ABSTRACT The use of High Intensity Focused Ultrasound (HIFU) in the medical treatment of cancer has attracted scientists and engineers with interest in achieving the most financially affordable but yet curative methods of curing different types of cancers. This present work considers a 2D modeling of the prostate gland without the environmental (neighbouring) tissues such as bladder, rectum, urethra and seminal vesicle. This model uses the nonlinear Westervelt equation since the propagation i...
ABSTRACT Combination-control of two or more systems which may have important application in Josephson junction ratchet array, and other physical systems has not been explored. Most of the theoretical framework is on combination synchronization, and the need for combination tracking control. In this paper tracking control of 2-D Duffing oscillator, 3-D Lorenz-Stenflo, 4-D Lorenz-Stenflo systems, as well as combination-tracking control of two, three, four and five systems evolving from differe...
ABSTRACT Active polar gels are a type of viscoelastic soft material formed by polar filaments which are constantly driven out of equilibrium by the consumption of chemical fuel such as ATP. Following the approach of Voituriez et al, a generic hydrodynamic theory relying on symmetry arguments only was used to study the effects of quasi one-dimensional confinement on active polar gels. The phenomenological theory based on liquid crystal hydrodynamics is motivated by the dynamics of actin filame...
ABSTRACT Undoubtedly, human trafficking, endangers human rights and the security of the individual human being as well as global security at large. The main objective of the study was to assess the stakeholder institutions in controlling human trafficking in the Eastern Region of Ghana. Multistage sampling approach which includes cluster, stratified and purposive sampling methods were used to select a total sample size of 100 respondents for the study. Since the problem under investigation is...
ABSTRACT Wave velocities in sand stones are greatly influenced by porosity and clay contents.
ABSTRACT Background: Malaria co-infection with schistosomiasis is known to modulate the immune response and thereby to potentially alter the pathophysiological and immunological profile of the diseases.
ABSTRACT The reactions of 2-chloro-5-nitro pyridine with piperidine have been studied in acetone and in methanol In acetone, the rate constants are measured as a function of the amine concentration.
ABSTRACT River sediments are known to contain natural radionuclides, the concentrations of which if beyond certain limits can cause adverse health effects. The sediments from Ogun river provide large quantities of sand for construction purposes in Nigeria. Despite this, data are scarce on the natural radionuclides: 40K, 226Ra and 232Th distribution in the river sediments. This work was aimed at determining the spatial distribution of these natural radionuclides and their concentrations in th...
ABSTRACT The Boltzmann kinetic equation was used to investigate and derived theoretically the current density characteristics of carbon nanotubes exposed simultaneously to both constant (dc) and high-frequency (ac) electromagnetic fields. Generation and amplification of terahertz radiation at room temperature was predicted. We demonstrated that this can suppress electric current instabilities while still preserving a broadband THz gain. We have further shown that THz gain in the conditions of...
ABSTRACT The study analyzed imports revenue contributions from six high-risk commodities obtained from the Inspection and Control Services Company at Tema port. The six items were Auto-parts, Rice, Computers and Accessories, Household Electricals, Poultry Products and Used Clothing. The data covered five years from 2004 to 2008. The objective was to obtain revenue estimates of these six items. Another objective was to provide forecasts of yearly total revenue based on the five years revenue d...
INTRODUCTION B—Diketones participate in tautomeric equilibria where an apparently pure compound is actually a mixture 'of two or three substances having keto and enol structures
INTRODUCTION B-Diketones participate in tautomeric equilibria where an apparently pure compound is actually a mixture 'of two or three substances having keto and enol structures.
ABSTRACT Merozoite surface protein-119 (MSP-119) specific antibodies which include processing inhibitory, blocking and neutral antibodies have been identified in individuals exposed to Plasmodium falciparum. Here we intend to look at the effect of single andmultiple amino acid substitutions ofMSP-119 on the recognition by polyclonal antibodies from children living in Igbo-Ora, Nigeria. This would provide us with information on the possibility of eliciting mainly processing inhibitory antibodi...
ABSTRACT During studies on the epidemiology of malaria at a rural community, Igbo-Ora, Southwest Nigeria, genotyping of Plasmodium falciparum extracted from infective Anopheles gambiae s.l. was undertaken. Circumsporozoite (CSP) ELISA was used on crushes from head-thorax for DNA extraction and PCR amplification for the determination of P. falciparum genotypes on merozoite surface protein-I and 2 (MSP-I & 2). Of the 65 infective anophelines, P. falciparum genotypes were positively identified i...
ABSTRACT Ambient air inhalable particulate matter, Black Carbon (BC) and heavy metal concentration levels in the ambient air derived from combustion at a local palm kernel production site was assessed in this study. The goal of this work was to identify the effect of biomass burning from palm kernel oil production activities on ambient air quality at Akotokyir and its environs and the possible health effects. An IVL sampler and a Sierra Anderson (GAST) pump were used to sample PM10 air partic...