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조현만(Hyun-Man Cho),김서현(Seo-Hyun Kim),류연선(Yeon-Sun Ryu),김정태(Jung-Tae Kim) 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.5
This study presents the results of collision analyses of burial cable protector under anchor collision. For the analyses, burial environment such as collision distance, the type cf soils and burial depth was estimated. Dynamic finite element program, ANSYS WB Explicit STR was used to collision analyses of burial cable protector. This study focuses on two parameters that are considered two of the fundamental items for the design: the type of soils and burial depth. The purpose of this work is to present fundamental design criteria of burial cable protector.
오미자약침액(五味子藥鍼液)의 NO, DPPH 소거(消去) 및 IL-4에 대한 억제효과(抑制效果)
조현열 ( Hyun Yeul Cho ),윤종석 ( Jong Seok Yoon ),서보명 ( Bo Myung Seo ),이세연 ( Sea Youn Lee ),김성웅 ( Sung Woong Kim ),백정한 ( Jung Han Baek ),박치상 ( Chi Sang Park ),서정철 ( Jeong Chul Seo ),한상원 ( Sang Won Han ) 대한경락경혈학회 2004 Korean Journal of Acupuncture Vol.20 No.1
Backgrounds: It has been investigated about ageing theory. However, ageing mechanism still remains to be unknown. Since Harman proposes that ageing and ageing related diseases might be due to oxidative damage and these are modifiable by genetic and environmental factors. For designing an optimal nutritional countermeasure against ageing and ageing related disease, it is necessary to understand the ageing mechanism and other reactive species. Objectives: Schizandra Chinesis has been clinically used to treat brain disease, respiratory or inflammatory disease etc. in Oriental medicine. The purpose of this study is to investigate the scavenging effect of Schizandrae Fructus herbal-acupuncture solution(SFHA) on NO, DPPH and IL-4. Results: The results are summarized as follows; ① There is a significant scavenging effect of SFHA on NO in 0.1, 1, 10㎎/㎖group after 24hrs. ② There is a significant scavenging effect of SFHA on DPPH in 1, 10㎍/㎖group. ③ There is a significant inhibitory effect of SFHA on IL-4 in 1, 10, 100㎍/㎖group. Conclusions: These findings indicate that SFHA can be used as antioxidant or antiimflammatory drug. But further study is needed about the effect of SFHA.
조현서 ( Cho Hyun Seo ),지우람 ( Ji Woo Ram ),이건철 ( Lee Gun Cheol ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2
In this study, the bond strength of FRP reinforced inorganic adhesive developed in previous studies was exposed to high temperature. As a result of the experiment, it was confirmed that the bond strength was increased at room temperature in the range of 100 to 200 ° C, but the width gradually decreased with increasing temperature.
백두대간 한의령에서 댓재구간 마루금의 식물군집구조 특성
조현서 ( Hyun Seo Cho ),이수동 ( Soo Dong Lee ) 한국환경생태학회 2013 한국환경생태학회지 Vol.27 No.6
