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김태인,정지원,최재완,김운정,이지원,김윤서,천경진,배선규,김지유,채우리,정재원,송규석,이해솔,박정수,이주아,김영지,공경환,고호연,Kim, Tae-in,Chung, Ji-won,Choi, Jae-wan,Kim, Eun-jung,Lee, Ji-won,Kim, Yun-seo,Chun, Gyung-jin,Bae, Sun-kyu,Kim, Ji-yu,Chae, Woo 대한한방내과학회 2016 大韓韓方內科學會誌 Vol.37 No.6
Objectives: Strokes have diverse symptoms and signs. One of ten stroke patients has chronic pain after a stroke. Pain after a stroke interrupts rehabilitation and worsens quality of life, but there is no efficient treatment for this pain. This study surveyed and reports on the clinical studies of treatment for chronic pain after a stroke. Methods: We searched journals for reports on clinical studies of treatment for chronic pain after a stroke through the databases OASIS (http://oasis.kiom.re.kr), NDSL (ndsl.kr), Kmbase (http://kmbase.medric.or.kr/), and PubMed (http://www. pubmed.com). The search words were "stroke & pain", "jungpung中風 & pain", "pungbi風痺", "cerebral hemorrhage & pain", and "cerebral infarction & pain". Results: Twenty-nine studies of treatment for chronic pain after a stroke were found. Of these, 15 were randomized controlled trials, 10 were nonrandomized controlled trials, and 4 were "before and after" studies. Treatments were diverse, including acupuncture, electroacupuncture, herbal acupuncture, herbal medicine, and more. The treatment periods were longer than 3 weeks on average. Conclusions: These results show that good quality randomized controlled trials of treatment for chronic pain after a stroke are small in number. We need larger and more diverse studies of treatment for chronic pain after a stroke.
가토의 경골에 이식된 새로운 티타늄계 합금 주위의 골형성에 관한 형태학적 연구
김태인,Kim, Tae-In 대한치과보철학회 1998 대한치과보철학회지 Vol.36 No.5
Research advances in dental implantology have led to the development of several different types of materials and it is anticipated that continued research will lead to advanced dental implant materials. Currently used pure titanium has relatively low hardness and strength which may limit its ability to resist functional loads as a dental implant. Ti-6Al-4V also has potential problems such as corrosion resistance. osseointegration properties and neurologic disorder due to aluminium and vanadium, known as highly toxic elements, contained in Ti-6Al-4V. Newly developed titanium based alloys(Ti-20Zr-3Nb-3Ta-0.2Pd-1In, Ti-20Zr-3Nb-3Ta-0.2Pd) which do not contain toxic metallic components were designed by the Korea Institute of Science and Technology (KIST) with alloy design techniques using Zr, Nb, Ta, Pd, and In which are known as non-toxic elements. Biocompatibility and osseointegration properties of these newly designed alloys were evaluated after implantation in rabbit femur for 3 months. The conclusions were as follows : 1. Mechanical properties of the new designed Ti based alloys(Ti-20Zr-3Nb-3Ta-0.2Pd-1In, Ti-20Zr-3Nb-3Ta-0.2Pd) demonstrated close hardness and tensile strength values to Ti-6Al-4V. 2. New desinged experimental alloys showed stable corrosion resistance similar to the pure Ti but better than Ti-6Al-4V. However, the corrosion rate was higher for the new alloys. 3. Cell culture test showed that the new alloys have similar cell response compared with pure Ti and Ti-6Al-4V with no cell adverse reaction. 4. New designed alloys showed similar bone-metal contact ratio and osseointegration properties compared to pure Ti and Ti-6Al-4V after 3 months implantation in rabbit femur. 5. Four different surface treatments of the metals did not show any statistical difference of the cell growth and bone-metal contact ratio.
Nonlinear Theory for Laboratory Wave Generation
김태인,Kim, Tae In Korean Society of Civil Engeneers 1992 대한토목학회논문집 Vol.12 No.4
가변흘수(可變吃水)를 갖는 힌지형(型) 조파기(造波機)에 의한 조파현상(造波現像)을 다룬 2차해(次解)가 제시(提示)되었다. 피스톤형(型) 조파기(造波機)의 경우도 무한흘수(無限吃水)를 갖는 힌지형(型) 조파기(造波機)의 경우로서 함께 취급되었다. 2차해는 평면조파판(平面造波板)에 의해 생성(生成)되는 파(波)가 서로 다른 파속(波速)을 갖는 스토우크스 2차파(次波)와 2차자유진행파(次自由進行波)로 구성(構成)됨을 보여준다. 2차(次) 자유진행파(自由進行波)의 진폭(振幅)은 천해영역(淺海領域)에서 상대적으로 크고, 심해영역(深海領域)에서는 스토우크파(波) 진폭(振幅)의 10% 이내로 감소(減少)한다. 깊은 흘수(吃水)를 갖는 (수로(水路)바닥 가까이 힌지점(点)에 있는) 조파기(造波機)일수록 천해(淺海)와 중간수심(中間水深) 영역(領域)에서 진폭(振幅)이 작은 자유진행파(自由進行波)를 생성(生成)하나, 심해역(深海域)에서는 그와 반대의 현상(現像)을 보인다. A complete solution, exact to second-order, for wave motion forced by a hinged-wavemaker of variable-draft is presented. A solution for a piston type wavemaker is also obtained as a special case of a hinged-wavemaker. The laboratory waves generated by a plane wave board are shown to be composed of two components; viz., a Stokes second-order wave and a second-harnomic free wave which travels at a different speed. The amplitude of the second-harmonic free wave is relatively large in shallow water and decreases to less than 10% of the amplitude of the primary wave in deep water. Wavemakers with relatively deeper draft (i.e., hinged near the bottom) generate the free waves of smaller amplitude in shallow and intermediate water depths than the wavemakers with shallow draft. However, the opposite is predicted by theory in deep water.
Dental Implant 금속재료의 성분차이에 따른 세포독성에 관한 연구
김태인,한준현,이인석,이규환,신명철,최부병,Kim, Tae-In,Han, Jun-Hyun,Lee, In-Seok,Lee, Kyu-Hwan,Shin, Myung-Chul,Choi, Boo-Byung 대한치과보철학회 1996 대한치과보철학회지 Vol.34 No.4
Today, dental implants are an acceptable alternative, capable of providing bone-anchored fixed prostheses for improved quality of life and self esteem for many patients. Research advances in dental implantology have led to the development of several different types of materials, and it is anticipated that continued research will likewise lead to advanced dental implant materials. Currently used pure titanium has relatively low hardness and strength which possibly limits its ability to resist the functional loads as a dental implant. Ti-6Al-4V also has potential problems such as corrosion resistance, bone biocompatibility etc. The carefully selected Zr, Nb, Ta, Pd, In constituents could improve mechanical strength, corrosion resistance, and biocompatibility compared to that of currently used implant metals. On the basis of the totality of the data from our study, it can be concluded that new titanium alloys containing Zr, Nb, Ta, Pd, In are able to provide improved mechanical properties, corrosion resistance and biocompatibility to warrant further investigation of it's potential as new biomaterials for dental implants.