Browsing by Author "Islam, A."

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    A randomized clinical trial to compare the efficacy of erythromycin, ampicillin and tetracycline for the treatment of cholera in children
    (1998-07) Roy, S.K.; Islam, A.; Ali, R.; Islam, K.E.; Khan, R.A.; Ara, S.H.; Saifuddin, N.M.; Fuchs, G.J.
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    A randomized double blind trial of aspirin versus placebo in cholera and non-cholera diarrhoea
    (1986-09) Islam, A.; Bardhan, P.K.; Islam, M.R.; Rahman, M.
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    A study of slow-release N-carrters on rice
    (Journal of Bangladesh Academy of Sciences, 1987) Rashid, M. H.; Islam, A.; Ahmed, I. U.; Islam, M. S.; Mandal, R.
    A field experiment was carried out to monitor the relative efficiency of urea, urea formaldehyde (UF), sulphur coated urea (SCU) and isobutylidene diurea (IBDU) each at the rate of 40, 80 and 120 kg N/ha on growth, yield and chemical composition of rice grown during aman season. Application of nitrogen caused a significant increase in number of tillers, height and yields of straw and grain irrespective of the sources. Among the chemical composition (N, P, K, Ca and Mg) of straw and grain only N content was significantly improved. All these components increased with nitrogen rate. The effectiveness of the N-carriers in increasing the parameters followed the order: SCU> Urea> IB DU > UF. Percent recovery of added nitrogen generally decreased with increasing amount of nitrogen. SCU was found to be superior to conventional urea whereas IBDU and UF were inferior due to slow release of nitrogen. Anaerobic incubation of urea, UF, SCU and IBDU for 4 weeks caused a significant release of NH4-N from 59.9 to 78.2%. An initial rapid production of NH4-N was followed by a gradual release with time. More than 75% urea and SCU decomposed to NH4-N within 2 and 4 weeks respectively. UF was more resistant to decomposition as compared to SCU and IBDU. However, the trend of degradation was similar for all the compounds. Accumulation of a small quantity of NO3-N disappeared rapidly within 2 weeks time.
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    Ammonium fixation in some Bangladesh Soils
    (Bangladesh J. Agric., 1975) Huq, S. M. Imamul; Islam, A.; Rashid, M. H.
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    Amounts and mineralization of organic phosphorus compounds and derivatives in some surface soils of Bangladesh
    (Elsevier Scientific Publishing Company, 1977) Islam, A.; Mandal, R.
    Concentrations of a few organic phosphorus compounds and their hydrolysis products have been determined in a number of Bangladesh soils. The amounts of DNA and its derivatives, inositol penta- and hexaphosphates, ranged from 0.16 to 1.30, and 18.5 to 130.0 ppm, respectively. The hydrolysis products of phospholipids such as choline, ethanolamine and glycerophosphate ranged from 0.36 to 3.29, 0.28 to 2.52 and 0.20 to 1.05 ppm, respectively. Multiple correlation suggested that pH, organic matter, organic phosphorus and total phosphorus were collectively related to the amounts of different organic phosphorus fractions in soil samples. Individually, DNA and its derivatives were found to be significantly related to total phosphorus and inositol penta- and hexaphosphates to organic phosphorus. Choline was significantly related to organic matter, organic phosphorus and total phosphorus; ethanolamine to organic matter and total phosphorus; and glycerophosphate to organic phosphorus. Moisture and lime promoted progressive mineralization of organic phosphorus with time. Potassium dihydrogen phosphate, glucose and ammonium sulphate showed rapid initial and final mineralization. In contrast, the application of compost caused an initial luxury immobilization followed by a marked increase in mineralization with time. Maximum mineralization was observed when ammonium sulphate was added to samples in submerged conditions. The least mineralization occurred when lime was added to samples at 50% of field moisture capacity.
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    Antioxidant, analgesic and anti-inflammatory activities of the herb Eclipta Prostrate
    (© 2011 Academic Journals Inc., 2011) Hossain, M.S.; Alam, M.B.; Chowdhury, N.S.; Asadujjaman, M.; Zahan, R.; Islam, M.M.; Mazumder, M.E.H.; Haque, M.E.; Islam, A.
    The present study was designed to investigate the antioxidant, analgesic and anti-inflammatory potential of the methanolic extract along with its organic soluble fractions of the herb Eclipta prostrata. In addition, total phenolic and flavonoid content and total antioxidant capacity were also determined. Antioxidant potential of the extract/fractions was evaluated by DPPH (1,1diphenyl-2-picrylhydrazyl), NO (nitric oxide) and ONOO- (peroxynitrite) scavenging assay method. Ethyl acetate fractions (EtOAc) showed highest scavenging activity in all the methods with IC50 value of 12.98±0.08, 45.98±0.07 and 14.45±0.18 μg mL-1 for DPPH, NO and ONOO- assay method, respectively. In reducing power assay, EtOAc fraction also showed significant (p<0.001) activity. Further, the extract/fractions were studied for their analgesic (hot plate, tail immersion and acetic acid induced writhing test) and anti-inflammatory (carrageenan induced paw edema in rats) activities at a dose level of 200 and 400 mg kg-1 body weight. Among all the extract/fractions, EtOAc fraction showed a dose dependent and significant (p<0.005, p<0.05) analgesic activity in all the tested method. EtOAc fractions also reduced the paw edema considerably (86.80% inhibition after 3 h, p<0.005, p<0.05) in dose dependent manner compared to carrageenan induced rat. Altogether, these results suggest that the MeOH extract and its organic soluble fractions could be used as a potential antioxidant, analgesic and anti-inflammatory agent
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    Antioxidant, analgesic and anti-inflammatory activities of the herb Eclipta Prostrate
    (© 2011 Academic Journals Inc., 2011) Hossain, M.S.; Alam, M.B.; Chowdhury, N.S.; Asadujjaman, M.; Zahan, R.; Islam, M.M.; Mazumder, M.E.H.; Haque, M.E.; Islam, A.
