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철원 비무장지대 인근지역에서 두루미류의 월동생태 및 서식지 관리
이우신,임신재,허위행,최창용,최서윤,박용수,이창배 中央大學校 食糧資源硏究所 2003 食糧資源硏究所 論文集 Vol.15 No.1
This study was conducted to investigate wintering ecology and habitat using pattern of cranes for sound protection and management of the birds and their habitat near the Demilitarized Zone(DMZ) of Cheolwon, South Korea. Distribution of cranes seemed to be affected by road construction and human activity. Dried rice paddy was mainly habitat type of cranes in Cheolwon area. Gleaning was dominant behavior during day time. Ratio of alert was increased in afternoon. There was difference in time budget of behavior between red-crowned and white-naped cranes. For the stable wintering of cranes, minimum change of habitat, decrease of human disturbance and stable food maintenance would be needed in Cheolwon area.
윤정섭,이상헌,신극선,이훈범 대한성형외과학회 1992 Archives of Plastic Surgery Vol.19 No.3
Post radical mastectomy reconstruction using a transverse rectus abdominis myocutaneous flap involves certain problems at the donor site as the difficulty in closure secondary to excessive tension and the development of a postsurgical abdominal hernia. The usage of alloplastic materials such as Marlex may also cause eventual weakness as well as a foreign body reaction. While autogenous tissues may be used for a remote myocutaneous flap transposition or a free-tissue transfer, the problems such as a donor site defect, atrophy secondary to denervation, etc. exist. To avert these problems, we propose to use the autogenous tissue in a manner that provides a dynamic support in addition to the functional reconstruction. The components separation method decribed here separates the muscle groups of the abdominal wall, and allows several advantages over treating the abdominal wall as a single unit. One of the advantages is the increased mobility of individual muscles. The allows transferance of the flap over a greater distance which in turn reduces excessive tension and makes closure of the donor site defect easier. Thus, this procedure provides a dynamic support and reduces the incidence of hernia. We experienced 3 cases of abdominal wall reconstruction after TRAM flap transfer(one case after bilateral TRAM flap, two cases after contralateral unilateral TRAM flap) using external oblique muscle sharing or rectus sharing. So we present clinical cases of the abdominal wall reconstruction after TRAM flap transfer with a review of the literature.
Differences in Field Sign Abundance of Mammal Species Around the Roads in Baekdudaegan Mountains
Hur, Wee-Haeng,Lee, Woo-Shin,Choi, Chang-Yong,Park, Young-Su,Lee, Chang-Bae,Rhim, Shin-Jae 한국임학회 2005 한국산림과학회지 Vol.94 No.2
This study was conducted to obtain the information of distribution, protection and management for mammal species in fragmented forest areas around the road from June 2002 to May 2003 in 9 study sites of Baekdugdaegan mountains, Korea. Field signs of twelve mammals, moles Miolera robusta, Korean hares Lepus coreanus, Manchurian chipmunk Tam ias sibiricus, red squirrels Sciurus vuigaris, Korean racoon dogs N yeiereutes procyonoides, Siberian weasels Mustela sibirica, badgers Meles meles, otters Lutra lama, Bengal cats Fells bengalensis, wild boars Sus scrofa, water deer Flvdropotes inerrnis and roe deer Capreolus pygargus were recorded in this study. There were no differences in total number of species between 50 in areas and 50-100 m areas from road in snow and non-snow season. Number of mammals' field signs were different in non-snow season between both areas. Red squirrels and Siberian weasels were more abundant in 50 m areas, and Korean hares and Manchurian chipmunks were in 50-100 in areas. Habitat using pattern of mammal species may be affected by the road. Reasonable road construction and maintenance would be needed for protection and management of wildlife and their habitats.
Hur, Wee-Haeng,Park, Young-Su,Lee, Woo-Shin,Choi, Chang-Young,Lee, Eun-Jae,Rhim, Shin-Jae 한국임학회 2005 한국산림과학회지 Vol.94 No.2
This study was conducted to estimate population size and investigate habitat characteristics for the conservation and management of Amur goral Nemorhaedus caudatus raddeanus in DMZ (Demilitarized Zone) of Gangwon Province in South Korea from November 2003 to May 2004. The Amur gorals counting were carried out by assistance of military soldiers who guards the southern boundary of DMZ. Four hundred sixty individuals were estimated as total population size in DMZ of Gangwon Province. Deciduous forest, rocky area and coniferous forest were dominant land cover types in habitat of Amur goral. DMZ and its vicinity of Gangwon Province are very important areas for the conservation of this species. It is needed to establish management plan for the conservation of Amur goral and their habitats in DMZ.
