https://pubs.kist.re.kr/handle/123456789/75371 2026-04-06T11:35:32Z https://pubs.kist.re.kr/handle/201004/154067 Title: 운행 도시철도 객실의 입자오염 특징 Authors: 김종범; 우상희; 김창혁; 임형진; 황문세; 윤화현; 이승복; 정준식; 배귀남 Abstract: PSD가 설치된 이후 도시철도 터널의 공기질은 악화되었고, 이에 따라 도시철도 객실의 공기질에 대한 관심이 증가하고 있다. 2017년 2월 3일 퇴근시간대에 수도권 도시철도 5호선에서 1회 왕복구간을 대상으로 객실 내 공기 질 평가를 수행하였다. 입자상 오염물질 측정을 위해 FMPS와 APS를 사용하였고, CO2, 온습도의 측정을 위해 IAQ monitor를 사용하였다. 마천에서 방화구간(trip 1)에서 CO2는 1,315±482 ppm, 온도는 20.8±0.9℃, 습도는 30.8±5.4%로 나타났다. 방화에서 상일동 방면(trip 2)에서는 CO2 1,065±218 ppm, 온도 20.9±0.4℃, 습도 29.0±2.4%로 나타났다. 입 자상 오염물질의 경우 trip 1에서 FMPS 17,175±4,780 particles/㎤, APS 161±58 particles/㎤로 나타났고, trip 2에서는 FMPS 20,328±5,506 particles/㎤, APS 188±47 particles/㎤로 나타났다. 구간별로는 trip1에서 김포공항역과 아차산역이 가장 높게 나타났고, tirp 2에서는 마곡역과 우장산 역이 가장 높게 나타났다. 입경별로는 FMPS의 경우 10 ㎚와 30 ㎚에서 최대 피크를 나타냈으며, APS에서는 0.5 ㎛와 2 ㎛에서 최대피크를 나타냈다. 측정결과 도시철도 출입구의 변형과 차량과 차량 사이 통로 하부부식, 승객 출입 개폐문 하부부식으로 인해 터널 공기가 객실로 유입되고 있었 고, 이에 따라 터널 내 오염물질이 객실 내 공기질에 영향을 미치고 있는 것을 확인할 수 있었다. 2017-12-01T00:00:00Z https://pubs.kist.re.kr/handle/201004/154066 Title: 도로 인접 어린이집 보육실의 실내공기질 주간변화 특징 Authors: 김종범; 이승복; 이재영; 이광재; 류성희; 김경환; 배귀남 Abstract: The number of children who use day-care centers is increasing. Most indoor air quality (IAQ) management has been based on daily average pollutant concentrations measured once a year. A more comprehensive management of IAQ is needed to protect children’s health from air pollutants in day-care centers. In this study, we investigated the weekly variation of air pollutant concentrations in a nursing room of a day-care center located at the roadside for a week in June of 2014. Average concentrations of CO2, PM10, black carbon, and total surface area of lungdeposited particles during nursing time of the day-care center were 510 ppm, 27.8 µg/m3 , 1.87 µg/m3 , and 30.6 µm2 /cm3 , respectively, with a similar diurnal pattern shown on weekdays. 2017-06-01T00:00:00Z https://pubs.kist.re.kr/handle/201004/123295 Title: Generation of binary holograms for deep scenes captured with a camera and a depth sensor Authors: Leportier, Thibault; Park, Min-Chul Abstract: This work presents binary hologram generation from images of a real object acquired from a Kinect sensor. Since hologram calculation from a point-cloud or polygon model presents a heavy computational burden, we adopted a depth-layer approach to generate the holograms. This method enables us to obtain holographic data of large scenes quickly. Our investigations focus on the performance of different methods, iterative and noniterative, to convert complex holograms into binary format. Comparisons were performed to examine the reconstruction of the binary holograms at different depths. We also propose to modify the direct binary search algorithm to take into account several reference image planes. Then, deep scenes featuring multiple planes of interest can be reconstructed with better efficiency. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. 2017-01-01T00:00:00Z https://pubs.kist.re.kr/handle/201004/123294 Title: Diamond/carbon nanotube composites: Raman, FTIR and XPS spectroscopic studies Authors: Varga, Marian; Izak, Tibor; Vretenar, Viliam; Kozak, Halyna; Holovsky, Jakub; Artemenko, Anna; Hulman, Martin; Skakalova, Viera; Lee, Dong Su; Kromka, Alexander Abstract: As long as the carbon family materials are pristine, powerful methods for their individual characterization have been established and well understood. However, as soon as these materials contain a mixture of sp(2) and sp(3) hybridized carbons, the spectroscopic characterization becomes challenging. In this paper we present on some aspects of multiply spectroscopic characterizations of sp(2)-sp(3) carbon heterosystems, which can play an important role for their correct structural assignment. We study a composite of single-wall carbon nanotubes (SWCNT) with diamond nanoparticles and a SWCNT paper coated with nanocrystalline diamond films. The SWCNT paper serves here as a reference. We evaluate the surface free energy measured by contact angle technique, morphology imaged by scanning electron microscopy and the chemical composition determined by X-ray photoelectron spectroscopy, Raman spectroscopy at different excitation wavelengths and by attenuated total reflection (ATR) Fourier Transform Infrared spectroscopy (FTIR) using different ZnSe ATR prisms. We demonstrate that, because of the resonant nature of Raman process in SWCNTs, the particular conditions at Raman measurement (laser excitation wavelength, laser intensity) strongly influence the measured spectra of the sp2-sp3 hybridized heterosystems. We also show how the dimensions of the ATR prism affect the results of the FTIR measurements of the SWCNT papers. (C) 2016 Elsevier Ltd. All rights reserved. 2017-01-01T00:00:00Z