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Search Results: 1 - 10 of 717142 matches for " M.A. Hamid "
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Histopathological Effects of Varied Fluoride Concentration on Cerebrum in Albino Rats
Sajad Hamid,Zaffar Kawoosa,Shahnawaz Hamid,M.A. Mir
Journal of Interdisciplinary Histopathology , 2012, DOI: 10.5455/jihp.20121105123701
Abstract: Fluorides have been a cause of concern for scientists and environmentalists for the long because of their harmful effects on the human and animal life but the problem was highlighted during the twentieth century because of great increase in the human population and industrialization. Since fluorides accumulate in calcified and hard tissues of the body such as bone and teeth and can be detected easily in these tissues, so most of the previous studies focused on the effects of fluorides on these tissues. However, during the past decade researchers all over the world have felt that there is a need to study the effects of fluorides on various other tissues of the body including CNS as fluoride intake for prolonged period is known to cause abnormal behavioural pattern, grave implications for Alzheimer’s Disease, Dementia, Attention deficit disorder and reduced I.Q in children as the fluorides are known to cross blood brain barrier. Hence the present study has thrown light on the involvement of brain in chronic fluoride toxicity. The target organ of studied was cerebrum. In the Study, albino rats were exposed to 30 or 100 ppm fluoride (asNaF) in drinking water for 3 months. Rats exposed to 30 ppm fluoride did not show any notable alterations in brain histology, whereas rats exposed to 100 ppm fluoride showed significant neurodegenerative changes in lhe motor cortex.Changes included decrease in size and number of neurons in all the regions, signs of chromatolysis and gliosis in the motor cortex. These histological changes suggest a toxic effect of high-fluoride intake & on chronic use. [J Interdiscipl Histopathol 2012; 1(1.000): 30-34]
Soil Water Management and Conservation Practices Towards a New Cropping Pattern in Drought Prone Areas of Bangladesh
A.A. Hassan,N.N. Karim,M.A. Hamid,M.A. Salam
Journal of Agronomy , 2003,
Abstract: Experiment was conducted to increase cropping intensity through soil water management and conservation practices. Transplanted rainfed aman rice is grown in Cropping patterns studied during 2000-01 were rice-legume-legume and rice-fallow-fallow, using early maturing drought tolerant crop varieties and local rice. Tillage treatments were imposed during land preparation. Mulch treatments were also imposed in legume rotations. Newly introduced varieties, BRRIdhan 33 and BINAdhan 4, were earlier by 25 and 15 days, respectively, compared with the local rice Sarna. The early harvest of rice varieties left enough residual moisture due to tillage amendments and mulch applications. The available profile soil moisture left was able to meet up about two-third of the water requirement of chickpea (cv. BINAsola2 and Hyprosola). Pre-sowing irrigation, tillage, mulch practices and little rain contributed to successful production of mungbean cv. BINAmoog 2 after chickpea. A reasonable yield of all the crops was obtained compared with the national average yield. The introduction of chickpea and mungbean in the cropping pattern resulted the cropping intensity from 100 to 300%. The altered cropping pattern (rice-legume-legume) evaluated with the existing one (rice-fallow-fallow) resulted the net return of t 37144.00 to t 55406.00 with BCR value of 1.94-2.40. The achievement of a new cropping pattern was only possible due to introduction of early drought tolerant crop varieties, soil water management and conservation practices.
Effect of Method of Sowing and Seed Rate on the Growth and Yield of Soybean
M.A. Hamid,M.Z. Islam,M. Biswas,A.A. Begum
Pakistan Journal of Biological Sciences , 2002,
Abstract: The growth and yield of soybean was determined using two factors viz., methods of sowing (line sowing and broadcasting) and seed rates (40, 60 80 and 100 kg ha -1). Results revealed that leaf area index (LAI) and shoot dry matter weight were higher in line sowing than broadcasting throughout the entire course of development. Significantly highest number of plant population/plot, branches/plant, filled pods/plant, seed and stover yield were obtained in line sowing method. Seed rate significantly influenced all the studied characters except 100-seeds weight. It was observed that LAI, shoot dry matter weight, plant population/plot, plant height, number of unfilled pods/plant and seed yield increased with increased seed rate while number of branches/plant, filled pods/plant and seeds/plant decreased with increased seed rate. Interaction between line sowing and 100 kg seeds/ha gave the highest seed yield (2.76 t ha -1) which was statistically similar to line sowing and 80 kg seeds/ha (2.67 t ha -1).
