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본문검색 결과만 보기
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EQUIVALENT MATERIAL PROPERTIES OF PERFORATED PLATE WITH TRIANGULAR OR SQUARE PENETRATION PATTERN FOR DYNAMIC ANALYSIS
Jhung. Myung-Jo, Jo. Jong-Chull 한국원자력학회 Nuclear engineering and technology : an international journal of the Korean Nuclear Society 8 Pages
한국원자력학회 Nuclear engineering and technology : an international journal of the Korean Nuclear Society 2006, Vol.38 No.7 689-696 (8 pages)
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Anti-Inflammatory and Anti-Superbacterial Properties of Sulforaphane from Shepherd’s Purs
WooJinChoi, SeongKeunKim, HeeKukPark, UyDongSohn, WonyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.1 4 33-39 (7 pages)
sulforaphane. In this study, we evaluated the anti-inflammatory and antibacterial properties of a sulforaphane-containing solution (SCS) isolated from shepherd’s purse. SCS had significant anti-inflammatory activity indicated by the decreased levels of nitric oxide (NO), cytokines (interleukin 1β [IL-1β], IL-6, and IL-10), and prostaglandin E2 (PGE2) in lipopolysaccharide-stimulated RAW 264.7 murine macrophages. In addition, SCS decreased the inducible NO synthase (iNOS) and cyclooxygenase 2... -
Preparation and application of reduced graphene oxide as the conductive material for capacitive deionization
Ayu Tyas Utami Nugrahenny, Jiyoung Kim, Sang-Kyung Kim, Dong-Hyun Peck, Seong-Ho Yoon, Doo-Hwan Jung 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.1 5 38-44 (7 pages)
a thermal method. The physical and electrochemical characteristics of RGO material were evaluated and its desalination performance was tested with a CDI unit cell with a potentiostat and conductivity meter, by varying the applied voltage and feed rate of the salt solution. The performance of RGO was compared to graphite as a conductive material in a CDI electrode. The result showed RGO can increase the capacitance, reduce the equivalent series resistance, and improve the electrosorption capacity... -
Thermal Insulation Properties of Epoxy/Mesoporous Carbon Composites
허건영, 서민강, 오상엽, 최경은, 박수진 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2011, Vol.12 No.1 10 53-56 (4 pages)
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Influence of ionic liquid additives on the conducting and interfacial properties of organic solvent-based electrolytes against an activated carbon electrode
Kyungmin Kim, Yongju Jung, Seok Kim 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.3 5 187-191 (5 pages)
This study reports on the influence of N-butyl-N-methylpyrrolidinium tetrafluoroborate (PYR14BF4) ionic liquid additive on the conducting and interfacial properties of organic solvent based electrolytes against a carbon electrode. We used the mixture of ethylene carbonate/dimethoxyethane (1:1) as an organic solvent electrolyte and tetraethylammonium tetrafluoroborate (TEABF4) as a common salt. Using the PYR14BF ionic liquid as additive produced higher ionic conductivity in the electrolyte and... -
Physical-chemical and biological characterization of different preparations of equine chorionic gonadotropin
Rafael Herrera Alvarez, Fabio Luis Nogueira Natal, Maria Teresa Carvalho Pinto Ribela, Beatriz Elane de Almeida, Jo?o Ezequiel d 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 4호 4 459-465 (7 pages)
Ovarian stimulation with commercial preparations of equine chorionic gonadotropin (eCG) produces extremely variable responses in domestic animals, ranging from excessive stimulation to practically no stimulation, when applied on the basis of their declared unitage. This study was conducted to analyze four commercial preparations from different manufacturers via reversed-phase HPLC (RP-HPLC) in comparison with a reference preparation and an official International Standard from the World Health... -
Immunomodulatory effects of betulinic acid from the bark of white birch on mice
Jin-e Yi, Bozena Obminska-Mrukowicz, Li-yun Yuan, Hui Yuan* 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2010, 제 11권 제 4호 5 305-313 (9 pages)
