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RISS 인기검색어
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- 저자 : 박재용(Jae Young Park) (검색결과 124 건)
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박재용,임민규,오영규,박재용,한석영,Park, Jae-Yong,Im, Min-Kyu,Oh, Young-Kyu,Park, Jae-Yong,Han, Seog-Young 한국생산제조학회 2010 한국생산제조학회지 Vol.25 No.5
Reliability-based topology optimization (RBTO) is to get an optimal topology satisfying uncertainties of design variables. In this study, reliability-based topology optimization method is applied to the inner reinforcement of vehicle's hood based on BESO. A multi-objective topology optimization technique was implemented to obtain optimal topology of the inner reinforcement of the hood. considering the static stiffness of bending and torsion as well as natural frequency. Performance measure approach (PMA), which has probabilistic constraints that are formulated in terms of the reliability index, is adopted to evaluate the probabilistic constraints. To evaluate the obtained optimal topology by RBTO, it is compared with that of DTO of the inner reinforcement of the hood. It is found that the more suitable topology is obtained through RBTO than DTO even though the final volume of RBTO is a little bit larger than that of DTO. From the result, multiobjective optimization technique based on the BESO can be applied very effectively in topology optimization for vehicle's hood reinforcement considering the static stiffness of bending and torsion as well as natural frequency.
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오영규,박재용,임민규,박재용,한석영,Oh, Young-Kyu,Park, Jae-Yong,Im, Min-Gyu,Park, Jae-Yong,Han, Seog-Young 한국생산제조학회 2010 한국생산제조학회지 Vol.25 No.6
The objective of this study is to integrate reliability analysis into shape optimization problem using the evolutionary structural optimization (ESO) in the application example. Reliability-based shape optimization is formulated as volume minimization problem with probabilistic stress constraint under minimization max. von Mises stress and allow stress. Young's modulus, external load and thickness are considered as uncertain variables. In order to compute reliability index, four methods, i.e., reliability index approach (RIA), performance measure approach (PMA), single-loop singlevector (SLSV) and adaptive-loop (ADL), are used. Reliability-based shape optimization design process is conducted to obtain optimal shape satisfying max. von Mises stress and reliability index constraints with the above four methods, and then each result is compared with respect to numerical stability and computing time.
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만성 족관절 불안정증에서 건이식을 이용한 외측 인대 재건술의 적응증
박재용,최기원,조재호,강찬,최경진,정진화,김학준,배서영,차승도,김기천,한승환,2015 대한족부족관절학회 보험장애판정위원회,Park, Jae Yong,Choi, Gi-Won,Cho, Jae-ho,Kang, Chan,Choi, Kyungjin,Chung, Jin-Wha,Kim, Hak Jun,Bae, Su-Young,Cha, Seung-Do,Kim, Ki Ch 대한족부족관절학회 2016 대한족부족관절학회지 Vol.20 No.1
Purpose: The purpose of this study is to review the indications of ankle lateral complex reconstruction using tendon graft. Materials and Methods: We searched PubMed using the index, "ankle, instability, lateral ligament, reconstruction" from 1990 to present (September 30, 2015). We excluded 1) modified Brőstrom operation (MBO), 2) conventional tenodesis surgery, 3) review article, 4) technical note, and 5) articles written in another foreign language. We reviewed 24 papers through the publication events, operational method, the indications of surgery, and the specific features of the patient group. Results: There were the indications of 1) previous ligament surgery failure, 2) situation when ligament repair is impossible due to the ligament defect, 3) severe instability (preoperative talar tilt >$15^{\circ}$, anterior draw >10 mm or the difference of contralateral side talar tilt >$5^{\circ}$, anterior draw >3 mm), and 4) overweight (body mass index >$30kg/m^2$). Other considerations included 1) generalized joint laxity and 2) workers, highly-demanded or athlete highly-affected by instability. Conclusion: The ankle lateral complex reconstruction using tendon graft could be indicated in patients with the possibility of MBO failure with several considerations.
