山林休養 適地評價를 위한 GIS 技法에 관한 硏究 : 江原大學校 山林科學大學 演習林을 대상으로

崔朝龍,崔晶棋,禹鍾春 한국산림경제학회 2003 산림경제연구 Vol.11 No.1

본 연구에서는 GIS 기법을 이용하여 강원대학교 연습림을 대상으로 산림휴양기능을 평가해 보았다. 연습림 전체 면적 중 31개 지역의 400ha정도가 산림휴양기능을 발휘할 수 있는 능력이 있는 지역으로 나타났다. 이 지역들을 임반별로 살펴보면 총 7개 임반으로서 3, 4, 5, 6, 7, 14, 21 임반이 이에 해당되는 것으로 나타났다. 현재 연습림의 산림경영목표에 따라 자연학습·휴양림지역으로 관리되고 있는 지역은 7, 8, 9 임반이다. 따라서 본 연구결과에 의하면 7 임반이 모든 여건을 고려할 때 산림휴양기능을 발휘할 수 있는 가장 적절한 임반이라고 사료된다. This study was tried to evaluate the suitable area for recreational forests in the Research Forests of Kangwon National University using GIS technique. The results showed that around 400ha in 31 areas of the Forest was suitable for the recreational function. In terms of compartment, these areas were included in the compartment 3, 4, 5, 6, 7, 14 and 21. Compartment 7, 8, and 9 are designed and managed as natural learning and recreational forests. Considering these, we think that the 7th compartment is the most suitable region for forest recreational function.

Hypophosphatasia 환아의 치료 증례

최병제,최형준,이제호,김기덕,박수정 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.3

1. Hypophosphatasia 는 골조직 및 치아조직의 비정상적인 석회화를 나타내는 대사장애로, 특징적구강내 소견 인 우치의 조기탈락 양상으로 치과에서 조기진단이 가능하다. 2. 본 증례에서 상악궁 확장을 동반한 의치 제작으로 심미적, 기능적으로 양호한 결과를 얻었으며, 영구치열기 까지 장기적 관찰 및 치료가 필요할 것으로 사료된다. hypophosphatasia is a rare metabolic disorder which manifests characteristics such as abnormal mineralization of bone and dental tissues, diminished serum and tissue alkline phosphatase, and increased urinary secretion of PEA. It ingerited as an autosomal recessive or dominant trait and occurs in all races. In general, hypophosphatasia can be classified in 4 subtypes which are the perinatal, infantile, childhood, adult type depending upon the age at presentation and severity. In young children with Hypophosphatasia the long bones show irregular defects, and the skull showes poor calcification. In older children with premature closure of the skull sutures there may ve multiple lucent area called gyral or convolutional markings, described as resimbling beaten copper, presumably resulting from increased intracranial pressure,Examination of the jaws reveals a generalized lucency of the maxilla and mandible, the cortical bone and lamina dura are thin, and the alveolar bone may be deficient. Clinical features of Hypophosphatasia imclude premature loss of deciduous teeth, especially incisors, hypoplasia of aplasia of root cementum, enamel hypoplasia, irregular calcification of dentin, large pulp chamber, and resorption of marginal alveolar bone and roots. Our report involves a patient with a chief complaint of early loss of both Mx. and Mn. deciduous ncisors. after conducting a through clinical and radiographic examination this patient was referred to pediatrics under the suspicion of hypophosphatasia, the diagnosis proved to be correct and successful results were accomplished through a denture made to improve esthetics and function.

殘留應力을 考慮한 鎔接材의 疲勞龜裂 進展擧動에 關한 硏究

최병기,이을호,국중민,기준호,임선빈,정장만 朝鮮大學校 機械技術硏究所 2000 機械技術硏究 Vol.3 No.1

The effect of welding residual stress on the initiation and propagation of fatigue crack is investigated so as to study the fatigue behavior in welding residual stress field. Especially, the relation between welding residual stress and fatigue crack opening behavior is investigated and the redistribution of residual stress as a fatigue crack propagates is examined. Following results are obtained. 1) In case of the load range is constant, as the stress ratio is changing to 0.1, 0.33, 0.5 the propagation life is constant but the growth life decreases. And than, when maximum load or minimum load is constant, as the stress ratio increases the growth life and propagation life increase. 2) The fatigue crack propagations rate da/dN appears to accelerate when the stress intensity factor range ΔK is less than 15MPa-m^1/2. 3) The residual stress that is appeared by welding decreases after cutting. 4) Fatigue crack propagation ratio is affected by tensional and compressible residual stress at the initial time, but it's similar to the original in the more than 20mm of crack length.

