• 제목/요약/키워드: ob/ob

검색결과 846건 처리시간 0.028초

목재 기반 소재의 연소생성물 노출 실험을 통한 독성요인 분석 (Toxicity Factor Analysis through the Exposure Experiment of the Combustion Products on Wood-Based Materials)

  • 김남균;박정호;조남욱
    • 한국화재소방학회논문지
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    • 제30권6호
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    • pp.57-63
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    • 2016
  • 본 연구에서는 목재 기반 소재(MDF, OSB)의 연소생성물의 독성을 동물실험 기법을 사용하여 분석하였다. 실험용 쥐의 평균행동정지시간은 MDF가 OSB에 비해 짧았다. 이는 MDF 연소생성물의 독성이 OBS보다 높음을 의미한다. 해당 결과의 요인을 정량적으로 분석하기 위해 FT-IR을 통한 가스상 물질 분석을 수행하였다. 정성분석 결과 CO와 $CO_2$가 발생됨을 확인하였으며, 정량분석 결과 가스발생량은 OSB가 MDF보다 높음을 확인하였다. 또한 실험 후 실험용 쥐의 혈액분석 결과 OSB가 MDF에 비해 COHb 농도가 높음으로써, 가스상 물질의 발생량과 COHb 농도가 상관성이 있음을 확인하였다. 현재 재료의 연소생성물 독성 분석은 독성지수 Fractional Effective Dose (FED)를 통해 이루어지고 있다. FED는 독성가스 발생량을 기반으로 하고 있으며, 노출 물질의 독성이 높을수록 평균행동정지시간은 짧아진다. 하지만 본 연구 결과에서는 OSB가 MDF에 비하여 CO 발생량은 186.5%, COHb는 > 129.6% 임에도 불구하고 평균행동 정지시간이 51초가량 길게 나타남을 확인함으로써, 연소생성물 중 가스상 물질 이외의 추가적인 독성 요인에 대한 연구가 요구됨을 확인하였다.

갱년 및 폐경 후 여성의 안면홍조에 대한 침 치료 다기관 임상연구 : 수행보고 및 방법론적 교훈 (Methodologic Lessons Learned from Multicenter, Randomized, Controlled Clinical Trial of Acupuncture for Hot Flashes in Peri- and Postmenopausal Women)

  • 김건형;김동일;황덕상;이진무;김형준;윤현민;정희정;강경원;이명수;최선미
    • 대한한방부인과학회지
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    • 제23권1호
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    • pp.42-52
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    • 2010
  • Purpose: This report aims to administer methodologic issues around recently conducted multicenter study for evaluating the effects of acupuncture on menopusal hot flashes and discuss practical issues for further implementation of acupuncture clinical trial for hot flashes. Methods: Study process were mentioned, and issues related to avoiding risk of bias, designing appropriate control group, optimal outcome measurement, potential different effects of menopausal status on study outcomes, and suggestions for developing future clinical trials are discussed. Results: Shortcomings of our multicenter study include lack of allocation concealment and assessor blinding, subjective outcome measurement, short-term follow-up, and fixed acupuncture regimen despite pragmatic purpose of this study. Improving trial design, using objective or validated outcomes, assessing long-term effects of acupuncture, and individualizing acupuncture regimen are needed in future clinical trials. Conclusion: We expect these practical discussions to enable researchers to plan and develop future well-designed clinical trials for evaluating the effects of acupuncture on hot flashes or other women's health issues.

긍정적 사고가 운동 수행 능력의 향상과 불안조절에 미치는 영향 (The Effect of Positive Feedback and Reinforcement on the Enhancement of Performance and the Regulation of Anxiety)

