Pb가 첨가된 Bi-Sr-Ca-Cu-O 세라믹에서 고온상의 성장

朴龍弼 東新大學校 工業技術硏究所 1994 工業技術硏究 Vol.1 No.-

The growth of high-Tc phase have been studied in Pb-added Bi-Sr-Ca-Cu-O Ceramics. The low-Tc phase formed in early sintering state reacts on Ca₂PbO₄, Ca₂CuO₃ and CuO during sintering process and thus produces the high-Tc phase. A long sintering period is need to fabricate the superconductor with large volume fraction of high-Tc phase. Also, the thin plate-like grains composed of Bi, Sr, Ca and Cu contribute to high-Tc phase formation. Though the sample has lower volume fraction of high-Tc phase, the critical temperature is measured highly in case of the grain grown to plate-like shape. In this work, the critical temperature of the sample sintered for 264 hr in air was measured 108 K.

공증착으로 제작한 BSCCO 박막의 부착계수 특성

박용필 東新大學校 工業技術硏究所 2001 工業技術硏究 Vol.7 No.-

BSCCO thin films are fabricated via a co-deposition process by an ion beam sputtering with an ultra-low growth rate, and sticking coefficients of the respective elements are evaluated. The sticking coefficient of Bi element exhibits a characteristic temperature dependence : almost a constant value of 0.49 below 730 ℃ and decreases linearly with temperature over 730 ℃. This temperature dependence can be elucidated from the evaporation and sublimation rates of bismuth oxide, Bi₂O₃, from the film surface. It is considered that the liquid phase of the bismuth oxide plays an important role in the Bi 2212 phase formation in the co-deposition process.

케일녹즙이 고콜레스테롤식이 흰쥐의 혈청 및 간장의 지질성분에 미치는 영향

박필숙,강진순,정승용,박재옥,김행자 慶尙大學校 1987 論文集 Vol.26 No.1

체중 60~65㎏의 wistar계 숫쥐에게 cholesterol 무첨가식이에 물과 kale 녹즙을 각각 급여하여 혈청중 총 cholesterol 농도, HDL-cholesterol 농도, 간장중의 총 cholesterol 농도, 혈청 및 간장중의 TG와 PL의 농도 그리고 과산화지질 농도를 측정하여 다음과 같은 결과를 얻었다. 1) 혈청중 총 cholesterol 농도는 cholesterol 무첨가식이군인 1,2군산 cholesterol 첨가이식군인 3,4, 5군간에서 각각 유의성이 없었다. HDL-cholesterol 농도는 cholesterol 무첨가식이군인 1,2군과cholesterol 첨가이식이군인 3,4,5군에서 kale 녹즙을 급여한 군이 유의적으로 높았다. 2)혈청의 중성지방농도는 전 군간에 유의성은 없으나 물ㅇㄹ 급여한 군보다 kale 녹즙을급여한 군에 있어 약간 낮은 경향이었다. 혈청의 인지질 농도는 cholesterol 무첨가식이군 및 cholesterol 첨가이식군 모두 물을 급여한 군보다 kale 녹즙을 급여한 군이 유의적으로 높았다. 3)간장의 총 cholesterol 농도는 cholesterol 첨가식이군에 있어 물을 급여한 군이 약간 낮은 경향이었다. 4)간장의 중성지방농도는 cholesterol 무첨가식이군에 비해 cholesterol 첨가이식군인 3,4,5군이 유의적으로 높았으며, 이들 군간에 있어서는 kale 녹즙혼액군이 비교적 낮았다. 간장 인지질농도는 cholesterol 첨가식이군인 3,4,5군간에 있어 kale 녹즙과 녹즙혼액을 급여한 3,4,군이 비교적 낮았다. 5)혈청 및 간장의 과산화지질농도는 cholesterol 첨가이식군인 3,4,5군이 무첨가식이군에 비해 대체로 낮았으며 또한 kale녹즙과 녹즙혼액을 급여한 군에 있어 유의적으로 낮았다. 이상의 결과로 보아 kale 녹즙의 섭취는 혈청 HDL-cholesterol 농도의 상승효과가 있고 간장 중 cholesterol 및 인지질의 농도를 다소나마 저하시키며 또한 혈청및 간장의 과산화지질농도의 지하작요이 있으므로서 혈청 및 간장의 지질개선효과가 있는 것으로 사료된다. The effect of kale juice, Brassica oleracea, on lpid components in serum and liver were investigated by feeding male rats of wistar for four weeks. And the concentrations of T-cholesterol,phospholipid, triglyceride and lipid peroxide in serum and liver were analysed along with the HDL-cholesterol concentration of serum . The results were as follows: 1)There was not found ny significant influence on the concentration of T-cholesterol in serum, butsome of relatively higher inluence but some of relatively higher influence on the HDL-cholesterol concentration. 2)For the group fed with 100% kale juice the concentration of triglyceride was shown lower than for any other groups, while that of phospholipid was shown higher. 3)The concentration T-cholesterol in liver was shown a little lower for the kale juice groups. 4)The concentration of triglyceride in liver was remarkably decreased in the 100% kale juice group in comparison with other groups, whiel the phospholipid concentraion was not. 5)Lipid peroxide values in serum and liver were relatively decreased in the kale juice groups compared to other group.