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박재용,최진은,차승익,배낙천,채포희,이재욱,강영모,김창호,정태훈,Park, Jae-Yong,Choi, Jin-Eun,Cha, Seung-Ick,Bae, Nack-Cheon,Chae, Po-Hee,Lee, Jae-Yook,Kang, Young-Mo,Kim, Chang-Ho,Jung, Tae-Hoon 대한결핵및호흡기학회 2001 Tuberculosis and Respiratory Diseases Vol.50 No.2
연구배경 : 폐기종은 대개 흡연의 결과로 생기나 1-2%에서는 ${\alpha}_1$-antitrypsin (A1AT)의 유전적 결핍으로 인해 발병한다. A1AT의 유전적 이형에 대한 연구는 주로 서구인을 대상으로 한 것으로 저자들은 정상 한국인에서 A1AT의 유전형(genotype)을 알아보고자 하였다. 방 법 : 1998년 1월부터 2000년 5월까지 경북대학교병원 건강검진센타 방문자 가운데 문진, 흉부단순촬영, 폐기능검사 등을 통하여 만성폐쇄성폐질환 및 천식등이 없는 정상인 380명을 대상으로 하였다. A1AT의 M1(Ala), M1(Val), M2, S, Z alleles에 대한 중합효소 연쇄반응(PCR) 및 restriction fragment length polymorphism (RFLP)를 시행하였다. 결 과 : A1AT 유전형의 빈도는 M1(Val)/M1(Val)형이 254예 (66.8%)로 가장 많았으며 M1(Val)/M2형 105예(27.6%), M2/M2형 19예 (5.0%), M1(Val)/M1(ala)형 2예 (0.5%) 순 이었다. 연령, 성별, 흡연력에 따른 유전자형의 분포도는 유의한 차이가 없었다. 결 론 : 한국인에서는 A1AT 결핍과 관련이 있는 유전형을 갖는 사람은 없거나 매우 드물 것으로 생각된다. 따라서 한국인에서는 A1AT 결핍 외의 다른 유전적 요소가 폐기종의 발병에 관여할 것으로 생각된다. Background : Alpha-1-antitrypsin (A1AT) deficiency is the only established genetic risk factor for emphysema. This study was undertaken to investigate the prevalence of the genotypes of A1AT genotypes in healthy Koreans. Method : The study population consisted of 380 Healthy Koreans enrolled at the Health Promotion Center in Kyungpook National University Hospital. The polymerase chain reaction (PCR) and restriction fragment length polymorphim (RFLP) for detecting the A1AT variants M1(Ala), M1(Val), M2, S and Z were used. Results : The genotypes of subjects were as follows : M1(Val)/M1(Val), 254(66.8%) ; M1(Val)/M2, 105(27.6%) ; M2/M2, 19 (5.0%) ; and M1(Val)/M1(Ala), 2 (0.5%). There was no case with 'deficiency' alleles such as S and Z found in this study. Conclusion : These results suggest that A1AT deficient alleles are either extremely rare or not present in Koreans.
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3차진료기관(3次診療機關)과 환자의뢰기관간(患者依賴機關間)의 중복검사(重複檢査)
박재용,김귀영,Park, Jae-Yong,Kim, Gui-Young 대한예방의학회 1993 예방의학회지 Vol.26 No.3
본 연구는 1차 의료기관과 3차 진료기관의 검사 내용 및 이들 간의 중복검사율을 파악할 목적으로 대구직할시내 1개 3차 진료기관에 1992년 3월 16일부터 4월 11일까지 진료의뢰서를 갖고 내과, 일반외과, 정형외과, 신경외과 외래를 방문한 초진환자 498명을 대상으로 설문지 및 의무기록을 통해 조사하였는데 그 결과를 요약하면 다음과 같다. 대상자는 3차 진료기관이 속한 중진료권에 거주하는 환자가 48.8%였고 나머지가 대진료권에 속한 환자였으며, 1차 의료기관의 방문목적이 진단과 치료를 위해서 방문한 경우가 74.1%였고 진료의뢰서를 발급받기 위해서가 25.9%였다. 진료의뢰서를 본인이 원해 발급받은 경우가 전체의 52.6%였는데 순수하게 의사의 판단에 의해 발급받은 환자가 47.4%로서 아직도 환자 의뢰체계가 제대로 완비되었다고 말하기 어렵다. 진료의뢰서의 발급기관은 의원급이 67.5%, 병원급이 16.3%, 보건기관이 14.2%였다. 1차 의료기관에서 검사를 하고 3차 진료기관을 방문한 환자는 49.4%였는데, 이 중에서 진료한 1차 의료기관에서 다른 진료기관으로 검사를 의뢰해서 검사를 실시한 경우가 7.8%였다. 1차 의료기관에서는 대상자의 20.9%가 X-ray 검사를 받았고, 10.6%가 소변검사, 9.0%가 심전도검사를 받았으며, 의료보험 비급여 대상종목인 컴퓨터단층촬영과 초음파검사는 각각 3.4%, 6.4%였다. 3차 진료기관에서도 방문환자의 45.2%가 X-ray 검사를 받았고, 간기능검사 24.7%, 소변검사 19.1%, 심전도검사 15.7%의 순으로 나타났다. 1차 의료기관에서 검사를 받은 사람 중 검사결과지를 지참한 환자의 비율은 컴퓨터단층촬영이 76.5%로 가장 많았고, 다음이 초음파검사로 31.3%여서 고가 의료장비 이용시 검사결과지 지참율이 높았다. 1차 의료기관과 3차 진료기관에서의 중복검사율은 각 진료과에 따라 특성이 있으나 전체적으로 보면 갑상선 기능검사가 71.4%로 가장 높았고, 다음이 혈액검사(Routine CBC)가 67.9%, X-ray검사가 64.4%였다. 그리고 초음파검사 62.5%, 컴퓨터단층촬영 11.8%, 심전도검사 35.6%, 위내시경검사 45.2%였다. 1차 의료기관에서의 검사결과지를 지참한 경우만을 기준으로 하면 혈액 검사가 75.0%, 간기능검사가 72.7%로 높았으나 X-ray 52.2%, 초음파검사 60.0%였는데, 고가장비인 컴퓨터 단층촬영은 15.4%였다. 이상의 결과에서 3차 진료기관에서는 1차 의료기관에서 실시한 검사를 중복검사한 경우가 많고 1차 의료기관에서의 검사결과지를 지참하는 환자의 중복검사율도 특수한 경우를 제외하고는 큰 차이가 없었음을 감안할 때 진료의뢰시 보다 상세한 진료결과지를 지참하도록 하는 등 환자의뢰체계를 합리적으로 개선하여야 확인검사로 인한 중복검사를 경감시킬 수 있을 것으로 생각된다. 