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RISS 인기검색어
- 검색키워드
- 저자 : M. Bashir Uddin (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Low frequency stability study of a three-phase induction motor
M. Bashir Uddin,Md. Nuruzzaman Pramanik,Sheikh Abu Reza 전력전자학회 2007 ICPE(ISPE)논문집 Vol.- No.-
A suitable volt/㎐ control strategy is proposed for stability improvement in low frequency operation of induction motors fed from variable voltage and variable frequency supply. The analysis is based on small scale perturbation method applied to the linearized model of state-space equations. Stability analyses are carried out through evaluation of eigen values of the linear model characteristic equation. Stability investigation shows that the simultaneous adjustment of stator voltage and frequency provides a convenient means for maintaining stability of induction motor. The results are verified by standard transient analysis method and demonstrate a very close agreement.
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Serological prevalence of brucellosis of cattle in selected dairy farms in Bangladesh
Hassan, Abdullah Al,Uddin, M. Bashir,Islam, Md. Rafiqul,Cho, Ho-Seong,Hossain, Md. Mukter The Korean Society of Veterinary Science 2014 大韓獸醫學會誌 Vol.54 No.4
This study was conducted to investigate the status of brucellosis in dairy cattle from five selected dairy farms in the Mohammadpur Beribadh area of Bangladesh. A cross-sectional study was carried out from October 2010 to March 2011 in which a total of 334 serum samples from cattle in five herds were screened by the Rose-Bengal plate-agglutination test (RBPT) and the positives were confirmed using an indirect enzyme-linked immunosorbent assay (I-ELISA). A structured questionnaire was used to collect epidemiological information describing the animals. Overall, 4.20% of the animals were RBPT positive, while subsequent confirmatory tests with I-ELISA revealed that the overall animal-level prevalence derived from the samples was 1.20%. Additionally, the prevalence was relatively higher in females than in males. A significant association was found between abortion, age of the animals, and the occurrence of brucellosis (p < 0.05). Considering the overall low prevalence of brucellosis in the selected farms in the present study, a brucellosis eradication program for dairy farms using a test-and-slaughter policy would be possible.
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