군 방호시설에 자철석 콘크리트 적용 시 감마선 차폐효과 분석

이상규,이호찬,이건우,한다희,박영준,Lee, Sang-Kyu,Lee, Ho-Chan,Lee, Gun-Woo,Han, Da-Hee,Park, Young-Jun 한국건축시공학회 2020 한국건축시공학회지 Vol.20 No.2

핵 및 방사능전 상황에서 방사선에 의한 인명피해를 줄이기 위한 방안으로서 유개호에 자철석이 포함된 중량 콘크리트의 적용 가능성을 확인해보았다. 이에 본 연구에서는 자철광 콘크리트의 방사선 차폐효과를 분석하기 위하여 감마선원을 사용하여 차폐실험을 진행하였고 실험조건과 동일한 몬테칼로 모델링도 하였다. 그 결과 자철광의 함량이 증가할수록 감마선에 대한 차폐효과가 향상됨을 확인할 수 있었다. 향후 자철광 콘크리트가 군사적 목적의 시설물에 적용될 경우 방사선 차폐 측면에서 효과를 얻을 수 있을 것이라 기대한다. The purpose of this research is to analyze the gamma ray shielding effect of heavy concrete containing magnetic aggregate and to confirm the applicability to the military protective facilities. In general, a military concrete structure protects combatants from bullets, and also it provides some radiation shielding. In this research, experiments were conducted using a Cs-137 source to check the gamma ray shielding effect. In addition, the Monte Carlo N-Particle(MCNP) modeling was applied to evaluate the gamma ray shielding effect of a military structure. As a result, as the concrete thickness increased, the shielding performance improved according th the linear attenuation law. With that, as the ratio of magnetic aggregate was increased, gamma ray shielding performance was also improved. Therefore, this research verified that the application of magnetic aggregate concrete to military facilities for radiation shielding purposes would be useful.

C-밴드 영상레이더 탑재체 기술 개발 현황

이상규,유상범,백명진,이현철,Lee, Sang-Gyu,Yu, Sang-Beom,Baek, Myeong-Jin,Lee, Hyeon-Cheol 한국수자원학회 2019 물과 미래(한국수자원학회지) Vol.52 No.10

논토양(土壤)의 탈질작용(脫窒作用)에 관(關)한 연구(硏究) -제(第)4보(報) 토양유기물함량(土壤有機物含量), 온도(溫度), pH, 질소비종(窒素肥種) 및 시비량(施肥量)이 탈질작용(脫窒作用)에 미치는 영향(影響)

이상규,김승환,박준규,안상배,Lee, Sang Kyu,Kim, Seung Hwan,Park, Jun Kyu,An, Sang Bae 한국토양비료학회 1987 한국토양비료학회지 Vol.20 No.1

