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경북지방(慶北地方) 젖소로 부터 Brucella abortus의 분리(分離) 및 균형별(菌型別)
정종식,조용준,박청규,Chung, Jong-sik,Cho, Yoong-jun,Park, Cheong-kyu 대한수의학회 1988 大韓獸醫學會誌 Vol.28 No.2
Serological study and isolation of Brucellae from dairy cattle were carried out in Kyungpook area of Korea during the period from 1984 to 1985. Biotyping of the isolates was done. Of the 11168 cattle in 2479 herds examined, 27 cattle (0.24%) in the 17 herds (0.69%) were serologically positive for brucellosis. Brucella abortus was recovered from 20 (74.1%) of the 27 infected cattle, and all the strains of the isolates belonged to biotype 1. Of the tissues cultured for brucellae, the supramammary lymph nodes had the highest rate (55.6%) of recovery of brucella organisms.
Parathion을 투여(投與)한 Rat의 혈청(血淸), 척수(脊髓) 및 뇌(腦) Cholinesterase 활성도(活性度)의 변동(變動) 조사(調査)
도재철 ( Jae Cheul Do ),이창우 ( Chang Woo Lee ),손재권 ( Jae Kweon Son ),정종식 ( Jong Sik Chung ) 한국동물위생학회 1991 한국동물위생학회지 (KOJVS) Vol.14 No.1
Parathion is widely used in agriculture, but it is highly toxic and now clear that parathion behaves like a cholinergic drug by inhibiting the enzyme cholinesterase. In order to know acute toxicity and the changes of cholinesterase activity according to time lapsed in Sprague-Dawley rats injected single with half dose to LD50 of parathion, cholinesterase activities in serum, spinal cord, whole brain and median lethal dose between sex difference were investigated. The results obtained were summerized as follows; 1. LD50 values of parathion given intraperitoneally to male and female rats were 10.5mg/kg(95% confidence limits, 6.6-16.8mg / kg) and 3.3mg / kg (95% confidence limits, 1.9-5.6mg / kg). 2. The inhibition rate of cholinesterase activities in serum of parathion-injected rats according to time lapsed were peakly decreased to 35.4%(male) and 32.4%(female) after 1 hour in comparison to control group, but cholinesterase activities were completely recovered after 48 hours. 3. The inhibition rate of cholinesterase activities in spinal cord of parathion-injected rats according to time lapsed were peakly decreased to 31.1%(male) and 36.3%(female) after 30 minutes in comparison to control group, but cholinesterase activities were completely recovered after 48 hours. 4. The inhibition rate of cholinesterase activities in whole brain of parathion-injected rats according to time lapsed were peakly decreased to 32.2%(male) and 42.6%(female) after 1 hour in comparison to control group, but cholinesterase activities were completely recovered after 48 hours.
박영태(Young Tae Park),채명수(Myung Su Cha),정종식(Jong Sik Chung) 한국국제통상학회 2002 국제통상연구 Vol.7 No.1
The purpose of this paper is to study the policies of Chinese government to activate e-commerce in Chinese market. The estimates of e-commerce market in China is expected to be U$ 3,837,000,000 approximately. It resulted from the several phenomena like the increased income, development of IT industry, growth of related firms, etc. Especially, various policies driven by Chinese government, bases of making policies for e-commerce, regulations for internet and e-commerce, policy for promoting IT industry, opening of service market etc, have ever promoted e-commerce and opened the markets. But, various policies driven by Chinese government have some positive or negative aspects simultaneously. The reasons of some difficulties in promoting Chinese e-commerce can be explained by several factors like immaturity of environment, imperfect policies, regulated IT market, confused policy-making system, and sufficient digital market base available only in big cities.
도재철 ( Jae Cheul Do ),이창우 ( Chang Woo Lee ),손재권 ( Jae Kweon Son ),정종식 ( Jong Sik Chung ) 한국가축위생학회 1990 韓國家畜衛生學會誌 Vol.13 No.1
In order to know the range in blood chemical values and enzyme activities of korean native cattle and pigs being raised in kyongbuk province, the mean values of serum protein compositions, enzyme activities(GOT, GP, ALP), cholesterol, glucose, bilirubin, creatinine, urea nitrogen and uric acid were determined and the results obtained were as follows: 1. Mean contents of total protein, albumin, globulin and A/G ratio for the korean native male cattle were 7.28±0.86 g / dl, 3.39±0.65 g / dl, 3.83±0.92 g / dl & 0.95±0.34: for the male pigs were 7.39± 0.84 g / dl, 3.63±0.43 g / dl, 3.77±0.88 g / dl, 0.97±0.26: for the female pigs were 7.60±0.68 g / dl, 3.54±0.58 g / dl, 3.90+0.74 g / dl, 1.02±0.34. 2. Mean activities of GOT, GPT and ALP for the korean native male cattle were 48.3±11.6 U, 29.6±4.6 U, 13.7±2.8; for the male pigs were 58.6±10.6 U. 38.6±5.3 U, 24.9±9.2 U: for the female pigs were 43.9±10.8 U, 40.5±4.6 U, 13.9±3.4 U. 3. Mean contents of cholesterol, glucose and bilirubin for the korean native male cattle were 108.7±31.8 mg/dl, 88.2+26.4 mg/dl, 0.69±0.52 mg/dl: for the male pigs were 105.9±18.3 mg/dl, 102.9±22.3 mg/dl, 0.70+0.18 mg/dl: for the female pigs were 113.1±20.9 mg/dl, 103.2±23.9 mg/dl, 0.49±0.21 mg/dl. 4. Mean contents of creatinine, urea nitrogen and uric acid for the korean native male cattle were 2.86±0.69 mg / dl, 18.1 ±5.0 mg / dl, 1.38±0.66 mg / dl; for the male pigs were 2.20± 0.51 mg / dl, 18.2±4.3 mg/dl, 0.29+0.10 mg/dl; for the female pigs were 2.36+0.70 mg/dl, 20.5±5.4 mg/dl, 0.69±0.27 mg / dl.