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박성훈,박종찬,제상영 한국산업경제학회 2024 산업경제연구 Vol.37 No.2
본 연구는 수원지역(수원시 권선구, 영통구, 장안구, 팔달구, 오산시, 그리고 화성시)에서 건강생활실천율, 조혼인율, 결혼연령성별비율이 합계출산율에 미치는 영향을 분석한다. 이를 위해 본 연구는 2008~2021년 수원지역의 패널자료를 이용하여 효과모형을 추정한다. 실증분석 결과는 다음과 같다. 첫째, 수원지역에서 건강생활실천율은 합계출산율에 유의적으로 음(-)의 영향을 미친다. 이는 자신의 건강에 투자를 많이 할수록 출산에 대한 투자를 줄일 수 있음을 시사하는 것이다. 둘째, 조혼인율은 합계출산율에 유의적으로 양(+)의 영향을 미친다. 이 결과는 최근에도 결혼은 출산율의 주요 결정요인임을 말해준다. 셋째, 결혼연령성별비율은 합계출산율에 유의적으로 양(+)의 영향을 미친다. 즉, 결혼한 남성과 여성의 나이 차이가 클수록 출산율이 높아짐을 의미한다. This study analyzes the impact of the health-life-practice rate, marriage rate, and marriage-age-gender ratio on the total fertility rate in Suwon region including Osan-si, and Hwaseong-si. To this end, this study estimates a random effect model using panel data from the Suwon region between 2008 and 2021. The results of the empirical analysis are as follows. First, the healthy-life-practice rate in Suwon has a significant negative (-) effect on the total fertility rate. This suggests that the more an individual invests in their health, the less they can invest in childbirth. Second, the marriage rate has a significant positive (+) effect on the total fertility rate. These results show that marriage is still a major determinant of fertility rates in recent years. Third, the marriage-age-gender ratio has a significant positive (+) effect on the total fertility rate. In other words, the larger the age difference between married men and women, the higher the fertility rate.
Photoluminescence in MgO-ZnO Nanorods Enhanced by Hydrogen Plasma Treatment
박성훈,Hyunsung Ko,문영호,이종무 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.11
MgO nanorods were fabricated by the thermal evaporation of Mg3N2. The influence of ZnO sheathing and hydrogen plasma exposure on the photoluminescence (PL) of the MgO nanorods was studied. PL measurements of the ZnO-sheathed MgO nanorods showed two main emission bands: the near band edge emission band centered at ~380 nm and the deep level emission band centered at ~590 nm both of which are characteristic of ZnO. The near band edge emission from the ZnO-sheathed MgO nanorods was enhanced with increasing the ZnO shell layer thickness. The near band edge emission from the ZnO-sheathed MgO nanorods appeared to be enhanced further by hydrogen plasma irradiation. The underlying mechanisms for the enhancement of the NBE emission from the MgO nanorods by ZnO sheathing and hydrogen plasma exposure are discussed.
Ethanol Sensing Properties of Au-functionalized NiO Nanoparticles
박성훈,Hyejoon Kheel,선건주,현승균,박상언,이종무 대한화학회 2016 Bulletin of the Korean Chemical Society Vol.37 No.5
Pristine and Au-functionalized nickel oxide (NiO) nanoparticles were synthesized via a simple solvothermal route and the ethanol sensing properties of multiple-networked Au-doped and undoped NiO nanoparticle sensors were examined. The pristine and Au-functionalized NiO nanoparticle sensor showed responses of 442 and 273%, respectively, to 1000 ppm of ethanol at 325 °C. The Au-functionalized NiO nanoparticle sensor showed faster response than the pristine NiO counterpart, whereas the recovery time of the former was similar to that of the latter. The optimal operating temperature of the pristine and Au-functionalized NiO nanoparticles was 325 and 350 °C, respectively, by Au-doping. Both the pristine and Au-functionalized NiO nanoparticle sensors showed selectivity for ethanol gas over methanol, acetone, benzene, and toluene gases. The underlying mechanism of the enhanced sensing performance of the Au-functionalized NiO nanoparticles toward ethanol might be due to modulation of the depletion layer formed around Au particles and the Schottky barriers formed at the Au–NiO junction accompanying ethanol adsorption and desorption, the spill-over effect and high catalytic activity of Au nanoparticles and the smaller diameter of the particles in the Au-functionalized NiO sensor.
Current status of NIV use in Korean ICUs: Interim analysis
박성훈,조재화,최원일,강형구,박태선,하직환,문재영,박태연,김세원,이광하 대한결핵 및 호흡기학회 2017 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.124 No.0
This study, granted by the 2017 Academic Fund of the Korea Academy of Tuberculosis and Respiratory Disease, is a prospective observation study of NIV use in 40 Korean ICUs. The study commenced in June 2017, and a total of 52 patients were enrolled until August 31 2017. Median age was 73.0 years (64.0-79.8 years) and height was 162 cm (152.3-168 cm); body weight was 53.5kg (45.5-64.6kg). The most common cause of NIV use was acute exacerbation of COPD (n = 26, 50.0%), followed by acute hypoxemic respiratory failure (n = 11, 21.2%) and post-extubation failure (n = 11, 21.2%). The most commonly used NIV device was ICU ventilator with NIV mode (n = 25, 48.1%); dedicated NIV device (n = 17, 32.7%), and home ventilator (n = 10, 19.2%). Among ventilator circuits, double circuit was used in 25 patients (48.1%), single circuit with leak port in 26 (50.0%) patients, and single circuit with exhalation valve in one (1.9%) patients. Regarding masks, facial mask was most commonly used (n = 43, 82.7%) and helmet mask was used in 6 (11.5%) patients; nasal mask in two patients and nasal pillow in one patient. The median inspiratory positive airway pressure (IPAP) used was 15.0 cm H2O (12.0-18.0 cm H2O) and expiratory PAP was 5.0 (4.3-6.0 cm H2O); tidal volume was 407.0 ml (358.5-600 ml). Sedation was used in 9 (17.3%) patients. In terms of patient outcomes, 11 (21.2%) patients were weaned off NIV during the ICU care, and 16 (30.8%) patients were discharged home with NIV. However, 12 patients were intubated and mechanically ventilated, and 6 patients died during NIV use.