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Search Results: 1 - 10 of 512221 matches for " I.A.; "
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Geochemical Exploration for Gold and the Association of As-Cu-Pb-Sn-Zn-Li in the Upper Proterozoic Granitoids of the Wadi Rumman Area, Southwest Jordan  [PDF]
I.A.A. Bany Yaseen
International Journal of Geosciences (IJG) , 2015, DOI: 10.4236/ijg.2015.610089
Abstract: The geochemical studies were conducted in an area covering about 15 km2of the south side of the Wadi Rumman area, SW Jordan. The study area included a part of a basement of complex exposed rocks in southwestern Jordan. The complexes comprised igneous and metamorphic suites, mostly from the late Proterozoic age. A systematic geochemical sampling was conducted using rock and heavy mineral-panned concentrate of geochemical samples. Fifty rock samples were collected from the granitic rocks, simple pegmatite dyke, quartz veins and alteration zone, which covered the area. Next, 45 heavy mineral-panned concentrate samples were collected from the alluvium in the stream sediment within the catchment area, and the dray was sieved to less than 1 mm grain size. The geochemical samples were analyzed for their trace elements and gold by using Ione Conductive Coupled Plasma Emission Spectroscopy (ICP-AES) and the Atomic Absorption Spectrometer (AAS) at Natural Resources Authority (NRA) Labs. The results of the geochemical analysis indicated the presence of gold and heavy minerals in the study area, a result considered abnormal in the rock samples. A strong positive correlation was recorded of Au with As, Cu and W (r =0.82, 0.7 and 1.0), as with Mo (r = 0.83), Cu with Pb (r = 0.83), Sn with Mo (r = 0.73), Mo with W (r = 0.97), Zn with W (r = 0.71), and Li with Bi (r = 0.7). These correlations revealed gold associated within the hydrothermal alteration, quartz veins and pegmatite dyke. Abnormal metals such as As and Bi were good path-finders to find Au. The HM samples showed low positive linear correlations among the concentrations of Au with As, Zn and Li, and negative linear correlations of Au with Pb, Sn, Bi and W. The combination of both rock and heavy mineral concentrate samples shows four geochemical anomalous areas of gold and heavy minerals. The geochemical signatures of Au and As in the Wadi Rumman appear to be in the hydrothermal alteration, quartz veins and pegmatite dyke, respectively. Heavy mineral concentration sampling delineated the Au geochemical anomaly in area 1 specificities with the rock geochemical anomaly of area 1.
Note on Laguerre Transform in two Variables  [PDF]
Ajay Shukla, I.A. Salehbhai
Advances in Pure Mathematics (APM) , 2011, DOI: 10.4236/apm.2011.14035
Abstract: An attempt is made to investigate the some new properties of Laguerre transform in two variables [1].
Cytokines in innate and acquired immunity to Trypanosoma cruzi infection
Abrahamsohn, I.A.;
Brazilian Journal of Medical and Biological Research , 1998, DOI: 10.1590/S0100-879X1998000100015
Abstract: resistance to trypanosoma cruzi infections is critically dependent on cytokine-mediated activation of cell-mediated immune effector mechanisms. this review focuses on the role of il-10, tnf-a, ifn-g and il-12 in controlling t. cruzi replication by the innate and specific immune systems of the vertebrate host. a study performed on mice with disrupted recombinase-activating genes (rag/ko), which lack t and b lymphocytes, revealed the importance of il-12, ifn-g and tnf-a in the resistance against t. cruzi mediated by the innate immune system. in addition, data from experiments using il-10 ko, rag/ko and double rag/il-10 ko mice indicating an in vivo regulatory role of il-10 in innate and t. cruzi-specific immunity are discussed
Detection of Caprine Arthritis Encephalitis Virus Gag-Gene by RT-PCR from Experimentally Infected Goat Brain Cells
I.A. Adebayo
Research Journal of Biological Sciences , 2012,
Abstract: Different brain cell types obtained from goat cerebrum explant cultures were prepared from newborn goat kids and infected by direct Caprine Arthritis Encephalitis (CAE) virus application. Predominantly, cells of the monocyte-macrophage lineage were specifically infected by the virus as proviral DNA was detected in infected cultures by amplification of a 414 base-pair (bp) fragment of the viral gag-gene by Reverse Transcription-Polymerase Chain Reaction (RT-PCR) technique. The present study revealed that microglia are the target brain cells infected by the CAE virus. This finding will undoubtedly help in devising some immuno-prophylactic measures to be adopted in the management of neurological dysfunctions resulting from retroviral infections of man (HIV) and animals.
