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Articles by M.M. Rashid
Total Records ( 5 ) for M.M. Rashid
  M.M. Rashid , M.A. Hoque , K.S. Huque and A.K.F.H. Bhuiyan
  The objective was to evaluate the effects of genotype×environment interaction on growth traits of Brahman crossbred cattle. The animals were reared in two environments viz., Central Cattle Breeding Station (on-station) and farmer’s herd (on-farm) where management system was respectively intensive and semi-intensive in nature. Birth weight was very similar across environments. Average body weight at different ages was greater in on-station herd than in on-farm herd (p<0.01). Body weight was 23.0, 25.4, 41.5 and 27.5 kg greater at 6, 9, 12 and 18 month in on-station herd than in the on-farm herd, respectively. Significant interaction between sire×environment in most of the growth traits (p<0.001) was observed. Heritability estimates for growth traits were greater in on-station herd (ranged from 0.29-0.47) than in on-farm herd (ranged from 0.48-0.50). Genetic correlations of the same growth trait between two environments showed a decreasing tendency with the increase in age of animal (from 0.74±0.05 at 3 months to 0.57±0.05 at 24 months). These results demonstrate that effects of G×E in Brahman crossbred cattle are large between two types of management system indicating that breeding bull selection and use should be carried out within environment basis.
  M.M. Rashid , Hizbullah , Noor Mohammad and M. Jakir H Khan
  In this study, an advanced control technique for substrate feed rate regulation of fed batch fermentation is developed. It is reliable in dealing with possible variations in the process condition. In this study, neural network and fuzzy logic methods are used in the design. As a case study, the baker’s yeast production process is chosen to test these controllers. The evaluation of the performance of the designed controllers is carried out through computer simulation. To obtain a reliable assessment, the results are then compared with those of the PI controller. The results have shown that the proposed approaches can be successfully applied to regulate of fed-batch fermentation to improve the operation of such processes.
  M.M. Rashid , M.A. Hussain and N. Abd. Rahim
  The MR damper is a control device that consists of a hydraulic cylinder filled with magnetically polarizable particles suspended in a liquid. MR dampers dissipate vibration by absorbing energy. Magnetorheological (MR) fluids dampers are very effective to control vibration, which use MR fluids to produce controllable damping force and provide both the reliability of passive systems and the facility of active control systems with small power supply. Due to their mechanical simplicity, high dynamic range, low power requirements, large force capacity and robustness, offer an attractive means of vibration protection. The objective of this study are understanding the characteristics of the MR damper to provide effective damping for the purpose of suspension isolation or suppression car body. In this study, fuzzy logic controller is used to control semiactive car suspension system.
  M.M. Rashid
  Curvularia species causing black kernel of rice have been tested in 150 samples of three varieties of boro rice seed. Five species of Curvularia, viz. Curvularia geniculata, Curvularia oryzae, Curvularia lunata, Curvularia eragrostidis and Curvularia intermedia have been detected. The seed infection was higher in case of Curvularia lunata (5.5 %) than other species. Species were detected by studying the growth habit of fungus on seeds, shape, diagnostic characters and appearance of conidia under compound microscope.
  M.M. Rashid , M. Mofazzel Hossain , M.Z. Alam , M. Ibrahim and M.K.A. Bhuiyan
  Experiments on seasonal abundance of spiraling whitefly, Aleurodicus dispersus on guava and its control were conducted. The seasonal distribution of spiraling whitefly indicated that winter months December, January and February were major peak period of infestation. Adult whitefly started to infest the guava plants in September and increased to maximum in January. Whitefly infestation decreased to zero from April and continued to August. The change in the level of infestation was due to difference in environmental temperature and rainfall. Field trials were conducted to test the efficacy of some common insecticides against the whitefly. Although all the chemicals reduced the population of different stages of whitefly, the overall effect was found to be better with systemic insecticides. Dimethoate was found most effective in controlling spiralling whitefly of guava followed by spray treatment with, phosphamidon, cypermethrin, malathinon. Diclorvos was comparatively less effective insecticide. Study on biological control of whitefly showed that a coccinelid predator Axinocymnus puttarudriahi Kapur and Manshi (Coleoptera: Coccinellidae) was effective in controling the whitefly without associated ant.
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