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각종 간질환에서 Tc - 99m pertechnetate 경직장 문맥신티그라피를 이용한 문맥 순환의 평가
김관우 ( Kwan Woo Kim ),김종순 ( Chong Soon Kim ),김학산 ( Hak San Kim ),박원 ( Won Park ),이범우 ( Bum Woo Lee ),서관식 ( Kwan Sik Suh ),이봉휘 ( Bong Hwi Lee ),김광일 ( Kang Il Kim ) 대한소화기학회 1989 대한소화기학회지 Vol.21 No.4
N/A Portal circultion in patients with various liver diseases was evaluated by Tc-99m pertechnetate per-rectal scintigraphy. 10mCi of pertechnetate was instilled into the upper rectum, and serial scintigrams were taken. Time-activity curves for the liver and heart were recorded sequentially. Through analysis of these curves, the per-rectal portal shunt indices were calculated for 15 norrnal controls, 12 with acute hepatitis (AH), 28 with chronic hepatitis, 51 with liver cirrhosis, 1 with falminant hepatic failure (FHF ). 5 with hepatic congestion (I-IC) due to congestive heart failure (CHF). The results obtained were as follows: 1) 15 normal controls and the patients with acute and chronic hepatitis all had 'Pattern II' scintigrams, and the patients with liver cirrhosis (LC) and hepatic congestion had 'Pattern II' scintigrams. One patient with FHF showed 'Pattern II' scintigram. 2) The shunt index (SI) in the normal controls was l.32±1.30%, in AH 10.9±5.7%, in CPH 5.4±2.3%, in CAH 11.8±4.2%, in LC 72.4±21.6%, in HC 39.9±27.2%, and in one FHF 75.4%. 3) Patients with various liver diseases had the significantly higher SI than the normal controls (p < 0.001). Also, the SI in pts. with liver cirrhosis was significantly higher than that of all the other groups (p < 0.001). 4) The mean SI was significantly higher for chronic liver diseases, that were more severe, increasing in the order of CPH, CAH and liver cirrhosis (p<0.001). Also, pts. With AH and CAH showed the significantly higher SI than pts. With CPH (p<0.001), and there was no significant difference in the SI between pts. With AH and CAH (p>0.05). 5) The mean SI was significantly higher in the cirrhotic pts. With varices, encephalopathy, splenomegaly or ascites than in such patient without them (p<0.005). 6) The mean SI in the cirrhotic pts, was calculated according to the modified Child's classification, of which results were that the SI was increased significantly in the order of Grade A, B and C (p< 0.001). 7) In one patient with LC, SI was much decreased from 39.5% before surgery to 7.1% after surgery. The above results suggest that per-rectal portal scintigraphy can be used to evaluate the portal circulation non-invasively and diagnose the portal hypertension in various liver diseases. Also, it can be used to express the degree of any portal hypertension not only by images but also quantitatively, using shunt index, and it is considered useful for the observation of the course of liver diseases and eva]uation of effectiveness of therapy.
Hormone Analysis during Artificial Estrus Induction in Korean Black Goats
Kwan-Woo Kim(김관우),Dayeon Jeon(전다연),Jinwook Lee(이진욱),Seungchang Kim(김승창),Sang-Hoon Lee(이상훈) 한국산학기술학회 2019 한국산학기술학회논문지 Vol.20 No.8
본 연구의 목적은 한국 재래흑염소 번식생리의 이해를 돕고자 서로 다른 발정동기화법을 적용하였을 때 혈액내 프로게스테론과 에스트로겐의 농도변화를 알아본 것이다. 발정동기화법은 소의 방법을 기본으로 하여 품종의 크기에 따라 호르몬의 용량을 조절하는 것을 가장 많이 사용되고 있으나, 흑염소에 적용하였을 때 발정동기화 후 인공수정 적기의 판단이 정확하지 않아 효율이 매우 낮게 조사된다. 연구에 조사된 발정동기화 방법으로는 소에서 많이 이용되어왔던 CIDR + PGF2ɑ, PGF2ɑ + GnRH + PGF2ɑ, 그리고 CIDR + PGF2ɑ + PMSG 세가지를 적용하였다. 혈액내 프로게스테론과 에스트로겐은 발정동기화 각 처치 후와 최종 처치 후 수일간의 변화를 조사하였다. 혈액내 프로게스테론과 에스트로겐 농도를 조사한 결과, 세가지 발정동기화 방법 마지막 처치 전까지는 모두 다른 변화를 보였으나, 그 후로는 서로 유사한 패턴으로 호르몬이 변화하는 것을 관찰할 수 있었다. 결론적으로 발정동기화를 위한 호르몬 주사가 개체에 서로 다르게 작용하여 발정을 유도하고 최종 처치 후로는 유사한 발정이 유도되어 유사한 호르몬 상태를 보인 것으로 생각된다. 본 연구의 결과를 한국 재래흑염소 번식에서 인공수정이나 수정란 이식과 같은 기술에 접목한다면 효율적인 개량유도에 기여할 것으로 판단된다. The purpose of the study is to investigate the change in the blood progesterone (P4) and estrogen (E2) levels when applying different estrus induction protocols to Korean black goats, and this was done to gain understanding about their reproduction physiology. For the experiment, we performed three estrus induction protocols that are commonly used in bovine: controlled internal drug release (CIDR) + prostaglandin F2ɑ (PGF2ɑ), PGF2ɑ + gonadotropin-releasing hormone (GnRH) + PGF2ɑ, and CIDR + PGF2ɑ + PMSG. The P4 and E2 concentrations showed different patterns until the last treatment of the three protocols. However, similar concentration patterns were shown after the last treatment in all the protocols. In conclusion, we monitored the blood P4 and E2 levels in Korean black goats following three different estrus induction protocols. Our findings may be used in other breeding programs of Korean black goats, such as artificial insemination and embryo transfer.
