• 제목/요약/키워드: Research article

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Fundamentals of Underpotential Deposition : Importance of Underpotential Deposition in Interfacial Electrochemistry

  • Lee Jong-Won;Pyun Su-Il
    • 전기화학회지
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    • 제4권4호
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    • pp.176-181
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    • 2001
  • 본 논문은 계면 전기화학에서의 underpotential deposition (UPD)의 중요성에 초점을 맞추어 UPD의 기본원리에 대하여 다루었다. 우선 underpotential shift와 electrosorption valency에 대한 설명과 함께 UPD의 기본개념을 기술하였다. 다음으로 금속표면에서의 수소발생 또는 금속내부로의 수소흡수 반응 이전에 관찰되는 수소의 UPD를 설명하였고, 특히 금속 표면에서의 흡착위치와 Pd으로의 흡수기구에 대하여 중점적으로 기술하였다. 마지막으로, 계면 전기화학의 여러 분야에서 UPD와 관련된 중요한 인자들을 응용적인 측면에서 간략히 설명하였다.

비전형적 항정신병약물에 의한 체중증가의 기전 및 약리유전학 (The Mechanisms of Atypical Antipsychotics-Induced Weight Gain and Related Pharmacogenetics)

  • 이준노;양병환
    • 생물정신의학
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    • 제10권1호
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    • pp.3-19
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    • 2003
  • The use of atypical antipsychotics is limited by occurrence of adverse reactions such as weight gain, despite of their benefits. This article provides a comprehensive review and discussion of the most significant findings regarding obesity-related pathways and integrates these with the known mechanism of atypical antipsychotic action. The focus of this article is primarily on the genetics of obesity related pathways that may be disrupted by atypical antipsychotics. This review also discussed weight gain, hyperglycemia or occurrence of diabetes while being treated with atypical antipsychotics from the point of view of pharmacogenetics. Pharmacogenetic research seeks to uncover genetic factors that will help clinicians identify the best treatment strategies for their patients. It will aid clinically in the prediction of response and side effects, such as antipsychotic-induced weight gain, and minimize the current "trial and error" approach to prescribing in the near future. This article also presents the genetics of both central and peripheral pathways putatively involved in antipsychotic-induced weight gain while providing a comprehensive review of the obesity literature. This article also review obesity related candidate molecules which may be disrupted during atypical antipsychotic drug treatment.

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The Fundamentals of Reduction of UO22+ Ions on a Pt Electrode and Methods for Improving Reduction Current Efficiency

  • Yeon, Jei-Won;Pyun, Su-Il
    • 전기화학회지
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    • 제10권2호
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    • pp.73-81
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    • 2007
  • This review article considered the electrochemical reduction of uranyl ions on a Pt surface. Specifically, we focussed on the improvement in its reduction current efficiency. First, this article briefly explained the fundamentals of the reduction of uranyl ($UO_2^{2+}$) ions on a Pt surface. Namely, they involved the electrochemical behaviour of uranium species, and electrochemical cell configurations for the reduction of $UO_2^{2+}$ ions. In addition, the effects of adsorbed hydrogen atoms were investigated on the reduction of $UO_2^{2+}$ ions. Finally, this article presented the methods for improving current efficiency of the reduction of $UO_2^{2+}$ ions on a Pt surface. Three different kinds of methods are introduced, which include electrochemical surface treatments of Pt electrode involving hydrogenation and anodisation, the use of catalyst poisons, and formation of thin mercury film on a Pt electrode. Moreover, this article provided some clues about how hydrogenation and catalyst poisons work on the reduction of $UO_2^{2+}$ ions.

Two New Species of Leptochelia (Crustacea, Tanaidacea) from the West Coast of Korea

  • Wi, Jin Hee;Jeong, Man-Ki;Jeong, Hyeon Gyeong;Park, Kwang Jae
    • Animal Systematics, Evolution and Diversity
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    • 제31권4호
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    • pp.284-295
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    • 2015
  • Two new species of Leptochelia Dana, 1849 are described from the western coast of Korea. Leptochelia grandidentata n. sp. is similar to L. itoi and L. lusei characterized by pleonites 4 and 5 of subequal lengths and a uropod endopod with 4 articles but differentiated by a cheliped fixed finger longer than the dactylus and with 4 teeth along the incisive margin, a maxilliped basis with 4 distal setae, and pereopod 1 propodus that is much longer than the combined length of unguis and dactylus. Leptochelia suhi n. sp. shares some features of L. myora with the first article of the uropod endopod longer than the second article and a maxilliped endite with 3 spiniform distal setae but can be differentiated by the cephalothorax being longer than the pleon, the relatively longer antennule article 3 compared to article 2, and the cheliped fixed finger with 3 robust teeth along the incisive margin. In this study, full descriptions of L. grandidentata and L. suhi are given, and a comparison with closely related species belonging to the ‘dubia/savignyi group’ is tabulated and discussed.

Traditional medicine in Taiwan: current status and future prospects

  • Cheng, Hon Mei
    • Advances in Traditional Medicine
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    • 제5권3호
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    • pp.173-177
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    • 2005
  • Oriental medicine is one of the main branches of traditional medicine left in the world. It includes acupuncture, acupressure, moxibustion, herbology, and qigong, all of which are still commonly used and officially recognized in some Asian countries, including Taiwan. In this article, the current educational, health insurance, and research and development status of traditional medicine in Taiwan will be introduced. The specific focus of the article is on efforts to integrate these ancient medical practices into modern medical science in our country.

