• Title/Summary/Keyword: Evidence-base

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Clinical Efficacy of Radiation-Sterilized Allografts for Sellar Reconstruction after Transsphenoidal Surgery

  • Kim, Se-Jin;Jeon, Chi-Man;Kong, Doo-Sik;Park, Kwan;Kim, Jong-Hyun
    • Journal of Korean Neurosurgical Society
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    • 제50권6호
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    • pp.503-506
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    • 2011
  • Objective : The aim of this study was to assess the safety and efficacy of radiation-sterilized allografts of iliac bone and fascia lata from cadaver specimens to repair skull base defects after transsphenoidal surgery. Methods : Between May 2009 and January 2010, 31 consecutive patients underwent endonasal transsphenoidal surgery and all patients received sellar reconstruction using allografts following tumor removal. The allografts were obtained from the local tissue bank and harvested from cadaver donors. The specimens used in our approach were tensor fascia lata and the flat area of iliac bone. For preparation, allografts were treated with gamma irradiation after routine screening by culture, and then stored at $-70^{\circ}C$. Results : The mean follow-up period after surgery was 12.6 months (range, 7.4-16 months). Overall, postoperative cerebrospinal fluid (CSF) leaks occurred in three patients (9.7%) and postoperative meningitis in one patient (3.2%). There was no definitive evidence of wound infection at the routine postoperative follow-up examination or during re-do surgery in three patients. Postoperative meningitis in one patient was improved with the use of antibiotics and prolonged CSF diversion. Conclusion : We suggest that allograft materials can be a feasible alternative to autologous tissue grafts for sellar reconstruction following transsphenoidal surgery under selected circumstances such as no or little intraoperative CSF leaks.

류천(柳川) 창연광상(蒼鉛鑛床) 광석광물(鑛石鑛物), 유체포유물(流體包有物) 및 안정동위원소(安定同位元素) (Ore Minerals, Fluid Inclusions and Stable Isotopes of the Yucheon Bismuth Deposits, Korea)

  • 이현구;유봉철;김상중
    • 자원환경지질
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    • 제29권2호
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    • pp.139-150
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    • 1996
  • The Yucheon Bi deposits at Cheongha, Gyeongsangbugdo, is of a middle Paleogene (49 Ma) vein type, and is hosted in sandstone and shale of Banyawal formation in Cretaceous age. Based on mineral paragenesis, vein structure and mineral assemblages, two minera1ization stages were distinguished. The stage I consists of quartz with small amount of chlorite, pyrite, epidote, hal1oysite, vermiculite, serpentine and rutile associated with sericitization. The stage II is characterized by Bi minera1ization such as bismuthinite, Bi-Cu-Pb-S mineral, tetradymite, native gold, pyrite, pyrrhotite, arsenopyrite, wolframite, rutile, hematite, sphalerite, chalcopyrite, galena with alteration of sericite, chlorite, K-feldspar, albite and epidote. Fluid inclusion data indicate that fluid temperature and NaCl equivalent wt.% salinity range from 431 to $150^{\circ}C$ and from 19.2 to 0.18wt.% in the stage II. Evidence of boiling during the base-metal minera1ization indicates pressures 241 to 260 bars. Sulfur fugacity($-log\;f_{S2}$) deduced by mineral assemblages and compositions ranges from 5.1 to 5.7atm in early stage, from > 8.4 atm in middle stage and from 13.5 to 19.3 atm in late stage. It suggests that complex histories of progressive coo1ing, dilution and boiling were occurred by the mixing of the fluids. The ${\delta}^{34}S$, ${\delta}^{18}O$ and ${\delta}D$ data range from 2.5 to 3.9%, -0.5 to -4.1% and -29.7 to -47%, respectively. It indicated that hydrothermal fluids may be magmatic origin with boiling and mixing of meteoric water increasing paragenetic time.

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팔강변증(八綱辨證)에 대한 비교 연구 - 장개빈(張介賓).정국팽(程國彭).강함돈(江涵暾)을 중심으로 - (A Comparative Research of Eight Principle Pattern Identification - based on Zhang Jie-Bin, Cheng Guo-Peng, and Jiang Han-Tun -)