The objective of this study was to explore the immunomodulatory effects of betulinic acid (BA) extracted from the bark of white birch on mice. Female mice were orally administered BA for 14 days in doses of 0, 0.25, 0.5, and 1 mg/kg body weight. We found that BA significantly enhanced the thymus and spleen indices, and stimulated lymphocyte proliferation induced by Concanavalin A and lipopolysaccharide as shown by MTT assay. Flow cytometry revealed that BA increased the percentage of CD4 cells... -
Immunologic reactivity of a lipopolysaccharide-protein complex of type A Pasteurella multocida in mice
Hyo-ik Ryu, Chul-joong Kim 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2000, 제 1권 제 2호 5 87-95 (9 pages)
The immunologic reactivity of a lipopolysaccharide (LPS)-protein complex isolated from a potassium thiocyanate extract of a Pasteurella multocida (capsular type A and somatic type 3) strain was evaluated in mice. The LPS-protein complex provided 100% protection in mice against a challenge with the homologous strain. However, when the complex was fractionated into LPS and protein moieties by phenol-water treatment, both components lacked immunogenicity. The complex and extracted components were... -
시각장애 음악전공자들의 회고를 바탕으로 한 음악 교수방법론 탐색
김미정(Mi Jung Kim), 박휴용(Hyu Yong Park) 한국음악교육학회 음악교육연구 32 Pages
한국음악교육학회 음악교육연구 2013, 제 42권 제 3호 6 151-182 (32 pages)
본 논문은 시각장애를 가진 음악가 혹은 학생들이 음악을 가르치고 익히는 과정에 활용하는 네 가지의 교수수단, 즉 청각입력을 통한 암기, 구두지도, 촉각정보, 그리고 기술적 도구들에 대해 논의하였다. 본 논문은 시각장애인이 이러한 교수수단을 통해 음악을 익히는 과정을 매개(mediation), 숙달(mastery)과 전유(appropriation)의 개념적 틀을 통해 분석하였으며, 이 네 가지 방법들이 매개수단(mediational means)으로써 음악을 배우고 익히는데 활용되고 있음을 논의하였다. 저자들은 참여연구를 통해서 서울의 한 맹학교... -
High K＋-Induced Relaxation by Nitric Oxide in Human Gastric Fundus
DaeHoonKim, YoungChulKim, WoongChoi, Hyo-YoungYun, RohyunSung, HunSikKim, HeonKim, RaYoungYoo, Seon-MeePark6, SeiJinYun6, Young-JinSong, We 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.5 2 297-303 (7 pages)
This study was designed to elucidate high K＋-induced relaxation in the human gastric fundus. Circular smooth muscle from the human gastric fundus greater curvature showed stretch-dependent high K＋ (50 mM)-induced contractions. However, longitudinal smooth muscle produced stretch-dependent high K＋-induced relaxation. We investigated several relaxation mechanisms to understand the reason for the discrepancy. Protein kinase inhibitors such as KT 5823 (1 ՌM) and KT 5720 (1 ՌM) which... -
The Effect of Methanol on the Structural Parameters of Neuronal Membrane Lipid Bilayers
Hyung-JinJoo, Shin-HoAhn, Hang-RaeLee, Sung-WooJung, Chang-WonChoi, Min-SeokKim, Moon-KyoungBae, In-KyoChung, Soo-KyoungBae, Hye-OckJang, 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.4 5 255-264 (10 pages)
The structures of the intact synaptosomal plasma membrane vesicles (SPMVs) isolated from bovine cerebral cortexs, and the outer and the inner monolayer separately, were evaluated with 1,6-diphenyl- 1,3,5-hexatriene (DPH) and 1,3-di(1-pyrenyl)propane (Py-3-Py) as fluorescent reporters and trinitrophenyl groups as quenching agents. The methanol increased bulk rotational and lateral mobilities of SPMVs lipid bilayers. The methanol increased the rotational and lateral mobilities of the outer... -
Fragile Self and Malevolent Others
Hye Yoon Park, Minji Bang, Kyung Ran Kim, Eun Lee, Suk Kyoon An 대한신경정신의학회 Psychiatry Investigation 9 Pages
대한신경정신의학회 Psychiatry Investigation 2018, 제 15권 제 8호 8 796-804 (9 pages)
Objective_Biased attribution styles of assigning hostile intention to innocent others and placing the blame were found in schizophrenia. Attribution styles in individuals at ultra-high risk (UHR) for psychosis, however, have been less studied especially for its association with various psychological factors. We investigated whether UHR individuals show increased hostility perception and blaming bias and explored the associations of these biased styles of attribution with the factor structure of... -
Maxillary sinus floor augmentation and simultaneous implant placement; A retrospective study of 614 dental implants (514 HA-coated Tapered Screw-Vent implants and 100 FBR coated Pitt-Easy implants.)
