경주국립공원 문화재지정구역의 귀화식물 현황 및 관리방안

윤정원 ( Jung Won Yoon ),신현탁 ( Hyun Tak Shin ),이명훈 ( Myung Hoon Yi ),김기송 ( Gi Song Kim ),성정원 ( Jung Won Sung ),박기환 ( Ki Hwan Park ),이창현 ( Chang Hyun Lee ),김용식 ( Yong Shik Kim ) 한국환경생태학회 2012 한국환경생태학회지 Vol.26 No.4

경주국립공원 문화재지정구역에 분포하는 귀화식물은 총 14과 40속 45종 1변종 등 총 46분류군을 확인하였다. 귀화식물을 유형별로 구별해보면, 생활형은 1년생 초본이 17분류군(37%)으로 가장 많았으며, 다년생 초본이 16분류군 (34.8%), 2년생 초본이 11분류군(23.9%), 목본이 2분류군(4.3%)로 나타났다. 원산지 별로는 유럽이 17분류군(37%)으로 가장 많았으며, 그 다음으로 북아메리카에서 이입된 종이 16분류군(34.8%)으로 나타났다. 또한 귀화도는 3등급이 18분류군(40.9%)으로 가장 높다. 귀화식물 321분류군에 대한 본 연구대상지의 도시화 지수는 14.3%이며, 지구별 도시화 지수는 남산지구가 8.1%로 가장 높다. 경주국립공원은 사적형 공원으로 문화재가 매우 중요하나, 문화재 주변의식재 및 관리 또한 중요하다. 따라서 귀화식물의 경우 장기적인 모니터링과 생태적인 특성을 파악하여 체계적인 관리방안이 요구된다. The naturalized plant species in Gyeongju National Park was summarized as 46taxa including 14 families 40 genus 45 species 1 varieties. Among them, annual herbaceous species was 17taxa (37%) which is grouped as the biggest proportion and 16taxa (34.8%) for perennial herbaceous species and 11taxa (23.9%) for biannual herbaceous species and 2taxa (4.3%) for tree species. European origin was the biggest proportion as 17taxa (37%), and 16% (34.8%) from North America. The degree of naturalization (DoN) was the biggest for Degree III, V as 18taxa (39.1%). Regarding 321 naturalized plant species, the Urbanization Index in the studied area was 14.3%. The Namsam District showed 8.1% which is the highest DoN in the studied districts within the Gyeongju National Park. As the cultural properties is important in the Gyeongju National Park as a representatives for historical sites in Korea, planting and its management in the cultural properties is important tasks. The naturalized plant species in the studied area should be reasonably management.

구강 내 디지털 인상채득을 통한 맞춤형 지대주와 시멘트 합착 후 나사형 임플란트 보철 수복 증례

홍용신,박은진,김선종,김명래,허성주,박지만 대한치과보철학회 2012 대한치과보철학회지 Vol.50 No.1

최근 디지털 인상채득 시스템이 개발되면서 이를 기존의 CAD/CAM 시스템과 접목한 인레이, 온레이, 크라운이나 간단한 계속가공의치 등의 고정성 보철물의 제작이 활발히 소개되고 있다. 그러나 임플란트 보철에서는 주로 기존의 아날로그식 인상채득 후 이를 스캔하여 제작하는 방법이 사용되어 왔으나, 구강 내 디지털 스캔한 데이터를 이용하여 나사형 보철물을 제작하는 술식은 아직 활발히 이루어지지 않았다. 이에 본 증례보고에서는 6명의 환자를 대상으로 구강 내 스캐너인 iTero를 사용하여 디지털 스캔을 시행한 후 그중 다섯명은 맞춤형 지대주와 시멘트 합착 후 나사형 임플란트 보철물(screw-retained implant prosthesis after cementation, or SCRP)을 제작하였고, 임상적으로 기능과 심미적인 측면으로 만족할 만한 결과를 얻었기에 이를 보고하고자 한다. Fixed dental prostheses such as inlay, onlay, crown, and bridge fabricated by CAD/CAM technique combined with digital impressions is getting popular due to the recent rapid progress of digital impression taking system. For the scope of implant prosthesis, however, digital intra-oral scan hasn’t been actively utilized for the fabrication of superstructures. In this case report, 6 cases of titanium-milled custom abutment based on the iTero intra-oral scan data were introduced, five of them were restored with screw-type prosthesis after cementation (SCRP) and the clinical results were satisfactory on restoring the function and esthetics.

