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최영철,최영안,김준영,공보석 대한골절학회 1989 대한골절학회지 Vol.2 No.1
Operative treatment has been used in unstable ligamentous imjury of knee joint. We experienced three cases of ligamentous injury of knee that was accompained with head trauma and other organ injury. Despite of surgical candidate, we did only conservative treatment due to poor general condition and difficulty of anesthesia, The result was relatively better than we expected. We reported these cases.
최영철,조현우,오성우,문규돈,Choi, Young-Cheol,Cho, Hyun-Woo,Oh, Sung-Woo,Moon, Gyu-Don 한국건설순환자원학회 2015 한국건설순환자원학회 논문집 Vol.3 No.3
본 연구에서는 알칼리 활성화 슬래그 결합재의 반응성을 정량적으로 살펴보기 위해 미소수화열을 분석을 수행하였다. 알칼리 활성화 슬래그 결합재의 반응성 및 작업성 확보를 위해 다양한 알칼리 자극제의 종류 및 농도에 대해서 실험을 수행하였다. 알칼리 자극제 및 $SO_3$ 질량비를 변화하면서 미소수화열을 측정하였으며, 응결시간 제어를 위해 sodium tripolyphosphate ($Na_2P_3O_{10}$)와 hydrated sodium borate ($Na_2B_4O_710H_2O$)를 적용하였다. 그 결과, 알칼리 활성화 슬래그 결합재는 알칼리 활성에 의해 calcium silicate hydrate(C-S-H)를 촉진하는데 4~5% 농도의 알칼리가 필요한 것으로 나타났으며, $SO_3$ 함량이 높아질수록 누적 발열량이 작아지면서 전반적으로 발열이 지연되는 것으로 나타났다. 또한, 응결 지연제로서 hydrated sodium borate를 사용하였을 경우 발열을 억제하여 지연된 효과를 나타내며, 전체적인 누적 발열을 지연시키는 효과를 보이는 것을 확인할 수 있었다. In this research, isothermal conduction calorimetry analysis has been conducted to investigate the reactivity of alkali activated slag binders. In order to secure the reactivity and workability of alkali activated slag binders, experiences with various types and concentrations of alkali activators were performed. Isothermal conduction calorimetry were measured with different alkali activators and mass ratio of $SO_3$ to binders as variables, and sodium tripolyphosphate ($Na_2P_3O_{10}$) and hydrated sodium borate ($Na_2B_4O_710H_2O$) were used to control setting time. As a results, alkali activated slag binders required alkali activators with 4 to 5 percent of concentration to accelerate the formation of calcium silicate hydrate(C-S-H) by alkali-activation, and overall heat generation rate delayed as accumulated heat decreased due to the high $SO_3$ contents. Moreover, the use of hydrated sodium borate as setting retarder causes elongated setting time due to delaying heat generation, so it can be considered that setting retarder played an important role in delaying total heat generation rate.
최영철,이동진,손경락,장호성,한동근 대한산부인과학회 1996 Obstetrics & Gynecology Science Vol.39 No.10
A rare case of low grade endometrial stromal sarcoma was observed in 44-year old woman. The clinicopathologic finding and a review of literature on endometrial stromal sarcoma were described briefly.
정샛별,이긍호,최영철 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.3
치과의사는 자폐인의 치료시 자폐증의 정도와 의학적 관리가 필수적인 질환, 내과적 병력 , 또는 현재 환자가 복용하고 있는 약물등을 고려하여 이에 따라 적절한 행동조절 방법을 선택하여야 한다. 행동조절 방법의 선택시 술자가 선호하는 방법을 우선 하기보다는 환자의 상태와 치과치료시 환자와 보호자가 받는 스트레스를 최우선으로 고려하는 것이 필요하다. 환자의 현증에 대한 적절한 행동 조절하의 치과치료도 중요하지만, 그보다 더 중요한 것은 환자가 거부감을 느끼지 않고 치과에 내원할수 있도록 훈련시키는 것과 지속적인 구강위생 관리이므로 보호자를 위한 구강위생 관리교육 및 주기적인 내원에 의한 관리가 필요하다고 생각된다. The autism is a complex disorder, characterized language impairment, perceptual-motor difficulties, and social disturbance. The autistic children have hyperactivity, lack of cooperation, inappropriate patient/dentist interaction, so they require pro fessionally recognized behavioral management technique during dental treatment such as behavior modification, pharmacological agents, and general anesthesia. A behavior management technique can be chosen by factors such as the severity of autism possible accompanying disabilities, degree of cooperation, oral and general conditions of children. A non-pharmacological behavior modification may be selected for the autistic children who are able to communicate with dentist with mild dental caries, without compromised medical history. In case of excessively hyperactive, destructive, antisocial, and/or severe communicative disorder, a sedation technic with chloral hydrate, antisocial, and/or severe communicative disorder, a sedation technic with chloral hydrate, hydroxyzine, midazolam or nitrous oxide gas might to be performed. General anesthesia is preferred for severe communicative and/or behavioral disorder, elder age, excessive dental care need, and living a remote area.