태양광 물 분해를 통한 수소 생산용 Cu₂O/CuO 이종접합 광전극의 제작 및 광전기화학적 특성

김소영,김효진,홍순구,김도진,Kim, Soyoung,Kim, Hyojin,Hong, Soon-Ku,Kim, Dojin 한국재료학회 2016 한국재료학회지 Vol.26 No.11

We report on the fabrication and characterization of a novel $Cu_2O/CuO$ heterojunction structure with CuO nanorods embedded in $Cu_2O$ thin film as an efficient photocathode for photoelectrochemical (PEC) solar water splitting. A CuO nanorod array was first prepared on an indium-tin-oxide-coated glass substrate via a seed-mediated hydrothermal synthesis method; then, a $Cu_2O$ thin film was electrodeposited onto the CuO nanorod array to form an oxide semiconductor heterostructure. The crystalline phases and morphologies of the heterojunction materials were examined using X-ray diffraction and scanning electron microscopy, as well as Raman scattering. The PEC properties of the fabricated $Cu_2O/CuO$ heterojunction photocathode were evaluated by photocurrent conversion efficiency measurements under white light illumination. From the observed PEC current density versus voltage (J-V) behavior, the $Cu_2O/CuO$ photocathode was found to exhibit negligible dark current and high photocurrent density, e.g. $-1.05mA/cm^2$ at -0.6 V vs. $Hg/HgCl_2$ in $1mM\;Na_2SO_4$ electrolyte, revealing the effective operation of the oxide heterostructure. The photocurrent conversion efficiency of the $Cu_2O/CuO$ photocathode was estimated to be 1.27% at -0.6 V vs. $Hg/HgCl_2$. Moreover, the PEC current density versus time (J-T) profile measured at -0.5 V vs. $Hg/HgCl_2$ on the $Cu_2O/CuO$ photocathode indicated a 3-fold increase in the photocurrent density compared to that of a simple $Cu_2O$ thin film photocathode. The improved PEC performance was attributed to a certain synergistic effect of the bilayer heterostructure on the light absorption and electron-hole recombination processes.

다가불포화지방산의 공역이중결합 유도체가 흰쥐의 혈청 지질 성분에 미치는 영향

김소영,김성희,김경업,Kim, So-Young,Kim, Sung-Hee,Kim, Gyeong-Eup 한국식품영양과학회 2007 한국식품영양과학회지 Vol.36 No.9

n-6계 linoleic acid의 함량이 높은 옥수수유 및 n-3계 linolenic acid의 함량이 높은 들깨유와 함유된 다가불포화지방산을 공역이중결합 유도체화 처리한 옥수수유 및 들깨유가 흰쥐의 혈청 지질개선에 미치는 영향을 비교 검토하기 위하여 S.D.계 숫 흰쥐에게 돈지 식이를 대조군으로 하고 옥수수유 10%, 들깨유 10%, 유도체화 처리한 옥수수유 10% 및 유도체화 처리한 들깨유 10%을 급여하여 4주간 실험 사육한 후 혈청 지질성분을 분석하였다. 유도체화 처리한 옥수수유(TCO)는 가스 크로마토그래피에 의해 3개의 linoleic acid의 유도체가 확인되었고 유도체화 처리한 들깨유(TPO)에서는 5개의 linolenic acid의 유도체가 확인되었다. 체중증가량 및 식이섭취량은 유도체화 처리한 옥수수유 및 들깨유 급여군에서 유의성 있게 낮았다. 혈청 총콜레스테롤 농도는 대조군에 비해 전실험군에서 유의성 있게 낮았으며, 특히 유도체화 처리한 옥수수유 및 들깨유 급여군에서 더욱 낮았다. HDL-콜레스테롤 농도는 대조군에 비해 전실험군에서 유의적으로 높았다. 혈청 LDL 및 LDL-콜레스테롤 농도는 대조군에 비해 전실험군에서 유의성 있게 낮았으며 유도체화 처리한 옥수수유 및 들깨유 급여군에서 더욱 낮은 경향을 보였고, 특히 유도체화 처리한 들깨유 급여군에서 가장 낮았다. VLDL 농도는 대조군에 비해 전실험군에서 유의성 있게 낮았으며, chylomicron 농도는 유도체화 처리한 유지 급여군에서 유의성 있게 낮았고 특히 유도체화 처리한 들깨유 급여군에서 가장 낮았다. 혈청 유리콜레스테롤 농도는 대조군에 비해 전 실험군간에 유의적인 차이는 없는 반면 유도체화 처리한 옥수수유 및 들깨유 급여군에서 약간 낮았다. 혈청 중성지질 농도는 대조군에 비해 전실험군에서 유의성 있게 낮았으며, 특히 유도체화 처리한 들깨유 급여군에서 가장 낮았다. 인지질 농도는 옥수수유 급여군이 대조군에 비해 약간 높게 나타난 반면 유도체화 처리한 유지 급여군은 약간 낮은 수준이었다. 이상의 결과 n-6계 linoleic acid의 함량이 높은 옥수수유 및 n-3계 linolenic acid 함량이 높은 들깨유의 공역이중결합유도체의 섭취는 혈중 총콜레스테롤, LDL-콜레스테롤, chylomicron 및 중성지질 농도를 감소시킴으로써 혈청 지질 개선효과가 있는 것으로 나타났으며, 특히 n-3계 들깨유의 공역이중결합 유도체 급여군이 혈청 지질 개선효과가 가장 큰 것으로 나타났다. This study was designed to examine the effects of n-6 PUFA rich corn oil, n-3 PUFA rich perilla oil and their conjugated double bond derivatives on serum lipids status in rats. Experimental diets containing lard (control), corn oil (CO), perilla oil (PO), conjugated double bond derivatives of n-6 PUFA rich corn oil (TCO) and n-3 PUFA rich perilla oil (TPO) at the level of 10% (w/w) were fed to male Sprague Dawley rats for 4 weeks. TCO was found to have three derivatives of linoleic acid and TPO had five derivatives of linolenic acid by GC. Serum total cholesterol levels were significantly lower in the all experimental groups than in the control group, and particularly, the lowest in TCO and TPO groups. HDL-cholesterol concentrations were a little higher in the all experimental groups than in the control group, and TCO and TPO groups were not significantly different from CO and PO groups. Serum LDL, LDL-cholesterol, chylomicron and triglyceride concentrations were significantly lower in the all experimental groups than in the control group, remarkably lower in TCO group and particularly, the lowest in the TPO group. Serum free cholesterol and cholesteryl ester concentrations were lower in TCO and TPO groups than in CO and PO groups. From the above research, TCO and TPO groups were effective on the improvement of the lipid compositions in serum and particularly, TPO group was the most effective on the improvement of serum lipids.

