子宮頸部에 미치는 Estriol의 影響에 關한 基礎的 硏究 : 組織學的, 組織化學的 및 電解質 變動에 關하여 Histological, Histochemical Study and Changes of Electrolyte Distribution

鄭容和 中央醫學社 1970 中央醫學 Vol.19 No.5

This paper is an article to study the effect of estriol in the cervix of rat, from chemical, histological and histochemical points of view. The rats were grouped non-pregnant (ovariectomized) and pregnant with injection of progesterone, estradiol and estriol for 6 days 3mg daily, it daily and for daily respectively, and then Sodium, Potassium in cervical tissue were measured and histological, histochem cal findings examined. The results obtained from this study were, as follows: 1) Compared with effect of estradiol, estriol was increased weakly weight of uterine body, but fairy increased weight of uterine cervix. 2) Water content of cervical tissue in case of estriol injection was much more increased than estradiol and progesterone. 3) It is clarified that estriol increased Sodium in cervical tissue but Potassium was not changed significantly. 4) It was proved in every case that effect of estriol were produced remarkably an increase in edema, vascularity. vacuolization of basal epithelium and hypertrophy of cervical gland. 5) In histochemical staining, PAS positive substance, alkaline phosphatase, RNA and DNA were appeared much in the cervical tissue of rat who given estriol than that of progesterone, estradiol.

10Al₂O₃?90SIO₂박막 내에 도핑된 Sm³+ 이오들의 환원거동 및 Sm²+이온들의 광학적 특성

정용화,박성태,장기완,조은진,김상수,김일곤,이용일,김창대 한국물리학회 2002 새물리 Vol.45 No.4

The spin coating techniques was used to coat a 1.4 mol% Sm3+ -doped 10Al2O3 90SiO2 sol solution on silicon substrates with and without a deposited Aluminium layer. Sm2+ -doped 10Al2O3 90SiO2 thin films were finally obtained through heat treatment under a flowing H2 gas at 800 C or in air at 800 C. The sol solution for the spin coating was synthesized by gydrolysis and condensation of Si(OC2H5)4(TEOS), Al(NO3)3 9H2O와 (C2H3O2)3Sm xH2O. The photoluminescence spectra due to the 5D0 7D0 transition of the Sm2+ ions, mearsured at 300K, were highly dependent on the thickness of the deposited aluminum layer and the reduction processes of the Sm3+ ions. 1.4 mol%의 Sm3+가 도핑된 10Al2O3 90SiO2졸 용액을 알루미늄이 증착된 실리콘 기판과 순수 실리콘 기판 위에 스핀 코팅한 후, 수소 분위기와 공기 중에서의 열처리를 통하여 Sm2+도핑된 10Al2O3 90SiO2 박막을 제조하였다. 1.4 mol%의 Sm3+도핑된 10Al2O3 90SiO2 졸 용액은 Si(OC2H5)4(TEOS), Al(NO3)3 9H2O와 (C2H3O2)3Sm xH2O를 사용하여 만들었다. 300K 에서 측정한 Sm2+이온의 5D0 7D0 천이에 기인한 발광 스펙트럼은 실리콘 기판 위에 증착된 알루미늄의 두께 및 Sm3+ 이온이 Sm2+ 이온으로 환원되는 방법에 의존함을 보였다.

도시고속도로 연속류의 교통특성을 고려한 가변속도제어 활성화 방안 - 부산광역시를 중심으로 -

정용화,최양원,임창식,Jeong, Yong-Hwa,Choi, Yang-Won,Lim, Chang-Sik 대한토목학회 2014 대한토목학회논문집 Vol.34 No.2

현재 도로상에서의 최고속도제한은 교통 혼잡이나 기상변화에 대처하기 힘들기 때문에 교통사고를 유발하는 요인이 될 수 있다. 물론 도로교통법에 따르면 악천후 시 20~50% 속도를 감속시켜야 하지만 운전자들의 판단에 맡겨야 하는 어려움이 있고, 감속하는 차량과 하지 않는 차량들간의 상대속도가 달라져서 주행환경과 안전에 큰 영향을 끼친다. 따라서 가변속도제어는 도로상의 운전자들에게 적절한 최고속도제한을 지정해 줌으로서 운전자들이 악천후 시에 감속된 속도로 달리게 하여 사고를 미연에 방지하거나 사고피해 심각도를 낮출 수 있을 거라 예상된다. 본 연구의 목적은 교통사고가 잦은 부산광역시의 연속류(도시고속도로)를 중심으로 적절한 구간에서 가변속도제어가 실시될 수 있도록 교통사고의 특성을 분석하여 사고 심각도를 조사하였다. 그리고 도시고속도로의 기하구조상 많은 곡선부 환경을 가지고 있으므로 평면 곡선부 지점을 건조한 노면과 젖은 노면을 비교 시뮬레이션 해봄으로써 비에 젖은 노면일수록 속도에 따른 사고위험이 크다는 결과를 얻었다. 이러한 결과를 토대로 먼저 도시고속도로에서 기본구간, 터널부근, 램프부근, 요금소 부근, 진 출입부 등 다양한 요인을 고려한 뒤 속도감소가 필요한 구간에서 우선 실시하여 운전자들의 참여의식과 필요성을 인식시키고 향후 도시고속도로 전 구간에 설치 및 운영이 확대되어야 할 것으로 판단된다. Currently the highest speed limit on the road traffic congestion or because you can not cope with climate change to cause a traffic accident may be a factor. According to the Road Traffic Act as well as 20% to 50% in case of inclement weather, but the driver must slow speed left to the judgment of the difficulties, and to slow the vehicle and the relative velocity between the vehicle does not run longer be a big influence on the environment and safety. Thus, variable speed control for drivers on the road, specify the appropriate maximum speed limit in bad weather It keeps motorists slowed the run rate to prevent accidents or reduce the severity of accident damage is expected to be possible. The purpose of this study is the frequent traffic accidents Continuous Busan (City Freeway) around the variable speed control in the appropriate sections so that it can be done by analyzing the characteristics of traffic accidents were the severity of the accident. Highway and urban environment, the geometry of the structure because it has a lot of Curved planar point compared to wet and dry road surfaces by simulated rain wet had bom the more the speed the greater the risk of an accident was the result. Based on these results, the primary section, first urban highway tunnel, near the lamp, near Toll Plaza, near binary Outlet after considering various factors such as speed reduction is needed in the first period by conducting awareness and recognize the need for the participation of the driver and the future city installation and operation of highways in all sectors is expected to be expanded.