Photosynthetic Gas Exchange Characteristics, Leaf Area and Dry Matter Accumulation of Two Blackgram Cultivars
D.K. Biswas,M.M. Haque,A. Hamid,M.A. Rahman
Journal of Biological Sciences , 2001,
Abstract: A pot experiment was conducted to evaluate the gas exchange, leaf area dynamics and dry matter accumulation of blackgram varieties namely BARI mash 3 and BINA mash 1. The two blackgram varieties did not differ statistically in gas exchange characteristics, leaf area and dry matter accumulation over the growth stages. Blackgram showed highest photosynthesis rate at flowering stage, might be attributed due to higher leaf chlorophyll, higher stomatal and mesophyll conductance and lower intercellular CO2 concentration, but the highest respiration rate was found at pod filling stage. Leaves of top canopy showed highest gas exchange characteristics followed by the leaves of middle canopy and then bottom canopy. Diurnally, photosynthesis increased gradually with increasing intensity of light and peaked at around noon then decreases. Photosynthesis showed strong correlation with leaf area and dry matter accumulation of blackgram.
Coagulase Gene Polymorphism of Staphylococcus Aureus Strains Isolated from Human, Animals and Environment
M.E. Wisal,M.A. Hamid,E.A. Hadia,I.M. El Jalii
Pakistan Journal of Biological Sciences , 2005,
Abstract: A total of 29 Staphylococcus aureus strains isolated from human, animals and their environment were subjected to genotypic analysis on the basis of coagulase gene polymorphism. The coagulase gene was amplified using a pair of oligonucleotide nested primers. Presumptive phenotypic identification of the strains showed production of free and bound coagulases, production of acetion, anaerobic utilization of mannitol with acid production. PCR-amplified coagulase genes of S. aureus revealed different pattern in base pair lengths and number of amplified bands. There were no obvious specific PCR pattern for all types of isolates thus, genotypic clustering correlated to human, animal and environmental isolates was not passable. Given the specificity of the coagulase gene, the isolates were thus confirmed to be belong to the coagulase positive S. aurueus. Out of 29 PCR-amplification isolates, 21 produced a single band while 8 isolates produced two bands. The length of the amplicon ranged from 430 to 1000 bp. Amplicons of the 21 isolates were thus categorized as 670, 930, 950 and 1000 bp. In conclusion, Amplification of coagulase gene is useful in confirmation of coagulase gene positive S. aurueus.
Skin Thickness in Relation to Milk Production of Crossbred Cows
M.A. Hamid,S.M.I. Husain,M.K.I. Khan,M.N. Islam
Pakistan Journal of Biological Sciences , 2000,
Abstract: The study was conduted Bangladesh Agricultural University Dairy Farm, Mymensingh to find out the skin thickness in different regions of body of daily cows and the relationship of skin thickness to milk yield. Twenty-five crossbred milking cows of indigenous and Sahiwal were selected for experiment. The skin thickness was measured by Vernier calipers. The skin thickness of the same animals is varies at different regions of the body. The average skin thickness of neck, dewlap, chest, abdomen and hindquarter were 3.33, 4.12, 2.93, 4.23 and 4.20 mm, respectively and the average skin thickness was 4.20 ± 0.90 mm at the five different regions and the milk yield were negative and was significant (P< 0.05). The results of the presents study indicated that 29% of the variation in milk yield of cows depend on skin thickness and 71% depends on another factors. From the study it was found that milk production of low skin thickness group was higher then that of medium and high skin thickness group. This may be a fact that low skin thickness did not deposited extra fat in their body and utilized most of her energy for milk production.
