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Search Results: 1 - 10 of 654727 matches for " A. Barua and J. Alam "
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Mir Monir Hossain*, S. M. Moazzem Hossen, Md. Shahidul Islam, T. T. Tanmy, A. Barua and J. Alam
International Journal of Pharmaceutical Sciences and Research , 2013,
Abstract: The research work was conducted with the fruits of Terminalia belerica (Fam: Combretaceae) to investigate antibacterial & antifungal activities. The fruits of the plant were successively extracted by cold extraction process by using two solvents namely ethanol and acetone. Antimicrobial activities of the extracts of both solvents were investigated by a simple agar diffusion method using ten pathogenic bacteria. The extracts of ethanol showed moderate activity against all tested pathogenic bacteria except Bacillus subtilis. Again acetone extracts showed moderate activity against Vibrio cholerae, Staphylococcus aureus, Bacillus subtilis, Shigella dysenteriae and Escherichia coli. All the activities were determined by measuring the zone of inhibition compared with the standard antibiotic (Amoxicillin). Antifungal screening was done for the ethanol and acetone extracts by disk diffusion method with ten pathogenic fungi. Both the extracts showed moderate activity against Colletotrichum corcori, Fusarium equiseti and Candida albicans. In this case, Griseofulvin was used as standard antibiotic.
Mir Monir Hossain*, S. M. Moazzem Hossen, Md. Shahidul Islam, T. T. Tanmy, A. Barua and J. Alam
International Journal of Pharmaceutical Sciences and Research , 2013,
Abstract: Diclofenac Potassium, a sparingly soluble non-steroidal anti-inflammatory drug, was taken as candidate for decreasing the onset of action time and increasing its bioavailability by overcoming its first pass metabolism. Diclofenac Potassium orally disintegrating tablet (ODT) formulations were developed using lyophilization technique. The freeze dried tablet formulations were prepared by freeze-drying an aqueous solution of Diclofenac Potassium, matrix former, filler, and an anti-collapse. The tablets were evaluated from both compendial and non-compendial criteria (i.e. uniformity of weight, uniformity of content, friability, in vitro disintegration time, in vitro dissolution, wetting time, in vivo disintegration time, moisture analysis and scanning electron microscopy. The best formula results showed that lyophilized ODT disintegrated within few seconds and showed significantly faster in-vitro dissolution rate of Diclofenac Potassium in comparison with commercially available immediate release tablet Diclofenac Potassium tablet (Cataflam ). The in-vivo evaluation for the best formulation (LD#11) was performed in comparison with the immediate release tablet Diclofenac Potassium tablet (Cataflam 50 mg). A randomized crossover design was adopted in the comparative bioavailability study and was done on a sample of four healthy human volunteers. Statistical analysis revealed significant difference between the Cataflam immediate release tablet and Diclofenac Potassium ODT (LD#11) regarding the following pharmacokinetic parameters: Cmax and Tmax (p < 0.05); while insignificant difference regarding t1/2, AUC(0-24), AUC(0-∞), and mean residence time (MRT) (p > 0.05). The relative bioavailability of the Diclofenac Potassium ODT (LD# 11) was 101.09% relative to the immediate release tablet (Cataflam ) taken as reference product. Though a significant decrease in the time of onset of action; however no significant increase in the relative bioavailability was observed.
