Polyphosphate가 Porphyromonas endodontalis의 성장에 미치는 영향에 관한 연구

최성백,최호영,민병순,박상진,이진용,최기운 大韓齒科保存學會 1998 Restorative Dentistry & Endodontics Vol.23 No.1

Polyphosphate has been used to prevent decomposition of foods and has been shown to have inhibitory effect on the growth of gram positive bacteria. The purpose of this study was to evaluate the effect of polyphosphate on the growth of Porphyromonas endodontalis, a gram negative endodontopathic bacterium. Porphyromonas endodontalis ATCC 35406 was grown in the presence of polyphosphates with different chain lengths. Inhibitory effect of each polyphosphate which was added at the beginnig or during the culture, was determined by measuring the optical density of the bacterial cell at 540nm and by viable cell count. The results from this study were as follows : 1. Polyphosphates were shown the growth inhibition of the Porphyromonas endodontalis. 2. The minimal inhibitory concentration(MIC) of polyphosphate was observed to be 0.04%. 3. Polyphosphates with chain lengths of 25 and 75 demonstrated the greatest inhibitory effect on the growth of Porphyromonas endodontalis. 4. Polyphosphates are bactericidal to Porphyromonas endodontalis, demonstrating the growth inhibition of the bacterium. The overall results suggest that use of polyphosphate may affect the growth of Porphyromonas endodontalis. Further studies will be needed to confirm the effect of Polyphosphate.

한의진단명과 진단요건의 표준화 연구 III : 3차년도 연구결과 보고

최선미,양기상,최승훈,박경모,박종현,심범상,김성우,노석선,이인선,정진홍,이진용,김달래,임형호,김윤범,박성식,송태원,김종우,이승기,최윤정,신순식 한국한의학연구원 1997 한국한의학연구원논문집 Vol.3 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the third year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows : - analyzing and differentiating of epidemic febrile disease - analyzing and differentiating in accordance with the Sasang constitution medicine based on four-type recognition - differentiation of disease according to pathological changes of Chong and Ren channels - standards for diagnosis of women's disease - standards for diagnosis of children's disease - standards for diagnosis of motor and sensor disturbance (-muscle. born, joint, etc.) - standards for diagnosis of neuropsychiatric disease - standards for diagnosis of five sense organ disease - standards for diagnosis of external disease The indivisual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name, notion of diagnosis pattern, index of differentiation of symptoms and signs, the main point of diagnosis, analysis of diagnosis pattern, discrimination of diagnosis pattern, prognosis, a way of curing a disease, prescription, herbs in common use, disease appearing the diagnosis pattern, documents. The standards for diagnosis of each disease was arranged by the diagnostic requirements in the following order : another name, notion of disease, the main point of diagnosis, analyzing and differentiating of disease, analysis of disease, discrimination of disease, prognosis, a way of curing and prescription of disease, disease in western medicine appearing the disease in oriental medicine, documents.

우리나라 長壽者의 生活 및 意識調査에 관한 硏究 - Ⅴ. 過去의 健康疾病 및 苦痛에 대한 態度 -

최진호(Jin-Ho Choi),변재형(Jae-Hyeung Pyeun),임채환(Chae-Hwan Rhim),양종순(Jong-Soon Yang),김수현(Soo-Hyun Kim),김정한(Jeung-Han Kim),이병호(Byeong-Ho Lee),우순임(Soon-Im Woo),최선남(Sun-Nam Choe),변대석(Dae-Seok Byun),김무남(Mu-Nam 군산대학교 수산과학연구소 1994 군산대학교 수산과학연구소 연구논문집 Vol.1 No.-

