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A Fabrication Process of High Volume Fraction of Jute Fiber/Polylactide Composites for Truck Liner
Hu. Rui-Hua, Ma. Zhi-Guo, Zheng. Shuai, Li. Ya-Nan, Yang. Guo-Hua, Kim. Hee-Kyu, Lim. Jae-Kyoo 한국정밀공학회 International journal of precision engineering and manufacturing 4 Pages
한국정밀공학회 International journal of precision engineering and manufacturing 2012, Vol.13 No.7 1243-1246 (4 pages)
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부자(附子) Butanol fraction의 강심작용(强心作用)에 관한 연구(硏究)
홍사악(Hong S.A.), 박찬웅(Park C.W.), 김명석(Kim M.S.), 신상구(Shin S.G.), 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1975, 제 11권 제 1호 1 7-14 (8 pages)
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Effect of fiber-matrix adhesion on the fracture behavior of a carbon fiber reinforced thermoplastic-modified epoxy matrix
H.J. Carrillo-Escalante, A. ?lvarez-Castillo, A. Valadez-Gonz?lez, P. J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 6 47-56 (10 pages)
A carbon fiber with commercial sizing was used and also treated with a known silane, (3-glycidoxy propyl trimethoxysilane) coupling agent. Toughness was determined using the double cantilever test, together with surface analysis after failure using scanning electron microscope. The presence of polysulfone particles improved the fracture behavior of the composite, but fiber-matrix adhesion seemed to play a very important role in the performance of the composite material. There appeared to be a... -
The effects of stacking sequence on the penetration-resistant behaviors of T800 carbon fiber composite plates under low-velocity impact loading
Furqan Ahmad, Jung-Wuk Hong, Heung Soap Choi, Soo-Jin Park, Myung Kyun Park 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 6 107-115 (9 pages)
low-velocity impact load on carbon fiber reinforced polymer (CFRP) composite plates fabricated with various stacking sequences were studied experimentally. The impact responses of the CFRP composite plates were significantly affected by the laminate stacking sequences. Three types of specimens, specifically quasi-isotropic, unidirectional, and cross-ply, were tested by a constant impact carrying the same impact energy level. An impact load of 3.44 kg, corresponding to 23.62 J, was applied to the... -
Nitrogen Removal in Column Wetlands Packed with Synthetic Fiber Treating Piggery Stormwater
Jing Cheng, Youngchul Kim 한국습지학회 한국습지학회지 8 Pages
한국습지학회 한국습지학회지 2016, Vol.18 No.1 9 68-75 (8 pages)
in 2012. Synthetic fiber tested as an alternative wetland medium for soil mixture or gravel which has been widely used, has very high pore size and volume, so that clogging opportunity can be greatly avoided. The inflow to the wetland was artificial stormwater. All the wetlands achieved effective removal of TSS (94%~96%), TCOD (68%~73%), TN (35%~58%), TKN (62%~73%) and NH4-N (85%~ 99%). Particularly, it was observed that COD was released from the fiber during one distinct period in all wetlands.... -
Fabrication of carbon fiber SMC composites with vinyl ester resin and effect of carbon fiber content on mechanical properties
Haksung Lee, Mongyoung Huh, Jaeyoung Yoon, Dasom Lee, Seonyul Kim, Shinjae Kang 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 11 101-104 (4 pages)
strength and weight reduction make fiber composite materials an attractive replacement for metal components. The development of composites like carbon fiber reinforced plastic and related production technologies have contributed to the increasing application of fiber composite materials. Many new components have recently been adapted, including structural parts such as roof frames, under floors, trunk hoods and so on, using sheet molding compound (SMC) and resin transfer molding processes [1-5]. -
Development and clinical evaluation of a rapid diagnostic kit for feline leukemia virus infection
Won-Shik Kim, Chom-Kyu Chong, Hak-Yong Kim, Gyu-Cheol Lee, Wooseog Jeong, Dong-Jun An, Hye-Young Jeoung, Jae-In Lee, Young-Ki Le 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 1호 10 91-97 (7 pages)
