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부분 무치악의 고정성 임플랜트 보철의 저위교합에 관한 3차원 유한요소법적 연구
김인섭,최충국,정재헌,Kim, In-Seob,Choi, Choong-Kug,Chung, Chae-Heon 대한치과보철학회 1996 대한치과보철학회지 Vol.34 No.3
The purpose of this study was to examine, by the method of 3-dimentional finite element analysis. how infraocclusion affected the stress distribution in surrounding bone and osseointegrated prosthesis. The 3-dimentional finite element mandibular models were made, in which the first and second molars were removed and the two osseointegrated implants were placed in the first and second molar sites and implant supported fixed prostheses were constructed. Analysis of equivalent stress and displacement induced by strong occlusion or infraocclusion was performed under vertical or inclined distributed loads. The results were as follows; 1. Under vertical load of 50N or 500N, the model in which infraocclusion had not been allowed showed greater stress on implants and the supporting bone than on natural teeth. 2. In the model in which infraocclusion of $30{\mu}m$ had been allowed, implant-prosthesis on the molars had no contact with opposing teeth under vertical load of 50N, However with the same allowed infraocclusion and the model under vertical load of 500N, implant prosthesis on the second molar had contact with opposing teeth, and stress distribution occured properly on natural teeth and implants. 3. Under $45^{\circ}$ inclined load, the model in which infraocclusion had not been allowed showed greater stress on implants and the supporting bone than on natural teeth. There was greater stress in the case of $45^{\circ}$ inclined load than in the case of vertical load. 4. Under $45^{\circ}$ inclined load of 50N or 500N, the model in which infraocclusion of $30{\mu}m$, had been allowed showed no occlusal contact on the implants and occlusal contact on the natural teeth. 5. In partially edentulous cases with implant supported prosthesis, we can prevent excessive load on implants by allowing infraocclusion.
청심온담탕(淸心溫膽湯)의 효능(效能)에 관(關)한 문헌적(文獻的) 고찰(考察)
김인섭,신길조,조기호,김영석,배형섭,Kim, In-Sup,Sin, Gil-Jo,Jo, Gi-Ho,Kim, Yeong-Seok,Bae, Hyeong-Seop 대한한방내과학회 1992 大韓韓方內科學會誌 Vol.13 No.1
In order to study oriental medical literature and clinical effects of Chungsimondamtang, the experiments of analgesic action, sedative action, anticonvulsive action, action on the isolated ileum, action on the circulatory system and hyperlipidaemia were observed. The results were as follows: 1. The analgesic effects were significantly noted. 2. The prolongaton of hypnotic time was noted. 3. The inhibitory effects on the convulsion induced by strychnine, picrotoxin and caffeine were significantly recognized. 4. The spontaneous momentum of isolated ileum was evidently inhibited, and recognized anti Ach. and anti Ba. effects. 5. The effects of descending blood pressure in normal rats and anesthetized rabbits were strongly recognized. 6. The effects of inhibition on the increase of TG. and TC. levels in hyperlipidaemia rats induced by Triton WR-1339 was significantly recognized. 7. The effects of inhibition on the increase of TG. and TC. levels in hyperlipidaemia rats induced by 75% fructose was significantly recognized. With the genelalization of the above-mentioned experimental results, literatual and clinical effects of Chungsimondamtang were approximate to actual experimental results.
바이러스 불활화 공정에 대한 Hepatitis A Virus와 Murine Encephalomyocarditis Virus의 민감도 비교
김인섭,Kim, In-Seop 한국미생물학회 2003 미생물학회지 Vol.39 No.4