담수상태(湛水狀態)의 논토양중(土壤中) 유기물함량(有機物含量), 온도(溫度), pH 질소비종(窒素肥種) 및 시비량등(施肥量等)을 달리했을때 탈질작용(脫窒作用)과 탈질량(脫窒量)을 알고저 질내(窒內)에서 항온시험(恒溫試驗)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 담수상태(湛水狀態)의 논토양(土壤)에서 탈질량(脫窒量)에 관계(關係)가 큰 요인(要因)은 토양유기물함량(土壤有機物含量) > 항온온도(恒溫溫度) > pH가(價) > 질소비종(窒素肥種) > 질소시비량(窒素施肥量)의 순(順)으로 컸다. 2. $N_2O$ gas의 생성량(生成量)은 토양유기물함량(土壤有機物含量) 3.0%인 토양(土壤)에서 항온온도(恒溫溫度) $20^{\circ}C$, pH 6.0일때 $KNO_3$ 20mg/100 토양(土壤) 시용구(施用區)에서 가장 많았다. 3. $N_2O$ gas 1 mole 생성(生成)하는데 소모(消耗)되는 탄소(炭素)는 전체평균(全體平均)이 0.5 mole 이였으며 탄소량(炭素量)이 제일(第一) 많이 요구(要求)되는 경우는 토양유기물함량(土壤有機物含量) 1.0%인 토양(土壤)에서 류안(硫安) 10mg/100g 토양(土壤) 시용시(施用時)(1.06 mole)였으며 제일(第一)적은 탄소요구(炭素要求)의 경우는 유기물함량(有機物含量) 3.0%인 토양(土壤)에서 $KNO_3$ 20mg/100g 토양(土壤) 시용시(施用時)(0.13 mole)였다. 4. Michealis-Menten의 효소반응식(酵素反應式)에서 유도(誘導)된 $N_2O$ gas의 V/2가(價)는 유기물(有機物) 1.0% 토양(土壤)에서 $(NH_2)_2CO$ 시용시(施用時) 550, $KNO_3$ 시용시(施用時)는 $1100N_2O{\mu}g/100g$ 토양(土壤)이였고 3.0%인 토양(土壤)에서 $(NH_4)_2SO_4$ 시용시(施用時)는 $490N_2O{\mu}g/100g$ 토양(土壤)이였으며 $KNO_3$ 시용시(施用時)는 시비량(施肥量)이 증가(增加)할수록 V/2가(價)는 계속 증가(增加)되었다. A series of laboratory experiments were carried out to find the effects of soil organic matter contents, soil temperature, pH values, kinds and amount of nitrogen fertilizers on the denitrification-$N_2O$ gas evolution-. The results obtained were summarized as follows: 1. Denitrification rate, amount of $N_2O$ gas evolution, was influenced the order of organic matter contents>soil temperature>pH values>kinds of N-fertilizer>levels of N-fertilizer. 2. The highest dentrification rate was observed in organic matter content of 3.0%, pH values at 6.0 with application of $KNO_3$ at levels of 20 mgN/100g soil. 3. For the evolution of I mole $N_2O$ gas, averaged carbon consumption was obtained as 0.5 mole in all these experiment condition. However, the highest carbon consumption rate was obtained in organic matter contents for 1.0% with application of $(NH_4)_2SO_4$ at levels of 10 mgN/100g soil (1.06 mole) while lowest carbon consumption rate was obtained in organic matter contents for 3.0% with application of $KNO_3$ at levels of 20 mgN/100g soil (0.13 mole). 4. According to Michaelis-Menten's equation, the V/2 values for evolution of $N_2O$ gas was estimated by progress curve. The results obtained was as 550 ug for $(NH_2)_2CO$ and 1100 ug $N_2O/100g$ soil by application of $KNO_3$ in organic matter contents of 1.0% soil. On the other hand, when the application $(NH_4)_2SO_4$ the V/2 values of $N_2O$ gas was obtained as the amount of 490 ug/100g soil while V/2 values of $N_2O$ gas by application of $KNO_3$ was on the linear line in soil organic matter contents of 3.0%.

선천성 횡경막 이완증

이상규,박동원,장수일,Lee, Sang-Kyu,Park, Dong-Weon,Chang, Soo-Il 대한소아외과학회 1998 소아외과 Vol.4 No.1

신생아 및 영아에서의 횡격막 이완증은 일반적으로 드문 질환으로 인식되어 있지만 이에 대한 정확한 진단과 적절한 원인별 처치의 필요성은 널리 알려진 사실이다. 최근 저자 등은 5 례의 선천성 횡격막 이완증을 경험할 수 있었고, 전 례 모두 수술이 적응되었다. 전 례 모두 생후 2개월 미만의 영아였고 모두 남아였다. 이완 부위는 전 예에서 좌측 횡격막이었다. 증상은 3례에서 호흡기 증상이 있었고 소화기계 증상은 없었으며 나머지 1례에서는 체중 증가불능 이 외는 무증상이었다. 전 예에서 방사선학적 변화가 저명하였고, 횡격막의 절정은 제 3에서 제 5늑간에 달하였다. 수술 술기로 저자 등은 경복부 접근 방법에 의한 횡격막 습벽 봉합술을 선호하였으며 수술 결과는 임상적으로나 방사선학적으로 우수하였다. Although diaphragmatic eventration in newborn infants is generally regarded as a rare condition, the need for accurate diagnosis and appropriate intervention according to the etiological factors is well known. Recently the authors experienced five consecutive cases of diaphragmatic eventration below the age of two months(one to 55 days) requiring surgery. All were in males, and were left sided. Respiratory symptoms were present in 4 patients, and one patient showed inability to gain weight. Diaphragms were elevated to the level of the third to fifth intercostal spaces. Diaphragmatic plication through the abdomen gave excellent results. There was no postoperative mortality.