  • 한덕현;조규현;민경준;나철
    • 정신신체의학
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    • 제15권2호
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    • pp.107-112
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    • 2007
  • 서론 : 긍정적 사고는 수행능력에 많은 영향을 끼친다. 기질적 특성 중 위험 회피는 불안과 관련된 행동에 많은 영향을 끼친다. 여러 종목의 스포츠 중, 골프 선수는 다른 종목의 선수에 비해 높은 불안 수준과 낮은 위험회피기질을 보이고 있다. 따라서, 골프선수에서 긍정적 보상과 강화가 불안을 감소시키며 인간 행동 수행능력을 향상시키는 것을 알아보았다. 방법 : 15~19세의 51명의 골프 선수 중, 25명은 Zinsser의 긍정적 사고전환을 응용한 레슨과 Beswick가 제시한 긍정적 자기 말을 사용하였다(P-FB), 26명은 일반적 훈련 법을 따랐다. 위험회피(Harm avoidance), Spielberg's Trait and State Anxiety, 골프점수(드라이브 거리 및 OB 횟수, 아연 샷 횟수, 퍼팅 횟수) 등을 훈련법 전과 6개월 뒤에 조사하였다. 결과 : 훈련 법 전에 조사한 위험회피, 불안 수준, 그리고 골프점수에서는 두 그룹에서 차이가 없었다. 6개월 뒤, 양군 모두에서 전반적 골프점수는 향상을 보였다. 하지만 P-FB 군이 대조군에 비해 종합 점수와 퍼팅 횟수가 더욱 감소하였다. P-FB 군이 상태불안(State Anxiety)의 감소를 보인 반면 대조군에서는 상태불안의 변화가 없었다. P-FB 군에서 위험회피 점수는 상태불안과, 상태불안은 종합점수의 감소와 관련이 있었다. 결론 : 긍정적 보상과 강화는 행동 수행 능력과 상태불안을 향상시키며, 행동 수행 능력과 불안의 향상은 높은 위험 회피의 기질적 특성을 가지고 있는 골프선수에게 특히 도움이 되었다. 본 연구는 높은 위험회피를 가지고 있는 사람에서 긍정적 사고를 통한 불안의 조절이 수행능력의 향상에 직접적 도움이 됨을 알 수 있었다.

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알코올성 간질환 변증 설문, DSOM, SF-36을 이용한 알코올성 간질환 환자의 금주 효과 연구 (Effect of Stopping Drinking, Using Alcoholic Liver Disease Questionnaire, DSOM and SF-36)

  • 이재왕;홍상훈;박상은;손호영;김도경;이승연;이수영;김보경;강창완;이인선
    • 대한한방내과학회지
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    • 제31권2호
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    • pp.356-364
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    • 2010
  • Objectives : This study was done to evaluate the effect of stopping drinking, using alcoholic liver disease questionnaire, Diagnosis System of Oriental Medicine (DSOM) and Health Related Quality of Life (HRQOL). Methods : 49 men who satisfied the requirement participated in this trial. They stopped drinking for 6 weeks. They were analyzed using DSOM, alcoholic liver disease questionnaire and SF-36. The data were classified by age (<47,$\geq$48) and alcoholic intake per day (<100g,$\geq$100g). For HRQOL, the SF-36v2 Health Survey was used and Quality Metric Health Outcomes Scoring Software 2.0 (QualityMetric, Lincoln, RI, USA) was applied for the analysis. Results : The alcoholic liver disease questionnaire had a partial correlation with DSOM. Generally stopping drinking decreased Heat (熱). Especially in the group drinking over 100g per day, the correlation was high. In the group over 48 years old, spleen (脾) was improved comparatively. In the group with low HRQOL (PCS<31.43, MCS<23.33) deficiency (虛) was improved. Conclusions : We found that stopping drinking can improve pathogenic factors of alcoholic liver disease and the alcoholic liver disease questionnaire be a useful diagnostic method on alcoholic liver disease by comparison with DSOM.

침전극저주파 자극이 해마의 세포사 차단에 미치는 영향 (The Effects of Needle Electrode Electrical Stimulation on Cellular Necrosis Blocking the Hippocampus after Induction of Ischemia)

  • 이정숙;김병기;김성원;김지성;김동일;송치원
    • 동의신경정신과학회지
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    • 제20권2호
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    • pp.111-120
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    • 2009
  • Objectives : This study was performed to investigate the effects of Needle Electrode Electrical Stimulation (NEES) on ischemia-induced cerebrovascular accidents. After obstruction and reperfusion of ${\ast}{\ast}$ arteries in white mice, the amounts of necrosis and inflammation related substances IL-6, Caspase-3, and PARP, C-fos were measured in neurons of the hippocampus. The following results were obtained. Methods : This study used 21 male specific pathogen free (SPF) SD (Sprague Dawley) rats, 8 weeks of age and approximately 300 g in weight, that were given at least 1 week to adapt to the lab environment Each exposed artery was completely occluded with non-absorbent suture thread and kept in that state for 5 minutes. The sutures were then removed to allow reperfusion of blood. Test group is control group for comparison with the common carotid artery occlusion models, a GI group that underwent common carotid artery occlusion, and a needle electrode electrical stimulation (NEES) group that underwent NEES after artery occlusion. The GI and NEES groups were given 12, 24, or 48 hours of reperfusion before NEES. NEES device (PG6, ITO, Japan, 9V, current, 2Hz) was used to stimulate the right and left acupoint ST36 of the SD rats for 30 minutes while they were sedated with 3% isoflurane. An immunohistochemistry test was done on the forebrains of the GI induced rats. All the data collected from this study was symbolized and analyzed using a statistics processing program (SPSS 12.0K/PC). The level of significance was set at ${\alpha}$=0.05 and a T-TEST analysis was used to find out the effects of treatment on each of the groups: the normal group, the CVA induced group, and the treatment after CVA induction group. Results : Both PARP and C-fos immuno-reactive cells, related to apoptosis, were greater in the GI groups than the NEES group. Caspase and IL-6 immuno-reactive cells, related to inflammation, were greater in the GI and NEES groups than the control group. Conclusions : This research was conducted to study the effects of NEES on CVA due to ischemia. Occlusion and reperfusion was performed on the common carotid arteries of white rats, after which amounts of substances related to neuron necrosis and inflammation - PARP, IL-6, Caspase-3, and C-fos - were measured in the Hippocampus

