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Articles by M.J. Islam
Total Records ( 9 ) for M.J. Islam
  A. Mannan , J. Kawser , A.M.A. Ahmed , Mohd. Omar Faruk Sikder , M.J. Islam and M.A. Chowdhury
  Beta thalassemia is an inherited autosomal recessive blood disease. In beta thalassemia and hemoglobinopathies, the genetic defect which could be either mutations or deletion results in reduced rate of synthesis or no synthesis of one of the globin chains that make up haemoglobin. Reduced synthesis or no synthesis of one of the globin chains can cause the formation of abnormal haemoglobin molecules, thus causing anemia, the characteristic presenting symptom of the thalassemia. The present study was undertaken with objective to study the occurrence and socio-demographic profile of hemoglobinopathies cases of Chittagong city. It may provide accurate data of population frequency that are necessary for the planning of control thalassemia in the highly populated eastern part of Bangladesh. This is a hospital record based prospected study that was carried out in two different General hospitals in Chittagong town where both hospitalized as well as out patients were included. The study was carried out from November 2011 to April 2012. A total of 485 suspected patients who were admitted in the hospitals were included in this study. Data was collected and then studied and analyzed properly. Analysis was done by employing Statistical Package for Social Science (SPSS Version 10.0) software package. Here the difference of male and female patients was found statistically insignificant (p>0.05). It was observed that, the onset of hemoglobinopathies was significantly high at neonatal to childhood period <1-10 years and the percentage was 51.70% (p<0.05). Here, the prevalence of HBE β Thalassemia patients (38.65%) was found the highest in percentage.
  M.J. Islam , Shah Md. Helal Uddin , M.W. Zaman , R.I. Mahmood and M.S. Rahman
  A study was conducted to evaluate the water quality at Matiranga Upazilla under Khagrachari Hill District of Bangladesh. pH values (6.72-7.54) indicated that groundwater was slightly acidic to neutral. Ca (0.4-6.90 mg L-1) Mg (0.55-6.60 mg L-1), Na (4.00-44.00 mg L-1), K (4.75-13.50 mg L-1), HCO3 (0.15-1.20 me L-1 ) and CI (0.30-1.60 me L-1) were predominant along with Zn, Mn and P in lesser amounts. Fe, Cu, As, B and SO4 were found trace to very little amounts. Total dissolved solids (TDS) and sodium adsorption ratio (SAR) values were 35-200 mg L-1 and 0.36-3.40 respectively and indicated that all water were under freshwater’ and excellent’ class respectively. In terms of soluble sodium percentage (SSP), most water was doubtful. SAR (0.36-3.40) and EC (52-300 μS cm-1) values classified the water as CI-SI except one as C2-S1. All water was under the category of soft regarding hardness with ‘suitable’ RSC. Based on As, Fe, Mn, Zn, SO4, NO3 and CI all water was within the safe limit for drinking except 3 samples for Mn and one for As.
  M.J. Islam , A.K.M.M. Hossain , F. Khanam , U.K. Majumder , M.M. Rahman and M. Saifur Rahman
  To study the effect of mulching and fertilizer management practices on the growth and yield of garlic, an experiment was conducted using three kinds of mulches viz., black polyethylene, straw and water-hyacinth with a control and three types of fertilizer management practices viz., cow dung (F1), urea + TSP + MP (F2) and urea + TSP + MP + cow dung (F3) were compared with no fertilizer/manure. Plants grown under black polyethylene, water hyacinth and straw mulches were produced the yields of 5.80, 5.70 and 5.48 t ha-1, respectively which were 39, 36.6 and 31.41% higher than the control (4.17 t ha-1). The effect of black polyethylene and water hyacinth mulch were almost similar on the growth and yield of garlic. On the other hand, the crops growing with urea + TSP + MP and urea + TSP + MP + cow dung and only cow dung gave yields of 6.36, 6.03 and 5.23 t ha-1, respectively which showed about 80.68, 71.30 and 48.57% increased over the control (3.52 t ha-1). The interaction effects of mulching and fertilizers did not exhibit significant variations. Though the application of black polyethylene mulch is somewhat hazardous, if it is possible to use the water hyacinth and black polyethylene mulch along with F2 and F3 were suitable for increasing production.
