일부 세탁소의 유기용제 관리실태 및 공기중 노출농도에 관한 조사

노영만,권기범,박승현,정지연 한국산업위생학회 2001 한국산업보건학회지 Vol.11 No.1

This study was conducted to identify the current status of occupational safety and health by checklist and to evaluate the airborne exposure to chemicals and to provide the appropriate recommendation for safety and health of laundries. A total of 20 laundries located in the Gyungi district area were surveyed from July 20 to September 15, 2000. The prevalence of laundries having a stove and gas range were found to be 25 % and 55 %, respectively. Smoking is not allowed in 60 % of the laundries. Only 10 % of dry-cleaners were isolated. Ventilation system in laundries had not been annually inspected. Most of the workers didn't put on respirators, MSDS were not available, and storage bottles did not contain warning labels. The bulk samples of dry cleaning agent include many chemicals that are not controlled by the MOL in Korea. The detected airborne organic solvents in the laundries were benzene, toluene, p-xylene, m-xylene, o-xylene, perchloroethylene, and 2-butoxy ethanol. The airborne concentrations of organic solvents were much less than the occupational exposure limits proposed by the Ministry of Labor(MOL) in Korea. But the concentrations of benzene exceeded the TLV of ACGIH. This study showed that the current status of occupational safety and health was not appropriate for workers in laundries. It is recommended that laundry workers should be educated for the treatment and storage of hazardous organic solvents to improve the occupational safety and health of the working environment as well as MSDS usage. Also, extended research and survey for the organic solvents that are not controlled by the MOL has to be conducted.

연산 결과의 의미 이해를 돕기 위한 단위 사용에서의 교수학적 변환 연구

강정기 ( Jeong Gi Kang ),정상태 ( Sang Tae Jeong ),노은환 ( Eun Hwan Roh ) 한국수학교육학회 2014 初等 數學敎育 Vol.17 No.3

수치와 단위는 서로 동떨어진 것이 아니며, 단위는 수치의 의미를 명확히 하는 역할을 한다. 학생들이 해결해야하는 많은 문제에는 단위가 포함되는데, 문제해결 과정에서 관찰된 학생들은 연산 결과의 의미 이해에 어려움을 겪고 있었다. 이러한 현상의 현황을 확인하기 위해 초등학교 6학년 2개반 52명을 대상으로 검사지를 투입하여 그실태를 파악하여 분석하였는데, 이들에게도 역시 단위는 문제에 주어져 있는 것일 뿐, 단위를 연산의 의미 이해와 연결 짓지 못하였다. 이 연구에서는 이와 같은 결과를 토대로 기존의 교수학적 변환이 갖는 특징과 한계를 살펴보고, 연산 결과의 의미 이해 측면에서 단위가 갖는 이점을 고찰해 봄으로써 상황과 관련한 해석에 있어 단위가 갖는 효력을 구체화하였다. 특히 단위 연산 가능성을 허용한 교수학적 변환에 대한 구체적 논의와 시사점을 제안함으로써, 교수·학습에서 변화의 불가피성을 강조함과 동시에 실질적 도움을 제공하고자 하였다. The number and units are not apart from each other, especifically units clarifies number. Students often encounters many problems involving units, researcher found that students have difficulty in recognize the meaning of calculation results. These students recognizes units, just presented thing in the problem. And they could not connect units with the meaning of calculation results. With this results, this study researched limitation of pre serviced didactic transposition and found the effectness of using units to recognize the meaning of calculation results. Especially we discussed didactic transposition with permitting probability of unit calculation and suggested implications. So we accented the inevitability of change, and tried to offer substantial help.

분산객체 서비스을 이용한 객체보안 연구

노정희(Jeong hee Roh),문정환(Jeong hwan Moon),송기범(Gi beom Song),방극인(Keug in Bang),박찬모(chan mo Park),이광(Gwang Lee),이준(Joon Lee) 한국통신학회 2002 한국통신학회 학술대회논문집 Vol.2002 No.7

예비 초등 교사의 도형 분석 능력 신장을 위한 GSP 작도의 활용

노은환 ( Eun Hwan Roh ),강정기 ( Jeong Gi Kang ),김민정 ( Min Jeong Kim ),정상태 ( Sang Tae Jeong ) 한국수학교육학회 2014 初等 數學敎育 Vol.17 No.2