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N-아실-α-아미노숙신이미드와 N-아실-α-아미노글루탈이미드의 합성 (Synthesis of N-acyl-α-aminosuccinimides and N-acyl-α-aminoglutarimides)

  • 정대일;김문주;송현애;김윤영;이용균;박유미;최순규;한정태;박민수
    • 생명과학회지
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    • 제14권1호
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    • pp.91-97
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    • 2004
  • 앞선 연구의 구조적 특성을 근거로 하여, 한 분자내에 MES 유발경련에 작용하는 cyclicimide의 구조를 포함하면, 그들의 구조가 경련 유발 수용체들에 상호 보완적으로 작용, MES및 PTZ유발 경련에 모두 작용할 수 있는 적용 범위가 넓은 항경련성 화합물이 될 수 있을 것으로 생각하여 N-acyl-$\alpha$-aminosuccinimide 1과 N-acyl-$\alpha$-aminoglutar- imide 2 유도체를 합성하였다. 먼저 (R)-2-benzyloxy carbonylamino-succinic acid 3을 출발 물질로 하여 N-acyl-a-aminosuccinimide 1 유도체인 (R)-Benzoic acid 4-benzyloxycarbonyl-amino-2-oxo-pyrrolidin-l-yl ester 6a, (R)4-nitro-benzoic acid 4-benzyloxycarbon-ylamino-2-oxo-pyrrolidin-1-yl ester 6b, (R)-4-nitro-benzoic acid 4-benzyloxycarbonylamino-2-oxo-pyrrolidin-1-yl ester 6c, 그리고 (R)-propionic acid 4-benzyloxycarbonylamino-2-oxo-pyrrolidin-1-yl ester 64를 합성하였다 또한 (R)-3-car-bobenzyloxy-aminoglutarrnic acid 7를 출발물질로 하여 N-acyl-$\alpha$-aminoglutarimide 2유도체인 (R)-(3-Benzyloxycarbonyl-amino-2,6-dioxo-piperidin-1-yloxy)-acetic acid methyl ester 10a, (R)-(3-benzyloxyarbonylamino-2,6-dioxo-piperidin-1-yloxy)-acetic acid ethyl ester l0b, 그리고 (R)-2-(3-benzylox-ycarbonylanino-2,6-dioxo-piperidin-1-yloxy)-propionic acid methyl ester l0c를 합성하였다. 합성된 화합물 6a, 6b, 6c, 6d, 10a, lOb, l0c에 대한 활성평가는 각 단계별 MES test와 PTZ test의 항경련 활성 시험 방법을 가지고 실험할 예정이다.

건축공정 관리시스템의 전산적용 최적화를 위한 시스템 개발 요구 분석 (An Analysis of a Request for the Development of Computer Application Technology in an Architectural Construction Management System)

