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- 저자 : 김성식 ( Kim Sung-sik ) (검색결과 236 건)
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김성식,임시연,정풍만,Kim, Sung-Sik,Rhim, Si-Youn,Jung, Poong-Man 대한소아외과학회 2008 소아외과 Vol.14 No.1
From 1979 to 2006, fifty eight patients with esophageal atresia were treated by one pediatric surgeon at Hanyang University Hospital. We analyzed the clinical findings and outcome of these 58 patients. There were 30 males and 28 females. Their mean birth weight was $2,960{\pm}400g$ (1,170~4,020 g). The most common type of anomaly was Gross type C (49 patients; 84.5 %). There was no type B. Fifty-two patients underwent definitive surgery. Postoperative complications were as follows: anastomotic leakage in 17 patients (32.7 %), anastomotic site stricture in 15 (28.8 %), gastroesophageal reflux in 10 (19.2 %) and recurrent TEF in 1 (1.9 %). A total of 152 associated anomalies were detected from 48 patients (82.2 %). The cardiovascular system was the most commonly affected (30 patients with 46 anomalies). The VACTERL association was present in 14 patients (24.1 %). Operative mortality was 17.3 % including self-discharge patients after operation.
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고속 Embedded Processor에서 EMI 최소화 회로
김성식,정의석,조경록,Kim, Sung-Sik,Cheong, Eui-Seok,Cho, Kyoung-Rok 대한전자공학회 1999 電子工學會論文誌, C Vol.c36 No.1
휴대용 통신장비를 비롯한 각종 전자기기는 고집적화 및 소형화 되고 있으며, 이러한 전자기기는 무수히 많은 원하지 않은 전자파를 발생시키고 있다. 이에 따라 EMI 영향을 최소화 하기 위한 연구가 요구되며, 본 연구에서는 전자기기를 구성하는 각 회로들의 반도체 설계 단계에서의 EMI발생 원인을 분석하여 병렬 버퍼의 출력 구동회로와 decoupling 커페시터를 이용하여 EMI를 최소화하는 회로를 제안한다. 이를 i8052에 적용하여 칩을 제작하고 측정한 결과 delta 전류는 1/3으로 감소하였고 EMI는 10dBuV 이상 개선된 결과를 얻었다. All kinds of electronic machinery including portable communication system are being smaller size and are used at high frequency. It generates a lot of unwanted noise signals called electromagnetic interface (EMI). This paper presents an analysis result of EMI generation in VLSI and propose new circuits to minimize of EMI using I/O driver with parallel buffer architecture and distributed decoupling capacitor in a chip. The proposed circuits are evaluated with i8052 MCU which is shown reducing of delta current 1/3 times and improvement of EMI more 10dBuV compared with conventional processors.
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Lipo-PGE<sub>1</sub>의 투여경로가 흰쥐의 횡복직근피판의 생존률에 미치는 효과
김성식,변준희,유결,한기택,Kim, Sung-Sik,Byeon, Jun-Hee,Yoo, Gyeol,Han, Ki-Taik 대한성형외과학회 2005 Archives of Plastic Surgery Vol.32 No.1
The Transverse rectus abdominis musculocutaneous (TRAM) flap has been commonly used for autologous breast reconstruction. Despite these clinical usefulness, the TRAM flap is prone to partial flap or fat necrosis in especially pedicled flap. To improve flap survival, the surgical delay procedures and pharmacological treatments have been developed. In many studies for the pharmacological treatment, Lipo-$PGE_1$ has demonstrated a marked ability to improve flap survival and it's effect has been proved similar to surgical delay procedure. The purpose of this study is to determine the most effective route of Lipo-$PGE_1$ administration as a pharmacological treatment in TRAM flap of the rat. Fifty male Sprague-Dawley rats weighing 300-350 gm were divided into five groups, One week before flap elevation, Lipo-$PGE_1$($2{\mu}g/kg$) was injected three times in a week and than the left inferior epigastric vessel based TRAM flap ($5.0{\times}3.0cm$) elevated; group I: no procedure before flap elevation; group II: intraperitoneal injection; group III: intravenous injection; group IV: subcutaneous injection; group V: topical application. A flap was assessed at postoperative 7 days by comparison of flap survival rate, vessel counts(H-E stain), and vascular endothelial growth factor(VEGF) protein expressed by Western blot. The results demonstrated that the mean percentages of the flap survival area in group III were significantly higher than that of any other group(p<0.05). The vessel counts of all experimental groups were statistically higher than that of control group(p<0.05). Only in group III, the VEGF protein expression was increased significantly than control group and there are no difference in other experimental groups. In conclusion, the intravenous administration of the Lipo-$PGE_1$ is the most effective on flap survival, and the VEGF induced by Lipo-$PGE_1$ has some positive effects on new vessel formation and flap survival.
