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Articles by M. Ibrahim
Total Records ( 12 ) for M. Ibrahim
  N. Ismail , M. Ibrahim , S. Zareen , S.N. Tajuddin , M.H.F. Rahiman and M.N. Taib
  Analysis of the aroma profile of agarwood incense smoke by varying the sampling time is presented in this study. The compound extraction was performed with the implementation of using Gas Chromatography-Flame Ionization Detector (GC-FID), Gas Chromatography-Mass Spectroscopy (GC-MS) and solid phase microextraction (SPME) on commercial, low and high quality agarwood. The extraction is based on agarwood smoke and headspace volatile (vapor) via SPME fibre type DVB-CAR-PDMS under three different sampling 15, 30 and 60 min. The result revealed that the agarwood smoke are made of three major groups, monoterpene hydrocarbon, sesquiterpene hydrocarbon and oxygenated sesquiterpene. The decreasing of chemical compounds composition in several compounds during the extraction showed that sampling time gave effect to the compounds composition. The finding is very significant and it is beneficial for further analysis especially for agarwood grading.
  M.R. Tabassum , A.Ul. Gias , M.M. Kamal , S. Islam , H.M. Muctadir , M. Ibrahim , A.K. Shakir , A. Imran , S. Islam , M.G. Rabbani , S.M. Khaled , M.S. Islam and Z. Begum
  Most of the researches done in the fields of skin detection has been trained and tested on human images of African, Mongolian and Anglo-Saxon ethnic origins for face recognition, human motion detection, pornographic and nude image prediction, etc. Although, there are several intensity invariant approaches to skin detection, the skin color of Indian sub-continentals have not been focused separately. The approach of this research is to make a comparative study between three image segmentation approaches using Indian sub-continental human images, to optimize the detection criteria and to find some efficient parameters to detect the skin area from these images. The experiments observed that HSV color model based approach to Indian sub-continental skin detection is more suitable with considerable success rate of 91.1% true positives and 88.1% true negatives.
  M.A. Quddus , M.H. Rashid , A.H. Khan , M. Ibrahim and A. Khatun
  Four improved cropping patterns, BRRIdhan28-Fallow-BRRIdhan30, BRRIdhan28-Fallow-BRRIdhan31, BRRIdhan29-Fallow-BRRIdhan30 and BRRIdhan29-Fallow-BRRIdhan31 were evaluated in the farmers field along with the farmers` existing major cropping patterns BR14-Fallow-BR11 and BR14-Fallow-Pajam in six blocks under Sadar, Kapasia and Sreepur Upazilas of Gazipur district. Grain yields of all the alternative improved cropping patterns were significantly higher than the farmers` existing cropping patterns in each site. In all locations, pattern BRRIdhan29-Fallow-BRRIdhan31 gave higher grain yield and higher gross margin compared to other tested patterns.
  N.M. Zain , N.H. Hassan , M. Ibrahim and M.S. Wahab
  Three-Dimensional Printing (3DP) is one of the techniques in Solid Freeform Fabrication (SFF) which is used to fabricate physical objects directly from CAD data sources and currently the raw material for the 3D printer is expensive and limited to a number of choices. This study reports on the development of Palm Oil based Fly Ash (POFA) composite as a low-cost alternative material for prototype fabrication via the 3DP process. Powder-binder mixtures containing POFA powder with maltodextrin and Polyvinyl Alcohol (PVA) were mechanically blended through the ball milling process. The mixtures was successfully tested to fabricate samples via the 3DP machine, Z310, using distilled water as the binding liquid which the sample was then post-treated using the ZMax solution to improve its mechanical properties. The mechanical properties, dimensional accuracy and surface quality of the samples were evaluated and the results were compared to the existing material, ZP102 plaster powder-based samples. Initial results prove that the mechanical properties of the new samples are better than the existing ZP-102-based samples.
  M. Zulhaziman , M. Salleh , M. Ibrahim , Abd Mutalib and Cecilia Devi Wilfred
  Deep desulfurization of fuels has attracted lot of attention from growing number of researchers due to more stringent regulations imposed on sulfur content. There is a great demand to comply the regulation in current technology (hydrodesulfurization) because it requires high pressure, high temperature and high hydrogen consumption. Furthermore, aromatic sulfur compounds are also inefficient to be removed in current technology. Ionic Liquids (ILs), as class of green solvent, actually play important role as a promising alternative for desulfurization of fuels. This study focuses on the selection of potential ILs for extraction of aromatic sulfur compound involving the effect of higher alkyl chain, different cation-anion and nitrile group incorporation.
