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南基奉,吳世奎 東新大學校 1995 論文集 Vol.7 No.-
The purpose of this study is to investigate functional and physical layout for university campus planning, and to find an alternative direction for campus planning. 6 campus projects, as campus planning examples in the Korean context, were selected to verify the functional allocation and connection. The sample projects are investigated to identify the nature of project, criteria of organization, method of connection, user's cognition. By the comparisen of the proposals with the present situations, seueral common characteristics are found. An alternative method of functional and physical organization is proposed, and the planning strategies are formulated.
사무직 여성 근로자의 경부 통증 유무와 관련된 요인 연구
남기봉 ( Ki Bong Nam ),정석희 ( Seok Hee Chung ),김성수 ( Sung Su Kim ),이길재 ( Gil Jae Lee ) 한방재활의학과학회 2009 한방재활의학과학회지 Vol.19 No.2
Objectives: The purpose of this study was to investigate the factors related on pain in female office workers. Methods: Neck pain group of 31 female subjects complained of neck and arm discomfort. Normal group of 20 female subjects had no complaints or minimal discomfort. Cervical curvature and muscle tone were assessed by whole spine x-ray, meridian-electromyography(MEMG), craniovertebral angle, and Moire. Neck pain was evaluated by Neck Disability Index(NDI) and Visual Analog Scale(VAS). The emotional and other physical factors that could effect neck pain were checked by questionnaires including Beck Depression Index(BDI), Stress Reaction Index(SRI), Holmes & Rahe Social Readjustment Rating Scale(SRRS), International Physical Activity Questionnaire(IPAQ), and Gastrointestinal Symptom Rating Scale(GSRS). Results: The contraction and fatigue of upper trapezius by MEMG was significantly higher in the neck pain group. And BDI, SRI, SRRS, and GSRS were significantly higher in the neck pain group (p<0.05). However, there was no significant difference in the Jackson`s angle, Cobb`s method, craniovertebral angle, and moire between two groups. Conclusions: The results suggest that neck pain is related to mental stress rather than physical stress and physical stress does not change cervical curvature significantly.
남기봉,박풍모,최민석,윤재랑,동종인 한국폐기물자원순환학회 2017 한국폐기물자원순환학회 학술대회 Vol.2017 No.11
탄소기반의 유기화합물로 이루어져 있는 바이오매스(Biomass)는 차세대 에너지원으로서의 역할을 기대하고 있으며 풍부한 부존량과 탄소 중립적인 특징을 가지고 있다. 목질계 바이오매스의 구성성분 중 25~35%를 차지하고 있는 리그닌(Lignin)은 복잡하고 거대한 페놀축합물로 이루어져 있는 풍부한 천연 고분자이다. 본 연구에서는 리그닌을 에너지자원으로서 활용을 극대화하기 위하여 회전로상(Rotating bed) 열분해 공정을 구성하였고, 리그닌을 회전로상 열분해 공정에 적용하기 전에 고정층(Fixed bed) 열분해 실험을 실시하였다. 리그닌의 물리・화학적 특성, 열적특성을 분석하였고, 고정층 열분해 공정과 회전로상 열분해 공정을 적용하여 리그닌의 열분해 특성을 분석하였다. 리그닌은 휘발분(volatile matter) 62.9%와 고정탄소(fixed carbon) 32.6%가 주를 이루고 있었으며, 원소분석결과 탄소(C) 62.4%와 산소(O) 30.6%가 주를 이루고 있는 것을 알 수 있었다. 열중량분석(TGA) 결과 리그닌의 중량감소는 500℃의 온도범위 이후 반응이 종료됨을 확인 할 수 있었다. 회전로상 공정에서의 액상생성물은 약32.0%의 생산 수율을 보였으며, 고부가가치 성분인 monomeric phenolics 성분들이 주로 검출되었다. 발열량 측정 결과 약 7,000kcal/kg로 측정 되었고, 시판되고 있는 연료 및 연료보조제와 비교를 통해 연료로서의 수준을 나타내었다. 공정의 특성을 분석하기 위해 컴퓨터 프로그램 전산유체역학(CFD, Computational Fluid Dynamics) 상용 Sofrware인 FLUENT를 사용하였다. 위의 실험과 시뮬레이션을 통해 회전로상 열분해의 액상생성물 특성 분석과 공정의 일반화 가능성을 보고자 하였다.
