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본문검색 결과만 보기
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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... -
Comparison of spatio-temporal gait parameters according to shoe types in chronic stroke survivors
Soung Kyun Hong, Su Ho Park, Sung Ri Shin, Dong Geon Lee, Seung Hoo Lee, Sun Hye Jung, Seung Hyeon Pyo, Kyeong-Bong Lee, Gyu Chang Lee 물리치료재활과학회 Physical Therapy Rehabilitation Science 6 Pages
물리치료재활과학회 Physical Therapy Rehabilitation Science 2018, 제 7권 제 1호 5 23-28 (6 pages)
Objective: The purpose of this study was to investigate the impact of wearing various types of shoes on gait ability in stroke survivors and in order to gain information in regards to shoes that could possibly replace ankle orthosis. Design: Cross-sectional study. Methods: Eight hemiplegic survivors diagnosed with stroke participated in the study. Gait was analyzed using the GAITRite Electronic Walkway (CIR System Inc., USA) when subjects walked with no showed, walked with non-ankle-covered... -
Electromyographic analysis according to shoe weight during ambulation
Eun-sang Lee, Byung-hoon Lee, Ju-chul Cho, Yong-woo Lee, Seung-won Lee 물리치료재활과학회 Physical Therapy Rehabilitation Science 6 Pages
물리치료재활과학회 Physical Therapy Rehabilitation Science 2015, 제 4권 제 2호 9 115-120 (6 pages)
Objective: To examine the effects of different shoe weights on lower leg muscle fatigue when walking by electromyographic(EMG) analysis due to the most effective weight for loading not being established. Design: Cross-sectional study. Methods: Thirty healthy university students (15 male, 15 female) were enrolled and randomly assigned into three conditions, which included wearing athletic shoes with an addition of 300 g, 500 g, and 1,000 g weights respectively. Prior to walking, all subjects were... -
The impact of head repositioning accuracy and proprioception on cervical stabilization exercise in healthy adults
Kyung Wook Kang, Dae Won Kang, Gu Ye Kwon, Han Byul Kim, Kyoung Min Noh, Gi Hyun Baek, Jin Kwan Cha, Hyun Hee Kim 물리치료재활과학회 Physical Therapy Rehabilitation Science 6 Pages
물리치료재활과학회 Physical Therapy Rehabilitation Science 2015, 제 4권 제 1호 9 49-54 (6 pages)
Objective: Cervical stabilization exercises are frequently to improve strength and endurance of cervical muscles. The purpose of this study was to identify changes in head repositioning accuracy (HRA) and neck proprioception through cervical stabilization exercises in healthy adults. Design: One group pretest-posttest design. Methods: Thirteen participants with no previous history of neck pain or injury to the cervical spine were recruited. HRA was measured by equipment including laser pointer,... -
Detection of Corynebacterium bovis infection in athymic nude mice from a research animal facility in Korea
Tae-Hyoun Kim, Dong-Su Kim, Ju-Hee Han, Seo-Na Chang, Kyung-Sul Kim, Seung-Hyeok Seok, Dong-Jae Kim, Jong-Hwan Park, Jae-Hak Par 대한수의학회 Journal of Veterinary Science 4 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 4호 13 583-586 (4 pages)
Corynebacterium (C.) bovis infection in nude mice causes hyperkeratosis and weight loss and has been reported worldwide but not in Korea. In 2011, nude mice from an animal facility in Korea were found to have white flakes on their dorsal skin. Histopathological testing revealed that the mice had hyperkeratosis and Gram-positive bacteria were found in the skin. We identified isolated bacteria from the skin lesions as C. bovis using PCR and 16S rRNA sequencing. To the best of our knowledge, this... -