Dynamical Behavior of Euler-Bernoulli Beam Traversed by Uniform Partially Distributed Moving Masses
I.A. Adetunde
Research Journal of Applied Sciences , 2012,
Abstract: This study is concerned with dynamical behavior of Euler Bernoulli beam traversed by uniform partially distributed moving masses. The governing partial differential equation was systematically analyzed and the analytical numerical solution for classical boundary condition obtained. The deflection of the Euler- Bernoulli beam is calculated under various specified conditions and the results displayed graphically. It is found that moving force solution is not an upper bound for an accurate solution of the moving mass problem.
New Performance of Square Numbers II
I.A. Adetunde
Research Journal of Applied Sciences , 2012,
Abstract: In the recent study, the new discovery of squaring number was performed. This study is an extension of the study in performing square of numbers be it positive integers or negative integers.
New Performance of Square Numbers III Skipper and Staircase Method
I.A. Adetunde
Research Journal of Applied Sciences , 2012,
Abstract: This study considered the square of numbers by Skipper and Staircase method. In the previous research new performance of square of numbers we provoke and illustrate how the number(s) can be squared. As a consequence of the new method called Skipper and Staircase was introduced in the present research.
The Mathematical Models of the Dynamical Behaviour of Tuberculosis Disease in the Upper East Region of the Northern Part of Ghana: A Case Study of Bawku
I.A. Adetunde
Research Journal of Applied Sciences , 2012,
Abstract: This study considers a Mathematical model of the dynamical behaviour of Tuberculosis disease in the Upper East region of the Northern part of Ghana. The equilibrium points of the model system are found and their stability is investigated. The model exhibits two equilibria namely, the disease-free and the endemic equilibrium. Using stability theory and computer simulation, it is observed that population determine the infection rate of tuberculosis hence the higher the population density, the greater the risk of instability of the disease free equilibrium.
Dynamical Behaviour of Viscously Damped Rayleigh Beam Traversed by Uniform Partially Distributed Moving Masses
I.A. Adetunde
Research Journal of Applied Sciences , 2012,
Abstract: An investigation into the dynamic behaviour of Viscously damped Rayleigh beam traversed by a uniform spatially distributed moving masses is carried out. The beam is assumed to be prismatic while the effects of two kinds of pressure are considered, that is the moving load and moving force. The pertinent governing partial differential equations, the boundary and initial conditions were analyzed by a series solution in terms of the normalized deflection curve of the beam and the unknown functions of time. This resulted into a set of coupled ordinary differential equations which are numerically solved by the finite difference scheme with the aid of a Visual Basic 6.0 programme. It was observed that the response amplitude of a Rayleigh beam due to moving mass increased as mass and length of the load increased, whilst the amplitude was found to reduce with increasing time. It was further observed that the response amplitude due to moving force was greater than the response amplitude due to moving mass.
The Epidemiology of Guinea Worm Infection in Tamale District, in the Northern Region of Ghana
I.A. Adetunde
Journal of Modern Mathematics and Statistics , 2012,
Abstract: A study was conducted in seven communities in Tamale to investigate the current pattern of prevalence and intensity of Dracunculiasis (Guinea worm) disease in the northern region of Ghana. The data were obtained from the Parasitic Disease Research Centre (PDRC). The main centre that is responsible for the collection of the monthly data on guinea worm infection. SAS was used to analysis the data and PROC AUTOREG was employed for fitting the model. It was observed that the number of guinea worm infection cases reduces with respect to time, indicating that what Diseases Control and Prevention (CDC) are saying will be accomplished that is the guinea worm disease will be completely eradicated.
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