마이크로 프레스에 의한 미세 펀칭 홀의 디버링 특성

윤종학,안병운,박성준 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.3

In micro hole punching process the burr occurs inevitably, but the burr must be minimized in order to improve the quality 1 and accuracy of the product. In this study, magnetic field-assisted polishing technique is applied to remove the burr which exists in nozzles for ink-jet printer head and proved to be a feasible for deburring by experiment. The deburring characterisics of sheet metals was investigated changing with polishing time and magnetic abrasive size. After the deburring, the burr size has remarkably reduced and roundness of the hole also has improved.

명상음악의 이완 효과 및 좌우 반구 비대칭성 연구

윤병수,안신호 심리과학연구소 2000 심리과학연구 Vol.1 No.-

EEGs were recorded four times each for one minute when ten participants both took a rest and listened to music. They opened and closed their eyes twice for each situation. Differences for relaxation effects between rest and music periods were not found from the index of α log power. Closing eyes increased the relaxation effects from the index of α log power. β log power indexes showed that β wave (especially in the left hemisphere) increased when listening to music while closing their eyes. 피험자 10명(남5, 여5)을 대상으로 이완을 위한 명상음악이 좌우 반구의 비대칭성을 유발하는지, 그리고 명상음악이 일반적인 이완 반응 이상의 효과를 내는지, 또한 그 효과는 눈의 개폐에 따라 차이가 있는지를 EEG측정을 통해 확인하고자 하였다. EEG측정은 이완 상황과 음악을 듣는 상황에서 각각 측정되었다. 각 상황에서 1분마다 눈의 개폐가 두 번 반복되는 동안 EEG를 측정하여 각 상황마다 1분씩 4번 4분간 측정하게 되어 전체 측정은 8번으로 8분간 측정하였다. a 로그 파워 지표에 있어서, 이완 상황과 명상음악 상황간의 이완 효과의 차이는 발견되지 않았다. 이완 상황과 명상음악 상황 모두에서 눈을 뜨고 있을 때보다 눈을 감고 있을 때 a 로그 파워 시표상의 이완 효과가 더 컸다. B 로그 파워 지표에 있어서는, 이완 상황시 눈 뜸/감음간의 차이는 없지만, 명상음악 상황에서는 눈을 감고 있을 때의 활성화 정도가 높으면, 그 현상은 좌반구에서 더 뚜렷했다. 뇌파의 활성화라는 물리적 지표 이외에 그 당시 어떤 감정 상태이었는지도 고려할 필요성이 있음을 강조하고, 이러한 맥락 속에서 결과를 해석하였으며, 후속 연구의 방향을 논의하였다.

신손상 환자의 치료에 따른 임상적 고찰

윤종선,소영석,안병수,노준,박도영 조선의대 1995 The Medical Journal of Chosun University Vol.20 No.2

小靑龍湯이 呼吸 循環 및 摘出腸管에 미치는 影響

安徹,蔡炳允 慶熙大學校 1986 論文集 Vol.15 No.-

In order to evaluate the relationship between the bibliographical and clinical effectiveness of Socheongryoungtang, this study was carried out to investigate the effects of Socheongryoungtang on the respiratory system, cardiovascular system and isolated organ in the experimental animals. The following results of Socheongryoungtang were obtained: 1. The inhibitory effect on gastric ulcer induced by histamine. 2HCl was noted in rat. 2. The inhibitory effect on vascular permeability was revealed in mice. 3. The effect of expectorant was recognized in rabbit. 4. The relaxing effect on the muscular contraction of isolated ileum induced by acetylcholine chloride, barium chloride and histamine. 2HCl was recognized in mice, rat and guinea-pig. 5. The effect of direct vasodilatation was noted in rabbit. 6. The effect of hypotensor was recognized in rabbit. 7. The antihistamine effect was noted on both isolated ileum arid tracheal strip-chain in guinea pig. 8 The antitussive effect was recognized in both dog and cat. According to the above results, we has recognized that Socheongryoungtang has good efficacy for bibliographical and clinical diseases caused from respiratory system (especially allergic rhinitis etc.), cardiovascular system and digestive system.