자폐장애 아동의 뇌자기공명영상 소견

박필상,정철호,최상용 대한소아청소년정신의학회 1997 소아청소년정신의학 Vol.8 No.1

BSCCO 시스템에서 초전도상의 특성

박용필,양승호,천민우 동신대학교 2005 論文集 Vol.15 No.-

BSCCO(Bi_(2)Sr_(2)Ca_(n-1)Cu_(n)O_(x)) 초전도 상을 이온 빔 스퍼터와 단일 타겟 DC-magnetron 스퍼터를 사용하여 제작하였다. 상형성은 n=2-3, 3-4 그리고 4-5 사이에서 이루어졌다. 스퍼터링 시 분위기 가스로 산소를 주입 하였고 제작된 박막의 상의 몰 비를 XRD를 이용하여 분석하였다. 각 상의 몰 비를 이용하여 초전도박막의 특성을 변화시킬 수 있음을 알았다. 또한, 각 상을 AFM과 SEM을 사용하여 박막의 표면을 관찰하여 표면의 불순물 상태를 알 수 있었다. BSCCO(Bi_(2)Sr_(2)Ca_(n-1)Cu_(n)O_(x)) superconducting phase were fabricated by an ion beam sputtering and single target dc-magnetron sputtering. Phase intergrowth among n=2-3, 3-4 and 4-5 phases was observed. The molar fraction of each phase in the mixed crystal of the deposited films was determined by X-ray diffraction analyses and investigated as a function of O_(2) gas pressure during sputtering. We investigated the changes of the superconducting properties by molar fraction of each phase. Also, the thin film surface observation was carried out by AFM. According to the result observing the surface of the thin film with SEM, even in case that the formed phase and the composition of the thin film agree, it can be known that there are a number of the precipitates on the surface.

스포츠 참가형태와 여가만족의 관계

박성계,안영필 東亞大學校附設스포츠科學硏究所 1996 스포츠科學硏究論文集 Vol.14 No.-

The purpose of this study was to analyze state and examine the relationship between paticipation state in sports and leisure satisfaction. This study was to examine the effects of participation duration in sports, participation frequency in sports, participation of sports club on leisure satisfaction by comparing the difference of psychological, educational, social, relaxational, physiological, and environmental satisfaction. Subjects of this study were sampled from 385 adults who lived in Pusan and the data were collected from a self-administrated questionnaires. The data were analyzed through analysis of variance(ANOVA) and multiple classification analysis(MCA). The findings obtained from this study were followings. First, the participation duration in sports has a influence on the psychological, relaxational, and physiological satisfaction but has no influence on the educational, social, and environmental satisfaction. Second, the frequency of sports participation has a influence on the leisure satisfaction. That is, there is difference in psychological, educational, social, relaxational, physiological, and environmental satisfaction according to the frequency of sports participation. Third, the participation of sports club has a influence on the leisure satisfaction. That is, there is difference in psychological, educational, social, relaxational, physiological, and environmental satisfaction according to the participation and non participation of sports club.