Crowdfunding Research in the Information Systems Discipline and Beyond: Development and Outlook

  • Sunghan Ryu;Keongtae Kim;Jungpil Hahn
    • Asia pacific journal of information systems
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    • 제31권4호
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    • pp.575-581
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    • 2021
  • In this opinion article, we review the current streams of the information systems (IS) literature on crowdfunding and discuss how the literature has contributed to expanding our understanding of crowdfunding. Reflecting on the review, we propose avenues for future research to expand the existing knowledge on this impactful topic for the benefit of researchers and practitioners.

The Effects of Explicit Focus on Form on L2 Learning

  • Park, Hye-Sook
    • 영어어문교육
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    • 제8권1호
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    • pp.39-53
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    • 2002
  • Recently much research has investigated the role of attention in L2 learning, comparing the effects of explicit learning with those of implicit learning. With this background the research aims at examining the effects explicit focus on form has on L2 learning based on the acquisition of the English article system. The participants were 70 Korean college students who enrolled in English Composition classes. The experimental group received explicit focus on form including grammatical explanation, input enhancement, output practice, and negative evidence (corrective feedback) for two weeks, while the control group was exposed to sufficient input and negative evidence. Completion tasks were administered at the beginning and the end of the semester. In addition, errors in the use of English articles were analysed on their compositions both before and after the different treatments. The analyses of the results show that the explicit focus on form group improved significantly more than the control group, particularly for the definite article 'the', and some changes occurred in the distribution of article errors. These findings suggest that explicit teaching plays a more contributory role than implicit teaching in acquiring L2 knowledge in classroom-based L2 learning.

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A Comparison of the Constructions Make / Take a Decision in Malaysian English with the Supervarieties

  • Christina Sook Beng Ong
    • 아시아태평양코퍼스연구
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    • 제4권1호
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    • pp.43-59
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    • 2023
  • This study aims to compare the structures of light verb constructions (LVCs) taking decision as the deverbal noun in Malaysian English, British English and American English. A general corpus made up of Internet forum threads from Lowyat.Net, was created to represent Malaysian English while the British National Corpus (BNC) and Corpus of Contemporary American English (COCA) were used to represent the supervarieties. Light verbs make and take are found to be heading deverbal noun decision. Differences are observed in the use of articles. The frequency of Malaysian English LVCs without article is the highest while supervarieties LVCs prefer indefinite article. The high occurrences of LVCs without articles in Malaysian English can be attributed to the influence from Malaysian substrate languages. Findings also show that descriptive adjective is the most frequently used modifier in all three varieties of English. This suggests the standard LVC structure, comprising a light verb, the indefinite article, and a deverbal noun is no longer rigidly adhered to even among the native speakers of English.

Practice and Research Development of Technology Innovation in China

  • Wang, Zong-Jun;Wang, Xin-Xin;Wu, Yu-Qiong;Zhao, Yun-Long;Yang, Ping
    • 한국기술혁신학회:학술대회논문집
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    • 한국기술혁신학회 2006년도 The 1st China-Korea Conference on Innovation Studies
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    • pp.15-41
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    • 2006
  • The increasing popularity of the concept of technology innovation has been driven by greater international competition in a rapidly globalizing economy. Both countries and enterprises are placing more and more emphasis on it in order to gain competitive advantages. This article gives a general introduction about the research and application of technology innovation in China. At the national level, one obvious fact is that the total R&D expenditure increased rapidly during the year 2001 to year 2005 and reached Y 245 billions, and China made 2,452 international patent applications in 2005 and became the world's 10th largest user of the Patent Cooperation Treaty. At the industry and enterprise level, much progress has also been made in China. This article uses the high-tech industry as an example to introduce the industry and enterprise technology innovation respectively. Corresponding to the practice, scholars also did a great amount of research work related to technology innovation. This article sums up all the work done from the macroscopic aspect (such as national technology innovation strategy, regional innovation system, industry technology innovation) and microcosmic aspect (such as enterprise technology innovation strategy, patterns and evaluation standards). Based on the analysis, this article discusses the limitation of current work and research trend about the technology innovation.

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Human Visual Intelligence and the New Territory of Educational Technology Research

  • RHA, Ilju
    • Educational Technology International
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    • 제8권1호
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    • pp.1-16
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    • 2007
  • The general aim of this article is to explicate what can be researched in our field based on the new understanding on the ability of human visual intelligence. To follow this aim, three key discussions were followed. The first is to explain why the human visual intelligence research is so important in our field and how it was neglected. The basic orientations of the research questions used in its framing and in answering are reviewed. After reviewing traditional research orientations, as the second discussion, alternative, more useful perspective for thinking about human visual intelligence is suggested. And the possibility of contribution for the future research in general is discussed. In doing so, human visual intelligence was defined in rather practically oriented ways rather than theoretically oriented ones. More practical perspectives were suggested. The third discussion is to show how to use the alternative perspectives of human visual intelligence in the areas of educational technology research. It was hoped that the article lays out conceptual groundwork for generation of educational technology research frameworks which can be used for the research conduct, reproduction and sharing by adopting practically oriented views on human visual intelligence as a new territory of educational technology research.