아울러 불필요한 검사를 줄이기 위해서는 의료분쟁을 줄일 수 있는 방안이 마련되어야 하고, 의료보험수가의 조정도 필요할 것이다. This study was conducted to investigate the repeat test rate for diagnosis at a tertiary hospital for the outpatients who were referred themselves to the hospital by the clinics and other medical facilities. The study population consisted of 498 patients who visited outpatient department of internal medicine, general surgery, orthopedic surgery and neurosurgery in the hospital between March 16 and April 11, 1992. This study was surveyed by the questionnaire about the tests for diagnosis at first level medical facilities, and then, was investigated by the medical record about the tests for diagnosis at a tertiary hospital. The proportion of test among the patients who utilized the first level medical facilities was 20.9% for the X-ray test, 10.6% for the urinalysis, 9.0% for the electrocardiogram, 3.4% for the computer tomogram and 6.4% for the ultrasonogram. At the tertiary hospital, the X-ray test was 45.2%, the liver function test was 24.1%, the urinalysis was 19.1%, and the electrocardiogram was 15.7%. The proportion of patients who possessed results of test for diagnosis at the first level medical facilities was 76.5% for the computer tomogram, and 31.3% for the ultrasonogram. As the repeat test rate between the first level medical facilities and the tertiary hospital, the thyroid function test was the first rank as 71.4%, the second rank was the routine CBC as 67.9%, and the third rank was the X-ray test as 64.4%. But among the patients that brought the result for tests at the first level medical facilities, the repeat test rate was as follow : the routine CBC was 75.0%, the liver function test was 72.1%, and the computer tomogram was 15.4%.
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양파추출물 유산 발효 섭취가 고지방식이 흰쥐의 운동 유발성 지질과산화 및 항산화 효소에 미치는 영향
박재용(Park, Jae-Yong),송영주(Song, Young-Ju),박훈(Park, Hoon) 한국체육과학회 2019 한국체육과학회지 Vol.28 No.2
This study was conducted to investigate the effects of lactic acid fermented Onion supplementation and acute swimming exercise on lipid peroxidation levels and SOD protein activity of rats fed a high-fat diet. Thirty-two SD male rats, 6 weeks of age, were randomly divided into 4 groups: high fat diet sedentary group(HS, n=8), high fat diet exercised group(HE, n=8), lactic acid fermented Onion supplemented sedentary group(OS, n=8), lactic acid fermented Onion supplemented exercised group(OE, n=8). They were given a high fat diet (HS and HE) or supplemented 3% of lactic acid fermented Onion(OS and OE) for 4 weeks. The animals in the swim groups swam for 60 min/days, 5 days/wk for 4 weeks in a plastic tube filled with water(temp: 35±1℃, depth 50cm, radius: 25cm). In the results, serum TG level of OE group was significantly lower than that of the HE and OS group(p<.01). Serum TC level of OS group was significantly lower than that of the HS group(p<.01) and serum HDLC level of OS group was significantly higher than that of the HS group(p<.05). Furthermore, GPx activity of HE, OS and OE group were significantly increased compared to HS.(p<.01) despite of no significant differences in SOD activity. These results suggest that Lactic acid fermented Onion supplementation has a positive effect on serum lipid profiles and antioxidant enzymes in rats during the acute swimming exercise.
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