Am-Be 선원을 통한 중성자의 전단면적 측정

민영기,오선영,노태익,박상태,이대원,이삼열 東亞大學校 1996 東亞論叢 Vol.33 No.-

Total cross sections was measured for 6.45MeV∼8.96MeV (average 7.7MeV) neutron on ??, ??, ?? absorber using ?? fast neutron source. The 2" ø×2" NE-213 organic liquid scitillation detector was used as a spectrometer of neutrons and gamma-rays. The zero crossing time analysis method was introduced in order to obtain the pulse heigh spectrum of neutrons and n-γ pulse-shape spectrum was investigated. The ratio of neutron peak for a Vally was 1:20. The total cross section resulting from the experiment enabled us to suppose a optical model as a neutron model, obtain the radius of a nuclei.

젊은 성인에서 신체 만족도에 따른 문제해결양식, 대인관계문제와 우울증상과 자살사고와의 관련성

차승민,김태성,강문희,권명진,김정란,왕성근,지익성 대한생물치료정신의학회 2011 생물치료정신의학 Vol.17 No.2

Objectives:The aim of this study was to evaluate that problem solving styles, interpersonal problems, depression and suicidal ideation according to body image satisfaction. Methods:One hundred and nineteen young healthy normal subjects filled out administered the Body Dysmorphic Disorder Examination-Self Report (Korean version of BDDE-SR K-BDDE-SR), Problem Solving Style Scale(Korean version PSS), Korean Inventory of Interpersonal Problem(KIIP), Korean version of the Depression Anxiety Stress Scale(KDASS-21), Korean version of Beck Scale for Suicidal Ideation(Korean version SSI) and Korean version of Reynolds Suicidal Ideation Questionnaire(Korean version SIQ) for a month. Results:Out of the 119 subjects, 39%(N=46) was male and 61%(N=73) was female. In high K-BDDE-SR group (higher than 67), helplessness was significantly higher than low K-BDDE-SR group(lower than 67), and problem-solving confidence, creative style, approach style were significantly lower than low K-BDDE-SR group. Also, Higher level of all KIIP factors in High K-BDDE-SR group was significantly differ than low K-BDDE-SR group. In High K-BDDE-SR group, K-DASS-21, SSI, and SIQ were significantly higher than low K-BDDE-SR group. Using multiple regression analysis contributing variance toward the total factor score of K-BDDE-SR of participants were K-DASS-21 and SIQ. Conclusion:Our results indicates that high tendency of dissatisfied body images have differences in helplessness, problem-solving confidence, approach style, interpersonal problems, depression and suicidal ideation compared to low tendency of dissatisfied body images. It is necessary to study body dysmorphic disorder patients group in the future.

^161, ^163Dy의 0.003eV~50keV의 중성자 포획 단면적 측정

민영기,윤정란,노태익,김귀년,이삼열 東亞大學校附設基礎科學硏究所 2002 基礎科學硏究論文集 Vol.19 No.1

교토대학 원자로 연구소의 46MeV 전자선형가속기를 사용하여 중성자 TOF 방법으로, 에너지 영역 0.003eV∼50keV의 ^161, 163Dy sample의 중성자 포획 단면적을 측정하였다. 본 실험에서 사용된 Bi_4Ge_3O_12(BGO) 섬광 검출기는 sample의 핵반응에서 나오는 즉발 포획 감마선 측정에 사용하였다. 이 검출기는 중성자 선원으로부터 거리 12.7±0.02m 위치에 12개의 블록으로 되어 있으며, sample에 포획되는 중성자 flux의 절대치를 구하기 위해 Sm(n, γ) 및 ^10B(n, αγ) 반응을 이용하였다. ^161, 163Dy에 대한 포획 단면적 측정결과는 ENDF/B-VI 결과와 비교하였다. The neutron capture cross sections of ^161, 162Dy has been measured in the energy region from 0.003eV 50keV by using the neutron time-of-flight(TOF) promptγmethod with a 46MeV electron linear accelerator at the Research Reactor Institute, Kyoto University. An assemble of twelve pieces of BGO scintillation detectors, which was placed at a distance of 12.7±0.02mm from the neutron source, was employed as a total energy absorption detector for the prompt capture gamma-ray measurement, to obtain the absolute capture cross section value. The sample of ^161, 163Dy is a form of metallic plate. An enriched boron sample was employed to monitor the neutron flux/spectrum of the TOF beam using the standard reference cross section of the ^10B(n, αγ) reaction. Previous measurements and evaluated data in ENDF/B-VI was compared with the present results.

