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Articles by M. Rahman
Total Records ( 12 ) for M. Rahman
  M.B. Rahman , M.M. Rahman , M. Rahman , S.M.L. Kabir , K.H.M.N.H. Nazir and M.M. Amin
  Thirty day-old chicks of Cobb-100 breed with the history of vaccination of parent stock against Newcastle disease (ND) were equally divided into two groups such as group A and B. At 7 days of age of birds, group A was vaccinated with experimentally prepared V4HR-ND vaccine via eye drop @ 106.0EID50/bird to determine the efficacy of this vaccine while group B was kept as unvaccinated control. The birds were used for the study during the period from October 2003 to December 2003. Each bird of group A was boostered with same vaccine @ same dose at 24 days of age. Both the groups (A and B) were challenged after two weeks of post-booster vaccination with 0.25ml inoculum containing 105.0EID50 of virulent field isolates of ND virus intramuscularly. The results of challenge experiment revealed that six birds (40%) of group A succumbed within 3 to 4 days of post-challenge, whereas 15 (100%) unvaccinated control birds of group B showed clinical illness and ultimately died within 3 to 5 days. Thus, the experimental V4HR-ND vaccine conferred 60% protection of vaccinated birds against challenge infection. The mean values of Haemagglutination inhibition (HI) antibody titres of birds in group A were found to have significantly (P<0.01) increased at two weeks of post-booster vaccination. These results indicated that experimental V4HR-ND vaccine induced sufficient humoral immune response which gives satisfactory level of protection against ND.
  S.K. Sarkar , M.B. Rahman , M. Rahman , K.M.R. Amin , M.F.R. Khan and M.M. Rahman
  The sero-prevalence of Mycoplasma gallisepticum (MG) infection of chickens in selected Model Breeder Poultry Farms was determined during the period January to May, 2004. To conduct this study a total of 382 sera samples were collected. Rapid Serum Plate Agglutination (SPA) test was performed using commercial MG antigen (Nobilis® MG) to detect the presence of antibodies against MG. The over all sero-prevalence of MG infection was 58.90% in the study area. The highest prevalence (62.44 %) of MG infection was found in winter season followed by summer season (53.10%). The result further revealed that the infection was higher (59.94%) in female birds than in male birds (48.57%). It was also demonstrated that the infection was higher (62.80%) in Feni sadar than in Chhagoalnaiya thana (53.45%).
  A. K. M. Maqsudul Alam , M. Nasimul Gani , M. Rahman , M. R. Islam , M. Nuruzzaman and S. Khandker
  An experiment was conducted to study the estimate of total biomass (shedded leaves plus roots) during bast fibre crop (jute, kenaf and mesta) cultivation and the performance of biomass in soil fertility. The newly released four varieties of Bangladesh Jute Research Institute were used in the trial viz. Deshi jute BJC-83, Tossa jute OM-1, kenaf HC-95 and mesta HS-24. Each of the new variety produces good amount of biomass and enriches the soil fertility. The highest biomass produced with HC-95 (7.30 t ha-1) and lowest BJC-83 (5.23 t ha-1). Appreciable performance recorded with each of the variety in enriching the soil fertility on post harvest soil. Highest organic carbon (1.31%) nitrogen (0.13%) phosphorus (18 ppm) and potassium (0.183 meq/100) were found with the variety HC-95. The percent increment of organic carbon (OC), nitrogen (N), phosphorus (P) and potassium (K) by the HC-95 were 87.14, 150.00, 63.64 and 30.71 respectively over the initial soil nutrient content. According to the performance of the production of biomass and soil enrichment the varieties were in the order of HC-95> HS-24> OM-1> BJC-83.
  M. Nasimul Gani , A.K.M. Maqsudul Alam , M. Rahman , Shafi Iqbal , M.A. Samad , M. Asaduzzaman , Isidore Gomes and Rebeca Gomes
  The study was conducted to estimate the chemical and physico-mechanical characteristics (quality of fibre) of jute fibre, the popular variety of O-9897 was grown with the application of water hyacinth, chemical fertilizer in soil and control under proper agricultural management. The water hyacinth responded comparatively better in enhancing the fibre quality than chemical fertilizer. Lower chemical constitutes the non-cellulosic portion (lignin and hemicellulose) in fibre indicates good quality, which found with water hyacinth. The percentage of lignin and hemicellulose in fibre with water hyacinth 12 and 20% with chemical fertilizer 13 and 21% and with control 13.6 and 21.20% respectively. The enriched physico-mechanical properties obtained with water hyacinth over the chemical fertilizer and control. The lower values of fineness (35φ) and higher values of whiteness (22.3%), bundle strength (7.61 lbs/mg), tensile strength (80.30 lbs/mg) and breaking tenacity (39.50 lbs/mg) ascertain the high quality of fibre found with water hyacinth. And the values found in fibre with chemical fertilizer, fineness-36.50φ, whiteness 21%, bundle strength-6.99 lbs/mg, tensile strength-78.98 lbs/mg and breaking tenacity- 39 lbs/mg. Thereby the study showed that chemical and physico-mechanical properties of fibre increased with water hyacinth. Study also indicates that the sole chemical fertilizer application in soil may not be possible to maintain the quality of fibre, it may be need an integration of organic matter and chemical fertilizer application in soil to enrich the fibre quality.
