<tex> ${\rm TmBa}_{2}{\rm Cu}_{3}{\rm O}_{7-{\rm x}}$</tex> Superconducting Thin Films Grown by Pulsed Laser Deposition

Rock-Kil Ko,O-Jong Kwon,Kyu-Jeong Song,Ahmad, D.,Chan Park,Joon-Ho Lee,Seung-Su An,Nam-Jin Lee,Sang-Soo Oh,Young-Cheol Kim Institute of Electrical and Electronics Engineers 2007 IEEE transactions on applied superconductivity Vol.17 No.2

<P>TmBa<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>7</SUB> <SUB>-</SUB> <SUB>x</SUB> films which is one of the (Rare earth)Ba<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>7</SUB> <SUB>-</SUB> <SUB>x</SUB> high temperature superconductors with small ionic radius of rare earth element, were deposited on STO (100) single crystal substrates and Y<SUB>2</SUB>O<SUB>3</SUB>/YSZ/CeO<SUB>2</SUB> buffered metal substrates by pulsed laser deposition. The J<SUB>c</SUB> (77 K) and the value of onset of Tc TmBCO thin film on STO substrate was 4.5 MA/cm<SUP>2</SUP> and 86 K, respectively. The of J<SUB>c</SUB> TmBCO coated conductor on metal substrate was 1 MA/cm<SUP>2</SUP> . In-field property measurement was carried out at temperatures between 10 K and 77 K in magnetic filed up to 6 T in PPMS system. This is the first report, to the best of our knowledge, of TmBCO thin films and coated conductors with TmBCO film as the superconducting layer which have critical current densities at 77 K of 4.5 MA/ cm<SUP>2</SUP> and 1 MA/cm<SUP>2</SUP> , respectively. The superconducting properties of TmBCO films and the possibility of using TmBCO film as the superconducting layer of the HTS coated conductor, were investigated.</P>

Thermoset polyester droplet-based microfluidic devices for high frequency generation

Kim, Jin-young,deMello, Andrew J.,Chang, Soo-Ik,Hong, Jongin,O'Hare, Danny Royal Society of Chemistry 2011 Lab on a chip Vol.11 No.23

<P>The vast majority of droplet-based microfluidic devices are made from polydimethylsiloxane (PDMS). Unfortunately PDMS is not suitable for high frequency droplet generation at high operating pressure due to its low shear modulus. In this paper, we report the fabrication and testing of microfluidic devices using thermoset polyester (TPE). The optical characteristics of the fabricated devices were assessed and substrate resistance to pressure also investigated. TPE devices bonded using an O<SUB>2</SUB> plasma treated PET substrate at 76 °C were shown to function efficiently at pressures up to 18 MPa. TPE material retains many of the attractive features of PDMS such as ease of fabrication but significantly, has superior mechanical properties. The improved resistance of TPE to high pressures enabled investigation of high frequency droplet generation as a function of a wide range of flow-rates with three different oils as continuous phase.</P> <P>Graphic Abstract</P><P>Droplet-based microfluidic devices to withstand high pressure have been successfully fabricated using thermoset polyester (TPE) materials for high frequency generation of droplets. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1lc20603f'> </P>

Graphene paper with controlled pore structure for high-performance cathodes in Li–O₂ batteries

Kim, Do Youb,Kim, Mokwon,Kim, Dong Wook,Suk, Jungdon,Park, Jung Jin,Park, O Ok,Kang, Yongku Elsevier 2016 Carbon Vol.100 No.-

<P>In non-aqueous Li-O-2 batteries, relatively large amounts of discharge products are formed on air cathodes. As such, the expansion of air cathodes is a critical issue that remains to be solved. Here, we report the fabrication of highly porous free-standing graphene paper by introducing macropores within the paper using polystyrene colloidal particles as a sacrificial template. The as-prepared macroporous graphene paper (mp-GP) have a large BrunauereEmmetteTeller (BET) surface area (ca. 373 m(2) g(-1)), a large pore volume (ca. 10.9 cm(3) g(-1)), and a high porosity (91.6%). Owing to the high surface area and large pore volume, the mp-GPs exhibit a high specific capacity of ca. 12,200 mAh g(-1) at a current density of 200 mA g(-1), as well as good rate capability, when used as an air cathode in a non-aqueous Li-O-2 battery. Moreover, the mp-GP shows good stability up to 100 and 78 cycles at a current density of 500 mA g(-1) and 2000 mA g(-1) respectively, with a limiting capacity of 1000 mAh g(-1). It is found that formation and decomposition of the discharge product, Li2O2, occur within the macropores, and thus, the mp-GP maintains its original structure without considerable expansion during cycling. (C) 2016 Elsevier Ltd. All rights reserved.</P>

