Md Khairul Alam

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This study was conducted to know cropping cycles required to improve OM status in soil and to investigate the effects of medium-term tillage practices on soil properties and crop yields in Grey Terrace soil of Bangladesh under wheat-mungbean-T. aman cropping system. Four different tillage practices, namely, zero tillage (ZT), minimum tillage (MT),(More)
Twelve different liquid market milks of Bangladesh were examined to evaluate their chemical and sanitary quality. Six of these were open raw milk bought from local daily markets and the other six were processed packet milk (both pasteurized and UHT [Ultra High Temperature] processed) available in shops. The twelve samples were examined for the determination(More)
Field experiment on Tomato-Okra-Indian spinach cropping pattern was conducted at a farmer’s homestead of Tangail (AEZ 8) during 2007-08 and 2008-09 to find out a suitable combination of chemical fertilizers and organic manure for sustainable crop yield. There were 5 treatments comprising different percentages of the recommended chemical fertilizers (RCF)(More)
Plants respond to heavy metal stress by metal complexation process like production of phytochelations or by other metal chelating peptides. In this paper we report the synthesis of silver nanoparticles (AgNPs) from the room dried stem and root of Ocimum sanctum. The broth of the plant is used as a reducing agent for the synthesis of Ag nanoparticles at room(More)
The natural regeneration of the tree species in pure natural forest stand and enrichment plantations of Baraitali Forest of Chittagong (South) Forest Division, Bangladesh was studied by stratified random quadrat method during April 2002 to November 2002. Totally 100 plots of 3 m × 3 m in size represents a total of 64 regenerating tree species from natural(More)
The shrimp sector is the second largest export earner for Bangladesh, which is a major contributor in the national economy of Bangladesh. It also provides millions of employment. Every year a huge amount of shrimps are rejected to export due to its pathogenic bacterial contamination. A comparative study regarding prevalence and antimicrobial susceptibility(More)
A comparative study regarding prevalence and antimicrobial susceptibility of Vibrio species in the black tiger shrimp (Penaeus monodon Fabricius) culture environment as well as market samples were analyzed. Total Vibrio counts were found to range up to 2.5 × 10 cfu/gm and 60 cfu/gm in shrimp and Gher water samples, respectively. Results revealed that the(More)
The giant fresh water prawn, Macrobrachium rosenbergii (de Man), a leading export item of Bangladesh was studied in terms of pathogenic bacteria, pesticide residues and metal contents. In microbiological analysis, total viable bacteria, total coliform, total faecal coliform, total Salmonella and total Vibrio count were ranged from 6.8 × 10 to 1.6 × 10, 1.5(More)
A numerical and experimental study has been carried out for a rotary, periodic flow energy recovery ventilator containing a porous media matrix. The governing differential equations for heat transfer have been solved using an upwind integral-based method. The influence of the matrix material characteristics on the effectiveness and performance of the energy(More)
Currently the need for various developmental models in material sciences to develop green technologies has been reemphasized. For biodiversity rich countries like India, low investment and sustainability of biological synthesis adds to its attraction. Plants respond to heavy metal stress by metal complexation process like production of phyochelations or by(More)
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