    The present study was designed to investigate the antioxidant, analgesic and anti-inflammatory potential of the methanolic extract along with its organic soluble fractions of the herb Eclipta prostrata. In addition, total phenolic and flavonoid content and total antioxidant capacity were also determined. Antioxidant potential of the extract/fractions was evaluated by DPPH (1,1diphenyl-2-picrylhydrazyl), NO (nitric oxide) and ONOO- (peroxynitrite) scavenging assay method. Ethyl acetate fractions (EtOAc) showed highest scavenging activity in all the methods with IC50 value of 12.98±0.08, 45.98±0.07 and 14.45±0.18 μg mL-1 for DPPH, NO and ONOO- assay method, respectively. In reducing power assay, EtOAc fraction also showed significant (p<0.001) activity. Further, the extract/fractions were studied for their analgesic (hot plate, tail immersion and acetic acid induced writhing test) and anti-inflammatory (carrageenan induced paw edema in rats) activities at a dose level of 200 and 400 mg kg-1 body weight. Among all the extract/fractions, EtOAc fraction showed a dose dependent and significant (p<0.005, p<0.05) analgesic activity in all the tested method. EtOAc fractions also reduced the paw edema considerably (86.80% inhibition after 3 h, p<0.005, p<0.05) in dose dependent manner compared to carrageenan induced rat. Altogether, these results suggest that the MeOH extract and its organic soluble fractions could be used as a potential antioxidant, analgesic and anti-inflammatory agent
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    Antioxidant, analgesic and anti-inflammatory activities of the herb Eclipta Prostrate
    (© 2011 Academic Journals Inc., 2011) Hossain, M.S.; Alam, M.B.; Chowdhury, N.S.; Asadujjaman, M.; Zahan, R.; Islam, M.M.; Mazumder, M.E.H.; Haque, M.E.; Islam, A.
    The present study was designed to investigate the antioxidant, analgesic and anti-inflammatory potential of the methanolic extract along with its organic soluble fractions of the herb Eclipta prostrata. In addition, total phenolic and flavonoid content and total antioxidant capacity were also determined. Antioxidant potential of the extract/fractions was evaluated by DPPH (1,1diphenyl-2-picrylhydrazyl), NO (nitric oxide) and ONOO- (peroxynitrite) scavenging assay method. Ethyl acetate fractions (EtOAc) showed highest scavenging activity in all the methods with IC50 value of 12.98±0.08, 45.98±0.07 and 14.45±0.18 μg mL-1 for DPPH, NO and ONOO- assay method, respectively. In reducing power assay, EtOAc fraction also showed significant (p<0.001) activity. Further, the extract/fractions were studied for their analgesic (hot plate, tail immersion and acetic acid induced writhing test) and anti-inflammatory (carrageenan induced paw edema in rats) activities at a dose level of 200 and 400 mg kg-1 body weight. Among all the extract/fractions, EtOAc fraction showed a dose dependent and significant (p<0.005, p<0.05) analgesic activity in all the tested method. EtOAc fractions also reduced the paw edema considerably (86.80% inhibition after 3 h, p<0.005, p<0.05) in dose dependent manner compared to carrageenan induced rat. Altogether, these results suggest that the MeOH extract and its organic soluble fractions could be used as a potential antioxidant, analgesic and anti-inflammatory agent
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    Availability of soil organic phosphorus to crops
    (Nuclear science and applications, 1984) Mandal, R.; Islam, A.
    The influence of each of potassium dihydrogen phosphate, ammonium sulphate, compost and glucose at the rate of 100 kg ha -i and liming of soil to pH 7.0, on the uptake of phosphorus from organic fraction by rice, jute, wheat, soybean and tomato plants has been studied. All the crops absorbed mineralized soil organic phosphorus signiBcantly. Plants absorbed more organic phosphorus from soil treated with ammonium sulphate and lime.
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    Breast feeding and oral rehydration at home during diarrhoea to prevent dehydration.
    (1992-08) Faruque, A.S.G.; Mahalanabis, D.; Islam, A.; Hoque, S.S.; Hasnat, A.
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    Breast-feeding counselling in a diarrhoeal disease hospital
    (1996) Haider, R.; Islam, A.; Hamadani, J.; Amin, N.J.; Kabir, I.; Malek, M.A.; Mahalanabis, Dilip; Habte, D.