위삼차신경핵에서 일차구심성 신경섬유 종말부의 미세구조 및 연접양상

배용철,박국필,정경원,박매자,조희중 대한해부학회 1995 Anatomy & Cell Biology Vol.28 No.5

기동경찰체포술에 대한 연구

전용선;박종필 경찰대학교 2010 경찰학연구 Vol.10 No.2

When it comes to rallies and demonstrations in our country, illegal and violent demonstrations still take place, which takes a huge toll on our society. The first step of strict law enforcement by the police is arresting illegal demonstrators. Since riot police was founded in 2008, the arrest tactics of riot police has been considered important in terms of assembly and demonstration control. There are some suggestions on how to step up the development of riot police arrest tactics: First, ideal arrest tactics should be provided. It's not advisable for riot police units to employ different tactics since there are many influential factors on the spot. Field applicability is the top priority of ideal arrest tactics, and the kinds of arrest tactics that are used only for exhibitionism should be eliminated. Second, riot police units should be divided into two in order to make use of the drill manual of arrest tactics developed by the riot police headquarters of Seoul Metropolitan Police Agency. One group of units should maintain the basic formation, and the other group of units should exclusively be responsible for arrest. That will make it possible to utilize the drill manual without giving a change to the formation. Third, the arrest tactics that include a variety of motions are less usable on the spot. Therefore guidelines about basic motions should be presented, and professional police officers who will make research in the safety of arrest tactics should be nurtured. Fourth, arrest and apprehension are not the same terms, but they are still used together. This phenomenon should be redressed to ensure the right law enforcement. Apprehension is of realistic concept and denotes temporary detention (the decision of the Supreme Court dated August 22, 2000, No. 2000C3675). So that is comprehensive of both restraint(Article 6 of the police job performance act) and arrest of the criminal procedure law. As a consequence, whether the term apprehension means restraint or arrest is not clear when it is used, and it's valid to use the term arrest.

철도 차량의 동적 안정성에 관한 연구

홍용기,유원희,박영필,박해성 연세대학교 산업기술연구소 1991 논문집 Vol.23 No.1

The object of this study is to analyze the dynamic characteristic of lateral damper for the railway vehicle. The vibration characteristics are studied from eigenvalue analysis for critical velocity, and frequency analysis for the effects of the damper. Critical velocity of the model passenger car is found to be a) 20 m/s for damping force of 0 kg s/m, b) 64 m/s for damping force of 1,500 kg s/m, c) 60∼74 m/s for damping force of 730∼2,500 kg s/m. In high speed running, damping force should be decreased for high critical velocity. Lateral damping force should be greater than 730 kg s/m for stable running.

말쥐치기름 및 들깨기름의 攝取가 高콜레스테롤 食餌 흰쥐의 血淸 및 肝臟의 脂質成分에 미치는 影響

鄭承鏞,朴畢淑,徐孟姬,姜晋順,禹靜淑 慶尙大學校 1985 論文集 Vol.24 No.1

Hypercholesterolemic male rats of Sprague Dawley, divided into six groups, were fed for 3 weeks with the diets containing several different oils of 10,0, the mixtures of 5% perilla oil and 5% other oils. The concentration of the lipid peroxide, T-cholesterol, phospholipid and triglyceride in the serum and liver were measured along with the HDL-cholesterol concentration of the serum. The results were as follows: 1. The concentration of LPO in the serum of the rats fed with lO% perilla oil, with 5% perilla oil+5% lard and with 5% perilla oil+5% file fish oil was higher than those with any other oils. The concentration of that was significantaly high in the liver of the rats fed with 10% perilia oil, while it was considerably low with 10% olive oil. 2. The concentration of T-cholesterol in the serum of the rats fed with 10% perilla oil, with 10% file fish oil and with 5% perilla oil+5% file fish oil was lower than those with any other oils. 3. The concentration of HDL-cholesterol was low in the serum of the rats fed with 10% perilla oil, while it was high with 5% perilla oil+5% file fish oil and with 10% file fish oil. The concen tration of that for the T-cholesterol in the serum of the rats fed with 10% file fish oil and with 5% perilla oil+5% file fish oil was much higher than those with any other oils. 4. The concentration of T-cholesterol in the liver of the rats fed with 10% perilla oil was high, while it was low with 10f file fish oil and with any other oils. 5. The concentration of PL and TG in the serum of the rats fed with 10% perilla oil and with 10% file fish oil was lower than those with any other oils, but it was lower in the liver of the rats fed with 10% perilla oil than the mixtures of perilla oil and with 10% file fish oil.