연구는 백두대간 중 한의령에서 댓재구간 마루금에 분포하는 식생에 대하여 출현종, 천이경향 등에 대한 기초자료를 제시하고자 10m×10m(100㎡) 조사구 46개소를 설치하였다. TWINSPAN에 의한 군집분류 결과 소나무-신갈나무-물푸레나무군락, 소나무-신갈나무군락, 느릅나무군락, 신갈나무-낙엽활엽수군락, 신갈나무군락, 신갈나무-물박달나무군락, 신갈나무-쇠물푸레나무군락, 일본잎갈나무군락 등 8개로 유형화되었다. 천이경향을 살펴보면, 소나무우점군락은 외부의 인위적인 교란이 없다면 신갈나무우점군락으로 발전하겠으나 느릅나무군락은 경쟁종이 없어 현상태를 유지하겠다. 신갈나무우점군락은 신갈나무와의 경쟁종이 없는 경우에는 노령임분으로 발전할 가능성이 있으나 지형적인 조건으로 물푸레나무, 물박달나무 등 교목성상의 경쟁종이 출현할 경우에는 낙엽활엽수군락으로의 천이도 가능한 것으로 판단되었다. 단위면적당(400㎡) 종다양도지수는 소나무 등 천이진행 군락이 1.0477∼1.1283, 신갈나무우점군락 등 천이 진행이 안정상태인 군락이 0.6446∼0.9424로 낮았다. This study was launched in order to collect basic data such as emergent species, a succession trend based on the actual vegetation at the ridge from Haneoryoung to Daetjae, thereby designating 46 quadrats(10 m × 10 m: 100 ㎡). As a result of classification by TWINSPAN, the plant community was categorized into eight different communities, such as Pinus densiflora-Quercus mongolica-Fraxinus rhynchophylla, P. densiflora-Q. mongolica, Ulmus davidiana var. japonica, Q. mongolica-Deciduous Broad-leaved, Q. mongolica, Q. mongolica-Betula davurica, Q. mongolica-F. sieboldiana, and Larix kaempferi. An analyzation of each communities indicated that P. densiflora dominant community will change into a Q. mongolica dominant community if there are no outside artificial disturbances. U. davidiana var. japonica community maintains its present condition, because it doesn`t appear to be a competitive species. In the case of Q. mongolica dominant community, if nothing comes in a competitive species against Q. monglica, it is possible to succeed to a muture stand. These communities with competitive species such as F. rhynchophylla, B. davurica that do not emerge at a canopy layer will gradually progress to the Deciduous Broad-leaved community. With regard to the species diversity index per unit (400 ㎡), succession processing communities (P. densiflora: 1.0477∼1.1283) tend to be higher than succession-processed communities (Q. mongolica dominant: 0.6446∼0.9424).
조현서 ( Hyun Seo Cho ),이수동 ( Soo Dong Lee ),김미정 ( Mi Jeong Kim ) 한국환경생태학회 2012 한국환경생태학회지 Vol.26 No.5
낙동정맥 절구골의 식생구조를 파악하고자 계곡부 약 3km 구간을 대상으로 10m×10m(100㎡) 조사구 29개소를 설치하여 식물군집구조 조사를 실시하였다. TWINSPAN classification에 의한 군락 분류 결과 소나무군락, 낙엽활엽수군락, 굴참나무군락, 신갈나무군락, 일본잎갈나무군락 5개 유형으로 분류되었다. 계곡부와 북사면에는 습윤지성 낙엽활엽수와 참나무류가 주로 분포하였고 일본잎갈나무군락은 당분간 현상태를 유지하겠으나 하층의 들메나무, 산뽕나무, 고로쇠나무 등 낙엽성 활엽수의 세력이 우세해지고 있어 장차 이들 종으로의 천이가 기대되었다. 군락별 종다양도지수는 0.9665~1.2450 범위로 낙동정맥 타 지역에 비해 높은 것으로 나타났다. In order to verify the characteristics of vegetation structure in Jeolgu valley, Nakdongjeongmaek, we set up 29 plots(each plot area is 10m×10m(100㎡)). The survey site is located in around the valley and its range is about 3km section. The forest vegetation communities were analysed by TWINSPAN classification. The results of communities were classified 5 types such as Pinus densiflora community, deciduous broad-leaved tree community, Quercus variabilis community, Quercus mongolica community, Larix leptolepis community. The deciduous broad-leaved tree which prefer to moist environment and Quercus spp. has dominant in around the valley and the northern slope, In addition, Larix leptolepis community expect to maintain the present status for a while. However, the under story of Larix leptolepis community have expanded the influence of deciduous broad-leaved tree such as Fraxinus mandshurica, Morus bombycis, Acer mono and so on. Therefore, there will be developed next ecological succession by species of deciduous broad-leaved tree. The diversity index showed form 0.9665 to 1.2450. It were analyzed that diversity index of Jeolgu valley was higher than other places in Nakdongjeongmaek.