농업부문 에너지 수급 구조와 전망

김연중(Yun-Jung Kim),박기환(Ki-Hwan Park),강창용(Chang-Yong Kang),김윤형(Yun-Hyung Kim),김한호(Han-Ho Kim),오세익 한국농촌경제연구원 2010 한국농촌경제연구원 기본연구보고서 Vol.- No.-

According to economic development and changes in internal and external economic conditions, the energy consumption structure and consumption by energy source of our country are largely changing. Nevertheless, South Korea depends on imports for most of its energy, because natural energy resources are insufficient, and is very sensitive to energy-related issues. Recently, because the International Convention on Climate Change raised concern about diminishing fossil fuels and global warming, the importance of energy efficiency is increasing. To understand the energy input structure of the agricultural sector in order to prepare for efficient energy management plans, it is necessary to predict energy consumption by main items. For this, input-outpur analysis was conducted. It was found that our agriculture and forestry and fisheries industry consumed 3.79 million tons oil equivalent(toe) in 2007, and the agriculture sector is expanding; on the other hand, the livestock and forestry and fisheries sectors are generally shrinking. The agriculture sector remarkably uses energy for vegetables and flowering plants, and in the case of vegetables, consumption has increased by more than 9%, and even consumption of flowering plants has increased by more than 11% above the annual average. In addition, the energy input coefficient in the agriculture sector decreased by more than 30% compared with 1995, confirming that, in general, dependence on energy is being avoided. The agriculture sector is an industry dependent on energy as a result of the relatively large input coefficient in horticulture. Meanwhile, domestic new renewable energy use in our country is just 2.43% of total consumption of the first energy but has shown a tendency to swiftly increase the supply rate of new renewable energy since 2000; however, consumption in the agriculture sector is mainly oil related compared with other industries, and the consumption of new renewable energy is almost nothing. Nevertheless, the government established a goal of expanding the supply rate level of new renewable energy to 4.3% in 2015, 6.1% in 2020, and 11% in 2030, so the use of new renewable energy is expected to increase even in the agriculture sector in the future. Energy is the most important resource for the entire range of the national economy, and because of the effect of oil price increases, it has become a major interest of agriculture. Therefore, the government is preparing various policies for the efficient use of energy as well as energy saving. Accordingly, it is important to plan energy-related efficient policy by supplying basic data on energy policy establishment in the agriculture sector by analyzing the supply and demand status of clean energy in the agriculture sector along with the potential energy demand of the main agricultural and livestock products.

백혈병 110 예의 임상적 관찰

김연중 ( Yun Jung Kim ),김국륭 ( Kook Young Kim ),송양근 ( Yang Keun Song ),이룡웅 ( Yong Ung Lee ) 대한내과학회 1972 대한내과학회지 Vol.15 No.1

Clinical observation was performed on 110 cases of leukemia including 82 cases of acute leukemia and 24 cases of chronic leukemia and one case each of stem cell leukemia, leukosarcoma, aleukemic leukemia. and subacute leukemia (type unknown) for 7 years fr

농업부문 에너지 수급전망과 청정에너지 농업시스템 구축(1/2차연도)

김연중(Yean-Jung Kim),박현태(Hyun-Tae Park),강창용(Chang-Yong Kang),박기환(Ki-Hwan Park),정은미(Eun-Mee Jeong),김윤형(Yun-Hyung Kim),이웅연(Woong-Yeon Lee),박민지(Min-Ji Park) 한국농촌경제연구원 2010 한국농촌경제연구원 기본연구보고서 Vol.- No.-

BaTio<SUB>3</SUB> 조성비 변화에 따른 청자소지물질의 특성

윤미영(Miyoung Yun),김연중(Yeon Jung Kim),임헌자(Lim Hun Ja) 한국표면공학회 2012 한국표면공학회지 Vol.45 No.1

In order to improve the mechanical roperties of the Gangjin celadon BaTiO3 was added into the raw materials of celadon matrix. Through SEM and XRD analysis the structural changes were observed and the hardness values were measured. We could confirm that the mechanical strength considerably increased in the BaTiO3 added celadon through the measurement of hardness values. The increase of mechanical strength values in the celadon may result from the compositional change in the microstructure such as grain boundary area through EDAX analysis. We might suggest a fundamental idea to improve the mechanical intensity of the celadon.

