8년간(1992~1999) 산업안전보건연구원에 의뢰된 직업병 심의 사례 분석

강성규,김규상,김양호,최정근,안연순,진영우,최병순,양정선,김은아,채창호,최용휴,김대성,박정선,정호근 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2

Objectives : Pneumoconisis and noise-induced hearing loss (NIHL) have been reported as main occupational diseases by the Special Health Examination. The Industrial Accident Compensation Insurance has reported various work-related diseases, however, these two diseases occupied almost a half of compensated cases. Therefore, it was not well known about the status of occupational diseases other than pneumoconiosis, NIHL, and cardio-cerebrovascular accident (CVA). This study was conducted to analyze claimed cases as an occupational disease, that was requested to the Korea Industrial Safety and Health Agency (KOSHA). Methods : The local office of the Korea Labor Welfare Corporation (KLWC) has asked the KOSHA for confirmation of claimed cases as an occupational disease. We analyzed 379 cases requested from KLWC, the Ministry of Labor, employers, unions and occupational health agencies from 1992 to 1999. Results : Male was 80.7 % of the requested cases. Their mean age was 42 years old and 75.5 % of them were more than 35 years old. The requested cases were increased rapidly from 25 cases in 1992 to 108 cases in 1999 and the accept rate was 50.7 %. The majority of requested cases were respiratory diseases(22.4%), cancers(18.5%), Neuropsychiatric problems(14.5%), and musculoskeletal problems(13.5%). The accept rate was high in reproductive, respiratory, musculoskeletal and digestive disorders and low in neuropsychiatric, renal and otologic problems and occupational cancers. 73.6% of them were caused by chemical agents, especially 28.5 % were by organic solvents. 67% of them were clinically confirmed at university hospitals. A half of the cases were from KyongIn area, even the request came from the whole country. Conclusions : A claim was common in workers whose age was over 35 years old and exposure history was over 10 years. The respiratory diseases and neuropsychiatric disorders were still main problems in occupational health and occupational cancers was increasing even though its accept rate was not high yet.

신규 방사성 항암제 DW-166HC 의 소핵시험

문은이(Eun Yi Moon),이진(Jin Lee),이원용(Won Yong Lee),최청하(Chung Ha Choi),이덕근(Dug Keun Lee),유제만(Jei Man Ryu),정용호(Yong Ho Chung),윤성준(Sung June Yoon),박경배(Kyung Bae Park) 한국응용약물학회 1997 Biomolecules & Therapeutics(구 응용약물학회지) Vol.5 No.3

DW-166HC (^(166)Holmium (^(166)Ho)-Chitosan complex) is a new radiopharmaceutic anticancer agent with a broad anti-tumorigenic spectrum, especially against human hepatic cancer. DW-166HC was evaluated for the appearance of micronucleus in polychromatic erythrocytes (PCEs) of mouse bone marrow cells after subcutaneous arid intravenous single administration. Bone marrow cells were prepared at 24 hr and 48 hr after DW-166HC-I (^(165)Ho-Chitosan complex : cold compound) administration and at 24 hr, 72 hr and 2 weeks after DW-166HC (^(166)Ho-Chitosan complex : hot compound) administration. The results showed there was no statistically significant increase of the numbers of PCEs with micronucleus in all DW-166HC-I administered groups compared with a negative control group but there was statistically significant increase of the numbers of PCEs with micronucleus at 24 hr arid 72 hr in all DW-166HC administered groups, which was recovered after 2 weeks from the drug administration. The results also showed the ratio of normochromatic erythrocytes (NCEs) to PCEs of all DW-166HC-I administered groups was not significantly different from that of a negative controi group but there was significant difference of this ratio at 24hr and 72 hr in all DW-166HC administered groups compared with that of negative group, which was also recovered after two weeks from the drug administration. These results suggested that DW-166HC-I may not cause any chromosomal damage but DW-166HC has in vivo mutagenic potential because of its radioactivity.

Styrene과 2-Hydroxypropylacrylate(2-HPA) 공중합 특성

박근호,정영언,김남석,설수덕,서영옥 東亞大學校 大學院 1999 大學院論文集 Vol.24 No.-

Solution copolymerization of Styrene(St.) with 2-Hydroxypropylacrylate(2-HPA) was carried out with Benzoylperoxide(BPO) as an initiator in toluene at 80℃ in a batch reactor. Reaction volume and reaction time were 0.3 liters, 7hours respectively. The time to reach steady state was about the six time. The monomer reactivity ratios, r1(St.) and r2(2HPS) were determined by both the Kelen-Tudos method and the Fineman-Ross method : r1(St.)=0.376(0.330), r2(2-HPA)=0.408(0.778). The activation energy of thermal decomposition was in range of 33∼55 kcal/mol.