Efficacy of nano-hydroxyapatite prepared by an aqueous solution combustion technique in healing bone defects of goat
Samit Kumar Nandi, Biswanath Kundu*, Samir Kumar Ghosh, Dipak Kumar De, Debabrata Basu 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 2호 9 183-192 (10 pages)
The present study was undertaken to evaluate porous hydroxyapatite (HAp), the powder of which was prepared by a novel aqueous solution combustion technique, as a bone substitute in healing bone defects in vivo, as assessed by radiologic and histopathologic methods, oxytetracycline labeling, and angiogenic features in Bengal goat. Bone defects were created in the diaphysis of the radius and either not filled (group I) or filled with a HAp strut (group II). The radiologic study in group II showed... -
A case of maloccluded incisor teeth in a beaver: Castor canadensis
Joong-hyun Kim, Jae Yeong Lee, Tae-Sung Han, Kyu-bo Han, Seong Soo Kang, Chun Sik Bae, Seok Hwa Choi 대한수의학회 Journal of Veterinary Science 3 Pages
대한수의학회 Journal of Veterinary Science 2005, 제 6권 제 2호 15 173-175 (3 pages)
A three-year-old female beaver (Castor canadensis) was referred to the Veterinary Teaching Hospital of Chungbuk National University. It had been raised in the Cheong-ju zoo and had a history of malocclusion caused by improper feeding. General anesthesia was induced, and preoperative intraoral dental radiographs of the rostal maxillary and mandibular dentition were taken and lateral and ventrodorsal extraoral radiographs of the cheek teeth were also taken. The radiographs were negative for apical... -
THE INFLUENCE OF STABILIZATION SPLINT ON CONDYLAR POSITION AND CRANIOFACIAL MORPHOLOGY
Young Jooh Yoon, Kwang Won Kim 대한치과교정학회 The Korean Journal of Orthodontics 14 Pages
대한치과교정학회 The Korean Journal of Orthodontics 1995, 제 25권 제 6호 3 675-688 (14 pages)
The purposes of this study were: 1) to determine the? normal range of CR-CO discrepancy in normal occlusion group: 2) to evaluate the changes of condylar position and craniofacial morphology between centric relation and centric occlusion before and after stabilization splint therapy in malocclusion group outside the normal range of CR-CO discrepancy. The normal occlusion group consisted of 80 subjects who had well-balanced faces and good occlusions with acceptable Class I molar relationship.... -
The Staging of Major Mood Disorders
Ather Muneer, Rana Mazommil 대한신경정신의학회 Psychiatry Investigation 12 Pages
대한신경정신의학회 Psychiatry Investigation 2018, 제 15권 제 8호 2 747-758 (12 pages)
Objective_Staging of psychiatric disorders is gaining momentum and the purpose of this review is to examine whether major mood disorders can be defined according to stages. Methods_In April 2018 the PubMed electronic data base was scrutinized by a combination of various search terms like “major depressive disorder and staging,” “bipolar disorder and neuroprogression,” etc. To incorporate the latest findings the search was limited to the last 10 years. Both original and review articles were... -
노년기 우울성 가성치매 환자군에서의 뇌 단일광자방출 전산화 단층촬영 소견
이동우, 이명철, 정준기, 이동수, 곽철은, 이재성, 조경형, 조맹제 대한신경정신의학회 신경정신의학 10 Pages
대한신경정신의학회 신경정신의학 1997, 제 36권 제 6호 18 1138-1147 (10 pages)
