상아질에 적용된 재 습윤제가 미세인장 결합강도에 미치는 영향

강희영,조영곤,김종욱,박병철,유상훈,진철희,최희영,기영재 大韓齒科保存學會 2004 Restorative Dentistry & Endodontics Vol.29 No.2

This study investigated that the effect of rewetting agent on dentinal microtensile bond strength (μTBS). Human molars were sectioned to expose the superficial dentin surfaces. Samples were divided into two groups according to type of adhesives-Single Bond (S) and One-Step (0)], and again subdivided into five groups by different dentin surface treatment-dry for 15s (D) , blot dry (BD) or dry for 15s, and rewet with different rewetting agents[distil1ed water (DW), Gluma Desensitizer (GD) and Aqua-Prep (AP)]for 30s. After application of adhesive, composite resin was built up on the bonding surface. Each tooth was sectioned to obtain stick with 1mm^(2) cross sectional area and the μTBS was determined by EZ test. In the S group, the mean μTBS of GD, AP and BD group was significantly higher than that of DW and D group (p < 0.05). In the 0 group, the mean μTBS of AP, GD, BD and DW group was significantly higher than that of D group (p < 0.05). The data suggested that Gluma Desensitizer and Aqua-Prep could be successfully used as rewetting agents, and Distilled water could be acceptable in aceton based adhesive system only.

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

하악골 골절에 대한 임상통계학적 연구

이성훈,김기영,조규승,소광섭,박홍주,조요기,오희균,유선열 大韓顎顔面成形再建外科學會 1998 Maxillofacial Plastic Reconstructive Surgery Vol.20 No.1

IgG GM₁ 항체와 Campylobacter jejuni 항체와 관련된 급성 운동축삭형 신경병증

홍경훈,김승현,이영배,이영주,김희태,김주한,김명호 대한신경과학회 1997 대한신경과학회지 Vol.15 No.5

선천성 수근관 증후군 1례 보고

이규훈,황치문,김민석,김희상,안경회 大韓再活醫學會 1998 Annals of Rehabilitation Medicine Vol.22 No.3

收用의 效果

李訓熙 朝鮮大學校 法政大學 1975 法政大論文集 Vol.3 No.-

The main purpose of this thesis is to explain the effect of expropriation distinguishing the effect of expropriating-decision and the effect for exercise of expropriating right which rises out of it because the effect of expropriation has the gradual nature of completion itself. And the attached purpose of this thesis is to explain the character of the real right acquisition of a promoter, the content of just and fair compensation, and the character of the right for expropriated land purchased.

收用效果의 段階性

李訓熙 호남대학교 1980 호남대학교 학술논문집 Vol.1 No.-

The main purpose of this thesis is to explain the effect of expropriation distinguishing theeffect of expropriating-decision and the effect for exercise of expropriating right which rises out of it because the effect of expropriation has the gradual nature of completion itself. And the attached purpose of this thesis is to explain the character of the real right acquisition of a promoter. the content of just and fair compensation, and the character of the right for expropriated land purchased.

Rings운동에서의 Giant swing동작에 대한 운동학적 분석

윤희중,박종훈,한충식,김영란,김충태 韓國體育大學校附屬 體育科學硏究所 1992 韓國體育大學校附屬 體育科學硏究所論文集 Vol.11 No.1

This study was to investogate the kinematic patterns of the giant. swing on rings by 3 male gymnastic. The motion was filmed at 60frame/sec high video camera. The result was as follows ; 1. Subj. C showed a large displacement in the wrist J. at phase I and Subj. B showed a large displacement at phase 2, 3, 4. 2. Subj. C showed a large displacement in the hip J. at down swig phase and Subj.B, C showed a large displacement. at upward swing phase. 3. Subj. A showed a large velocity a in the hip J. at phase 1 and Subi. C shooed a large velocity at phase 2, 3, 4. 4. Subj. C showed a large velicity in the shoulder J. at whole phase. 5. Subj. C showed a large angular velocity in the hip J. at down swing phase and subj. B showed a large angular velocity at upward swing phase. 6. Subj. B showed a larege angular velocity in the shoulder J. at. phase 1, and Subj. C showed a large angular velocity at phase 2, 4 also subj. A showed a large angular velocity at phase 3.

유한 차분 시간영역법을 이용한 GPS수신 안테나의 설계 해석

진태훈,최희주,변건식 東亞大學校 附設 情報通信硏究所 1998 情報通信硏究所論文誌 Vol.6 No.1

In this paper, a microstrip antenna is designed using a rectangular patech. To find characteristics of the antenna, computer simulations of teh rectangular single microstrip patch antenna are performed with changing width adn length. Through the results of simulation, we found that the 3-D FDTD method is an effective method for designing microstrip patch antenna. According to simulation the resonant point has been found it in the frequency received from GPS satellite. It is thought that make it match by adjusting the feed point.

고반복 펄스형 CO₂ 레이저 전원장치의 개발

김희제,정현주,김도완,이동훈 釜山大學校生産技術硏究所 1999 生産技術硏究所論文集 Vol.57 No.-

본 연구에서는 1㎑ 부근의 펄스 반복율을 가지는 경제적이고 컴팩트한 펄스형 CO₂레이저의 동작 특성에 관해서 기술하였다. 고압·고주파 펄스 변압기와 수 십 ㎑의 스위칭에 적합한 IGBT를 사용한 고압 펄스전원 장치를 레이저 공진기에 접목시켜 새로운 방식의 고반복 CO₂레이저 전원장치를 개발하였다. 공진기는 수냉방식의 저속축류형으로 제작되었고 제어부에는 전원장치에 사용된 2개의 IGBT를 정밀하게 제어하기 위해서 PIC 마이크로프로세서가 사용되었다. 완성된 장치의 펄스 반복율과 동작압력 그리고 레이저 매질 가스의 혼합비의 변화에 따른 레이저빔의 출력 특성실험을 통하여 가스 배압비 CO₂: N₂: He = 1 : 9 : 15, 펄스 반복율 700 ㎐, 동작압력 15 Torr에서 최대 레이저 출력 약 20.5W, 최대 효율 약 8 %였다. In this study, we aim to develope a cheap and compact pulsed CO₂laser with pulse repetition rate range of 1 ㎑. We used a IGBT as the switching element of a power supply, which is cheap and simple comparing to others. PIC one-chip microprocessor was used for precise. control of a laser power supply on the control part. And the laser cavity was fabricated as an axial and water cooled type. The laser performance characteristics as various parameters, such as pulse repetition rate, gas pressure, and gas mixture rate have been investigated. The experiment was done under the condition of three gas mixture rates of CO₂: N₂: He = 1 : 3 : 10, 1 : 1.5 : 5, and 1 : 9 : 15. For this experiment, working pressure was from 6 Torr to 15 Torr and pulse repetition rate from 100 ㎐ to 900 ㎐. As a result, the maximum average output was about 20.5 W at the working pressure of 15 Torr, the gas mixture CO₂: N₂: He = 1 : 9 : 15 and the pulse repetition rate of 700 ㎐.