Oxamide를 적용한 무연 라이너 연구
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- Proceedings of the Korean Society of Propulsion Engineers Conference
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- 2000.04a
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- pp.25-25
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- 2000
가스발생기와 같이 로켓모터에서 추력이 아닌 기체압 형태의 에너지를 일정한 시간동안 얻고자 하는 경우, 로켓모터의 크기 및 추진제 충전율을 고려하여 그레인 형태를 단면 연소형으로 선택할 수 있다. 단면 연소형 그레인을 가진 로켓모터는 그레인의 연소시, 일찍 연소된 부분의 라이너가 추진제 연소 화염에 노출되면서 표면부터 서서히 분해가 진행되며, 분해물질의 일부는 추진제에 포함된 산화제 성분에 의해 산화되어 기체화 될 수 있다. 산화제 성분이 충분치 않은 경우에는 고체 입자 형태로 추진제 연소 기체와 함께 배출되며, 이는 일차연기(primary smoke)의 일종으로 볼 수 있다. 가스 발생기에서 얻고자 하는 기체는 고체 입자가 포함되지 않은 깨끗한 기체형태인 경우가 대부분이며, 따라서, 무연 라이너 및 내열재의 연구가 필요하다.
복지시대의 첨병-구례군보건의료원 김영락 원장/노인복지시설 통합.개편/비만치료도 건강보험급여 대상/보건소 중심, 만성질환 관리시스템 구축/임의왕진 의료급여비 환수/적절한 운동이 '대장암' 예방한다/모유수유 오래하면 유방암 감소/50대 두통, 어지러움은 중풍 의심/축수산물 항생제 잔류 기준 엄격 적용/담배연기 없는 깨끗한 병원/레이저 이용 암 세포만 선택적 파괴/'주민 삶의 질 적인 개선' 지향-구례구보건의료원/농촌지역 공공보건의료 질적 발전에 정열 쏟아-김영락 원장/동아제약, 유럽 시장 본격진출/LG, 세계 최초 항구토 패치 도입/한미약품, 의약사 금융지원 한다/국내 첫 생약제제 임상시험 지침 마련/암환자 완치율 44.4% 수준/고혈압.당뇨병치료율 2배 증가/혈압 없어도 '코골면' 고혈압 위험 높아/조기위암 전체 위암 절반 넘었다/항암면역세포치료제 NKM 허가/OECD Health Data 2007 보건의료실태분석
This study is described for development of the stand-alone smoke and heat detector (SASHD) according to the revised in 2011 type approval and performance inspection code for detector. The main improvement of the revised regulation is source. CMOS microcontroller with nano watt technology is use for development of the workable SASHD over 10 years. The low-power SASHD is developed by using the power-saving sleep mode of microcontroller, by making the low-power source voltage checker, heat detector and smoke detector. The stand-alone detector is developed by smoke and heat detector type for reduce false fire alarm. User can choose type of work between the heat detection mode and smoke & heat detection mode. The SASHD can communicate with each them using RS-485 communication supported from microcontroller. So, this study can develop the SASHD that is able to alarm more wide area when fire occurs and reduce a flash fire alarm.
Overview of Research: Product availability is one of important competences of store to fulfill consumer needs. If stock-outs which means a product what consumer wants to buy is not available occurs, consumer will face decision-making uncertainty that leads to consumer's negative responses such as consumer dissatisfaction on store. Stockouts was much studied in the field of academia as well as practice in other countries. However, stock-outs has not been researched at all in Marketing and/or Distribution area in Korea. The main objectives of this study are to find out determinants of consumer responses such as Substitute, Delay, and Leave(SDL) when consumer encounters out-of-stock situation and then to examine the effects of these factors on consumer responses. Specifically, this study focuses on situational characteristics(e.g., purchase urgency and surprise), store characteristics (e.g., product assortment and store convenience), and consumer characteristics (e.g., brand loyalty and store loyalty). Then, this study empirically investigates relationships these factors with consumers behaviors such as product substitution, purchase delay, and store switching.
Succinic acid has recently been drawing much interest as a raw material for biodegradable polymer. In this study acetic acid was removed by reactive extraction with various amines dissolved in various diluents. Distribution coefficients were determined as the kind of amines, diluents, and pHs of continuous phase. The extraction capacity increased with the polarity of diluent and the decrease of pH from the artificial binary solution. Based on the different extractability for succinic acid and acetic acid from the artificial binary solution, the removal of acetic acid from fermentation broth was investigated using various amines and diluents. In addition, the extractability and selectivity of CLA for succinic acid and acetic acid from fermentation broth were higher than that of straight solvent extraction.
