فهرست مطالب md. hasan

Sugar apple is an underutilized minor and non-traditional nutritious fruit in the southern regions of Bangladesh. The target of this study was to evaluate the morphological, biochemical, and mineral traits of sugar apple genotypes for selecting superior genotypes. Three sugar apple genotypes were used for this study and it was conducted following a randomized complete block design with three replicates. Results indicated that significant differences existed among the sugar apple genotypes. The highest fruit length (9.25 cm), fruit width (9.63 cm), fresh fruit weight (149 g), ripe fruit weight (137.80 g), pulp weight (91.00 g), peel weight (32.25 g), edible portion (66.08%), the number of seeds per fruit (50.25), seed length (12.94 mm), seed width (8.69 mm), seed fresh weight (14.50 g fruit-1), seeded pulp (76.59%), dry matter content (30.01%), pH (5.50), ascorbic acid (36.28 mg 100g-1), P (117.63 mg 100 g-1 DW), S (542.09 mg 100 g-1 DW), and Fe (6.21 mg 100 g-1 DW) were obtained in the G3 genotype compared to other genotypes. On the other hand, G1 showed the highest amount of fruit peel (29.94%), moisture content (73.54%), and non-reducing sugar (5.36%). Genotype G2 showed maximum values regarding total soluble solids (25.50%), total sugar (20.06%), reducing sugar (15.36%), Ca (359.60 mg 100 g-1 DW), and Mg (326.95 mg 100 g-1 DW) contents. It can be summarized that genotype G3 exhibited superior performance in morphological and biochemical properties of fruits and the majority of mineral contents.

The purpose of this study is to determine how the Bangladeshi garment industry's sewing defect reduction and productivity enhancement are affected by the Plan, Do, Check, Act (PDCA) and 5S (Sort, Set in order, Shine, Standardize, Sustain) techniques. One of the main reasons for production delays and increased costs is sewing defects. By reducing defects, improving  Overall Equipment Effectiveness (OEE), and methodically using integrated PDCA concepts, the study aims to streamline and expand the production flowline while increasing throughput. To continuously evaluate and improve the sewing process, the 5S method is also employed. Tools like cause-effect diagrams and Pareto charts were used to identify the defect correctly. The OEE was used to evaluate the actual efficiency. The integration of 5S and PDCA as a lean methodology was utilized to minimize the defect rate and maximize quality to improve efficiency. For this purpose, data was collected from some renowned factories in Bangladesh. This mixed-integrated methodology is used in the study to integrate quantitative defect analysis with worker satisfaction along with efficiency surveys. The findings should offer valuable insights to the RMG industry in Bangladesh, as producers seek sustainable methods to increase productivity and enhance product quality while mitigating the impact of sewing errors on their production procedures. OEE was increased by almost 3-4% through this research.

Escherichia coli associated infections are major threats in poultry industry owing to severe economic losses each year. This study was conducted to identify E. coli isolates, to evaluate their antibiotic sensitivity and to find out their virulence patterns from infected broilers of Sylhet city in Bangladesh. Using polymerase chain reaction, a total 20 isolates were identified as E. coli from 11 chickens, exhibiting symptoms like colibacillosis and/or diarrhea. All isolates were positive for type-1 fimbrial adhesion (fimH), followed by putative avian hemolysin (hlyF) in 17 isolates; while none of the isolates was amplified with intimin (eaeA). Among 10 tested antibiotics, 100% of the isolates (n = 20) showed resistance to ampicillin, amoxicillin and tetra-cycline; but they were 100% sensitive to gentamicin. Organ specific correlations of antibiotic sensitivity were obtained among the isolates through principal component analysis (PCA) and Agglomerative Hierarchical Clustering (AHC). The 16S rRNA data of two multi-drug resistant isolates revealed closed clustering with clinical E. coli strains which could be indication of their zoonotic potential. In conclusion, the results depict higher prevalence of fimH and hlyF genes and drug resistance patterns of E. coli isolates from broilers in Sylhet city of Bangladesh.