Ho-Yeol Jang, Hyoun-Chull Kim, Sang-Chull Lee, Jang-Yeol Lee 대한치과이식임플란트학회 Journal of Dental Implant Research 12 Pages
대한치과이식임플란트학회 Journal of Dental Implant Research 2009, 제 28권 1호 4 29-40 (12 pages)
Alveolar bone resorption and pneumatization of the maxillary sinus after the extraction of teeth limit the quantity and quality of the bone necessary for successful implant placement, especially in the edentulous posterior maxilla1). Many authors who have managed the insufficient bone problem in the posterior maxilla have reported various maxillary sinus floor augmentation techniques to increase bone volume and height. The sinus elevation surgery for implant placement was initially introduced by... -
Finite element stress analysis of internal implant/abutment connection according to different apical-coronal implant position
Su-Gwan Kim, Dong-Cook Choi, Byung-Ock Kim, Sang-Ho Oh 대한치과이식임플란트학회 Journal of Dental Implant Research 8 Pages
대한치과이식임플란트학회 Journal of Dental Implant Research 2004, 제 23권 1호 4 32-39 (8 pages)
The supracrestal apical-coronal positioning of the implant collar improves the clinical crown/implant ratio and the implant anchorage surface. The combination of a rough surface and a supracrestal apical-coronal position considerably increases the implant anchorage1). The disadvantages of supracrestal apical-coronal positioning are that osseointegration can fail owing to overload; failure can result owing to insufficient primary stability; metal may become exposed in the aesthetic zone (anterior... -
상악동에 인접하여 식립된 짧은 임프란트에 경사력이 작용하는 경우에 대한 유한요소해석적 연구
유원재, 이규복 대한치과이식임플란트학회 Journal of Dental Implant Research 13 Pages
대한치과이식임플란트학회 Journal of Dental Implant Research 2004, 제 23권 1호 3 19-31 (13 pages)
임프란트 시술의 장기적인 성공을 위해서는 임프란 트에 의해 주위골에 유도되는 응력의 수준을 가급적 낮출 필요가 있다.1) 골응력은 임프란트와 골조직간에 일어나는 하중전달의 결과이므로, 그 하중전달경로를 구성하는 임프란트의 재질2), 크기와 형상3,4), 임프란 트/골 계면의 특성 및 하중의 유형과 골의 상태5)등 여 러 인자들이 응력 분포에 영향을 미친다. -
A Review of the Potency of Plant Extracts and Compounds from Key Families as an Alternative to Synthetic Nematicides: History, Efficacy, and Current Developments
Abraham Okki Mwamula, Md. Faisal Kabir, DongWoon Lee 한국식물병리학회 The Plant Pathology Journal 25 Pages
한국식물병리학회 The Plant Pathology Journal 2022, 38권 2호 1 53-77 (25 pages)
The global nematicides market is expected to continue growing. With an increasing demand for synthetic chemical-free organic foods, botanical nematicides are taking the lead as replacements. Consequently, in the recent years, there have been vigorous efforts towards identification of the active secondary metabolites from various plants. These include mostly glucosinolates and their hydrolysis products such as isothiocyanates; flavonoids, alkaloids, limonoids, quassinoids, saponins, and the more... -
Identification of New Source of Resistance to Powdery Mildew of Indian Mustard and Studying Its Inheritance
Joghee Nanjundan, Channappa Manjunatha, Jalli Radhamani, Ajay Kumar Thakur, Rashmi Yadav, Arun Kumar, Mohan Lal Meena, Rishi Kumar Tyagi, Devender Kumar Yadava;Dhiraj Singh 한국식물병리학회 The Plant Pathology Journal 10 Pages
한국식물병리학회 The Plant Pathology Journal 2020, 36권 2호 1 111-120 (10 pages)
Powdery mildew of Indian mustard (Brassica juncea), caused by Erysiphe cruciferarum, is emerging as ma- jor problem in India. All the Indian mustard cultivars presently grown in India are highly susceptible to pow- dery mildew and so far no resistance source has been reported. In this study, with an aim to identify resistant source, 1,020 Indian mustard accessions were evaluated against E. cruciferarum PMN isolate, at Wellington, The Nilgiris, Tamil Nadu, India under natural hot spot conditions.... -
