조선업 근로자의 족부백선 유병률 및 관련 요인

서호석,유철인,이충렬,이지호,김양호,이원신,최지호,성경제,고재경,문기찬 大韓産業醫學會 2002 대한직업환경의학회지 Vol.14 No.4

목적: 울산지역에 소재한 대규모 조선업종 근로자 1,419명을 대상으로 족부백선의 유병률을 조사하고 족부백선의 유병률에 미치는 요인을 조사하여 족부백선의 작업관련성을 알고자 본 연구를 실시하였다. 방법: 근로자 건강진단시 족부백선의 유뮤를 확인하고, 현재 족부백선의 위험인자로 알려져 있는 여러 요인들과 작업, 환경적인 요인들에 대하여 설문조사를 실시하고, 족부백선의 임상적인 양상을 관찰하였다. 결과: 조사결과 족부백선의 유병률은 54.8%로 높게 나타났으며, 직종과 공동목욕탕 이용 유무, 안전화 착용유무, 작업형태, 가족력 유무가 족부백선이 유병률에 영향을 미치는 위험인자로 나타났으나, 다변량 분석결과 가족력과 공동목욕탕 이용만이 통계적으로 유의한 위험인자로 나타났으며(P<0.05), 안전화 착용은 통계적으로 유의하지 않았다. 결론: 이상의 결과에서 사업장내 근로자들의 족부백선의 높은 유병률과 관련된 직접적인 요인은 사업장내의 공동 목욕탕의 이용 여부와 족부백선의 가족력임을 확인할 수 있었으며, 많은 근로자들이 원인으로 지목한 안전화의 착용은 통계적인 유의성은 없었다. 따라서 족부백선이 작업과 직접적으로 관련되었다는 근거는 적은 것으로 보인다. 하지만 일반인보다 높은 유병률을 보이는 것으로 확인된 사업장내 족부백선의 유병률을 감소시키기 위해서는 위험인자로 최종 확인된 작업장 내의 공동 목욕탕의 철저한 위생관리와 함께 가족간의 감염을 예방히기 위한 개인위생관리가 필요하면, 비록 통계적인 유의성은 없었으나 여러 근로자들이 원인으로 지목한 안전화의 개선에도 노력해야 할 것으로 생각한다. Objectives: Recently, tinea pedis has been reprted to be a type of occupational dermatoses because of its high prevalence in specific working conditions. Although there is no doubt that the environment surrounding work places, the usual habits of workers erc ate intimately related to this skin conditions, there is some controversu as to whether or not this condition is a real occupational illness and what is the exact cause of the high prevalence of this illness is. In this study, the prevalence of tinea pedis in workers from the shipbuilding industry was investigated andthe risk factors of this disease were evaluated. This study also aimed to verify whether or not tinea pedis is one of the occupational diseases. Methods: The result of interviews, questionnaires and clinical findings from 1,419 workers who visited the occupational health center for an annual routine check for their health state were analyzed. Results: Among the 1,419 workers, 778 workers (54.8%)had tinea pedis. By simple logistic regression analysis, the prevalence of tinea pedis was found to e affected by some variables, including the jov category, the types of work, the kinds of footwear, whether or not they were using communal baths in the work places, and a family history of tinea pedis. In contrast, by multiple logistic regression analysis, only utilization of the communal baths in the work places and a family history of tinea pedis turned out to be statistically significant risk facrors. Conclusions: In this study, the major factors contributing to the high prevalence of tinea pedis are the use of communal baths in the workplace and a positive family history. However, the wearing of safety shoes was not statistically significant. Therefore, tinea pedis could not be confirmed to be an occupational disease. On the basis of these results, a solution to the environmental hygiene of communal bats and the personal hugiene of individuals needs to be improved in order to prevent tinea pedis.

