자동접종장치의 개발에 관한 연구

이병엽,조덕호 한밭대학교 산업과학기술연구소 1994 논문집 Vol.2 No.-

Inoculation is one of the important treatments in gray cast iron production. In spite of the fact that post inoculation is a treatment that should not be abbreviated, it is often abbreviated in many foundary shops and as the result many kinds of casting defects are occurring. In this study we made and efforts to develop automatic inoculation equipment in order to automatise the conventional manual inoculation. Principal abilities of this equipment are as follow. 1. Total feeds, feeding speed, feeding time, and total running time are indicated on LCD. 2. If feed and time are determined and inputted, speed and running time is calculated and indicated automatically. 3. If speed and time are determined and inputted, feed and running time is calculated and indicated by accumulation. 4. Automatic and munual operation are possible. 5. By the replacement of inoculant feeding disc, the amount of inoculant can be regulated form 1 to 120 gr/sec. 6. Owing to campact, set-up and movement of equipment are convenient and various inoculation can be applied ; ladle inoculation, stream inoculation, and so on…

단일전극을 가진 마이크로 가스센서의 제작 및 특성

송갑득,박영일,이상문,이윤수,최낙진,주병수,서무교,허증수,이덕동 한국센서학회 2002 센서학회지 Vol.11 No.6

센서의 안정도와 감도를 개선시킬 수 있는 단일전극을 가진 열선형 마이크로 가스센서를 제작하였다. 일반적으로, 금속산화물 반도체를 이용한 가스센서는 히터전극과 감지전극의 두 개의 전극을 가지고 있다. 제작된 센서는 히터전극위에 감지물질을 형성하여 단일 전극을 가지는 구조를 가지고 있다. 히터와 감지전극으로 사용되는 Pt는 glass 기판위에 스퍼터링법으로 형성하였으며, SnO_2 감지물질은 제작된 Pt 전극위에 열증착시켜 형성하였다. SnO_2막은 lift-off 공정을 이용해서 패턴을 형성하고 1시간 동안 산소분위기에서 열산화하였다. 제작된 소자의 크기는 1.92x.1 mm^2 이다. CO 가스에 대한 감지특성을 조사한 결과 1,000 ppm에 대해 100 mV의 출력변화를 나타내었으며, 넓은 농도범위(0 ~ 10,000 ppm에서 선형적인 전압출력을 나타내었다. 또한 가스 반응 전과 반응 후의 전압출력을 비교해 볼 때, 1 % 이내의 편차를 나타내는 우수한 회복성을 나타내었다. Micro gas sensor with single electrode was proposed for improving stability and sensitivity, Generally, metal oxide gas sensors have two electrodes for heating and sensing. This fabricated new type sensor have only a single electrode by forming a sensing material onto heating electrode. Pt as a heating and sensing electrode was sputtered on glass and a SnO_2 sensing material was thermally evaporated on Pt electrode. SnO_2 was patterned by lift-off process and then thermally oxidized in O_2 condition for 1 hr., 600 ℃. The size fabricated sensor was 1.9 x 2.1 mm^2. As a result of CO gas sensing characteristics, this sensor showed 100 mV change for 1,000 ppm and linearlity for wide range(0 ~ 10,000 ppm) of gas concentrations. And the sensor shows a good recovery characteristics of 1 % deviation compared to initial resistance.

TV 스포츠 프로그램이 대학생들의 스포츠활동에 미치는 영향

박병주,이상봉,서봉한,이영덕,노영태,김정식 釜山大學校 附設 體育科學硏究所 1999 體育科學硏究所 論文集 Vol.15 No.-

One of the purpose of this study was to research that how TV sports programs have an effect on the sports activities of college students Another purpose was that this research would be used to make more effective and systemetic sports program and to create sound atmosphere filled with brightness through reasonable sports activities of students. The subjects for this study were composed of make male and female students of S,A and D university in Pusan, excluding those who belonged to physical education department. And the questionnaires were distributed at random. The results were as follows. 1. In the question asking frequency of sports event involved, it was showed that male student take part in 2~3 events, I event in order and female nothing, l event in order. In the rate of sports activities in everyday life, level of male students(3.98±1.4) was higher than that of female(2.75±0.9). 2. In the question asking the feeling while watching sports program on TV, it was showed that male students feel the need of sports strongly, want to run in training wear in order and female feel a little need of sports, don't care about it in order. 3. In the question which factors make them feel the desire of participation in sports activities, it was showed that both student feel the desire 'when they want to increase fitness and strength', 'when they want to relax stress' in order 4. In the question asking media where students get information, it was showed that male students get form TV, newspaper, sports magazine, teaching material in order, and female TV, newspaper, sports magazine in order. In the way to fing the result of sports game, it was showed that both student get through TV broadcasting, newspaper, radio in order, it was showed that male students get from TV sports program, lesson, school class in order, and female students get from school class, lesson, TV sports program on order. 5. In the reason why students watch TV sports program, it was because that male students have an interest in sports, want t release stress in order and female students want to release stress, have an interest in sports in order. In the reason why students don't watch TV sports program, it was because that male students want to watch another programs, don't know the rules and how the game is operated have no interest in sports in order. 6. In dissatisfying factors when watch in TV sports program, it was showed that for male, TV program are declined to some popular sports game', TV casting hour is too short' in order and for female 'there are not sufficient explanation on rules and skills', 'programs for female are rare' in order. 7. In the question asking what they get from TV sports program, it was showed that male students get security of emotion, relaxation of stress, acknowledgement of health and rules and skills of sports of sports in order and female get security of emotion, relaxation of stress, rules and skills, acknowledgement of health in order. 8. In the volume of watch TV sports program, it was showed that male watch 'sometimes', 'a lot' in order and female watch 'seldom', 'sometimes' in order. In addition, in the volume of watching international sports event such as Asian game, Olympic and World cup, it was showed that male students sometimes watch some events they like almost most games in order and female students watch some events, seldom in order. 9. In the helpful program, it was showed that both male and female students want lesson program, live sports event, special foreign sports event in order. 10. In the question asking which program they want to watch, it was showed that male students want to watch high-leveled foreign sports events, lesson program, live casting in order and female want lesson program, high-leveled foreign sports events, sports enlightment program in order. 11. In the relation between sports involved and TV sports program, it was showed that male student answered 'just so', 'very helpful' in order and female student answered 'a little helpful', 'very helpful' in order. In which part of TV sports programs is helpful to sports involved, it was showed that both male and female students answered 'rules','basic skills', 'sportsmanship and manners', 'choice of sports goods' in order.