사무직 여성 근로자의 경부 통증과 물리적 요인의 상관성 연구
남기봉,조융기,류재환,김성수,Nam, Ki-Bong,Jo, Yoong-Ki,Rew, Jae-Hwan,Kim, Sung-Su 척추신경추나의학회 2009 척추신경추나의학회지 Vol.4 No.1
Objectives : The purpose of this study was to investigate the relation between neck pain and physical factors in female office workers. Methods : Neck pain group of 31 female subjects complained of neck and arm discomfort. Normal group of 20 female subjects had no complaints or minimal discomfort. Cervical curvature and muscle tone were assessed by whole spine x-ray, meridian-electromyography(MEMG), craniovertebral angle. Neck pain was evaluated by Neck Disability Index(NDI) and Visual Analog Scale(VAS). Results : The NDI score and contraction power of upper trapezius by MEMG had a relationship significantly. However, there was no relationship between NDI and cervical curvature. Conclusions : The results suggest that neck pain is related to muscle tone rather than physical stress and cervical curvature.
소형 유연 전극 축전기 센서를 이용한 액체의 점도 측정법 연구
남기봉 한국물리학회 2018 새물리 Vol.68 No.9
A novel method of utilizing a flexible-membrane capacitive sensor is introduced as a means of estimating the viscosity of liquid samples. The capacitor was driven by an AC signal, resulting in the membrane vibrating at twice the driving frequency. The liquid sample in the space between plates acted as a damping media, resulting in a shift of the resonance frequency toward the lower band. This shift can be used to render information about the damping or the viscosity of the medium. For a physical diameter of 10$^{-2}$ m and a thickness of 10$^{-4}$ m, a maximum shift of 10 Hz is expected from the simulation. By using a time-varying model for the viscosity, one can also product the time-dependent shift of the resonance frequency. 본 연구에서는 액체의 점성도를 측정하는 수단으로 유연 전극의 축전기 진동을 이용하는 방법을 소개한다. 축전기 양단에는 교류 전압을 인가하여 인가 신호 진동수의 배 진동수로 전극막을 진동시킨다. 전극 사이에 채워진 액체 시료는 진동을 감소시키는 동시에 공명 진동수를 낮은 쪽으로 이동시키는데, 이 부분의 기전은 강제 조화진동자 모델을 적용하되, 점도를 진동감쇠계수와 직결된 물리량으로 가정하고 설명한다. 직경 10$^{-2}$ m, 두께 10$^{-4}$ m의 센서를 가정하였을 때 축전 용량은 20 $\sim$ 30 nF로 계산되었으며, 계산에 사용한 진동감쇠계수를 적용하였을 때 진동수의 이동은 약 10 Hz 정도로 얻어졌다. 점도와 관련하여 액체의 밀도 환산에 대한 가능성도 검토한다.
한경남,남기봉,정충훈 한국어류학회 2001 韓國魚類學會誌 Vol.13 No.1
The early developmental stages, growth and morphological changes of the Korean bullhead, Pseudobagrus fulvidraco, were studied from a series of reared specimens. Details of the early developmental stages are illustrated with special reference to morphological transformations. Egg and sperm of Korean bullhead were obtained from mature adults under hormonal treatment, fertilized artificially, and incubated in the aquarium. The incubation period of fertilized eggs was 55 to 66 hours at a temperature of 24.9±0.34℃. Larvae were fed successively with Artemia salina and Daphnia magna for 2 to 15 days and artificial food after 20 days. Fertilized eggs were adhesive and spherical with a diameter of 2.04㎜(n=100). The mean total length of newly hatched larvae was about 4.92±0.33㎜. Mouth opening occurred on one-day-old yolk-sac larvae, and initial feeding was observed on the third day after hatching. The morphological transitions from larvae to juvenile and juvenile to young stages occurred when the fish reached about 17㎜ in total length(about 13 days after hatching) and about 32㎜ in total length(about 30 days after hatching), respectively. Many changes in proportion of body parts to total length were observed at about 7∼8㎜ and 30∼32㎜, corresponding to the transformations from larvae to juvenile and from juvenile to young, respectively. In comparing relative growth of each body part against total length, those characteristics related to head parts showed positive growth in the pre-larval stages, while those concerning mobile abilities showed positive growth in the post-larval stage.