• 제목/요약/키워드: Anti-fire

검색결과 118건 처리시간 0.025초

이동표적에 대한 적중확률 (Hitting Probability on the Moving Target)

  • 오형재
    • 한국국방경영분석학회지
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    • 제1권1호
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    • pp.111-129
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    • 1975
  • U.S. Air Force Regulation 80-1 defines that a weapon system is composed of equipments, skills, and techniques, the composite of which ferns an instrument of combat. The complete weapon system includes all related facilities, equipments, materials, services, and personnels required for the operation of the system, so that the instrument of combat can be considered as a self-sufficient unit of striking power in its intended operational environment. Effectiveness of a weapon system can be expressed as a function of its liability, reliability and performance capability. Among these attributes which influence the weapon effectiveness, performance capability is considered to be the most critical factor for many weapon systems. In order to illustrate the application of the methodology of performance capability, a specific ease study on the effectiveness of Vulcan anti-air craft gun system is presented with special emphasis on hitting probability on moving targets, effects of artificial rounds dispersion, and several principles related to the deployment of the system. This thesis includes the thorough survey of the possibility of calculating the absolute value of hitting probability on moving targets, indicates that the effects of artificial rounds dispersion increase the value of probability only when the total number of rounds fired within fire range exceeds a certain critical number, and suggests that concentrated guns deployment is better than scattered deployment in order to obtain higher probability and lower average amount of rounds if it is assumed that the effects of counter-attack from enemy threats are not serious.

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Direct Observation on Pyrolysis of Some Plastics

  • Takasu, Tomio;Itou, Hideyuki;Shibata, Etsuro;Kasai, Eiki;Nakamura, Takashi
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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    • pp.742-745
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    • 2001
  • Plastics are one of difficult materials for recycling due to their characteristics in use. Recycling ratio of waste plastics was around 40% in last year in Japan, which includes energy recovery. Feed stock recycling and mechanical recycling are not easy because of additives in commercial plastics. Then, pyrolysis treatments have been done to recovery energy. Although plastics are easy to fire, complete combustion of them is not easy if anti-firing agents are added especially. Therefore, researches on pyrolysis or combustion behaviors of plastics containing additives are important from a view point recycling of plastics. Direct observation of popular plastics like polystyrene (PS), polycarbonate (PC), polyphenyle ether (PPE) and polyvinyl chloride (PVC) to investigate their pyrolysis behaviors in the present study. In case of PS, melting and gas evolution started at 9$0^{\circ}C$ and 39$0^{\circ}C$ respectively. And combustion finished at 445$^{\circ}C$. On the other hand, more than $600^{\circ}C$ and sufficient oxygen are required for complete combustion of PC and PPE.

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멀미의 병인(病因)에 대한 한의학적(韓醫學的) 접근(接近) (The Cause of Motion Sickness in Oriental Medicine)

  • 한윤정;장규태
    • 대한한방소아과학회지
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    • 제22권1호
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    • pp.149-162
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    • 2008
  • Objectives The purpose of this study is to investigate that causes of motion sickness in oriental medicine. Methods The internal and external studies about motion sickness were searched Results and Conclusions The motion sickness is induced by conflict of balance system including vestibular, visual and proprioceptive system. The motion sickness is more common in female and in children between 2 and 12 years old. In western medicine, antihistamine and anticholinergic has been used for treatment of motion sickness, but these anti-motion sickness drug turn out to be not a perfect solution and have several side effects. On the other hands, In oriental medical terminology, there is no words equivalent to the "motion sickness", but we consider the motion sickness as state with dizziness, nausea and vomiting. The motion sickness can be induced by either internal or external causes and the internal causes can thought to be a constitutional factor of an individuals, and the general transportation can be an external cause. The important internal cause is a dysfunction of the spleen, stomch(脾胃不調), retention of phlegm and fluids(痰飮), and deficiency of the kidney jing(腎精不足). The wind(風) and fire(火) in the upper part of the body, especially in the head, also can be an important cause of the motion sickness.

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고지방식이로 비만을 유발한 마우스의 알레르기 비염에 대한 방풍통성산(防風通聖散)의 효과 (The Effect of Bangpungtongsungsan on Allergic Rhinitis Of Obese Mouse Fed High Fat Diet.)

