열병합 시스템의 열네트워크를 통한 경제성 분석(1)

박용순,송은영,Park, Yong-Sun,Song Eun-Young 한국열병합발전협회 1999 열병합발전 Vol.13 No.-

박판을 이용한 Z-굽힘 가공의 전개 길이에 관한 연구

박용순,최계광,Park, Yong-Sun,Choi, Kye-Kwang 한국금형공학회 2021 한국금형공학회지 Vol.15 No.3

The bending process of a press die is to bend a flat blank to the required angle. There are V-bending, U-bending, Z-bending, O-bending etc. for bending processing, and the basic principle of calculating the unfolding length of die processing is used as the neutral plane length. Since the constant of the length value of the neutral surface is different depending on the type of bending, it is impossible to accurately calculate it. In particular, Z-bending processing is performed twice, and it is set on the upper and lower surfaces of the blank, and bending processing occurs at the same time as the upward and downward bending, and the elongation of the material occurs and the material increases. It is not possible to check with the calculated value, and it occurs in many cases where the mold is modified after start-up. This study aims to minimize die modification by developing a formula to calculate the development length of Z-bend.

제2족지 수질부 유리피판을 이용한 수지첨부재건 치험례

박용순,홍종원,김영석,노태석,나동균,Park, Yong-Sun,Hong, Jong-Won,Kim, Young-Suk,Roh, Tai-Suk,Rah, Dong-Kyun The Korean Society for Microsurgery 2010 Archives of reconstructive microsurgery Vol.19 No.1

Purpose: First introduced by Buncke and Rose in 1979, the neurovascular partial $2^{nd}$ toe pulp free tissue transfer has been attempted to reconstruct posttraumatic finger tip injuries. Although some surgeons prefer other reconstructive methods such as skin graft and local flap, we chose the partial $2^{nd}$ toe pulp flap owing to its many advantages. We report three successful surgical cases in which the patients had undergone this particular method of reconstruction. Methods: We retrospectively examined three cases of fingertip injury patients due to mechanical injury. Bone exposure was seen in all three cases, All had undergone partial toe pulp free flap for soft tissue defect coverage. Results: All flaps survived without any complications such as partial necrosis, hematoma or dehiscence. Although tingling sensation has returned in both cases, two-point discrimination has not returned yet. Currently no patient is complaining of any pain which gradually improved during their course of recuperation. All stitches were removed on postoperative 2 weeks. Patients are satisfied with the final surgical result and there are no signs of any edema or hematoma. Conclusion: The homodigital reconstruction of finger tip injury using the partial $2^{nd}$ toe pulp flap has numerous advantages compared to other reconstructive modalities such as its resistance to wear and tear and in that it provides a non-slip palmar digital surface. However it requires microsurgery which may not be preferred by surgeons. Advanced age of the patient can be a relative contraindication to this approach since atheromatous plaque from the donor toe can compromise flap circulation after surgery. We report three successful cases which patient age was considered appropriate. Further investigation with a larger number of cases and long term follow-up is deemed necessary.

브랜드 관리의 혁신 "BCM System"

박용순,Park, Yong-Sun 한국포장협회 2015 包裝界 Vol. No.

한국 성인의 지방산 섭취와 이상 지혈증과의 관련성

박용순(Yong-soon Park),박효진(Hyo-Jin Park),원선임(Sun-Im Won) 동아시아식생활학회 2011 동아시아식생활학회지 Vol.21 No.6

The purpose of this study was to examine the association between fatty acid intake and dyslipidemia in Korean adults, using data from the Korean National Health and Nutrition Examination Survey (KNHANES)I, II, III, and Ⅳ. After excluding subjects who had missing data for the dietary intakes, anthropometric measurments and laboratory tests, a total of 15,804 subjects aged 20~64 y (6,838 men and 8,966 women) from KNHANES 1998~2007 were included. All data were analyzed using SPSS Statistics software (version 18.0). Associations between fatty acid intakes and dyslipidemia were analyzed by logistic regression analysis after adjusting for age, BMI, energy intake, marital status, job, education level, alcohol intake, and smoking status. Fatty acid intakes were significantly higher in men than in women. The risk of hypertriglyceridemia was significantly and negatively associated with intakes of TFA, SFA, MUFA, PUFA, EPA, DHA, n-3 PUFA, and n-6 PUFA in both men and women. The risk of hypercholesterolemia was not significantly associated with any fatty acid intakes in either sex. The risk of high LDL cholesterolaemia was significantly and positively associated with intakes of TFA, MUFA, PUFA, LNA, n-3 PUFA, and n-6 PUFA in men however, there was no significant association with any fatty acids in women. The risk of low HDL cholesterolaemia was significantly and positively associated with intakes of TFA, MUFA, PUFA, LNA, n-3 PUFA, and n-6 PUFA in men, and was significantly and negatively associated with intakes of MUFA, PUFA, LNA, and n-3 PUFA in women. These results show that dyslipidemia is significantly associated with individual intake of fatty acids, suggesting that fatty acid type may be related to the risk of dyslipidemia.