  • 김진호
    • 대한한의학원전학회지
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    • 제26권2호
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    • pp.47-59
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    • 2013
  • Objective : Syndrome differentiation(辨證) has clinical importance in East Asian Traditional Medicine. There are several ways for Syndrome differentiation. However, Eight Principle Pattern Identification(八綱辨證) is the base of other Syndrome differentiations. Of the physicians focused on Eight Principle Patterns(八綱), I have researched for Eight Principle Pattern Identification concerning with Zhang Jie-Bin(張介賓), Cheng Guo-Peng(程國彭), and Jiang Han-Tun(江涵暾) in Ming(明) and Qing(淸.) Method : Applying to Eight Principle Pattern Identification, I have researched comparatively for 3 kinds for. First, Zhang Jie-Bin's Jingyuequanshu(景岳全書) that involves Yinyangpian(陰陽篇), Liubianbian(六變辨), Biaozhengpian(表證篇), Lizhengpian(裏證篇), Xushipian(虛實篇), and Hanrepian(寒熱篇), secondly, Cheng Guo-Peng's Yixuexinwu(醫學心悟) Hanrexushibiaoliyinyangbian(寒熱虛實表裏陰陽辨), at lastly Jiang Han-Tun's Bihuayijing(筆花醫鏡) Biaolixushihanreyinyangbian(表裏虛實寒熱辨). Results : All of sick cases can be explained totally by Eight Principle Patterns. Of Eight Principle Patterns, Yin(陰) and Yang(陽) include last Six Principle Patterns(六綱 : 表裏, 寒熱, 虛實). Six Principle Patterns can be divided normally by 6 pulses(六脈 : 浮沈 遲數 虛實). In all of pain cases, feeling comfortable(可按) or discomfortable(拒按) to palpation can be important foundation for distinguishing Xu(虛) from Shi(實). Physical constitution(體質) for Hanre Xushi(寒熱 虛實) and tongue-diagnosis(舌診) for Biaoli Hanre(表裏 寒熱) are used effectively. Related with tongue-diagnosis, tongue-coating(舌苔) for Biaoli and tongue status(舌質) for Hanre are used effectively. Symptoms should be divided following this sequence, Biaoli ${\rightarrow}$ Hanre ${\rightarrow}$ Xushi and lastly should be summarized of Yinyang. Conclusion : Diagnosing with Eight Principle Patterns, digestive function, urine, and feces should be checked at first. In addition, the pulse, tongue, physical constitution, and good or bad from palpation(觸診), these should be checked and give a result. And then the result can be an important evidence of syndrome differentiation. As a result, it would be the best to diagnosis that discriminating the sequence as Biaoli Hanre Xushi and summarizing with Yinyang.

한.중 간 이어도해(海) 영유권(領有權)분쟁에 관한 지리학적 고찰 (Geographical Study on the Boundary Dispute of Ieodo Sea between Korea and China)

  • 송성대
    • 대한지리학회지
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    • 제45권3호
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    • pp.414-429
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    • 2010
  • 이어도 영유권 분쟁에 있어서 인접국인 중국의 부당한 주장에 대해 한국으로서 정합적인 논리를 개발 설득함으로써 문제를 평화적으로 해결하는 데 본 연구의 목적이 있다. 이를 위해 먼저 이어도의 자연경관의 특징과 형성과정을 자연지리학으로 정리하고. 이를 토대로 중국의 견강부회적인 주장에 대해 구체적이고 객관적인 반박 논리를 개발한다. 지질 지형과 관련한 지질사를 봤을 때 이어도가 제주도의 부속암초라는 사실이 그대로 드러나고 있으며, 중국이 주장하는 인문학적 증거, 즉 $\ll$산해경$\gg$에 대한 중국측의 해석은 우려할 정도로 왜곡되고 있다. 뿐만 아니라 중국측이 주장하는 논리가 북해대륙붕사건에서 독일의 논리를 도입하고 있으나 중국은 대향국간과 인접국간의 경계획정을 혼동하고 있어 정합성이 전혀 없다고 해도 과언이 아니다. 본 연구 결과는 강단지리학에 관심을 갖도록 할 뿐만 아니라 나아가 국민을 계도하고 관계기관이 상대국과 협상할 때 주요자료와 이론으로 활용할 수 있다.

