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Silicon metal alkoxide 용액의 sol-gel 전이에서 중요인자
김세훈,오근호 한국결정성장학회 1995 韓國結晶成長學會誌 Vol.5 No.4
실리콘 알콕사이드 용액의 졸-겔 전이에 있어서 반응조건에 중요한 영향을 미치는 인자에 대하여 Raman 분광분석을 기초로 해서 고찰해 보았다. 촉매의 종류, 용매, 건조제어용 화학첨가제 및 물의 양과 같은 여러 가지 인자가 졸-겔 과정에 있어 전이메카니즘에 영향을 주었다. The important factors of reaction conditions in sol-gel transition of silicon alkoxide solution have been reviewed and discussed on the basis of Raman study. Various factors such as type of catalyst, alkoxide, solvent, drying control chemical additive and water content affect the conversion mechanism in sol-gel process.
피로를 주소로 내원한 환자의 생활섭생, 허손 및 피로의 상관성에 대한 고찰
김세훈,이장훈,이승보,최미영,김영철,우홍정,Kim, Se-Hoon,Lee, Jang-Hoon,Lee, Seung-Bo,Choi, Mi-Young,Kim, Young-Chul,Woo, Hong-Jung 대한한방내과학회 2008 大韓韓方內科學會誌 Vol.29 No.1
Objectives : Consumption is a chronic wasting disease, in oriental medicine concept. Fatigue is a common symptom experienced by many people who have consumption. However, there has been little study about the relationship between consumption and fatigue in the Oriental medicine. For this reason, we attempted to investigate the present status of fatigue of outpatients, and its relation with consumption index, public health practice index, Chalder fatigue scale and Subjective Symptoms of Fatigue Test. Methods : The subjects were 149 outpatients who complain fatigue between Nov. 1, 2006 and Oct. 31, 2007. We measured degree of consumption by consumption index. We measured degree of fatigue by Chalder fatigue scale and Subjective Symptoms of Fatigue Test. Public health practice were investigated by "Breslow's 7 health practice". Results : Studies have shown that a group who disregard public health practices have higher numerical value, in part of $q\grave{i}-x\bar{u}$, $xu\grave{e}-x\bar{u}$, and Physical symptoms than a group more concerned with public health practice. A group who has fatigue for a period over 6 months are more likely to be $q\grave{i}-x\bar{u}$, $y\bar{i}n-x\bar{u}$, Chalder fatigue scale, neuro-sensory symptoms than a group fatigued for less than 6 months. Among the subjects, 81 (55.5%) were considered as 'fatigue patients' by the Chalder scale. Chalder fatigue scale, according to the Subjective Symptoms of Fatigue Test, consumption also, The more increase of Subjective symptoms of fatigue test, the more of consumption scale. Conclusions : This study has shown that there is a link between consumption and fatigue. Moreover, oriental medicine's consumption is more concrete than fatigue scale, so consumption index will have wide application to the study of fatigue.
김세훈 한국결정성장학회 1995 韓國結晶成長學會誌 Vol.5 No.2
중성자 회절에 의해 고순도 $TeO_2$ 유리의 단범위 구조를 조사하였다. $Te{\cdot}O$의 결합길이$d_{Te-O}$)와 산소원자를 둘러싼 Te 원자의 배위수($N_{Te-O}$)를 결정하기 위해 고해상도 RDF 곡선의 $Q_{max}$ = 20, 23, 25, 28, 30의 첫 번째 peak를, pairdistribution함수 모두 Gaussian 형식을 따른다는 가정하에 least-squae법으로 peak 분리를 했다. 이 결과를 토대로, 고순도$TeO_2$유리는 하나의 Te 원 자에 4개의 산소가 배위되어 있는$TeO_4$의 단위구조로 이루어져 있으며, 각 2개의 산소원자는 평균 결합길이가 각각 1.916 $\AA$과 2.123 $\AA$으로 Te 원자에 결합하고 있는 것으로 밝혀졌다. Abstract The short range structure of pure $TeO_2$ glass was studied by neutron diffraction. In order to decide the values of $Te{\cdot}O$ bond length ($d_{Te-O}$) and the coordination number $(N_{Te-O})$ of oxygen atoms surrounding a Te atom, the first peak of the $Q_{max}$ = 20, 23, 25, 28 and 30 in the highly resolved RDF curves was deconvoluted by the least - squares method under the assumption that both of the pair distribution functions have a Gaussian form On the basis of these results, it is found that pure $TeO_2$ glass consists of $TeO_4$ structural units, in which Te atoms are coordinated by four oxygens and each two oxygen atoms are bonded to a Te atom with the average bond length of 1.916 $\AA$ and 2.123 $\AA$, respectively.