  M. Mokhles , M.A. Abd El Wahhab , M. Tawfik , W. Ezzat , K. Gamil and M. Ibrahim
  The present research were tempted to investigate whether Aflatoxin is an additive factor in development of HCC through detecting its metabolite Aflatoxin M1 in serum and urine of HCC and cirrhotics in Egypt. Present study comprised (46) Hepatocellular Carcinoma (HCC) patients with mean age (56.28+8.08), 30 males and 16 females, (12) cirrhotic patients with mean age (47.83±18.20), 7 males and 5 females and (12) sex and age matched healthy controls. All were exposed to, liver function tests, abdominal ultrasonography and detection of Aflatoxin metabolite M1 in serum and urine by means of the reverse phase HPLC device. Aflatoxin M1 was detected in sera of HCC group, cirrhotics and controls (57.8%) (5.61±17.21 ng mL-1), (91.7%) (19.23±20.42 ng mL-1) and (50%) (0.66±0.84 ng mL-1), respectively and in urine (41.3%) (3.82±8.03 ng mL-1) (91.7%) (43.22±45.02 ng mL-1) and (50%) (0.98±1.4 ng mL-1), respectively representing significant increase in the serum of the cirrhotic group (p<0.02) and a high significant increase in urine of the cirrhotic group (p<0.0001). Among HCC group patients, there is high significant value of M1 concentration in urine of upper Egypt residents compared to those of lower Egypt (p<0.002). The mean value of Aflatoxin M1 concentration among females of the HCC group was significantly higher than that among males (p = 0.006). There is higher statistical significance of aflatoxin prevalence and concentration in serum and urine of cirrhotics than HCC patients and controls and in concentration in urine of HCC patients from upper than lower Egypt.
  Sajid Ali , S. Jawad A. Shah and M. Ibrahim
  A preliminary infection experiment was carried out during 2005-06 to identify slow yellow rusting sources of resistance in 20 NIA-wheat breeding lines along with Morocco as susceptible check at Nuclear Institute for Food and Agriculture, Peshawar. It was revealed that the current pathotypes of Puccinia striiformis West. tritici (Pst) were found virulent on all tested genotypes except NIA-6 and NIA-14. Host-pathogen compatibility in remaining lines facilitated the assessment of slow rusting trait and it was assessed through the epidemiological parameters viz., Final Rust Severity (FRS), Area Under Rust Progress Curve (AURPC) and Infection Rate (IR). Maximum FRS of 70% was rated in five lines while in the remaining 13 lines it ranged between 10 to 60%. Relative AURPC values up to 30% of the susceptible check were recorded for 10 lines while up to 70% for eight lines, showing desirable and good slow rusting behavior, respectively. Relative infection rate values ranged from 0 for NIA-7 to 1100-1300, recorded for eight lines. NIA-7 has a constant severity of 10% over assessment dates with lower AURPC value and was considered as better slow rusting line. Among various epidemiological parameters used for assessment of slow rusting trait, AURC was found to be a reliable parameter. Infection rate, on the other hand did not reveal the actual slow rusting behavior of the tested lines. Based on slow rusting trait, the tested lines may probably have genes for varying degrees of slow yellow rusting and can be used for further manipulation in wheat improvement program after confirmatory studies.
  M. K. Munira , M. G. Rasul , M. A. K. Mian , M. Ibrahim and A. Saha
  Nine True Potato Seed (TIS) progenies originated from CIP, India (HPS-7/67, HPS-II/67, HPS-II/13, HPS-7/13) and TCRC, Bangladesh (HPS-819, HPS-9/8, HPS-9/67, HPS-364/9) were evaluated for yield potential in F1C0 generation at Bangabandhu Sheik Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh during November 1995 to March, 96. Bangladeshi progenies performed equally good or even better than Indian progenies for tuber yield, days to tuber initiation, tuber number/m2, foliage coverage, and harvest index. High genetic variation, high heritability and considerable genetic gain were observed in plant height, foliage coverage, tuber number/ma and also yield. Tuber yield was found highly correlated with tuber number, foliage coverage, plant height, stems per plant and high direct effect was offered by these traits towards increasing yield. Based on yield potentiality, progenies HPS-7/76, HPS-7/13, HPS8/9, HPS-364/9 performed well and were selected for future TPS breeding to develop pr9genies having high yield with good keeping quality.
