• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.231-232
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• 2002

대기 중 휘발성유기화합은 오존생성의 전구물질 및 유해화학물질 그리고 일부는 악취물질로 작용하는 주요 대기오염물질로 주목받고 있으며, 여러 가지 VOCs의 배출원 중에서 세탁소도 주요 발생원중 하나로 주목받고 있다. 세탁에 사용되는 유기용제에는 퍼클로로에틸렌(PCE)과 불소계용제, 석유계 용제가 있는데 일본을 제외한 외국에서는 밀폐형기계인 PCE를 사용하고 있는데 반해, 우리나라에서는 약 95% 정도의 세탁소가 석유계 용제를 사용하고 있다. (중략)

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.4 no.2
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• pp.224-239
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• 1994

In this study we examined several subjective symptoms in an exposed group and an unexposed group to perchloroethylene. The exposed group consists to 30 workers employed in 23 dry-cleaning establishments located in Chung Cheung Do, whereas the unexposed group consists of 42 officers employed in a certain university. This study was conducted from October, 1993 to March, 1994. Also we investigated personal exposure levels and area concentration of PCE, and performed hematological and biochemical examination in blood and urine samples from the exposed group. The results are : 1. The exposed group highly complains several subjective symptoms, particularly in neuropsychiatry, eye, respiratory system and digestive system, compared with the unexposed group. But complaint rates in the exposed group are not related with PCE exposure levels. 2. PCE exposure levels for all dry-cleaning establishment varied widely, from 0.18 to 37.58ppm. The mean exposure level for centers of chain was 16.85ppm, and for local laundries was 8.83ppm, while for self-service establishment it was 3.07ppm. Eighty three percent of the workers were exposed less than the half-level(25.0ppm) of the Korea 50.0ppm standard for eight-hour PCE exposure. Seventeen percent of them exceeded the half-level of the Korea TLV. 3. Statistical correlation exists between the work load(number of operation cycles of equipment and the mass of processed textiles) and the personal exposure levels to be observed. 4. In hematological examination the values of WBC, RBC, Hgb, Hct, MCV, MCH, MCHC and PLT in the exposed group were within normal ranges. In biochemical examination(GOT, GPT, ALP, U-A and LDH) most of the items were within normal ranges. From this surveys conducted on 23 dry-cleaning establishments, the complaint rates of the exposed group to PCE in several subjective symptoms were higher than those of the unexposed group, and PCE exposure levels in all dry-cleaning establishment were below the Koera standard 50.0ppm. In hematological and biochemical examination the significant abnormalities by occupational exposure to PCE were not observed. However, the workers employed in dry-cleaning establishments are always faced with risk, becauses they are also exposed to several organic solvents used to remove stains. Therefore, various measures to improve occupational environment in dry-cleaning establishment should be considered.

• Review of KIISC
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• v.28 no.4
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• pp.48-57
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• 2018

최근 국내외적으로 암호화폐 거래소(이하 '디지털 자산 거래소')를 대상으로 빈번히 발생하고 있는 암호화폐(이하 '디지털 자산') 탈취, 무단 입출금 등 보안 사고를 통하여 자금세탁 및 테러자금조성 등 사회적인 문제를 일으키는 불법 행위가 증가할 가능성이 높다. 본 논문에서는 국제 표준화 기구에서 다루고 있는 디지털 자산 거래소 보안에 관한 표준안, 국내외 법 규정 등을 분석하고 디지털 자산 거래 과정에서 발생할 수 있는 잠재적인 보안 위협을 식별함으로서 자금세탁 및 테러자금조성 방지를 위한 디지털 자산 거래 시스템의 개선 방안을 제시한다.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 1999.10a
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• pp.117-118
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• 1999

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.8
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• pp.185-194
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• 2014

In this paper, we proposed the clothing management system using the smart hanger. Proposed system consists of smart hanger, base module, and server, and the smart hanger consists of MCU, LED, RFID reader, RF chip, ring sensor, and battery. The smart hanger reads the RFID tag attached to the clothes and wirelessly transmitted to the server. The server associated base module communicates with the smart hanger and transmits information to the server. The server manages clothing through the DB, and can display various information through the web page and the smart phone. In order to verify the usefulness of the proposed system, we did experiment with the management system for clothing store and laundry where using a lot of hangers. Performance tests of the smart hanger are applied to check the current consumption and can be predicted the battery life with the proposed low power algorithm. The clothing store management system can be increased sales and convenience of the consumer. The laundry management system can be increased the efficiency of laundry category and convenience of the consumer.

• Fire Science and Engineering
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• v.27 no.1
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• pp.39-45
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• 2013

This study analyzes the explosion hazard of dry cleaning solvent recovery machine in laundry shop in two aspects, i.e. combustible and ignition source, and determines the explosive conditions of this machine by conducting mockup explosion tests repeatedly, varying conditions and using real dry cleaning solvent recovery machines. As to combustibles, two kinds of combustibles used widely in Korea have been selected and tested. The flash points, LEL's, and saturation vapor pressures of those combustibles have been measured, and their explosion specific curves have been drawn, based on the results of the measurements, so that the explosion risks of those materials may be determined, depending on the temperatures. Potential voltages generated from materials for laundry and foreign materials of metals have been assumed to be the ignition sources in this application, and their potential voltages have been measured, depending on temperature, humidity, and antistatic agent, by using real materials for laundry and a potential voltage measuring device. Tests have been conducted, varying the quantities, concentrations, and operating temperatures of materials for laundry. As a result, explosions have not been generated with potential voltages of materials for laundry, but explosions have been observed when applying artificial spark energy of 2.0 mJ.