감마선에 의한 Salmonella choleraesuis, E. Coli K12 and Staphylococcus aureus의 살균에서 O2와 aeration의 효과

이오미 ( O Mi Lee ),김해연 ( Hae Yeon Kim ),김진명 ( Jin Myoung Kim ),김태훈 ( Tae Hun Kim ),이면주 ( Myun Joo Lee ),유승호 ( Seung Ho Yu ) 한국공업화학회 2008 응용화학 Vol.12 No.2

韓國人의 各 臟器組織中 靑酸鹽의 微量分布에 關한 硏究(Ⅱ)

張成吉,金恩浩,金英雲,李鎭勳,柳在薰,權五星,金明德,吳世珍,金由那 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

만성 정신질환자 가족의 우울증상 및 관련 요인 조사

심민영,임선진,김진훈,권오향,조성진,김석주,김계현,이병학,한덕현 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.4

Objectives : It has been reported that caregivers of patients with chronic mental illness including schizophrenia are in higher risk for psychological and physical health problem. This study was performed to evaluate the depressive symptoms and associated factors in caregivers of patients with chronic mental illness. Methods : The subjects were 77 unaffected caregivers (30 parents, 30 siblings, 10 offspring, and 7 spouses) of patients with chronic mental illness (62 schizophrenia, 4 schizoaffective disorder, 11 bipolar disorder) and 100 healthy controls. Depressed mood was assessed by Beck Depression Inventory (BDI) in all subjects. For their sick family members, clinical factors including psychotic symptoms using the Positive and Negative Syndrome Scale (PANSS), duration of illness, number of admission were assessed. Results : The mean BDI score of the caregivers was significantly higher than that of control subjects (11.2±11.6 and 8.0±17.5). Given that 23.4% of family group and 23.0% of control group are attributed to mild to moderate depressed state and 22.0% of family group and 8.0% of control group to above moderate depressed state, significant depressive symptom is more frequently observed in family group. The mean BDI score of parent group was higher than that of sibling group controlling for sex and age. In the parent group, BDI scores are positively correlated with age while the offspring and spouse group had negative correlation between BDI scores and age. Higher age, lower socioeconomic state, more severe positive symptom scores of patients were potential predictors for BDI scores of caregivers. Conclusion : This study showed that caregivers of patients with chronic mental illness have significant depressive symptoms. It may be suggested that depressive symptoms of caregivers are associated with aging, low socioeconomic state, and severe positive symptom rather than chronicity of their sick family members.

Kirschner wire를 사용한 과두하 골절의 구강내 접근법

김성일,김승룡,백진아,고승오,신효근 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.3

The treatment of mandibular subcondylar fractures is a matter of controversy. The majority of mandibular subcondylar fracture are treated by closed reduction, but the displaced or dislocated mandibular subcondylar fractures may be treated by open reduction. The characteristics of open reduction are the anatomical reduction, the functional restoration, the rapid function, the maintenance of vertical ramus dimension, the better appearance and the less resultant TMJ problem etc. When an open reduction is considered, the wire, miniplate, lag screw and Kirschner wire are available with internal fixation. Of these, Kirschner wire is a simple method relatively and correct positioning of the wire achieves rigid fixation. But many open reduction methods for mandibular subcondylar fractures require extraoral approach. The extraoral approach has some problems, the facial scar and the risk of facial nerve injury. On the other hand, the intraoral approach eliminates the potency of the facial scar and the facial nerve injury, but is difficult to access the operation site. Since the intraoral approach was first described by Silverman (1925), the intraoral approach to the mandibular condyle has been developed with modifications. The purpose of this article is to describe the intraoral technique with the Kirschner wire on mandibular subcondylar fractures. Conclusion : The intraoral reduction with Kirschner wire on mandubular subcondylar fractures avoids the facial scar and facial nerve injury and is simple method to the extraoral approach. And it has minimal morbidity and better esthetics.

