The QSAR model were successfully developed to calculate biological activity of 3, 5 di-substituted Pyrazoline derivatives as anticancer agents against AsPC-1 human pancreatic cell line and U251 human glioblastoma cell line, a good correlation models were obtained with R 2 =74.30% and R 2 =75.92% respectively, compounds (5-(4- bromophenyl)-3-(4-nitrophenyl)-4,5-dihydro-1H-pyrazole) and (N, N-dimethyl-4-[3- (4-nitrophenyl)-4,5-dihydro-1H-pyrazol-5-yl] aniline) were found to be the most�...
ABSTRACT In Kenya use of exotic dairy goats in breeding programmes for smallholder production systems has become popular, but information on the milk production and nutritional quality is scarce. This research project was done to investigate the milk yield and its nutritional composition of Kenya Alpine dairy goat, Capra aegagrus hircus, for value addition. The initial work constituted assessing the dairy goat feeding practices in the study areas of Mukurweini, Kieni East and Kieni West, whe...
The aim of this study was to determine of nitrite ions (NO-2) in some locally produced, processed meats samples. Twenty three samples were obtained from the local markets in Khartoum state. The cured meat samples include Sausages, Martidala, Beef berger, Basterma, Hot dogs and Frankfurters. Nitrite ions were extracted from the samples by hot water. Nitrite content for each sample extract was measured by Uv-Vis spectrophotometry. Three samples showed nil nitrite content. Twenty samples ...
The aim of this research work was to study the potential capability of zeolites and kaolin to remove some, heavy, metals from drilling mud wastewater. Four samples were used, (three zeolites and one kaolin). Two natural zeolites(Stablite and Stellerite) collected from Al Gadaref state (East Sudan), synthesizedzeolite from fly ash using sodium hydroxide under hydrothermal conditions. Kaolin sample collected from Elmerkhiat mountain (North-East Omdurman Sudan). X-ray diffraction (XRD) w...
Abstract During the last decades, cities in sub-saharan Africa have undergone rapid urban growth due to increased population growth and high economic activities. This research explores the impacts of varying modelling settings including spatial extend and its location for the city of Nairobi using a cellular automata (CA) urban growth model (UGM). Our UGM used multi-temporal satellite-based data for classification of urban land-use of 1986, 2000 and 2010, road data, slope data and exclusion ...
The main goal of this study was to determine the effect of cooking and added materials (spices and monosodium glutamate) on the chemical and microbial characteristics of two types of indomie noodles )chicken and vegetable flavoured( . The samples were the products of Sawabash factory (Soba industrial area). The samples were analyzed before and after the cooking at 100o C for 20 minutes. The obtained results of the chemical analysis of vegetable flavoured and chicken flavoured indomie ...
Abstract. The mechanism behind the formation of alloyed ohmic contacts to p-type InP doped in the 1016 cm-3 range has been investigated. Techniques used for - characterising the contacts include the scanning electron microscope (SEM), specific contact resistance measurements, x-ray diffractometry (XRD), energy dispersive x-ray analysis (EDAX) and Auger electron spectroscopy (AES). Both temperature and time of annealing were varied during the study. The results obtained using our annealing pr...
ABSTRACT The Maastrichian-Paleocene sediments in Yuli area me composed of the Gombe Sandstone and the Kerri-Kerri Formation. They cover 400 square kilometres have a thickness of more than 100 metres. Six stratigraphic sections were studied, representing the entire stratigraphic succession of the Gombe Sandstone in the Yuli area, The formation has a thickness of about 30 metres in the studied area. The Gombe Sandstone consists of folded beds of sandstone, siltstone and mudstone. The sandstone ...
ABSTRACT The petroleum hydrocarbon composition of sediments from Qua Iboe River Estuary, Ibeno, South-Eastern Nigeria, was studied to determine the levels of these hydrocarbons in the marine environment. Ten sediment sites were sampled using a van veen Grab sampler. Chemical parameter, such as total organic carbon (TOC), was assessed using Blackey-walkey titration method. Soluble organic matter (SOM) was assessed using sohxlet extraction method and total petroleum hydrocarbon (TPH) was asses...
ABSTRACT The efficacy of silica obtained from our local sand as a carrier in synthesis of Nickel-Silica catalyst was investigated. Six samples of soil were collected from two different sites (comprising five white coloured samples collected from Iva valley, lower part of Milliken hill, namely: pottery 2 (P2), down iva (DI), run-off iva (ROI), pottery rock (POR), white chalk (WTC) and one brown coloured sample (UdS) collected from Udi Siding) in Enugu, Nigeria. Prior to treatment by flotation...
ABSTRACT The synthesis of ten new alkynylated derivatives of angular phenoxazine and alkynylated naphthoquinone was thoroughly investigated. The first intermediate, 6-chloro-5Hbenzo[a]phenoxazin-5-one was obtained by the condensation of 2-aminophenol with 2,3- dichloro-1,4- naphthoquinone in the presence of anhydrous sodium tricarbonate (IV) . Thereafter, the intermediate and 2,3-dichloro-1,4-naphthoquinone were each suggested to Sonogashira cross–coupling reaction under copper-, amine-, a...
High doses of ionizing radiation can lead to adverse health outcomes such as cancer induction in humans. Although the consequences are less evident at very low radiation doses, the associated risks are of societal importance. This study aimed to evaluate entrance skin doses (ESDs) in the periodical DentalX-rayexaminations. The entrance skin dose (ESD) was measured for 200patient in both gender underwent dental X-ray examination at Radiology Department of Khartoum Dental Educational Hos...
The importance of this research comes from made a new material (Emulsion Definition) by used Gum Arabic and Black seed oil. The aim of this Research is Determine The optical properties of (Emulsion Definition) that made by used Gum Arabic Solution and black seed oil Such as (absorbance, transmission, reflection, absorption coefficient, extinction coefficient, refractive index and optical energy band gap) and to compare the result with pure gum Arabic solution result. In this research F...
ABSTRACT The Schiff base ligand, 2-[(E)-[{3--[(2-hydroxybenzylidene)amino]phenyl}imino)methyl]phenol was synthesized by condensing 1,3-diaminobenzene and 2-hydroxybenzaldehyde in absolute ethanol. Its Cr(III) and Cr(VI) complexes were equally synthesized. The ligand was characterized via UV, IR and NMR spectroscopy, whereas the complexes were characterized based on UV and IR spectroscopy and conductivity values. Stoichiometric studies indicated 1:1 metal to ligand ratio for both complexes. C...
The purpose of this research was designed to study theresponsesof hearing or distortion product otooacoustic emissions amplitude(DPI) for normal hearing of Iraqi and Sudanese using Distortion product Otoacoustic Emissions and to study the influence of the age, ear side, gender and racial on theresponsesof hearing for normal hearing of Iraqi and Sudanese subjects and comparison between them. An additional purpose of this study was proposal model Linear and nonlinear Equations to evaluat...