Natural & Applied Sciences

Research Papers/Topics in Natural & Applied Sciences

Distribution Of Heavy Metals In Cocoa Farm Soils In The Western Region Of Ghana

Western Region is the largest cocoa producer in Ghana. Cocoa farmlands have over the past decades received heavy doses of agrochemical application to boost cocoa production. These agrochemicals, however, may contain heavy metals and it is therefore likely that the metals may have accumulated in the soils. Evaluating the total concentrations and understanding the distribution characteristics of heavy metals in cocoa growing soils can aid environmental managers and even...

Variations In Body Composition Among Adult Males With Different Lifestyles

Knowledge about body composition is essential when one considers nutritional status, body weight, and health. Excess body fat is associated with chronic diseases such as diabetes mellitus, coronary heart diseases and strokes, while underweight or under-nutrition in adults can result in reduced work capacity and affect productivity. Both conditions exist in developing countries. Research on body composition is widespread in developed countries. Literature is, however, ...

A Study Of Post Stroke Urinary Tract Infection At The Korle-bu Teaching Hospital

BACKGROUNDInfections are known to be a major complication of stroke patients. The relationship between stroke and bacteriuria has rarely been studied in sub Saharan Africa, though this information could be relevant in the management of stroke in the sub-region.AIM The aim of the study was to investigate the epidemiology of post stroke bacteriuria at the Korle-Bu Teaching Hospital including the prevalence, incidence, risk factors and causative organisms.METHODS This was...

Biochemical Characterization Of Antimicrobial Sensitivities Of Mycobacteria Causing Pulmonary Tuberculosis In Hiv And Non-hiv Positive Patients

The purpose of this study was to find out the species of mycobacteria causing pulmonary tuberculosis in HIV and non-HIV seropositive patients in Accra, Ghana, and to determine the drug susceptibility patterns in the two groups of patients. From November 2002 to March 2003, new patients attending the Chest Clinic of the Korle-Bu Teaching Hospital and diagnosed with tuberculosis by sputum smear microscopy were enrolled. Patient sputum was cultured and drug susceptibilit...

Gold Nanoparticles For Medicine

ABSTRACT Gold nanoparticles were synthesized by reducing aqueous chloroauric acid (HAuCl4) with three different bacteria. Various microorganisms were verified to see how feasible they will be in synthesizing gold nanoparticles. Three microorganisms were screened and found to produce gold nanoparticles effectively. These bacteria include; Bacillus megaterium, Bacillus subtilis and serratia mercensis mercensis. Microorganisms in the synthesis of nanoparticles appear as an environmentally ...

Quality Control Programme On Mammography Systems In The Republic Of Benin: Assessment Of Patients Dose Optimisation In Three Selected Facilities

ABSTRACT The Mean Glandular Dose (MGD) was estimated first using Polymethylmethacrylate (PMMA) slabs and secondly MGD was estimated per right craniocaudal (RCC) projection view and left craniocaudal (LCC) projection view. A number of 21 patients out of a total of 28 patients, undergoing breast examination in three (3) selected mammography facilities in the Republic of Benin were involved. Image quality was evaluated based on subjective analysis of images with Leeds Tests Objects...

Semigroups Of Linear Operators And Application To Differential Equations

This work concerns one of the most important tools to solve well-posed problems in the theory of evolution equations (e.g diusion equation, wave equations, ...) and in the theory of stochastic process, namely the semigroups of linear operators with application to dierential equations.

Industrial Pollution In Ghana: Some Selected Case Studies Of Industries In Tema

Abstract Waste waters from eight selected industries namely Tema Oil Refinery, Tuyee Manufacturing Industries, Cocoa Processing Company, Tema Lube Oil Company Limited, Pioneer Food Cannery Limited, Bridaltrust Paints Company Limited, Ghana Textiles Manufacturing Company and Ghana Textiles Printing Company Limited were sampled and subjected to various physico-chemical and trace metal analysis to determine levels of pollutants, using standard methods of WHO, AO AC and APHA. Generally...

Effects Of Stretching On Flexible Organic Electronic Structures

ABSTRACT This work presents the responses of optical properties and mechanical failure of layers of stretchable organic electronic structures under tension using analytical, simulations, and experimental techniques. The interfacial contact around dust particles was modelled. The deformation induced during stretching was also modelled before simulating the stress distributions and calculating the crack driving forces of the layers using finite element analysis. The finite element simul...

A Hybridized Recommendation System On Movie Data Using Content-Based And Collaborative Filtering

ABSTRACT In recent times, the rate of growth in information available on the internet has resulted in large amounts of data and an increase in online users. The Recommendation System has been employed to empower users to make informed and accurate decisions from the vast abundance of information. In this Research, we propose a hybrid recommender engine which combines Content-Based and Collaborative filtering recommendations. This seeks to explore how prediction accuracy can be enhanced ...

Effect Of Disorder On Spin Transport In Topological Non-Trivial Magnetic Textures

ABSTRACTAn effect that is observed when an electron passes through a non-collinear magnetic textures such as skyrmion, the electron gets deviated as a result of the fictitious magnetic field generated by the skyrmion giving rise to Topological (spin) Hall effect. our interest is on the effect of disorder (magnetic and non-magnetic) on transport of non-trivial topological textures. In these work we carry out a thorough study of the topological Hall and topological spin Hall effects and tes...

Synthesis, Characterization And Luminescent Properties Of Bipodal And Tripodal Pyrazole And Triazole Lanthanide Coordination Complexes

ABSTRACT Lanthanide complexes have been established as promising agents in their application as catalysts and photo-luminescent materials. Recent research has been geared towards the optical application of these lanthanide complexes, especially as organic light-emitting diodes (OLED) for TV screens, phones and other portable electronic devices. The luminescent ability of these complexes is largely dependent on the choice of ligand environment. We report here for the first time lan...

Semantic Sentiment Analysis Based On Probabilistic Graphical Models And Recurrent Neural Networks

ABSTRACT Sentiment Analysis is the task of classifying documents based on the sentiments expressed in textual form, this can be achieved by using lexical and semantic methods. The purpose of this study is to investigate the use of semantics to perform sentiment analysis based on probabilistic graphical models and recurrent neural networks. In the empirical evaluation, the classification performance of the graphical models was compared with some traditional machine learning classifiers a...

Maternal Serum Human Chorionic Gonadotropin And Magnesium As Biochemical Markers In Predicting Preeclampsia In Pregnant Ghanaian Women.

Preeclampsia is a multisystem disease of pregnancy of unknown cause. It is a maternal syndrome, which is characterized by increased blood pressure, edema, proteinuria or significant amount of protein in the urine of pregnant women and abnormal clotting, liver and renal functions all of which may be due to the release of placental toxic factors into the mother’s circulation. The only effective therapy to this complication is to facilitate the culteinment of the pregn...

A Modified Subgradient Extragradeint Method For Variational Inequality Problems And Fixed Point Problems In Real Banach Spaces

ABSTRACTLet E be a 2-uniformly convex and uniformly smooth real Banach space with dual space E ∗ . Let A : C → E ∗ be a monotone and Lipschitz continuous mapping and U : C → C be relatively nonexpansive. An algorithm for approximating the common elements of the set of fixed points of a relatively nonexpansive map U and the set of solutions of a variational inequality problem for the monotone and Lipschitz continuous map A in E is constructed and proved to converge strongly.


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