• Vending industry
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• v.7 no.1 s.19
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• pp.82-85
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• 2007

흔히 사람이 살아가면서 없어선 안 될 요소로 의식주를 손꼽곤 한다. 그런데 이 3가지 요소 중에서 의류가 맨 앞에 포진함은 의미심장하다. 먹고 자는 행위보다 입는 행위가 더 중요해서 일까. 아마 잠시라도 사람의 곁을 떠나지 않으면 안 되는 필수적인 요소이기 때문에 의류를 제일 앞에 포진시킨 것이 아닐 까 한다. 사실 인간이 옷을 입지 않고 존재하는 시간은 얼마 되지 않는다. 은밀한 사적인 공간에서 아니면 인간은 입어야 하는 게 숙명이다. 반면 삶에 있어 반드시 필요한 입는 행위의 이면에는 빠는 행위, 즉 세탁의 행위가 숙명처럼 존재한다. 한번 입고 옷을 버리지 않은 이상 세탁은 삶에 있어 필수 불가결한 요소이다. 이러한 행위를 가장 편하게 만드는 이기가 세탁기이다. 세탁은 가정에서 하는 게 일반적이기만 상업용 세탁용 시장도 존재한다. 돈 주고 세탁을 맡기는 세탁소가 대표적인 업종이다. 그런데 최근 상업용 세탁 시장의 틈새시장으로 셀프 빨래방이 확대되고 있다. 셀프 빨래방은 말 그대도 소비자가 혼자 세탁기 및 건조기를 이용해 세탁을 하는 업태이다. 셀프세탁 문화의 확대가 전제되어야 하는 이 신업태가 과연 얼마만큼의 시장 파급력을 형성할 수 있을 까. 이 신업태의 중심에 있는 코인업사는 셀프 빨래방의 급속 확산과 성공을 자신하고 있다. 무인매장으로 24시간, 365일 운영을 할 수 있다는 사업 본연의 장점에다 최근 매장 경쟁력을 강화할 야심에 찬 제품군까지 준비했다. 바야흐로 셀프 빨래방의 전성시대를 열어가려하는 코인업의 신사업 추진 현황을 따라가 봤다.

• Journal of the Society of Disaster Information
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• v.17 no.3
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• pp.600-607
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• 2021

Purpose: The purpose of this study is to examine the path of money laundering of criminal proceeds through cryptocurrency using criminal script analysis and to devise measures to prevent and prevent criminal justice agencies from doing so. Method: Based on the results of a prior study on the profit path of cryptocurrency through money laundering and criminal cases in Korea, the path of money laundering was analyzed using criminal script techniques. Result: Most of the cryptocurrencies that have been launched are converted into criminal proceeds, which are re-launched and cashed or have a vicious cycle of being used as criminal funds are used. According to the script, the route of money laundering is mainly converted to criminal proceeds from cryptocurrency exchanges using anonymity, which is repeated several times, making it very difficult to find the money using cryptocurrency in criminal justice institutions. Conclusion: As the method of money laundering using cryptocurrency is becoming more sophisticated, legal sanctions and preventive institutionalization should be prepared for the prohibition or confiscation of cryptocurrency transactions for money laundering after understanding the flow.

• Journal of Korean Society of Environmental Engineers
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• v.31 no.11
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• pp.1025-1032
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• 2009

This study investigated a possibility to develop an adsorption process for volatile organic compounds (VOCs) of the solvent emitted during dry cleaning. Pitch activated carbon fiber (ACF) was chosen as an adsorbent of VOCs, and an electric swing adsorption process was utilized for the reproduction of the adsorbent after the completion of VOCs adsorption. Effects of ACF types and several solvents such as trichloroethylene (TCE) and toluene were examined on breakthrough curves and amounts of adsorbed VOCs. ACF was pretreated under various conditions in order to enhance the amounts of the adsorbed VOCs. Temperatures and voltages were measured for the reproduction of the ACF after full adsorption. ACF having micropores exhibited high adsorption of TCE, and high surface area of ACF could increase the adsorption property of toluene. In general, ACF could adsorb 41~54% TCE of the adsorbent weight. The increase of inlet VOCs concentration significantly decreased the breakthrough time and slightly lowered the amounts of adsorbed VOCs. Thus, ACF could effectively adsorb VOCs in low concentration in the feed stream. ACF pretreated by heat under vacuum showed excellent toluene adsorption with controlling oxygen functional groups on the ACF surface, which revealed that vacant carbon site could be the adsorption point of toluene. Most adsorbed toluene was desorbed at $150^{\circ}C$.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.33-34
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• 2000

수용모델을 이용하기 위하여 배출원을 추정하는 방법으로는 측정지점에 영향을 미치는 배출원에 대한 성분조사가 무엇보다 필요하다. 이들은 배출원 구성물질 성분비(source fingerprint)로서 외국의 경우는 연구가 활발히 진행되고 있으나 국내의 경우는 전무한 실정이다. 따라서 본 연구에서는 VOCs 오염원에 대한 기여도를 파악하기 위해 VOCs 농도에 영향을 미치는 주요 배출원인 자동차, 주유소, 도장시설, 저유소 및 출하시설, 세탁소, 도로포장 등을 대상으로 조사하였으며, 이들 자료들에 대하여 각 배출원별 성분비를 구하였다. (중략)