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『장애아동 재활치료서비스 바우처사업』에서 청능재활 서비스 모델에 대한 고찰
구성민, 조현 한국청각언어재활학회 Audiology and Speech Research 11 Pages
한국청각언어재활학회 Audiology and Speech Research 2008, 제 4권 제 2호 3 115-125 (11 pages)
난청족’ 생소한 명칭일지 모르나 힐러리 클린턴 상원의 원의 대선전략 책임자로 활동했던 마크펜(Mark J. Penn) 에 의하면‘2000년도 청력손실이 있는 미국인의 숫자는 거의 3,000만명에 이른다’라고4) 보고하면서 제시한 단어이 다. The NewYork Times 인터넷 기사에서는‘Hearing Loss is Common, but Often Untreated’라 보도하였고,23) 세계보건기구(WHO)에서는 성인에서 유발되는 소음성난 청은 개인의 사회적 고립에서 많은 국가적 경제 부담까지 심각한 영향을 끼칠 수 있는‘15번째로 가장 심각한 건강 문제’라 말하고... -
디지털 보청기의 Fractal Tone을 응용한 음악적 스트레스 경감 방법에 관한 고찰
이승화 한국청각언어재활학회 Audiology and Speech Research 5 Pages
한국청각언어재활학회 Audiology and Speech Research 2008, 제 4권 제 2호 1 99-103 (5 pages)
최근 현대인의 생활수준이 지속적으로 향상되고 있는 반면에 그 부정적 측면 중 하나로는 스트레스 수준의 증가를 들 수 가 있다. 뿐만 아니라 불면증, 심장질환 등 여러 가지 만성적 건강문제의 원인에도 부분적으로 현대생활의 스트레스 증가가 결부되어 있음을 확인할 수 있다. 그 동안의 연구를 보면 이러한 스트레스 증가의 발생률은 일반 건청인에 비해 난청인 인구에서 더 높게 나타남을 보임이 보고되고 있다.3) 이렇게 난청인 들의 스트레스가 증가하는 원인들 중 한가지는 의사소통의 실패와 그러한 경험의 지속적인 누적이... -
Physicochemical properties and methane adsorption performance of activated carbon nanofibers with different types of metal oxides
Faten Ermala Che Othman, Norhaniza Yusof, Hasrinah Hasbullah, Juhana Jaafar, Ahmad Fauzi Ismail, Noor Shawal Nasri 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 11 82-89 (8 pages)
In this study, composite PAN-based ACNFs embedded with MgO and MnO2 were prepared by the electrospinning method. The resultant pristine ACNFs, ACNF/MgO and ACNF/MnO2 were characterized in terms of their morphological changes, SSA, crystallinity and functional group with FESEM-EDX, the BET method, XRD and FTIR analysis, respectively. Results from this study showed that the SSA of the ACNF/MgO composite (1893 m2 g?1) is significantly higher than that of the pristine ACNFs and ACNF/MnO2 which is... -
Capacitance behaviors of conducting polymer-coated graphene nanosheets composite electrodes containing multi-walled carbon nanotubes as additives
Hoe-Seung Kim, Yongju Jung, Seok Kim 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 9 63-68 (6 pages)
of fossil fuels. To resolve this problem, various studies on efficient energy storage devices have been undertaken. Electronic technologies are increasingly used in electronic products and systems, and they require effective energy storage [1,2]. Supercapacitors are energy storage devices with high power density and long cycle life, and have been spotlighted in recent years because of their promising applications in portable devices, electric vehicles, transportation systems, digital devices. -
Dispersions of partially reduced graphene oxide in various organic solvents and polymers
Hye Min Kim, Seo Gyun Kim, Heon Sang Lee 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 8 55-62 (8 pages)
We report on the dispersion state of partially reduced graphene oxide (PRGO) in organic solvents, namely methyl ethyl ketone, ethyl acetate, methylene chloride, toluene, and xylene, by controlling the carbon to oxygen (C/O) atomic ratio of the PRGOs. A two-phase solvent exchange method is also proposed to transfer PRGO from water to an aprotic solvent, such as methyl ethyl ketone. We achieve relatively good dispersion in aprotic and non-polar solvents by controlling the C/O atomic ratio of the... -
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... -
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)
Polycrystalline diamond (PCD) tools possessing high hardness and abrasive wear resistance are particularly suited for drilling of carbon fiber reinforced plastic (CFRP) composites, where tool life and consistent hole quality are important. While PCD presents superior performance when drilling CFRP, it is unclear how it performs when drilling multi-stack materials such as CFRP-titanium (Ti) stacks. This comparative study aims to investigate drilling of a Ti plate stacked on a CFRP panel when... -
Thermo-electrical properties of randomly oriented carbon/carbon composite
Thakur Sudesh Kumar Raunija, N. Supriya 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 3 25-35 (11 pages)
The aim of the work was to investigate the thermo-electrical properties of low cost and rapidly produced randomly oriented carbon/carbon (C/C) composite. The composite body was fabricated by combining the high-pressure hot-pressing (HP) method with the lowpressure impregnation thermosetting carbonization (ITC) method. After the ITC method step selected samples were graphitized at 3000°C. Detailed characterization of the samples’ physical properties and thermal properties, including thermal... -
Effect of carbonization temperature on crystalline structure and properties of isotropic pitch-based carbon fiber
Jung Dam Kim, Jae-Seung Roh, Myung-Soo Kim 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 6 51-60 (10 pages)
Isotropic pitch-based fibers produced from coal tar pitch with the melt-blowing method were carbonized at temperatures ranging from 800 to 1600oC to investigate their crystalline structure and physical properties as a function of the carbonization temperature. The in-plane crystallite size (La) of the carbonized pitch fiber from X-ray diffraction increased monotonously by increasing the carbonization temperature resulting in a gradual increase in the electrical conductivity from 169 to 3800... -
In-situ magnetization measurements and ex-situ morphological analysis of electrodeposited cobalt onto chemical vapor deposition graphene/SiO₂/Si
Vin?cius C. De Franco, Gustavo M. B. Castro, Jeaneth Corredor, Daniel Mendes, Jo?o E. Schmidt 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 3 16-22 (7 pages)
Cobalt was electrodeposited onto chemical vapor deposition (CVD) graphene/Si/SiO2 substrates, during different time intervals, using an electrolyte solution containing a low concentration of cobalt sulfate. The intention was to investigate the details of the deposition process (and the dissolution process) and the resulting magnetic properties of the Co deposits on graphene. During and after electrodeposition, in-situ magnetic measurements were performed using an (AGFM). These were followed by...
