고로슬래그를 활용한 바탕콘크리트 내구성 향상에 대한 연구

장용 ( Jang¸ Yong ),강예진 ( Kang¸ Ye-jin ),이동운 ( Lee¸ Dong-oun ),김대건 ( Kim¸ Dae-geon ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.2

When the final finish of a building is designed with base concrete, complex deterioration occurs due to the harsh environment such as shrinkage and expansion due to external temperature changes, freezing and thawing, and the use of calcium chloride due to snow accumulation. Therefore, the pozzolanic reaction mechanism of blast furnace slag is clearly identified, and the causal relationship between the material properties and performance of the blast furnace slag is identified to present guidelines for mixing high-durability concrete.

정신과 문제로 병사용 진단서를 발급받은 환자들의 임상적 특징

장혁진,김학렬,박상학,김상훈,조용래,표경식 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.2

Background and Objectives : Most Korean young men should take a military physical examination. This study attempted to search the social, economical and psychological features of Korean youths who have psychiatric problems in taking the military physical examination. So this study was intended to help decide whether the youths enter the military service or not. Materials and Methods : This study analyzed diagnostic features that were grouped by 7 categories (antisocial and borderline personality disorder group, the other personality disorders group, psychosis group, organic mental disorder group, neurosis group, pervasive developmental disorders group, the other groups). The study was conducted from 1994 to May 1999 at Chosun University hospital with about 143 patients who were issued the psychiatric certificate for military affairs. Results : According to the results of the psychiatric examination, the antisocial and borderline personality disorder group had increased more year by year than the other groups. Classified by the residential distribution, the residents of agricultural areas belonged to the psychosis group more than others. Classified by the job distribution, the antisocial and borderline personality disorder group had more gangsters than the other groups. Also the pervasive developmental disorders group included those Who were without an occupation. Classified by visiting companion, those who were included in the antisocial and borderline personality disorder group and pervasive developmental disorders group used to come alone as compared with the other groups. In the case of those who have experienced psychiatric treatment in the past and who have been treated psychiatrically after being given the psychiatric certificate, the psychosis group comprised more than 50% statistically. In the case of the existence of a tattoo and self-injured scars, the antisocial and borderline personality disorder group has more than the others statistically. According to psychological examination, by measure of validity scale of MMPI, the antisocial and borderline personality disorder group appeared as the inverted V shape that L, K value was low and F value was high. And the antisocial and borderline personality disorder group measured by the Pd, Pa measure. Pd, Pa measure value got higher points than the organic mental disorder group statistically. Conclusion : The number of the antisocial and borderline personality disorder patients’ visits increased at the psychiatric hospital year by year and there were many gangsters or persons without regular occupation in that kind of patients’group. And there were many visitors who came by themselves to the hospital. Also they tended to have a tattoo or self-injured scars. And most of patients didn’t do commuting psychiatric care after receiving the psychiatric certificate. In the aspect of the psychological examination, they were likely to exaggerate their symptoms or disguise having psychiatric trouble intentionally.

건강한 한국인에서의 배변 조영술 소견

나용호,장명규,김태현,김형언,유광현,진경민 大韓消化器病學會 1995 大韓消化器病學會誌 Vol.27 No.3

자동차 관련직종 근로자의 근골격계 증상 호소율에 관한 연구

이용진,장은철 순천향의학연구소 2007 Journal of Soonchunhyang Medical Science Vol.13 No.2

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수용성 키틴이 백서 창상치유에 미치는 영향

강장석,조용남,정상훈,유 결,임진수,권 호,조용우,고석원 大韓成形外科學會 2001 Archives of Plastic Surgery Vol.28 No.1

[논문]실시간 정밀 3차원 지형측량기법을 이용한 저수량산출시스템 개발

송석진,장용구,김상석,강인준 釜山大學校生産技術硏究所 2004 生産技術硏究所論文集 Vol.63 No.-

현재 고정밀도 저수량 측량에 사용되는 측량장비에는 수평위치결정방법으로 실시간 DGPS측량장비가 많이 활용되고 있고, 수심측량에는 디지털 음향측심기를 많이 사용하고 있다. 본 연구에서는 현재, 수심측량 결과처리 시 문제가 되고 있는 소프트웨어의 가격부담을 줄이고 수심측량과 내업처리에 의한 저수량산출을 통합처리 할 수 있는 국내 자체개발의 저가형 외 · 내업 일체형 저수량산출시스댐을 개발하였다.

