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완벽한 룸메이트를 얻기 위한 룸메이트 매칭 플랫폼 서비스 연구 : 2030세대를중심으로
Ui-Jin Lee,Seung-In Kim 한국서비스디자인학회 2019 서비스디자인융합연구 Vol.3 No.1
이 연구는 급증하는 1인 가구의 증가로 기존의 혼자 사는 주거 형태에서 서로의 필요, 조건에 따라 세분화하여 룸메이트를 찾을 수 있는 ‘룸메이트 매칭 플랫폼 서비스’ 제안에 목적이 있다. 이러한 서비스는 부동산 애플리케이션에 적용하면 적합하다고 판단하였고, 국내 부동산 시장의 수요를 더욱 충족시킬 수 있는 서비스라고 여겨진다. 이 연구를 통하여 향후 4차 산업 혁명으로 더 커지는 국내 부동산 애플리케이션 서비스를 중심으로 1인 가구의 초기 사회 진출을 위한 방법을 확대하고, 적합한 주거환경의 활성화에 도움이 되고자 한다. 이 방식은 기존의 스마트 폰에서 함께 지낼 룸메이트를 찾는다는 단순 방향에서, 다양한 조건을 가지고 우선순위를 두어 필터로 걸러내어 찾는 보다 효과적인 룸메이트 찾기 방식이다. 이 연구를 발판으로 국내 부동산 시장 활성화가 더욱 커질 수 있길 기대하며, 급증하는 1인 가구 서비스 발전의 기초자료로 활용되고자 한다. The study is aimed at proposing a roommate matching platform service which can find roommates according to the needs and conditions of each other in the form of existing single living with the surge of single - person households. These services are considered to be suitable for real estate applications and are considered to be a service that can better meet the demand of the domestic real estate market. Through this research, I intend to expand the method for the advancement of one person s household into the early social life centered on the domestic real estate application service, which is getting bigger due to the 4th industrial revolution in the future, and help to activate suitable living environment. This method is a more effective way to search for roommates by searching for a roommate to stay together on an existing smart-phone, filtering it by prioritizing it with various conditions. We hope that this study will help to revitalize the domestic real estate market and will be used as basic data for the rapid growth of single-person household services.
톨루엔을 포함한 유기용제의 직업적 폭로로 인한 신경내분비계 영향
이채언,이종태,정의화,손혜숙,문덕환,전진호,강정학,이창희,김휘동,김종한,정귀옥 大韓産業醫學會 1995 대한직업환경의학회지 Vol.7 No.2
Long term occupational exposure to solvent mixtures may cause adverse effects to the central nervous system with neurobehavioral symptoms. And some organic slovents have been suggested to cause impairment of tuberoinfundibular dopaminergic activity and neurochemical mechanisms controlling pituitary secretion. For the purpose of assessing neuroendocrine effects in occupational solvents exposure, hormonal study settings (shoes-manufacturing industry & fishing products industry) and compared with nonexposed controls(33 men, 85 women). Male workers exposed to solvent mixtures had significantly lower plasma level of follicle-stimulating hormone(FSH) than nonexposed male controls. While female workers exposed to solvent mixtures had significantly lower plasma levels of growth hormone(GH), and thyroid-stimulating hormone(TSH) than nonexposed female controls. The results of significant decrease in plasma concentrations of pituitary hormones(FSH, GH, and TSH) in workers exposed solvent mixtures indicate that occupational exposure to solvent mixtures may induce neuroendocrine effects through an effect on hypothalamic pituitary axis.
담관 결찰 시 혈장 빌리루빈 농도와 GPT 활성도의 ICG 농도에 대한 상관관계
배진우,이태의 건국대학교 의과학연구소 1998 건국의과학학술지 Vol.8 No.-
Plasma clearance rate of indocyanine green (ICG) is the most important parameter to evaluate the hepatic reserve function for liver resection. To study the relationship between ICG concentration and bilirubin concentration or GPT activity in plasma, we determined these parameters before and after the ligation of bile duct. we ligated the bile duct of rats to induce hyperbilirubinemia and high GPT activity. Before and after the ligation (one day. three days. or fourteen days). we sampled 0.5 ml blood from portal vein to determine the concentration of bilirubin and GPT activity. After removing the ligation. we injected indocyanine green (0.5 mg/kg, 0.5 mg/ml) for 30 seconds through portal vein and sampled 0.5 ml of blood from the abdominal vein to determine ICG concentration after 15 minutes. From these data, we calculated the correlation coefficient. We calculated statistical significance of these parameters of different days after the ligation and the significance between two correlation coefficients. We confirmed the linearity too. All of these parameters were significantly higher than those before ligation(p<0.05). However GPT activity showed peaks after one day, while the concentration of bilirubin and ICG showed peaks after 3 days. The correlation coefficient was 0.884 between the concentration of ICG and bilirubin, but 0.721 between the concentration of ICG and GPT activity. These correlation showed significant linearity with p<0.001 and significant difference with p<0.05. These results suggest that ICG clearance can be negatively influenced by bilirubin concentration more than by GPT activity in the plasma. Therefore, care should be taken in determining the hepatic reserve function by ICG clearance rate for patients with hyperbilirubinemia.
