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전체 선택해제
총 75건 검색
본문검색 결과만 보기
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3-Methylthiopropionic Acid of Rhizoctonia solani AG-3 and Its Role in the Pathogenicity of the Fungus
한국식물병리학회 The Plant Pathology Journal 10 Pages
한국식물병리학회 The Plant Pathology Journal 2016, 32권 2호 2 85-94 (10 pages)
reticulum. Seventy-six (76) hours after toxin treatment, cell contents were completely broken, cytoplasm dissolved, and more chromatin were seen in the nucleus. The results suggested that high levels of the toxin concentration caused cell membrane and cytoplasm fracture. The integrity of cellular structure was destroyed by the phytotoxin. The concentrations of the phytotoxin were significantly correlated with pathogenicity and caused damage to the cell membrane of potato stem base tissue. -
Creativity, Leadership, and a Challenge for East Asian Education
Roger C. Shouse 한국교육행정학회 교육행정학연구 12 Pages
한국교육행정학회 교육행정학연구 2012, 제 30권 제 2호 11 253-264 (12 pages)
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폐경기 여성의 랄록시펜과 혈중 지질에 관한 체계적 문헌고찰
유지수, 안지현, 김두리, 추상희 한국기초간호학회 Journal of Korean Biological Nursing Science 10 Pages
한국기초간호학회 Journal of Korean Biological Nursing Science 2010, Vol.12 No.1 9 63-72 (10 pages)
폐경은 여성에게 흔히 체중 및 체지방을 증가시킨다. 특히 복부로의 지방 재분포를 유발하여 여성의 심혈관 질환의 위 험을 증가시키는데 기여하는 것으로 알려져 있다. 전 세계적 으로 여성 사망원인 1위 질환은 심혈관계 질환으로 보고되고 있으며, 최근 우리나라에서도 여성의 심혈관계 질환으로 인한 사망률이 증가하고 있다. 특히 심혈관질환의 위험요소인 복부 비만 및 고밀도지단백(HDL) 콜레스테롤 이상, 총 콜레스테 롤 이상이 45세 이후 중년 여성에서 같은 연령의 남성에 비해 급격히 증가하는 것으로 보고되고 있어(Ministry... -
월경 전 여성 청소년들의 골밀도 특성
김도연, 윤병곤 한국웰니스학회 한국웰니스학회지 13 Pages
한국웰니스학회 한국웰니스학회지 2012, 제 7권 1호 23 243-255 (13 pages)
골밀도 특성에 관한 연구는 문헌에 많이 발표 되어 있으며, 이러한 특성에 영향을 미치는 여러가지 다양한 요인들에 대한 내용도 다방면의 연구를 통해 알려졌다. 유전과 잘못된 식습관, 칼슘과 마그네슘의 보충상태, 천식치료를 위한 albuterol의 복용 등은 골밀도의 매개 변수에 많은 영향을 미친다. 또한 골의 크기는 무게에 대한 골의 저항이 골의 지름의 크기에 관련이 크기 때문에 골의 저항력에 매우 중요한 영향을 미친다. 특히, 폐경은 골밀도의 빠른 감소를 가져오는 결과가 되는 순환 에스트로겐의 수준이 낮아지는 원인이... -
Graphitization of PAN-based carbon fibers by CO₂ laser irradiation
Liangbo Yao, Weimin Yang, Sanyang Li, Yang Sha, Jing Tan, Ying An, Haoyi Li 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 13 97-102 (6 pages)
Graphite fibers are materials with a high specific modulus that have attracted much interest in the aerospace industry, but their high manufacturing cost and low yield are still problems that prevent their wide applications in practice. This paper presents a laser-based process for graphitization of carbon fiber (CF) and explores the effect of laser radiation on the microstructure of CF. The obtained Raman spectra indicate that the outer surface of CF evolves from turbostratic structures into a... -
Hole quality assessment of drilled CFRP and CFRP-Ti stacks holes using polycrystalline diamond (PCD) tools
Dave Kim, Aaron Beal, Kiweon Kang, Sang-Young Kim 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 1 1-8 (8 pages)
Polycrystalline diamond (PCD) tools possessing high hardness and abrasive wear resistance are particularly suited for drilling of carbon fiber reinforced plastic (CFRP) composites, where tool life and consistent hole quality are important. While PCD presents superior performance when drilling CFRP, it is unclear how it performs when drilling multi-stack materials such as CFRP-titanium (Ti) stacks. This comparative study aims to investigate drilling of a Ti plate stacked on a CFRP panel when... -
EMI shielding effectiveness and mechanical properties of MWCNTs-reinforced biodegradable epoxy matrix composites
Yoon-Ji Yim, Dong Chul Chung, Soo-Jin Park 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 4 36-41 (6 pages)
Biodegradable epoxy (B-epoxy) was prepared from diglycidyl ether of bisphenol A and epoxidized linseed oil. The mechanical properties of B-epoxy composites reinforced with multi-walled carbon nanotubes (MWCNTs/B-epoxy) were examined by employing dynamic mechanical analysis, critical stress intensity factor (KIC) tests, and impact strength tests. The electromagnetic interference shielding effectiveness (EMI-SE) of the composites was evaluated using reflection and absorption methods. Mechanical... -
Thermoelectric Seebeck and Peltier effects of single walled carbon nanotube quantum dot nanodevice
H. A. El-Demsisy, M. D. Asham, D. S. Louis, A. H. Phillips 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 2 8-15 (8 pages)
The thermoelectric Seebeck and Peltier effects of a single walled carbon nanotube (SWCNT) quantum dot nanodevice are investigated, taking into consideration a certain value of applied tensile strain and induced ac-field with frequency in the terahertz (THz) range. This device is modeled as a SWCNT quantum dot connected to metallic leads. These two metallic leads operate as a source and a drain. In this three-terminal device, the conducting substance is the gate electrode. Another metallic gate... -
Effects of coal tar pitch addition on the wear behavior of carbon/carbon composites
Young Chan Jung, Duk Soo Kang, Kyong Yop Rhee, Soo Jin Park, David Hui 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2016, Vol.20 9 62-65 (4 pages)
Carbon/carbon (C/C) composites are acknowledged as high performance materials because of their good mechanical properties such as wear resistance, even at the higher temperature, due to their low thermal expansion [1-5]. Their hardness and light weight in addition to their superior mechanical properties at high temperature make C/C composites the best material to make brakes for aircrafts and other high weight vehicles. Accordingly, a number of studies have been conducted on the performance of...