측두 하악 관절 장애 환자의 파노라마 영상과 cone beam형 전산화 단층 영상의 비교

이동렬(Dong-Yul Lee),김연중(Yun-Jung Kim),송윤헌(Yun-Heon Song),이남호(Nam-Ho Lee),임용규(Yong-Kyu Lim),강승택(Sung-Taek Kang),안석준(Sug-Joon Ahn) 대한치과교정학회 2010 대한치과교정학회지 Vol.40 No.6

본 연구는 교정 진단 및 치료 계획에 어려움을 줄 수 있는 측두 하악 관절 장애 증상을 보이는 환자의 cone beam computed tomography (CBCT) 영상과 파노라마 영상을 비교하여 파노라마 영상의 유용성을 알아보고자 하였다. 2008년 6월부터 2008년 11월까지 측두 하악 관절 부위의 이상 증상으로 치과 의원에 내원한 환자를 대상으로 임상진단과 파노라마 촬영을 시행 후 CBCT로 촬영한 106명, 212개 관절을 대상으로 영상의 결과를 비교하였다. 2명의 치과의사가 하악 과두의 골변화의 양상을 관찰하여 정상(normal), 편평화(flattening), 골경화(sclerosis), 골증식체(osteophyte), 침식(erosion)으로 나누었다. 그 결과로 첫째, 검사자간 신뢰도에서 파노라마(weighted kappa: 0.714), CBCT (weighted kappa: 0.727) 각각의 영상 진단 일치도가 높았다. 둘째, CBCT 영상에 대한 파노라마 영상의 A 검사자의 민감도는 82.4%, 특이도는 58.1%였으며 B 검사자는 각각 84.3%, 61.5%였다. 셋째, 파노라마 영상과 CBCT 영상이 5% 유의수준에서 두 영상 간 판독이 동일하지 않았다. 이상의 결과는 파노라마 영상이 CBCT 영상과 비교할 때 비교적 높은 80% 이상의 민감도를 보여 측두 하악 관절 골 변화의 일차적인 진단수단으로 임상적으로 유용하게 사용될 수 있다는 것과 측두 하악 관절의 골 변화가 파노라마 영상에서 불분명한 경우 CBCT를 사용하였을 때 더욱 정밀한 진단이 될 수 있다는 것을 보여주었다. (대치교정지 2010;40(6):364-372) Objective: This study was designed to assess the diagnostic validity of digital panoramic radiographs compared to cone beam computed tomography (CBCT) in patients with temporomandibular joint disorders. Methods: Panoramic radiograph and CBCT were taken from a total of 212 joints from 106 subjects. The joints were examined by two dentists and divided into the following six groups: normal, flattening, osteophyte formation, erosion, sclerosis, and unclassified. The sensitivity and specificity of each observer and inter-observer reliability were statistically analyzed. Results: The results showed relatively high intra-observer reliability in the diagnosis of both panoramic and CBCT images and the weighted Kappa indices of panoramic and CBCT images were 0.714 and 0.727, respectively. The sensitivities of panoramic images of observer A and B to CBCT images was 82.35% and 84.30%, respectively, while the specificity of observer A and B was 58.06% and 61.54%, respectively. However, guided diagnosis from panoramic and CBCT images were statistically different (p < 0.05). Conclusions: The present study suggests that the panoramic radiograph could be used as a primary diagnostic device to detect bony changes of temporomandibular joints in clinical orthodontics, because panoramic images showed relatively high sensitivity compared to CBCT images. However, CBCT images may be one of the best choices when a more accurate diagnosis is necessary. (Korean J Orthod 2010;40(6):364-372)