Feline leukemia virus (FeLV) causes a range of neoplastic and degenerative diseases in cats. To obtain a more sensitive and convenient diagnosis of the disease, we prepared monoclonal antibodies specific for the FeLV p27 to develop a rapid diagnostic test with enhanced sensitivity and specificity. Among these antibodies, we identified two clones (hybridomas 8F8B5 and 8G7D1) that specifically bound to FeLV and were very suitable for a diagnostic kit. The affinity constants for 8F8B5 and 8G7D1... -
Birth of puppies after intrauterine and intratubal insemination with frozen-thawed canine semen
Hye Jin Kim, Hyun Ju Oh, Goo Jang, Min Kyu Kim 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2007, 제 8권 제 1호 11 75-80 (6 pages)
The present study was performed to assess the fertility of frozen-thawed dog semen prepared by freezing with 6% glycerol and thawing at 70ºC for 8 sec, and to evaluate the least number of post-thaw spermatozoa necessary to achieve pregnancy by intrauterine or intratubal artificial insemination. It was found that the pregnancy rate of intrauterine artificial insemination was 100% using 6% glycerol buffer and thawing at 70ºC for 8 sec with 5 × 107 spermatozoa. Even though the pregnancy rate... -
Growth performance and nutrient utilization in black Bengal bucks (Capra hircus) supplemented with graded doses of chromium as chromium chloride hexahydrate
Tarun K. Paul, Sudipto Haldar, Tapan K. Ghosh 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2005, 제 6권 제 1호 5 33-40 (8 pages)
< 0.001) and neutral detergent fiber (p <0.01) increased due to Cr supplementation. The apparent total tract digestibility of dry matter (p <0.01), organic matter (p <0.05), crude protein (p <0.001) and acid detergent fiber (p <0.01) improved and the total body weight gain and the live weight gain to feed intake ratio also increased (p <0.001) due to supplemental Cr feeding. The intake and apparent absorption (p < 0.001) of Cr was enhanced due to its supplementation. The intake of copper, zinc,... -
Superfecundation induction by intrauterine insemination with different frozen-thawed canine semen and parentage test using microsatellite analysis
Ji Hye Lee , Keun Jung Kim , Seon A Choi , Xiao Xia Li , Eun Young Kim , Hyun Ju Oh , Byeong Chun Lee , Hye Jin Kim , B 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 6 Pages
대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 2009, 제 49권 제 4호 3 285-290 (6 pages)
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Time-dependent proteomic and genomic alterations in Toll-like receptor-4-activated human chondrocytes: increased expression of lamin A/C and annexins
SeungHeeHa, HyoungKyuKim, NguyenThiTuyetAnh, NariKim, KyungSooKo, ByoungDooRhee, JinHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 16 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.5 8 531-546 (16 pages)
Activation of Toll-like receptor-4 (TLR-4) in articular chondrocytes increases the catabolic compartment and leads to matrix degradation during the development of osteoarthritis. In this study, we determined the proteomic and genomic alterations in human chondrocytes during lipopolysaccharide (LPS)-induced inflammation to elucidate the underlying mechanisms and consequences of TLR-4 activation. Human chondrocytes were cultured with LPS for 12, 24,and 36 h to induce TLR-4 activation. The... -
Voluntary stand-up physical activity enhances endurance exercise capacity in rats
DaeYunSeo, SungRyulLee, Hyo-BumKwak, KyoWonSeo, RobinAMcGregor, JiYoungYeo, TaeHeeKo, SaranhuuBolorerdene, NariKim, KyungSooKo, ByoungDooR 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.3 8 287-295 (9 pages)
Involuntary physical activity induced by the avoidance of electrical shock leads to improved endurance exercise capacity in animals. However, it remains unknown whether voluntary stand-up physical activity (SPA) without forced simulating factors improves endurance exercise capacity in animals. We examined the eff ects of SPA on body weight, cardiac function, and endurance exercise capacity for 12 weeks. Twelve male Sprague-Dawley rats (aged 8 weeks, n=6 per group) were randomly assigned to a... -