Life Cycle Cost 분석에 의한 호텔건물 규모별 열원공급방식의 비교 분석

朴敏用,金明鎭 동아대학교 건설기술연구소 1996 硏究報告 Vol.20 No.1

Equipment system selection should be a compromise between performance and economics. Factors to consider are the user's requirements, the designer's experience. local building codes, initial cost, energy efficiency and projected operating costs. Any of these factors can alter the choice. Because HVAC(Heating, Ventilating, and Air-Conditioning) equipment systems of hotel. which is consuming a large amount of energy as hotel recently being large and luxurious in scale and quality, has been operated all year long, the diversity of use for all areas of hotels makes heating and cooling load profile researches the key to minimum selection requirments, advoidance of unnecessary oversizing and duplication, and low operating cost design. Therefore, this study is aimed at proposing an economic fuel-source equipment system of deluxe hotel scale which are hypothectical buildings(total area : 25,000㎡, 50,000㎡, 75,000㎡)used 4 HVAC equipment alternatives by Life Cycle Costing, including initial costs, service life, interest, energy costs, taxes, operating expenses, depreciation, inflation and cost escalation. interest, energy costs, taxes, operating expenses, depreciation, inflation and cost escalation.

항생제 대체제(앤타시드-100)의 급여가 젖소 송아지 육성에 미친 영향

명윤아,박덕섭,이인덕,남명수,이형석,김용국 충남대학교 농업과학연구소 2007 농업과학연구 Vol.34 No.2

This study was carried out to develope an antibiotic substitute with some feed additive ingredients; activated charcoal, microbial products( Saccharomyces cerevisiae), sodium bentonite and pyroligneous. Sixty Holstein male calves(control 30 and tested 30 calves) were assigned to one of two diets, control(containing commercial antibiotic) and treatment diet (containing antibiotic substitute) with three replicates(10 calves each). The experiment were carried out for 30 days. The daily weight gains were similar between control(1.01kg/d) and treatment groups(1.01kg/d), however feed requirement were lower for treatment calves (2.80kg) than control calves (3.24kg) (P<0.05). Also calves were more health for treatment calves than control calves for diarrhea and respiratory diseases occurrences. The ammonia concentration of feces were lower for treatment calves(2.67 ppm) than for control calves(6.33 ppm) (P<0.05). No statistical difference were found in blood substances between control and treatment calves(P>0.05). In conclusion, the calve performances were improved by substitute without commercial antibiotic additive. 본 연구는 항생제를 대체할 목적으로 동물체의 활성을 가져오는 원료로 알려져 있는 활성탄과 목초액, sodium bentonite, 홍삼박, 생균제를 선별하여 이들 원료로 구성된 항생물질 대체제를 개발하여 홀스타인 수송아지에 급여하였을 때 생산성에 미치는 효과를 규명하고자 수행하였다. 송아지의 일당증체량은 대조구(1.011kg), 처리구(l.0lkg)간에 유의적인 차이가 없었고(P>0.05), 사료 요구율은 대조구 3.24에 비하여 처리구 2.80로 처리구에서 유의적인 개선효과를 나타냈다(P<0.05). 설사 발생률은 동일하였으나 분 상태는 처리구가 양호하였고, 호흡기 질병은 처리구에서는 발생하지 않았다. 분 중 NH₃ 농도는 대조구(6.33 ppm)에 비하여 처리구(2.67 ppm)에서 뚜렷한 개선 효과를 보였고(P<0.05), 혈액 수치는 대조구와 처리구가 유사하였다. 항생물질 대체제를 급여한 처리구가 시판 항생제 첨가사료급여군(대조구)에 비하여 증체에서는 다소 낮은 성적을 나타냈지만 질병 발생 없이 유사한 성적을 낸 것은 대체물질이 가축 소화기관의 활성화, 사료의 소화율 증진 등에 영향을 나타내어 동물의 활력이 증진되므로 항생제의 사용 없이도 양질의 축산물을 생산할 수 있는 결과를 얻었다.

산화제이철 및 칼슘페라아트 이온 선택성 막전극

박면용,이명재,조동희,원충택 建國大學校基礎科學硏究所 1992 理學論集 Vol.17 No.-

The ion-selective electrode based on ferric oxide and calcium ferric have been studied to ionic sensitivities, selectivities and response behaviors in aqueous solution. The membrane selectrode of ferric oxide was prepared by using α-ferric hydroxide from ferric nitrate solution at pH 4.5∼6.0 . The membrane were sintered at 1,200℃ and 1,350℃. Calcium ferrite was prepared by mixing ferric oxide with calcium oxide on molar ratio of 0.8 : 0.2 and the selectrode membrane based on calcium ferrite was sintered at 1,100℃ Membrane seletrode of ferric oxide was responded without any selectivity to Ag? Ni?, Ca?, Bi?, Ci?, HCO₃?, CIO₄? and NO₃? ion. Membrane seletrode of calcium ferric responded except sensitivity to Ag?, Be?, Cu?, Cr?, Bi?, HCO₃?, CO??, and S??, but their sensitivities were agreed with Nernstain solpe. The selectrode of calcium ferrite was shown reproducible potential response to ions in the solution for six months