  • 김동현;홍승욱
    • 한방안이비인후피부과학회지
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    • 제29권1호
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    • pp.1-15
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    • 2016
  • Objective : For various reasons, Obesity & Rhinitis are constantly rising. So Interest of treatment has been expanding. We want to verify The Chungyeol (fire extinguishing) Lisup (Draining) effect of Bangpungtongsungsan on obese model of allergy rhinitis.Material and Methods : BALB/c mouse were divided four groups: control(CON), allergic induction(ARE), Bangpungtongsungsan extract administration(BTT), Bangpungtongsungsan double concentration extract administration (BT2T). Every group except control group were caused allergic rhinitis by Ovalbumin. BTT & BT2T were orally administered the Bangpungtongsungsan for 21days. Since then we observed the liver tissue cell and the nasal mucous membrane.Results : In comparison with ARE, experimental groups show relief of the nasal mucous membrane damage(secretion of mucus decrease, Itching decrease), Th2 eruption control(IL-4 decline), effect of anti-inflamatory(reducing TNF-α creation, decreasing of iNOS through NF-κB activation-inhibition). In addition, experimental groups show a loss in weight, diminished accumulation of fat. (decreasing within liver tissue, reducing TNF-α creation) BT2T is more effective to BTT.Conclusion : Bangpungtongsungsan treat obese model on allergy rhinitis thereby control fat augmentation, relieving inflammation.

대공화기 탄자비행시간 계산 기법 (A Computation Method for Time of Flight in the Anti-Aircraft Gun Fire Control System)

  • 김재훈;김의환;유석진;김성호
    • 정보처리학회논문지:컴퓨터 및 통신 시스템
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    • 제4권11호
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    • pp.361-368
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    • 2015
  • 대공화기사격통제장치에서 유효사거리는 정지한 표적에 대해 충분한 파괴력을 가질 수 있도록 탄속이 음속 이상을 유지하는 거리로 정의되고 있다. 접근하는 표적은 탄과 표적 간 상대속도가 증가하므로 실질적인 교전 사거리는 위의 유효사거리보다 더욱 연장된다. 그러나 기존에 제시된 TOF 계산식은 유효사거리 내에서만 정확하고 유효사거리를 벗어나면 정확하지 못하다. 본 논문은 교전사거리를 보장할 수 있도록 유효사거리 내에서와 유효사거리 밖에서도 충분한 정확도를 가진 실시간 처리가 가능한 탄자비행시간 계산 기법을 제시한다. 시뮬레이션을 통해 30미리 대공 탄에 대한 본 논문의 유용성을 보인다.

고주파 유도가열 장치를 이용한 알루미늄 박판 점착 복합방수시트 조인트부의 시공성 (Constructability of a Waterproofing Sheet Joint Combining an Aluminum Thin-film and Viscosity Layer Using a High-frequency Inductive Heating Apparatus)

  • 장상묵;김윤호;최성민
    • 한국건축시공학회지
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    • 제14권2호
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    • pp.163-169
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    • 2014
  • Engineers in the construction field have been using bonded waterproofing sheets in an attempt to resolve the imbalance in the quality, the risk of fire, safety of workers, and environmental pollution, as well as to eliminate separate use of organic adhesives on the surface of concrete. Recently, self-laminated waterproofing sheets have been developed. The purpose of this research is to find an appropriate processing speed according to the changes in physical properties, and visual observation of the waterproofing sheets laminated by the aluminum thin-film and viscosity layer that can be attached through self-adhesiveness on the surface of concrete and waterproofing sheets. Therefore, this research is conducted using a physical performance test. Based on the result of the test, when the high-frequency inductive heating apparatus was used, an improved adhesion and bonding stability effect were confirmed after the anti-hydrostatic pressure and bond strength in the temperature condition, and the surface observation in the processing speed condition.

대황목란탕(大黃牧丹湯)의 배오(配伍)분석과 그 약리활성 (Analysis for Compatibility of Daehwangmokdan-tang and Its Pharmacological Activities)

