The Effect of Dietary Lipids on CVD Risk Factors in Ovariectomized Rats

Kwon,Ja Ryong,Ahn,Hae Seon,Lee,Sang Sun 韓國營養學會 1997 Journal of Nutrition and Health Vol.30 No.4

자궁내 태아사망의 임상적 고찰

이권해,이정재,조현철,이석민,이임순,이해혁,김권대,이순곤,남계현 순천향의학연구소 1999 Journal of Soonchunhyang Medical Science Vol.5 No.2

Objective: This study was designed to evaluate diagnosis and complication, prognosis during clinical study of cases of intrauterine fetal death. Methods and materials: This is a clinical study of 56 cases of the intrauterine fetal death among 8064 deliveries at Seoul Sunchunhyang university hospital during 5 years from January, 1994 to December, 1998. Results: The incidence was 0.7%. The age distribution of mothers was 18 - 44 years and was highest in the 25 - 29 years range(46.4%). The parity was the most highest in the nulliparous group(51.8%). The most common gestational weeks was 20 - 28 weeks gestational period(46.4%), and most common presentation was cephalic(73.5%). The most common weights of the intrauterine fetal death was from 5,00gm to 1,000g(48.2%). The mode of the most common delivery was the induction of delivery(57.2%). The etiologic factors were: unknown(42.9%), preeclampsia(17.9%), chorioamnionitis(14.3%), congenital anomaly(12.5%), abruptio placenta(7.1%), cord complication(3.6%), placenta previa, death of one for twin. There were 2 cases of maternal complication(DIC, Uterine atony). Conclusion : Intrauterine fetal death should be diagnosised early and treated properly to reduce risk of the maternal complication.

원발성 난소 소세포암 2례

조인숙,남계현,김태희,김정식,이해혁,이권해,권계원 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Two cases of primary small cell carcinoma of the ovary occurred. One was a case of 43-year-old woman associated with hypercalcemia and the other was a case of 40-year-old woman with pulmonary type. Ovarian small cell carcinoma of the hypercalcemic type have clinicopathological, immunohistochemical, ultrastructural, and flow cytometric features that from differ from those of small cell carcinomas of the pulmonary type. It is important for therapeutic reasons to distinguish these two types of ovarian tumors from each other and from a variety of malignant small cell tumors that ovary primarily or secondarily. So, we reported these cases with a brief review of the concerned literatures.

Ethyl 2-Methyl-3-Pyrazinyl-3-oxopropionate의 합성과 케토-엔올 토토머화현상

권순경,박명숙,박해선 德成女子大學校 藥學硏究所 2002 藥學論文誌 Vol.13 No.1

Ethyl 2-methyl-3-pyrazinyl-3-oxopropionate is a key intermediate for the development of new drugs and can be synthesized through Claisen condensation from methyl pyrazine carboxylate and ethyl propionate. Even though in β-diketones esters in general the amount of enol form present at equilibrium is far higher than keto form, this key compound showes that the keto concentration is high. It can be explained because of the electron-releasing effect of α-methyl group.

건설업에 있어서 올바른 품질관리체계 구축과 ISO 9000 인증의 도입방안

권해익 한국의사결정학회 2002 경영과학연구 Vol.11 No.-

The fact is that QC in construction Industry is not practiced comprehensively and systematically because of CEO's low understanding, insufficient system of work contract conclusion between an ordering place and construction company, making a successful minimum-cost bid custom, arbitrarily negotiation of a conduct price and so forth. Also improvements of long term management result as decreasing quality cost by efficient QC is not appeared in spite of increasing companies acquired ISO 9000 certification. Thus we intend to examine problems of means of comprehensive QC to against changes of management environment and to improve competitive power of construction industry related to acquire ISO 9000 certification of means of comprehensive QC to against changes of management environment and to improve competitive power of construction industries. Further more we suggest some programs to advance to quality improvement, custom satisfaction and long-term business outcome by means of exact building of QC system and successful introduction to ISO 9000 certification. In this study, we suggest improvement of QC in construction industries like that : (1) classification of quality test scheme's an essential factor by head office, on-the-spot and head office & field, (2) extension of quality test's agency and building of trust relationship, (3) efficiency increasing of QC costing, (4) integration and activation of ISO 9000 certification institution, (5) trust relation formation between an ordering place and construction company and (6) expansion of quality supervision office.

접종능이 우수하고 페이딩 속도가 느린 구상 흑연 주철용 접종제 개발

권해욱,안종헌,최훈영 嶺南大學校 工業技術硏究所 2003 工業技術硏究所論文集 Vol.31 No.1

The performance of inoculant for ductile cast iron was investigated. The ability and fading rate of inoculant were evaluated through thermal analysis during holding the cast iron melt after the nodularizer and inoculant had been added. The effect of the addition of minor elements was also examined.

