 countries globally. Its environmental reservoir and mode of transmission are unknown. Portaels hypothesized that prior skin contamination followed by penetration through existing skin abrasion or trauma may be a possible route through which M. ulcerans is transmitted to humans. Comparative epidemiological and case control studies have outlined some risk activities associated with BU that could...

Modelling Extreme Temperature Behaviour In Upper East Region, Ghana.

ABSTRACT The impacts of extremely high temperatures on plants, human beings and animals’ health have been studied in several parts of the world. However, extreme events are uncommon and have only attracted attention recently. In this study, extreme temperature behaviour was modelled through the application of extreme value theory using maximum monthly temperatures over a 32 years period. Data on monthly maximum temperature from the Upper East Region were modelled using generalized extreme ...

Some Inequalities For The (Q, K)-Digamma Function

Abstract Some inequalities involving the (q, k)-digamma function are presented. These results are the (q, k)-analogues of some recent results.

The (Q, K)-Analogues Of Some Inequalities Involving The Psi Function

Abstract In this paper, the (q, k)-analogues of some inequalities involving the Psi function are presented. These results generalize some earlier results presented by W. T. Sulaiman. The approach is based on some mononicity properties of some functions involving the ψq,k function.

Genetic and Root Growth Studies in Cassava (Manihot esculenta Crantz): Implications for Breeding

Cassava (Manihot esculenta Crantz) is a perennial tropical crop grown for its starchcontaining tuberous roots. It is cultivated mainly by small-scale farmers and consumed daily by an estimated 500 million people. Cassava mosaic disease (CMD) has long been recognized as a major limiting factor to cassava production in Africa and severe epidemics hit Uganda in the late 1920’s and late 1980’s. In spite of its importance as a major food crop it is the least researched major crop and many ques...

Peak Skin Dose Estimation in Adult Examinations For Selected Multi Detector Computed Tomography: An Approach For Patient Dose Optimization

ABSTRACT Computed Tomography (CT) is a valuable tool among diagnostic imaging modalities. However, the increase in its utilization has resulted to a considerable increase in its contribution to the collective dose from medical exposure. The main aim of this study was to propose a patient dose optimization method from exposure parameters that would estimate the peak skin doses (PSDs) to patients undergoing chest CT and abdomen CT examinations. PSDs were estimated on the surface of a Perspex C...

Body Wasting Among Tuberculosis Patients In Urban Uganda

Background Although body wasting is a cardinal feature of tuberculosis, its etiology and management is poorly understood; and its assessment is overlooked in research and in clinical practice. Objective We established whether body wasting modifies survival and body composition changes during and after tuberculosis treatment; whether HIV modifies dietary intake among tuberculosis patients; whether dietary intake differs by wasting and severity of disease status; and whether dietary intake inf...

Degradation of Cocoyam(XANTHOSOMA SAGITTIFOLIUM L.) by Three Isolates of Sclerotium Rolsfi SACC. And Its Control

ABSTRACT The morphological characteristics of three isolates of Sclerotium rolfsii from Aburi (AB), East Legon (EL) and Legon campus (LC) were studied on PDA at an incubation temperature of 28ºC. Radial growth of mycelia and the production of sclerotia were more pronounced in the East Legon (EL) and Legon campus (LC) isolates. When the red and white cormels of cocoyam (Xanthosoma sagittifolium) were inoculated with the various isolates of Sclerotium rolfsii, the white cormels were more resi...


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