설악산 국립공원의 어류분포

장민호,조가익,하진용,정광석,박성배,주기재 한국어류학회 2002 韓國魚類學會誌 Vol.14 No.4

설악산 국립공원지역 산간계류의 17개 지점에서 2000년 6월부터 2001년 6월까지 어류상 및 이화학적 요인을 계절별로 총 4회에 걸쳐 분석하였다. 모든 조사지점은 1~3차의 하천으로 비교적 물리·화학적 교란이 적었으며 하천폭은 5~30 m 정도였다. 채집된 어류는 총 18과 42종 2,557개체였고, Cyprinidae는 16종으로 84.7%의 상대풍부도를 나타냈으며, Gobiidae 4종, 5.0?의 상대풍부도를 보였다. Cyprinidae는 전체 채입종의 37.2%를 나타냈다. 우점종은 Zacco temminck로 10개 지점에서 738개체가 채집되어 28.9%의 상대풍부도를 나타냈으며, 아우점종은 Rhynchocypris kumkangensis와 Z. platypus로 각각 4개 지점 648개체(25.3%)와 7개 지점 344개체(13.5%)로 나타났다. 한국고유종(Korean endemic species)은 모두 4과 11종 781개체로 30.5%의 상대풍부도를 나타냈으며, 고유화 빈도는 25.6%로 한국의 평균 고유화 빈도와 유사하게 나타났다. 본 조사에서 외래어는 채집되지 않았다. 국립공원 내에 서식하는 어류의 다양성 유지와 회복을 위해서는 공원 내는 물론 경계지역 하천의 체계적인 관리가 요구된다. The fish fauna of mountain streams in the Seorak National Park area was investigated from June 2000 to June 2001 (4 times). All 17 sites were relatively undisturbed 1st to 3rd order streams. A total of 2,557 individuals were collected and classified into 17 families and 43 species. Cyprinidae accounted for 37.2% (16 species) of the total fish species and 84.7% (2,165 ind.) of the total abundance. Subdominant families were Gobiidae (4 species, 5.0%) and Balitoridae (3 species, 3.4%). Zacco temmincki (RA 28.9%, 10 sites) dominated. Subdominant species were Rhynchocypris kumkangensis (25.3%, 4 sites) and Zacco platypus (13.5%, 7 sites). Eleven of the species are endemic to Korea (4 families, 30.5%). Exotic species were not collected in this survey. Fish diversity was higher in streams around the boundary area than in the national park. Therefore, management of streams in the boundary area to protect the fish biodiversity can be efficiently conducted. Habitat degradation should be reduced for the conservation and restoration of fish diversity.

소아 혈중 연농도에 관한 조사

이용환,이덕희,김진하,박인근,한태영,장세한 大韓産業醫學會 1995 대한직업환경의학회지 Vol.7 No.1

지리적 위치에 따라 소아들에 있어서 혈중 연농도에 차이가 있는지의 여부와 소아들의 혈중 연농도의 참고치 계산을 위한 기초자료를 얻기 위하여 6-8세의 도심지역 거주 소아 102명과 교외지역 거주 86명, 총 188명을 대상으로 조사하여 다음과 같은 결과를 얻었다. 1. 전체 소아들의 평균혈중 연농도는 산술평균이 7.24, 기하평균이 6.92 ㎍/100㎖이었으며 남자가 여자보다 통계적으로 유의하게 더 높았다(p<0.05). 2. 도심지역과 교외지역 거주 소아들의 혈중 연농도는 도심지역거주 소아가 남, 녀 모두에서 교외지역 거주 소아보다 통계적으로 유의하게 더 높았다(p<0.05). 3. 혈중 연농도에 따른 분포에서는 <5 ㎍/100㎖군에 조사대상자 188명의 17.02%가 분포되었고 도심지역(5.88%)보다 교외지역(30.23%)에서 더 많은 분포를 보였으며, 10 ㎍/100㎖이상 군에는 전체 소아의 12.23%가 분포하고 있었으며, 도심지역(20.59%)이 교외지역(2.33%)보다 더 많이 분포하고 있었다. 이상의 결과에서 볼 때 도심지역 거주 소아들에 대한 연폭로의 관리대책이 시급히 마련되어야 할 것으로 판단된다. The authors conducted this study to evaluate some differences in blood lead levels between inner-city and suburban children and obtain the basic data of the reference value of the blood lead concentrations in children. The subjects were composed of 102 children residing in inner-city and 86 children in suburban. Their age range were 6 to 8 years old and the obtained results were as follows; 1. The arithmetic means of the blood lead level in male and female, male, and female children were 7.24, 7.40, 7.08 ㎍/100㎖, and geometric means were 6.92, 7.08, 6.76㎍/100㎖, respectively. 2. The children residing in inner-city had the higher blood lead levels both male and female than suburban children with statistical significance(p<0.05) 3. Seventeen percent of the total subjects had lead concentrations < 5 ㎍/100㎖, and 5.88% of inner-city children and 30.23% of suburban children had this lead values. But in ≥10㎍/100㎖ group, the inner-city children(20.39%) were more distributed than suburban children(2.33%), and 12.33% of total subjects had this lead values.

