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a-SiOx Buffer Layer 삽입을 통한 고효율 비정질 실리콘 박막태양전지에 관한 및 연구
박승만(Park, Seung-Man),이선화(Lee, Sun-Hwa),공대영(Kong, Dae-Young),이원백(Lee, Wan-Back),정우원(Jung, Wu-Wan),이준신(Yi, Jun-Sin) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.11
TCO/p/i/n 구조의 비정질 실리콘 박막 태양전지의 제작에 있어서 TCO계면과 p층사이의 이종접합에서의 큰 밴드갭 차이는 p층으로부터의 정공 재결합을 통하여 효율 저하의 원인이 된다. 이러한 재결합은 넓은 밴드갭을 가진 물질을 완충층으로 삽입함으로써 개선되어 질 수 있다. 본 논문에서는 비정질 실리콘 보다 넓은 광학적 밴드갭을 가지는 a-SiOx 박막을 완충층으로 사용하여 TCO/P 계면에서의 재결합 감소에 대한 시뮬레이션을 수행하였다. a-SiOX 박막 내에 포함된 산소의 양에 따라 밴드갭을 조절하여 1.8eV~2.0eV 사이의 완충층을 삽입하여 박막태양전지의 개방전압, 단락전류, 효율 등에 끼치는 영향을 ASA 시뮬레이션을 통하여 알아보았다.
홍의석(Eui-seok Hong),박승신(Seung-sin Park),강왕구(Wanggu Kang) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
Shin Young Heavy Industry Co., Ltd. has developed tethered helium balloon for tourism with the technical consulting of KARI(korea aerospace research institute). The tethered helium balloon is becoming more popular in europe for city tourism and advertisement. The tethered balloon can climb up to 150m by the buoyancy of helium gas with 25 passengers. The main system of the tethered helium ballon consists of envelope for lifting gas(helium), gondola for passengers, winch system for operation(climbing & descent) and pressure control system of envelope. All main systems were developed by korean companies and engineers. The development requirement of the balloon system were set-up for domestic regulation and operating This paper summarized the final result of designing, fabrication and functional test of the balloon. The developed balloon will be in installed and make operation in this year.
강왕구(Wanggu Kang),김동민(Dong-min Kim),이장연(Jang-yeon Lee),박승신(Seung-sin Park) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
Aerostat is tethered airship shaped balloon. 32m aerostat is developed by KARI for ground, sea & air surveilance. It has unique structural design features such as buoyancy, tethered vehicle dynamics, membrane envelope material, electro-optical cable mechanics and ground mooring system. This paper specifically addresses the materials and structural design aspects of pressurized buoyant vehicles for tethered 32m aerostat.
강왕구(Wanggu Kang),김동민(Dong-min Kim),김성욱(Seong-Yuk Kim),박승신(Seung-sin Park) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
Tether cable is key component for aerostat system performance. Tether cable connects aerostat and ground mooring equipment, transfer power from ground to aerostat vehicle and transmit communication data between aerostat equipments and mission payload. Tethered aerostats are lighter-than-air aerodynamically shaped balloons for surveillance and many other applications. 32m aerostat can provide a stable platform to mission payloads up to 900m altitude with 300kg weight. Tether cable system should have enough strength and stiffness for tethering and enough electrical capacity and communication bandwidth for aerostat and mission payload operations. Co-axial synthetic cable with optical fiber, electric cable and polymer mechanical cable compound is designed and tested for 32m aerostat. Design requirements and test procedures are defined for each mechanical and electro-optical functions.