Detection of Multiple Potato Viruses in the Field Suggests Synergistic Interactions among Potato Viruses in Pakistan
한국식물병리학회 The Plant Pathology Journal 9 Pages
한국식물병리학회 The Plant Pathology Journal 2014, 30권 4호 8 407-415 (9 pages)
Viral diseases have been a major limiting factor threating sustainable potato (Solanum tuberosum L.) production in Pakistan. Surveys were conducted to serologically quantify the incidence of RNA viruses infecting potato; Potato virus X (PVX), Potato virus Y (PVY), Potato virus S (PVS), Potato virus A (PVA), Potato virus M (PVM) and Potato leaf roll virus (PLRV) in two major potato cultivars (Desiree and Cardinal). The results suggest the prevalence of multiple viruses in all surveyed areas with... -
시뮬레이션 해석을 통한 소재 별 소형 인장 시험편의 내구성 및 강도 특성에 관한 연구
이정호(Jung-Ho Lee), 조재웅(Jae-Ung Cho) 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 10 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2018, 제 8권 제 3호 54 579-588 (10 pages)
소재들에는 플라스틱 수지와 섬유 및 단일 금속 등으로 만들어진 소재들과 경량 특성들을 가지는 복합소재, 각 소재들의 장점들을 취합하여 내구성을 극대화시키는 방식의 이종재료 등이 있다. 본 연 구에서는 경량 복합소재인 CFRP에 주목하여 단일 소재로서 보편적으로 쓰이는 소재들인 스테인리스 강, 알루미늄과의 강도 특성을 CFRP와 비교 및 분석하고, 데이터를 확보하기 위해 각 소재 별로 동 일한 규격의 소형 인장 시험편(C-T specimen)을 설계하여 시뮬레이션 인장 해석 연구를 수행하였다. 연구 결과, CFRP 시험편 모델의 경우... -
비틀림을 받는 중앙부에 노치홀을 가진 CFRP 판의 구조 안전성에 관한 연구
김재원, 조재웅 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 8 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2017, 제 7권 제 11호 89 925-932 (8 pages)
본 연구에서는 복합재료들 중 단방향성 탄소섬유강화플라스틱(UD CFRP)에서의 적층각도에 따른 비틀림을 받는 판의 해석을 수행하였다. UD CFRP의 경우에는 적층각도에 따른 물성치가 달라진다. 그리고 연구 모델들에서 탄소 섬유의 적층각도는 15°, 30°, 45°, 60°, 75°, 90° 로 지정하였다. 중앙부에 는 리벳이나 볼트가 사용될 것으로 가정하여 노치홀을 적용하였다. ISO 15310에서의 실험 방식을 적 용하여 해석 방법을 사용했다. 하부에서 2개의 지그를 고정하고 상부에서 2개의 지그를 하강한다. 본 연구에서의 해석 결과값을... -
CFRP로 구성된 CT시험편의 섬유설계에 의한 적층구조에 따른 인장 특성 연구
황규완, 조재웅 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 9 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2017, 제 7권 제 11호 44 447-455 (9 pages)
현대 산업에서 복합재료를 폭넓게 사용하고 있다. 특히 섬유를 기반으로 하여 레진으로 경화시킨 섬유 강화 플라스틱의 재료는 우수하면서도 비강도, 비강성이 뛰어난 경량화 소재로 주목받고 있다. 이 중에서도 탄소섬유를 이용한 탄소섬유강화 플라스틱은 다른 섬유와 달리 뛰어난 기계적 특성을 지녀 차량과 항공기 등 고강도와 경량성을 동시에 필요로 하는 곳에 쓰이고 있다. 본 논문에서는 탄 소섬유강화 플라스틱으로 구성된 CT시험편으로 섬유 설계에 따른 인장특성을 해석적 연구를 통해 규 명한다. 구멍을 가진 CFRP복합재료의... -
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.... -
공기의 공급량 변화에 따른 Bio-drying SRF의 연소특성 실험
윤영식, 김동주, 정법묵, 김태훈, 박영수, 박세원, 양원석 한국열환경공학회 열환경공학 7 Pages
한국열환경공학회 열환경공학 2016, 제 13권 2호 5 39-45 (7 pages)
우리나라에서 발생되는 생활폐기물은 재활 용, 소각, 매립에 의해 처리되고 있으며 2014 년 기준 하루에 약 5만 톤의 폐기물이 발생된 다. 소각과 매립으로 처리되는 양은 전체 발생 량의 약 41%인 약 2만 톤에 달한다. 이에 따라 생활폐기물의 가연성분을 연료화하여 소각시설 의 운영비와 매립지의 사용기한을 연장하기 위 해 고형연료화 시설이 전국적으로 확충되고 있 다. -
Throughout history, acts of war such as bombardment as well as pillage and theft by invading forces are obvious threats cultural heritage. Especially, the illicit trade in cultural objects is now widely recognized as one of the most prevalent categories of intemational crime. Repatriations of cultural propeπy have already been extensively carried out by legal actions, by diplomatic pressure, by private donations or purchase, and so on since last decade. In the early 1970s, the concept of...