Computerization Of Information System In Sheth L.G. General Hospital, Ahmedabad - A Repot
Barua A,Naravati K.J
Indian Journal of Community Medicine , 1992,
Processing and characterization of epoxy nanocomposites with Mwcnt's/Cnf's using thinky and 3-roll shear mixing techniques
Hosur, M.;Barua, R.;Zainuddin, S.;Jeelani, S.;Kumar, A.;Trovillion, J.;Pereza, Y.;
Matéria (Rio de Janeiro) , 2010, DOI: 10.1590/S1517-70762010000200023
Abstract: in this work, thinky mixing method was used to disperse multi-walled carbon nanotubes (mwcnt's) and carbon nanofibers (cnf's) in sc-1 epoxy either in isolation or in combination with 3-roll shear mixing. to achieve better dispersion, mwcnt mixing with sc-1 resin directly or pre-mixed with a solvent and then mixed with sc-1 resin after evaporating the solvent. dynamic mechanical analysis (dma), thermogravimetric analysis (tga), flexural tests, electrical conductivity tests and micrographic analysis were performed on neat, 0.2 and 0.4wt% mwcnt/cnf infused sc-1 epoxy to observe the loading effect on thermo-mechanical properties of composites. dma results indicated improvement on storage modulus and glass transition temperature, tg, while flexural results exhibited enhanced flexural strength and modulus with up to 0.4wt% mwcnt/cnf infused epoxy resin over neat. tga results revealed improved residue content but almost constant decomposition temperature for nanophased resin compared to neat. however, these enhancements were observed only up to 0.2 wt. % loading after which the properties were seen to either reduce or not significantly improve. these results indicate that the methods used for dispersion is suitable for low weight percent loading only.
Performance Assessment of Sub-Percolating Nanobundle Network Transistors by an Analytical Model
N. Pimparkar,J. Guo,M. A. Alam
Physics , 2006, DOI: 10.1109/TED.2007.891871
Abstract: Nanobundle network transistors (NBTs) have emerged as a viable, higher performance alternative to poly-silicon and organic transistors with possible applications in macroelectronic displays, chemical/biological sensors, and photovoltaics. A simple analytical model for I-V characteristics of NBTs (below the percolation limit) is proposed and validated by numerical simulation and experimental data. The physics-based predictive model provides a simple relation between transistor characteristics and design parameters which can be used for optimization of NBTs. The model provides important insights into the recent experiments on NBT characteristics and electrical purification of nanobundle networks.
Efficiency in Educational Funding: A Theoretical Analysis of Emerging Issues
Nissar A. Barua
Review of Research , 2012,
Abstract: Given the compelling reason for the state to correct the under-provision of education through the state budget, the scrutiny associated with public expenditure also is inducted into the realm of education. Public allocation in education must be justified as it involves opportunity cost in the form of other critical goods and services foregone. This involves making an appraisal of efficiency in provision of education on the basis of its the social profitability of education On the other hand, the measure of cost effectiveness provides an alternative mechanism to estimate how efficiently is education provided with public resources. Cost effectiveness is perceived in terms of attainment from educational programmes given the resources expended in their provision. In the last fifty-six years, India has made impressive advances in Gross Enrolment Ratio (GRR), especially in elementary level education. However, retention of the children for the duration of the educational cycle poses a much more difficult problem revealing that despite huge allocation made in education, massive wastages takes place. Excessive repetitions and failures can be corrected if the existing information gap is bridged the state can correct distortions like incompatible feeder institutions, incomprehensible medium of instruction, alien curriculum and a syllabus that aggravates the problem.
Possible use of fly ash generated from Barapukeria Power Plant for sustainability
Md. Jahir Bin Alam,A. S. M. A. Awal,M. J. B. Alam,A. Hasan
Journal of Engineering and Applied Sciences , 2006,
Abstract: Fly ash is extensively used in concrete as an admixture in order to reduce cost of cement. For sustainability in production of cement in Bangladesh, feasibility of fly ash generated from Barapukoria Power Plant was tested. This was used as an admixture with Shah Special cement in different proportion in order to reduce cost of cement and environmental pollution such as green house effect, problem of fly ash as solid waste. Laboratory test for different parameters such as compressive strength, workability of such mixtures were performed. The results show almost no sacrifice for the strength of cement due to mixture of fly ash with a proportion of 10%. The results show that curing of the even plain concrete in chloride environment is not desirable right from the time of demoulding.
