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Hierarchical porous carbon nanofibers via electrospinning
Aikifa Raza, Jiaqi Wang, Shan Yang, Yang Si, Bin Ding 한국탄소학회 Carbon Letters 14 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.1 1 1-14 (14 pages)
Carbon nanofibers (CNFs) with diameters in the submicron and nanometer range exhibit high specific surface area, hierarchically porous structure, flexibility, and super strength which allow them to be used in the electrode materials of energy storage devices, and as hybrid-type filler in carbon fiber reinforced plastics and bone tissue scaffold. Unlike catalytic synthesis and other methods, electrospinning of various polymeric precursors followed by stabilization and carbonization has become a... -
소용량 및 대용량 탄화로에서 제조된 소나무 수피탄의 특성
문성필, 황의도, 박상범, 권수덕 한국산림바이오에너지학회 임산에너지 9 Pages
한국산림바이오에너지학회 임산에너지 2002, Vol.21 No.2 1-9 (9 pages)
16 - 18％더 높았다. 제조된 수피탄의 BET 비표면적은 탄화수율 약 35 - 40％에서 약400 - 500㎡／g 을 나타내었다. 600℃ 30분의 탄화조건에서 제조된 소나무 목부탄은 미세공이 많이 발달해 있었으나, 동일조건에서 제조된 수피탄이 경우 미세공은 물론 중세공도 많이 존재하였다. 대형 탄화로에서 제조된 수피탄의 탄화 수율 및 요오드가 및 BET 비표면적은 소용량 탄화로의 결과와 매우 유사하였다. 이러한 결과는 소나무 수피가 높은 비표면적과 수율을 가지는 양질의 숯을 생산 할 수 있는 원료로 사용될 수 있음을 나타낸다. -
화염법으로 제조된 감마-Al2O3 나노입자의 화염조건에 따른 입자특성 연구
이교우, Lee. Gyo-Woo 대한기계학회 大韓機械學會論文集. Transactions of the Korean society of mechanical engineers. B. B 7 Pages
대한기계학회 大韓機械學會論文集. Transactions of the Korean society of mechanical engineers. B. B 2012, Vol.36 No.5 509-515 (7 pages)
각각의 실험조건에서 1507.8K, 1593.8K, 1753.1K, 1998.7K으로 측정되었다. SEM 이미지 분석 및 BET 비표면적 측정을 통해서는 47% 산소농도인 경우에는 50 nm 수준의 독립적인 구형입자가 생성되었음을 확인할 수 있었으며, 19%와 21%의 경우에는 응집된 상태의 20-30 nm 수준의 입자를 볼 수 있었다. XRD 결과에서는 감마(${gamma}$)-알루미나가 주를 이루는 것으로 판단되었다. 이상의 결과를 바탕으로 촉매 담체로 사용하기 위한 알루미나 나노입자를 연소합성 하기 위한 가장 적절한 조건으로 실험했던 네 경우 중에서는 산화제의... -
Neuroprotective Effects of AMP-Activated Protein Kinase on Scopolamine Induced Memory Impairment
Soo-JeongKim, Jun-HoLee, Hwan-SuckChung, Joo-HyunSong, JoohunHa, HyunsuBae 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.4 11 331-338 (8 pages)
AMP-activated protein kinase (AMPK), an important regulator of energy metabolism, is activated in response to cellular stress when intracellular levels of AMP increase. We investigated the neuroprotective effects of AMPK against scopolamine-induced memory impairment in vivo and glutamate-induced cytotoxicity in vitro. An adenovirus expressing AMPK wild type alpha subunit (WT) or a dominant negative form (DN) was injected into the hippocampus of rats using a stereotaxic apparatus. The AMPK... -
Aggressiveness in Plasmopara halstedii (sunflower downy mildew)
한국식물병리학회 The Plant Pathology Journal 6 Pages
한국식물병리학회 The Plant Pathology Journal 2011, 27권 2호 2 110-115 (6 pages)
Aggressiveness was studied in seven Plasmopara halstedii (sunflower downy mildew) pathotypes: 100, 300, 304, 314, 704, 710 and 714. Aggressiveness criteria including percentage infection, latent period, sporulation density and reduction of hypocotyl length (dwarfing) were analysed in one sunflower inbred line showing a high level of quantitative resistance. Genetic relationships were detected between the seven pathotypes using 12 ESTderived markers. Pathotypes 100, 300, 304 and 314 were... -
Suppression of Bipolaris Stem Rot on Cactus by Heat-inactivated Conidial Suspension of Bipolaris cactivora
한국식물병리학회 The Plant Pathology Journal 7 Pages
한국식물병리학회 The Plant Pathology Journal 2010, 26권 3호 4 231-237 (7 pages)
pathogen-specific. HICS significantly reduced severities of the stem rot disease on several cactus species including Hylocereus trigonus, Cereus peruvianus, Chamaecereus silvestrii and Gymnocalycium mianovichii, but not on Cereus tetragonus. Extensive wound periderms were formed in the stem tissues of inoculation and/or wounding sites on C. peruvianus treated with HICS alone or prior to the pathogen inoculation, but not on C. tetragonus, indicating the structural modifications may be related to... -
CD40 Co-stimulation Inhibits Sustained BCR-induced Ca2＋ Signaling in Response to Long-term Antigenic Stimulation of Immature B Cells
YenHoangNguyen, Ki-YoungLee, TaeJinKim, SungJoonKim, TongMookKang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.3 9 179-187 (9 pages)
Regulation of B cell receptor (BCR)-induced Ca2＋ signaling by CD40 co-stimulation was compared in long-term BCR-stimulated immature (WEHI-231) and mature (Bal-17) B cells. In response to long-term pre-stimulation of immature WEHI-231 cells to Ձ-IgM antibody (0.5∼48 hr), the initial transient decrease in BCR-induced [Ca2＋]i was followed by spontaneous recovery to control level within 24 hr. The recovery of Ca2＋ signaling in WEHI-231 cells was not due to restoration of internalized...