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Director’s Liabilities and Obligations in Korea
Sung Jai Choi 은행법학회 은행법연구 24 Pages
은행법학회 은행법연구 2014, 제 7권 제 1호 5 137-160 (24 pages)
In recent years, a number of CEOs of big Korean conglomerates are being prisoned or sentenced longer period than ever before. Legally, since executive officer system was introduced, executive function of BOD has been separated and appeared to more focus on supervisory function. In addition, in terms of directors’ responsibility, legislative policies, which strengthen, alleviate or decrease that responsibility by taking account of the specialty of position of directors, have been considered.... -
Multiple Representations in Preschool Numeracy: Teaching a Lesson on More-or-Less
Alfredo Bautista, Malikka Habib, Raymond Ong, Anthony Eng, Rebecca Bull 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 28 Pages
환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2019, Vol.13 No.2 6 95-122 (28 pages)
Mathematics education researchers and curriculum designers have emphasized the importance of representations in fostering students’ mathematical learning. However, most classroom-based studies on representations have focused on primary and secondary levels, and there is limited literature on how preschool teachers integrate representations in regular classroom activities. This qualitative study illustrates specific ways in which preschool educators may utilize multiple representations to teach... -
Diagnosis and Characterization of Middle-ear and Cochlear Functions
Rong Z. Gan 한국청각언어재활학회 Audiology and Speech Research 18 Pages
한국청각언어재활학회 Audiology and Speech Research 2013, 제 9권 제 2호 1 95-112 (18 pages)
Hearing impairment is one of the most common physical disabilities in the world. Conductive hearing loss results from dysfunction of the middle ear, and sensorineural hearing loss results from abnormalities within the cochlea or central nervous system. To improve the diagnosis of hearing loss and develop new technologies for restoration of hearing, changes of the middle ear and cochlear functions in relation to ear structural disorders in hearing impaired ears need to be characterized. This... -
Li-ion battery anodes from ginkgo leaf-derived nanoporous carbons rich in redox-active heteroatoms
Na Rae Kim, Hong Joo An, Young Soo Yun, Hyoung-Joon Jin 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 13 110-114 (5 pages)
Lithium-ion batteries (LIBs) have attracted increasing attention as a sustainable power source due to the rapid growth in mobile electronics and electric automobile markets, driven by increasing environmental awareness [1-4]. The electrochemical performance of LIBs is strongly dependent on the active electrode materials. Therefore, their continuing advanced development is of key importance to meet the expectations of the market [5-7]. Graphite, commonly used in LIB anodes, forms binary graphite... -
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)
Carbon fiber reinforced polymer (CFRP) composites have been used for many decades for extreme light weight design purposes in various areas, such as the aerospace industry, automobiles, sports goods and etc. because they provide the advantages of high specific strength 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.... -
The effect of the spinning conditions on the structure of mesophase pitch-based carbon fibers by Taguchi method
Zhao Jiang, Ting Ouyang, Xiangdong Yao, Youqing Fei 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 11 89-98 (10 pages)
Taguchi’s experimental design was employed in the melt spinning of molten mesophase pitch to produce carbon fibers. The textures of the obtained carbon fibers were radial with varied crack angles, as observed by scanning electron microscopy and polarized optical imaging. The diameter, crack angle, preferred orientation, and tensile modulus of the produced samples were examined to investigate the influence of four spinning variables. The relative importance of the variables has been emphasized... -
A review: synthesis and applications of graphene/chitosan nanocomposites
