http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로
조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6
Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.
전형주,김병삼,방두열 순천대학교 공업기술연구소 1998 工業技術硏究所論文集 Vol.12 No.-
The problem of sound radiation from infinite elastic beams under the action of harmonic moving line forces is studied. The reaction due to fluid loading on the vibratory response of the beam is taken into account. The beam is assumed to occupy the plane z=0 and to be axially infinite. The beam material and elastic foundation are assumed to be lossless and to follow Bernoulli-Euler beam theory including a tension force (T), damping coefficient (C) and stiffness of foundation (K_S). The non-dimensional sound power is derived through integration of the surface intensity distribution over the entire beam. The expression for sound power is integrated numerically and the results are examined as a function of Mach number(M), wavenumber ratio(r) and stiffness factor(T). Here, the purpose is to explain the response of sound power over a number of non-dimensional parameters describing tension, stiffness, damping and foundation stiffness.
Kim, Jeonghun,Koh, Jong Kwan,Kim, Byeonggwan,Ahn, Sung Hoon,Ahn, Hyungju,Ryu, Du Yeol,Kim, Jong Hak,Kim, Eunkyoung WILEY‐VCH Verlag 2011 Advanced Functional Materials Vol.21 No.24
<P>An iodine‐free solid‐state dye‐sensitized solar cell (ssDSSC) with 6.8% efficiency can be fabricated using conductive polymers and organized mesoporous TiO<SUB>2</SUB>. On page 4633, Eunkyoung Kim, Jong Hak Kim, and co‐workers show the effects of polymer conductivity and transmittance of the interfacial TiO<SUB>2</SUB> layer on energy conversion efficiency. This method can be used for the fabrication of various photovoltaic cells. </P>
cDNA Cloning and Expression of Human Rotavirus Outer Capsid Protein VP7 in Insect Cells
( Du Kyung Kang,Ki Wan Kim,Pyeung Hyun Kim,Seung Yong Seoung,Yong Hee Kim,Ick Chan Kwon,Seo Young Jeong,Eui Yeol Choi,Kyung Mee Lee,Hyun Sook Kim,Eui Chong Kim,Sai Ick Joo,Jai Myung Yang ) 한국미생물생명공학회 1998 Journal of microbiology and biotechnology Vol.8 No.4
Kim, Do Hyun,Park, Min Su,Kim, Na Un,Ryu, Du Yeol,Kim, Jong Hak American Chemical Society 2018 Macromolecules Vol.51 No.15
<P>CO<SUB>2</SUB> separation technology using polymeric membranes has emerged as a viable solution to mitigate the rapidly increasing anthropogenic CO<SUB>2</SUB> emissions, which are directly linked to global warming and climate anomalies. However, in order to improve the gas separation performance, an intrinsic problem of polymeric membranes, i.e., a trade-off relationship between permeability and selectivity, needs to be addressed. In this study, a solid-state facilitated transport membrane is prepared by blending CO<SUB>2</SUB>-philic, amine-compatible poly(vinyl alcohol)-<I>g</I>-poly(oxyethylene methacrylate) (PVA-<I>g</I>-POEM) graft copolymer and diethylenetriamine (DETA) carriers. The graft copolymer consisting of PVA main chains and POEM side chains is synthesized via one-pot free radical polymerization and used as a polymer matrix. With the incorporation of 10 wt % of DETA into the polymer, the membrane exhibits a high CO<SUB>2</SUB> permeance of 402.5 GPU (1 GPU = 10<SUP>-6</SUP> cm<SUP>3</SUP>(STP)/(s·cm<SUP>2</SUP>·cmHg)) and CO<SUB>2</SUB>/N<SUB>2</SUB> selectivity of 52.1. The enhanced performance of the membrane results from multifunctional amine carriers in the graft copolymer owing to facilitated transport of CO<SUB>2</SUB> and an increase in the crystallinity of the polymer. DETA acts as a seed for crystallization of PVA chains at a low loading, which leads to a reduced N<SUB>2</SUB> permeance. The membrane exhibits good stability without any performance degradation over 2 weeks in the solid state. The superior separation property of the PVA-<I>g</I>-POEM membrane containing DETA distinguishes this facilitated transport membrane from other similar membranes and commercial membranes.</P> [FIG OMISSION]</BR>
Kim, Du Yeol,Lee, Hajin,Jeong, Soon Ki Trans Tech Publications, Ltd. 2019 Materials science forum Vol.947 No.-
