여름철 계룡산국립공원 탐방로의 열쾌적성 및 어메니티 관리 연구

안시옥(Siok An),송도윤(Doyun Song),정다워(Dawou Joung),박범진(Bum-Jin Park),심규원(Kyu-Won Sim),박준효(Jun-Hyo Park) 국립공원연구원 2022 국립공원연구지 Vol.13 No.2

본 연구는 산악환경의 기상 특징과 계룡산국립공원 탐방로의 열쾌적성을 파악하고 열쾌적성이 높은 활동 시간 정보, 활동 공간 정보, 활동량 정보를 제공하기 위해 시행되었다. 탐방로의 열쾌적성 분석을 위해 여름철 도심 기온, 국립공원 방재기상관측장비(AWS, Automatic Weather System), 탐방로인 숲길의 평균 기온을 비교하였다. 또한, 계룡산 국립공원의 주요 탐방로 4개 구간의 미기후 요소와 수관울폐도 측정을 위해 총 240개 지점을 조사 후 열쾌적성을 파악 하였다. 도심과 국립공원AWS, 탐방로의 평균 기온을 비교하였을 때, 도심, 갑사AWS, 동학사AWS, 갑사 탐방로, 동학사 탐방로 순으로 평균 기온이 높게 나타났다. 이 결과, 탐방객이 직접 체감하는 탐방로의 열쾌적성을 고려해야 함을 의미한다. 주요 탐방로 4개 구간 조사 결과, 평균 수관울폐도는 동학사~남매탑 구간, 동학사~관음봉 구간, 갑사~연천봉 구간, 갑사~금잔디고개 구간 순으로 높았다. PMV(예상평균온열감)는 활동량이 2.8MET 일 때, 갑사~금잔디고개 구간, 갑사~연천봉 구간, 동학사~남매탑, 동학사~관음봉구간 순으로 높았다. 조사를 통하여, 열쾌적성이 높은 시간 정보, 공간 정보, 활동량 정보를 제시할 수 있었다. 탐방로의 열쾌적성 특성을 파악하여, 탐방로의 어메니티를 높일 수 있는 숲길 관리 방안의 기초를 마련하고자 한다. This study was conducted to understand the weather characteristics of the mountain environment and the thermal comfort of Gyeryongsan National Park trail and to provide information on activity time, activity space, and activity amount. For the analysis of the thermal comfort of the trail, the temperature of the city center in summer, the average temperature of the National Park Disaster Prevention Weather System (AWS), and the trail. Also, Microclimate elements and canopy closure were also measured in four major trails in Gyeryongsan National Park. After investigating a total of 240 points, thermal comfort was identified. When comparing the average temperature of the city center, National Park AWS, and trail, the average temperature was higher in the order of the city center, Gabsa AWS, Donghaksa AWS, Gabsa Trail, and Donghaksa Trail. As a result, it means that the thermal pleasure experienced by visitors should be considered. According to a survey of four major trails, the average canopy closure is Donghaksa~nammaetop route was high in the order of Donghaksa~Gwaneumbong route, Gabsa~Yeoncheonbong route and Gabsa~Geumjandigogae route. When PMV(Predicted Mean Vote) is 2.8MET, The PMV was highter in the order of Gabsa~Geumjandigogae route, Gabsa~ Yeoncheonbong route, Donghaksa~nammaetop route, Donghaksa~Gwaneumbong route. Through the survey, time information, spatial information, and activity information with high thermal comfort could be presented. By grasping the thermal comfort characteristics of the trail, we intend to lay the foundation for forest trail management measures that can increase the amenity of the trail.