강원대학교 구내림 이용행태에 대한 설문분석

최정기,구소영,조선아,원종현 江原大學校 森林科學硏究所 2003 Journal of Forest Science Vol.19 No.-

본 연구는 강원대학교 학교 숲 이용자들의 행태를 분석하기 위하여 학생, 교수, 행정직원, 외부 방문자를 대상으로 설문조사를 실시하였다. 학교 구내림 필요성에 대한 질문에 대해서 학생이용자는 97%, 교수 이용자는 100%, 행정직원 91%가 필요하다고 응답하였고, 학교구성원의 80%이상이 구내림을 이용하는 것으로 나타났다. 가장 많이 이용하는 구내림 장소로는 학생과 행정직원은 연적지, 교수는 예술대 뒷산으로 조사되었으며, 구내림 이용동기에 대한 질문에는 학교구성원 모두 산책을 위해서라는 답변이 가장 많았다. 구내림 만족도에 대한 설문에서는 학교 구성원 모두 보통수준으로 답하였으며, 체육시설에 대해서는 불만족스럽다라고 응답하였다. 구내림 개선사항으로는 구내림 보존 및 정비, 체육시설확대, 조깅코스개발, 약수 및 연적지 물 관리 등에 대한 의견이 도출되었다. 구내림의 외부 방문자들에 대한 설문에서는 대부분 50세 이상인 퇴직자와 전업주부가 학교 숲을 찾고 있으며, 방문자들은 주로 오전시간에 80%가 찾아오는 것으로 조사되었고, 혼자 방문하는 경우가 70%를 차지하였다. 방문목적은 건강을 위한 산책 및 약수물 이용을 위하여 방문하는 것으로 나타났으며, 가장 많이 이용하는 구내림 장소는 연적지인 것으로 조사되었다. 구내림에 대한 만족도는 대부분 만족하는 것으로 나타났고, 구내림 개선에 대한 사항에는 체육시설 확대가 가장 많았으며 구내림 훼손방지, 산책로 및 벤치시설증대에 대한 요구가 있었다. This study was carried out to investigate the behavioral pattern of student faculty, administration staff, and visitor by questionnaire about campus forest of Kangwon National University. In the question of the necessity of the campus forest, 97% of students, 100% of faculty and 91% of administration staff agreed with the necessity of the campus forest and 80% of university members use the campus forest. The most frequent site of the campus forest was the Yeon-Juk pond for students and administration staff and was the site behind the art building for faculty. The main reason for use of the campus forest was mostly a walk. About the questions dealt with one's satisfaction regarding the campus forest, most members evaluated the average level, and the facilities of physical training were evaluated if the unsatisfied level. The improvements for the campus forest were suggested about conservation of the campus forest, increasing of physical training facilities and the jogging courses, and managing the mineral water and pond. The visitors using the campus forests were mostly retied people or housewives elder than 50 years old. 80% of visitors visits mostly in the morning and 70% of the visitors comes to the campus forest by oneself. The main reasons for use of the campus forest were a walk and dipping the mineral water. The most frequent location was the Yeon-Juk pond for the visitors. Most visitors were strongly satisfied with using of the campus forest. In the questionnaire about improvements of the campus forest, the visitors suggested the increasing of physical training facilities, conservation of the campus forest, and establishing more walking roads and beaches.

협심증 환자에서 경피적 관동맥 확장술 후의 QT간격분산(QT Dispersion)의 변화

최일준,이일수,이상곤,홍명기,박성욱,박승정,김유호 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.9

버지니아 텍 자연자원대학 발전계획

최정기 江原大學校 森林科學硏究所 2005 Journal of Forest Science Vol.21 No.-

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특발성 좌심실빈맥(Idiopathic Left Ventricular Tachycardia)의 성공적인 전극도자절제술을 위해 단극전기도(Unipolar Electrogram)가 유용한가?