함안 방어산 마애삼존불의 보존처리를 위한 암석학적 연구

이찬희,서만철,최석원 공주대학교 문화재보존과학연구소 2003 문화재과학기술 Vol.2 No.1

방어산 마애삼존불의 풍화와 훼손도를 진단하였으며, 보존처리를 위한 암석학적 연구를 수행하였다. 이 마애불의 기반암은 니질기원의 퇴적암이 접촉변성을 받아 생성된 치밀견고한 청회색 호온펠스이다. 마애불 주변의 풍화면은 암갈색에서 황갈색을 보이나, 삼존불은 적갈색 또는 암흑색으로 갖는 것으로 보아 인위적 및 자연적인 훼손이 심각한 것으로 나타났다. 본존불 좌중단에는 음각선이 사라지고 없으며 암상의 변색 및 암편의 박락에 따른 계단식 풍화도 관찰된다. 마애불의 표면과 암석의 공극에는 선태류, 조류 및 지의류의 모근과 포자류가 기생하고 있으며, 절리대에서는 이미 토양화의 진행에 의하여 잡초와 잡목이 서식하고 있다. 따라서 식생과 표면의 오염물질을 제거하기 위한 세정작업이 있어야 할 것이다. 또한 마애불 본체의 구조적 안정을 위해 주변에 분포하는 불안정한 암괴의 제거가 필수적이며, 불균형의 재발생과 전면으로 발생하는 응력을 최소화하기 위한 암석지지공법이 필요하다. 균열이 심한 절리면에는 암석용 충전제를 이용한 보존처리가 가해져야 하며, 마애불에 미치는 기상변화를 저감하기 위한 차수벽과 보호각의 설치를 제안한다. The rock standing sculptured Triple Buddha of the Bangeo mountain, Korea was studied on petrological weathering and deterioration diagnosis for the future conservational treatments. Host rock of this Triple Buddha is bluish grey hornfels originated muddy sedimentary rock, which rock is very hard and compact due to the contact metamorphism. Weathered rock surface around the Triple Buddha is yellowish to dark brown color, but main Triple Buddha surface shows reddish brown to dark black because of the severely artificial and natural deteriorations. In the central left-side of the main Buddha, the carved lines are eliminated by weathering, and well developed step-like exfoliations and discoloring of lithology. Rock surface of the Triple Buddha shows partly covered with green algae and lichen. The joint planes occur some weeds and trees. This biological weathering and contaminations need for conservational cleaning and chemical treatments. The unstable rock block around the Triple Buddha most be to remove for the structural stability from the main body, and need to geotechnical methods for the minimum stress against the frontal toppling and reoccurrence of instability. For the conservation of the Triple Buddha, we suggest that fracture systems in the host rock should be to reinforce by petro-epoxy treatments, and set up a water curtain and protection house for attenuation of climatic changes.

철화분청사기 철화안료로 사용한 석간주 연구

이재황,최석원,채상정,서만철 공주대학교 문화재보존과학연구소 2003 문화재과학기술 Vol.2 No.1

한국은 오랜기간 발전된 도자문화를 지니고 있다. 한국의 도예가들은 독창적인 문화를 토대로 활동적이며 예술적인 도자기를 생산해왔다. 14세기에 이르러 9세기의 고려청자를 바탕으로한 조선시대의 독특한 분청사기가 나타났으며 분청사기 가운데 철화분청사기는 백토분장위에 철분의 안료를 사용하여 붓으로 그림을 그려 제작하였다. 철화분청사기는 주로 15세기 후반부터 16세기 전반에 걸쳐 제작되었으며 이들은 민예적인 특성을 잘 반영하여 지역별로 서로 다른 독특한 양식으로 발달함으로써 계룡산 지역에서는 "계룡산 분청"이라는 별칭으로 불리었으나 현재는 철화분청사기의 제작기술이 소멸된 상태이다. 철화분청사기의 재현을 위해 철화분청사기편을 실험한 결과, 철화안료는 화강암내의 산화광물인 자철석으로 이루어져 있으며 이것은 석간주로 불리운다. 또한 철화분청사기편을 1230°C정도의 고온에서 소성한 결과 태토가 잘 견디었으며 사라진 광택이 다시 빛을 발하였다. 따라서 계룡산 분청의 재현 및 발전을 위해 문헌에 따른 채굴장소에 대한 연구가 이루어져야 할 것이다. Korea has a long and flourishing history of ceramics. Korean potters have established a dynamic artistic civilization rooted on its unique ceramic culture. In 14th century, they had created Buncheong, based on the tradtional Korean ceramics such as the Koryo celadons of 9th century. Among the Buncheongs, Chulhwa-Buncheong ceramics were produced by using iron oxide (ferric, ferrous) as the drawing stain. A fragment of a Chulhwa-Buncheong, with a manufacturing year stamp of 1492, was found in a kiln at mountain Kyeryong located in central Korea. Chulhwa-Buncheong ceramics, which have often abstract drawings on them, have been recognized worldwide for their artistic quality. But unfortunately, the production technique of Chulhwa-Buncheong has been lost. To provide the technical criteria for systematic restoration of Chulhwa-Buncheong, the iron oxide (ferric ferrous) material used for the drawings was explored. The iron oxide used for Chulhwa-Buncheong is the magnetite (Fe_(3)O_(4)). At 1230°C, it changes black color. With no flow effect at high plasticity level, it becomes dark color of chestnut and form ferrous crystal. As described in the Choseon Dynasty's memorandum of King Young Cho's period. the iron oxide was obtained traditionally from natural materials such as Seokanju, a special kind of minerals in granite. It is concluded that the magnetite from the rock cave which had been used as the drawing stain of Chulhwa-Buncheong can be used for the restoration of the Chulhwa-Buncheong.

