• Title/Summary/Keyword: bum-out

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Burn-out Finishing of Cotton/Polyester Fiber Mixed Fabrics using Cupric Sulfate (황산구리를 이용한 면/폴리에스터 교직물의 탄화가공)

  • 김수미;송화순
    • Journal of the Korean Home Economics Association
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    • v.42 no.8
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    • pp.113-121
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    • 2004
  • This study used cupric sulfate as a bum-out agent. The concentration of cupric sulfate, temperature and time were varied with glycerin included or excluded on the properties of polyester ground fabrics. The results are as follows. The effect of carbonization with glycerin included was decreased, but removal of carbide with glycerin included was easier than that with glycerin excluded. The white index and tensile strength of polyester ground fabrics were decreased as the processing concentration, temperature and time increased. The shrinkage was increased as the processing concentration, temperature and time increased. The optimum conditions with cupric sulfate as the bum-out agent was 5% concentration, 140$^{\circ}C$, 3min., and 3kgf/cm$^2$ and with cupric sulfate added to glycerin was 5% concentration, 150$^{\circ}C$, 5min., and 3kgf/cm$^2$.

Experimental studies on the Acute Toxicity of Bos taurus.Ursus thibetanus.Moschus extrct solution(BUM) for Herbal-acupuncture (우황(牛黃).태담(態膽).사향약침액(麝香藥鍼液)(BUM)의 급성독성(急性毒性)에 관한 실험적(實驗的) 연구(硏究))

  • Lee, Sang-Woon;Kang, Dae-In;Jeong, Chan-Gil;Kim, Kwang-Ho;Soh, Kyung-Sun
    • Journal of Pharmacopuncture
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    • v.5 no.2
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    • pp.6-24
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    • 2002
  • This experiment was carried out to study on the safety assessment of Bos tures$^{\circ}{\S}Ursus thibetanus^{\circ}{\S}$Moschus extract solution(BUM) for Herbal-acupuncture. SD rats and ICR mice were used for acute toxicity test. the results were summerized as follows; 1. In rats and mice, LD50 value could not be measured. 2. There were no abnormal finding in acute toxicity test treated BUM for Herbal-acupuncture

A Study of the Development of the Temporary Transformer System for the Replacement of Bum-out Pole Transformer (소손 주상변압기 교체를 위한 임시송전시스템 개발에 관한 연구)

  • Lee, Jung-Kyun;Yun, Young-Mo;Jeun, Si-Sik;Lee, Jae-Heon;Jeong, Dong-Ju;Park, Yong-Beom;Kim, Jeom-Sik;Jo, Seong-Mun
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2009.10a
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    • pp.43-46
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    • 2009
  • This paper describes a development of the temporary transformer system and method. The failure causes are genrally divided into problems in manufacturing, mounting and operating. To replace the bum-out pole transformers developed various facilities, power cable clamp, the control panel of self-sensing device and voltage connection box etc. That is more effective to establish the emergency transmission systems for the non interruption replacement of distribution transformers.

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Study for the Cooling Performance Improvement of a Mini Bus (소형버스 냉각성능 향상 연구(I))

  • Lyu, Myung-Seok
    • Transactions of the Korean Society of Automotive Engineers
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    • v.13 no.2
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    • pp.10-15
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    • 2005
  • This study was initiated to evaluate the cooling performance of CAC (charged air cooler) and radiator in the engine room of a mini bus. So we had firstly to predict the mass flow rate coming from radiator grille and front bum per opening using computational fluid dynamics (CFD) simulation based on 3D configuration. And simulations were carried out for different cooling module layout and bum per opening hole size on sam e vehicle operating condition. Simulation results show that CAC cooling performance at reverse protecting plate-applying model was much efficient than that of the bum per opening hole size-increasing model in IMTD point of view. Part of the CFD simulation results was com pared to with experimental data. It was confirm ed that the CFD approach using STAR-CD based on pursuing no-com promise solution could provide design engineers with useful design information in the early design stage of vehicle development.