연구목적：우울성 가성치매 환자군의 99mTc-HMPAO SPECT영상 소견을 정상 대조군, 인지기능장애가 없는 우울증 환자군 및 알쯔하이머형 치매 환자군과 비교함으로써 노년기 우울성 가성치매의 병태생리의 일 부를 알아 보았다. 방 법：9명의 알쯔하이머형 치매 환자군, 7명의 인지기능장애가 없는 우울증 환자군, 7명의 우울성 가성 치매 환자군, 4명의 정상대조군을 대상으로 하였다. 우울증 환자군은 DSM -III-R의 우울증의 진단기준에 의해 진단되었고, 알쯔하이머형 치매 환자군은 DSM III-R의 진단기준과 NINCDS-ADRDA의 알쯔하이머... -
알쯔하이머형 치매 12례에서의 뇌혈관류결손에 대한 종적관찰
김진영, 이재성, 이동우, 김장규, 전홍진, 김선욱, 이동수, 조맹제 대한신경정신의학회 신경정신의학 13 Pages
대한신경정신의학회 신경정신의학 2002, 제 41권 제 5호 13 863-875 (13 pages)
연구목적： 본 연구는 알쯔하이머형 치매 환자들을 종단적으로 추적하면서 뇌 단일광자 방출 전산화 단층촬영 (Single Photon Emission Computed Tomography : SPECT)을 이용, 기저영상과 추적영상을 얻은 후 3차원적인 관심용적 접근법으로 분석함으로써 알쯔하이머형 치매에서의 관류결손 소견의 이상 유무 및 종단적 변화를 규명하기 위한 것이다. 방 법： 알쯔하이머형 치매 환자군 12명(남자 10명 여자 2명, 평균연령 73.25±10.62세)과 정상대조군 10명 (남자 7명 여자 3명, 평균연령 75.10±5.76세)을 대상으로 하였다.... -
노인 운전자의 인지장애 경험 여부와 안전의식에 관한 연구
신중일, 박수희 대한고령친화산업학회 대한고령친화산업학회지 8 Pages
대한고령친화산업학회 대한고령친화산업학회지 2021, 제 13권 제 1호 8 85-92 (8 pages)
연구목적 : 본 연구는 한국 노인 운전자의 인지장애 경험 여부에 따른 안전의식의 차이를 알아보고 지속적으로 증가하고 있는 노인운전자의 교통사고 감소 및 예방을 위한 정책방향을 수립하는데 기초자료를 제공하고자 하였다. 연구방법 : 본 연구는 질병관리본부가 매년 실시하는 지역사회건강조사에 참여한 65세 이상 노인을 대상으로 하였으며 분석은 IBM SPSS/WIN 24.0 프로그램을 이용하였다. 지역사회건강조사의 표본은 복합표본 설계 하에 추출되었으므로, 층화변수, 집락변수, 가중치를 고려하여 산출하였다. 모든 통계적... -
A Study on Principles for Teaching English Listening Skills
Lee Hae-kyoung 공주교육대학교 초등교육연구원 교육논총 14 Pages
공주교육대학교 초등교육연구원 교육논총 53권4호 13 1-14 (14 pages)
The purpose of this study is to examine what factors make listening difficult in English education and suggest some principles for teaching English listening skills. The eight characteristics of spoken language are adapted from several sources: clustering, redundancy, reduced forms, performance variables, colloquial language, rate of delivery, stress, rhythm, intonation, and interaction. There are some principles for teaching listening skills: 1) include a focus on listening in an... -
A Review of Cost-Effectiveness Analysis and Model of Hearing Aid Fitting
Soo Hee Oh, Hyungi Chun, Kyoungwon Lee, Junghak Lee 한국청각언어재활학회 Audiology and Speech Research 6 Pages
한국청각언어재활학회 Audiology and Speech Research 2017, 제 13권 제 2호 1 95-100 (6 pages)
Purpose: Although many previous literatures investigated various outcomes of hearing aid fitting, a few studies explored the cost-effectiveness of hearing aid fitting and its underlying model. Examining cost effectiveness of hearing aid fitting provides comparative values of hearing aid fitting by measuring the economic gains of hearing aid interventions. The purpose of present study is to understand the cost-related outcomes and benefits of hearing aid uses and provide economic insights of... -
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)
drilled for the next 20 holes with the same drill bit. CFRP holes and CFRP-Ti stack holes were evaluated in terms of machined hole quality. The main tool wear mechanism of PCD drills is micro-fractures that occur when machining the Ti plate of the stack. Tool wear increases the instability and the operation temperature when machining the Ti plate. This results in high drilling forces, large hole diameter errors, high surface roughness, wider CFRP exit thermal damage, and taller exit Ti burrs. -
Tribological properties of carbon fiber-reinforced aluminum composites processed by spark plasma sintering
Ki Hoon Jung, Seungjin Nam, Sung-Soo Kang, Bon-Cheol Ku, Yun Hyuk Bang, Jun Yeon Hwang 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 14 103-106 (4 pages)