본 연구에서는 예비 초등 교사의 도형 문제 해결에 있어 필요한 교수 역량을 다양한 문제 해결 능력, 핵심 요소를 추출하는 능력, 그리고 학생의 어려움을 예상하는 능력의 관점에서 그들의 현 실태 파악과 더불어, 교수 역량의 강화 방안으로 GSP 작도를 활용하였다. 그 결과 예비 초등 교사들이 문제 해결에서 오류를 보이기도 하고, 지식에 초점을 둔 핵심 요소를 추출하는 경향이 강하며, 학생들의 어려움을 특정한 한 가지에서 찾는다는 것을 알 수 있었다. 또한 GSP 작도를 통해서 여러 가지 다양한 성질을 부분적으로 탐구하는 것은 가능하나, 통합된 관점에서의 문제 분석 및 개념 간 연결에 어려움을 겪는 것을 발견했다. 더불어 GSP 작도를 통한 시각적 확인 및 탐구 이후, 문제 해결의 방법이 좀 더 다양해졌으며, 학생의 어려움을 예상하는 초점이 다른 방향으로 전환되었음을 확인할 수 있었다. 이러한 결과로부터 GSP 작도가 예비 초등 교사의 교수 역량 강화의 도구로 활용될 수 있도록 돕는 몇 가지 시사점을 추출할 수 있었다. The purpose of the study is to enhance the figure analysis ability for pre-service elementary teacher by using GSP. To do this, we limited to teaching competence divide into ability various problem-solving, extract key elements, predict the difficulty of student and investigated the initial of them, the reality of GSP construction. As results, pre-service elementary teachers made errors, proposed teaching focused on the character using in the problem solving, and found that in one particular difficulties to find the students. The reality of GSP construction activity was possible to explore through the partially constructed a number of various properties, but we found to have difficulty in the connection between concepts. and integrated view of the problem analysis. After visual identification and exploration through the GSP construction, problem-solving ability became a little more variety and changed their direction in order to focus the student`s anticipated difficulties. From these results, we could extract some pedagogical implications helping pre-service teachers to reinforce teaching competence by GSP construction.

Biocontrol of Pectobacterium carotovorum subsp. Carotovorum Using Bacteriophage PP1

( Jeong A Lim ),( Sam Nyu Jee ),( Dong Hwan Lee ),( Eun Jung Roh ),( Kyu Suk Jung ),( Chang Sik Oh ),( Sung Gi Heu ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.8

Pectobacterium carotovorum subsp. carotovorum (formerly Erwinia carotovora subsp. carotovora) is a plant pathogen that causes soft rot and stem rot diseases in several crops, including Chinese cabbage, potato, and tomato. To control this bacterium, we isolated a bacteriophage, PP1, with lytic activity against P. carotovorum subsp. carotovorum. Transmission electron microscopy revealed that the PP1 phage belongs to the Podoviridae family of the order Caudovirales, which exhibit icosahedral heads and short non-contractile tails. PP1 phage showed high specificity for P. carotovorum subsp. carotovorum, and several bacteria belonging to different species and phyla were resistant to PP1. This phage showed rapid and strong lytic activity against its host bacteria in liquid medium and was stable over a broad range of pH values. Disease caused by P. carotovorum subsp. carotovorum was significantly reduced by PP1 treatment. Overall, PP1 bacteriophage effectively controls P. carotovorum subsp. carotovorum.

『뇌공포자론(雷公?炙論)』,『포자대법(?炙大法)』,『수사지남(修事指南)』에 나타난 증제법(蒸製法)에 관한 문헌적 고찰

정기훈 ( Jeong Gi Hoon ),노성수 ( Seong Soo Roh ),추병길 ( Byung Kil Choo ),서영배 ( Young Bae Seo ) 대한본초학회 2013 大韓本草學會誌 Vol.28 No.1

Objectives : Provides research basis on steaming processing method (SPM) as described in literatures ``Roegongpojaron``, ``Pojadaebub``, and ``Susajinam``, Methods : The following issues were considered for current investigation regarding herbal drugs: (i) categorizing SPM-applied drugs, (ii) protocols on the use of the supporting materials, (iii) kind of supporting materials, (iv) processing periods, (v) part of the herb plants, (vi) herbal efficacy, (vii) intrinsic properties and tastes of the herbal drugs, (viii) meridian tropism of the herbal drugs, Result : The number of herbal drugs was 70 species from ``Roegongpojaron``, 73 from ``Pojadaebub``, and 66 from ``Susajinam``. The abundance of supporting materials was in the order of alcohol, honey and tofu. The herbal parts of the roots, stem, fruit, and seed were most widely used. Based on herbal efficacy, a drug supplementing invigoration was used most, and a drug eliminating heat followed next. Based on four spirit features, herbs showing warm, cold, and mild features were used. In considering five tastes, herbs showing bitter and sweet tastes were used most. In considering meridian tropism, herbs converging to liver and kidneys were used, and drugs converging to ``Samcho, and gallbladder were not used, Conclusion : The present survey on SPM as described in ``Roegongpojaron``, Pojadaebub``, and ``Susajinam`` indicates that there is a principal specialty on the use of supporting materials, steaming periods, steaming parts and efficacy.