  B. Roy , M.R. Alam , Bikash C. Sarker , M.S. Rahman , M.J. Islam , M.A. Hakim and R.I. Mahmood
  An experiment was conducted on naturally occurring growth substances in aqueous extracts of some common weeds viz., Bathua (Chenopodium album), Bhijli ghas (Striga densiflora), Shetdrone (Leucus aspera), Mutha (Cyperus rotundus ), Chapra (Eleusine indica) and Khude Anguli (Digitaria ischaemum) with the attempt for chemical investigation on effective extracts. Boiled and unboiled extracts of all the weed species under test significantly reduced and delayed germination of wheat and jute seeds compared with control. The highest germination (96 and 85.3%) and maximum growth of wheat and jute were observed in seeds treated with control. The effect of boiled and unboiled extracts of Bathua (Chenopodium album) showed the lowest germination in seeds of wheat. The root and shoot length of wheat and jute were also decreased in presence of the weed extracts. The thin layer chromatography (TLC) examination of crude extract of Khude Anguli (Digitaria ischaemum) showed four separate compound at hex: ethyl acetate (20:1, v/v) and the crude extract of Bathua (Chenopodium album) showed three separate component at hex: ethyl acetate (10:1, v/v).
  M.J. Islam , M.G. Rasul , M.A. Kashem , M.M. Hossain , A.A. Liza , M.A. Sayeed and M. Motaher Hossain
  Studies were conducted to investigate impacts of oxytetracycline on Barbonymus gonionotus muscle. Oxytetracycline the most widely used antibiotics, was fed to Barbonymus gonionotus with 4 g kg–1 rate through diet for 45 days. Growth rate was observed for different concentrations of oxytetracycline. Water quality parameters and bacterial quantification were observed for a period of 21 days. Pond water, sediment and fish muscle were tested before and after oxytetracycline medicated feeding. Before feeding of oxytetracycline medicated feed, there was no oxytetracycline in water, sediment and fish muscles. After 2 days of feeding the initial oxytetracycline accumulation was 5070.0 ppb, which reduced considerably to 1190.0 ppb after 20 days from end of medicated diet feeding and not detected after 42 days. Physico-chemical parameters of pond water were determined. Before treatment dissolve oxygen, pH and total hardness of fish pond was 4.516±0.25 mg L–1, 7.413±0.09 and 822.33±1.52 ppm, respectively. After 21 days of study period, reached to 5.27±0.025 mg L–1, 7.773±0.04 and 769.66±2.08 ppm. It indicates a little change after 21 days. Before oxytetracycline treatment, bacterial load in Barbonymus gonionotus pond was 9.417±0.035×103 CFU g–1 in water, 7.31±0.04×107 CFU g–1 in sediment, 6.51±0.04×06 CFU g–1 in fish gills and 8.52±0.035×107 CFU g–1 in fish intestine, which was significantly reduced to 5.28±0.02×103 CFU g–1 in water, 2.91±0.02×107 CFU g–1 in sediment, 2.21±0.02×106 CFU g–1 in gills and 2.39±0.02×107 CFU g–1 in intestine.
  Mst. Nahida Laiju , M.J. Islam , M. Hasanuzzaman , M.A.S. Mondol and G. Kabir
  Patterns of morphological variation in Hordeum species were determined by metroglyph analysis which revealed apparently four clusters comprising more than one line out of 15 studied. Cluster I was comprised of Centinella and Conquest of H. vulgare. Cluster II was comprised of single line of H. nudum and four lines (API-19, BEL-34, BEL-72 and BTON-10) of H. vulgare. Cluster III and IV were consisted of BEL-4, BTYN-8 and BTYN-37 and BEL-16, BHV-1, BHV-91, BHV-95 and BHV-105 of H. vulgare respectively. These clusters showed distinct graduation for breadth of flag leaves i.e., low (cluster I), relatively low (cluster III), intermediate (cluster II) and high (cluster IV). The ray`s pattern for 11 morphological characters on the glyph among the clusters revealed a marked variation for the presence or absence of rays.
