• Journal of Microbiology and Biotechnology
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• 제15권6호
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• pp.1392-1396
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• 2005

Proteolytic digestion and CD measurement of wild-type and mutant cyclic AMP receptor proteins (CRPs) were performed either in the presence or absence of cyclic nucleotide. Results indicated that transition of a structural change to the hinge region by the binding of cAMP to the anti site was required for the binding of cAMP to the syn site near the hinge region and, although the occupancy of cAMP in the anti site increased the protein stability, CRP adopted more a stable conformation by the binding of cAMP to the syn site.

• 대한세포병리학회지
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• 제4권2호
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• pp.150-155
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• 1993

We report a case of placental site trophoblastic tumor with cytologic features of cervico-vaginal smear. The smear revealed several loose clusters of atypicai cells in slightly hemorrhagic and inflammatory background. Tumor cells were large in size and polyhedral to round with abundant cytoplasm Nuclei revealed consider-able variation in size, shape, and degree of chromatin clumping. Cytologically, it was difficult to differentiate from squamous cell carcinoma of uterine cervix. Curettage and hysterectomy specimen revealed typical histologic features of placental site trophoblastic tumor composed of intermediate type trophoblasts.

• 한국환경과학회지
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• 제23권12호
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• pp.2083-2087
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• 2014

Between May and September 2014, a total of 226 serotine bats (Eptesicus serotinus) were captured and subsequently released at a site 50 km distant from the site of capture, in order to determine the homing ability of the bats and changes in the homing rate according to the season. The bats were captured from a nursery colony at a bridge in An-dong (Gyeongbuk, Korea), and then released at a similar site in Yeong-Ju (Gyeongbuk, Korea). We found that 115 of the 226 bats released (51%) returned to the capture site. However, there was a difference in the homing ability of the serotine bats depending on the season and reproductive status. We found that the homing rate was the highest in June during late pregnancy and the lowest in August after the lactation period.

• 자원ㆍ환경경제연구
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• 제10권1호
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• pp.1-23
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• 2001

This paper reviews a single trip decision to visit individual sites of a natural park within a random utility framework as an alternative to travel cost model. The model is applied to a 1998 survey of on-site visitors to Mu Deung Mt. neighboring Kwang Ju. city. Out of four sites considered, the model seemed to provide a reasonable description of behavior for three sites. In addition to travel costs as an implicit price, variables reflecting characteristics of each site also influenced decisions to visit the site. Moreover, benefits estimates derived from the RUM implied that visitors placed three times higher values on a site based on cultural inheritance compared with those of two recreational sites.

• 한국환경생태학회지
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• 제14권2호
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• pp.103-110
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• 2000

본 연구는 1994년 4월에서 8월까지의 기간 동안 지리산국립공원내 임걸령 지역과 노고단 지역에서 등산로가 개설되어 있는 지역과 개설되어 있지 않은 지역을 대상으로 등산로가 번식기 조류 군집에 미치는 영향을 파악함으로써 등산로의 합리적인 관리방안을 모색하고가 실시하였다. 조사지역별 서식지 환경은 노고단 등산로 지역과 노고단 지역이 유사하였으며 임걸령 등산로 지역과 임걸령 지역이 각각 유사하였다. 4개 지역에서 조사를 실시 한 결과 총 25종의 조류가 관찰되었으며. 그 중 18종이 번식한 것으로 파악되었다. 번식기 조류 군집의 종 수 및 번식 쌍수와 길드구조에 있어서 산림 지역과 등산로 지역간에 큰 차이를 보이지 않아, 등산로가 조류 군집에 미치는 영향은 크지 않았던 것으로 판단된다. 이는 등산로의 상층식생이 울폐되어 상층수관이 연결되어 있었으며, 등산로 주변에 하층식생이 발달해 있는 지역이므로 조류 군집에 큰 영향을 주지 않았던 것으로 보여진다. 그러므로 등산로의 개설 혹은 현재 등산로의 유지 및 관리를 위해서 등산로 주변의 수관 울페율을 높게 유지할 수 있도록 등산로 주변의 대경목 및 상층임관이 보호 및 관리되도록 해야 하고, 또한 주변의 식생, 특히 관목층 및 하층식생의 보호 및 유지가 할 것으로 판단된다.

• 한국정보통신학회논문지
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• 제20권9호
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• pp.1696-1703
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• 2016

본 논문에서는 현재 해양수산부에서 운영 중인 NDGPS 기준국을 SBAS 기준국으로 공동 활용하기 위한 목적으로 사이트 환경 관점에서의 타당성을 확인한다. 이를 위하여 SBAS 기준국의 사이트 환경 요구사항을 도출하고, 본 요구사항을 확인할 수 있는 절차를 수립한다. 그리고 수립된 기준국 사이트 환경 조사 절차를 기반으로 NDGPS 기준국의 현장 조사를 실시하고 그 결과를 분석한다. 이때, 사이트 환경 조사를 위한 사이트 선정은 NDGPS 기준국 17개소를 대상으로 한다. 본 논문의 내용은 NDGPS 기준국을 SBAS 기준국으로 공동 활용하기 위하여 고려해야 할 요소도출 및 위성항법시스템 분야의 기준국 선정 및 구축 시 활용할 수 있다.