EPx 자동생화학분석기와 컴퓨터간의 양방향 통신 시스템 구축

박기현,전효진 啓明大學校 醫科大學 1995 계명의대학술지 Vol.14 No.4

It has been understand that a laboratory information system(LIS) plays an important role in a hospital information system(HIS). However, few HIS has been equipped with a fully automated LIS. This is partly because, in order to achieve a fully automated LIS, there are many testing equipment has its own communication protocol. In this paper, a bi-directional communication system between an ABBOTT SPECTRUM EPx auto-chemical analyzer and a PC is constructed. With the communication system, it is possible that a PC controls an EPx's operations and that the PC receives test results form the EPx automatically. RS-232C serial ports are used in order to make bi-directional communication possible between them

VRML을 이용한 컴퓨터 조립과정 학습 시스템 설계 및 구현

박효진,창병모 숙명여자대학교 자연과학연구소 2000 자연과학논문집 Vol.- No.11

최근 가장 각광받고 있는 컴퓨터 분야 중 하나가 가상현실 기술이다. 가상현실 기술은 기존의 정보 제공 방식 및 상호작용 방식으로는 제공하기 어려운 생생한 지식과 체험을 다양한 매체를 이용하여 가능하게 할 수 있기 때문에 다양한 분야에서 활용되고 있다. 특히, 교육 분야에서 가상현실은 학생들에게 훨씬 더 효과적인 교육과 함께 실제 실험을 하기에 어려운 부분들도 가상으로 구현할 수 있게 해준다. 본 논문에서는 가상현실을 기반으로 하는 컴퓨터 조립과정 학습 시스템을 구현하였다. 컴퓨터 조립과정을 교육하는 데 있어서는 실습이 가장 중요하다. 그러나 기존의 자료들은 과정을 설명한 텍스트나, 2차원 이미지 데이터를 사용하고 있어 그저 보여주는 학습에 그치고 있다. 이런 단점을 보완하기에는 가상현실을 이용한 학습이 가장 좋은 대안일 것이다. 본 논문은 VRML과 EAI를 이용한 Java를 사용하여 시스템을 구현하였다. 이는 학습자들에게 좀더 현실감있는 교육환경을 제시해 주어서 학습효과를 극대화시킬 수 있다. This paper is organized as explanation and implementation of computer assembling process study system based on virtual reality. The proposed system is implemented in VRML(Virtual Reality Modeling Languge) and Java using EAI(Extemal Authoring Interface) in order to provide more realistic and more dynamic materialization than any other Web sites. This system provides three-dimensional infor malions, so it gives the students special experience in loaming computer architecture and computer assembling process.

마늘 잼의 저장과정 중 성상변화

박혜민,곽효순,김소희,문미아,오만진 충남대학교 농업과학연구소 2008 농업과학연구 Vol.35 No.2

In order to make a functional jam containing garlic, sugar, acid and pectin were mixed with garlic and concentrated by heating the mixture under atmosphere or vacuum conditions. And changes of some physico-chemical properties of the garlic jam(i.e., color, textural properties, vitamin C) were investigated during storage at 30℃. It was found that lightness(L) was higher in sample of vacuum concentration than that in atmosphere concentration and redness(a) and yellowness(b) were higher in sample of atmosphere concentration. During the storage lightness was found to decrease for all samples with more drastic decrease in sample of atmosphere concentration where browning was more severely observed after 8 weeks of storage. In terms of textural properties, hardness, chewiness and gumminess were higher in sample of atmosphere concentration than that in vacuum concentration. And springiness and cohesiveness were higher in sample of vacuum concentration. Although sensory score for garlic jam found to be lower than that for the existing strawberry jam, the present garlic jam might have high marketability if considering its physiological value. 마늘을 이용한 기능성 잼을 제조하기 위하여 마늘에 당, 산, 펙틴을 첨가하고 평압과 감압에서 농축하여 마늘잼을 제조한 후 색도, 조직특성을 조사하고 30℃에서 저장하면서 색도, 조직의 변화, 비타민 C의 변화를 측정한 결과는 다음과 같다. 원료마늘의 일반성분은 수분 57.2%, 탄수화물 23.6%, 조단백 1.9%, 조지방 0.75%, 회분0.93%이었고 비타민 C는 8.4 mg/l00g이었다. 명도는 진공농축한 것이 평압농축한 것보다 높았고 적색도와 황색도는 평압의 것이 높았다. 저장기간에 따라 명도는 모두 감소하였으나 평압에서 농축한 것이 감압보다 크게 감소하였으며 갈변화가 저장 8주에는 심하게 나타났다. 마늘잼의 조직특성은 hardness, chewiness, gumminess는 평압농축이 감압농축에 비하여 높았고 springiness, cohesiveness는 평압농축이 낮았다. 마늘잼의 기호성은 딸기잼에 비하여 떨어지지만 기능성을 감안할 때 시장성이 매우 높을 것으로 판단한다.