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Photoaddition Reactions of Alkynes to Quinonoid Compounds
김성식,김애란,조인호,심상철,Kim Sung Sik,Kim Ae Rhan,Cho In Ho,Shim Sang Chul Korean Chemical Society 1989 Bulletin of the Korean Chemical Society Vol.10 No.1
UV irradiation of anthraquinone and diphenylacetylene in benzene gave 1:1 photoadduct (7) and cyclization product (8). The photoreaction of anthrone and diphenylacetylene in dichloromethane afforded the photooxidation products (7, 8, and 9) in air. The photoproduct (7) underwent the cyclization reaction during the purification by the column chromatography (silica gel). When irradiated with 350 nm UV light, the product (11) of benzil reacted with diphenylacetylene to give a photoadduct(12).
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Photoaddition Reactions of p-Quinones to Conjugated Diyne
김성식,유동열,김애란,조인호,심상철,Kim Sung Sik,Yoo Dong Yeol,Kim Ae Rhan,Cho In Ho,Shim Sang Chul Korean Chemical Society 1989 Bulletin of the Korean Chemical Society Vol.10 No.1
Irradiation of solutions of p-quinones and conjugated diyne, 1,4-diphenylbutadiyne, with 350 nm UV light gave the photoproducts such as quinomethane in good yields (70-85%).
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김성식,Kim, Sung-Sik 대한예방의학회 1979 Journal of Preventive Medicine and Public Health Vol.12 No.1
부산지역 산업장에서 근무하고 있는 근로자 32,786명을 조사대상으로 하여 환경요인이 고혈압에 미치는 영향을 구명할 목적으로 동년 10월까지 고혈압의 유병율을 조사하였다. 제조업에 근무하고 있는 근로자는 전 조사대상자의 72.4%였으며 연령별로는 20-29세군이 39.9%로 가장 많았으며 이들의 성별 분포는 남녀 모두 20-29세 군에서 가각 36.8%, 46.1%로 가장 근로자가 많은 연령층이였다. 고혈압증의 유병율은 15.9였고 가장 유병율이 높은 업종은 도 소매 및 음식, 숙박업으로 51.5였다. 이 유병율은 연령이 많아 질수록 높아지는 경향이 있었다. A survey was performed from April 1975 to Oct. 1978, on the high blood pressure of workers employed at industries in Busan area in order to seek for the environmental factors on blood pressure. The number of workers surveyed in the manufacturing industries occupied 72.4 percent of the total. By the age group of all workers, 39.9 percent belonged to the 20-29 year group. For the age distribution and sex of the workers, the highest frequency was found in the 20-29 year group in both sexes and was 36.8% and 46.1% in male and female, respectively. The prevalence rate of hypertension among the workers was 15.9. The industries showing the highest prevalence rate equivalent to wholesale, retail trades, restaurants, and hotels. This survey presented a tendency of increasing prevalence rate as the age increases.