• Nuclear Engineering and Technology
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• 제38권6호
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• pp.575-584
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• 2006

As the development of total management systems for sites along with site environmental information is becoming standard, the system known as the Site Information and Total Environmental database management System (SITES) has been developed over the last two years. The first result was a database management system for storing data obtained from facilities, and a site characterization in addition to an environmental assessment of a site. The SITES database is designed to be effective and practical for use with facility management and safety assessment in relation to Geographic Information Systems. SITES is a total management program, which includes its database, its data analysis system required for site characterization, a safety assessment modeling system and an environment monitoring system. It can contribute to the institutional management of the facility and to its safety reassessment. SITES is composed of two main modules: the SITES Database module (SDM) and the Monitoring & Assessment (M&A) module [1]. The M&A module is subdivided into two sub-modules: the Safety Assessment System (SAS) and the Site Environmental Monitoring System (SEMS). SAS controls the data (input and output) from the SITES DB for the site safety assessment, whereas SEMS controls the data obtained from the records of the measuring sensors and facilities. The on-line site and environmental monitoring data is managed in SEMS. The present paper introduces the procedure and function of the M&A modules.

• 한국조경학회지
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• 제22권1호
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• pp.149-177
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• 1994

This study is practically focussed on the derivation of the formula of the reach of the catchment of urban community parks and the reached distance to the parks. The hypotheses for the formula are as follows. a. The catchment of urban community parks can be dependent on the quantitative characteristics that urban community parks have substanial factors : the potential residential population of the proximate community to a park, park visitor's day and mean usetime per year. b. The distance to the urban park is a decided variable which can be percieved quantitatively by the researchers among the exogenous variables concerned with the mean usetime of the urban community park. The data for the variables were collected from the statistics, and the surveys for 9 parks of 4cities(Seoul, Chong-ju, Su-Won, Chon-an) in Korea, which were divided into on-site samples and off-site ones in 1991. The data were collected by questionaire surveys. A total of 548 questionaires of off-site surveys were completed by the residents in the enticing area of the parks. A total of 1053 questionaires of on-site surveys were completed by the visitors of the parks. The research could attempt to derive a formula, which was concerned with the reach of the catchment of urban community parks and the reached distance to the parks. It is testified(R2>0.8) that the numbers of mean usetime per year should be related with the reached distance from a visitor's house to a proximate park. The formula is analogized with an exponential function: {{{{ Mean Usetime per year=f(x)=Ae-BK+Ce-DK ear, X is reached distance from a visitor's house to a proximate park. A,B,C and D are parameters. And, the differences of the reach of the catchment of the parks are not only testified with resulting from the differences of the exogenous variables of qualitative characteristics differences of the parks, but also divided separately into spatial ranges. This formula will be able to anticipate the visitor's numbers of a planned urban community park.

• 한국산학기술학회논문지
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• 제15권6호
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• pp.3997-4001
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• 2014

본 연구는 경북지역에 산재한 사용종료 비위생 매립 부지의 특성을 토대로 효율적인 부지 활용 방안 제시를 목적으로 하였다. 연구 대상 매립 부지의 활용성에 영향을 주는 인자를 선정하여 매립 부지의 유형을 분류함으로써 체계적인 활용방안 선택의 기초 자료를 제공하였다. 매립 부지의 활용 인자로는 부지의 면적, 도로 이격 거리, 마을 이격 거리를 분석하였으며 통계 분석을 통하여 대상 매립 부지의 유형을 결정짓는 주요 인자는 부지의 면적임을 알 수 있었다. 이러한 결과를 토대로 매립 부지의 특성에 알맞은 활용 방안 결정 지침을 제시하였다.

• Journal of Periodontal and Implant Science
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• 제32권2호
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• pp.291-302
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• 2002

In most of the previous studies, invasive and discrete techniques have been used to monitor the healing process of the gingival graft. However, Laser Doppler Flowmetry(LDF, floLAB(R), Moor Instruments Ltd., England) is a non-invasive technique for measurement of blood flow in the tissue and also allows continuous monitoring. Thus, we tested the usefulness of LDF in monitoring the healing process of free gingival graft at gingival recession. Eleven gingival graft site of 7 patients, including 5 males and 2 females, aged between 21 and 41 years (mean age 28.5) were monitored for the blood flow. The blood flow in gingival graft at coronal site, central site, apical site, mesial site and distal site was measured using LDF. Blood flow was measured at 1- week, 2- week, 3- week and 4- week after gingival graft surgery from 10 a.m. to 2 p.m. Time-course of the healing process was evaluated by statistical analysis using repeated ANOVA and Duncan test. The results were as follows : (1) Blood flow stayed increased for 2 weeks, and then, it was a tendency to decrease. (2) The blood flow at distal site had always higher than mesial site during the measuring periods. (3) The blood flow was high orderly after 1 week ; most coronal site, most apical site, central site. But that was high orderly after 2 week, 3 week, 4 week ; most coronal site, central site, most apical site. In conclusion, LDF was a useful and clinically adaptable method to monitor wound healing process. Our study suggested that it was important to protect surgical site to promote initial wound healing.