Innovative Integrated Wet Process for Virgin Coconut Oil Production
M.A. Hamid,M.R. Sarmidi,T.H. Mokhtar,W.R.W. Sulaiman
Journal of Applied Sciences , 2011,
Abstract: During the recent years, increased interest on the development of the Virgin Coconut Oil (VCO) has been observed. This is to maximize the benefit of the multifunctional traditionally used coconut. VCO is rich in the Medium Chain Fatty Acids (MCFAs) that have been shown to speed up the metabolism. Almost 50% of the fatty acid in virgin coconut oil is in form of lauric acid. This fatty acid has wide application as wide spectrum of antimicrobial substances against fungi, bacteria and viruses. Moreover, the fatty acid profile of coconut oil shares the similar characteristic with breast milk. The MCFAs in coconut oil are not stored in the body cells but rather processed directly in the liver where they are converted immediately into energy. The present study describes the process for VCO production through integrated wet process. The novel features of this process is the production of virgin coconut oil itself which can minimize the time, cost, energy and man power as well as can maximize the yield and improve the quality of coconut oil. The VCO obtained by this process contribute about 30-40% wt/wt of yield which is 10-20% higher than conventional method. The physical characteristics of VCO along this process shows that the VCO is colorless, retain fresh coconut aroma and sweet coconut taste with the highest content of lauric acid (49.85%). Besides that, the result also indicates the presence of vitamin E VCO. In general, the overall results for sensory analysis were acceptable in terms of aroma and taste of the product.
Measurement of Different Types of Potato Chips by Inductively Coupled Plasma-Optical Emission Spectrometer  [PDF]
AL-rajhi, M.A.
Journal of Analytical Sciences, Methods and Instrumentation (JASMI) , 2014, DOI: 10.4236/jasmi.2014.42007
Abstract:

Potato chips are considered as one of the most popular and preferable children’s foods in Saudi Arabia. The aim of this study was to examine the concentration of 12 chemical elements (i.e. Cd, Cr, Cu, Fe, Mg, Mn, Ni, Pb, Zn, As, Se and Al) in different types of potato chips. Samples were analyzed using an Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES). The average concentrations of analyzed elements in all potato chips were examined and compared with the recommendations of international organizations concerned with food safety. From the human health point of view, this investigation showed that there was no possible health risk to consumers due to the intake of potato chips.

A Comparative Study on the Virulence of Pasteurella multocida Local Sudanese Vaccine Strains
M.A.A. Sarah,N.T. Mekki,M.O. Elhaj,M.O. Halima,M.M. Omer,M.E. Hamid,M.A. Abbas
Veterinary Research , 2012,
Abstract: The purpose of this study, was to compare the virulence between the two local Sudanese strains of Pasteurella multocida B and E. The virulence experiment has been conducted in calves and rabbits. The calves and rabbits were divided into three groups; group (I) was infected with strain B, group (II) was infected with strain E and group (III) was determined as control. The finding of this study, showed that P. multocida local Sudanese vaccine strain B is more virulent than strain E.
Levels of C-reactive protein in serum samples from healthy children and adults in S?o Paulo, Brazil
Ribeiro, M.A.;
Brazilian Journal of Medical and Biological Research , 1997, DOI: 10.1590/S0100-879X1997000900002
Abstract: c-reactive protein (crp) was measured by elisa in the sera of 165 healthy blood donors and 125 normal children 1 to 14 years old. the serum levels of blood donors ranged from 0.05 to 57.6 mg/l with median and mean values of 1.8 mg/l and 4.86 mg/l, respectively. crp levels ranged from 0.02 to 14.4 mg/l in the children's sera, the median being 0.45 mg/l and the mean 1.65 mg/l. no individual lacking crp was detected. the high crp levels observed in the present study suggest that the population of the state of s?o paulo may usually be exposed to subacute infections and/or inflammation without presenting clinical symptoms
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