진료를 받는 고혈압 환자의 혈압 조절과 관련된 의사 요인

김소영,조인숙,이재호,김지현,이은정,박종혁,이진석,김윤,Kim, So-Young,Cho, In-Sook,Lee, Jae-Ho,Kim, Ji-Hyun,Lee, Eun-Jung,Park, Jong-Hyock,Lee, Jin-Seok,Kim, Yoon 대한예방의학회 2007 예방의학회지 Vol.40 No.6

Objectives : Little is known about the physician-related factors that are associated with the management of Hypertension. The purpose of this study was to determine the physician-related factors associated with blood pressure control in hypertensive patients. Methods : We surveyed 154 physicians at 117 public health (subhealth) centers in Gyeonggi-do, Forty-one physicians completed the survey (response rates : 26.6%) and 31 physicians were finally included as the study subjects. Using the information obtained from the self-reported survey, we measured the physician-related factors associated with hypertension control, including their perception of hypertension, prescription patterns (combination prescription rates, specific antihypertensives prescription rates among patients with diabetes mellitus), and sociodemographic factors. We then collected data on blood pressure and medication use in patients seen by these physicians from the health center#s information system. We compared the physicians# perceived hypertension control rates with the actual rates, and then evaluated the rate of high overestimation (overestimation by more than 25% of the median degree of hypertension control rate overestimation) among the physicians. The physicians# antihypertensive prescription patterns were also evaluated. Multiple logistic regression analysis was used to evaluate the independent association between hypertension control and physician-related factors. Results : The physicians tended to overestimate the proportion of their patients with controlled blood pressure (79.5% perceived vs. 57.8% actual). The percentage of physicians with high overestimation was 35.5% (11 physicians). The physicians with lower control rates were more likely to highly overestimate their patients# control rates. Physicians with below-median actual control rates tended to prescribe fewer combination treatments for patients with uncontrolled blood pressure and angiotensin-converting enzyme inhibitors or fewer angiotensin receptor blockers for patients with diabetes mellitus. The rate of high overestimation by physicians was 1.31 times higher in patients with uncontrolled blood pressure than in patients with other conditions (OR=1.31, 95% CI : 1.17-1.48). Conclusions : Physicians have a tendency to overestimate the rates of hypertension control in their patients. Because physicians have a direct role in treatment outcomes, physicians# overestimation about hypertension management contributes to inadequate blood pressure control. Thus, interventions for improving physician# awareness regarding the management of patients with hypertension are needed.