  C.K. Saha , M.S. Alam , A. Khatun , Z. Naher , M. Hussain and M. Rahman
  A study was conducted with a view to predict the correlated response in yield taking plant height as the criterion for single trait phenotypic selection in jute. Results indicated that selection on plant height did not reflect a corresponding response in yield. Application of high selection intensity may be risky. So a low intensity selection on plant height should be applied when selection is done based on plant height only. In such situation, yield estimation of the plants above mean height may increase selection efficiency. But for higher yield direct selection appeared to be efficient over indirect selection.
  M. Asaduzzaman , M.A. Bari , M.H. Rahman , N. Khatun , M.A. Islam and M. Rahman
  Anthers of five rice varieties viz. BR-5, BR-31, BR-34, BR-37 and BR-38 were cultured for callus induction and plant regeneration. Anthers were cultured on N6, Z2 and R2 media containing the same hormonal combination 2.5mg/l NAA, 0.5mg/l Kn and 0.5mg/l 2.4-D and incubated at 25 ± 1oC in dark for callus induction. All the varieties in Z2 medium, two varieties in N6 medium and only one variety in R medium produced callus. Out of all responding varieties BR-38 produced highest percentage of callus. Calli induced in different induction media were transferred to MS medium supplemented with 2.0 mg/l BAP + 0.5 mg/l Kn + 1.0 mg/l NAA and 1.0 mg/l Kn + 1.0 mg/l NAA and incubated at 25 ± 1oC in light for plantlet regeneration. Green plantlets appeared within 15-30 days of culture and highest number of regenerated green (33.32%) and albino (11.27%) plantlets were produced in BR-37.
  N.A. Siddique , M.A. Bari , N. Khatun , M. Rahman , M.H. Rahman and S. Huda
  Callus cultures were initiated from axillary shoots on Murashige and Skoog (MS) (1962) medium supplemented with 2,4-D, NAA, and Kn. The highest frequency (85.00%) of organogenic callus induction was observed in MS medium containing 1.0 mg l G 1 NAA and 2.0 mg l G 1 Kn. Development of adventitious shoots occurred when the calli were subcultured in MS medium supplemented in the BAP, NAA, IAA and Kn. Shoots differentiated best (86.00%) from axillary shoot derived callus on MS medium containing 1.0 mg l G 1 NAA and 2.5 mg l G 1 Kn. Regenerated shoots rooted best in MS supplemented in the IBA and Kn. Plantlets were transferred to pots containing sand and soil mixture, acclimatized in a culture room and finally rooted plants were transferred to soil.
  M. Rahman , M. Rahman , M.M. Rahman , A. Koddus and G.U. Ahmad
  In this research, soil-to-plant Transfer Factor (TF) for radiocesium has been measured by field experiment. Soil and grassy plant grown in a contaminated land containing radiocesium in the Atomic Energy Research Establishment (AERE) campus, Savar, Dhaka were collected to investigate the transfer of radiocesium in the soil-plant system. The activities of radiocesium in soil and grassy plant were measured using High Purity Germanium (HPGe) detector coupled with associated accessories. Using the measured activities, TF values were found within the range of 2.7H10•2 to 4.7H10•2, which are reasonably comparable with the values found in the literature. Soil characteristics were also investigated to assist the measured TF values for the corresponding soil. This data set might be useful while calculating radiological human dose via the ingestion pathway in the tropical environment.
  M.A. Awal , Ainun Nahar , M. Shamim Hossain , M.A. Bari , M. Rahman and M.E. Haque
  Present study assayed the toxicity effect of ethanolic leaf and seed extract of Cassia alata and found promising activity. From the probit transformation of resulting mortality data we got LC50 values of 4.31 ppm (μg mL-1) for seed and 5.29 ppm for leaf extract. Seed extract explored potent cytotoxicity similar to the standard gallic acid (LC50 = 4.53 ppm). From the antibacterial and MIC data it was evident that seed extract gave least activity against the tested bacteria whereas leaf extract deserved promising antibacterial activity.