Hui Yuan, Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.17 No.1 2 11-17 (7 pages)
promising material with excellent electrical, thermal, mechanical, and optical properties, which play important roles in most fields. Researchers have achieved considerable progress with graphene. Chitosan (CS) is a natural polymer that has been studied intensively owing to its specific formation, high chemical resistance, and excellent physical properties. These outstanding properties have led to its universal use in applications such as textile fabrics, tissue engineering, medicine and health,... -
Activated carbons prepared from mixtures of coal tar pitch and petroleum pitch and their electrochemical performance as electrode materials for electric double-layer capacitor
Eunji Lee, Soon Hyung Kwon, Poo Reum Choi, Ji Chul Jung, Myung-Soo Kim 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 2 78-85 (8 pages)
Activated carbons (ACs) were prepared by activation of coal tar pitch (CTP) in the range of 700°C-1000°C for 1-4 h using potassium hydroxide (KOH) powder as the activation agent. The optimal activation conditions were determined to be a CTP/KOH ratio of 1:4, activation temperature of 900°C, and activation time of 3 h. The obtained ACs showed increased pore size distribution in the range of 1 to 2 nm and the highest specific capacitance of 122 F/g in a two-electrode system with an organic... -
Carbon nanotubes synthesis using diffusion and premixed flame methods: a review
Garima Mittal, Vivek Dhand, Kyong Yop Rhee, Hyeon-Ju Kim and Dong Ho Jung 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.1 1 1-10 (10 pages)
In recent years, flame synthesis has absorbed a great deal of attention as a combustion method for the production of metal oxide nanoparticles, carbon nanotubes, and other related carbon nanostructures, over the existing conventional methods. Flame synthesis is an energyefficient, scalable, cost-effective, rapid and continuous process, where flame provides the necessary chemical species for the nucleation of carbon structures (feed stock or precursor) and the energy for the production of carbon... -
Enhanced electrocapacitive performance and high power density of polypyrrole/graphene oxide nanocomposites prepared at reduced temperature
Harish Mudila, Varsha Joshi, Sweta Rana, Mohmd. Ghulam Haider Zaidi, Sarfaraz Alam 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.3 3 171-179 (9 pages)
An attempt was made to investigate the effect of the preparation temperature on the electrocapacitive performance of polypyrrole (PPY)/graphene oxide (GO) nanocomposites (PNCs). For this purpose, a series of PNCs were prepared at various temperatures by the cetyltrimethylammonium bromide-assisted dilute-solution polymerization of pyrrole in presence of GO (wt%) ranging from 1.0 to 4.0 with ferric chloride as an oxidant. The formation of the PNCs was ascertained through Fourier-transform infrared... -
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)
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 flexural strength and modulus of the epoxy nanocomposites till the RGO loading reached 0.4 wt%, and then... -
Modifications of mechanical, thermal, and electrical characteristics of epoxy through dispersion of multi-walled carbon nanotubes in supercritical carbon dioxide
MGH ZAIDI, Sanjeev Joshi, Manoj Kumar, Deepak Sharma, Ashwin Kumar, Sarfaraz Alam, Prakash Sah 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2013, Vol.14 No.4 4 218-227 (10 pages)
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A New Model and Equation Derived From Surface Tension and Cohesive Energy Density of Coagulation Bath Solvents for Effective Precipitation Polymerization of Acrylonitrile
YouZhou, LiweiXue, KaiYi, LiZhang, SeungKonRyu, RiGuangJin 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2012, Vol.13 No.3 9 182-186 (5 pages)
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Carbon Doping of TiO2 for Visible Light Photo Catalysis - A review
K. Palanivelu, Ji Sun Im, Young-Seak Lee 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2007, Vol.8 No.3 6 214-224 (11 pages)