갈색거저리(Tenebrio molitor) 유충의 냉장 저장 중 산화 안정성에 관한 연구

김소영,손양주,김수희,김안나,이금양,황인경,Kim, So-Young,Son, Yang-Ju,Kim, Soo-Hee,Kim, An-Na,Lee, Geum-Yang,Hwang, In-Kyeong 한국식품조리과학회 2015 한국식품조리과학회지 Vol.31 No.1

The purpose of this study was to evaluate the changes on the characteristics of the oxidative stability of Tenebrio molitor larvae during cold storage at $4^{\circ}C$. Pretreatment for T. molitor larvae was designed into three methods: raw (R), freeze-dried (F.D.), and pan-fried (P.F.). The water content of the raw sample (61.46%) was higher than those of other samples (F.D.: 5.02%, P.F.: 3.67%) and its high water content was expected to facilitate the oxidation of the raw sample. In our results, the peroxide value and the carbonyl value of all of the samples increased and the raw sample, after storage for 18 day, showed the highest value. The pan-fried sample had no significant increase in its lactic acid content, acid value, and thiobarbituric acid value; whereas those values were increased in the raw sample and the freeze-dried sample (p<0.05). The browning reaction was more progressed in the pan-fried sample than other samples at 0 day, but there was no significant change during the storage. The raw sample and the freeze-dried sample had their browning indexes increase with the increasing storage period (p<0.05). The pan-fried sample produced less oxidation products than the freeze-dried sample, indicating that the unheated sample was more susceptible to oxidation than the heated samples. In conclusion, heating treatment and low water content would be effective for improving the safety and stability of T. molitor larvae during cold storage.

남매에서 비슷한 시기에 발생한 Henoch-$Sch{\ddot{o}}nlein$ 자반증 2례

김소영,임인석,유병훈,Kim, So-Young,Lim, In-Seok,Yoo, Byoung-Hoon 대한소아신장학회 2000 Childhood kidney diseases Vol.4 No.2

저자들은 남매에서 3주 정도의 차이를 둔 비슷한 시기에 피부의 자반성 구진, 관절의 부종 및 관절통을 주소로 내원하여 HS 자반증으로 진단받은 두명의 환아를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Henoch-$Sch{\ddot{o}}nlein$ purpura(HSP) frequently follows upper respiratory infection, and one of the causes of this discase is inferred to $\beta$-hemolytic streptococcal infection, but the relationship is still unclear. familial tendency of this disease is unclear, too. Also genetic relationship of this disease has been in a controversy yet. We experienced two cases of HSP in brother and sister at similar period, and report this case with review of related literatures.

초･중･고 학교급별 학부모 학교참여 관련요인

김소영,진미정,Kim,Soyoung,Chin,Meejung 한국가족학회 2015 가족과 문화 Vol.27 No.2

본 연구의 목적은 초･중･고등학생 학부모의 학교참여 수준에 차이가 있는지 조사하고, 학 교급별로 학부모의 학교활동 참여와 관련이 있는 사회‧인구학적 요인, 자녀 관련 요인, 참여 동기 요인을 밝히고자 하는 것이다. 이를 위해 첫 자녀가 전국 초･중･고등학교에 재학 중인 학부모 1,500명의 설문조사 자료를 활용하여 기술통계분석, 일원분산분석, 위계적 다중회귀 분석을 실시한 결과는 다음과 같다. 첫째, 초등학생 학부모의 학교참여정도가 중･고등학생 학부모에 비해 유의미하게 높았다. 둘째, 초등학생과 중학생 학부모는 아버지에 비해 어머니 가, 학력과 가구소득이 높을수록, 대도시보다는 중소도시나 읍면지역에 거주할 때 학교참여 활동이 활발한 반면, 고등학생 학부모에게서는 사회‧인구학적 특성에 따라 학교참여에서 차이가 나타나지 않았다. 다만 맞벌이인 학부모는 모든 학교급에서 학교참여 정도가 낮았다. 셋째, 자녀 관련 요인 중에서는 성적만이 유일하게 초등학생 학부모의 학교활동 참여와 관련이 있었다. 넷째, 학부모의 학교참여 동기는 모든 학교급에서 학교참여를 결정하는 중요한 요인으로 밝혀졌으나, 학교급에 따라 영향을 미치는 동기는 달라지는 것으로 나타났다. 이러한 연구결과를 바탕으로 초등학교, 중학교, 고등학교에서 학부모의 학교참여를 독려하기 위해 맞춤화된 전략을 수립할 수 있을 것으로 기대한다. The purpose of this study was to investigate the sociodemographic, child-related, and motivational factors that were associated with parents' participation in school-based involvement, and find out whether the association differed among parents of elementary, middle and high school students. Findings from the analysis of data from a total of 1,500 parents who had at least one child in elementary, middle or high schools were as follows. Firstly, parents of elementary school students were more active in school-based involvement than parents of middle or high school students. Secondly, among parents of elementary and middle school students, mothers who were better educated, more affluent, and resided in small and medium sized cities tended to be more involved in school-based activities, whereas such factors rarely predicted parental involvement of high school students. Maternal employment was negatively associated with parental school-based involvement in all schools. Thirdly, out of child-related factors, only the child's school grades were associated with school-based involvement for parents of elementary school students. Fourthly, psychological motivations turned out to be the most powerful predictors of school-based involvement for parents of students in all ages, but different motivations functioned behind parental involvement in different school levels. Such findings are expected to contribute to developing customized strategies to promote parents' school-based involvement in elementary, middle, and high schools.