The present study was designed to be link a part of the research on the investigation on daily life and consciousness of the longevous people in Korea, and to investigate the health conditions, and the attitude on disease and suffering of longevous people in the past. 1. By the health conditions of longevous people between 40 and 60 years, ""very good"" showed the highest figure of 71.0%, followed by ""ordinary"" (21.6%). Consequently it is found that 92.6% of total longevous people surveyed maintained the good health conditions above ordinary. 2. Of the experiences of disease and/or injury after 60 years of longevous people, ""never"" showed the highest figure of 74.7%, while ""had"" showed the only 22.6% of total longevous people surveyed. 3. Of the details of disease and/or injury after 60 years of longevous people. ""digestive disease"" showed the highest figure of 32.6%. followed by ""apoplexia cerebri & hypertensions""(14.0%) and ""heart disease""(14.0%), and followed by ""respiratory disease""(12.3%). 4. Of the experiences of suffering between 40 and 60 years of longevous people, ""never"" showed 53.7% of total longevous people surveyed, while the frequency of suffering decreased in the order of ""once""(22.7%), ""2 times""(15.8%) and ""3 times""(4.7%). By the details of suffering between 40 and 60 years of longevous people. ""family life"" showed the highest figure of 85.1%, followed by ""business""(10.1%). 5. By the attitude on suffering of longevous people, ""tried to forget soon"" showed the highest figure of 54.2%, followed by ""continuous worried""(23.3%), and followed by ""not worried""(7.2%).

우리나라 長壽者의 生活 및 意識調査에 관한 硏究 - Ⅴ. 過去의 健康疾病 및 苦痛에 대한 態度 -

최진호(Jin-Ho Choi),변재형(Jae-Hyeung Pyeun),최재수(Jae-Sue Choi),임채환(Chae-Hwan Rhim),김수현(Soo-Hyun Kim),김정한(Jeung-Han Kim),이병호(Byeung-Ho Lee),우순임(Soon-Im Woo),최선남(Sun-Nam Choi),변대석(Dae-Seok Byun),김무남(Mu-Nam Ki 한국식품영양과학회 1987 한국식품영양과학회지 Vol.16 No.4

우리나라 長壽者의 生活 및 意識調査硏究의 一環으로 長壽者의 過去의 健康, 疾病 및 苦痛에 대한 對處態度 등을 調査ㆍ比較한 結果는 다음과 같다.<br/> 1. 更年期(40~60歲)의 健康狀態가 『대단히 건강했다.』가 71.0%로 가장 많고, 그 다음이 『건강이 보통이었다』가 21.6%로서, 전체 장수자의 91.6%가 보통이상의 건강상태를 유지했다.<br/> 2. 老年期에 접어든 후 疾病이나 負傷을 당한 經驗이 『없었다』고 대답한 경우가 74.7%로 대부분을 차지한 반면 『있었다』고 대답한 경우는 22.6%에 불과했다.<br/> 3. 疾病이나 負傷이 『있었다』고 한 경우의 內譯을 比較하여 보면 『消火器疾患』이 32.6%로 가장 많고, 그 다음이 『腦率中ㆍ高血壓』 14.0%, 『心臟病』 14.0%, 『呼吸器疾患』 12.8%의 순으로 되어 있었다.<br/> 4. 苦痛에 대한 經驗을 調査하여 본 結果, 苦痛이 『없었다』가 55.7%, 『있었다』가 44.3%로 거의 비슷한 傾向이었고, 苦痛에 대한 經驗內譯을 보면 『가정생활』이 85.1%로 대부분을 차지한 반면 『사업』 등은 10.1%에 불과해서 가정생활에 많은 문제가 있었음을 알 수 있었다.<br/> 5. 苦痛에 대한 對處態度롤 比較하여 보면 빨리 『잊을려고 努力했다』가 51.2%로 가장 많았고 그 다음이 『계속 걱정을 했다』(33.3%), 『걱정을 하지 않았다』(7.1%)의 순이었다.<br/> 6. 長壽한 사람들의 初經年齡은 『16~18歲』가 38.8%로 가장 많고, 그 다음이 『19歲이후』가 25.2%로서 전체 장수자의 64.0%가 16세이상에서 初經이 나타났으며, 閉經年齡은 『41~43歲』가 36.4%로 가장 많고, 그 다음이 『44~46歲』가 28.5%로서 전체 장수자의 64.9%가 46歲이하에서 閉經現象이 나타났다. 따라서 장수한 사람들의 初經年齡은 현재보다 4~5年 늦은 반면 閉經年齡은 현재보다 4~5年 빨랐음을 알 수 있었다. The present study was designed to be link a part of the research on the investigation on daily life and consciousness of the longevous people in Korea, and to investigate the health conditions, and the attitude on disease and suffering of longevous people in the past.<br/> 1. By the health conditions of longevous people between 40 and 60 years, "very good" showed the highest figure of 71.0%, followed by "ordinary" (21.6%). Consequently it is found that 92.6% of total longevous people surveyed maintained the good health conditions above ordinary.<br/> 2. Of the experiences of disease and/or injury after 60 years of longevous people, "never" showed the highest figure of 74.7%, while "had" showed the only 22.6% of total longevous people surveyed.<br/> 3. Of the details of disease and/or injury after 60 years of longevous people, "digestive disease" showed the highest figure of 32.6 %, followed by "apoplexia cerebri & hypertensions" (14.0%) and "heart disease" (14.0%), and followed by "respiratory disease" (12.8%).<br/> 4. Of the experiences of suffering between 40 and 60 years of longevous people, "never" showed 55.7% of total longevous people surveyed, while the frequency of suffering decreased in the order of "once" (22.7%), "2 times" (15.8%) and "3 times" (4.7%). By the details of suffering between 40 and 60 years of longevous people, "family life" showed the highest figure of 85.1%. followed by "business" (10.1%).<br/> 5. By the attitude on suffering of longevous people, "tried to forget soon" showed the highest figure of 51.2%, followed by "continuous worried" (33.3%). and followed by "not worried" (7.2%).