계룡산 구룡사지 당간지주의 기원암, 암석학적 및 보존과학적 진단

이찬희,최석원,김사덕,서만철 공주대학교 문화재보존과학연구소 2003 문화재과학기술 Vol.2 No.1

구룡사지 당간지주의 암석학적 풍화와 훼손를 진단하였으며, 보존처리를 대비한 동일 종류의 기원암을 추적하였다. 이 당간지주는 홍장석 화강암으로 구성되어 있으며 주좌는 흑운모 화강암이다. 왼쪽 지주는 완전히 파괴되어 방치되어 있으며, 오른쪽 지주는 하나의 부재로 구성되어 있으나 계단식으로 절단되어 있어 도괴의 우려가 있다. 이 지주들은 균열 및 탈락과 훼손이 심하여 박리와 박락현상이 발생하였고 석재의 표면은 입상분해 작용이 진행 중이다. 이차적 오염현황도 심각하여, 황갈색 수산화철에 의한 암석의 변색과 강수의 유동흔적을 따라 나타나는 암회색 철과 망간의 침전물이 산재한다. 지주의 주변과 암석의 표면에는 지의류와 선태류의 오염이 심각하며, 기단부는 토양화의 진행에 의하여 잡초가 암석의 생물학적 풍화작용을 가중시키고 있다. 따라서 부지 주변의 나무와 잡초 및 불연속면에 서식하는 부착생물을 제거하기 위한 생화학적 처리도 필요하다. 이 당간지주는 석재자체의 성능이 저하되어 있으므로, 균열부의 장기적인 모니터링과 함께 석재의 표면을 강화할 수 있는 처리방법을 강구해야 할 것이다. 특히 왼쪽 지주는 보존처리도 어려운 상태여서 교체하여야 할 상황이다. 이 당간지주와 동일한 암종은 하신리 무지개 농장 부근의 도로변 노두에 있다. The Flag Pole Supporting Rocks (Dangganjiju) of the Guryongsa temple site, Korea was studied on the basis of petrological weathering, conservational scientific diagnosis and presumed to source area of the original supporting rocks. Constituting rocks of this supporting rocks are pink feldspar granite, and the rounded basement is biotite granite. However, the left supporting rock is remained at perfectly destruction state in situ. The right supporting rock showed also highly fractured as step-like cutting plane which is very dangerous state because of possible collapse. As a whole supporting rocks occurred with fracturing, exfoliation or deterioration, and rock surface appeared to grain dissolution. Host rock of the supporting rocks were highly secondary contaminations, and most rock surface was color changed to the dark black to dark brown due to the clay, iron and manganese hydroxides along the rain water flow. In the vicinity of the supporting rocks and rock surface show partly green and black patchs because of coated by algae, lichen and moss. The lower part of the basement rocks are transition to the some weeds. This biological problems are need for cleaning and chemical treatments. The main materials of the supporting rocks is highly degradation, therefore the supporting rocks need to be long term monitoring in the fracture planes and to prepare for synthetic conservation treatments. Especially, the left supporting rock is difficult to conservation owing to nearly perfect destruction. In the Hashinri Mujigae farm area, the same kind of pink feldspar granitic rocks with this supporting rocks are occurred.

[S9-2] The Current Status of GM Crops and Biosafety in RDA

Seok Cheol Suh 한국식품영양과학회 2010 한국식품영양과학회 학술대회발표집 Vol.2010 No.10

Agrobacterium tumefaciens-mediated Genetic Transformation of Tobacco Using SHI Family Genes Isolated from Brassica rapa L. ssp pekinensis

Eun-Jung Suh,Seok Cheol Suh,Seong-Kon Lee,An-Cheol Chang,Yeon-Hee Lee,Jin A Kim 한국원예학회 2013 한국원예학회 학술발표요지 Vol.2013 No.10

Transgenic rice plants expressing double insecticidal genes using anther culture

Hye-Jin Yoon,Seung-Bum Lee,Seok Cheol Suh,Kyung-Hwan Kim,Eun-Jung Suh,Yeon Hee Lee 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07

