• 제목/요약/키워드: Technology alternative

검색결과 4,048건 처리시간 0.042초

Analysis of the Emission Benefits of Using Alternative Maritime Power (AMP) for Ships

  • Kim, Kyunghwa;Roh, Gilltae;Chun, Kangwoo
    • 해양환경안전학회지
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    • 제25권3호
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    • pp.381-394
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    • 2019
  • The marine industry contributes a large proportion of the air pollutant emissions along coastal regions, and this air pollution has been strongly linked to cardiovascular diseases and other illnesses. To alleviate the problem, many ports have installed alternative maritime power (AMP) facilities that enable onboard marine auxiliary engines with generators (gensets) to be shut down while a ship is at berth. This study compared the emissions from conventional gensets with those from AMP facilities, focusing on four emission types: greenhouse gases (GHG), sulphur oxides (SOX), nitrogen oxides (NOX), and particulate matter (PM). Both direct (combustion / operation) and indirect (upstream) emissions were considered together for the emission comparison. The results showed that AMP has lower emissions than conventional onboard gensets, and this benefit is highly dependent on the electricity generation mix onshore. On average, GHG emissions could be reduced by about 18.3 %, while the other emissions (SOX, NOX, and PM) would decrease more dramatically (88.4 %, 90.1 %, and 91.5 %, respectively). Additionally, future benefits of the AMP would increase due to the expansion of renewable energies. Thus, this study supports the potential of AMP as a promising solution for environmental concerns at ports worldwide.

Effect of Amaranthus Pigments on Quality Characteristics of Pork Sausages

  • Zhou, Cunliu;Zhang, Lin;Wang, Hui;Chen, Conggui
    • Asian-Australasian Journal of Animal Sciences
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    • 제25권10호
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    • pp.1493-1498
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    • 2012
  • The objective of this investigation was to evaluate the possibility of substituting Amaranthus pigments for nitrates in the of manufacture pork sausage. Five treatments of pork sausages (5% fat) with two levels of sodium nitrite (0 and 0.015%), or three levels (0.1%, 0.2% and 0.3%) of pigments extracted from red Amaranthus were produced. The addition of Amaranthus pigments resulted in the significant increase of $a^*$ values, sensory color, flavor and overall acceptance scores, but the significant reduction of $b^*$ values, TBA values and VBN values (p<0.05). Based mainly on the results of overall acceptance during 29 d storage, it could be concluded that Amaranthus pigments showed a potential as nitrite alternative for pork sausage manufacture.

히드로겔을 이용한 약물수송시스템 (Hydrogels for Drug Delivery System:-Colon-Specific Delivery-)

  • 박기동;정서영;김영하
    • Journal of Pharmaceutical Investigation
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    • 제22권4호
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    • pp.251-266
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    • 1992
  • A major problem with the peptide-based drugs is that these drugs must generally be administered by injection. Therefore, there is considerable research interest in alternative routes of delivery, such as buccal, nasal, gastrointestinal route and etc. Site-specific drug delivery to the colon, as an alternative to parenteral drug delivery, is of interest for the delivery of peptide-based drugs as well as the delivery of low molecular weight drugs for the treatment of colonic disease, This review describes some considerations of colon-specific drug delivery using hydrogels.

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대면적 박판 스탬퍼 정밀 가공을 위한 연구 (A Study on the Precision Processing of Thin Stamper with Global Area)

  • 최두선;제태진;서승호
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2003년도 춘계학술대회 논문집
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    • pp.632-635
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    • 2003
  • As a process technology of nano pattern with a new conception for economic and practical technology of alternative nano process. process technologies such as Embossing, Imprinting. Molding and Inking are beginning to make its appearance. Among these alternative processes, nano mold process is a process that is of benefit to mass production and keeps excellency of reproduction and high quality of parts. In this study, we experienced micro precision machining technology of nano stamper for the injection mold of optical disk with big capacity. Especially, Flatness and uniformity are important for nano stamper with global area, for the purpose of developing polishing technology of micro precision of Back polishing only being used for nano stamper, we carried out a basic study to secure flatness standards

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Q-TRIZ를 활용한 지능형 쏠라 그린조명시스템 개발 (The Development of Intellectual Solar Green Street Lighting using Q-TRIZ)

  • 허용정;홍성도;임사환
    • 반도체디스플레이기술학회지
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    • 제10권3호
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    • pp.43-47
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    • 2011
  • Recently the government banners green growth promises as a paradigm of national development which are to reduce greenhouse gases and environmental pollution by exhaust gases from automobiles. Existing in all countries around the world by using fossil fuels to minimize environmental changes are developing a new alternative energy sources. Among the emerging alternative energy, using solar energy technology is applied across the industry, but the maintenance and repair to integrate solar cells and has been a problem occurs. To prolong the life of cells integrated on a solar cell is exposed when the non-eye, etc., when not integrated by the solar cells should not be exposed. In order to resolve these contradictions, a intellectual solar green street lighting was developed by using Q(Quick)-TRIZ.