고강도 콘크리트(80MPa이상)를 이용한 콘크리트충전강관구조 적용을 위한 기초물성 연구

이장환,강용학,정근호,김진호,정상진,최문식 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

One of the most important reasons that CFT is used in many conditions is by using that we can achieve the effect, which reduce the section of the member. This research purpose to find the most ideal composition, which is achieved by the investigation in the concrete's property of matter like ability of Slump, Slump Flow, Air content, Bleeding, and Settlement when the high strength of concrete which is over 80MPa is used m the CFT column.

2.5-헥산디온에 노출된 근로자에게서 발생한 말초 신경병증

조성용,장용석,최은경,김진석,유재영,우극현,최태성 대한산업의학회 2007 대한직업환경의학회지 Vol.19 No.1

목적: 영상음향장비 제조업체에서 2,5-헥산디온을 취급한 근로자에게서 발생한 다발성 말초 신경병증 환례를 보고하고, 동일 공정근로자들의 말초 신경기능을 조사하고 자 한다. 방법: 환례에 대해 방사선학적 검사, 소변 및 혈액 검사, 신경전달속도 검사, 작업환경 측정을 하였으며, 2,5-헥산디온의 노출을 중단시킨 후 5개월 후에 다시 신경전달속도 검사를 하였다. 동일공정 근로자들의 영향평가에서는 2,5-헥산디온에 노출된 13명의 남자 근로자를 노출 군으로, 해당 물질에 노출된 적이 없는 5명의 남자 근로자를 비노출군으로 선정하여 검사를 하였다. 결과: 환례의 신경전도 검사결과 양측 척골신경과 정중 신경에 이상소견을 보였으며, 호전여부를 관찰하기 위하여 5개월 후 추적검사를 실시한 결과 증상 및 신경전달속도 검사결과가 호전되었다. 동일공정 근로자들의 영향평가에서 노출군의 정중 신경과 척골신경이 비노출군에 비하여 유의하게 감소되어 있었다. 감각 신경의 진폭의 경우, 노출군의 정중 신경과 비복 신경이 감소되었으며, 운동 신경 전도속도에서는 노출군의 비골신경이 유의하게 감소되어 있었다. 말단 잠복기에서는 노출군의 정중신경, 척골신경, 비골신경, 경골신경이 비노출군에 비해서 유의하게 연장되어 있었다. 결론: 환례의 증상과 신경전달속도 검사의 이상소견은 2,5-헥산디온에 의한 말초신경병증에 부합되었다. 동일공정 근로자 건강영향평가에서 신경전달속도 검사결과 노출 군과 비노출군간의 유의한 차이가 있었는데, 이를 통해 2,5-헥산디온이 근로자들의 신경독성에 영향을 줄 수 있다는 것을 확인할 수가 있었다. Objectives: This study is a case report of 2,5-hexanedione induced occupational peripheral polyneuropathy. We also investigated the peripheral nerve function of all workers who had been exposed to 2,5-hexanedione in the same process. Methods: In June, 2006, a 2,5-hexanedione exposed worker complained of both hand numbness. He received neurologic, radiologic, laboratorial and electrophysiologic evaluation, including measurements of workplace environment. Five months after cessation of exposure to 2,5-hexanedione, a follow-up electrophysiologic examination was done. We evaluated the peripheral nerve function of 2,5-hexanedione exposed workers by comparing 13 male 2,5-hexanedione exposed workers who were in same company with the patient and 5 male workers who had not been exposed to 2,5-hexanedione. Results: Under electrophysiologic examination, there were abnormalities in sensory and motor nerve velocity, terminal latency, and F-latency of both median nerve and ulnar nerve. After 5 months, the patient symptoms and the results of follow-up electrophysiologic examinations were improved. Comparing the 2,5-hexanedione exposed group with the unexposed group, the sensory nerve velocity of the median and ulnar nerves in the exposed group was decreased. The motor nerve velocity of the peroneal nerve, and sensory nerve velocity of the median and sural nerves were decreased. Terminal latency of median, ulnar, peroneal, and tibial nerves in the exposed group were increased compared with the unexposed group(<0.05). Conclusions: 2.5-hexandione can induce peripheral polyneuropathy in male workers.