Increased Expression of Circulating Cancer Stem Cell Markers During the Perioperative Period Predicts Early Recurrence After Curative Resection of Hepatocellular Carcinoma

Choi, Gi Hong,Kim, Gwang Il,Yoo, Jeong Eun,Na, Deuk Chae,Han, Dai Hoon,Roh, Yun Ho,Park, Young Nyun,Choi, Jin Sub Springer - Society of Surgical Oncology 2015 Annals of Surgical Oncology Vol.22 No.suppl3

영·호남 지역주의의 지속과 변화

노기우(Gi-woo Roh),정민석(Minseok Jeong),이현우(Hyeon-Woo Lee) 21세기정치학회 2018 21세기 정치학회보 Vol.28 No.3

중국에서 손원일의 독립운동

노기욱(Roh, gi-uook),정현창(Jeong, Hyeon-chang) 역사문화학회 2015 지방사와 지방문화 Vol.18 No.2

손원일(孫元一, Admiral Sohn Won-il)은 대한민국 해군을 창설한 인물로 널리 알려져 있다. 그러나 손원일은 해군 창설 이전에 만주에서 조국 독립을 외치며 독립운동을 전개한 인물이었다. 그럼에도 불구하고 그의 활동이 부각되지 않고 있다. 손원일의 독립운동 정신은 오늘날의 해군 정신사와 전통을 유지시키는데 기여하였다. 손원일은 17세 청년 시절에 만주에서 본격적으로 독립운동에 가담하였다. 손원일은 1925년 4월 30일 길림유자회(吉林幼者會), 같은 해 11월 18일 여길학우회(旅吉學友會)를 통하여 독립운동을 전개하였다. 그러나 손원일(孫元一)은 일제의 눈을 피하기 위하여 손원일(孫元逸)이라는 가명을 사용하였다. 손원일의 독립운동은 크게 두 가지로 살펴 볼 수 있다. 첫째, 길림유자회(吉林幼者會)활동을 통하여 조선청년들의 완전한 성장과 조국독립을 역설한 점을 들 수 있다. 둘째, 여길학우회(旅吉學友會)에서 ‘단군기념식’을 통하여 민족정기를 바로 세우고 민족 전통의 계승을 중시한 점을 들 수 있다. 이러한 이유로 손원일은 일본경찰에 의하여 독립운동가로 지목되어 주요 추적 대상이 되었다. 손원일은 22세가 되는 1930년 7월 16일에 중국해군부(中國海軍部) 시험에 합격하여 해군보관(海軍補官)으로 세계 항해에 나섰다. 이러한 활동은 민족구원을 위한 실천운동의 하나였다. 이후 그의 행적은 청년기 독립운동가로 뚜렷한 족적을 남겼다. Admiral Sohn Won-il (孫元一) is known as the founding father of the Korean Navy. Sohn was also an independence fighter who engaged in an independence movement in Manchuria before the establishment of the Korean Navy. His pro-independence activities are not widely known, but his efforts for national independence contributed to the current Korean Navy’s spirit and traditions. Sohn started his engagement in the independence movement in Manchuria at age seventeen. His activities as an independence fighter began with his membership in the Jilin Youth Society (吉林幼者會) on April 30, 1925 and membership with the RiujiStudentCorps(旅吉學友會) on Nov. 18, 1925. Sohn used the pseudonym Son Won-il (孫元逸) to avoid recognition by Imperial Japan’s forces. His pro-independence activities are largely divided into two parts. First, he instilled a need for national independence in Korean youths at the Jilin Youth Society. Second, he emphasized efforts to preserve national identity and tradition by holding a ceremony to commemorate Dangun, the legendary founding father of Korea, at the RiujiStudentCorps(旅吉學友會). Because of these activities for national independence, he was put on the Japanese police’s wanted list. After passing the Chinese Navy (中國海軍部) test at the age of 22, Sohn Won-il started a world voyage on July 16, 1930 as an assistant Naval officer. Actions such as this were also a part of his efforts for national salvation. With his activities after that voyage as a young independence fighter, he left a significant mark in the nation’s history of pro-independence movement.

50W급 LED 보안등용 조명광학계 개발

정병조(Jeong, Byoung-Jo),장성환(Jang, Seong-Whan),노용기(Roh, Yong-Gi) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.1

본 연구에서는 기존 LED 보안등의 LED 광원 직진성에 의한 눈부심 현상을 개선하고, 조도 균제도를 높게 유지하며, 회전 대칭이 아닌 편축으로 긴 배광 분포를 가지도록 하여 LED 보안등 간에 생기는 광 공핍현상을 해결할 수 있는 보안등용 LED 2차 렌즈를 개발하였다. 개발 광학계는 보안등용 조명 기준에 만족하도록 설계하였으며, 렌즈 의 형태는 단일 렌즈로 조명 설계 및 해석 프로그램을 이용한 설계와 분석을 통해 최적화를 하였다. Mock-up을 제작 하여 실제 측정을 통해 조도 측정 데이터와 조도 균제도 데이터를 확보하였다. In this paper, we develop about glare phenomenon at security light caused by light source’s straight characteristic, maintaining uniformity ratio of illuminance as high, have long light distribution not by symmetry of rotation but a single axis. we develop second lens for security light that lack of light distribution phenomenon at each of security light can be solved. Our developed light system design satisfies lighting standard of security light’s and shape of lens is single lens. so our lens optimizes designing or analysis by using lighting design and interpretation program. Making a Mock-up to do real measure, we have intensity of illumination and maintaining uniformity ratio of illuminance measurement data.