鑄鐵의 熔接 : 1970年代 文獻 小考 A Survey during 1970's

權海旭 嶺南大學校 工業技術硏究所 1985 연구보고 Vol.13 No.1

. This study was initiated as a literature search for the paper on the subject published during 1970's. The difficulties most encountered in the welding of iron castings were identified. The problems included: (1) solidlfication and fusion of the weld and base metals, (2) solid state transformation in the heat affected zone, and (3) weld-metal dilution. Solidification was controlled by using low heat input, inoculations, weld metal composition with carbon equivalent close to eutectic, and by slow cooling rates not higher than 10℃/s. Fusion of the base metal was controlled by buttering and low heat input so that a narrow fusion zone with isolated white iron colonies could be obtainted. A direct relationship between preheating, cooling rate and peak HAZ herdness was established. Low heat input, "Quench-weld" techniques, buttering, and the use of nickel electrodes were found to relieve shrikage stress, thus preventing HAZ cracking. Replacing silicon by aluminum/calcium as inoculants were reported to result in a more weldable iron casting. Controlled addition of niobium, which formed stable carbide in the fusion zone and HAZ, was found to improve the weldability in D2 irons which contained 18-20% nickel. weld-metal dilution could be controlled by buttering and limiting heat input. Post-weld heat treatment was found to be less important amidst the improvements in the state of art of iron casting welding. Yet the weldment could still be benefited by a moderate post-weld heat treatment in improving dimensional stability, ductility, and resistance to stress-corrosion cracking. White iron formed in the weldment were found to decompose faster than white iron formed in the casting process, making it possible to take advantage of a production heat-treatment as a concurrent post-weld heat treatment. The technical and economical feasibility of automated iron casting welding was also discussed and was considered to be eminent due to the introdution of flux- cored electrodes, submerged are welding with specific flux additions, and other improvements in conventional technologies.

주철의 미세조직 결함과 그 원인

권해욱 한국주조공학회 2002 한국주조공학회지 Vol.22 No.4

Squash 운동이 성인 여성의 호흡순환기능에 미치는 영향

권해주,김태운,고기준,한재웅,이재규 부산대학교 체육과학연구소 2000 體育科學硏究所 論文集 Vol.16 No.-

The purpose of this research was to change the effects of Squash exercise on cardiopulmonary functions of females. The subject group was made up of 10 females (first start to Squash exercise). After a pretest, the subjects were given an 12-weeks Squash exercise program. Then the subjects were given a posttest and cardiopulmonary functions after 12-weeks of the program. The program schedule was made up of 3days per week, 60minutes per day. The significance level was α=0.05. The following results were statistical data of difference between pre and post-test. 1.HRmax was significantly increased. 2.RFmax was significantly increased. 3.VO2 max was significantly increased.

유치 수복물에 따른 주변 법랑질의 탈회 저항성 : QLF를 이용한 연구

권해숙,현홍근,김영재,김정욱,장기택,김종철,한세현,이상훈 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.1

본 연구에서는 유치 수복물의 불소 방출 여부에 따른 주변 법랑질의 탈회 저항성과 재광화 효과를 살펴보고자 하였다. 건전 유전치 48개를 16개씩 임의로 세 군으로 나누어, FiltekTM Z250(1군), F2000(2군), KetacTM N100(3군)을 사용하여 제조사의 지시에 따라 충전하였다. 3일 동안 인공 우식 병소를 유발한 후, 14일 동안 인공 타액에 담가 재광화를 유발하였다. Quantitative light-induced fluorescence(QLF)를 이용하여 실험 단계와 시간에 따른 무기질 소실량(ΔQ)의 변화를 관찰한 결과는 다음과 같다. 1. 탈회가 일어난 인공 우식 병소의 ΔQ 값은 3군, 2군, 1군 순으로 작게 나타났고, 이 중 3군은 1군에 비해 유의한 탈회 저항성을 보였다. 2. 1군, 2군, 3군 모두 재광화 1일 후부터 초기 인공 우식 병소의 ΔQ 값과 비교 시 유의한 차를 보였으며, 관찰 기간 동안 지속적인 증가 양상을 나타내었다. 3. 재광화 속도를 의미하는 Δ(ΔQ)/일 값은 각 군에서 처음 1일 동안 유의성 있게 크게 나타났으며, 그 이후 급속히 감소하였다. 4. 수복 재료에 따른 재광화 정도는 각 군 간에 유의한 차이가 없었다. The objective of this in vitro study was to detect and monitor demineralization and remineralization of primary teeth according to restorative materials using quantitative light-induced fluorescence (QLF). A single bur hole was drilled on the each sound forty eight primary anterior teeth, and the specimens were divided into three groups. The cavity was restored with FiltekTM Z250(Group 1), F2000(Group 2), KetacTM N100(Group 3) following the manufacturer's instructions. The teeth were subjected to the demineralizing buffer for 3 days, and then subjected to a remineralizing buffer for 14 days. The change of mineral loss(ΔQ) according to the stages was evaluated by QLF and the following results were obtained: 1. When demineralization was done, ΔQ was increased as follows. : Group 1 (-110.79 ± 27.77) < Group 2 (-104.84 ± 28.95) < Group 3 (-90.16 ± 21.87) : Resistance to demineralization was statistically significant in Group 3. 2. There was a statistically significant increase in ΔQ of all groups since 1st day of remineralization 3. The rate of remineralization, Δ(ΔQ)/day, showed significant high value in each group on the 1st day then decreased rapidly. 4. There was no statistically significant difference in the degree of remineralization among restorative materials.