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가금(家禽)과 포유가축(哺乳家畜) 적혈구(赤血球)의 삼투적(參透的) 취약성(脆弱性)의 비교(比較)
민병만,김환균,김성열,구찬회,Min, Byeong-man,Kim, Hwan-gyun,Kim, Seong-rhyul,Koo, Chan-hoei 대한수의학회 1992 大韓獸醫學會誌 Vol.32 No.3
The study was attempted to scrutinize the normal osmotic fragility of erythrocytes in domestic poultry such as chicken, quail and duck, making a comparison with that in domestic mammalia such as dog and pig. Osmotic fragility of erythrocytes was determined on blood samples from 10 healthy adult animals in each species. Optical initial hemolysis of erythrocytes occurred at $0.395{\pm}0.03%$ NaCl for chicken, $0.410{\pm}0.03%$ for duck, $0.440{\pm}0.02%$ for quail, $0.470{\pm}0.05%$ for dog and $0.560{\pm}0.03%$ for pig. Optical complete hemolysis of erythrocytes occurred at $0.270{\pm}0.02%$ NaCl for chicken, $0.305{\pm}0.03%$ for duck, $0.360{\pm}0.02%$ for quail, $0.370{\pm}0.03%$ for dog and $0.455{\pm}0.03%$ for pig. In other words, erythrocytes of poultry have stronger resistance to osmotic lysis than those of mammalia, showing the strongest resistance in chicken among the tested poultry.
가금(家禽)과 포유가축(哺乳家畜) 적혈구(赤血球)의 삼투적(渗透的) 취약성(脆弱性)의 비교(比較)
민병만 ( Byeong Man Min ),김환균 ( Hwan Gyun Kim ),김성렬 ( Seong Rhyul Kim ),구찬회 ( Chan Hoei Koo ) 한국가축위생학회 1992 韓國家畜衛生學會誌 Vol.15 No.2
The study was attempted to scrutinize the normal osmotic fragility of erythrocytes in domestic poultry such as chicken, quail and duck making a comparison with that in domestic mammalia such as dog and pig. Osmotic fragility of erythrocytes was determined on blood samples from 10 healthy adult animal in each species. Optical initial hemolysis of erythrocytes occurred at 0.395±0.03% Nacl for chicken, 0.410±0.03% for duck, 0.440±0.02% for quail, 0.470±0.05% for dog and 0.560±0.03% for pig. Optical complete hemolysis of erythrocytes occurred at 0.270±0.02% Nacl for chicken, 305±0.03% for duck, 0.360±0.02% for quail, 0.370±0.03% for dog and 0.455±0.03% for pig. In other words, erythrocytes of poultry have stronger resistance to osmotic lysis than that of mammalia, showing the strongest resistance in chicken among the tested poultry.
Chemical vapor sensing properties of graphene based on geometrical evaluation
황석주,임주환,박형구,김환균,김덕환,송인상,김재헌,이석,우덕하,전성찬 한국물리학회 2012 Current Applied Physics Vol.12 No.4
Graphene is a promising candidate for chemical vapor sensing.We prepared graphene sheets from highly oriented pyrolytic graphite through mechanical cleavage in order to investigate their responses to NH3and NO2 as electron donors and acceptors, respectively. We investigated how the geometric characteristics of graphene, such as length-to-width (L/w) ratio and number of layers, affect chemical sensing properties at room temperature and ambient atmosphere. In this study, the L/w ratio of an individual graphene sheet, which is related to graphene conductivity, dominated the NH3 sensing characteristics,while the number of graphene layers had no significant effect. We also studied the effects of various thermal treatments on graphene sensitivity and recovery time in an ambient atmosphere. This study confirms the effects of geometry, operation temperature and gas concentration on the NH3 and NO2sensing performances of graphene.
산양(山羊)의 Liver cirrhosis 발생보고(發生報告)
민병만 ( Byeong Man Min ),박경애 ( Kyeong Ae Park ),김환균 ( Hwan Gyun Kim ),조용성 ( Young Sung Cho ),김성렬 ( Seong Rhyul Kim ),구찬회 ( Chan Hoei Koo ),정운익 ( Un Ik Chung ),김홍보 ( Hong Jip Kim ) 한국가축위생학회 1993 韓國家畜衛生學會誌 Vol.16 No.1
This survey was performed to report rare outbreak of liver cirrhosis in Korean native goat (KNG) which was died of Yangpyeong`s goat farm on Feb. 1992. The examination for the KNG was carried out by clinical signs, necropsy and various laboratory test including parasitic, bacterial and histological test. The KNG looked jaundice, ascite, hemorrhage of rumen, abomasum and intestine, and brownish smooth cirrhotic liver at necropsy. Histological examination for liver revealed considerable proliferation of connective tissue and piecemeal necrosis which was caused by chronic active inflammation in interlobules and intralobules. There were atrophic micro and macro nodules which were surrounded by connective tissue. The lobular structure lack almost all central vein. The portal areas appearred proliferation of bile ducts, blood vessels and connective tissues. These connective tissue infiltrated heavily with plasma cells, lymphocytes and histocytes. Histological examination for brain proved to be hepatic encephalopathy by virture of congestion and edema in cerebral medullary. From these results were demonstrated mixed nodular, active, postnecrotic liver cirrhosis.