유침(留鍼)시간에 대한 문헌적 고찰: 중국 문헌을 중심으로 (A Literary Review on Needle Retaining Time: Centered on the Chinese Medical Journal)

  • 왕개하;이은솔;조현석;김경호
    • Journal of Acupuncture Research
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    • 제28권5호
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    • pp.65-76
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    • 2011
  • Objectives : Study about needle retaining time. Methods : We reviewed the ancient and the present text of China with using the China academic journal(CAJ) of China national knowledge infrastructure(CNKI) Results & Conclusions : 1. Needle retaining time is important in acupuncture, because the therapy effect is influenced by it. 2. The time of needle retaining is up to those conditions like different disease, viscera and bowels(臟腑), meridian and collateral(經絡), obtaining Qi(得氣), seasons, constitution of the patients and acupuncture tools. In ${\ll}$Hwangdineijing(黃帝內經) ${\gg}$, needle retaining time is called by 'Zhiruzhichu(直入直出)', 'Jichu(疾出)', 'Liu(留)', 'Buliu(不留)', 'Jiuliu(久留)' and 'Liu ${\bigcirc}$ hu(留${\bigcirc}$呼)', and the time was shorter than nowadays. 3. The respiration number was counted to check needle retaining time but we can't find out any evidence. Recently in China, 'obtaining Qi(得氣)' and 'Qi arrival(氣至)' is used to check it. 4. Looking into clinical researches, different diseases need different needle retaining time. For example, 20~30min is appropriate time for musculoskeletal system. 60min is for circulatory system, 10~20min is for peripheral facial nerve paralysis. Insomnia and some stubborn diseases need longer time. Cold and heat(寒熱), deficiency and excess(虛實) are always influences the needle retaining as well. 5. It is important to figure out the most effective needle retaining time for different disease with the base of connection between needle retaining time and effect.

건강증진병원에서 실시된 당뇨병 및 심혈관질환 위험군 대상 생활습관개선 프로그램의 질병예방 효과 (Effectiveness of lifestyle interventions to prevent diabetes and cardiovascular diseases in a health promoting hospital)

  • 김혜경;나은희
    • 보건교육건강증진학회지
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    • 제32권4호
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    • pp.37-46
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    • 2015
  • Objectives: This study was conducted to expand evidence-base for the effectiveness of lifestyle intervention programs to prevent the onset of diabetes and cardiovascular diseases. Methods: Seven intervention studies between 2006 and 2014 at Korea Association of Health Promotion were analyzed. All the studies were randomized controlled trials(RCTs) and included multi-component behavioral interventions. The participants of the programs were 2,172 adults with risk factors regarding metabolic syndrome criteria. The proportions of normalized participants were compared within and across the studies using odds ratio effect sizes. Results: The reductions in the prevalence of metabolic syndrome were from 49.6% to 65.1% in intervention groups, and from 38.7% to 52.3% in comparison groups. Significant differences in effectiveness between groups were found in two studies, one in 2006 with odds ratio of 1.69(p<0.01) and another in 2009 with odds ratio of 2.36(p<0.001). Proportions of normalized participants were higher in blood pressure(31.9% to 52.5% in the intervention groups and 23.0% to 43.3% in comparison groups) than other risk factors. Abdominal obesity showed weakest improvement after the intervention in both groups. Conclusions: Lifestyle modification program is an effective method to reduce diabetes and cardiovascular risks in adults by decreasing the prevalence of metabolic syndrome and its components.

Progress in Novel Oxides for Gate Dielectrics and Surface Passivation of GaN/AlGaN Heterostructure Field Effect Transistors

  • Abernathy, C.R.;Gila, B.P.;Onstine, A.H.;Pearton, S.J.;Kim, Ji-Hyun;Luo, B.;Mehandru, R.;Ren, F.;Gillespie, J.K.;Fitch, R.C.;Seweel, J.;Dettmer, R.;Via, G.D.;Crespo, A.;Jenkins, T.J.;Irokawa, Y.
    • JSTS:Journal of Semiconductor Technology and Science
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    • 제3권1호
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    • pp.13-20
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    • 2003
  • Both MgO and $Sc_2O_3$ are shown to provide low interface state densities (in the $10^{11}{\;}eV^{-1}{\;}cm{\;}^{-2}$ range)on n-and p-GaN, making them useful for gate dielectrics for metal-oxide semiconductor(MOS) devices and also as surface passivation layers to mitigate current collapse in GaN/AlGaN high electron mobility transistors(HEMTs).Clear evidence of inversion has been demonstrated in gate-controlled MOS p-GaN diodes using both types of oxide. Charge pumping measurements on diodes undergoing a high temperature implant activation anneal show a total surface state density of $~3{\;}{\times}{\;}10^{12}{\;}cm^{-2}$. On HEMT structures, both oxides provide effective passivation of surface states and these devices show improved output power. The MgO/GaN structures are also found to be quite radiation-resistant, making them attractive for satellite and terrestrial communication systems requiring a high tolerance to high energy(40MeV) protons.