구개주름의 형태형성과 Retinoic Acid로 유발된 이상

김혜진,신웅기,권오유,이영호,김원식 충남대학교 의과대학 지역사회의학연구소 1996 충남의대잡지 Vol.23 No.2

Morphogenesis of palatal rugae and retinoic acid-induced anomalies, numerical and pattern disruptions, were studied to know the mechanism of normal rugae formation and the relations between these disruptions and retinoic acid teratogenecity. Sprague-Dawley rats and all trans retinoic acid of Sigma Chemicals were used in this experiment. Retinoic acid was administered at gestational day 8, 9, 10, 11, and 12 by the dose of 60mg/kg 80mg/kg 100mg/kg and 120mg/kg respectively per orally. At the gestational day 17.5, the rats were sac rificed under ether anesthesia and removed entire uterine horns into the saline-filled Petri dish. Congenital anomalies on the head and palatal rugae were observed with stereoscope. and light and transmission electron microscopic observation were performed to investigation histologic changes of the rugal epithelium and mesenchyme after retinoic acid treatment. The results were as follows; 1. Retinoic acid-induced congenital anomalies in this experiment were exencephaly and hydrocephalus in gestational day 8 and 9 groups, and cleft palate in gestational day 9 and 10 groups, and the number of anomalies was increased dose dependently. 2. Severe numerical variation and pattern disruptions such as division, medial and lateral fusion, cross, bifid rugae and rugal papillae were found on the gestational day 9 and 10 groups, and the relation between the retinoic acid teratogenecity and the numerical and pattern disruptions of the rugae were very close. 3. On TEM observation, the basal laminae under the rugal epithelium were absent at many areas and the filopodiae of the epithelial cells protruded into the underlying mesenchyme. According to the above results, it is considered that the mesenchymal cells of palatal shelf migrate into the designated areas of epithelium through the basal lamina, proliferate rapidly and form the rugae. Retinoic acid may inhibit the proliferation and migration into the epithelium of mesenchymal cells and the incompatibility between the growth of palatal shelf and the slowed speed of mesenchymal cells migration into the epithelium will leads the numerical and pattern disruptions of the rugae. And the relation between the teratogenecity of the retinoic acid and the numerical and pattern disruptions of the rugae was considered to be very close.

중남미지역 FDI 추이분석과 기업진출 방향

김진오 부산외국어대학교 이베로아메리카연구소 2000 이베로아메리카 Vol.2 No.-

Apoptosis의 분자적 특징과 조절 기작

김진우,조철오 아주대학교 의과학연구소 1998 아주의학 Vol.3 No.1

모든 생명체를 이루고 있는 세포는 생명현상이 이루어지는 가장 기본적인 단위이다. 생명체 내에는 이러한 세포들의 수를 적당 수준으로 유지하는 기작이 존재하고 있어서 원활한 생명현상을 수행하도록 하고 있다. 만일 세포 숫자의 조절이 여러 요인들에 의해 깨어지면 생명체에 치명적인 결과를 가져올 수 있다. 따라서 이들 세포들의 적절한 수를 조절하는 정밀한 기작들이 생명체에는 존재하고 있는데, 이 중의 하나가 죽음에 의한 조절이다. 죽음에 의한 생명의 조절 현상은 다세포 생물의 발생과정이나 조직의 분화, 또는 암이나 면역결핍 들의 질병에서 볼 수 있게 되는데. 대부분의 경우 apoptosis라는 특이한 세포의 능동적인 기작을 통하여 이루어지게 된다. Apoptosis에 대한 연구는 1970년대의 현미경학적인 접근에서 그 특이한 형태적인 특징으로 구분되어 졌다. 1980년대 이후 분자생물학과의 접목으로 본격적인 연구가 이루어져 현재 생물학계에서 가장 활발한 연구분야의 하나가 되었다. 이 분야의 연구는 다양한 관심 분야에서 다각적인 접근이 이루어지고 있다. 이를 통해 최근 몇 년 동안에는 apoptosis 과정에 관여하는 여러 유전자들의 발견과 이들의 상호 연관성에 대한 연구 결과들이 보고되고 있어 apoptosis의 신비를 풀어 줄 실마리를 제공하고 있다.