  M.J. Islam , Shah Md. Helal Uddin , Saiful Huda , M.S. Rahman , M.F. Hossain and Mst. Nahida Laiju
  A study was conducted to evaluate the pond and well water quality at Matiranga Upazilla under very remote areas of Khagrachari Hill District of Bangladesh. The chemical analyses of water included pH, EC, total cations (Ca++, Mg++, Na+, K+, Zn++, Cu++, Mn++, Fe+++, As+++, P+5 and B+3), total anions (CO3--, HCO3- SO4--, NO3- Cl-, TDS, SAR, SSP, RSC and hardness (HT). pH values (6.01-7.17) indicated that the waters were slightly acidic to neutral. Waters contained Ca++, Mg++, Na+, K+, HCO3- and Cl- predominantly along with Zn++, P+5 and B+3 in lesser amounts. Mn++, Cu++ and Fe+++ were found trace to very little amount. As+3 and SO4-- were found trace. TDS and SAR values indicated that all water were under "freshwater" and "excellent" class respectively. SSP of most waters were under "good" "permissible" and "doubtful" class. SAR and EC categorized the waters as C1-S1. All waters were found under "soft" class regarding hardness with "suitable" RSC. Based on As+3, Fe+3, Mn++, Zn++, SO4--, NO3- and Cl- all waters were within the "safe" limit for drinking.

  M.J. Islam , G. Mowla , M.S. Islam and P.B. Leeds-Harrison
  In this model, firstly a simple conceptual model of water losses in rice field has been developed and quantified in spreadsheet form. Second, this model is used to simulate what would happen under three scenarios such as continuous ponding with soil management (filling and sealing of visual cracks by intercultural operation) "Case 1"; irrigation with intermittent drying and without soil management "Case 2"; and irrigation with intermittent drying and with soil management "Case 3". In Case 2 and Case 3 water is allowed to fall until water is no longer ponded at the surface and the soil dries and starts to crack. Third, conclusions have been drawn as to the consequences of not irrigating according to a schedule dictated by crack development. From this study it is observed that the total amount of water required for rice production is directly related to the nature of water and soil management practices to reduce crack during irrigation. The model reveals that irrigation in situations where cracks form should be applied before they reach the critical limit (3 mm wide), otherwise all the applied water may lost as bypass flow if the other conditions are favourable, so leading to crop failure. The study indicates the importance of soil management during irrigation to increase water use efficiency by reducing crack. Finally, it can be concluded that influence of cracking should be considered to develop an irrigation scheduling of this puddled soil.
  M.J. Islam , S.S. Parul , M.A. Rashid and M.S. Islam
  A study of infiltration and bypass flow was conducted in a wet soil bin with three different soils treatments (sandy loam, clay loam and clay soil) to determine the swelling behaviour of cracking puddled soils by watering and its impact on bypass flow. Infiltration rate for the soils was recorded after puddling the soils. Then the puddled soils were allowed to dry for a period of up to 15 days. After that the plots were rewetted in order to observe the swelling and bypass behaviour of cracked soils. From this study it is observed that the infiltration rates of puddled soils were very low (0.03-0.05 mm h-1) mainly due to the puddling effect. The study indicates that cracks on puddled soils at 15th day’s of drying are effectively irreversible. The maximum bypass flow was recorded for the clay loam soil. During the first day, the flow rate was extremely high at 313 mm h-1. But this higher rate gradually reduced from the second day and onwards. The bypass flow rate for the clay loam and clay soil was almost same. The study reveals that it is not possible to swell up shrinkage cracks on puddled soils by watering alone. Re-working of the soil is necessary to seal the cracks.
 
 
 
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