Study on traffic noise level of Sylhet by multiple regression analysis associated with health hazards
J. B. Alam, M. Jobair Bin Alam, M. M. Rahman, A. K. Dikshit, S. K. Khan
Iranian Journal of Environmental Health Science & Engineering , 2006,
Abstract: The study reports the level of traffic-induced noise pollution in Sylhet City. For this purpose noise levels have been measured at thirty-seven major locations of the city from 7 am to 11 pm during the working days. It was observed that at all the locations the level of noise remains far above the acceptable limit for all the time. The noise level on the main road near residential area, hospital area and educational area were above the recommended level (65dBA). It was found that the predictive equations are in 60-70% correlated with the measured noise level. The study suggests that vulnerable institutions like school and hospital should be located about 60m away from the roadside unless any special arrangement to alleviate sound is used.
Nuevas citas y ampliación de la distribución conocida de Ropalóceros en la Comunidad Valenciana y provincia de Teruel
Montagud, S.,García-Alamá, J. A.
Graellsia , 2007,
Abstract: The authors summarize data for 18 species of Rhopalocera to complete knowledge of their distribution and biology in Comunidad Valenciana and Teruel province. These species have been selected for two reasons: 1) Danaus plexippus (Linnaeus, 1758), Erebia meolans (de Prunner, 1798), Polyommatus (Meleageria) daphnis (Denis & Schiffermüller, 1775), Laeosopis roboris (Esper, 1789), Nordmannia acaciae (Fabricius, 1787) and Plebeius hespericus (Rambur, 1839) are new records for Comunidad Valenciana and 2) Euchloe belemia (Esper, 1800), Pieris mannii (Mayer, 1851), Zegris eupheme (Esper, 1804), Colotis evagore (Klug, 1829), Aporia crataegi (Linnaeus 1758), Erebia epistygne (Hübner, 1819), Melitaea cinxia (Linnaeus, 1758), Libythea celtis (Laicharting, 1782), Glaucopsyche (Iolana) iolas (Ochsenheimer, 1816), Scolitantides orion (Pallas, 1771), Neozephyrus quercus (Linnaeus, 1758) and Plebeius (Aricia) morronensis Ribbe, 1910, for these species, known distribution is considerably extended and interesting data about their biology are provided. Se aporta información sobre 18 especies de ropalóceros presentes en la Comunidad Valenciana y provincia de Teruel. Algunas de estas especies se dan a conocer por vez primera de esta región, como es el caso de Danaus plexippus (Linnaeus, 1758), Erebia meolans (de Prunner, 1798), Polyommatus (Meleageria) daphnis (Denis & Schiffermüller, 1775), Laeosopis roboris (Esper, 1789), Nordmannia acaciae (Fabricius, 1787) y Plebeius hespericus (Rambur, 1839). Para el resto se amplía considerablemente su distribución conocida y/o se acompa a de algunos comentarios de interés sobre su biología: Euchloe belemia (Esper, 1800), Pieris mannii (Mayer, 1851), Zegris eupheme (Esper, 1804), Colotis evagore (Klug, 1829), Aporia crataegi (Linnaeus 1758), Erebia epistygne (Hübner, 1819), Melitaea cinxia (Linnaeus, 1758), Libythea celtis (Laicharting, 1782), Glaucopsyche (Iolana) iolas (Ochsenheimer, 1816), Scolitantides orion (Pallas, 1771), Neozephyrus quercus (Linnaeus, 1758) y Plebeius (Aricia) morronensis Ribbe, 1910.
Phytotoxins: The Cause of Virulence in Ascochyta rabiei
I. A. Khan,J. A. Khan,S. S. Alam
Pakistan Journal of Biological Sciences , 1998,
Abstract: Isolates of Ascochyta rabiei were collected from different chickpea growing areas of Pakistan. The isolates were tested for virulence on two chickpea cultivars ILC-3297 (resistent) and ILC-1929 (susceptible). These isolates were found to synthesize different amounts of phytotoxins Solanapyrone A and C. The virulence of the isolates were found dependent upon the amounts of phytotoxins produced by these isolates.
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