  A.N.M. Mamun , D.A. Choudhury , M. Ibrahim , M. Altaf Hossain and A.H.M. Fazlul Kabir
  The experiment was conducted to evaluate the performance of chilli as intercropped with mustard. The plant population of mustard varied from 25 to 75% against 100% chilli plant population in different intercropping treatments. Different intercropping combinations significantly influenced plant height, fruit length, fruit diameter, individual fruit weight and yield of dried chilli. Yield of dried chilli decreased with the increase of mustard population but 100% chilli + 25% mustard combination produced identical yield with sole chilli. At least 25% mustard could be accommodated in chilli + mustard intercropping without reduction in chilli yield. Mustard could be grown with chilli as intercropped in seeding ratio of 25% mustard + 100% chilli for higher yield and profit.
  M.M. Rashid , M. Mofazzel Hossain , M.Z. Alam , M. Ibrahim and M.K.A. Bhuiyan
  Experiments on seasonal abundance of spiraling whitefly, Aleurodicus dispersus on guava and its control were conducted. The seasonal distribution of spiraling whitefly indicated that winter months December, January and February were major peak period of infestation. Adult whitefly started to infest the guava plants in September and increased to maximum in January. Whitefly infestation decreased to zero from April and continued to August. The change in the level of infestation was due to difference in environmental temperature and rainfall. Field trials were conducted to test the efficacy of some common insecticides against the whitefly. Although all the chemicals reduced the population of different stages of whitefly, the overall effect was found to be better with systemic insecticides. Dimethoate was found most effective in controlling spiralling whitefly of guava followed by spray treatment with, phosphamidon, cypermethrin, malathinon. Diclorvos was comparatively less effective insecticide. Study on biological control of whitefly showed that a coccinelid predator Axinocymnus puttarudriahi Kapur and Manshi (Coleoptera: Coccinellidae) was effective in controling the whitefly without associated ant.
  J. Nahed-Toral , H. Gomez-Castro , R. Pinto-Ruiz , F. Guevara-Hernandez , F. Medina-Jonapa , M. Ibrahim and D. Grande-Cano
  A participatory research and development project in establishment of agrosilvopastoral systems was documented. This study was carried out in the village Tierra Nueva (TN), located in the Buffer zone of the El Ocote Biosphere Reserve (EOBIRE) in the state of Chiapas, Mexico. This zone is part of the area of influence of the Mesoamerican Biological Corridor in Mexico (MBCM). A variety of methods related to agroforestry were used, along with the Farmer Field Schools Methodology by which producers may develop new aptitudes and knowledge regarding cattle raising and conservation. The bovine production system and productive diversification of cattle raising units were analyzed. Grazing units are characterized and their carrying capacity estimated. Chemical-nutritional composition and ruminal degradation of foliage is characterized for woody fodder species. Finally, the experience is projected to the future in order to strengthen local innovation processes.
  J.A. Jimenez-Trujillo , M. Ibrahim , D. Pezo , F. Guevara-Hernandez , H. Gomez-Castro , J. Nahed-Toral and R. Pinto-Ruiz
  The impacts of a Silvopastoral System (SPS) upon animal productivity (daily and total weight gain), biomass availability and production system profitability were evaluated in two contrasting production systems, one with Brachiaria brizantha pasture and chicken manure feed and the other with Brachiaria brizantha in association with Leucaena leucocephala. The study was carried out in San Juan Chiquito de Esparza, in the county of Puntarenas, Costa Rica with an average temperature of 27°C and with an annual precipitation that varied between the 1500 and 2000 mm. The study was carried out in the dry as well as the rainy season, to be able to include data from both periods. To evaluate animal productivity, 12 weaned calves of mixed breed Brown-Brahmin with homogeneous phenotypic characteristics and an average weight of 193.83±20.71 kg were randomly distributed in an experimental design with two treatments and six repetitions. Biomass availability and grass and leucaena quality were measured in two treatments and during the wet and dry season. Economic analysis was performed with a partial budget and a 12 years model of both systems. The ANOVA results did not show significant differences with respect to daily or total weight gain between treatments in either wet or dry seasons but calves experienced significantly more weight gain in the rainy season than in the dry season, regardless of treatment. With regard to the Leucaena quality variables, significant differences were found between seasons for dry mass and tannins not for raw protein, DMD in vitro and mimosine. For the Brachiaria pasture, significant differences were found respect to availability dry mass, raw protein and DMD in vitro between treatments and between seasons. Economic results indicated that the silvopastoral system was more profitable than the conventional system in the 12 years model used. These overall results represent an important component of a technological innovation for the tropical livestock.
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