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Characterization and influence of shear flow on the surface resistivity and mixing condition on the dispersion quality of multi-walled carbon nanotube/polycarbonate nanocomposites
Young Sil Lee, Kwan Han Yoon 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 3 86-92 (7 pages)
Multi-walled carbon nanotube (MWCNT)/polycarbonate (PC) nanocomposite was prepared by direct melt mixing to investigate the effect of the shear rate on the surface resistivity of the nanocomposites. In this study, an experiment was carried out to observe the shear induced orientation of the MWCNT in the polymer matrix using a very simple melt flow indexer with various loads. The compression-molded, should be eliminated. MWCNT/PC nanocomposite sample exhibited lower percolation thresholds (at 0.8... -
Super-High Speed Photo detection through Frequency Conversion for Microwave on Optical Network
Choi. Young-Kyu, Shin. Sang-Yeol 한국해양정보통신학회 International journal of maritime information and communication sciences 5 Pages
한국해양정보통신학회 International journal of maritime information and communication sciences 2008, Vol.6 No.4 439-443 (5 pages)
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Properties of multi-walled carbon nanotube reinforced epoxy composites fabricated by using sonication and shear mixing
Min Ye Koo, Hon Chung Shin, Won-Seok Kim and Gyo Woo Lee 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 4 255-261 (7 pages)
Multi-walled carbon nanotube reinforced epoxy composites were fabricated using shear mixing and sonication. The mechanical, viscoelastic, thermal, and electrical properties of the fabricated specimens were measured and evaluated. From the images and the results of the measurements of tensile strengths, the specimens having 0.6 wt% nanotube content showed better dispersion and higher strength than those of the other specimens. The Young’s moduli of the specimens increased as the nanotube filler... -
가상현실(VR) 및 증강현실(AR)의 명상교육 활용가능성에 대한 고찰
한국종교교육학회 종교교육학연구 2017, 제 54권 6 97-116 (20 pages)
본 논문의 주제는 가상현실(VR)과 증강현실(AR) 등의 4차산업혁명의 핵심기술들을 명상교육의 현장에서 활용할 수 있는 가능성을 모색하는 것이다. 본 논문에서는 우선 기존에 실행되었던 기구를 통한 명상체험 유도사례를 고찰하고, 공감각 소 유자들이 지니는 특수한 능력을 AR에서 재현할 수 있는 가능성을 모색하며, 실제 스포츠 훈련이 나 심리치료에 활용되고 있는 사물인터넷(Iot)나 가상현실 기술에 대해서 살펴봄으로써 명상교육에 가성현실과 증강현실을 활용할 수 있는 가능성의 이론적 근거를 찾고자 한다. 본격적으로... -
Betulinic acid prevents alcohol-induced liver damage by improving the antioxidant system in mice
Jine Yi*, Wei Xia, Jianping Wu, Liyun Yuan, Jing Wu, Di Tu, Jun Fang, Zhuliang Tan* 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 1호 16 141-148 (8 pages)
Betulinic acid (BA), a pentacyclic lupane-type triterpene, has a wide range of bioactivities. The main objective of this work was to evaluate the hepatoprotective activity of BA and the potential mechanism underlying the ability of this compound to prevent liver damage induced by alcohol in vivo. Mice were given oral doses of BA (0.25, 0.5, and 1.0 mg/kg) daily for 14 days, and induced liver injury by feeding 50% alcohol orally at the dosage of 10 ml/kg after 1 h last administration of BA. BA... -
Studies on sodium and potassium metabolism and subsequent influence on electrocardiogram in unilaterally adrenalectomized black Bengal goat (Capra hircus)
G. D.V. Pandiyan, P. R. Ghosh, B. C. Das, P. K. Das, S. Sanyal 대한수의학회 Journal of Veterinary Science 5 Pages
대한수의학회 Journal of Veterinary Science 2005, 제 6권 제 4호 2 273-277 (5 pages)