Improvement Characteristics of Bio-active Materials Coated Fabric on Rat Muscular Mitochondria
DongheeLee, Young-WonKim, Jung-HaKim, MisukYang, HyemiBae, InjaLim, HyoweonBang, Kyung-ChanGo, Gwang-WungYang, Yong-HwanRho, Hyo-SukPark, E 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.3 14 283-289 (7 pages)
This study surveys the improvement characteristics in old-aged muscular mitochondria by bio-active materials coated fabric (BMCF). To observe the effects, the fabric (10 and 30%) was worn to old-aged rat then the oxygen consumption efficiency and copy numbers of mitochondria, and mRNA expression of apoptosis- and mitophagy-related genes were verified. By wearing the BMCF, the oxidative respiration significantly increased when using the 30% materials coated fabric. The mitochondrial DNA copy... -
Modeling of Arrhythmogenic Automaticity Induced by Stretch in Rat Atrial Myocytes
JaeBoumYoum, ChaeHunLeem, YinHuaZhang, NariKim, JinHan, YungE.Earm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.5 8 267-274 (8 pages)
Since first discovered in chick skeletal muscles, stretch-activated channels (SACs) have been proposed as a probable mechano-transducer of the mechanical stimulus at the cellular level. Channel properties have been studied in both the single-channel and the whole-cell level. There is growing evidence to indicate that major stretch-induced changes in electrical activity are mediated by activation of these channels. We aimed to investigate the mechanism of stretch-induced automaticity by... -
Effects of PCB Congeners in Rodent Neuronal Cells in Culture
Sun-YoungKimJae-HoYang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 2 9-16 (8 pages)
We attempted to analyze the mechanism of polychlorinated biphenyl (PCB)-induced neurotoxicity and identify the target molecules in the neuronal cells for PCBs.Since the developing neuron is particularly sensitive to PCB-induced neurotoxicity, we isolated cerebellar granule cells derived from 7-day old Sprague Dawley (SD) rats and grew cells in culture for additional 7 days to mimic PND-14 conditions. Only non-coplanar PCBs at a high dose showed a significant increase of total protein kinase C... -
Comparative Study on the Nociceptive Responses Induced by Whole Bee Venom and Melittin
HongKeeShin, KyungHeeLee, SeoEunLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.5 7 281-288 (8 pages)
threshold of peripheral receptive field and induced flinching behaviors, but did not cause any increase in paw thickness. In the electrophysiological study, i.pl. injection of melittin increased discharge rates of dorsal horn neurons only with C fiber inputs from the peripheral receptive field, which were almost completely blocked by topical application of lidocaine to the sciatic nerve. These findings suggest that pain behaviors induced by WBV are mediated by melittin-induced activation of C... -
The Transfection of Caldesmon DNA into Primary Cultured Rat Aortic Vascular Smooth Muscle
WoongChoiHee-YulAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.6 8 597-603 (7 pages)
transfected cells when determined by [3H]thymidine uptake and cell counting after fetal bovine serum (FBS) stimulation. h-CaD/VSMCs were smaller than vector-transfected cells by 18% in cell diameter. These data suggest that overexpression of h-CaD can inhibit the poliferation and the cell volume of VSMCs stimulated by growth factors and that the gene therapy with h-CaD may be helpful to prevent the conditions associated with hypertrophy and/or hyperplasia of VSMCs after arterial injuries. -
Distribution, Content and Molecular Heterogeneity of Gastrin- Releasing Peptide in Rat Pancreas
HyungSeoParkHyoungJinPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.4 7 427-432 (6 pages)