만나고 싶었습니다-슈퍼컴퓨팅사업팀

김소영,Kim, So-Yeong 한국과학기술정보연구원 2006 지식정보인프라 Vol.21 No.-

천문우주, 생명과학과 같은 첨단 R&D에서부터 TV나 김치냉장고 같은 가전제품에 이르기까지 슈퍼컴퓨터의 활용영역이 급속히 확장되고 있다. 그리고 이제 한 나라의 과학기술 수준을 가늠하는 척도로까지 부각되고 있는 슈퍼컴퓨터. 이토록 중요성을 더해가는 슈퍼컴퓨팅의 모든 것을 처음부터 끝까지 이끌고 가다듬고 최적화하는 '슈퍼컴퓨팅의 브레인'들이 바로 KISTI 슈터컴퓨팅사업팀 사람들이다.

Financial Panic and Exchange Rate Overshooting during Currency Crises

김소영,Sunghyun Henry Kim 한국국제경제학회 2007 International Economic Journal Vol.21 No.1

During currency crises, some currencies depreciate more than the post-crisis exchange rate level, which can be described as exchange rate overshooting. Previous studies have claimed that a tight monetary policy, represented by an increase in the interest rate, stabilizes an exchange rate by causing currency appreciation, thereby explaining overshooting. This paper tests the hypothesis that overshooting simply reflects the overreaction of investors due to financial panic during currency crises, regardless of subsequent domestic policies. Empirical results suggest that: (1) the positive relationship between monetary tightening and the overshooting measure is very sensitive to sample selection; and (2) the measure of financial panic has a significant and positive relationship with the measure of overshooting in non-European countries.

낙농인 교육 - 소가 웃는 행복한 나라

김소영,Kim, So-Yeong 한국낙농육우협회 2016 낙농·육우 Vol.36 No.1

동이 트기도 전, 어둑어둑한 새벽 인천공항으로 향하는 버스에 몸을 실었다. 어린 아들을 두고 떠나는 걱정되는 마음과 꿈에 그리던 나라로 떠난다는 설레는 마음으로 복잡했다. 그런 마음을 아는지 남편은 아무 걱정 없이 다녀오라는 말을 건네며 인사해 주었다. 12시간 긴 비행을 마치고 드디어 네덜란드 땅을 밟는 순간 차가운 바람이 코끝을 스치며 기분이 상쾌했다. 앞으로의 일정이 기대되는 순간이었다.

올레핀 촉진수송 분리막용 AgCF₃SO₃를 활용한 PEBAX-2533/Ag Salt/Al(NO₃)₃ 복합체

김소영,강상욱,Kim, Soyoung,Kang, Sang Wook 한국막학회 2021 멤브레인 Vol.31 No.1

본 연구는 현재 올레핀/파라핀 분리에서 사용되는 극저온 분리법을 대체하기 위한 촉진수송 분리막에 대한 연구이다. 촉진수송 분리 막을 상업화하기 위해서는 비용 절감 또한 매우 중요한 요소이다. 하지만 많은 연구가 이루어지고 있는 AgBF4는 상대적으로 고가인 은 염이기 때문에 이를 대체하기 위해 비교적 저렴한 AgCF3SO3를 이용하여 PEBAX-2533/AgCF3SO3/Al(NO3)3 복합막을 제조하였다. 분리막의 특성은 SEM, FT-IR, RAMAN을 통해 분석되었으며, 이번 연구를 통해 고분자 매트릭스가 장기 안정성에 영향을 준다는 사실을 확인하였다. This study was a study on an facilitated transport membrane to replace the cryogenic separation method currently used in olefin/paraffin separation. Cost reduction is also a very important factor to commercialize facilitated transport membranes. However, AgBF4, which has been studied a lot, is a relatively expensive silver salt. To replace this, a PEBAX-2533/ AgCF3SO3/Al(NO3)3 composite film was prepared using relatively inexpensive AgCF3SO3. It was analyzed through SEM, FT-IR, and RAMAN. Through this study, it was confirmed that the polymer matrix affects the long-term stability.