비복신경이식을 이용한 긴 거리의 말초신경 결손부 수복

이종호,이세영,김명진,이은진,안강민,김성민,최원재,명훈,황순정,서병무,최진영,정필훈 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.2

The surgery of oral and maxillofacial area poses the risk of cranial nerve damage such as trigeminal nerve or facial nerve. Inferior alveolar nerve is prone to damage in the third molar extraction, implant installation, orthognathic surgery, open reduction and rigid fixation, and tumor ablation surgery. On the other hands,facial nerve is likely to be damaged or sacrificed with trauma or parotidectomy. In case of inferior alveolar nerve injury, the incidence is reported to be about 1.3%. The nerve function will almost recover in minimal damage, but it won't recover at last in total damage of a part of nerve unit. In latter cases, nerve regeneration in intended by allograft as nerve substitute or various route of merve condit. But the recovery with autograft is believed to be most relialbe mrthod in the rapair of long-span(longer than 15㎜)nerve defect. We have performed autologous sural nerve graft in the repair of nerve defect, which is caused by resection of benign or malignant tumor. Hereby we report the method of nerve harvesting, recovery of defected peripheral nerve and the complications of donor site with the discussion of sural nerve anatomy.

백서 척수후근절로부터 슈반세포의 효과적인 체외 배양법

김성민,이종호,김남열,안강민,최원재,최시호,차미주,이주영,황순정,장정원,명훈,최진영,서병무,정필훈,김명진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.4

Schwann cells(SCs), an important component of the peripheral nervous system, intract with nerous to mutually support growth and replication for the peripheral nerve regentation. Recently, ading SCs to the lumen of guidance channel is widely tried to improve regeneration or to make regeneration possible over otherwise irreparable gaps. however, it is not easy to isolate and multiplicate SCs as much as enough to help the axonal regeneration. For the allogeneic SCs source for tubular nerve guidance, we developed a little bit improved technique of harvesting and multiplicating SCs. by culturing dispersed dorsal root ganglia in specially designed medium with growth factors and serial processing, we repeatedlly generate relatively homogenous SC cultures. Our technique was compared with other methods of literature using immunostaining methods such as GFAP, S100, BDNF and the total SC count assessment at different time interval after primary culture.