Rice is one of the most important cereal crops in the world and a model plant for functional genomics of monocotyledon. Recently, rice crop loss is estimated to be approximately 30% of the total yield due to herbivorous pests, mainly insects. Cry1Ac toxin is a protein produced by the bacterium Bacillus thuringiensis and has insecticidal properties. CryBP1 toxin also is an insecticidal protein produced by the bacterium Bacillus popilliae. These two toxic genes derived bacteria, which were inserted into a binary vector, have been introduced into rice plants by Agrobacterium tumefaciens mediated transformation in order to enhance resistance to insects. Here, we utilized anthers to regenerate transgenic rice plants when it has been plated on the callus induction media as a callus-inducing material. Anther culture has a benefit in terms of being apt to produce doubled haploids in short term in plants breeding compared to seed culture. However, anther culture method in generating transgenic rice still has low productivity of plant regeneration in some genotypes of Japonica rice. Therefore, we examined the efficiency of callus induction and transformation with three different cultivars of Japonica rice, Haiami, Ungwang and Dongjin. In this study, our results showed that Haiami is the best genotype among three cultivars of Japonica rice as callus inducing material in anther culture to produce transgenic rice plants conferring resistance to insects.

Comparative Whole-Genome Analysis of Tall Transgenic Bt Line and wild-type Line

Jin-Hyoung Lee,Kong-Sik Shin,Seok-Cheol Suh,Hee-Jong Woo,Myung-Ho Lim,Yang Qin,Taek-Ryoun Kwon,Soon-Ki Park,Hyun-Suk Cho 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07

Natural and artificially induced mutants have provided valuable resources for plant genetic studies and crop improvement. Some variations induced in the process of plant transformation have often been observed in regenerated plants. In this study, we investigated the insertion number of transgene and the flanking sequences of T-DNA in tall-induced line BP23, which was unexpectedly gained in the process of transformation of insect-resistant rice with cryBP1 gene, and also analyzed the whole-genome sequencing by using the NGS technologies to gain a better understanding of the sequence and structural changes between tall line or natural cultivar and rice reference. than others, was confirmed with two copies of foreign gene insertion, which was inserted in one genomic site facing each other between the position 2,430,152~2,430,151 of rice chromosome 12 without any deletion of genomic sequences. Sequencing analysis also revealed that 18bp-unknown sequences were added in the 5′ insertion site of T-DNA. This position in rice genome was confirmed with none of expressed gene sites. By the NGS analysis, we detected 86560 SNPs and 1091/1472 large insertion/deletion (indel) sites (100bp) between BP23 and rice reference, and 84743 SNPs and 1094/1451 large indels between natural cultivar Nagdong and rice reference. The possible mechanisms for the gene mutation, the developmental and tissue expression of the taller height in BP23 line may need to be scrutinized a few more.

Analysis of junction site between T-DNA and plant genome in RWW resistance GM rice

Jin-Hyoung Lee,Kong-Sik Shin,Seok-Cheol Suh,Myung-Ho Lim,Hee-Jong Woo,Yang Qin,Soon-Ki Park 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07

Four transgenic rice lines harboring insect-resistant gene cry3A showed ideal field performances characterized by high considerable resistance to rice water weevil (Lissorhoptrus oryzophilus Kuschel). In this study, we estimated the insert number of foreign genes, and analyzed the flanking sequences of T-DNA in rice genome. As a result, The T-DNA of Btt12R 3-1-1-1 line was inserted in exon region of rice chromosome 10 and Btt12R 6-1-1-1 line was inserted in two copies of foreign gene. Btt12R 9-1-1-1 line was analyzed at only left border flanking sequence. The T-DNA of Btt12R 13-1-1-1 line was inserted one copy of foreign gene between position 24,516,607~24,516,636 of rice chromosome 5 and 30bp known genomic sequences were deleted. The Btt12R 13-1-1-1 line confirmed to be inserted in intergenic region having not any expressed gene and no any deletion/addition of T-DNA sequence. From these results, we demonstrated that the molecular data of rice water weevil resistant Bt rice could be acceptable to conduct the biosafety and environment risk assessment for GM crop commercialization

EFFECTS OF SAA PRETREATMENT ON SSF AT LOW TEMPERATURE TO BIOETHANOL PRODUCTION FROM RICE STRAW

Suh Yoon JANG,Yong Cheol PARK,Jun Seok KIM 한국신재생에너지학회 2013 AFORE Vol.2013 No.-