위험물질의 누출에 따른 독성영향평가에 관한 연구

설수덕,이병선,최재욱,이내우,이수길 釜慶大學校 1998 釜慶大學校 論文集 Vol.3 No.2

In an incident using the numerical method of CPQRA (Chemical Process Quantitative Risk Anslysis), it was estimated a risk for the dispersion of toxic materials as MIC, Acrolein and Toluene. Because CPQRA contained a many variation elements in spite of the approval error as the conditions of wind speed, weather stability class and dispersion coefficients etc., we could know that its accuracy is very high and it calculate an effect distance for each concentration, concentration for calculated spots and effect categories and areas in dispersion of toxic materials. Using these data, it would be used of a basic method in the evaluation of a risk degree and the prevention and protection of an incident. Also it would be used to motive for development of new difpersion model at the atmosphere which is near by real conditions for the numerical method of CPQRA, especially it would provide basic information and a development of nontoxic alternative materials in human body.

國民學校 敎師의 科學敎育的 資質에 關한 調査硏究

金德萬,金容德,河炳權 서울교육대학교 과학교육연구소 1982 科學과 數學敎育 論文集 Vol.8 No.-

「洪吉童傳」을 통해서 본 許筠의 思想

姜炳德 朝鮮大學校 敎育大學院 國語敎育學會 1983 國語敎育論叢 Vol.3 No.-

斷續方式靜電測定器의 製作

孫炳基,文在德 경북대학교 교육대학원 1974 논문집 Vol.5 No.-

An equipment for static-electricity measurements was constructed by employing the chopping system. Its structure has been explained and its performance characteristics investigated. It was sensitive and much more capable by using with a cathode-ray oscilloscope. An equivalent circuit for the constructed equipment has also been analyzed, and the equivalent analysis was in good agreement with the experimental results.

FET형 포도당 센서를 위한 PVP/DAST/GOD 고정화막 형성기술

조병욱,이수근,박이순,이종덕,손병기 경북대학교 센서기술연구소 1992 센서技術學術大會論文集 Vol.3 No.1

圓佛敎學의 方向

柳炳德 圓光大學校 圓佛敎學硏究會 1974 圓佛敎學硏究 Vol.6 No.-

황금(黃芩)의 4-VO로 유발한 흰쥐뇌허혈에 대한 신경방어효과

李秉哲,林康鉉,金榮玉,金善礪,安德均,朴虎君,金護哲 대한본초학회 1999 大韓本草學會誌 Vol.14 No.2

Scutellariae Radix(SR), the root of Scutellaria baicalensis G_EORGI, whose property, flavour and channel tropism is bitter in flavour, cold in property(寒), acting on the lung, gallbladder, stomach and large intestine channels(歸?,?,?,大??), has the effects of clearing away heat and dampness(淸熱??), purging fire, detoxicating(?火解?), stopping bleeding(止血) and preventing miscarriage(安?). This drug is one of the popular drugs in traditional Korean medicine, which has been used to antipyretic, antibacterial, antitoxic and antihypersensitive effects. So this study was planned to check the neuroprotective effect of SR on the global ischemia induced by 4-vessel occlusion in Wister rats. and SR extract was lyophilized after extraction with 70% methanol. We induced 4-vessel occlusion for 10 minutes and reperfused again. The number of CA1 pyramidal neurons were counted after 7 days of reperfusion under the cresyl violet staining. The result obtained that in 4-VO ischemia, SR showed significantly neuroprotective effects(1,000 and 500 ㎎/㎏ of SR extracts, p<0.05) compared with control group. Each neuroprotective ratio was about 27.4 %, 23.2 % respectively. Consequently, Scutellariae Radix has neuroprotective effects on the global ischemia induced by 4-vessel occlusion in Wistar rats.