Although importance of intrapancreatic neurons containing gastrin-releasing peptide (GRP) in control of exocrine secretion has been raised, the nature of GRP in the pancreas is unclear. Thus, the present study was undertaken to see distribution, content and molecular heterogeneity of immunoreactive GRP in the rat pancreas. Content of immunoreactive GRP in the rat pancreas was 2.99 ⁑ 0.66 ng/g wet tissues determined by radioimmunoassay. Immunoreactive GRP was most abundantly expressed in... -
Differential Effect of Homocysteic Acid and Cysteic Acid on Changes of Inositol Phosphates and [Ca2+]i in Rat Cerebellar Granule Cells
Won-KiKimYoung-SookPae 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.1 5 41-48 (8 pages)
of physiological sa1t solution maintained at 370C， and aerated with 95% 02/5% CO2. Isometric myography was -
Characteristics of A1 and A2 Adenosine Receptors upon the Acetylcholine Release in the Rat Hippocampus
DoKyungKim, YoungSooLee, BongKyuChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.1 4 31-39 (9 pages)
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精神科 入院患者의 自殺에 對한 몇 가지 臨床的 考察
李相換, 趙斗英 대한신경정신의학회 신경정신의학 7 Pages
대한신경정신의학회 신경정신의학 1981, 제 20권 제 1호 4 36-42 (7 pages)
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백서 대뇌피질에서 Opioid Kappa수용체의 Histamine 유리조절기능에 관한 연구
김기원(Kee-Won Kim), 조규박(Kyu-Park Cho) 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1994, 제 30권 제 1호 1 1-10 (10 pages)
Opioid 수용체에는 μ, δ 그리고 κ의 세가지 주된 형이 존재함이 알려져 있는 바, 최근 수용체 동정 기법과 선택적인 약물의 개발로 인해 그 아류들이 존재함이 보고되고 있다. 그러나 Opioid κ2-수용체의 기능에 대해서는 이 수용체에 있어서의 선택적인 효현제 또는 길항제가 밝혀져 있지 않으므로써 현재까지 잘 알려져 있지 않다. 본 연구에서는 백서 대뇌피질 세표막표본에 opioid μ와 δ 수용체를 과량의 DAMGO와 DPDPE로 봉쇄한 후 수종 κ수용체 결합자의 [3H] idprenorpnine(DIP) 결합억제효과와 이에 대한 sodium과... -
Na+ 및 K+에 의한 심장근 Mitochondria에서의 Ca++ 유리작용
김명석(Myung Suk Kim) 대한약리학회 대한약리학잡지 12 Pages
대한약리학회 대한약리학잡지 제 14권 제 1,2호 1 1-12 (12 pages)
가토 심실근에서 추출한 mitochondria에서 Na+ 및 K+이온에 의한 Ca++ 유리작용을 관찰하였다. 반응액에 첨가한 1-3mM의 소량 Na+은 mitochondria막에 미리 결합되어있던 Ca++을 현저히 유리시켰으며, K+은 단독으로는 Ca++ 유리를 유도하지 않았으나 Na+에 의한 Ca++ 유리에 대하여는 Na+/K+비에 따라 그것이 클수록 Ca++ 유리를 증가시켰다. 간 및 신장 mitochondria에서도 Na+에 의하 Ca++ 유리현상을 보였으나 심근mitochondria에 비하여 Na+에 대한 감수성이 훨씬 미약하여 약 1/10 ~ 1/5에 지나지 않았다. 이와같은 mitochondria의... -
약물상호작용(藥物相互作用)
조규철(Jo, Gyu-Cheol), 대한약리학회 대한약리학잡지 16 Pages
대한약리학회 대한약리학잡지 1972, 제 8권 제 2호 1 5-20 (16 pages)
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Mitochondria의 Calcium Uptake에 미치는 Ouabain의 영향
홍사악(Hong, Sa-Ack), 박찬웅(Park, Chan-Woong), 김명석(Kim, Myung-Suk), 정명희(Chung, Myung-Hee), 대한약리학회 대한약리학잡지 10 Pages
대한약리학회 대한약리학잡지 1972, 제 8권 제 1호 9 67-76 (10 pages)
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인삼(人蔘), reserpine, 및 chlorpromazine이 epinephrine 및 morphine 과혈당(過血糖)에 미치는 영향(影響)
정동균(Cheong, Dong-Kyun), 대한약리학회 대한약리학잡지 20 Pages
대한약리학회 대한약리학잡지 1965, 제 1권 제 1호 2 17-36 (20 pages)
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The Action of Acetylcholine on the End-Plate Potential
Koh, Il-Sup 대한생리학회 대한생리학회지 8 Pages
대한생리학회 대한생리학회지 1975, 제 9권 제 2호 6 41-48 (8 pages)
The failure of the action potential at the end-plate membrane to reach the sodium equilibrium potential is due to the stimulating action of acetylcholine on Na+-K+ pump. This action of acetylcholine causes an enormous increase in the K+ transport rate. The quantitative amount of potassium ions in the inside of the end-plate membrane prevented the permeability of sodium ions during the depolarization phase of the action potential. It would favor the changes in the shape of action potential by... -
철근콘크리트 연결보 대체상세의 구조성능 검증에 대한 실험적 연구
김선웅, 박완신, 장영일, 윤현도, 엄남용, 김선우 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 8 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2015, 제 5권 제 2호 22 199-206 (8 pages)
최근 들어 동북아 아시아 지역에 지진의 발생빈도가 급격하게 늘어나고 있는 상황이다. 지진 발생 시 수 많은 가옥의 붕괴, 사회기반 시설의 파괴는 물론 수많은 인명피해가 발생되고 있어 이에 따른 대책이 필요한 실정이다. 따라서 지진에 대해 효과적으로 거동하는 재료 및 구조시스템에 대한 연구 가 국내·외적으로 활발히 수행되고 있는 가운데 지진에 대해 효과적으로 거동하는 내진시스템 가운데 하나인 연결보에 대한 연구가 활발히 수행되고 있다.[1]. 그러나 이러한 연결보는 ACI 318-05 및 318-08 규준식에 의하면 폭이 좁은... -
Improvement of gas sensing properties of carbon nanofibers based on polyacrylonitrile and pitch by steam activation