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    Cation activity ratios in equilibrium soil solution and uptake of K, Ca and Mg by lawn grass
    (Journal of Bangladesh Academy of Sciences, 1977-10-21) Islam, A.; Anam, K.; Huq, S. M. Imamul; Hossain, A.
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    Common diarrhea pathogens and the risk of dehydration in young children with acute watery diarrhea: a case-control study
    (1993-07) Faruque, A.S.G.; Mahalanabis, D.; Islam, A.; Hoque, S.S.; Hasnat, A.
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    Comparison of methods to evaluate k availability in rice soils
    (Srilankan Journal of Agricultural Sciences, 1988) Islam, A.; Hoque, S.; Mandal, R.; Chowdhury, S. A.
    tions have been used to evaluate K availability from 29 rice soils. Of the methodsy boiling IN HNO^ extracted the highest amount of available K. The methods may be arranged as boiling IN HNO2 > hot 1.4N H^SO > IN Na^SO. (pH 1) > modified IN NaCl (pH 1) > 0.7N HCl > 0.5N HCl > Morgan’s reagent > 0.5M NaHCO^ (pH 8.5) > IN NaCl > IN NH^OAa > Water according to their relative efficiency. Extractants having acidic character were found to he superior over other methods. pH fluctuations possibly accentuated K release from the soils. All the methods correlated significantly with 60 days plant K. Highly significant correlation at 0.1% level was revealed by boiling 1 N HNO^j hot 1.4N H^SO^, IN NaCl (pH 1) and 0.5M NaHCO. (pH 8.5) with plant K. Only IN NaCl (pH 1) extractable K showed significant correlation with 90 days plant K.
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    Conversion of urea placed at different depths and its subsequent impact on growth and yield of rice
    (Indian J. of Agric. Sci., 1980-11) Islam, A.; Mandal, R.; Ahmed, Z.; Rashid, M. H.
    In a study on the effect of urea with depths in rice {Oryza sativa Linn.), conversion of urea into NHj-N was maximum at 15 days in most of the treatments and into NOj-N was at 7 days. But with surface placement of urea it continued up to 15 days of placement and thereafter the concentrations of both declined with time in all the treatments. Fertilizers @ 80 kg N + 60 kg P + 40 kg K/ha placed 8-cm depth produced the highest dry matter and grain yield. At this treatment, the rice plants also accumulated highest amount of N in the shoot and grain.
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    Direct absorption of organic phosphate by rice and jute plants
    (International Journal of Plant Nutrition, Plant Chemistry, Soil Microbiology and Soil-Borne Plant Diseases, 1979-10) Mandal, R.; Islam, A.; Osman, K. T.
    Appreciable amounts of organic phosphate from calcium glycerophosphate, lecithin, sodium phytate and inosine-5-monophosphate were absorbed directly by rice plants and that from calcium glycerophosphate and lecithin by jute plants under sterile and non-sterile conditions. The plants absorbed phosphate both in organic and inorganic combinations and the deficit of one form in the media made the other 'more available' to the roots. Sterilization of jute roots with 0.r„ HgCl^ stopped the absorption of phosphate upto 4 days while the treatment mixture of CjHjOH and HtOj indicates inhibitory effects on roots of neither plants.
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    Distribution o f hydrolysis products o f inositol penta- and hexaphosphates in some humid tropical soils
    (Journal of Trop. Agric., 1978-04) Mandal, R.; Islam, A.
    'I'he proportions of' inositol jjentaphosphate (IPb) and hexaphospliate (IPa) varied significantly and were found to be related to the organic matter and organic P contents of the soils sampled. Esters of myo + D-chiro IPf, together accoimted for 48 to 81 per cent and scylloinositol represented about 19 to 52 per cent of the total hcxaphosphate. Simple correlation revealed that alkaline conditions probabK’ favoured the synthesis of scyllo //■’e by phytase and multiple correlation suggested that organic matter, organic P and pH were collectively related to the amounts of different inositol polyphosphate fractions in soil samples. The ratio of IP^ to IP;, varied between 0-7 and 4-3 and that of myo + D-chiro to scyllo IP^ between 0-9 and 4-3.
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    Distribution of organic phosphate compounds in some soil profiles of Bangladesh
    (Bangl. J. Sci. Res., 1980) Mandal, R.; Islam, A.; Osman, K. T.
    Inositol phosphate, phospholipid^ ribonucleic acid and deoxyribo nucleic acid along with their derivatives decreased gradually with depth in the profiles, while their variable amounts were jointly correlated with organic phosphate, total phospate, organic matter, total nitrogen, pH and clay content of the soil. However, individually inositol phosphate was significantly correlated with organic phosphate, organic matter, pH and clay at the 0,1% level, and ribonucleic and deoxyribonucleic acids and their derivatives with organic phosphate and organic matter at the 5 and 10% level respectively while phospholipids with none of the factors studied.
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    Effect of acid leaching, liming and organic matter additions on potassium fixation in some Bangladesh soils
    (Dacca University Studies, 1979-07) Huq, S. M. Imamul; Islam, A.; Rashid, M. H.