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Articles by Z. Islam
Total Records ( 3 ) for Z. Islam
  M. Jawed , Syed M. Shahid and Z. Islam
  This study was carried out to evaluate the possible protective role of some serum factors like pH and adequate level of calcium, phosphate and fluoride in dental caries. A total of 100 subjects of either sex, aged 10-40 were selected. Decayed, Missed and Filled Teeth (DMFT) were used as indices for scoring the dental caries and were distributed into 4 groups on the basis of DMFT indices as 4-8 (Group I), 9-16 (Group II), 17-24 (Group III) and more than 25 (Group IV), while the control subjects had DMFT index equal to or less than 3. Serum was collected and pH, calcium, phosphate, fluoride and lactic acid were analyzed. Patients of dental caries showed significantly decreased levels of calcium, phosphate, fluoride (p<0.001) and significantly increased level of lactic acid (p<0.001) were observed in Groups I, II, III and IV as compared to controls. Among groups prominent significant changes were observed in Group IV. This study did not show any significant change in serum pH with the progression of disease. From the findings of present study, it can be concluded that the adequate level of calcium, phosphate and fluoride is responsible for the significant deposition of these minerals in plaque which greatly reduces the developmental caries in the adjacent enamel.
  M.K. Alam , Z. Islam , M.A.Rouf , M.S. Alam and H.P. Mondal
  A field experiment was conducted at the Hill Agricultural Research Station, Khagrachari to find out a suitable planting material and mulch material for turmeric production in the hill slope of Chittagong Hill Tracts. Nine treatment combinations comprising 3 levels of planting material (mother rhizome, primary finger and secondary finger) and 3 levels of mulching (rice straw, sungrass and non-mulched) were compared. Mother rhizome showed better yield performance. Sungrass appeared the best mulching material for producing higher turmeric yield. Mother rhizome coupled with sungrass mulching gave significantly higher yields (387.6 g clump-1 and 29.4 t ha-1) of turmeric in hilly region of Bangladesh.
  B. K. Saha , M.Y. Ali , M. Chakraborty , Z. Islam and A. K. Hira
  The experiment was conducted to judge the feasibility of hydrogen peroxide as milk preservation. The experiment milk sample collected from Bangladesh Agricultural University Dairy Farm and were divided into seven portions. Six portions were preserved with 0.01, 0.02, 0.03, 0.04, 0.05 and 0.06% H2O2. The reaming portion was preserved without H2O2 and considered as control sample. Some physical and chemical parameters were measured from all samples just before preservation and then regularly after certain time interval up to spoilage. From the results of physical and chemical tests, it was observed that keeping quality of milk samples with H2O2 increased significantly when compared with untreated milk samples. It was concluded that 0.04 to 0.05% H2O2 is enough to preserve milk sample up to 24 hours.
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