Jeongsik Kim, Hyung-Il Kim, Jumi Yun 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 5 36-40 (5 pages)
nanofibers were activated with steam at various temperatures followed by subsequent carbonization to make carbon nanofibers with a highly conductive graphitic structure. Steam activation was effective in facilitating gas adsorption onto the carbon nanofibers due to the increased surface area. The carbon nanofibers activated at 800°C had a larger surface area and a lower micro pore fraction resulting in a higher variation in electrical resistance for improved CO gas sensing properties. -
Comparative numerical evaluation for the low velocity impact behavior of T300 and T800 composite system
Jae-Seok Choi, Heung Soap Choi, Soo-Jin Park, Myung Kyun Park 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 9 89-95 (7 pages)
and high rigidity [1]. In particular, the fuselage and wings of various aircraft, as well as the load bearing structures and components of mechanical and civil engineering systems are currently being manufactured with CFRP. However, even a low velocity impact on the carbon fiber reinforced composites can cause considerable damage, including matrix cracking, fiber failure and delamination [2-6]. These damages can result in the dramatic loss of strength and stiffness of the composites [7-9]. -
Green synthesis of fluorescent carbon dots from carrot juice for in vitro cellular imaging
Yang Liu, Yanan Liu, Mira Park, Soo-Jin Park, Yifan Zhang, Md Rashedunnabi Akanda, Byung-Yong Park, Hak Yong Kim 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 7 61-67 (7 pages)
We report the use of carrot, a new and inexpensive biomaterial source, for preparing high quality carbon dots (CDs) instead of semi-conductive quantum dots for bioimaging application. The as-derived CDs possessing down and up-conversion photoluminescence features were obtained from carrot juice by commonly used hydrothermal treatment. The corresponding physiochemical and optical properties were investigated by electron microscopy, fluorescent spectrometry, and other spectroscopic methods. The... -
Morphologies and surface properties of cellulose-based activated carbon nanoplates
Seulbee Lee, Min Eui Lee, Min Yeong Song, Se Youn Cho, Young Soo Yun, Hyoung-Joon Jin 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.20 5 32-38 (7 pages)
In this study, cellulose nanoplates (CNPs) were fabricated using cellulose nanocrystals obtained from commercial microcrystalline cellulose (MCC). Their pyrolysis behavior and the characteristics of the product carbonaceous materials were investigated. CNPs showed a relatively high char yield when compared with MCC due to sulfate functional groups introduced during the manufacturing process. In addition, pyrolyzed CNPs (CCNPs) showed more effective chemical activation behavior compared with... -
Effects of cross-linking methods for polyethylene-based carbon fibers: review
Kwan-Woo Kim, Hye-Min Lee, Jeong-Hun An, Byoung-Suhk Kim, Byung-Gak Min, Shin-Jae Kang, Kay-Hyeok An, Byung-Joo Kim 한국탄소학회 Carbon Letters 24 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.3 2 147-170 (24 pages)
In recent decades, there has been an increasing interest in the use of carbon fiber reinforced plastic (CFRP) in aerospace, renewable energy and other industries, due to its low weight and relatively good mechanical properties compared with traditional metals. However, due to the high cost of petroleum-based precursors and their associated processing costs, CF remains a specialty product and as such has been limited to use in high-end aerospace, sporting goods, automotive, and specialist... -
Effects of comonomer with carboxylic group on stabilization of high molecular weight polyacrylonitrile nanofibrous copolymers
Danyun Lei, Kesavan Devarayan1, Xiang-Dan Li, Woong-Ki Choi, Min-Kang Seo and Byoung-Suhk Kim 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 9 290-294 (5 pages)