<P>In this study, ball-milled zinc hexacyanoferrate (ZnHCF) active materials, a Prussian blue analogues (PBAs), were applied in the aqueous rechargeable calcium-ion battery (ARCIB) system. X-ray diffraction (XRD) analysis confirmed that there was no structural destruction of the ZnHCF active materials upon ball milling. A comparison of the pristine and ball-milled ZnHCF active materials by scanning electron microscopy (SEM) confirmed that the ball-milled ZnHCF active material particles were smaller than those of the pristine material. The highest initial charge/discharge capacity was observed on the electrode based on the ZnHCF active material that was ball-milled for 9 h. As the time of the ball mill process was reduced, the initial charge/discharge capacity of the electrodes gradually decreased. XRD and SEM confirmed the eventual collapse of the electrode structure, which explained why the increased capacity of the ARCIB system was not sustained.</P>
( Kwan Yeol Yang ),( Du Hyeong Hwang ),( Abid Mehmood Yousaf ),( Dong Wuk Kim ),( Young Jun Shin ),( Ok Nam Bae ),( Yong Ii Kim ),( Jong Oh Kim ),( Chul Soon Yong ),( Han Gon Choi ) 영남대학교 약품개발연구소 2013 영남대학교 약품개발연구소 연구업적집 Vol.23 No.0
BACKGROUND: The purpose of this study was to develop a novel silymarin-loaded solid nanoparticle system with enhanced oral bioavailability and an ability to provide excellent hepatic protection for poorly water-soluble drugs using Shirasu porous glass (SPG) membrane emulsification and a spray-drying technique. METHODS: A silymarin-loaded liquid nanoemulsion was formulated by applying the SPG membrane emulsification technique. This was further converted into solid state nanosized particles by the spray-drying technique. The physicochemicalcharacteristics of these nanoparticles were determined by scanning electron microscopy, differential scanning calorimetry, and powder X-ray diffraction. Their dissolution, bioavailability, and hepatoprotective activity in rats were assessed by comparison with a commercially available silymarin-loaded product. RESULTS: Formulation of a silymarin-loaded nanoemulsion, comprising silymarin, castor oil, polyvinylpyrrolidone, Transcutol HP, Tween 80, and water at a weight ratio of 5/3/3/1.25/1.25/100 was accomplished using an SPG membrane emulsification technique at an agitator speed of 700 rpm, a feed pressure of 15 kPa, and a continuous phase temperature of 25°C. This resulted in generation of comparatively uniform emulsion globules with a narrow size distribution. Moreover, the silymarin-loaded solid nanoparticles, containing silymarin/castor oil/polyvinylpyrrolidone/Transcutol HP/Tween 80 at a weight ratio of 5/3/3/1.25/1.25, improved about 1,300-fold drug solubility and retained a mean size of about 210 nm. Silymarin was located in unaltered crystalline form in the nanoparticles. The drug dissolved rapidly from the nanoparticles, reaching nearly 80% within 15 minutes, indicating three-fold better dissolution than that of the commercial product. Further, the nanoparticles showed a considerably shorter time to peak concentration, a greater area under the concentration-time curve, and a higher maximum concentration of silymarin compared with the commercial product (P < 0.05). In particular, the area under the concentration-time curve of the drug provided by the nanoparticles was approximately 1.3-fold greater than that of the commercial product. In addition, the silymarin-loaded nanoparticles significantly reduced carbon tetrachloride-induced hepatotoxicity, indicating improved bioactivity compared with silymarin powder and the commercial product. CONCLUSION: Silymarin-loaded nanoparticles developed using SPG membrane emulsification and spray-drying techniques could be a useful system for delivery of poorly water-soluble silymarin while affording excellent hepatic protection.
김두한 ( Du-han Kim ),이경환 ( Kyeong-hwan Lee ),김철수 ( Cheol-soo Kim ),양광열 ( Gwang-yeol Yang ),최창현 ( Chang-hyun Choi ),최태현 ( Tae-hyun Choi ),김용주 ( Yong-joo Kim ) 한국농업기계학회 2016 한국농업기계학회 학술발표논문집 Vol.21 No.2
작물은 급격히 변하는 기후환경에 따라 수확량의 수급 불균형을 초래하며 작물의 가격불안을 유발한다. 따라서 기후의 급변으로 인한 작물의 수확량 피해를 줄이기 위하여 특수한 환경에서의 기상데이터 획득에서 오는 문제점들을 극복하기 위한 안정적이고 효율적인 생육환경 모니터링 시스템을 개발하고자 한다. 생육환경 모니터링 시스템을 구성하는 센서로는 외기 온·습도센서, 토양 온·습도센서, 조도센서, GPS센서로 구성하였으며 데이터 수집 장치는 Arduino(Mega, Italy)를 이용하였다. 실험방법은 노지에 생육환경 모니터링 시스템을 설치 한 후 환경에 따른 센서의 데이터 값을 얻어서 기상청과의 관계를 분석하였다. 데이터 수집을 통한 비교 분석 방법은 모든 환경과 장소를 통일하여 오전, 오후로 나눠서 각 센서별로 비교하여 분석하였다. 실제 계측한 값과 기상청 데이터를 비교한 결과 각 센서의 데이터 값이 유사한 경향을 보이는 것을 확인 할 수 있었으나, 일부 오차가 발생하였으며, 이는 기상청의 측정 지역과 생육환경 모니터링 시스템을 이용한 측정지역과의 거리 차이가 있기 때문으로 판단된다. 특히, 생육환경 모니터링 시스템은 기상청에서 약 3km 거리가 떨어진 충남대학교 부속 농장 노지에서 측정하였으며, 측정한 장소가 황량한 노지이기 때문에 햇빛에 직접적으로 노출이 많아 차이가 크게 나타난 것으로 판단되었다. 본 연구에서 개발한 생육환경 모니터링 시스템은 농장 관리자에게 유용한 생육정보를 제공할 것으로 판단된다.