http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Han young Jung(정한영),Min ju Chae(채민주),Su Jung Suh(서수정) 한국신재생에너지학회 2021 한국신재생에너지학회 학술대회논문집 Vol.2021 No.7
Recently, transition metal dichalcogenides (TMDs), such as MoS<SUB>2</SUB>, have been considered for application in hydrogen evolution catalysis. However, there is a limit to use as a single MoS<SUB>2</SUB> material due to a low charge transfer rate. In this paper, a MoS<SUB>2</SUB>-Pd-Pt catalyst was fabricated on carbon paper in a simple two-step synthesis method. MoS<SUB>2</SUB> and MoS<SUB>2</SUB>-Pd was synthesized via a simple hydrothermal method, and a small amount of Pt was electrodeposited on the prepared sample using a three-electrode system. The nanostructure of MoS<SUB>2</SUB>-Pd has more defects than the structure of MoS<SUB>2</SUB> and the exposure of active sites is high, which is advantageous for the Pt deposition process. In the Pt electrodeposition process, MoS<SUB>2</SUB>-Pd showed higher deposition efficiency and stability than MoS<SUB>2</SUB> in acidic medium. Although a very small amount of Pt was deposited, the hydrogen evolution reaction (HER) properties of MoS<SUB>2</SUB>-Pd-Pt were significantly improved compared to MoS<SUB>2</SUB>-Pd. Moreover, MoS<SUB>2</SUB>-Pd-Pt exhibited excellent catalytic activity with a lower overpotential (-64 mV at 10 mA/cm2) compared to MoS<SUB>2</SUB> (-253 mV) and MoS<SUB>2</SUB>-Pd (-204 mV), thereby proving it a promising electrocatalyst for the HER as an alternative to Pt.
Ursodeoxycholic acid 의 무정형 초미립자제제들의 CCI4 유도 간손상 생쥐에 대한 보호 효과
정한영(Han Young Chung),김애라(Ae Ra Kim),정해영(Hae Young Chung),곽신성(Sin Seung Kwak),최우식(Woo Sik Choi),이지현(Ji Hyoen Lee),박태현(Tae Hyun Park),김유정(You Jung Kim),김현일(Hyun Il Kim) 한국응용약물학회 2002 Biomolecules & Therapeutics(구 응용약물학회지) Vol.10 No.1
N/A The particle size of medicinal materials is an important physical property that affects the pharmaceutical behaviors such as dissolution, chemical stability, and bioavailability of solid dosage forms. The size reduction of raw medicinal powder is needed to formulate insoluble drugs or slightly soluble medicines and to improve the pharmaceutical properties such as the solubility, the pharmaceutical mixing, and the dispersion. The objective of the present study is to evaluate physiological activity of amorphous and nano-particle preparations of insoluble drug, ursodeoxycholic acid (UDCA), which were made by three types of fine grinding mills. The change of physical properties of ground UDCA was conformed by Mastersiger microplus and X-ray diffraction. We have investigated hepatoprotective effects of the nano-particle preparations of UDCA by planetary mill, vibration rod mill and jet mill in CCl_4-induced oxidatively injured mouse liver. The results showed that nano-particle preparations of UDCA all decreased reactive oxygen sepecies generation and lipid peroxidation in CCl_4-induced oxidative stress mice. Among them, nano-particle preparations by vibration rod mill and jet mill showed more significantly hepatoprotective effects compared to intact UDCA and planetary millground UDCA. These results suggest that ground UDCA with vibration rod mill and jet mill shows a high amorphous state and the improved dissolution.
Docetaxel 투여 후 발생한 조갑하 농양 및 조갑 박리증
정한영 ( Han Young Jung ),이창률 ( Chang Youl Lee ),김형중 ( Hyung Jung Kim ),안철민 ( Chul Min Ahn ),장윤수 ( Yoon Soo Chang ) 대한결핵 및 호흡기학회 2007 Tuberculosis and Respiratory Diseases Vol.62 No.2
Docetaxel is a taxoid antineoplastic drug, which is widely used to treat locally advanced or metastatic non-small cell lung cancer (NSCLC). Among the adverse dermatological reactions, nail disorders such as bending, onycholysis, hypo-or hyperpigmentation are rare. We report a case of a 62-year-old male with advanced NSCLC (cT4N3M1, stage IV), who developed purulent discharge and onycholysis in the nail of all his fingers and the left great toe after five courses of anti-neoplastic chemotherapy, which included docetaxel (cumulative dose: 370 mg/m2, 590 mg). Seven days after the final session of chemotherapy, the patient had become aware of discoloration and swelling of the nail beds with out pain. Three days later, greenish-yellow purulent discharge oozed out from the involved nails. Microbiologic studies revealed Pseudomonas aeruginosa. Intravenous and topical antibiotics (mupirocin) were applied. After 2 weeks, regrown nails were observed and the onycholysis had improved. (Tuberc Respir Dis 2007; 62: 125-128)
정한영(Han-Young Jung),최옥경(Okkyung Choi),예홍진(Hongjin Yeh) 한국컴퓨터정보학회 2012 한국컴퓨터정보학회 학술발표논문집 Vol.20 No.2
최근 소설 네트워크 서비스(Social Netwrok Services)를 활용한 소설 태깅 서비스에 대한 연구가 활발하게 진행 중이다. 특히 태그 기술을 이용한 협력적 태깅 시스템(collaborative tagging system)은 북마크, 문서, 사진, 동영상과 같은 웹 자원을 조직화하고 공유할 수 있는 수단으로 제공하고 있다. 그러나 광고 홍보 목적을 가진 스패머들은 콘텐츠와 관련 없는 태그를 달아 놓아 검색 키워드와 무관한 결과 값이 검색되어 웹 검색 서비스를 이용하는 사용자들에게 불편을 주고 있다. 따라서 본 연구에서는 콘텐츠와 태그의 연관성을 높이기 위해 태그에 일반 사용자가 유사도를 입력할 수 있는 추천 시스템을 적용하여 순위 조작 방지방법을 제안하였다.
정한영(Jung Han-Young),이상호(Lee Sang-Ho),한상철(Han Sang-chul) 한국체육과학회 2006 한국체육과학회지 Vol.15 No.4
The purpose of this study was to investigate change of growth hormone(GH) and Insulin like growth-factor-1(IGF-1) on the exercise intensities(VO₂max80%,60%,4O%).Ten healthy high school student(age:14.70±4.8 ,height:167± 4.52㎝, weight:57.00± 6.11㎏, Body fat:14.32±3.77%)volunteered to participate in this study. pre- post exercise(recovery:30min.60min)blood samples were obtained and analyzed for growth hormone (GH),Insulin like growth factor -1(IGF-1), Plasma growth hormone level was significantly increased after post exercise in 60% VO₂max, and there was no different in both exercise intensity (40%,80% VO₂max). Plasma IGF -1 level was increased after VO₂max 60% at immediate post exercise, No significant changes in plasma IGH-1 level were observed with three treatment These data indicate that 60% VO₂max exercise intensity is a more important of GH, IGH-1 hormone release than the 40%, 80% VO₂max exercise intensity.