  • 김도회;윤미정;신순식
    • 대한한의학방제학회지
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    • 제26권1호
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    • pp.81-102
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    • 2018
  • Objectives : I analysed daehwangmokdan-tang's compatibility principle by the system of chief, deputy, assistant, and envoy and investigated pharmacological activities by categorizing with chemical components, molecular level, cellular level, animal level and human level based on Korean and Chinese studies for this formula. Methods : Daehwangmokdan-tang's compatibiltity principle was examined by the system of chief, deputy, assistant, and envoy. I looked into studies that presented in Korea from 1956 to 2016 about daehwangmokdan-tang through KOREA INSTITUTE OF ORIENTAL MEDICINE, Korean medicine information system (OASIS) and in Chinese for 20 years about daehwangmokdan-tang through China National Knowledge Infrastructure, CNKI. Then classify into chemical components, molecular level, cellular level, animal level and human level to analyse. Results : According to the system of chief, deputy, assistant, and envoy, chief herb is Rhei Radix et Rhizoma and Moutan Cortex, deputy herb is Natrii Sulfas and Persicae Semen, assistant and envoy herbs are Trichosanthis Semen. The amount of extraction of paeonol, total anthraquinone, and conjugated anthraquinone from daehwangmokdan-tang with the formulation of the system of chief, deputy, assistant, and envoy was the highest, and in the formulation of chief herb and deputy herb, the extraction amount of paeonol and conjugated anthraquinone was the lowest. With other formulations, the amount of extraction of total anthraquinone and conjugated anthraquinone was improved, although the degree was different. In particular, when it is blended with Persicae Semen as a deputy herb, the extraction amount of total anthraquinone and conjugated anthraquinone of Rhei Radix et Rhizoma as a chief herb is greatly increased, and the extraction amount of paeonol is rather different, but it is lowered. It was found that the amount of Mg Ca K Na in daehwangmokdan-tang was the highest. Pharmacological activities can be detected in inflammatory mediators and enzymes for molecular level. For cellular level, it can be determined in lipopolysaccharide (LPS)-stimulated RAW 264.7 cell line. In mouse and rats for animal level and human level, in inflammatory diseases (acute appendicitis, acute pancreatitis, acute cholecystitis, acute abdominal disease, ect.), pharmacological activities was caught. Conclusions : From the above results, daehwangmokdan-tang is composed in line with the system of chief, deputy, assistant, and envoy, suggesting that there is certain rationality and scientific. Pharmacological activities of daehwangmokdan-tang are effective to anti-inflammation, improvement of sepsis, analgesic, muscle relaxation, and improvement of intestinal flora and its metabolites. Daehwangmokdan-tang is consistent with the action of diuresis and anti-inflammation in terms of the content of elements, suggesting that there is action of purging fire and removing blood stasis, defecation detoxification, cooling blood and clearing heat and activating blood and dispersing stasis.

죽염의 특성 분석과 항위궤양효과 (Characterization and Anti-Gastric Ulcer Activity of Bamboo Salt)

  • 김승희;강석연;정기경;김태균;한형미;류항묵;문애리
    • 한국식품위생안전성학회지
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    • 제13권3호
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    • pp.252-257
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    • 1998
  • 죽염은 예로부터 위궤양 등의 소화기 질환에 민간요법으로 사용되어 왔으며 대나무 통속에 천일염을 넣고 소나무 장작불로 9번 구워서 만들어진다. 본 연구에서는 죽염의 특성분석시험과 항위궤양 시험 중 위산분비 억제도 시험을 실시하였다. 특성분석시험으로 ICP(Inductively Coupled Plasma) spectrometer, IC(Ion Chromatograph), XRD(X-ray Diffractrometer), 전자현미경을 이용하여 천일염과 죽염제품 A, B, C의 성분 및 구조분석을 실시하였다. 그 결과, 성분분석시험에서 죽염은 천일염에 비하여 칼륨, 규소, 철 및 인삼염의 농도가 증가하였으며 황산염은 감소되었음을 알 수 있었다. 죽염 중 물불용분에 포함된 화합물은 MgO가 가장 많았고, $SiO_2,\;Mg_2Si_O4\;및\;CaMgSiO_4$등도 확인되었다. 구조분석에서 죽염은 천일염에 비하여 대체로 표면이 매끄럽고 용융되어 있는 것으로 나타났다. 죽염제품 A, B, C 중 A를 사용하여 위산분비에 미치는 영향을 측정하였다. SD계 랫드에 죽염, 천일염, 시약급 NaCl, 증류수를 1일 1회 28일 동안 각 0.2, 1.0, 2.0 g/kg으로 경구 투여하여 마지막 투여 후 24시간 절식시켜 Shay 유문 결찰법을 이용하여 채취한 위액의 총량, pH, 총위산도, 펩신활성도를 측정하였다. 실험결과 각 투여 용량군에서 용매 대조군에 비하여 통계학적으로 유의성 있는 차이를 나타내지 않았으며 죽염을 포함한 여러 가지 염투여는 위산분비에 영향을 주지 않았다. 따라서 28일간 죽염투여에 의한 위궤양 치료효과는 기대하기 어려울 것으로 사료된다.

