• 전기학회논문지
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• 제63권10호
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• pp.1485-1490
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• 2014

$SF_6$ gas has been used for power transformers or gas insulated switchgears, because it has the superior insulation property and the stable structure chemically. It has been, however, one of global warming gases and required to reduce the its amount. Some papers have reported that its amount could be reduced by mixing with other gases, such as $N_2$, $CF_4$, $CO_2$ and $C_4F_8$ and their mixture gases would cause the synergy effect. In this paper, we investigated the characteristics of DC plasmas on $SF_6$ mixture gases with $N_2$ at atmospheric pressure. $N_2$ gas is one of cheap gases and has been reported to show the synergy effect with mixing $SF_6$ gas, even though $N_2$ plasmas have electron-positive characteristics. 38 kinds of $SF_6/N_2$ plasma particles, which consisted of an electron, two positive ions, five negative ions, 30 excitation and vibration particles, were considered in a one dimensional fluid simulation model with capacitively coupled plasma chamber. The results showed that the joule heating of $SF_6/N_2$ plasmas was mainly caused by positive ions, on the other hand electrons acted on holding the $SF_6/N_2$ plasmas stably. The joule heating was strongly generated near the electrodes, which caused the increase of neutral gas temperature within the chamber. The more $N_2$ mixed-ratio increased, the less joule heating was. And the power consumptions by electron and positive ions increased with the increase of $N_2$ mixed-ratio.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 추계학술대회
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• pp.194-196
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• 2017

<펜타스톰>은 텐센트의 티미 스튜디오에서 2015년에 개발한 MOBA게임이다. 본 게임의 운영은 매우 성공적으로 2017년 5월에는 전 세계 모바일 게임 수입 순위에서 1위를 차지 하였다. 게임의 성공은 뛰어난 제품의 내용 외에 게임을 위한 홍보 전략과도 밀접하게 연관되어 있다. 이것이 바로 본문에서 다루고자 하는 연구문제이다. 유명한 시너지 이론(Synergy Theory)에 의하면 제품은 초기, 발전기, 폭발시기 등 다양한 커뮤니케이션 단계에서 서로 다른 커뮤니케이션 수단으로 상호 전파를 진행하여 커뮤니케이션 효과를 강화하였다. 마케팅 활동이 언제나 '어디서든 모여서, 당신도 함께'라는 주제를 둘러싸고 진행됐다. 본 연구는 사례 연구 방법으로 해당 게임 2년 동안의 통합적 마케팅 커뮤니케이션(IMC)의 홍보 전략에 대해 분석하고자 하며, 이로써 게임 개발자들이 게임 홍보의 중요성을 깨닫게 되고 또 기타 게임 상품의 홍보와 출시에 도움을 줄 수 있기를 기대한다.

• 대한임상검사과학회지
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• 제44권2호
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• pp.81-85
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• 2012

This study was undertaken to evaluate phenotypic and genotypic methods for detection of Metallo-Beta-Lactamases (MBLs) among nosocomial Pseudomonas aeruginosa. Of the 50 P. aeruginosa isolates from clinical specimens, 20 were evaluated for carbapenem resistance and screened for MBL by double-disk synergy test and combined-disk test. Nineteen strains (95%) were found to be MBL producers among the 20 P. aeruginosa. MBL positives were further confirmed by Polymerase Chain Reaction (PCR). For the IMP and VIM types of MBLs, PCR analysis was performed on 19 of the 20, and 10 were positive for VIM MBL type. This study reports the validation of a simple and accurate MBL detection method that can be easily incorporated into the daily routine of a clinical laboratory. Early detection of MBL-carrying organisms, including those with susceptibility to carbapenems, is of paramount clinical importance, as it allows rapid initiation of strict infection control practices as well as therapeutic guidance for confirmed infection.Key Words : Hepatitis A virus (HAV), Anti-HAV, Hospital workers, Prevalence, Vaccination

• 대한한의학방제학회지
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• 제27권1호
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• pp.45-52
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• 2019

Objectives : Hyperthermia is a widely used therapeutic tool for cancer therapy and a well-known inducer of apoptosis. Although the Cinnamomi cortex (CC) is a potent anticancer agent for several human carcinomas, it is less potent in the human U937 cell line. To explore any enhancing effects of CC with hyperthermia induced apoptosis, this study investigated the combined effects and apoptotic mechanisms of hyperthermia and CC in U937 cells. Methods : U937 cells were heat treated at $43^{\circ}C$ for 30 min with or without pre-treatment for 1h with CC and then incubated at $37^{\circ}C$ with 5% $CO_2$. Cell viability was analyzed by MTT assay and Trypan blue assay. Morphological changes reflecting apoptosis were visualized under microscope. Synergy effect of CC combined with hyperthermia were calculated by Compusyn software. The expression of proteins related to apoptosis and signaling pathways was determined by western blotting. Results : Hyperthermia with CC reduced cell viability and induced apoptosis. Combined hyperthermia and CC treatment markedly augmented apoptosis by upregulating proapoptotic proteins and suppressing antiapoptotic proteins, culminating in caspase-3 activation. Furthermore, the combined treatment, decreased the expression of in Bcl-2 family, cyclin D1, VEGF, MMP2 and MMP9 expression. Conclusion : This study provides compelling evidence that hyperthermia, in combination with CC, is a promising therapeutic strategy for enhancement of apoptosis and suggests a promising therapeutic approach for cancer.