디지탈 영상처리를 위한 데이타 취득 시스템에 관한 연구

박규태,진용옥,김장복,박명구,신태민,김한주 연세대학교 산업기술연구소 1983 논문집 Vol.15 No.2

A computer vision system for recognition and processing any visible objects is designed. Analog video images are digitized and stored in the internal memory of a microcomputer system and these digitized data are output through a bit-image printer. The kirsch edge operator is used for the processing. In order to compare the result of Kirsch edge enhancement, two images "a Man" and "a figure" are tested. Because of the limitations of the speed of A/D converter and the capacity of internal memory, the operation of the system is a still-picture mode. Upper 4 bit date of the memory are used for printing out the image, so as to the gray levels are sixteen. The output size of the bit-image printer is 120x120, and 2 horizontal lines are printed simultaneously per 1 carriage return because the printer has a 8 pin head. The system is designed to have compatibility with any microcomputer system which has a S-100 bus structure.

Sodium molybate가 납중독 랫드의 말초신경내 myo-inositol 인지질 대사 관련 효소에 미치는 영향

박성환,정명규,조해용,최창하,김명녀 대한위생학회 2001 대한환경위생공학회지 Vol.16 No.4

We have previously demonstrated that sodium molybdate(Mo) improved lead-intoxicated status by enhancing the metabolism of myo-inositol-related phospholipids in sciatic nerves isolated from rats. In this study, in order to address the reduction mechanism of Mo for lead toxicity, effects of Mo on cystidine-diglyceride transferase, phosphatidylinositol kinase, and phosphatidyl inositol-4-phosphate kinase, involved in myo-inositol metabolism of nerve, were investigated in vivo and in vitro. Mo significantly increased the activities of cystidinediglyceride transferase and phosphatidylinositol kinase in lead-intoxicated rat, and the pattern of increase was dose-dependent manner. However, Mo did not affect the activity of phosphatidylinositiol-4-phosphate kinase in normal and lead-intoxicated rats. We also found that Mo affected the activities of phopholipid metabolism-related enzymes not by the indirect manner such as activation of another metabolic pathway but by the direct manner. These results suggest that the improvement mechanism of Mo for lead-intoxicated status might be a normalization of the activities of phospholipid metabolism-related enzymes in sciatic nerve.

유연생산 시스템 구축을 위한 공작물 자동교환 유닛 설계

박후명,이용중,이상진,하만경 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

The objective of this study is to develop an automatic object changer unit to improve processing problems existed in the conventional horizontal machining center. In order to perform this objective, a upward and downward traverse unit in which a unit that consists of a motor and reducer, chain and sprocket wheel, and upper and lower base employed in an automatic object changer unit performs sliding contact motion in a frame was designed. To achieve this design, constraint conditions for the upward and downward traverse unit first designed. Then, an operation mechanism was designed and that was introduced as a sum of kinetic energy for the sprocket wheel and upper and lower base based on the moment of inertia, which is the kinetic energy of the converted upward and downward traverse unit in the side of the reducer. In addition, The work required to rotate the converted upward and downward traverse unit in the side of the reducer by one revolution can be calculated using the sum of work that is required in the sprocket wheel and upper and lower base that is a part of the upward and downward traverse unit. Furthermore, the converted equation of motion in the side of the motor can be introduced using the equation of motion using the converted upward and downward traverse unit in the side of the motor. Then, Then, a proper motor can be determined using predetermined specifications employed in the motor and several parameters in the upward and downward traverse unit in order to verify such predetermined specifications. Also, a design of a horizontal traverse unit that performs sliding motion on a upward and downward traverse unit and simulation that verifies the results of this design are required as a future study.

Park's Vector Pattern의 왜곡률 분석에 의한 BLDC 모터의 권선 고장진단

이대성(Dae-Seong Lee),김준영(Jun-Yong Kim),양철오(Chul-Oh Yang),송명현(Myung-Hyun Song),박규남(Song, Kyu-Nam Park) 대한전기학회 2013 대한전기학회 학술대회 논문집 Vol.2013 No.7

여성결혼이민자의 사회적 관계가 생활만족에 미치는 영향에 관한 연구

박미정,엄명용 한국가족관계학회 2009 한국가족관계학회지 Vol.14 No.2

This study aimed at investigating the effects of social relations, both negative and positive function, on the life satisfaction of female marriage immigrants to South Korea. A convenience sample of 250 women was selected from marriage immigrants who were living in rural area of Southern part of South Korea. The function of the social relationships were measured in two dimensions: social support and negative interaction. The system of social relationships includes family, neighborhood, friends from the same country, self help group, and social service workers. The regression analysis of 202 subjects showed that among other social support variables both the information support from family and the emotional support from social service workers were statistically significant. Surprisingly the negative function of the relationship with friends from the same country turned out to have positive effects on the life satisfaction. The negative function of the relationship both with social service workers and with neighbors turned out to have negative effects on the life satisfaction. Policy and practice implications were presented.