이용자의 통행 특성을 고려한 개별 정보 콘텐츠의 편익에 관한 연구
김관우(Kwan-Woo Kim),성수련(Soo-Lyeon Sung),이병주(Byung-Joo Lee) 한국엔터테인먼트산업학회 2014 한국엔터테인먼트산업학회논문지 Vol.8 No.2
국민들의 사회적인 활동이 급속하게 변화하면서 개인들의 통행행동도 과거의 단순한 이동 개념에서 다양한 목적의 활동패턴 개념으로 변화하고 있다. 따라서 이용자 중심의 다양한 정보 제공 시스템을 구현하기 위해서는 정보 이용자들이 필요로 하는 정보 콘텐츠와 편익 가치를 명확하게 파악할 필요성이 있다. 이에 본 연구에서는 개별 정보 콘텐츠의 편익 가치를 평가하기 위하여 대중교통과 자가용 이용자들을 대상으로 통행 목적 및 시점별로 선호하는 정보 콘텐츠 및 상황별 지불의지액을 조사하였다. 그리고 개별 정보 콘텐츠에 대한 상황별 편익추정 모형을 구축하여 이용자들의 편익 가치를 평가한 결과, 대중교통의 정보 콘텐츠는 통근ㆍ통학시(통행 전과 통행 중)에 월 231원, 여행?관광시(통행 전)에 224원, 자가용의 정보 콘텐츠는 통근ㆍ통학시 통행 전 상황에 월 199원, 통행 중 상황에 월 200원, 여행?관광시(통행 전)에 203원의 편익 가치가있는 것으로 분석되었다. 이상의 결과를 종합해 볼 때 이용자들은 여러 활동 단계나 의사결정 과정에서 다양한 정보 콘텐츠를 요구하며, 주어진 상황에 따라 정보 콘텐츠에 대한 편익 가치를 다르게 평가하고 있어 정보 이용자들의 요구와 행동특성에 맞는 다양한 유형의 맞춤형 정보 콘텐츠를 개발하고 제공할 필요성이 있음을 알 수 있었다. Since social activities of the general public have changed dramatically in short time, the pattern of individual travel behavior has shifted. Accordingly, the trip purpose moves from traveling one place to another in the past to multiple activities. Considering all of changes, we should figure out the contents of information which users need and the present worth of benefits which the information provide in order to build a user-friendly information providing system. To this end, a survey of public transport users and car users was conducted on trip purpose, contents of most preferred information based on time frame, and ‘Willingness-to-pay’ for the information they use to figure out the benefits of individual information contents. The benefits were evaluated by using benefit-estimation model for individual information content. According to the survey, there are 231 won and 224 won of monthly benefit value in commutation(pre-trip and on-trip) and traveling respectively in case of public transportation and 199 won, 200 won and 203 won of monthly benefit value in commutation(on-trip, pre-trip) and traveling respectively in the other case. Based on results of the survey, it was found that users want various information during or before transit and the benefits that the benefits were varied following the conditions where the respondents were. Therefore, it is required to develop and provide numerous customized information contents that meet users" demands.
한-미 FTA 순원가법의 실체적 분석과 한국 자동차 기업의 활용방안 연구
김관우(Kwan-Woo Kim),조찬혁(Chan-Hyouk Cho) 한국관세학회 2014 관세학회지 Vol.15 No.4
The purpose of this study is to provide the Korea car companies with the information acquired in the course of origin verification on the US carmaker conducted by Korea Customs Service. This study examines the characteristics of regional value contents rules based on the Rules in Korea-US FTA by analyzing the Build-Down method which is most commonly used in practice. The examination suggests that it is quite difficult for the Korea carmakers to use the net cost method because of the excessive workloads and the concerns of information leakage. During the FTA negotiation, Korea delegations and carmakers opposed to adoption of the net cost method on the ground of these worries. B Customs conducted FTA origin verification on the cars exported by the USA carmaker which used net cost method in 2013 and by that chance we came to know that the net cost method is quite simpler and the range of information disclosure is limited then we expected. We found out that net cost method is objective and reliable and is commonly used by US carmakers. In addition, the empirical comparison of regional value contents rates between build-down method and net cost method considering the cost structure of Korea carmakers reveals that net cost method is more efficient than build-down method. The findings of this study are expected to contribute to the better utilization of Korea-US FTA by the Korea carmakers.