Protective effects of compound B1 on liver injury in alcohol-fed rats
Shin, Sanghee,Yang, Keum-Jin,Piao, Longzhen,Shin, Eulsoon,Li, Yuwen,Park, Kyeong Ah,Byun, Hee Sun,Won, Minho,Kim, Young-Rae,Lee, Hyunji,Hur, Gang Min,Seok, Jeong Ho,Kim, Jin Man,Song Minho,Park, Jongs 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10
Effects of Melittin on Oxidative Stress Mediated Induction of Apoptosis in Prostate Cancer Cell
Shin, Eulsoon,Yang, Keum Jin,Piao, Longzhen,Shin, Sanghee,Li, Yuwen,Kim, Young-Rae,Byun, Hee Sun,Won, Minho,Park, Kyung Ah,Lee, Hyunji,Choi, Byung Lyul,Hong, Jang Hee,Hur, Gangmin,Seok, Jeong Ho,Park, 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10
Melittin, a Amphipathic Cationic Peptide that Causes ROS-Mediated Apoptosis in Prostate Cancer Cell
Shin, Eulsoon,Yang, Keum-Jin,Piao, Longzhen,Shin, Sanghee,Li, Yuwen,Kim, Young-Rae,Byun, Hee Sun,Won, Minho,Park, Kyung Ah,Lee, Hyunji,Choi, Byung Lyul,Hong, Jang Hee,Hur, Gangmin,Seok, Jeong Ho,Park, 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10
Shin Hyunjae,Lee Ha Seok,Noh Ji Yun,고준영,Kim So-Young,Park Jeayeon,Chung Sung Won,Hur Moon Haeng,Park Min Kyung,Lee Yun Bin,Kim Yoon Jun,Yoon Jung-Hwan,Ko Jae-Hoon,Peck Kyong Ran,Song Joon Young,Shin E 대한면역학회 2023 Immune Network Vol.23 No.5
Coronavirus disease 2019 (COVID-19) vaccination may non-specifically alter the host immune system. This study aimed to evaluate the effect of COVID-19 vaccination on hepatitis B surface Ag (HBsAg) titer and host immunity in chronic hepatitis B (CHB) patients. Consecutive 2,797 CHB patients who had serial HBsAg measurements during antiviral treatment were included in this study. Changes in the HBsAg levels after COVID-19 vaccination were analyzed. The dynamics of NK cells following COVID-19 vaccination were also examined using serial blood samples collected prospectively from 25 healthy volunteers. Vaccinated CHB patients (n=2,329) had significantly lower HBsAg levels 1–30 days post-vaccination compared to baseline (median, −21.4 IU/ml from baseline), but the levels reverted to baseline by 91–180 days (median, −3.8 IU/ml). The velocity of the HBsAg decline was transiently accelerated within 30 days after vaccination (median velocity: −0.06, −0.39, and −0.04 log10 IU/ml/year in pre-vaccination period, days 1–30, and days 31–90, respectively). In contrast, unvaccinated patients (n=468) had no change in HBsAg levels. Flow cytometric analysis showed that the frequency of NK cells expressing NKG2A, an NK inhibitory receptor, significantly decreased within 7 days after the first dose of COVID-19 vaccine (median, −13.1% from baseline; p<0.001). The decrease in the frequency of NKG2A+ NK cells was observed in the CD56dimCD16+ NK cell population regardless of type of COVID-19 vaccine. COVID-19 vaccination leads to a rapid, transient decline in HBsAg titer and a decrease in the frequency of NKG2A+ NK cells.
Hur, Wee-Haeng,Lee, Woo-Shin,Choi, Chang-Yong,Park, Young-Su,Lee, Chang-Bae,Rhim, Shin-Jae 한국임학회 2005 한국산림과학회지 Vol.94 No.2
This study was conducted to identify the road effect on small rodent populations within fragmented forest areas around the road from June to September 2002, in 9 study sites of Baekdugdaegan mountains, Korea. Two species of small rodents, Korean field mouse Apodemus peninsulae and striped field mouse Apodemus agrarius, were captured in this study. Korean field mouse preferred forest area, and striped field mouse generally has been found edge area around road. Mean body weight of Korean field mouse was significantly different, but that of striped field mouse was not between both distance from road. Korean field mouse is forest-dwelling species and their distribution is limited in forest area. In contrast, striped field mouse has wide distributional range around road. The effects of road is different in each small rodent species and their habitat preferences.
Elastomers and Composites : Simulation and Experiment of Elastomer Seal for Pneumatic Servo Cylinder
( Shin Hur ),( Kyung Jun Song ),( Chang Su Woo ) 한국고무학회 2015 엘라스토머 및 콤포지트 Vol.50 No.4
The rubber seal is a part inserted into servo cylinder to keep the air pressure constant. In order for efficient movements of the servo cylinder, the frictional coefficient of the rubber seal needs to be minimized while the sealing is maintained. In this work the friction characteristics of rubber seal specimen are tested on metal plate at various conditions. The experimental conditions include roughness level, applied pressure, lubrication, and rubbing speed. The design of experiment approach is taken to assess the effect of each parameter. The nonlinear frictional response of the rubber is applied to the FEM model simulating the servo cylinder movement. The result demonstrates that precise optimization of the servo cylinder movement must be preceded by preliminary experiments coupled with the theory and FEM model.