딥러닝 모델에서 증강 데이터를 활용한 선행 학습

김혁주(HyukJu Kim),방채영(ChaeYoung Bang),이동수(DongSu Lee),안홍렬(Hongryul Ahn) 한국정보과학회 2021 한국정보과학회 학술발표논문집 Vol.2021 No.6

흡연과 음주가 남성 암 사망에 미치는 영향: 강화 코호트 연구

이상규,남정모,이상욱,오희철,Lee, Sang-Gyu,Nam, Chung-Mo,Yi, Sang-Wook,Ohrr, Hee-Chul 대한예방의학회 2002 예방의학회지 Vol.35 No.2

Objective : To examine the relationship between cigarette smoking, alcohol and cancer mortality in men in the Kangwha cohort after 12 years and 10 months of follow up. Methods : The subjects consisted of 2,681 men in the Kangwha cohort aged over 55 in 1985. Number of deaths and the time to death front all cancers and other cause were measured and the data for the smoking and drinking habits were obtained from the baseline survey data in 1985. All subjects were categorized into four groups according to their smoking habits: non-smokers, ex-smokers, mode(ate-smokers (1-19 cigarettes per day), heavy-smokers ($\geq$20 cigarettes per day). In addition, they were also categorized according to their drinking habits: non-drinkers, light-drinkers ($\leq$1 drink per week), moderate-drinkers (<3 drinks per day), heavy-drinkers ($\geq$3 drinks per day). The cancer specific death rates were calculated according to their smoking and drinking status. The adjusted risk ratio for all cancer deaths according to their smoking and drinking status were estimated using the Cox's proportional hazard regression model. Results : Using nonsmokers as the reference category, the adjusted risk ratio for all cancer deaths were 1.573(95% CI=1.003-2.468) for heavy-smokers. For lung cancer deaths, the adjusted risk ratios were 3.540(95% CI=1.251-10.018) for moderate-smoker and 4.114(95% CI=1.275-13.271) for heavy-smokers. Compared to non-drinkers, the adjusted risk ratio for stomach cancer was 2.204(95% CI=1.114-4.361) for light-drinkers. Conclusion : Smoking is the most significant risk factor for cancer deaths particularly lung cancer.

우리 나라 병원들의 건강증진 서비스 도입 현황과 이에 영향을 미치는 요인

이상규,박춘선,강명근,함명일,이순영,조우현,Lee, Sang-Gyu,Park, Choon-Seon,Kang, Myung-Guen,Hahm, Myung-Il,Lee, Soon-Young,Cho, Woo-Hyun 대한예방의학회 2001 예방의학회지 Vol.34 No.4

Objectives : To investigate the current status of hospital-based health promotion programs in Korea and to elucidate the factors which affect to the process of implementation. Methods : We conducted a mail survey of all 875 hospitals in Korea from March to May 2001. In reference to 12 specific kinds of health promotion programs, hospital CEOs were asked whether their hospital have such programs, whether they are fully staffed and whether the program is paid for by the patients. Contextual factors(location, hospital type, number of beds, length of operation, public/private status, economic level of the community, the level of competition) and organizational factors (the extent of market, compatibility with vision, formalization), strategic types of the CEOs (defender/analyser/prospector) were also surveyed. The relationships between each variable and the implementation of health promotion services, activation of services, and the target groups(patient/community resident) were analyzed by univariate analysis and the independent effects of these variables were examined with multiple logistic regression. Results : 100 of 125 hospitals responding (84.8%) had mere than one health promotion program. However, they showed fluctuations in the adoption rate of each programs, meaning that comprehensive health promotion services were not provided. Many programs were not fully staffed and few hospitals had paid programs. In factors affecting health promotion service implementation, private hospitals showed a higher rate in implementation than public hospitals. In contrast, when the competition among nearby hospitals was intense, the level of implementation of service lowered. In the strategic type of the CEOs, the prospectors were shown to have instituted more health promotion programs in their hospitals and the analysers had a greater tendency to have programs for community residents than the defenders. Conclusion . Considering the above results, contextual factors may contribute greatly to the introduction of health promotion services in Korean hospital, although the CEO's personal preference and organizational factors play a larger role in the activation of services. Additionally, the CEO's personal preference may be the major influencing factor in the introduction of programs for community residents.