  • 권춘안;지석원
    • 한국건축시공학회지
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    • 제11권6호
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    • pp.567-575
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    • 2011
  • 공정계획 전산 tool은 건설정보화의 발전에 따라 반드시 필요한 도구이나 이를 활용하기 위한 여건과 사용자의 이해가 부족한 것이 현실이다. 특히 현행 공정관리 정보화 시스템에 대한 실무자의 의견조사 결과가 부정적인 이유가 공정계획 이전의 관리기획단계 정보의 내용과 기술사항이 부재함에 따라 공정기획 전문가 이외는 접근의 어려움이 있는 것으로 분석되었으며 이에 공정관리 전산화의 최적화에 대한 사용자의 요구와 시스템의 개선방향을 고찰하였고 이를 통한 기존시스템의 단점 개선과 건설업에 특화된 전문시스템의 개발을 도모하고자 하였다. 이에 WBS, CBS를 통합한 '통합 WBS(IWBS)'의 구축 및 OBS와의 상호 연계(Link)를 위해서는 데이터의 호환성과 운용 정보의 통합기술이 무엇보다도 중요하다고 판단 되며, 프로젝트 단위(WBS level 1), 사업시설 단위(WBS level 2), 관리직능 단위(OBS level 1) 및 관리엔지니어 단위(OBS level 2)의 4단위 지수에 대한 데이터코딩을 통해 변화하는 공사정보 즉 공사량, 공사원가, 소요공기 그리고 관리부서로 정보의 일관성을 높이기 위한 전산시스템의 개발이 필요한 것으로 나타났다.

외국어로서 독일어 수업을 위한 기능문법의 필요성 (Die Notwendigkeit einer funktionalen Grammatik fur Deutsch als Fremdsprache)

  • 박현선
    • 한국독어학회지:독어학
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    • 제7집
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    • pp.237-256
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    • 2003
  • Das Deutsche als Fremdsprach hat sich als akademische Disziplin etabliert; es hat seine - von vielerlei Irrungen und Wirrungen begleitete - Startphase hinter sich und ist in eine Phase der Konsolidierung eingetreten. Bei aller Unterschiedlichkeit der $Ans\"{a}tze$, Forschungsmethoden und Lemziele gibt es doch eine Einheit in der Vielfalt, was angesichts der erst wenige ]ahrzehnte alten Disziplin erstaunt. Im Zentrum stehen nach allgemeiner Auffassung die Theorie und Praxis des Lehrens und Lernens/ Erwerbens des Deutschen als Fremdsprache; unterschidliche Auffassungen bestehen vor allem daruber, ob Deutsch als Fremdsprache ein germanistisches oder aber ein fremdsprachenphilologisches Fach sei. Unbestritten sind dagegen Fremdperspektive und $Interdisziplinarit\'{a}t$ der Disziplin rnit zahlreichen Beztigen zu Nachbarwissenschaften. Eine wesentliche Rolle in der Diskussion spielte stets die Rolle der Grammatik im fremdsprachlichen Deutschunterricht. Freilich hat die Diskussion ergeben, dass dieses in Wahrheit eine Scheinaltemative ist, die auf einer Reihe falscher Annahmen oder $Missverst\"{a}ndnissen$ beruht, vor allem jenen, im Unterricht komme es $ausschlie{\ss}lich$oder zurnindest vorrangig auf Fertigkeiten und Kommunikation an, nicht oder nur am Rande auf die Vermittlung sprachsystematischer Erkenntnisse. Durchgesetzt hat sich heute freilich die Erkenntnis, dass Grammatik, verstanden in diesem weiten Begriffssinn, aus dem Fremdsprachenunterricht nicht zu verbannen ist. Weiterhin $d\"{u}rfte$ Einvemehmen dariiber herrschen, dass Grammatik und Kommunikation keinen Gegensatz darstellen, vielmehr das Lernziel kommunikative Kompetenz die Beherrschung grammatischer Regeln einbezieht, wenn nicht voraussetzt. Der Funktionsbegriff ist umstritten. Der Oberbegriffe $f\"{u}r$ alle Funktionen $w\"{a}re$ Kommunikation. Fur unser Verstandnis einer funktionalen Grammatik fur Lemende des Deutschen als Fremsprache ist die entscheidende Frage, welche Funktion in der Kommunikation eine bestimmte Struktur spielt. Das Ziel oder der Zweck der kommunikativen Handlung steht im Mittelpunkt. Wir meinen, dass auch jenseits des deutschen Sprachraums Form und Funktion des sprachlichen Zeichens eine Einheit darstellen und im Unterricht nicht getrennt werden $k\"{o}nnen$. Zuerst lernen wir die Formen und Strukturen sprachlicher Mittel kennen, und danach werden wir sie praktisch an: Regelwissen, aber Versagen in der Kommunikation. Die Beispiele der sprachlichen $M\"{o}glichkeiten$ der Satzarten unter funktionalem Aspekt und des Ausdrucks der $Modalit\"{a}t$ im Deutschen machen die Notwendigkeit eines funktional-kommunikativen Ansatzes einer Grammatik fur Deutsch als Fremdsprache deutlich. Es belegt zugleich, dass - unter dem Primat des Didaktischen - die Grenze von Grammatik und Lexikon $\"{u}berwinden$ werden muss, um den Lemenden wirkliche $Erkl\"{a}rung$ und Lernhilfen zu bieten.