Inhibitory Effect of Cordycepin on Human Platelet Aggregation

박화진,--,--,--,--,--,-- THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY SCIEN 2004 Journal of biomedical laboratory sciences Vol.10 No.1

Cordycepin separated from Cordyceps militaris is a major physiologic active component in Cordyceps militaris. The platelet aggregation is stimulated by Ca^(2+), which is either mobilized from intracellular endoplasmic reticulum or transported from extracellular space. cGMP antagonizes the actions of Ca^(2+). Based on these facts, we have investigated the effects of cordycepin on the mobilization of Ca^(2+) and the production of cGMP on collagen (10 ㎍/ml)-induced human platelet aggregation. Cordycepin potently stimulated the human platelet aggregation induced by collagen (10 ㎍/ml) in a dose-dependent manner. Cordycepin (500 μM) inhibited also the collagen-induced human platelet aggregation in the presence both 1 mM and 2 mM of CaCl_(2). These are in accord with the results that cordycepin inhibited the Ca^(2+)-influx on collagen-induced human platelet aggregation. These results suggest that cordycepin decrease the intracellular Ca^(2+) concentration to inhibit collagen-induced human platelet aggregation. Besides, cordycepin increased the level of cGMP on collagen-induced human platelet aggregation. This result is related with the decrease of intracellular Ca^(2+) concentration, because cGMP inhibits the mobilization of Ca^(2+). In addition, cordycepin inhibited the human platelet aggregation induced by LY-83583, inhibitor of guanylate cyclase. This result suggested that cordycepin inhibit the platelet aggregation by stimulating the activity of guanylate cyclase. In conclusion, we demonstrated that cordycepin might have the antiplatelet function by inhibiting Ca^(2+)-mobilization via the stimulation of the production of cGMP.

철 산화균(Thiobacillus ferrooxidans)을 이용한 황화수소 제거-온도변화에 따른 황화수소 제거효율변화

박양호,손효진,김려화,권규혁,이중헌 한국공업화학회 2002 응용화학 Vol.6 No.2

Effects of temperature on hydrogen sulfide removal efficiency has been studied in this research. Two reactors which combined iron oxidization reactor and reduction reactor were manufactured. Iron oxidation reactor was used to oxidize Fe(II) to Fe(III) with Thiobacillus ferrooxidans and the hydrogen sulfide was oxidized to make element sulfur with the reduction of iron. The optimal temperature for the iron oxidation was 30℃ however that of iron reduction was 40℃. From this result, the optimal continuous operation conditions has been determined.

폴리페닐렌옥사이드/에폭시 수지 블렌드의 경화거동 및 파괴인성에서 폴리페닐렌옥사이드가 미치는 영향

박수진,정효진,나창운 한국화학공학회 2003 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.41 No.4

본 실험에서는 4관능성 에폭시 수지(4EP)와 Poly (phenylene oxide) (PPO) 블렌드의 경화거동, 열 안정성 그리고 기계적 계면특성을 알아보았다. PPO의 조성비는 0, 5, 10, 15, 20 phr로 하였다. 4EP/PPO 블렌드물의 경화거동은 근적외선 분광법과 시차주사열량계를 통해 관찰하였고, 열 안정성은 열분해 개시온도(IDT), 열안정성 인자 그리고 적분 열분해 진행온도(IPDT)에 의해 관찰하였다. 시편의 기계적 계면특성을 고찰하기 위해서 파괴인성 실험을 수행하였고, 시편의 파괴단면을 주사전자현미경으로 분석하였다. 그 실험결과, 전화율은 5 phr에서 높은 값을 나타내었고, 경화 활성화 에너지(E_(a))는 5 phr에서 PPO에 의해 경화가 가속화되어 감소되는 경향을 나타내었다. 열안정성은 분자내 PPO의 페닐그룹의 존재로 인해 PPO의 함량이 증가함에 따라 증가하였다. 또한 파괴인성 인자(K_(IC), G_(IC))는 5 phr에서 고분자 사슬 분자사이의 계면 결합력의 향상으로 인해 가장 높은 값을 나타내었다. In this work, the effect of poly (phenylene oxide) (PPO) in tetrafunctional epoxy resin (4EP) was investigated in terms of cure kinetics, thermal properties, and mechanical interfacial properties of the blends. The content of PPO was varied within 0, 5, 10. 15, and 20 phr to neat 4EP. The cure kinetics of 4EP/PPO blend system are examined by near-IR and DSC measurements. And the thermal stabilities were determined by initial decomposed temperature (IDT), thermal stability factors, and integral procedural decomposition temperature (IPDT) of the blends. For the mechanical interfacial properties of the casting specimens, the fracture toughness test was performed, and their fractured surfaces were examined by SEM. As a result, the conversion (a) is indicated in high value at 5 phr of PPO and, the cure activation energy (E_(a)) is decreased at 5 phr PPO, due to the plasticized PPO polymer molecule in epoxy resins. The thermal stabilities were increased, which can be explained by the presence of phenyl group of PPO in intermolecular chains. Also the fracture toughness parameters (K_(IC), G_(IC)) show high values at 5 phr PPO. This result is interpreted in the development of interfacial adhesion force between intermolecules of the polymer chains.