최기준,남기병,강덕현,홍명기,송재관,김재중,박성욱,박승정,박종훈,김유호 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.4

상분리법을 통하여 제조된 새로운 개념의 지지형 액막의 기체투과특성

최평호,김범식,이정민,김철웅,구기갑,이상학 한국공업화학회 2004 공업화학 Vol.15 No.1

새로운 지지형 액막(SLM)을 용매 증발에 따른 1차, 2차 상분리법으로 3성분 고분자 용액으로부터 제조하였다. 액막재로 이온액인 BMIBF_(4) (BMI+ =1-(1-butyl)-3-methylimidazolium, BF_(4)=tetra-fluoro boratr)와 매트릭스 고분자로 polyvinylidenefluoride(PVDF)가 사용되었다. 이 고정화 액막의 O_(2), N_(2) 그리고 CO_(2) 기체 투과특성을 여러 조작 조건에서 조사하였다. SLM은 가혹한 조건에서 조작하였음에도 불구하고 오랜 시간동안 높은 CO_(2) 투과도 및 선택성을 유지하였다. 투과거동을 나타내는 인자인 투과도, 확산도, 그리고 용해도를 연속 측정 장치를 통하여 구함으로써 특성을 관찰하였다. SLM은 다른 기체에 비하여 CO_(2)에 대해서 높은 투과도와 선택도를 갖고 있었다. 특히, 막내 CO_(2)의 용해도는 다른 기체들에 비하여 매우 높은 반면 확산도는 큰 차이를 보이지 않았다. 또한 막내 이온액의 조성은 CO_(2) 용해도에 영향을 관찰할 수 있었다. 막내 이온액의 조성이 증가함에 따라서 CO_(2) 의 투과도 및 선택도가 극격히 증가하였다. 이는 SLM를 통한 기체 투과에 있어서 용해도가 주인자로 큰 영향을 끼침으로써 막내 이온액 조성 증가 SLM의 투과에 큰 영향을 미침을 확인하였다. The new supported liquid membranes (SLMs) were fabricated from ternary polymer solution contained ionic liquid in which primary and secondary phase separations were induced by the solvent by the solvent evaporaton. The used ionic liquid and polymer matrix were BMBF_(4) (BMI+=-(1-butyl)-3-methylimidazolium, BF_(4)-tetra-fluoro boratel and polyvinylidene fluoride (PVDF). Gas permeation properties of the SLM to O_(2), N_(2) and CO_(2) were studied at various operating conditions. Although the SLM were operated under severe operating condition, it maintained high CO_(2) permeability and selectivity for quite long time. The solubility coefficient of CO_(2) in the membrace was very high in comparison with those of other gases; whereas there was no big difference in the diffusivity between CO and other gases. Moreover, in the permeation of pure gases, it is observed that the ionic liquid content in the membrane affected the solubility of CO_(2) in the memhranc. With increasing ionic liquid content in the membrane, the permeability and selectivity of CO_(2) increase significantly. There fore, in the permeation of gases through SLM, the overall permeation performances weir affected mainly by solubility coefficient. This observation can be discussed in terms of the influence of solubility coefficient with ionic liquid content in the membrane.

Succinylcholine으로 유발된 Fasciculation과 Myalgia에 대한 Diazepam과 d-tubocurarine 전처치의 비교효과

최세진,길기진,이정은 충남대학교 의과대학 지역사회의학연구소 1985 충남의대잡지 Vol.12 No.2

Succinylcholine-induced muscle pain well documented. It is common to use subparalyzing dose of a non-depolarizing muscle relaxant before succinylcholine and accepted in clinical practice forpreventing of succinylcholine-induced fasciculation and it's associated sequalae. But it is needed to give large dose of succinylchcline to offer adeguate relaxation for tracheal intubation in these pretreated cases. This present study was undertaken to compare the effect of diazepam with d-tubocurarine on succinylcholine induced side effects. Sixty cases were studied if four different groups. In 1st group : no pretreatment, 2nd group : diazepam(0.05mg./kg.), 3rd group : diazepam(0.1 mg./kg.), 4th group : d-Tc.(0.05mg./kg.). The following results were obtained : 1. Diazepam pretreatment groups had no significant changes for the prevention of muscle fasciculation following succinylcholine compare to control group, but prevention of muscle fasciculation by d-Tc. pretreatment were significant. 2. Conditions for intubation were excellent in all groups. 3. In the prevention of muscle pain, there was no significant difference between the control and diazepam pretreatment group but significant difference between the control and d-Tc. prtreatment. 4) There was no specific relationship between muscle fasciculation and muscle pain.

양이장단자극을 이용한 각성유지 및 수면유도

정환목,배기성,김형식,우창진,최평,이만기 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1