소결조건이 소결 청동계 마찰재의 마찰특성에 미치는 영향

최병호,박노진,정순욱 金烏工科大學校 1998 論文集 Vol.19 No.-

The effect of sintering conditions(temperature and time) on the frictional properties of sintered bronze-base were investigated. It was observed that with increasing sintering temperature up to 840℃ and sintering time up to 60 min. the hardness, bending strength and coefficient of friction increased continuously, but the wear rate decreased. At sintering temperature of 860℃, however, their mechanical and frictional properties decreased rapidly due to the sweating phenomenon of tin. In our experiments, the optimal sintering condition is that sintering temperature is about 840℃ and sintering time is about 60 min.. Its average grain size is about 14.2㎛.

적응제어계의 응답특성 및 강인성 향상에 관한 연구

최재석,최진배,이순영 慶尙大學校 工科大學 自動化및컴퓨터應用技術硏究所 1994 自動化 및 컴퓨터應用技術 Vol.1 No.1

This paper proposes a new adaptive algorithm to improve the robustness and performance of the adaptive control systems. This adaptive algorithm counteracts the effects of disturbances and makes the time derivative of Lyapunov function non-positive, V≤0. As a result, the output error approaches zero as t → ∞ not only in the presence of bounded disturbances, but ideal case. Computer simulation results are presented to show the effectiveness of the proposed algorithm.

전산화단층사진을 이용한 하악골 비대칭 환자의 저작근 평가

최순철,이선복,이진구,이원진,허민석,이삼선 大韓口腔顎顔面 放射線學會 2004 Imaging Science in Dentistry Vol.34 No.1

Purpose : To compare the size of the masseter and lateral pterygoid muscle between the affected and the unaffected side of the patients who have the chief complaints of the mandibular asymmetry. Materials and Methods : Twenty two patients (male: 4, female: 18, average age: 21.3 year-old) were radiographed using posterior-anterior (P-A) cephalography and computed tomography (CT). On P-A cephalography, the degree of deviation was determined by the distance from the mentum to the vertical reference line through the crista galli and the anterior nasal spine. On the scanned tracing papers of the maximum cross-sectional area of the masseter and lateral pterygoid muscle using axial CT images, the pixel number was measured. The ratio of the affected : unaffected sides were obtained. For the masseter and lateral pterygoid muscle, the relationship between the muscular volume and degree of skeletal hypoplasia was studied. Results : The half cases showed no skeletal asymmetry. The lateral pterygoid muscle of the affected side was larger significantly than unaffected side (p<0.05). However, there was no significant difference between two sides in the cases of skeletal asymmetry. There was only significant difference in the cases without skeletal asymmetry (p<0.05). Conclusions : To some extent, the slight mandibular hypoplasia could affect the growth of some masticatory muscles.

방사선조사가 설의 개방성창상치유에서 섬유아세포의 재형성에 미치는 영향에 관한 연구

최순철,박태원,유동수,이진구 大韓口腔顎顔面 放射線學會 1997 Imaging Science in Dentistry Vol.27 No.1

Radiation-impaired wound healing in animal experiments was believed to be an another logical experimental model to understand the wound healing mechanism in patients. The purpose of this study was to reveal the block point which would result in impaired healing. Twenty four rats(Sprague-Dawley strains) were divided into two groups according to the time interval between irradiation and wounding. Group I, observing the healing effect on the lst day and GroupⅡ are the healing effects on the 7th days after irradiation to the wound of the rat tongue. Experimental animals were sacrificed 3, 6, 12, and 24 hours after wounding. The specimens were examined by the light microscope and transmission electron microscope. The following results were obtained 1. Fibroblasts in both groups showed degenerative changes which were dilated mitochondria and rER, reduced microorganelle, vacuoles and little cytoplasmic process. 2. Average length between bands and quantity of the newly produced collagen fibers around fibroblasts remained unchanged against control group. 3. The severity of degenerative change of the fibroblast and impairment of wound healing including shortening of the thickness of collagen fibers were more severe in the group Ⅱ than in the group I.