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단계(丹溪)의 학술사상(學術思想)이 한방부인과학(韓方婦人科學)에 미친 영향(影響)의 고찰(考察) (A Study of JuJinHyoung(朱震亨)'s Medical thoughts in Oriental Obstetric & Gynecology)

  • 윤종원;오규석;홍영욱;이태균
    • 동국한의학연구소논문집
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    • 제6권1호
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    • pp.205-229
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    • 1997
  • 금원사대가(金元四大家) 중의 한 사람인 주진형(朱震亨)은 주화론(主火論)의 영향을 받았지만 독창적인 "상화론(相火論)"과 "음부족이양유여(陰不足而陽有餘)"하다는 견해를 밝히면서 보음정이억상화(補陰精而抑相火)를 위주로한 치법(治法)을 제창하여 후대(後代)에 "자음파(滋陰派)"라고 불리운다. 이러한 단계(丹溪)의 의학사상(醫學思想)과 한방부인과학(韓方婦人科學)과 관련된 이론을 개괄하여 단계(丹溪)의 이론과 처방이 우리나라 한방(韓方) 부인과학(婦人科學)의 발전과정에 미친 영향을 고찰하였다. 그 결과 첫째, 단계(丹溪)의 증치사상(證治思想)의 특징은 거습담(祛濕痰), 조기(調氣), 자음청열(滋陰淸熱)의 치법(治法) 운용(運用)과 금욕적(禁慾的) 섭생(攝生)을 통한 양생론(養生論)이었으며, 둘째로 단계(丹溪)의 이론(理論)과 처방(處方)들은 <의방류취(醫方類聚)>와 <동의보감(東醫寶鑑)>에서 <단계심법(丹溪心法)>과 <단계심법부여(丹溪心法附餘)>의 내용을 대폭 수용함으로써 우리나라 한방부인과학(韓方婦人科學) 이론(理論)의 주요한 부분을 형성하는 계기가 되었으며, 셋째로, 부인과질환과 관련하여 월경병(月經病)에 조기(調氣) 및 거습담(祛濕痰)을, 불임증(不姙症)에는 월경불조(月經不調)와의 관련성(關聯性)은 물론 체형(體型) 체질별(體質別) 병기(病機)와 치법(治法)을 구분하였으며, "산전당청열양혈(産前當淸熱養血)" 이론에 의한 황금(黃芩) 백출(白朮)을 위주로 한 안태론(安胎論), "종담론치(從痰論治)"한 악조치법(惡阻治法), 난산예방(難産豫防), 산후(産後)의 "대보기혈(大補氣血)"등의 이론을 제시하여 단계(丹溪)의 학술사상이 우리나라 한방부인과학에 미친 영향은 많았던 것으로 사료된다.

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119구급대원의 감염관리에 대한 인지도와 수행도 관계 연구 (A Study on the level of Recognition and Practices of 119 Emergency Medical Technician about Infection Control)

  • 윤형완;정지연
    • 한국응급구조학회지
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    • 제12권3호
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    • pp.99-113
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    • 2008
  • In order to protect Rescue 119 workers exposed on the spot from potential infection, this study identified their awareness and practices of infection control so that it could help preventing them from infection and also provide basic materials necessary for pre-hospital infection control. This study applied questionnaire survey to total 215 Rescue 119 workers at fire stations in Jeonbuk province, Jeonnam province and Gwangju city from July 14 to Sept. 14, 2006 for the benefit of data collection. The questionnaire about possible associations between awareness and practices of infection control consisted of total 46 times across 6 categories such as washing hands during emergency activities ; fluid therapy and injection ; respirator maintenance; individual hygienics ; disinfectant supplies and equipments maintenance ; and control of infectious wastes. And collected data were processed using SPSS statistic program to analyze frequency and percentage, mean and standard deviation, Pearson's correlation coefficient, t-test and one-way ANOVA. As a result, this study came to the following conclusions : In terms of awareness about infection control, our respondents showed highest awareness about infectious waste control, and also showed highest level of practices in washing hands during emergency activities. Throughout all domains, awareness means were higher than practice means. In particular, infectious waste control was the domain of significant differences between awareness and practices. In terms of associations between awareness and individual characteristics, it was found that female rescue worker group and hospital/general hospital career group (before joining the Rescue 119) showed significantly higher awareness on statistic level. In regard to associations between individual characteristics and practices, it was found that female rescue worker group showed higher level of practices than male group on statistic level. This study also analyzed correlations between rescue workers' awareness and practice of infection control. As a result, it was found that the higher awareness was in correlations with the higher practices across all 6 domains including washing hands. In addition, the higher awareness of a questionnaire item was in significantly positive correlations with the higher practice of other items. However, our respondents showed high awareness about anti-infection, but low practices in reality. This indicates necessity of devising possible solutions to improve the practices as much as awareness. Especially, it was noted that major reasons for insufficient practices of infection control guideline come from unhabituated practices and lack of supports for infection-preventing supplies and protective device (mask, etc). Hence, it is necessary to provide more infection-preventing supplies for local rescue workers sufficiently, in parallel with steady habituation of infection control. Furthermore, it is required to manage and study infection control policies even at pre-hospital step in efforts for effective infection control, education and activities.

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