Unilateral adrenalectomy was performed in six black Bengal goat (Capra hircus)to study electrocardiograph in connection with mineral metabolism with special reference to sodium and potassium and some other factors of physiological importance. The parameters were studied at every 12 hrs interval upto 120 hrs and 24 hrs interval from 120 to 240 hrs.Physiological parameters, like body weight and rectal temperature, changed non-significantly (p<0.05)after adrenalectomy.Among minerals, plasma sodium... -
모바일 앱을 활용한 음악수업의 동향연구
김수연, 김민정 한국음악교육학회 음악교육연구 27 Pages
한국음악교육학회 음악교육연구 2020, 제 49권 제 2호 2 41-67 (27 pages)
본 연구는 음악수업에서 활용되는 모바일 앱의 경향을 분석하여, 음악 교수자들이 음악 수업 영역별 활동에 맞는 모바일 앱을 효과적으로 활용할 수 있는 시사점을 제공하는 것을 목적으로 하고 있다. 이와 같은 목적을 위하여 조건에 맞는 최종 43편의 논문을 선정하였다. 최종 선정된 43편의 논문은 학술지 7편, 학위논문 36편으로 구성되어 있었으며, 중학생을 학습대상으로 한 연구가 21편으로 가장 많았다. 구체적으로, 음악교육 영역별 모바일 앱의 활용은 창작 영역이 가장 많았고, 기악, 교과연계, 가창, 감상 순으로 나타났다.... -
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... -
Modern Methods for Analysis of Antiepileptic Drugs in the Biological Fluids for Pharmacokinetics, Bioequivalence and Therapeutic Drug Monitoring
JuseopKang, Yoo-SinPark, Shin-HeeKim, Sang-HyunKim, Min-YoungJun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 16 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2011, Vol.15 No.2 1 67-82 (16 pages)
Epilepsy is a chronic disease occurring in approximately 1.0% of the world's population. About 30% of the epileptic patients treated with availably antiepileptic drugs (AEDs) continue to have seizures and are considered therapy-resistant or refractory patients. The ultimate goal for the use of AEDs is complete cessation of seizures without side effects. Because of a narrow therapeutic index of AEDs, a complete understanding of its clinical pharmacokinetics is essential for understanding of the... -
Effect of Defibrotide on Rat Reflux Esophagitis
HyoungKiKim, SooRanChoi, SangJinChoi, MyungSupChio, YongKyooShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.6 5 319-328 (10 pages)
This study was aimed at evaluating the effect of defibrotide on the development of the surgically induced reflux esophagitis, on gastric secretion, lipid peroxidation, polymorphonuclear leukocytes (PMNs) accumulation, polymorphonuclear leukocytes adherence, superoxide anion and hydrogen peroxide production in PMNs, scavenge of hydroxyl radical and hydrogen peroxide, cytokine (interleukin-1β, tumor necrosis factor-α) production in blood, and intracellular calcium mobilization in PMNs.... -
뇌허혈 손상에 있어서 해마-세포외액내 Glutamate와 Polyamine 농도의 변동에 관한 연구
신경호(Kyung-Ho Shin), 김형건(Hyung-Gun Kim), 최상현(Sang-Hyun Choi), 조소현(So-Hyun Cho), 천연숙(Yeon-Sook Chun), 전보권(Boe-Gwun Chun) 대한약리학회 대한약리학잡지 18 Pages
대한약리학회 대한약리학잡지 1994, 제 30권 제 3호 2 273-290 (18 pages)
뇌-허혈후 나타나는 신경세포의 손상에 glutamate의 과다한 유리와 그의 N-methyl-D-aspartate (NMDA) 수용체: calcium 통로 활성작용 및 polyamine중 putrescine의 증가로 인한 신경세포내 [Ca2+]의 상승과 관련 있다는 보고들이 있다. 본 연구에서는 Mongolian gerbil에서 5분간 경동맥을 차단하여 뇌-허혈을 가한후 재관류시 해마의 세포외액내 polyamine, glutamate, acetylcholine농도, 해마의 [3H]MK-801 결합능의 변동 및 해마조직소견의 변동에 미치는 비가역성 ornithine decarboxylase (ODC) 억제제인 difluoromethylornithine... -
Rapid Measurement of NH3 and Weak Acid Permeation Through Liposomes and Renal Proximal Tubule Membranes
Bae, Hae-Rahn, Suh, Duck-Joon, Lee, Sang-Ho 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 11 203-214 (12 pages)
of nonionized formic acid and initial rate of flux of formic acid in liposome, and the slope coincided with the value of permeability coefficient of formic acid measured in pH 7.0. These results show that techniques of stopped-flow and epifluorescence microscopy with entrapped fluorophore provide the precise method of measurement of very rapid transport of nonelectrolytes through membranes with the advantages of instantaneous mixing effect, good resolution time and easy manipulation. -