The Study of Engine Output and Emission Characteristics according to Air Fuel Ratio far a Supercharged LPLi Engine (과급 LPLi 엔진의 공연비 변화에 따른 출력성능 및 배기특성에 관한 연구)

  • 류재덕;윤용원;이기형;이창식
    • Transactions of the Korean Society of Automotive Engineers
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    • v.10 no.4
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    • pp.77-84
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    • 2002
  • For the purpose of obtaining a fundamental data which is needed to develope the port injection type charged LPLi engine system, we manufactured intake port injection system of liquid charging LPG and modified heavy duty single cylinder LPLi engine from heavy duty diesel engine. Engine output and emission characteristics were analyzed under variable air/fuel ratio and charging pressure. Since LPG is consisted of propane and butane, we investigated combustion characteristics using this two kinds of fuel. From the result of charging engine performance test, engine torque increase about 30% ∼ 40% with 0.3bar charging pressure. In low speed condition, as charging pressure increase, combustion stability improve ill lean bum condition, but, in high speed condition, combustion stability make worse in lean bum condition. We know that engine output decreased rapidly from the condition of air excess ratio 1.3. In addition, we measured emission characteristics under the lean bum and charging condition. From this experiment, we found that CO emission is out of the question in the range from stiochiometric to lean burn and charging condition, but charging pressure has influence on HC emission.

EffECTIVE PARTICULATES REDUCTION IN DIESEL ENGINES THROUGH THE USE OF FUEL CATALYSED PARTICULATE FILTERS

  • Vincent, M.-W.;Richards, P.-J.;Rogers, T.-J.
    • International Journal of Automotive Technology
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    • v.3 no.1
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    • pp.1-8
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    • 2002
  • There is Increasing world-wide interest in diesel particulate filters (DPF) because of their proven effectiveness in reducing exhaust smoke and particulate emissions. Fine particulates have been linked to human health . DPF use requires a means to secure the bum-out of the accumulated soot, a process called regeneration. If this is not achieved, the engine cannot continue to operate. A number of techniques are available, but most are complex, expensive or have a high electrical demand. The use of fuel additives to catalyse soot bum-out potentially solves the problem of securing regeneration reliably and at low cost. Work on organo-metallic fuel additives has shown that certain metals combine to glove exceptional regeneration performance. Best performance was achieved with a combination of iron and strontium based compounds. Tests were carried out un a bed engine and on road vehicles, which demonstrated effective and reliable regeneration from a tow dose fuel additive, using a single passive DPF. No control valves, flow diverters. heaters or other devices were employed to assist regeneration. Independent particle size measurements showed that there were no harmful side effects from the use of the iron-strontium fuel additive.

Spacing Method Suitable for Flexible Cholesteric LCDs

  • Yoon, Hyun-Sub;Min, Kwan-Sik;Kwon, Soon-Bum
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07a
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    • pp.484-487
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    • 2005
  • In order to find out LC cell spacing method suitable for flexible cholesteric LCDs with high mechanical stability, we carried out bending and mechanical shock tests by using various spacing techniques: bead spacer, photo spacer, polymer wall with bead spacer and polymer wall with photo spacer. As a result, it was found that the spacing method using polymer wall incorporated with photo spacer is the best for flexible cholesteric LCDs in terms of mechanical stability. The investigation is discussed in detail.

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The Clinical Study about Qualitative and Quantitative Characteristics of Acupuncture Sensation According to the Type of Pharmacopuncture: Study about BUM Pharmacopuncture, Mountain Ginseng Pharmacopuncture and Sciatica No. 5 Pharmacopuncture (약침 종류에 따른 득기감의 질적 양적 특성에 대한 연구: BUM약침, 산양산삼약침, 좌골신경통 5호 약침의 득기감 연구)

  • Lee, Eun Sol;Oh, Ji Yun;Kim, Yu Jong;Yu, A Mi;Jang, Soo Hui;Cho, Hyun Seok;Kim, Kyung Ho;Lee, Seung Deok;Kim, Kap Sung;Kim, Eun Jung
    • Journal of Acupuncture Research
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    • v.30 no.5
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    • pp.25-39
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    • 2013
  • Objectives : This study was designed to find out the differences of the acupuncture sensation by type of pharmacopuncture. And furthermore we try to find out whether normal saline(NS) is able to be constituted as an appropriate control group for the Calculus Bovis Fel Ursi Moschus(BUM) pharmacopuncture, mountain ginseng pharmacopuncture and sciatica no. 5 pharmacopuncture. Methods : NS and three type of pharmacopunctures were inserted into $ST_{36}$, and $ST_{37}$ of the subjects. Before and after the treatment, subjects completed a questionnaire rating the intensity of 13 kinds of acupuncture sensation(acupuncture sensation scale, ASS). We compared the subjective acupuncture sensation between the NS and three type of pharmacopunctures. Results : BUM pharmacopuncture showed significantly intense acupuncture sensation comparing other two pharmacopunctures and NS. There was no statistically significant difference among mountain ginseng pharmacopuncture, sciatica no. 5 pharmacopuncture and NS. Conclusions : We found that NS may be able to be an placebo pharmacopuncture for mountain ginseng pharmacopuncture and sciatica no. 5 pharmacopuncture. Additional study is needed for placebo pharmacopuncture of BUM pharmacopuncture.