DCV시스템에 있어서 댐퍼개폐율에 따른 풍량제어특성 평가연구

윤동원,안병욱 대한건축학회 2004 대한건축학회논문집 Vol.20 No.9

Ventilation is important for the health and comfort of building occupants it is necessary to dilute and remove pollutants emitted from indoor source such as those derived from metabolism and from the activities of occupants Demand Controlled Ventilation system (DCV system) is possible to calculate the ventilation requirements to prevent pollutants from exceeding the threshold concentration level Also, the system can provides the ventilation rates automatically by means of motor damper and maintain indoor mr quality under the setting concentration level with response to variations of the pollutant levels Existing DCV system is being controlled by the stroke of damper blade But, ventilation rate is not proportional to the stroke ratio of damper blade Therefore, the control characteristics of damper is required for the proper control of ventilation rate in this study, the experimental ventilation system for the DCV control is established to figure out the control characteristics of damper blade After measurement of various experimental cases according to the stroke ratio of damper blade, logical concepts of the stroke ratio for the DCV system is suggested to provide the appropriate ventilation and to ensure the good indoor air quality

관상동맥내 스텐트 시술시 Aspirin과 Cilostazol 2개월 병합요법

윤명호,탁승제,염철훈,장혁재,최소연,유상용,안성균,고종훈,신준한,김한수,최병일 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

Selective Nitration에 의한 3-Phenyl-4-(p-aminophenyl) Sydnone의 합성

안찬묵,윤병희,유학수 연세대학교 자연과학연구소 1986 學術論文集 Vol.16 No.-

3,4-Diphenylsydnone에 조건을 변화시켜가면서 니트로화반응을 시켰다. 반응은 4위치의 phenyl에서만 일어났으며, CH_3COOH-HNO_3조건하에서는 para에 그리고 H_2SO_4-HNO_3조건하에서는 ortho와 para에 진행하여 각각 니트로화합물을 얻었다. 생물학적으로 활성을 갖을 것으로 기대되는 아미노기를 갖는 sydnone유도체를 얻기 위하여, 이 니트로화합물을 Fe와 2%초산수용액에 의해 환원시켰다. 이들 생성물의 확인은 IR과 NMR로 검토하였으며 원소분석으로 확정지었다. Nitration of 3,4-diphenylsydnone was examined under various conditions. Reaction took place only at phenyl which was at 4-position of sydnone ring, and it was found that para-substituent was obtained under CH_3COOH-HNO_3 condition, whereas under H_2SO_4-HNO_3 condition ortho-and para-substituent was obtained. In order to obtain amino group containing sydnone derivative which was expected to be biologically active, this nitro compound was reduced by iron and 2% aqueous acetic acid. The products thus obtained were identified by IR and NMR spectroscopy and confirmed by elemental analysis.

직업적 연폭로가 일부 신경행동학적 검사수행에 미치는 영향

안익수,안현철,김용배,리갑수,김화성,황규윤,최은,장봉기,이성수,안규동,이병국 순천향대학교 산업의학연구소 1999 순천향산업의학 Vol.5 No.1

In order to investigate that blood lead levels of lead exposed workers is associated with decreased performance in neurobehavioral tests in adults, we investigate 78 workers in a battery industry. Three items among neurobehavioral core test battery of World Health Organization, including digit span, Santa ana dexterity, digit symbol were administered to workers occupationally lead exposed workers by operational guide for the WHO neurobehavioral core test battery. Blood lead (PbB) and zinc protoporphyrin in whole blood (ZZP) were selected as an index of lead exposure. Detailed occupational history such as exposed agent, age, work duration, smoking and drinking habits, were recorded as confounding factors. After controlling age, the results of digit span and digit symbol among the neurobehavioral tests were significant contributed by PbB.