소양인(少陽人) 망음증(亡陰證) 치료(治療) 임상례(臨床例)

이상규,이의주,고병희,송일병,Lee, Sang-gyu,Lee, Eui-ju,Koh, Byung-hee,Song, Il-byung 사상체질의학회 2001 사상체질의학회지 Vol.13 No.3

Mangeum-disease is important syndrome in soyangin's pathology taking urgent diarrhea. In this case study, we diagnose one patient as mangeum-disease. She had a cold before and took a medical treatment with antibiotics. During the treatment she had a diarrhea, palpitation, arrhythmia and edema. We diagnose it as mangeum-disease. So we dose her with hyungbangjihwangtang and we had a good result-all symptoms are disappeared in two months.

Position of Source Leaf Affects Translocation and Distribution of C14 Photo-Assimilates in Tomato

이상규,Chiwon W. Lee (사) 한국생물환경조절학회 2006 시설원예‧식물공장 Vol.15 No.2

The relationship between source leaf position and photo-assimilate translocation and distribution was characterized for tomato (Lycopersicon esculentum Mill) grown in the greenhouse. Three different positions of source leaf on the stem (first node above or below the first fruit cluster and 5th node above the first fruit cluster) were tested for their influence on 14CO2 assimilation and transfer to different parts of the plant. The leaves at the 5th node above the first fruit cluster transferred the highest (57%) proportion of C14 to other plant parts, followed by leaves borne on the first node below the first fruit cluster (50%), and the first node above the first fruit cluster (39%). In all treatments, fruits served as the strongest sink for C14, followed by stem, leaf, and root tissues. The leaf borne on the 5th node above the first fruit cluster transferred the largest amount of C14 to the second fruit cluster.

답토양(畓土壤)의 유기물(有機物) 시용효과(施用效果)

이상규,박준규,Lee, Sang-Kyu,Park, Jun-Kyu 한국응용생명화학회 1984 Applied Biological Chemistry (Appl Biol Chem) Vol.27 No.suppl.

As in many other country, the use of organic matter in Korea has long history. Farmers understand the value of organic matter as the source of plant nutrient and soil improving agent in general. Since 50 years ago, the sources of organic matter in paddy soils were compost, rice and barly straw, green manure, animal waste, fish and beancake, etc.. Application of green manures such as vetch and chinese milk vetch showed no significant effect on the yield of brown rice in paddy soil. On the other hand, the effects of compost and rice straw showed more significant on the yield of brown rice in paddy soil. Application of rice straw in rice cultivation is commonly made at different times between harvest, early spring and several weeks before transplanting. Considering the suitable paddy soil for application of rice straw under well to moderately well drained soil, the yield was pronounced more than poorly drained soil. Based on laboratory and field experimants, application of rice straw promoted the decrease of oxidation-reduction potential in well to moderately well drained soil. This results to be enhanced the release of some mineral nutrients,. such as potassium, calcium, silicon, and increase of availability of soil phosphorus. In the field experiments, results obtained from nitrogen fraction on the immobilization-mineralization of the tracer nitrogen applied in paddy soil,the amount and index of organic nitrogen incoporated in soil was more pronounced in rice straw application than control. Rice straw and its transformation products incoporated in the soil, provided the inflow of energy necessary to maintain heterotrophic microbes activities. Rice straw and its transformation products, especially soluble carbohydrate, enhanced the population of free-living heterotrophic $N_2$ - fixing microbes. Moreover, rice straw and its transformation products in paddy soil, enhanced the activities of soil enzymes such as dehydrogenase and urease.