고속중성자 전단면적 측정에 관한 연구

민영기,노태익 東亞大學校附設基礎科學硏究所 1999 基礎科學硏究論文集 Vol.16 No.1

Am-Be(10mCi) 및 Cf(5μCi)선원을 이용하여 흡수체에 대한 고속중성자의 전단면적을 측정하였다. 본 실험에서는 검출기로부터 흡수체의 물질과 중성자 선원간의 거리를 변화시켜 보았고, 흡수체 물질의 두께를 변화하여 투과율을 측정하였다. 또한, 정확한 투과율을 얻기 위해 Polyethylene 및 Paraffin으로 collimator를 제작하여 측정하였고, 이때 사용한 흡수체 물질은 H₂O, 금속(Au, Al, Cu, Pb)등을 사용하였다. 고속중성자 선원의 에너지는 각각 7.70MeV(Am-Be), 2.35MeV(Cf) 평균에너지였다. 실험에서 측정한 투과율로부터, 흡수체의 전단면적을 구하였고, ENDF값과 비교하여 보았다. 사용된 검출기는 2"×2" NE-213 유기액체 섬광검출기이다. We calculate total cross section of the fast neutron to the absorber using Am-Be(10mCi) and Cf(5μCi). Transmission rate were measured by varying the distance from absorber to the neutron source and the thickness of absorber. To accept transmission rate accurately, we design the collimator which made from Polyethylene and Paraffin. We use H₂O and verious metal(Au, Al, Cu, Pb) with absorber. Mean energy of the fast neutron sources are 7.70MeV(Am-Be), 2.35MeV(Cf) respectively. From the transmission rate measured by experiment, we calculate total cross section of absorber and compared with ENDF values. This experinent utilize the 2"×2" NE-213 organic liquid scintillation detector.

軟骨에 대한 洋方 學位論文 56編에 대한 考察

廉益煥,宋泰元,吳旼錫 대전대학교 한의학연구소 2001 한의학연구소 논문집 Vol.10 No.1

Clinically the arthritis occupies much part of musculoskeletal diseases. The arthritis is subordinate to Bi-jeung in the oriental medicine. No matter what is cause of the diseases, the lesions of the arthritis are mostly cartilages and bursa. But in process of the depravation bones, muscles, tendons, ligaments and blood are influenced and become new the lesions of the arthritis, it is important that the treatments of the oriental medicine must be objectified and we must absorb a good of the western medical treatments and understand the excellent study of the arthritis in the western medicine. This study was done to comply a reference of 56 master's theses on the cartilage of the western medicine. And these theses were classified by the college, time, treatments and topics. The following resutls were obtained in this study: 1. Whereas In the theses on the cartilages of the western medicine, Jung-ang and Catholic university have the more theses than any other universities. 2. Analysing the theses on the cartilages of the western medicine, we can classify them by the topics with the influence on the regeneration and culture of the cartilages, observation of the historical structure and the influence on the cartilages by the operation. 3. The theses of the influence on the regeneration and culture of the cartilages were the most, 48%, and the second was the influence on the cartilages by the operation.(22%) However the theses on the observation of the historical structure occupied 16%.