아조벤젠을 含有한 長鎖脂肪酸의 光異性化 現象에 關한 硏究

朴根浩,朴泰坤 國立 昌原大學校 産業技術硏究所 1994 産技硏論文集 Vol.8 No.-

The Synthesis of p-(p'-octadecyloxy phenylazo)-benzoic acid and p-(p'-hexadecyloxy phenylazo)-benzoic acid were optimized, starting from p-(p'hydroxy phenylazo)-benzoic acid and the product of reaction containing azobenzene chromophores was investigated by ultraviolet spectrophotometery in ethanol solvent at room temperature. In addition, UV absorption spectra of Langmmuir Blodggett(LB) film deposited on quartz plate have been measured and the structure of these compounds were ascertained by means of Ultraviolet and Fourier Transform Infrared spectra. Recrystallization of reaction product in the solvent results the experimental yield obtained about 62.93% p-(p'-octadecyloxy phenyl azo)-benzoic acid. Long chain azobenzene derivatives solution are induced photoisomerization by light irradiation. The LB film of azobenzene containing long chain fatty acids are possible of being applied to functional molecular devices such as photomemory and light switching.

觀光動機 및 觀光誘引에 關한 考察

朴瑾浩 동국대학교 행정대학원 1975 행정논집 Vol.6 No.-

폴리비닐 알코올-아조벤젠 유도체의 광 안정성에 관한 연구

朴泰坤,朴根浩 國立 昌原大學校 産業技術硏究所 1995 産技硏論文集 Vol.9 No.-

The Synthesis of long chain fatty acid containing azobenzene(Cn-Azo-PVA) was optimized, starting from Cn-Azo(C14, C16, C18) compounds and the product of reaction containing azobenzene chromophores was investigated by ultraviolet spectro-photometery in chloroform solvent at the various temperature. In addition, Reversibility and stability of azo compounds have been measured by means of Ultraviolet and the structure of these compounds were ascertained by means of FT-IR and NMR. Long chain azobenzene derivatives in chloroform solution are induced phtoisomerization by u.v. and visible light irradiation. The solution of long chain fatty acids containing azobenzene(Cn-Azo-PVA) are possible of being applied to functional molecular devices such as photomemory and light switching.

觀光資源開發의 基準設定에 關한 考察

朴瑾浩 동국대학교 대학원 1974 大學院硏究論集-東國大學校 大學院 Vol.4 No.-

Tourism's importance was exemplified in the sponsorship by the United Nations of a Conference on International Travel and Tourism held in Rome in august september, 1963. At this conference, which was attended by over 600 persons from 84 countries, world attention was focused on international travel and tourism as "an economic and social force of major proportions in the world" Tourism is looked upon by many countries as a highly desirable and feasible method of economic development because the resources which attract and support tourism are usually abundant in undeveloped areas. Korea have also many tourism resouces for example, there are cultural attractions, scenery resources, antiquities, interesting and attractive people, and natural resource. But these abundant tourism resources did not development systematically in whole nation wide. So I attempted to study the tourism resource development and potential tourism areas with Korean Tourism Development Master Plan. The criteria of tourism resource development will be establish: 1) That sufficient potential exist to warrant large scale development 2) That sites are available that have the necessary attractiveness to warrant development 3) That physical development chracteristics necessary attract the potential tourist market 4) That the infrastructure requirements are both financially and physicically feasible 5) That economic benefit to the nation is sufficient to warrant the dedication of the required financial and natural resource. 6) Preservation of unique natural or cultural resources and traditional Korean architecture should rank hish on the tourism resource development priority.