  M.O. Faruq , M.S. Alam , M. Rahman , M.S. Alam and A.F.M. Sharfudddin
  The experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh during November, 2000 to August 2001 to determine optimum planting time on growth, yield and storage performance of onion. Three dates of planting viz., November 22, December 7 and 22 and, two storage conditions viz., inside sand and open on bamboo platform. The planting time had significant effect on growth, yield components, yield and also storage parameter studied. The November 22 planting produced the highest yield (25 t ha-1) by increasing leaf number per plant(11.73), bulb diameter (5.31cm), fresh weight of bulb(59.60g) and dry matter content of bulb(13.44%). In the three planting times, the rotting percentage was higher (15.51, 8.66 and 8.34 respectively) under inside sand storage. The highest weight loss (29.21%) and sprouting (1.98%) were obtained by November 22 planting with open storage on bamboo platform.
  M.F.R. Khan , M.B. Rahman , M.S.R. Khan , K.H.M.N.H. Nazir and M. Rahman
  Antibiogram study and plasmid profile analyses were conducted to find out the correlation of the recently isolated Salmonella organisms of Bangladesh. Antibiogram study revealed that the isolates were highly sensitive to Ciprofloxacin, Cephalexin and Kanamycin. In the plasmid profile analysis it was observed that out of 4 isolates of Mymensingh district (M1 to M4), 3 isolates showed 3 plasmid bands in each and 1 isolate showed 4 plasmid bands. The estimated size of the plasmid bands of M1, M2, M3 and M4 were (33.5, 24.50, 4.0, 3.0); (33.5, 3.0, 1.0); (33.5, 3.0, 1.0) and (5.0, 4.0, 1.8) kb, respectively. On the other hand among the isolates of Feni district (F1 to F9), 6 isolates (F4, F5, F6, F7, F8 and F9) showed 5 number of plasmid bands in each and the estimated plasmid band size were same (33.5, 5.0, 4.0, 2.0, 1.8). The plasmid bands of other 3 isolates (F1, F2 and F 3) were found to be different and the estimated size were recorded as 4 (33.5, 5.0, 1.6, 1.5); 3 (33.5, 1.6, 1.5) and 1 (0.7), respectively. Among the isolates of Dhaka district (D1 to D11); no plasmid band was found to be detected in 3 isolates (D2, D5 and D6). The number of plasmid bands of other isolates of D1, D3, D4, D7, D8, D9, D10 and D11 were 4 and the estimated size were determined as (33.5, 15.0, 2.0, 1.0); 5 (33.5, 15.0, 3.0, 2.0, 1.0); 5 (33.5, 5.0, 4.0, 1.8, 1.3); 3 (33.5, 3.0, 1.0); 3 (33.5, 3.0, 1.0); 1(33.5); 2 (33.5, 3.0) and 2 (33.5, 4.0) kb, respectively. All these isolates were tested for antibiotic sensitivity against 8 commonly used antibiotics belonging to different groups. From the antibiogram study it was revealed that all the isolates of Mymensingh and Dhaka district were 100% resistant to Cloxacillin and among the isolates of Feni district 100% were resistant to Erythromycin and Cloxacillin. Plasmid profile analysis of the isolated Salmonella organisms revealed that the isolates carrying multiple plasmids which might be the cause of various degree of antibiotic resistance.
  M.E. Haque , M. Rahman , M.A. Rahman , A.K. Roy and B. Sikdar
  Institute of Biological Science, University of Rajshahl, Rajshahi 6205, Bangladesh Department of Genetics and Breeding, University of Rajshahi, Rajshahi 6205, Bangladesh Fruit Research Station, BARI, Binodpur, Rajshahi, Bangladesh. A field experiment on lablab bean based intercropping system was conducted at the Botanical Garden of Rajshahi University during the winter of 1999-2000 and 2000-2001. The experiment was conducted in with sole lablab bean and other crops as like as lettuce and spinach and their intercropping combinations. The yield and yield components of lablab bean were influenced by intercrops and the lablab bean JessoreI/lettuce intercropping in 1:1 ratio gave the highest monetary return and land equivalent ratio (LER) of 2.00. The yield advantage was more in intercropping than all sole cropping systems, except when it was intercropped with spinach.
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