大田大學校 大田韓方病院의 中風早期檢診 實態調査

염익환,송인선,유호상,손원택,오민석,송태원 대전대학교 한방병원 2001 惠和醫學 Vol.10 No.1

This study was done to investigate the distribution of disease, which belongs to the people who came to the Daejon Oriental Hospital for the examination of CVA. The results were as follows : 1. It shows the highest ratio in his 40's and in her 50's. 2. The Hypertension patient is 26% and 40's is the highest, by 35%. 3. The Obesity patient is 51% and 50's is the highest, by 57%. 4. The Diabet mellitus patient is 5% and 30's is the highest, by 9%. 5. The Hyperlipidemia patient is 44% and 60's is the highest, by 52%. 6. The Liver disease patient is 18% and 40's, 50's is the highest, by 21%. 7. Abnormal EKG patient is 39% and 60's is the highest, by 57%. 8. 16% patient have abnormalities in brain CT and 70's is the highest, by 42%. 9. 70% patient have abnormalities in C-spine series and 70's is the highest, by 85%. 10. 32% patient have abnormalities in Chest PA and 70's is the highest, by 99%. 11. Soyang type is 32%, Soyum type is 25%, Taeyum type is 43% and Taeyang type is 0%.

900MHz대 수동형 RFID 휴대 리더스 소형 원편파 안테나

최익권,강민식,이우태 충북대학교 컴퓨터정보통신 연구소 2006 컴퓨터정보통신연구 Vol.14 No.1

본 논문에서는 휴대용 RFID(Radio Frequency IDentification)리더안테나로 중심주파수 911MHz인 소형 원편파 마이크로스트립안테나를 설계 제작하였다. 안테나는 대칭모서리가 절단된 정사각형 형태를 채택하였으며 유전체기판은 유전율 4.4, 손실탄젠트 0.02인 FR4기판을 사용하였다. 설계에는 상용 시뮬레이션 도구인 ANSOFT 사의 DESIGNER V2 와 HFSS를 사용하였다. 제작된 안테나는 두께가 8mm, 크기가 130mm × 130mm로 소형이면서, -10dB 대역폭이 870MHz ~ 950MHz, 이득 4.4dB 그리고 축비가 3.42 dB로 비교적 우수한 특성을 가짐을 측정을 통해 확인하였다. In this paper, small size circularly polarized microstrip patch antenna for portable RFID reader antenna with a center frequency 911MHz is designed and fabricated. The antenna is of a corner truncated type and is fabricated with FR4 dielectric board of dielectric constant 4.4 and loss tangent 0.02. The DESIGNER V2 and HFSS simulation tools of ANSOFT corporation are used in the antenna design. The fabricated antenna is 8mm thick and as small as 130mm by 130mm in size. It's -10dB bandwidth, gain and axial ratio are shown to be 870MHz ~ 950MHz, 4.4dB and 3.42dB, respectively, by measurements.

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.

시험불안과 정신병리, 기질 그리고 가정환경 간의 구조적 관계에 관한 연구 : 시험불안-우울-불안-자기개념-가정환경간의 인과적 관계분석

신민섭,조수철,유태익 대한소아ㆍ청소년정신의학회 1999 소아청소년정신의학 Vol.10 No.1

비정상 모세관 점도계의 개발 및 혈액 대용 유체의 점도 측정

김동익,이병붕,서상호,조민태 대한혈관외과학회 2002 Vascular Specialist International Vol.18 No.1

The purpose of the present study is to measure the viscometer is consisted of a small cylindrical reservoir, capillary tubes, and the mass flow rate measuring system interfaced with computer. Two capillary tubes with 1.152 and 3.002 mm (inner diameter) are used to determine the diameter effects on the viscosity measurements. The instantaneous shear rate and gravitational driving force in the capillary tube are determined by measuring the mass flow rate through the capillary tube instantaneously. The measured viscosities of water and aqueous Separan solution as the blood analogue fluid are in good agreement with the reported experimental data