Different Phytohormonal Responses on Satsuma Mandarin (Citrus unshiu) Leaves Infected with Host-Compatible or Host-Incompatible Elsino? fawcettii
Kihye Shin, Dilli Prasad Paudyal, Seong Chan Lee, Jae Wook Hyun 한국식물병리학회 The Plant Pathology Journal 12 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 3호 6 268-279 (12 pages)
Citrus scab, caused by the fungal pathogen Elsinoë fawcettii, is one of the most important fungal diseases affecting Citrus spp. Citrus scab affects young tissues, including the leaves, twigs, and fruits, and produces severe fruit blemishes that reduce the market value of fresh fruits. To study the molecular responses of sat- suma mandarin (C. unshiu) to E. fawcettii, plant hor- mone-related gene expression was analyzed in response to host-compatible (SM16-1) and host-incompatible... -
Natural Variation in Virulence of Acidovorax citrulli Isolates That Cause Bacterial Fruit Blotch in Watermelon, Depending on Infection Routes
Yu-Rim Song, In Sun Hwang, Chang-Sik Oh 한국식물병리학회 The Plant Pathology Journal 14 Pages
한국식물병리학회 The Plant Pathology Journal 2020, 36권 1호 3 29-42 (14 pages)
Acidovorax citrulli causes bacterial fruit blotch in Cucurbitaceae, including watermelon. Although A. citrulli is a seed-borne pathogen, it can cause diverse symptoms in other plant organs like leaves, stems and fruits. To determine the infection routes of A. citrulli, we examined the virulence of six isolates (Ac0, Ac1, Ac2, Ac4, Ac8, and Ac11) on watermelon using several inoculation methods. Among six isolates, DNA polymorphism reveals that three isolates Ac0, Ac1, and Ac4 belong to Clonal... -
Detection of Clavibacter michiganensis subsp. michiganensis Assisted by Micro- Raman Spectroscopy under Laboratory Conditions
Moisé, s Roberto Vallejo Pé, rez, Hugo Ricardo Navarro Contreras, Jesú, s A. Sosa Herrera, José, Pablo Lara Á, vila 한국식물병리학회 The Plant Pathology Journal 12 Pages
한국식물병리학회 The Plant Pathology Journal 2018, 34권 5호 4 381-392 (12 pages)
days after the epidemic was induced. Micro-Raman spectroscopy proved its speed, efficiency and usefulness as a non-destructive method for the preliminary detection of Cmm. Carotenoid specific bands with wavelengths at 1146 and 1510 cm-1 were the distinguishable markers. Chemometric analyses showed the best performance by the implementation of PCA-LDA supervised classification algorithms applied over Raman spectrum data with 100% of performance in metrics of classifiers (sensitivity, specificity,... -
Gaussian Profile based Vehicular Mobility Modeling
Brijesh Kumar Chaurasia, Shekhar Verma, G. S. Tomar 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 18 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2011, 제 1권 제 2호 2 59-76 (18 pages)
The driving behavior of a person is influenced by a multitude of local and global factors. These include nature of the driver, distance between the source and destination, condition of the road selected by the driver, traffic conditions, time constraints, lane changing, overtaking actions, safe distance, reaction time etc. are vital for modeling the mobility of a vehicle and are largely determined by the driving behavior. In this paper, a profile based model has been proposed to define the... -
XBox Kinect를 이용한 가상현실 훈련이 뇌졸중 환자의상지 기능과 일상생활활동에 미치는 효과
이다솜(Lee Da-Som), 김덕주(Kim Deok-Ju) 대한고령친화산업학회 대한고령친화산업학회지 11 Pages
대한고령친화산업학회 대한고령친화산업학회지 2018, 제 10권 제 2호 6 53-63 (11 pages)
목적: 본 연구는 가상현실 훈련이 뇌졸중 환자의 상지 기능과 일상생활활동 수행능력에 미치는 효과를 알아보고자 실시하였다.\n연구방법: 본 연구는 2018년 4월 1일부터 5월 1일까지 경기도 양평군 소재의 N 재활병원에서 작업치료를 받는 뇌졸중 환자 4명을 대상으로 하였다. 대상자들을 실험군, 대조군 두 그룹으로 나누었으며, 각각 4주간 주2회, 1회 30분씩 실시하였다. 실험군은 일반 재활치료와 XBox Kinect를 이용한 가상현실 훈련을 함께진행하였으며, 대조군은 일반 재활치료만 실시하였다. 연구 진행 전·후, 대상자들의... -