금속 증기 발생을 위한 전자기유도 부양가열 코일 설계 기술 개발

정용화,남경훈,엄문종,송명곤 한국표면공학회 2010 한국표면공학회 학술발표회 초록집 Vol.2010 No.11

Constitutive Overexpression of the Calcium Sensor CBL5 Confers Osmotic or Drought Stress Tolerance in Arabidopsis

정용화,Sun Jin Sung,Beom-Gi Kim,Girdhar K. Pandey,조주식,김경남,Sheng Luan 한국분자세포생물학회 2010 Molecules and cells Vol.29 No.2

Calcium serves as a critical messenger in many adaptation and developmental processes. Cellular calcium signals are detected and transmitted by sensor molecules such as calcium-binding proteins. In plants, the calcineurin B-like protein (CBL) family represents a unique group of calcium sensors and plays a key role in decoding calcium tran-sients by specifically interacting with and regulating a fam-ily of CBL-interacting protein kinases (CIPKs). In this study, we report the role of Arabidopsis CBL5 gene in high salt or drought tolerance. CBL5 gene is expressed significantly in green tissues, but not in roots. CBL5 was not induced by abiotic stress conditions such as high salt, drought or low temperature. To determine whether the CBL5 gene plays a role in stress response pathways, we ectopically ex-pressed the CBL5 protein in transgenic Arabidopsis plants (35S-CBL5) and examined plant responses to abiotic stresses. CBL5-overexpressing plants displayed enhanced tolerance to high salt or drought stress. CBL5 overexpres-sion also rendered plants more resistant to high salt or hyperosmotic stress during early development (i.e., seed germination) but did not alter their response to abiscisic acid (ABA). Furthermore, overexpression of CBL5 alters the gene expression of stress gene markers, such as RD29A, RD29B and Kin1 etc. These results suggest that CBL5 may function as a positive regulator of salt or drought responses in plants.

Functions of MAPK Cascade Pathways in Plant Defense Signaling

정용화,김민철 한국식물병리학회 2010 Plant Pathology Journal Vol.26 No.2

Protein phosphorylation is one of the major mechanisms for controlling many cellular processes in all living organisms. Mitogen-activated protein kinase (MAPK)cascades are known to transducer extracellular stimuli to several cellular processes, including cell division,differentiation as well as responses to various stresses. In plants, several studies have revealed that MAPK cascade pathways play an important role in responses against biotic and abiotic stresses, including wounding,pathogen infection, temperature, drought, salinity and plant hormones. It is also known that MAPK cascadesmediated signaling is an essential process in the resistance step to pathogens by regulating the activity of transcription factors. Here, the insights into the functions of MAPK cascade pathways in plant defense response signaling from Arabidopsis, tobacco and rice are described.

투과성 구형 산란체에 대한 전자기파 공진산란이론의 배경성분

정용화,전상봉,안창희 대한전기학회 2005 전기학회논문지C Vol.54 No.8(C)

The Resonance Scattering Theory(RST) provides the physical explanation of the scattered field that appears in the vicinity of the resonance frequency. The theory suggests that the amplitude of each partial-wave mode can be divided into two components ; resonance and non-resonant background. The long-standing difficulty in the application of RST is that it always requires background components. We have applied the RST to the electromagnetic scattering problems by a penetrable spherical scatterer and a cavity. In this paper, we show some numerical results, and validate background coefficients.

원가기획의 경험연수가 원가절감 달성에 미치는 영향

정용화,이창수 한국상업교육학회 2004 상업교육연구 Vol.8 No.-

유럽의 생체인식 연구 동향

정용화,반성범,정교일,Chung, Y.W.,Pan, S.B.,Chung, K.I. 한국전자통신연구원 2002 전자통신동향분석 Vol.17 No.5

21세기를 맞이하면서 정보통신 기술의 발전과 인터넷 이용 확산 등으로 사용자 인증이 중요한 문제로 대두되고 있다. 패스워드 또는 PIN을 이용한 사용자 인증 방법이 현재까지 널리 쓰이고 있으나 타인에게 노출되거나 잊어버리는 등의 문제점이 있다. 이러한 문제를 해결하기 위하여 개인의 고유한 생체정보를 이용한 주요 정보 보호 및 사용자 인증 등의 연구가 활발히 진행되고 있다. 본 고에서는 이러한 연구 활동 중 유럽에서의 생체인식 연구 동향을 소개한다.

2P-110 : 금속담지 촉매를 이용한 아세틸렌의 삼합체 고리화 반응

정용화,박노국,김기석,이태진 한국공업화학회 2003 한국공업화학회 연구논문 초록집 Vol.2003 No.-