Lee Seung Jae,Lee Ji-Eun,Lee Chang-Jin,Jeong Ui-Hyun,이우국,Kwon Hyo-Jun,Kim Min-Won,Shim Tae-Hun,Park Jea-Gun 한국물리학회 2022 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.81 No.10
I–III–VI-based quantum dots (QDs) are promising eco-friendly light-emitting materials for next-generation displays. Thus far, I–III–VI-based QDs (i.e., AgIn1-xGaxS2) are still insufcient as light-emitting materials for display felds because of their deteriorated optical properties caused by lattice mismatch between the core/shell materials. We designed a novel passivation process using a shell material (i.e., ZnGa2S4) with crystalline structure identical to that of AgGaS2-xSex core QDs (tetragonal). Green and red light-emitting AgGaS2/ZnGa2S4 core/shell QDs demonstrated superior optical properties owing to the minimum lattice mismatch between the AgGaS2-xSe2 core and ZnGa2S4 shell materials. In particular, a higher quantum yield (QY) and narrow full-width at half-maximum (FWHM) for the green and red light-emitting QDs were achieved, i.e., QYs of 69% and 64% and FWHMs of 26 and 28 nm, respectively. In addition, this remarkable enhancement of optical properties resulted in an increase of~94.4% in the color-space agreement with ITU-R recommendation BT.2020. This means that AgGaS2-xSex-based core/shell QDs have the potential to be used as eco-friendly QDs for light-emitting materials in next-generation displays.
Blue-Shifting Intramolecular Charge Transfer Emission by Nonlocal Effect of Hyperbolic Metamaterials
Lee, Kwang Jin,Lee, Yeon Ui,Fages, Fré,dé,ric,Ribierre, Jean-Charles,Wu, Jeong Weon,D’Alé,o, Anthony American Chemical Society 2018 NANO LETTERS Vol.18 No.2
<P>Metallic nanostructures permit controlling various photophysical processes by coupling photons with plasmonic oscillation of electrons confined in the tailored nanostructures. One example is hyperbolic metamaterial (HMM) leading to an enhanced spontaneous emission rate of emitters located nearby. Noting that emission in organic molecules is from either pi-pi* or intramolecular charge-transfer (ICT) states, we address here how HMM modifies ICT emission spectral features by comparing them with a spectral shift dependent on the local polarity of the medium. The 7.0 nm blue shift is observed in ICT emission from 4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran dispersed into a polymer matrix prepared on HMM multilayered structure, while no spectral shift is observed in pi-pi* emission from perylene diimide. In the frame of the Lippert-Mataga formalism, the blue shift is explained by the HMM nonlocal effects resulting from 8% decrease in refractive index and 18% reduction in dielectric permittivity. This phenomenon was also shown in a hemi-curcuminoid borondifluoride dye yielding 15.0 nm blue shift. Such a capability of spectral shift control in films by HMM structure opens new prospects for engineering organic light-emitting devices.</P>
Proteomic and transcriptomic analysis of lung tissue in OVA-challenged mice
Lee, Yongjin,Hwang, Yun-Ho,Kim, Kwang-Jin,Park, Ae-Kyung,Paik, Man-Jeong,Kim, Seong Hwan,Lee, Su Ui,Yee, Sung-Tae,Son, Young-Jin Pharmaceutical Society of Korea 2018 Archives of Pharmacal Research Vol.41 No.1
<P>Asthma is a long term inflammatory disease of the airway of lungs characterized by variable airflow obstruction and bronchospasm. Asthma is caused by a complex combination of environmental and genetic interactions. In this study, we conducted proteomic analysis of samples derived from control and OVA challenged mice for environmental respiratory disease by using 2-D gel electrophoresis. In addition, we explored the genes associated with the environmental substances that cause respiratory disease and conducted RNA-seq by next-generation sequencing. Proteomic analysis revealed 7 up-regulated (keratin KB40, CRP, HSP27, chaperonin containing TCP-1, TCP-10, keratin, and albumin) and 3 down-regulated proteins (PLC-α, PLA2, and precursor ApoA-1). The expression diversity of many genes was found in the lung tissue of OVA challenged moue by RNA-seq. 146 genes were identified as significantly differentially expressed by OVA treatment, and 118 genes of the 146 differentially expressed genes were up-regulated and 28 genes were downregulated. These genes were related to inflammation, mucin production, and airway remodeling. The results presented herein enable diagnosis and the identification of quantitative markers to monitor the progression of environmental respiratory disease using proteomics and genomic approaches.</P><P><B>Electronic supplementary material</B></P><P>The online version of this article (doi:10.1007/s12272-017-0972-4) contains supplementary material, which is available to authorized users.</P>
Microstructure and Pattern Size Dependence of Copper Corrosion in Submicron-Scale Features
Lee, Ui-hyoung,Jeon, Hyoung Jin,Kang, Tak,Sohn, Hun-Joon,Oh, Kyu Hwan,Her, Eun Kyu,Han, Heung Nam,Lee, H. W.,Kim, Insoo,Kim, Donggyu,Lee, Sung-Keun,Lee, Hyo-Jong The Electrochemical Society 2011 Journal of the Electrochemical Society Vol.158 No.5