한국판-적응행동검사(K-ABI)의 표준화 예비연구(Ⅰ) : A Preliminary Study(Ⅰ)

안병환,윤치연,천성문 한국동서정신과학회 2001 동서정신과학 Vol.4 No.2

본 연구는 Brown과 Leigh가 개발한 Adaptive Behavior Inventory(ABI)의 한국판 표준화를 위한 예비연구로서, 본 검사의 신뢰도와 타당도를 검증함으로써 그 유용성을 입증하고자 하였다. 정신지체학생 124명과 정상학생 82명을 대상으로 교사로 하여금 5개 하위척도(자조능력, 의사소통능력, 사회능력, 학업능력, 작업능력)에 4점 척도로 평정하도록 하였다. 신뢰도를 알아보기 위하여 먼저 내적 일치도(Cronbach' α)를 산출하였는데, 정신지체집단에서는 .85~.93이었고, 정상집단에서는 .89~.94로 모두 통계적으로 유의미하였다(p<.05). 검사-재검사는 정신지체집단에서 .88~.91이었고, 정상집단에서 .88~.92로 모두 통계적으로 유의미하였다(p<.01). 한편, 교사의 전문적 판단과 각 하위척도와의 준거관련타당도는 정신지체집단에서 .71~.78이었고, 정상집단에서 .72~.81로 나타나 비교적 높은 정적 상관을 보였으며, 사회성숙도와 각 하위척도와의 피어슨 적률상관계수는 정신지체집단에서 .39~.47이었고, 정상집단에서 .38~.45로 만족할만한 수준으로 나타났다. 또 구성타당도는 각 하위척도들간의 상호상관계수가 정신지체집단에서 .51~.75이었고, 정상집단에서 .61~.80으로 나타나 모두 통계적으로 유의미하였다(p<.05). 본 연구에서 나타난 결과를 종합해 볼 때, 이 적응행동검사는 정신지체집단과 정상집단 모두의 적응행동을 평가할 수 있는 유용한 도구가 될 수 있음을 시사해 준다. This study was preliminarily executed to develop the Korean Version of ABI(Adaptive Behavior Inventory) for identifying the abilities of self-help, communication, social interaction, academic tasks, and occupation tasks.Subjects were 124 students with mental retardation and 91 normal students. The internal consistency of the items on the Korean Version of ABI was investigated using Cronbach's α. The coefficient alpha for the subtests ranged from .85 to .93 in MR students, .89~.94 in normal students and were statistically significant(p<.05). Also, test-retest correlation coefficients ranged .88~.91 in MR students, .88~.92 in normal students, and were statistically significant(p<.01). In addition, criterion-reference validity coefficients for teacher's judgement and subtests ranged .70~.78 in MR students, .72~.81 in normal students and were highly correlated. In Social Maturity Scale and subtests,the Pearson product-moment coefficients of correlation ranged .38~.47 in MR students, .38~.45 in normal students and were accepted statistically significant. Also, construct validity coefficients ranged .51~.75 in MR students, .63~.80 in normal students and were statistically significant(p<.05). As a result, this study suggest the scale can be used for identifyingthe abilities of social adaptation of persons with mental retardation and other disabilities.

선박용 엔진 모니터링을 위한 CSMA/CD 프로토콜

안병원,김현수,윤경국 木浦海洋大學校 1998 論文集 Vol.6 No.1

This study is on the development of a monitoring system which can be applied for not only large vessels but also small vessels less than 20 gross tonnage. The Monitoring system consists of many LMU(Local Monitoring Unit)s that collect data from local machinery, a host computer that controls LMU and a stable communication system. In this paper, the industrial computer is used as host computer and that is compotable to IBM PC. GUI(Graphic User Interface) for main program is constructed by the use of HANGUL library and BOLAND C??, so this software package is easy to access to beginners. The LMU is made up from 80C196KC, which consists of CPU, interface, digital input/output, analog input/output and communication. Communication system between the host computer and LMUs is the multidrop configuration using RS-485 method. One master device of industrial computer has the role of host computer and LMUs acts as slave devices. And, more efficient communication system is practicable by the aid of polling method as well as carrier sense multiple access with collision detection(CSMA/CD) protocol.