표면처리된 EV 브레이크 디스크 마모시험

차용훈(Yong-Hun Cha),박창선(Cang-Sun Park),성백섭(Back-Sub Sung),이재희(Jae-Hee Lee),최지현(Ji-Hyun Choi),박용순(Yong-Sun Park) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4

In this research, the friction characteristic of coating materials of anodizing were investigated. The test was conducted in air and un-lubricated state using the Ball-on-disc friction experiment tester. The hard anodizing coating specimen was suggested to be more advantageous coating than no treatment test specimen of aluminum. it is concluded that the hard anodizing brake disk has the most improved frictional performance and corrosion characteristics environment.

하아드 아노다이징 EV 브레이크 디스크 표면 성능 시험

차용훈(Yong-Hun Cha),성백섭(Back-Sub Sung),박창선(Cang-Sun Park),이재희(Jae-Hee Lee),최지현(Ji-Hyun Choi),박용순(Yong-Sun Park) 한국자동차공학회 2011 한국자동차공학회 지부 학술대회 논문집 Vol.2011 No.9

In this research, the friction characteristic of coating materials of anodizing were investigated. The test was conducted in air and un-lubricated state using the Ball-on-disc friction experiment tester. The hard anodizing coating specimen was suggested to be more advantageous coating than no treatment test specimen of aluminum. it is concluded that the hard anodizing brake disk has the most improved frictional performance and corrosion characteristics environment.

자동차 연료압력 성형부품의 건전성 평가

박창선(Chang Sun Park),성백섭(Back Sub Sung),차용훈(Yong Hun Cha),박용순(Yong Sun Park) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.5

다이캐스팅 공정은 정밀한 금형에 용탕을 압입시켜 고정도의 주조표면을 갖는 주물을 대량 생산하는 기공방식이다. 성형체의 정밀성과 주조 후처리 과정의 간소화, 자동화의 용이성 등의 장점으로 인해 산업 전반에 걸쳐 널리 사용되고 있다. 본 논문은 LPI 자동차 레귤레이터 제품은 고압의 내압을 받으며, 품질 성능에 따라 자동차의 가장 기본적인 연료공급 시스템의 핵심 역할을 한다. 고품질화된 성형제품 생산을 위하여 결함의 발생원인에 대한 이해를 통해 제조공정에서 발생하는 결함을 예측하고, 특히 오버플로우의 개소에 따라 제품의 성형에 관한 신뢰성을 증명하고자 하였다. This study examined the casting analysis of fuel pressure regulator of LPI vehicles. We aims to predict all the phenomenon accompanied by flow and solidification in die casting, and maximize productivity and quality through optimal casting design. As a result of comparing Types A and B of casting design, it was found that the number of overflow affected flow, flow speed and solidification temperature. And there was a minute difference between solidification temperatures at thick section of the spare parts. Solidification began at temperatures of 624℃ ~ 630℃, but after the casting was completed, temperatures at the center of the parts were 600℃ ~ 614℃. Temperature of molten metal showed optimal flow at temperature of 680℃. It began to solidify around at 650℃, and to be cooled between 580℃ ~ 550℃ in high speed. When the process was analysed through a computer simulation, it was found that hardness of regulators manufactured through Type B of overflow was above H<SUB>R</SUB>60.

Relaxin을 분비하는 아데노바이러스가 피판의 생존에 미치는 영향

윤인식,박용순,전영우,전여름,이원재,윤채옥,나동균,Yun, In-Sik,Park, Yong-Sun,Cheon, Young-Woo,Jeon, Yeo-Reum,Lee, Won-Jai,Yun, Chae-Ok,Rah, Dong-Kyun 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.5

Purpose: Of various effects of relaxin, we assumed that anti-fibrotic effects, neovascularization effects and vasodilatation effects of relaxin might enhance the survival rate of skin flap. In the current study, we used adenovirus expressing relaxin genes to examine whether these genes could enhance the survival rate of a skin flap. Methods: A total of 30 Sprangue-Dawley rats were divided into three groups: RLX group (10; relaxin virus injected group), CTR group (10; no gene coded virus injection group), and PBS group (10; PBS injected group). Each group was intradermally injected with the virus ($10^7$ PFU) and PBS 48 hours before and immediately before the flap elevation. A distally based flap $3{\times}9\;cm$ in size was elevated on the dorsal aspect of each rat. Following this, a flap was placed in the original location and then sutured using a #4-0 Nylon. A surviving area of the flap was measured and then compared on postoperative days 3, 7 and 10. Using a laser Doppler, the amount of blood flow was measured. On postoperative day 10, tissues were harvested for histologic examination and the number of blood vessels was counted. Results: There was a significant increase in the area of the flap survival in the RLX group on postoperative days 3 and 7. The Doppler measurement also showed significantly increased blood flow immediately after the operation and on postoperative days 7 and 10. The number of blood vessels was significantly greater in the RLX group in the tissue harvested on postoperative day 10. The VEGF concentration was significantly higher in the RLX group than others in the tissues harvested on postoperative day 10. Conclusion: Following an analysis of the effects of relaxin-secreting adenovirus on the survival of a flap, the surviving area of the flap and the blood flow also increased. A histopathology also showed an increase in the number of blood vessels and the concentration of VEGF.

고관절 이형성증에 시행한 인공 고관절 전치환술

이중명 ( Lee Jung Myeong ),박용순 ( Park Yong Sun ) 대한고관절학회 2000 Hip and Pelvis Vol.12 No.3