암메바성 육아종에 병발한 직장암의 1 예

정명희 ( Myung Hee Chung ),김연중 ( Yun Jung Kim ),이보영 ( Po Young Lee ),김용진 ( Yong Jin Kim ),정상열 ( Sang Yul Chung ) 대한내과학회 1969 대한내과학회지 Vol.12 No.7

Treatment of ameboma or ameobic granuloma is basically medical. However, because of the similarity in clinical manifeatations with malignant tumor of the colon, surgery has been applied from time to time- by mistake, which has caused frequent complications

기관지담도누 , 선천성 무담낭증 및 어린선을 동반한 1 예

최흥재 ( Heung Jai Choi ),허갑범 ( Kap Bum Huh ),정진각 ( Chin Kak Chung ),김연중 ( Yun Jung Kim ) 대한내과학회 1969 대한내과학회지 Vol.12 No.5

A case of bronchobiliary fistula associated with congenital absence of gall bladder and ichthiosis is presented. The patient is a 28 years old Korean farmer complaining of severe cough with massive bile stained sputum for 10 months. Jaundice was present fo

방사선 분할조사후 잠재치사손상의 회복에 관한 연구

김연중,김정진 한양대학교 의과대학 1987 한양의대 학술지 Vol.7 No.1

Recovery from potentially lethal damage (PLD) after split-dose (fractionated) irradiation was studied in Vero cells in vitro. Unfed plateau phase cells were irradiated 0 and 3 Gy as priming dose (D₁) and then were incubated for 24 hours. After test dose irradiation (D₂) of 1,3,6 and 9 Gy, cells were left in situ for 0.1.2.3.4.5.6 and 24 hours, and then were typsinized and explanted into culture dishes containing fresh media feeder cells to make the total number of cells constant. Cell survival was estimated by colony forming ability and the increase of cell survival fraction with incubation time before explantation was compared between split and single dose irradiation. As the incubation time after test dose irradiation increased, the PLD repair progressed rapidly and saturated in 2 to 6 hours. The saturated level of PLD repair increased with test radiation dose. These patterns of recovery of PLD after split dose irradiation was quite similar to those after single dose irradiation. When the dose-survival curves were fitted to the linear-quadratic model, the linear inactivation coefficient (α) decreased progressively to zero but quadratic inactivation coefficient (β) increased only by 1.6 to 1.7 times as the PLD is repaired with progression of time after split dose irradiation as well as after single dose irradiation. In conclusion, the pattern of recovery of PLD after split dose irradiation was not different from that after single dose irradiation. And from these data, the effect of recovery of PLD on final cell survival fraction after multiple fractionated irradiation is expected to be great.

臨床材料에서 分離한 葡萄球菌의 性狀에 對하여

李東翰,金然中,權燦淑,金錫水,金寅淑,趙澈九,朴?阿,盧敬正 中央醫學社 1972 中央醫學 Vol.23 No.3

The activity of twelve biological characteristics which could serve as a means for the identification of pathogenic staphylococci was studied on 161 strains of staphylococci isolated from pathological sources, such as pus, urine, cervical discharge, blood and sputum, and the following results were obtained. 1. Approximately 90. 06 per cent of all the strains tested showed positivemannitol fermentation. Mannitol fermentation reaction revealed the highest positivity in comparison with the other biological activities. 2. The positive strains of coagulase, phosphatase, fibrinolysin production and deoxyribonuclease reaction showed 75.78, 73.55, 70.59 and 76.28 per cent, respectively. The activity of these three biological characteristics was approximately the same as that of coagulase production. 3. The positive strains which were active in gelatin liquifaction, pigment, protease, lipase, alpha-, beta-, and delta-hemolysin production were respectively less than 50 per cent. 4. The strains originated from pus and sputum were generally the highest positivity in the activity of twelve biological characteristics tested, surveying in relation to pathological sources.