The Fundamental Meaning of Mai and Shanghanlun Provisions Based on Paleography (『상한론(傷寒論)』 맥(脈) 및 기타 조문(條文)의 고문자학적(古文字學的) 해석(解釋)을 통한 본원적(本源的) 의미(意味) 고찰(考察))

  • Rho, Yeong-Beom;Lee, Ji-Hwan;Ha, Hyun-yee
    • 대한상한금궤의학회지
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    • v.7 no.1
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    • pp.1-14
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    • 2015
  • Objectives : The purpose of this study is to show the importance of Shanghanlun(傷寒論) paleography. Shanghanlun(傷寒論) must be thoroughly reinterpreted through graphonomy evidence. Methods : The object of this study is Gangpyeong-Shanghanlun(康平傷寒論), which is known as the oldest edition of Shanghanlun(傷寒論). This study compares the paleographic meaning of Shanghanlun(傷寒論), Mai(脈), Shanghanlun provisions 96 and 103 to existing interpretations. Results : Mai(脈) doesn't mean 'Radial pulse(Chon.Gwan.Cheok)' in Shanghanlun(傷寒論), so the meaning of Mai(脈) should be redefined. Mai(脈) means 'Continuous movement of human body' based on Chinese paleography. Also it's being verified as reasonable hypothesis in recent clinical researches. In addition, Shanghanlun(傷寒論) paleography makes it possible to grasp the true intention of Zhang Zhongjing(張仲景). Conclusions : Shanghanlun(傷寒論) paleography has a limit that it cannot be perfectly applied to clinical diagnosis. Also, it may not represent the whole meaning of Shanghanlun (傷寒論). Therefore, the value of Shanghanlun(傷寒論) reinterpretation should be recognized through this study, and we should continuously find out future values from Shanghanlun(傷寒論).

The Burn-out Syndrome of the Doctors and Nurses working in the Emergency department (종합병원 응급실 의사와 간호사의 탈진(burn-out) 요인에 관한 연구)

  • Kim, Nam-Soo;Yu, Seung-Hum;Sohn, Tae-Yong
    • Korea Journal of Hospital Management
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    • v.7 no.3
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    • pp.1-24
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    • 2002
  • The purpose of this study was to find the factors affecting the bum out syndrome and its degree in terms of personal, organizational and clients characteristics, and then to find the ways to reduce or eliminate those factors. The 228 doctors and the nurses who worked at the emergency departments in 6 general hospitals with more than 700 beds in Seoul were surveyed from April 15, 2002 for 15 days. A structured self-recording questionnaire was used; the t-test and ANOVA was used to analyse the median difference between the occupation, and multiple regression was employed to find the factors affecting the bum-out syndrome. The summary of this research analysis is as follows : First, of several variables, the highest frequency of the burn-out was the emotional burn-out followed by lack in personal touch toward the patients, decrease in sense of personal achievement. These results indicate that the doctors and nurses in emergency departments experience higher degree of burn-out than the social workers and the nurses who work at other departments in heath care environment as other studies revealed. Second, the analysis of the total burn-out factors showed the lower self respect, younger age, heavier work load, higher dissatisfaction rate toward remuneration and not-so-smooth relationship with the patients and their relatives the higher burn out rate. These variables explained 54% of the total variables. Third, the nurses experienced more burn-out syndrome than the doctors. The degree of self-respect, work pattern, relationship with the clients, age and remuneration were the causes of the burn-out. The doctors recorded lack in personal touch toward the patients more, while the nurses more to emotional exhaustion. The limitations of this research are the subjective answers of the respondents to certain questions and differences in sample numbers of each hospital in which some reservation can be exercised in explaining statistical significance of the data, and generalizing the conclusion. Despite of its limitation, this research has its own merit as an unpreceded research in this field, and provision of the basic materials to prevent and find causes of the burn-out syndrome among the doctors and nurses in the emergency departments.

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