TRIZ(6SC)를 활용한 솔라 플라워의 창의적설계 (A Study on the Creative Design of Solar Flower using TRIZ(6SC))

  • 임사환;홍성도;허용정
    • 반도체디스플레이기술학회지
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    • 제10권2호
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    • pp.19-23
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    • 2011
  • Global warming is affecting all industries, and has been applied very quickly in the energy sector. Existing in all countries around the world by using fossil fuels to minimize environmental changes are developing a new alternative energy sources. Among the emerging alternative energy, using solar energy technology is applied across the industry, but the maintenance and repair to integrate solar cells and has been a problem occurs. To prolong the life of cells integrated on a solar cell is exposed when the non-eye, etc., when not integrated by the solar cells should not be exposed. In order to resolve these contradictions, a square solar flower of the biological mother was developed by using TRIZ technique(6SC).

예비 중등교사들의 방사성 동위원소에 대한 대안개념의 구조와 개념변화 (The Structure and Conceptual Changes of Preservice Secondary Teachers' Alternative Conceptions on Radioactive Isotopes)

  • 오준영;김상수;강용희
    • 한국지구과학회지
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    • 제28권7호
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    • pp.775-788
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    • 2007
  • 본 연구는 예비 중등교사들을 대상으로 지구 내부에서의 방사성 동위원소에 대한 예비 중등교사의 대안개념의 구조를 이해하는 것이다. 그들의 대안개념의 구조를 Lakatos의 방법론을 기준틀로 한 Niaz(1998)의 제안을 사용하여 분석하였다. 이 연구는 사범대학 과학교육과 $3{\sim}4$학년 17명을 대상으로 하였다. 연구 방법으로는 개방형 질문지법(open-ended written questionnaire)을 사용하였다. 연구 결과, 예비 중등교사들은 지구내부에서 방사성 동위원소의 붕괴의 설명은 지층의 높은 열과 압력이 그들의 대안개념에 가장 큰 영향을 주고 있었다. 또한 우리가 제안한 과학개념구성을 위한 과학 철학적 수업전략에 따른 그들의 개념변화를 조사하였다.

반변천 일대 수달 서식지 적합성 지수(HSI) 모델을 활용한 대체서식지 평가 (Evaluation of Alternative Habitats Using Habitat Suitability Index Model of Lutra lutra in Banbyeoncheon Stream)

  • 심윤진;김선령;윤광배;정진우;박선욱;박용수
    • 한국환경복원기술학회지
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    • 제23권1호
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    • pp.63-76
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    • 2020
  • This study was conducted to quantitatively evaluate and analyze the alternative habitats using the HSI(Habitat Suitability Index) model of Lutra lutra in Banbyeoncheon Stream. Six variables were selected as habitat variables for Lutra lutra, including distance from waterfront, land cover within 1km from waterfront, presence of alluvial island, area of inland water and wetland, distance from roads and urbanized arid areas, and distance from aquaculture farm. The SI(Suitability Index) model and HSI model were developed based on the existing literature of Lutra lutra, the results of field surveys and expert opinions, and applied to the alternative habitats to examine the applicability of the HSI model. The results of this study can provide information on habitat evaluation to prevent the extinction of endangered Lutra lutra. In particular, it is highly applicable to the selection and evaluation of alternative habitats for Lutra lutra.

보완대체요법을 활용한 긍정심리프로그램이 간호대학생의 부정적 정서, 진로결정 자기효능감, 자기자비, 플로리시에 미치는 효과 (The effect of Positive psychology program using Complementary and Alternative Therapies on Negative emotions, Career decision making Self-Efficacy, Self-Compassion, and Flourish of Nursing students)

  • 박향진;장현정
    • 문화기술의 융합
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    • 제9권6호
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    • pp.615-625
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    • 2023
  • 본 연구는 보완대체요법을 활용한 긍정심리프로그램 중재를 통하여 간호대학생의 정신적, 사회 심리적 건강향상을 위하여 시도되었다. 보완대체요법을 활용한 긍정심리프로그램을 제공받은 간호대학생을 실험군으로 프로그램을제공받지 않은 간호대학생을 대조군으로 선정하여 간호대학생의 부정적 정서(우울, 불안, 스트레스), 진로결정 자기효능감, 자기자비, 플로리시에 미치는 효과를 검증하기 위한 비 동등성 대조군 전후 유사실험 설계를 적용한 연구이다. 수집된 자료는 SPSS Version 21.0 프로그램을 이용하여 분석하였다. 실험군은 교육에 참여하지 않은 대조군보다 진로결정 자기효능감, 자기자비, 플로리시 점수가 높았고, 부정적 정서 점수가 낮은 것으로 나타났다. 보완대체요법을 활용한 긍정심리프로그램을 적용한 후 진로결정 긍정적인 연구 효과를 보고함으로 보완대체요법을 활용한 간호중재영역 확대에 기여하였다.