쥐 뇌에서 발현되는 S-100 Beta유전자의 Polymorphism에 대한 분자생물학적 증거 (Molecular Evidence for the Presence of Polymorphism in the Gene of S-100 Beta Protein Expressed in Rat Brain)

  • 신송우;권오식;유민
    • 대한의생명과학회지
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    • 제4권2호
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    • pp.137-142
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    • 1998
  • 쥐 뇌에서 발현되는 S-100 beta 유전자의 다형현상을 조사하였다. Polymerase chain reaction을 위한 주형으로는 뇌에서 분리한 mRNA를 직접 역전사한 cDNA, 또는 rat brain cDNA library에서 분리한 phage DNA를 사용하였다. 증폭된 DNA 절편들은 크기가 기존에 보고되었던 것과 일치하였으나 DNA sequencing을 통한 세부적인 분석 결과 coding region 내에 염기변화 (CAT가 CAC로 변함)가 있음이 확인되었다. 그러나 이들은 모두 histidine을 결정하는 유전암호이기에 단백질의 1차구조에는 아무런 영향을 미치지 않는 다형현상으로 결론지어졌다. 본 연구는 S-100 beta 단백질에 그동안 알려지지 않았던 다형현상이 존재함을 시사하는 것으로서 S-100beta 효소 유전자의 전체적인 구조를 이해하기 위한 학문적 자료가 될 것으로 기대된다.

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CT99 발현 신경 세포주에서 익기안신탕(益氣安神湯)의 신경보호 및 항치매 효과 (Effect of the neuroprotetion and anti-Alzheimer's disease in CT99-induced Neuro 2A cells by Ikgiansintang water extract)

  • 황연규;이소연;윤현덕;신오철;박창국;박치상
    • 대한한의학방제학회지
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    • 제13권1호
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    • pp.103-121
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    • 2005
  • Alzheimer's disease(AD) is a geriatric dementia that is widespread in old age. In the near future AD will be the biggest problem in public health service. It has been widely believed that $A{\beta}$ peptide devided from APP causes apoptotic neurotoxicity in AD brain. However, recent evidence suggests that n99 may be an important factor causing neurotoxicity in AD. Mouse Neuro 2A cells expressed with CT99 exhibited remarkable apoptotic cell damage. We invesgated the protective effects of Ikgiansintang water extract(IGA). Findings from our experiment have shown that IGA inhibits the activities of CT99, which has neurotoxicities and apoptotic activities in cell line. In addition treatment of IGA($50{\mu}g/ml$ for 24 hours) partially prevented CT99-induced cytotoxicity in Neuro 2A cells. As the result of this study, In IGA group, the apoptosis in the nervous system is inhibited, the repair against the degerneration of Neuro 2A cells by n99 expression is promoted. Base on these findings, IGA may be beneficial for the treatment of AD.

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Use of Complementary and Alternative Medicine in Patients with Gynecologic Cancer: a Systematic Review

  • Akpunar, Dercan;Bebis, Hatice;Yavan, Tulay
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권17호
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    • pp.7847-7852
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    • 2015
  • Purpose: Research carried out with gynecologic cancer patients using CAM was reviewed to provide a source for discussing which CAM method is used for which purpose, patients' perceptions on the effects/side effects occurred during/after using CAM and their sources of information regarding CAM. Materials and Methods: This literature review was carried out for the period between January 2000 and March 2015 using Scopus, Dynamed, Med-Line, Science Dırect, Ulakbim, Research Starters, Ebscohost, Cinahl Complete, Academic Onefile, Directory of Open Access Journals, BMJ Online Journals (2007-2009), Ovid, Oxford Journal, Proquest Hospital Collection, Springer-Kluwer Link, Taylor & Francis, Up To Date, Web Of Science (Citation Index), Wiley Cochrane-Evidence Base, Wiley Online Library, and Pub-Med search databases with "complementary and alternative medicine, gynecologic cancer" as keywords. After searching through these results, a total of 12 full length papers in English were included. Results: CAM use in gynecologic cancer patients was discussed in 8 studies and CAM use in breast and gynecologic cancer patients in 4. It was determined that the frequency of CAM use varies between 40.3% and 94.7%. As the CAM method, herbal medicines, vitamins/minerals were used most frequently in 8 of the studies. When the reasons why gynecologic cancer patients use CAM are examined, it is determined that they generally use to strengthen the immune system, reduce the side effects of cancer treatment and for physical and psychological relaxation. In this review, most of the gynecologic cancer patients perceived use of CAM as beneficial. Conclusions: In order that the patients obtain adequate reliable information about CAM and avoid practices which may harm the efficiency of medical treatment, it is recommended that "Healthcare Professionals" develop a common language.