The development of light-weight and high-strength materials have gained attention to meet the evergrowing demands for safer and fuel-efficient automobiles. Thus, the importance and applications of composite materials are gradually increasing [1]. In the field of metal-matrix composite manufacturing, reinforcing agents are added to the metal matrix in the form of powders, whiskers, and fibers to improve the mechanical properties of metals [2]. Fibers have been used since the 1950s as structural... -
Molecular approach to hexagonal and cubic diamond nanocrystals
Mudar Ahmed Abdulsattar 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.3 5 192-197 (6 pages)
In the present work, we propose a molecule (C14H14) that can be used as a building block of hexagonal diamond-type crystals and nanocrystals, including wurtzite structures. This molecule and its combined blocks are similar to diamondoid molecules that are used as building blocks of cubic diamond crystals and nanocrystals. The hexagonal part of this molecule is included in the C12 central part of this molecule. This part can be repeated to increase the ratio of hexagonal to cubic diamond and... -
Changes in the porosity of bulk graphite according to the viscosity of resin for impregnation
Sang-Min Lee, Dong-Su Kang, Hye-Sung Kim, Jea-Seung Roh 한국탄소학회 Carbon Letters 3 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 10 132-134 (3 pages)
When manufacturing bulk graphite, pores develop within the bulk during the carbonization process due to the volatile components of the fillers and the binders. As a result, the physical properties of bulk graphite are inferior to the theoretical values. Impregnants are impregnated into the pores generated in the carbonization process through pressurization and/or depressurization. The physical properties of bulk graphite that has undergone impregnation and re-carbonization processes are... -
Method and mechanism of dispersing agent free dispersion of short carbon fibers in silicon carbide powder
Thakur Sudesh Kumar Raunija, Mariamma Mathew, Sharad Chandra Sharma 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.3 4 180-186 (7 pages)
This study highlights a novel method and mechanism for the rapid and effective milling of carbon fibers (CFs) in silicon carbide (SiC) powder, and also the dispersion of CFs in SiC powder. The composite powders were prepared by chopping and exfoliation of CFs, and ball milling of CFs and SiC powder in isopropyl alcohol. A wide range of CFs loading, from 10 to 50 vol%, was studied. The milling of CFs and SiC powder was checked by measuring the average particle size of the composite powders. The... -
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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The Carbonization Behaviors of Coal Tar Pitch for Mechanical Seal
Jae-Hong Chae, Kyung-Ja Kim, Kwang-Youn Cho, JAe-Young Choi 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters Vol.2 No.3&4 5 182-191 (10 pages)
탄소는 상온부근에서 화화적으로 안정된 원소로 기계 및 화학공업 분야에서 용도가 다양하다. 물리적인 특성으로 탄소는 금속적 성질과 세라믹 성질을 동시에 지니고 있으며, 흑연 결정 성장 정도에 따라 분류되고 그 성장속도가 클수록 금속적 성질을 지니게 된다. 이와같이 어느 쪽의 성질이 지배적인가에 의해 물리적 성질이 다양하며 용도도 달라진다. -
델파이 방법을 통한 국내 재활음악치료 발전방안 연구
박환영 한국음악치료학회 한국음악치료학회지 26 Pages
한국음악치료학회 한국음악치료학회지 2019, Vol.21 No.2 2 23-48 (26 pages)
본 연구는 델파이 방법을 통하여 국내 재활분야에서 음악치료의 현재 위치를 인식하고, 재활음악치료발전방안을 모색하고자 하였다. 이를 위하여 재활분야 음악치료 임상경력 3년 이상의 전문가 11명을대상으로 3차에 걸친 델파이 조사를 실시하였다. 이에 대한 결과는 다음과 같다. 첫째, 타 분야 재활전문가들은 음악치료를 재활분야에서 생소한 치료로 인식하고 있는 것으로 나타났다. 둘째, 재활음악치료 발전방안 중 재활치료로서 전문성을 가지는 부분에서는 재활음악치료 효과 입증을 위한 연구를 확대하는 것이 가장 중요한...