굴 패각의 자원 재활용 방안에 관한 연구
박승철, 정진도, 조환성, 서란숙 한국열환경공학회 한국열환경공학회 학술대회지 7 Pages
한국열환경공학회 한국열환경공학회 학술대회지 2015년 춘계 48 316-322 (7 pages)
동서고금을 막론하고 예부터 오늘날까지 건강식품으로써 각광받고 있는 굴은 소비량이 증가함에 따라 양식을 통해 수요를 충족해 왔다. 소비자 수요를 충족하는 것만 생각하여 시작된 굴 양식은 가공과정에 서 발생되는 굴 패각으로 인한 환경적 악영향을 고민하게 되었다. 대표적인 환경적 영향은 굴 패각에 부착된 육질부패로 인한 악취, 침출수 등이 있고, 나아가 연안 어장의 오염과 공유수면 관리상의 문제 및 자연경관을 훼손하는 원인이 되고 있다. 따라서 적정한 처리가 요구되는 실정이나 굴 패각은 폐기물 관리법에 의거... -
Impact of single metal oxide and coal ash on secondary ultrafine particle generation through SO2 and NO2 heterogeneous reaction
Ru-Jiao Song, Zi-Xiang Xu, Joo-Chang Park, Li-Hua Xu, Hyung-Taek Kim 한국열환경공학회 열환경공학 19 Pages
한국열환경공학회 열환경공학 2020, 제 15권 1호 4 28-46 (19 pages)
Particulate matter research is of great significance in solving atmospheric environment problems. The heterogeneous reaction of mixed gas on different mineral oxides and coal ash was studied based on a laboratory-built aerosol generating reactor. The product formed on particles was investigated by ion chromatography (IC). SO2 and NO2 could react on oxides to form secondary particles and the order of reactivity of mineral oxides under laboratory reaction conditions is: Al2O3>MgO>CaO>>SiO2, Fe2O3.... -
Flexural, electrical, thermal and electromagnetic interference shielding properties of xGnP and carbon nanotube filled epoxy hybrid nanocomposites
Young Sil Lee, Yeon Ho Park, Kwan Han Yoon 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 6 41-46 (6 pages)
The microstructure, flexural properties, electrical conductivity, thermal conductivity and electromagnetic interference (EMI) shielding effectiveness (SE) of epoxy composites filled with multi-walled carbon nanotubes (CNTs), exfoliated graphite nanoplatelets (xGnPs) and CNT-xGnP hybrid filler were investigated. The EMI SE of the CNT-xGnP hybrid composite was higher than 25 dB at 100 MHz while that of the xGnP based composite was almost zero. The flexural modulus of the CNT-xGnP based epoxy... -
Effect of the surface modification using MWCNTs with different L/D by two different methods of deposition on the IFSS of single carbon fiber-epoxy resin composite
Minerva L. Herrera-Sosa, Alex Valadez-Gonz?lez, Humberto V?zquez-Torres, Pierre G. Mani-Gonz?lez, Pedro J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 3 18-27 (10 pages)
Multiwall carbon nanotubes (MWCNT) with two different (L/D) aspect ratios (7±2 μm/140±30 nm and 0.5?2 μm/8?15 nm) were surface treated using nitric acid (HNO3) and polyethyleneimine (PEI) prior to their deposition on carbon fibers (CF). Before the hierarchical reinforcement with CF-MWCNT, the CFs were treated with 3-glycidoxypropyltrimethoxysilane, a coupling agent (Z6040) and with poly(amidoamine) (PAMAM) a dendrimer containing an ethylenediamine core and amine surface groups. The MWCNT... -
Mechanical and electrical properties of cement paste incorporated with pitch-based carbon fiber
Inkyu Rhee, Jin Hee Kim, Sang Hee Park, Sungho Lee, Bong Ryeul Ryu, Yoong Ahm Kim 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 4 22-29 (8 pages)
The compressive strength and electrical resistance of pitch-based carbon fiber (CF) in cementitious materials are explored to determine the feasibility of its use as a functional material in construction. The most widely used CFs are manufactured from polyacrylonitrile (PAN-based CF). Alternatively, short CFs are obtained in an economical way using pitch as a precursor in a melt-blown process (pitch-based CF), which is cheaper and more eco-friendly method because this pitch-based CF is basically... -
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...
