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( Muralitharan ),( Gangatharan ),( Nooruddin Thajuddin ) 한국미생물 · 생명공학회 2008 Journal of microbiology and biotechnology Vol.18 No.1
Self-splicing group I introns in tRNA anticodon loops have been found in diverse groups of bacteria. In this work, we identified tRNA(fMet) group I introns in six strains of marine Synechococcus elongatus. Introns with sizes around 280 bp were consistently obtained in all the strains tested. In a phylogenetic analysis using the nucleotide sequence determined in this study with other cyanobacterial Trna(fMet) and tRNA(Leu) intron sequences, the Synechococcus sequence was grouped together with the sequences from other unicellular cyanobacterial strains. Interestingly, the phylogenetic tree inferred from the intronic sequences clearly separates the different tRNA introns, suggesting that each family has its own evolutionary history.
Epidemiological study of pulmonary Lesions and diseases in slaughter cattle
( AKMA Rahman ),( M Nooruddin ),( N Begum ),( MS Rahman ),( John Hwa Lee ) 한국가축위생학회 2003 韓國家畜衛生學會誌 Vol.26 No.1
A cross-sectional epidemiological study using a multistage sampling strategy in slaughter cattle in Mymensingh, Bangladesh was conducted during September 2001 to April 2002 to study distributions and risk factors of specific pulmonary lesions and diseases. The pulmonary lesions and diseases were diagnosed on the basis of macroscopic and microscopic pathological and parasitological findings. The frequency distribution of pulmonary lesions and diseases in slaughter cattle was found to vary among categories of the study variables. The risk factors identified on statistical basis were male cattle and <3 years old cattle and summer in congestion, slightly thin physical condition and summer season in pulmonary emphysema, slightly thin physical condition in parasitic bronchitis as well as female cattle, autumn and rainy seasons in pulmonary hydatidosis. The population impact and etiologic significance of summer season on pulmonary congestion and emphysema was more important than that of adult male cattle. The population impact and etiologic significance of autumn season on pulmonary hydatidosis was more important than that of female cattle during rainy season. Population impact of slightly thin cattle on parasitic bronchitis was poor.
Pulmonary diseases in slaughtered cattle 4. Pathology of pulmonary lesions
Rahman Akm Anisur,Nooruddin Md,Hossain M Mokbul,Rahman M Siddiqur,Hossain Mohammad Arif,Song Hee-Jong The Korean Society of Veterinary Service 2006 韓國家畜衛生學會誌 Vol.29 No.4
A study of pulmonary diseases in the slaughtered cattle (n = 125) of Mymensingh town was conducted to study pathological findings using the standard methods from September 2001 through April 2002. The pulmonary lesions observed in this study included congestion, emphysema, anthracosis, pleuritis abscess and hemorrhage. The histopathological findings of congestion were characterized by hemorrhage, a large number of leukocytes infiltration in the lumen of the alveoli, bronchitis, bronchiolitis, proliferation of fibrous connective tissue and hyperplasia of bronchiolar epithelia. Histopathologically, emphysema was identified by the distended alveoli with thin and atrophied alveolar walls. In anthracosis, carbon particles were found in stroma and alveolar lumen. In pleuritic lesions, there was a proliferation of fibrous connective tissue along with the infiltration of mononuclear reactive cells. Abscesses were characteristic of the accumulation of neutrophils surrounded by immature fibroblasts forming a capsule like structure.
Short Communication : Pulmonary diseases in slaughtered cattle 4. Pathology of pulmonary Lesions
( AKM Anisur Rahman ),( Md Nooruddin ),( M Mokbul Hossain ),( Mohammad Arif Hossain ),( Hee Jong Song ),( M Siddiqur Rahman ) 한국가축위생학회 2006 韓國家畜衛生學會誌 Vol.29 No.4
A study of pulmonary diseases in the slaughtered cattle(n=125) of Mymensingh town was conducted to study pathological findings using the standard methods from September 2001 through April 2002. The pulmonary lesions observed in this study included congestion, emphysema, anthracosis, pleuritis abscess and hemorrhage. The histopathological findings of congestion were characterized by hemorrhage, a large number of leukocytes infiltration in the lumen of the alveoli, bronchitis, bronchiolitis, proliferation of fibrous connective tissue and hyperplasia of bronchiolar epithelia. Histopathologically, emphysema was identified by the distended alveoli with thin and atrophied alveolar walls. In anthracosis, carbon particles were found in stroma and alveolar lumen. In pleuritic lesions, there was a proliferation of fibrous connective tissue along with the infiltration of mononuclear reactive cells. Abscesses were characteristic of the accumulation of neutrophils surrounded by immature fibroblasts forming a capsule like structure.
Prevalence and risk factors of helminth infections in cattle of Bangladesh
( AKMA Rahman ),( N Begum ),( M Nooruddin ),( Md Siddiqur Rahman ),( MA Hossain ),( Hee Jong Song ) 한국가축위생학회 2009 韓國家畜衛生學會誌 Vol.32 No.3
A cross-sectional survey was undertaken to identify risk factors and clinical signs associated with parasitic helminth infections of cattle in Mymensignh district of Bangladesh. A non-random convenience sampling method was used to select 138 animals from 40 farmers/herds. The eggs per gram of faeces (epg) for nematodes and trematodes were determined by McMaster and Stoll`s methods respectively. Animal-level and herd-level data were recorded by means of a questionnaire. Multicollinearity amongst explanatory variables were assessed using 2×2 X2 test and one variable in a pair was dropped if P?0.05 for multiple logistic regression models. Association study between outcomdels. explanatory variables was conducted using classification tree, random forests and multiple logistic regression. A positive epg was considered as infected. Analyses were performed using STATA(R), version 8.0/Intercrmled and R(R), Version 2.3.0. Seventy eight percent (78%) of the cattle were found to be infected with at least one type of helminth. Twenty four (24) pairs of combinations of explanatory variables showed significant associations. Mon animals (OR=3. inp=.006, 95% CI=1.4, 7.7) were associated with significantly increasednpssion modeof nematode infection. Female cattle of the study area are mostly cross-breed, kept indrme, fe. elatively good diet and not used for draught purpose. Mon s are used for draught purpose thereby more exposed to nematode infective stage and provided with Aelatively prme diet. So stressed male cattle may become more susceptible to nematode infection. All of the three statistical techniques selected gender and rumen motility as most important variables in association with nematode infection in cattle. The result of this survey can only be extrapolated to the periurban cattle population of traditional management system.