• 한국자연치유학회지
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• 제7권2호
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• pp.47-50
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• 2018

목적: 세계에서 가장 아름다운 노래 아리랑 노래가 자연치유와 만나 시너지효과를 높이는 것이 중요하다. 그래서 본 연구에서는 아리랑 노래와 자연치유는 서로 다른 경계를 넘나들며 아리랑 음악 치유라는 분야에 아리랑과 새로운 체조를 접목해서 새로운 품새를 개발하는 것이 목적이었다. 방법: 아리랑체조를 개선하는 방법을 사용하였다. 결과: 사용한 아리랑 노래는 서울, 해주, 밀양, 강원도, 진도아리랑을 후렴과 본절 1절을 사용하였다. 기존의 아리랑 체조를 새로이 개발한 신 아리랑체조는 아리랑음악치유의 일부분으로 6개 동작으로 구성되어 있다. 품새를 보면 서울아리랑에 맞추어 준비운동을 시작으로 명치와 간담, 비장과 위장을 지압한다. 해주아리랑에 맞추어 복부의 오른쪽 간담, 왼쪽 비장과 위장, 위쪽(위장)과 아래쪽 방광을 맛사지해 준다. 밀양아리랑에 맞추어 단전과 방광, 심장과 폐를 두드린다. 다음에는 강원도 아리랑에 맞추어 양팔과 어깨를 스트레칭하고 양손을 엇갈려 뒤에서 만나게 한다. 그리고 진도아리랑에 맞추어 어깨와 손목을 돌린다. 결론: 새로운 품새를 이용한 신 아리랑과 체조에 맞추어 하는 유산소운동은 건강과 몸과 마음의 치유에 유용하다.

• Advances in materials Research
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• 제13권3호
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• pp.221-232
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• 2024

Waste tire management and recycling have grown to be significant issues because they bring up a global environmental concern. Thus, turning recycled waste tires into useful products may help tackle the environmental issue. This research aims to study and compare the effect of recycled carbon black (rCB) and commercial carbon black (CB) at certain 15 vol. % of filler loading on the mechanical, thermal, morphology and electrical properties of epoxy/CB composites. For this project, epoxy resin, diethyltoluenediamine (DETDA), recovered carbon black (rCB) and commercial carbon black (CB) graded N330, N550, N660 and N774 were mixed and compared accordingly to the formulation determined. The CB content was dispersed in the epoxy matrix using the mechanical mixing technique. The distribution and dispersion of CB in the epoxy matrix affect the characteristics of the conductive composites. rCB content at 15 vol% was selected at fixed content for comparison purposes due to the optimum value in electrical conductivity results. The flexural strength results followed the sequence of rCB>N774>N660>N550>N330. As for electrical conductivity results, epoxy/N330 exhibited the highest conductivity value, while the others achieved a magnitude of X10^-3 due to the highest external surface area of N330. In terms of thermal stability, epoxy/N330 and epoxy/N774 were slightly more stable than epoxy/rCB.

• 농촌지도와개발
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• 제11권2호
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• pp.267-277
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• 2004

This study was carried out to set up the effective development strategy for resources industry of Chungnam Province. Data were gathered from relevant organizations and several times of brain storming was conducted by specialists in the field of animal science. The results obtained were as follows; 1) It was found by SWOT analysis that pig, cow, poultry, pets and selected fishes were desirable items as promising animal resources(Table 9). 2) According to the road map of animal resources industry for Chungnam Province, the principles and strategies were needed for the implementation of the industry(Fig. 3). 3) It was recommended that each city and county should develop their major animal resources industry(Fig. 4). 4) For synergy effect of development strategy as animal resources industry, networking among universities, industries, and government organizations, etc. is needed.

• Biotechnology and Bioprocess Engineering:BBE
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• 제4권1호
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• pp.36-40
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• 1999

Optimal lyophilization process was developed for manufacturing the dried product of Lactobacillus acidophilus with high cell viability. Three major factors, freezing rate, specific surface area of samples, and stabilizer type and their synergy were shown to play a crucial role in the development of an effective lyophilization process. Finally we found an optimal combination among three process parameters mentioned above; an exceptionally high cell survival percentage of 90% was achieved using the 8.28 cm-1 specific surface area of samples, slow freezing rate, and a stabilizer composition of 4% skim milk +1% glycerol +0.1% calcium chloride.

• 디지털산업정보학회논문지
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• 제11권2호
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• pp.131-139
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• 2015

This study suggests that the application of split screen as visual media can attain the effect of diversity through providing rich information and accepting diverse contents as gorgeous aesthetics. Single images are analyzed as appropriate to a demanded concentration genre such as news and dramas, entertainment. In contrast, images with natural images and ads images those are more appropriate and analyzed as the genre of the split-screen which is highly efficiency to the contents and also highly efficiency to the spatial diversification. In introducing various genres of digital contents into split screen, the synergy of contents is induced by placement in consideration of the characteristics of split screen position. In order to increase the concentration of the split-screen image, using the left area and right area above it, can increase the effectiveness of the content.

• 환경영향평가
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• 제17권5호
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• pp.299-309
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• 2008

Cumulative effects can be defined as impacts on environment which results from incremental impacts of a proposed project, which covers other past, present, and reasonably foreseeable future actions. The necessity of Cumulative Effect Assessment is that, when there are several projects near the project area, environmental effects of individual project can be larger or smaller than those of individual project without having projects nearby because of synergy, ascending and descending effects. This study was intended to help Environmental Impact Assessment practitioners identify spatial and temporal boundaries during the scoping stage. To do this, literature review of domestic and foreign legislations, guidelines, textbooks and papers related to Environmental Impact Assessment and Cumulative Effect Assessment was accomplished. This study suggests that continuous research be needed in order to identify spatial boundaries for other assessment fields and to develop methodologies for cumulative effect assessment.