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김성식(Kim, Sung-sik) 한국법학원 2013 저스티스 Vol.- No.138
부진정연대의 관계에 있는 채무자를 공동피고로 하거나 혹은 그 중 일부를 상대로 먼저 소송을 하고 나머지 채무자에 대하여 다시 소를 제기하는 사건(특히 각종 손해배상 사건)을 접할 기회가 많다. 이때 공동불법행위자 사이에 부담하는 각 채무액이 다를 수 있는데 일부(특히 다액) 채무자가 일부변제 등으로 채권의 만족을 가져오는 행위를 한 경우 다른 채무자의 채무소멸에 미치는 영향에 관하여 판례상 일정한 법리가 형성되어 왔다. 그런데 외측설과 과실비율설로 구분하여 사건을 처리하는 대법원의 입장에 따라 그 구별기준을 살펴보면, 채무발생의 원인이 되는 사실관계 및 법률관계나 각 채무의 성질, 과실비율에 따른 손해의 공평한 분담이 필요한 정도나 신의칙의 요구라는 다소 모호한 성질의 것일 뿐 아니라, 그것 역시 법률관계의 변동이나 변제자 및 충당채무의 종류 등 우연한 사정에 따라 쉽게 바뀔 수 있다. 따라서 일부변제 당사자의 의사나 채권자 보호라는 부진정연대의 채권관계 제도의 취지, 과실비율에 따라 손해를 실질적으로 공평하게 분담시킨다는 것의 구체적 의미 등을 고려할 때 외측설의 일원화 가능성이 설득력 있다. 또한 일부변제 등에 관한 법리의 적용과 관련하여 재산상 손해의 산정이나 손익상계의 법리와 혼동을 방지하기 위해 각 요건의 충족 여부를 꼼꼼히 검토할 필요가 있고, 소액채무에 대한 일부변제가 이루어진 경우 반드시 그 변제액 전부가 다액채무의 소멸에 영향을 주는 것은 아님을 확인하였다. 특히 각 부대채무가 포함된 사안에서 일부변제 등에 관한 법리를 해석할 때에는 당해 각 채무의 소멸이 다른 각 채무의 소멸에 각각 따로 영향을 미치는 개별소멸의 원리가 적용되는데, 각 부대채무와 각 본채무 상호간 부진정연대성의 범위나 위 개별소멸의 원리의 구체적인 적용방식이나 기준을 확립할 필요가 있다. 따라서 채권자가 과잉이익을 취득하는 것을 방지하면서도 일정한 채권확보는 충실히 보장해 줄 수 있는 방향으로 논의를 발전시켜야 한다. Cases about principles on the expiration of other debts due to the partial reimbursement of some of the semi-joint and several debts(specifically cases relating to a claim for damages) are not unusual. Concerning the situation in which one of debtors with larger amount of debts pays off in the first place, there have been rather established principles in judicial precedents concerning how to decide its influence on the expiration of other debts, which are so called as fault ratio theory and outer perish theory. The judicial precedents apply the fault ratio theory or outer perish theory according to the certain criteria. Such criteria, which consider factual cause of each debt"s occurrence, legal relationship among those debts and fair allocation of the damage according to the fault ratio are not only somewhat vague, but also vary depending on accidental elements, such as who the payer was or to which debt the recompense was made, etc. Thus, to guarantee sufficient compensation for a creditor while reflecting the intentions of the parties relevant to the payment, it would be better to apply those principles wholly in conformity with the outer perish theory. When it comes to applying those principles, it is highly recommended to make sure whether every requirement is satisfied in order to avoid making a mistake by confusing those with such rules used in assessing damage amount or countervailing between profit and loss. With regard to interpreting and executing those principles, I examined that the repayment by a debtor with a smaller amount does not always affect the extinction of the other larger amount of debt. In dealing with cases in which affixed debts perish by the payment of other debts, the way courts regulate the extinctive effects on each added debt and main debt respectively is considered to be quite proper. Moreover, it is required to make detailed applications of those principles. Especially in the case pertaining to collateral debts, it should be noted that a certain amount of debts(all main debts are included) ought to be secured so long as a creditor does not get excessive interest from the recurrent attached debts.
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