호주의 쌀 산업 동향과 생산비 분석

박평식,박준근,정호근 한국국제농업개발학회 2002 韓國國際農業開發學會誌 Vol.14 No.1

본고는 호주의 쌀 생산동향과 변화추이, 재배기술 및 생산비 구조를 분석하여, 우리나라 쌀 산업의 경쟁력 제고를 위한 시사점을 모색코자 하였다. 이를 위해 호주의 주요 쌀 생산지를 방문하여 생산농가와 연구기관 등 관련자 접촉을 통해 현지자료를 수집분석하였다. 호주의 쌀 품종 및 재배기술 개발, 경지정리 및 수자원 관리기법, 생산자조합의 체계적인 활동과 저장가공 시설의 적재적소배치 등을 통한 생산비 절감노력 등을 벤치마킹해야 할 것이다. 경영규모의 영세성은 우리 쌀 농업이 지니고 있는 가장 큰 한계점이고, 그 결과 높은 생산비가 우리 농산물의 대외적인 경쟁력을 약화시키고 있다. 쌀을 수출하는 호주 등 주요 국가의 생산비는 우리나라의 10∼45% 수준에 불과한 실정이다. 이러한 상황하에서 자연증가에 의한 호당 경영면적의 확대는 현실적으로 매우 어려운 것으로 나타나고 있다. 우리나라 쌀 산업 발전을 위해서는 무엇보다도 생산비 절감이 매우 절실하고 그 방향은 구조개혁에서 찾아야 할 것이다. 특히, 생산기반의 구조조정 차원에서 경지정리, 교환분합, 임대차 확대, 농지집단화 노력의 배가가 시급하다고 할 수 있다. 이러한 규모화 사업이 품질향상과 더불어 우선적인 정책방향으로 추진되어야 한다. 동시에 선진국에서 막대한 예산을 투입해서 시행하고 있는 직불제도는 우리나라에서도 필요한 것이 사실이다. 다만 구조조정에 역행하거나 모순되는 직불제의 시행보다는 구조조정을 최대한 촉진시킬 수 있는 직불제가 더 현실화된 금액으로 시행되는 것이 바람직하다. 쌀 농민들의 수직적 통합이 보다 적극적으로 진행되어 농업인들의 자생적 경쟁력이 강화되어야 하며, 불합리하게 많이 설치된 RPC를 비롯한 방만한 유통조직도 재정비되어야 할 시점에 있다. This study aims to analyze the trend of Australian rice economy and production cost. Rice cultivating region is Riverina plain area in New South Wales, Australia. In recent years(1998-2000), about 1,291 thousand tonnes(paddy rice base) of rece produced on the 135,000 ha in the country. About 85% of Australian rice production exports to more than 40 countries. That makes Australia is the main exporter of Japonicatype rice in the international market. The current situation and trend of Australian rice industry and structure of production cost are described in this paper.

경남지역 대기중의 부유분진 특성에 관한 연구

박점상,박근호 7개 국립대학교 환경연구 논문집 공동발행 위원회 2002 환경연구논문집 Vol.2 No.1

Suspended particles in the air were captured by high volume air sampler in the 29 sites of south Geyngsang area and measured total suspended particulate (TSP), heavy metals, and ion compounds. The results are following as; The average of TSP is 76.8㎍/㎥ throughout Gyeongnam area, and regional average is 124.9㎍/㎥ in industrial complex, 99.9㎍/㎥ road side area, and 52.9㎍/㎥ residential area. The highest level of TSP is 189.3㎍/㎥ in Yangsan industrial complex area. And the lowest is 34.1㎍/㎥ in Namhae residential area. The artificial contaminant(SO_4^2- and NO_3^-) have higher levels particularly road side area than industrial complex or residential area. Thus, it appears to be affected by emission gas of automobile. Fe is the heavy metal compound which of the highest concentration is 1.919㎍/㎥ in the air and Cd the lowest, 0.001㎍/㎥. In the regional aspect, it appesrs that industrial comples has high levels of Cl^-, Na^+, TSP, and heavry metals such as Zn, Pb and road side area has ion compounds such as SO_4^2-, NO_3^-. And there's no high level of concentration in residential area. The coefficient of correlation between Fe and Mn(P=0.000) is 0.999 in the industrial complex, that of Cr to Cd(P=0.003) is 0.997 in road side, and in the residential area that of Fe to Mn(P=0.000) is 0.867. Also, the correlation between Fe and Mn has totally the highest coefficient which is 0.995.

효율적인 분산 Deadlock 검출에 관한 연구

박규태,이상범,류근호 연세대학교 산업기술연구소 1985 논문집 Vol.17 No.1

In distributed databases, deadlock may occur due to conflicts in data file lockings. A system is in a deadlock if and only if there is a directed cycle in its demand graph. This paper presents a distributed deadlock detection technique based on transaction wait for graph and reachable set. Reachable set constructs transaction resource graph and detects the deadlock cycle effectively. In this deadlock detection procedure, the deadlock is detected optimally, but there are still some problems of false deadlock due to communication delay. Also studies are made the low cost recovery of the deadlock and their performances.