이온 펌프의 제작과 특성에 관한 연구

박종윤,이순보,부진효,신익조 성균관대학교 기초과학연구소 1990 論文集 Vol.41 No.1

By using theoretical model suggested by H. Hartwig et al., performance of sputter ion pump (SIP) was calculated and a SIP was constructed. Measurement of pumping speed of the SIP has been performed with the differential pumping method. The pumping speed for N_2 gas is 48 l/s, and for Ar gas is 20 l/s. These results agree with the theoreticaly expected values.

셀레콕시브 및 그 합성유도체들의 항암활성 스크리닝

박정란,강진형,구효정,노지영,류형철,박상욱,고동현,조일환,이주영,황다니엘,김인경 한국약제학회 2003 Journal of Pharmaceutical Investigation Vol.33 No.2

Selective COX (cyclooxygenase)-2 inhibitors including celecoxib have been shown to induce apoptosis and cell cycle changes in various tumor cells. New inhibitors are recently being developed as chemomodulating agents. We evaluated celecoxib and screened 150 synthetic compounds for anti-proliferative activities in vitro. Effects of celecoxib on COX activity, cell growth, cell cycle distribution, and apoptosis induction were determined in A549 COX-2 overexpressing human non-small cell lung cancer (NSCLC) cells. The COX inhibition of celecoxib increased with concentration up to 82% at 1μM after 24 hr exposure. Forty μM and 50μM of celecoxib induce G_1 arrest, and TUNEL-positive apoptotic cells, respectively. Among 150 compounds, several compounds were selected for having greater COX-2 inhibitory activity and higher selectivity than celecoxib with growth inhibitory activity. Celecoxib showed concentration-dependent COX inhibitory activity, and ability to induce cell cycle arrest and apoptosis in human NSCLC cells in vitro. Among synthetic analogues screened, several compounds showed promising in vitro activity as COX-2 inhibitory anticancer agents, which warrant further evaluation in vitro and in vivo.

한국 초기 근대 무용 연구 : 조택원, 최승희의 작품을 중심으로

박연진,김효순,정은주,문희숙 경희대학교 체육과학연구소 2000 體育學論文集 Vol.28 No.-

Many changing mankind's thought and recognition have affected our history, it is same that dance has become a new concept-dance art under the concept that experiment of a new formality and change are creation. Dancer's feeling is exposed through dance is a phenomenon of carrier which independently embodies self. Dance is a harmony between time and space and a harmony made by rhythmic movement and dance composition. Dance is an art expressing feeling and some situations intentionally dr not by moving its body. The way of communication has been changed since the introduction of the New Dance. In traditional dance, there was no sharply defined boundary to divide spectators and performers, that is, the object and the subject of communication. With the New Dance, there established modern theatres, which separated performers from spectators. With the New Dance, the dance itself became interpretive activity. The New Dance remodelled the traditional dance and introduced some element of ethnic dance from other countries. For example, the costume became so diversified in the New Dance that the range of expression also became expanded greatly.