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THREE-SITE PHOTOMETRIC MONITORING OF THE δ SCT-TYPE PULSATING STAR V1162 ORIONIS : PERIOD CHANGE AND ITS IMPLICATIONS FOR PRE-MAIN SEQUENCE EVOLUTION

  • KIM, SEUNG-LEE;CHA, SANG-MOK;LIM, BEOMDU;LEE, JAE WOO;LEE, CHUNG-UK;LEE, YONGSEOK;KIM, DONG-JIN;LEE, DONG-JOO;KOO, JAE-RIM;HONG, KYEONGSOO;RYU, YOON-HYUN;PARK, BYEONG-GON
    • 천문학회지
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    • 제49권5호
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    • pp.199-208
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    • 2016
  • We present photometric results of the δ Sct star V1162 Ori, which is extensively monitored for a total of 49 nights from mid-December 2014 to early-March 2015. The observations are made with three KMTNet (Korea Microlensing Telescope Network) 1.6 m telescopes installed in Chile, South Africa, and Australia. Multiple frequency analysis is applied to the data and resulted in clear detection of seven frequencies without an alias problem: five known frequencies and two new ones with small amplitudes of 1.2-1.7 mmag. The amplitudes of all but one frequency are significantly different from previous results, confirming the existence of long-term amplitude changes. We examine the variations in pulsation timings of V1162 Ori for about 30 years by using the times of maximum light obtained from our data and collected from the literatures. The O − C (Observed minus Calculated) timing diagram shows a combination of a downward parabolic variation with a period decreasing rate of (1/P)dP/dt = −4.22 × 10−6 year−1 and a cyclic change with a period of about 2780 days. The most probable explanation for this cyclic variation is the light-travel-time effect caused by an unknown binary companion, which has a minimum mass of 0.69 M. V1162 Ori is the first δ Sct-type pulsating star of which the observed fast period decrease can be interpreted as an evolutionary effect of a pre-main sequence star, considering its membership of the Orion OB 1c association.

분만중 시행한 전신마사지가 신생아 아프가 점수, 분만경험 및 모아애착 반응에 미치는 효과 (The Effects of a Full Body Massage on Apgar Score, Postparturm Mother′s Childbirth Experience and Mother-Infant Attachment)

  • 이군자;장춘자;조현숙
    • Child Health Nursing Research
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    • 제9권4호
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    • pp.359-367
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    • 2003
  • Purpose: This study is designed to test the effects of a full body massage on Apgar score, postpartum mother's childbirth experience, and mother-infant attachment for primipara during labor. Method: Data were collected using a quasi-experiment method (nonequivalent control group, pre-post test design) from November 1, 2001 to July 31, 2002. The subjects for this experiment consist of 28 women in the experimental group and 29 in the control group, out of 57 primipara hospitalized at the U OB & GYN hospital in Inchon. A 20 minute full body massage was given to the experimental group on each of three delivery phases (latent, active, and transition), and a conventional delivery care to the control group. The experimental tools for the study are Apgar score scale developed by Apgar(1958), postpartum mother's childbirth experience scale developed by Marut and Mercer(1979), and mother-infant attachment scale developed by Cropley et al(1981). The data collected were analyzed using t-test, χ2 test, and ANCOVA on the SPSS program. Result: The results of the experiment are as follows: One minute(t=6.756, p=.000; F=9.181, p=.004), and five minute(t=6.129, p=.000; F=7.918, p=.007) Apgar score are increased significantly. Postpartum mother's childbirth experience is significantly increased(t=11.691, p=.000; F=11.741, p=.001). Verbal touch score(t=5.256, p=.000; F=7.169, p=.010), skin touch score(t=11.332, p=.000; F=27.073, p=.000), and total score(t=12.105, p=.000; F=30.104, p=.000) of postpartum mother's childbirth experience are significantly increased, but not for eye touch score(t=3.236, p=.002; F=.800, p=.375). Conclusion: This study shows that a full body massage has a significant positive effect on Apgar score, postpartum mother's childbirth experience. and mother-infant attachment. Therefore, it is suggested that the full body massage might be used clinically to help primipara during labor.

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