卵胞호르몬과 Prostaglandin F_(2α)가 家兎子宮 및 골격근의 Catecholamine 含量에 미치는 影響에 對한 實驗的 硏究
朴勝信,李壽鍾 고려대학교 의과대학 1979 고려대 의대 잡지 Vol.16 No.1
This experimental study was conducted, so as to determine the effects of prostaglandin F₂α on the catecholamine contents in the uterine and skeletal muscle of mature female albino rabbits weighing approximately 2.0 ㎏. Group Ⅰ was normal control group. Group Ⅱ was treated with 100 mcg/㎏ of prostaglandin F₂α. Grouup Ⅲ was preconditioned with 5000 units/㎏ of estrogen and treated with 100 mcg/㎏ of prostaglandin F₂α. Catecholamine content was determined by Shore and Olin method. The results were as follow; 1. The catecholamine content in the normal uterine tissue was 0.33±0.06 mcg/gm (M±S.D.), while that of skeletal muscle tissue was 0.05±0.01 mcg/gm (M±S.D.). The catecholamine content in the uterine tissue was higher than skeletal muscle tissue. 2. In the prostaglandin F₂α treated group, the catecholamine content in the uterine tissue was 1.26±0.54 mcg/gm (M±S.D.), while that in the skeletal muscle tissue was 0.08±0.01 mcg/gm (M±S.D.). The catecholamine content in the uterine and skeletal muscle tissue were significantly increased by administration of prostaglandin F₂α. 3. In the estrogen preconditioned prostaglandin F₂α treated group, the catecholamine content in the uterine tissue was 0.32±0.12mcg/gm (M±S.D.), while that in the skeletal muscle tissue was 0.04±0.02 mcg/gm (M±S.D.). This series was similar to findings of the control group as far as the catecholamine content in both uterine and skeletal muscle tissue were concerned. 4. The catecholamine content in the uterine tissue was markedly increased in the prostaglandin F₂α treated group, whereas there was no change in the estrogen preconditioned prostaglandin F₂α treated group. 5. The catecholamine content in the skeletal muscle tissue showed a marked increase in the prostaglandin F₂α treated group, in contrast to decrease in the estrogen preconditioned prostaglandin F₂α treated group.
朴勝信 고려대학교 의과대학 1976 고려대 의대 잡지 Vol.13 No.1
This clinico-pathological observation on the uterine myoma was based upon 133 cases in the 993 cases of gynecological major operation in the Dept. of Obstetrics and Gynecology, Woo Sok Hospital, College of Medicine, Korea University from the beginning of 1970 to the end of 1974. Results were as follows: 1. Myoma was noted in 13.4% of the total cases of major gynecological operation. 2. The mean age was 44.3 years and the most frequent age was 41-50 years group. Only 3 cases encountered before the age of 30 years. 3. The average age of menarche was 16.2 years. 4. Myoma was the most common in the corpus uteri (86%), and least common in the cervix (10.5%). Intramural type was the most common type of myoma (33.8%), subserous myomas were 30.8% mixed forms were 19.5% and submucous myomas were 15%. 5. Pain in the pelvic region or lower abdomen was the most frequent complaint (58.6%), and the next were abnormal uterine bleeding (40.6%) and palpable mass (54.1%). The submucous and the intramural type of myoma were more common types in the patients with menorrhagia and irregular bleeding, whereas subserous type was the predominent type in dysmenorrhea and pelvic heaviness. 6. hfertility was observed in 47.7% of total cases (primary infertility; 43.5% and secondary infertility; 56.5%) with the highest infertility rate in subserous type. 7. The average hemoglobin value was 10.26gm/㎗ and among those cases 2.2% had severe anemia (less than 6 gm%). 8. The most common associated conditions in myoma were adnexal changes (34%) including ovarian cyst, tumor and P. I. D. 9. The most frequent secondary changes in myoma was hyaline degeneration (10%). No any sarcomatous change had been noticed. 10. The method of treatment was surgical, ie, abdominal hysterectomy (83.4%), vaginal hysterectomy (13.5%), myomectomy (1.5%) and subtotal hysterectomy (1.5%). No operative motality was observed. 11. The postoperative complications were noted as urinary tract infection (6.7%), wound infection (4.5%) and respiratory tract infection (1.5%).