Murine encephalomyocarditis virus (EMCV)는 혈장유래의약품의 바이러스 안전성 검증을 위해 hepatitis A virus (HAV)의 모델 바이러스로 사용되어왔다. 근래에 혈액응고인자제제에 의한 HAV 감염사례가 보고되면서 혈장유래의약품의 HAV 안전성 검증에 대한 국제적인 규제가 강화되어가고 있다. 본 연구에서는 HAV와 EMCV의 바이러스 불활화 공정에 대한 민감도를 평가하여, 혈장유래의약품 제조공정에서 HAV 불활화 공정의 검증법을 표준화하고자 하였다. HAV와 EMCV의 바이러스 불활화 공정에 대한 민감도를 평가한 결과 HAV가 60$^{\circ}C$ 열처리, low pH 처리(pH 3.9), 0.1 M NaOH 처리, 동결건조 공정 모두에서 EMCV보다 더 저항성이 큰 것을 확인할 수 있었다. EMCV는 특히 열처리와 0.1 NaOH 처리에 민감하게 불활화 되었지만, HAV는 큰 저항성을 나타내었다. 열처리의 경우 2시간 안에 EMCV는 검출한계 이하로 감소하였지만, HAV는 5시간 후에 검출한계 이하로 감소하였다. 0.1 M NaOH 처리시 EMCV는 15분 안에 검출한계 이하로 감소하였지만, HAV는 120분 정도의 처리에도 감염성 바이러스가 검출되었다. pH 3.9에서 25$^{\circ}C$로 14일 동안 항온하였을 때 HAV와 EMCV의 log 감소인수는 각각 1.63, 3.84이었다. 또한 혈액응고 8인자 제조공정의 동결건조 과정에서 HAV와 EMCV의 log 감소인수는 각각 1.21, 4.57이었다. 이와 같은 결과는 혈장유래의약품 제조공정의 HAV 불활화 또는 제거 검증시 모델 바이러스로 사용된 EMCV의 검증 결과를 해석함에 있어 보다 신중함을 가져야 한다는 것을 보여준다. 또한 보다 정확한 HAV검증 결과를 얻고자 한다면 모델 바이러스인 EMCV 보다 HAV를 사용하는 것이 보다 더 타당하다고 사료된다. Murine encephalomyocarditis virus (EMCV) has been used as a surrogate for hepatitis A virus (HAV) for the validation of virus removal and/or inactivation during the manufacturing process of biopharmaceuticals. Recently international regulation for the validation of HAV safety has been reinforced because of the reported cases of HAV transmission to hemophiliac patients who had received ntihemophilic factors prepared from human plasma. The purpose of the present study was to compare the resistance of HAV and EMCV to various viral inactivation processes and then to standardize the HAV validation method. HAV was more resistant than EMCV to pasteurization (60oC heat treatment for 10 hr), low pH incubation (pH 3.9 at 25oC for 14 days), 0.1 M NaOH treatment, and lyophilization. EMCV was completely inactivated to undetectable levels within 2 hr of pasteurization, however, HAV was completely inactivated to undetectable levels after 5 hr treatment. EMCV was completely inactivated to undetectable levels within 15 min of 0.1 M NaOH treatment, however, residual infectivity of HAV still remained even after 120 min of treatment. The log reduction factors achieved during low pH incubation were 1.63 for HAV and 3.84 for EMCV. Also the log reduction factors achieved during a lyophilization process of antihemophilic factor VIII were 1.21 for HAV and 4.57 for EMCV. These results indicate that HAV rather than EMCV should be used for the virus validation study and the validation results obtained using EMCV should be precisely reviewed.
실내 열환경 쾌적 조성 및 에너지 효율 극대화를 위한 지능형 재실자 활동량 산출모델 개발
최은지(Eun Ji Choi),이광호(Kwang-Ho Lee),박보랑(Bo Rang Park),최영재(Young Jae Choi),홍성협(Sung-Hyup Hong),문진우(Jin Woo Moon) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.-
본 연구는 실내 열환경의 쾌적 요소 중 하나인 재실자의 활동량(Metabolic rate, MET)을 산출하기 위한 지능형 MET 산출모델을 개발하는 것을 목적으로 한다. MET 산출모델 개발을 위해 딥러닝을 적용하였으며 재실자의 실내 활동 이미지 상의 인체 관절 좌표를 학습하여 MET를 출력한다. MET 산출모델 개발은 총 3단계로 진행되었다. 1) 학습 이미지 데이터 구축, 2) 모델 구조 설정 및 학습, 3) 학습 성능 평가. 학습 결과, MET 산출모델의 최적 구조는 14개의 인체 주요 관절 좌표 (x,y) 값을 입력 받는 입력층, 4개의 은닉층 및 1개의 출력층으로 구성되며 최적 모델의 MET 산출 정확도는 82.03%이다. 결과적으로 MET 산출모델의 개발을 통해 실내 재실자의 MET 측정 가능성 확인 및 PMV 제어 기반을 마련하였다.
폐콘크리트 미분말을 이용한 유해 폐기물 고화용 시멘트의 제조
김인섭,원종한,최광휘,최상흘,이종규,손진군,심광보,Kim, In-Seob,Won, Jong-Han,Choi, Kwang-Hui,Choi, Sang-Hul,Lee, Jong-Gyu,Sohn, Jin-Gun,Shim, Kwang-Bo 한국세라믹학회 2002 한국세라믹학회지 Vol.39 No.12
폐콘크리트 미분말과 고로 슬래그를 사용하여 유해 산업폐기물 고화용 시멘트를 제조한 후 수화성상과 압축강도를 평가하고 이 시멘트를 COREX 슬러지에 첨가하여 고화처리 하였다. 폐콘크리트 미분말과 슬래그 미분말을 1:1로 하고 여기에 포틀랜드 시멘트와 반수석고를 각각 10% 첨가하여 만든 고화용 시멘트로 사용 가능한 강도를 발현하고 있었다. 이 시멘트로 COREX 슬러지를 고화한 경우에 7일에서 140 kgf/$cm^2$을 상회하는 강도를 보여 폐슬러지를 고화시켜 안정화하는데 응용할 수 있음을 확인하였다. The cement for solidification of the toxic waste was fabricated using a mixture of the waste concrete powder and blast furnace slag in the ratio of 1:1 and its hydrate morphology and compressive strength of the sample were evaluated in order to apply to the solidification of the COREX sludge. The X-ray diffraction analysis of the sample which prepared by the addition of 10% Portland cement and hemihydrate showed the presence of $Ca(OH)_2$, ettringite, gel-phase and C-S-H hydrate. Compressive strength of the sample exhibited enough high to use as a solidification cement. The strength of the sample was over 140 kgf/$m^2$ in 7 days in case of solidification of the COREX sludge and the sample possess sufficient morphology for the solidification and stabilization of the waste sludge.