A fire detector installed in wood cultural properties has not have selected the detector type appropriate for the features of cultural properties and the structure of wood fire after the fire in Sungnyemun-Gate since 2008. Applying wooden cultural properties different from the general architecture of the structure and fire characteristics is difficult. Therefore, buildings were classified into four shape types and field survey and wooden architecture structure characteristics to identify the problems of the detectors installed on wooden cultural property buildings. The problems appeared to lack the adaptability to external fire detection sensor selection and missing fire detectors installed in accordance with the place. To solve the problem, the closed and open space of the rooms used a smoke detector, outdoor select flame or fixed temperature linear detector to solve the problem.
In this study the trace of chlorinated organic compound in aqueous solution was separated by pervaporation process using crosslinked PDMS (polydimethylsiloxane) membrane. The flux of trichloroethylene(TCE) increased linearly with feed composition but the flux of water was slightly increased. The partial flux of TCE was greater than that of tetrachloroethylene(PCE). The partial flux of TCE was not changed with operating temperature, but increased rapidly with feed flow rates. High crosslinking density causes the reduction of solubility and diffusivity for target component. The reduction of flux and selectivity for TCE is due to the chain immobilization and reduction of diffusivity with crosslinking density.
Reaction-to-Fire's performances such as combustion properties of sandwich panels were tested according to ISO 13784-1 (room corner test for sandwich panel building systems) method which is made for the purpose of supplementing ISO 9705 room corner test, and analyzed comparatively. Several variables including heat release rate, smoke production rate, FIGRA, SMOGRA, thermal configuration, visual check lists and so on, were analyzed for specific four materials on sandwich panel systems. Finally, Reaction-to-Fire's performances of test results on each material by ISO 13784-1 are categorized by applying to the classification systems of both EN 13501-1 and Eurefic Research Program.
In this paper, we design and implement web based Intranet Management Report Publisher (IMRP) that generates automatically daily, weekly, monthly and yearly report for configuration, performance and fault management of the Intranet. Intranet managers can analyze status of the Intranet with IMRP easier The IMRP publishes the Intranet management reports based on TINA (Telecommunication Information Networking Architecture) using CORBA(Common Object Request Broker Architecture). The advantages of this architecture are to protect the Intranet management system by being connected to the User Agent program and to raise the efficiency of maintenance by modifying only the User Agent program as accessing part of the Intranet management system is needed to change.
The research was started out of curiosity for what made is the estimation results of l\1NL model, and
shows the marginal effects for each determinant to consumer's responses(SDL). Significant statistical results were as follows. Purchase urgency, purchase quantities, pre-purchase plan, product assortment, store price image, brand loyalty, and store loyalty were turned out to be significant determinants to influence consumer alternative behaviors in case of out-of-stock situation. Specifically, first, product substitution behavior was triggered by purchase urgency, surprise, purchase quantities, pre-purchase plan, product assortment, store price image, brand loyalty, and store loyalty. Second, purchase delay behavior was led by purchase urgency, purchase quantities, and brand loyalty. Third, store switching behavior was influenced by purchase urgency, purchase quantities, pre-purchase plan, product assortment, store price image, brand loyalty, and store loyalty. Finally, when out-of-stock situation occurs, store convenience and salesperson service did not have significant effects on consumer alternative responses.
Selective Removal of Acetic Acid for the Effective Production of Succinic Acid using the Various Amino Extractants and Solvents
(효율적 숙신산 생산을 위한 다양한 아민추출제와 용매를 이용한 아세트산의 선택적 추출제거)
Selection of a Fire Detector for Wood Cultural Property
(목조문화재 건축물 구조에 따른 화재감지기 종류 선정에 관한 연구)
Removal of Chlorinated Organic Compounds Using Crosslinked PDMS Pervaporation Membrane
(가교된 PDMS 투과증발 막을 이용한 유기 염소계 화합물의 제거)
Classification of Reaction-to-Fire's Performances on Sandwich Panel Systems by Applying to ISO 13784-1 Fire Tests
(실대규모 화재시험(ISO 13784-1)을 적용한 샌드위치 패널 시스템의 연소성능 분류)
Design and Implementation of Web Based Intranet Management Report Publisher
(웹 기반의 인트라넷 관리 보고서 작성기능 설계 및 구현)
Use of Long Take in The Film <The Graduate> : Focused on Mise-en-Scène
(영화 <졸업>에 나타난 롱테이크의 이용 : 미장센을 중심으로)
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