New precursors, poly(acrylonitrile-co-crotonic acid) (poly(AN-CA)) and poly(acrylonitrile-co-itaconic acid-co-crotonic acid) (poly(AN-IA-CA)) copolymers, for the preparation of carbon fibers, were explored in this study. The effects of comonomers with acidic groups, such as crotonic acid (CA) and/or itaconic acid (IA), on the stabilization of nanofibrous polyacrylonitrile (PAN) copolymers were studied. The extent of stabilization, evaluated by Fourier transform infrared spectroscopy, revealed... -
Overlook of carbonaceous adsorbents and processing methods for elemental mercury removal
Kyong-Min Bae, Byung-Joo Kim and Soo-Jin Park 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 2 238-246 (9 pages)
People have been concerned about mercury emissions for decades because of the extreme toxicity, persistence, and bioaccumulation of methyl Hg transformed from emitted Hg. This paper presents an overview of research related to mercury control technology and identifies areas requiring additional research and development. It critically reviews measured mercury emissions progress in the development of promising control technologies. This review provides useful information to scientists and engineers... -
Pitch based carbon fibers for automotive body and electrodes
Kap Seung Yang, Bo-Hye Kim, Seong-Ho Yoon 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.3 2 162-170 (9 pages)
They also recommended the use of carbon fiber with strength of 1700 MPa, modulus of 170 GPa, and 1.5% elongation. This study introduced a ca. 5.5 μm carbon fiber with 2000 MPa tensile strength obtained from a precursor through simple distillation of petroleum residue. Petroleum pitch based carbon nanofibers prepared via electrospinning were characterized and potential applications were introduced on the basis of their large specific surface area and relatively high electrical conductivity. -
Facile preparation of self-assembled wool-based graphene hydrogels by electron beam irradiation
Mira Park, Bishweshwar Pant, Jawun Choi, Yong Wan Park, Chohye Lee, Hye Kyoung Shin, Soo-Jin Park4, Hak-Yong Kim 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 11 136-141 (6 pages)
and Fourier-transform infrared spectroscopy; to determine the gel fraction, degree of swelling, gel strength, kinetics-of-swelling analyses and removal of hexavalent chromium (Cr(VI)) from the aqueous solution. X-ray diffraction results confirmed that EBI played a significantly important role in reducing GO to graphene. The adsorption equilibrium of Cr(VI) was reached within 80 min and the adsorption capacity was dramatically increased as the acidity of the initial solution was decreased from pH... -
Superhydrophobic carbon-based materials: a review of synthesis, structure, and applications
Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 16 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 5 89-104 (16 pages)
Materials with appropriate surface roughness and low surface energy can form superhydrophobic surfaces, displaying water contact angles greater than 150°. Superhydrophobic carbon-based materials are particularly interesting due to their exceptional physicochemical properties. This review discusses the various techniques used to produce superhydrophobic carbon-based materials such as carbon fibers, carbon nanotubes, graphene, amorphous carbons, etc. Recent advances in emerging fields such as... -
Effect of chemically reduced graphene oxide on epoxy nanocomposites for flexural behaviors
Seul-Yi Lee, Mi-Hwa Chong, Mira Park, Hak-Yong Kim, Soo-Jin Park 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.1 9 67-70 (4 pages)
In this work, nanocomposites of epoxy resin and chemically reduced graphene oxide (RGO) were prepared by thermal curing process. X-ray diffractions confirmed the microstructural properties of RGO. Differential scanning calorimetry was used to evaluate the curing behaviors of RGO/epoxy nanocomposites with different RGO loading amounts. We investigated the effect of RGO loading amounts on the mechanical properties of the epoxy nanocomposites. It was found that the presence of RGO improved both...
