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검색결과 131건 처리시간 0.029초

깍기 비탈면 설계에서의 지질조사 기법의 적용성 분석 (A Study on the Applicable Methods of Investigation for Cutting Slope Design)

  • 이수곤;최경침;김재헌
    • 한국환경복원기술학회지
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    • 제9권1호
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    • pp.100-111
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    • 2006
  • This study was carried out to increase the efficiency of site investigation through the evaluation of the applicable methods of investigation for cutting slope design. In an effort to find out the applicability of the method employed during the slope investigation, some tests were carried out on 6 subjects i.e location of weak zones, characteristics of discontinuities, distribution of strata, in situ tests for geo-technical properties, laboratory test and estimation of weathering. The method was highly applicable and produced expected results during the test of weak zones, discontinuities and distribution of strata. In order to apply the method to in- situ test for geo-technical properties and laboratory test on soil and rock slope, a statistic analysis of the existing data were required in advance. However its design applicability on rock slope was good although actual cases of application were not many due to limitation of the cases for investigation. The method was frequently referenced but not actually applied for anti seismic design test and estimation of weathering.

밀랍도포한지의 탈랍을 위한 최적 유기용매 추출기법 탐색 (Optimal Organic Solvent Extraction Method for Dewaxing of Beeswax-treated Hanji)

  • 최도침;최은연;조병묵;조병욱
    • 펄프종이기술
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    • 제44권6호
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    • pp.50-57
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    • 2012
  • In this study, the beeswax extraction methods using organic solvents were examined to develop a optimal dewaxing technology for beeswax-treated Hanji. Thermally-aged beeswax-treated Hanji was dewaxed using four types of extraction methods including dipping, Soxhlet extraction, ultrasonic washing and shaking methods. Then, the aging stability of the dewaxed Hanji was evaluated in terms of variations in paper strength and in the color of the printed area with muk. The experimental results suggested that the dewaxing methods allowing solvent to flow during extraction showed superior extraction efficiency. The dipping method in which the organic solvent does not flow showed the slowest extraction rate of beeswax compared to three other methods. In terms of variations in tensile strength and folding endurance, however, no obvious differences in the aging stability were observed amongst these four extraction methods. Regarding the aging stability in terms of the color of the printed area with muk, Soxhlet extraction method showed the best performance of dewaxing.

개별식이교육 프로그램이 혈액투석 환자의 식이요법에 대한 지식과 식이자가간호 이행에 미치는 효과 (Effects of Individualized Diet Education Program on the Dietary Knowledge and Self-Care Compliance among Hemodialysis Patients)

  • 김침은;한지영
    • 임상간호연구
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    • 제22권3호
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    • pp.257-264
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    • 2016
  • Purpose: The purpose of this study was to explore the effect of individualized diet education program on dietary knowledge and self-care compliance among hemodialysis patients. Methods: The design of the study was quasi-experimental nonequivalent control group pre-post test design. Fifty patients were assigned to an experimental group and fifty patients were assigned to a control group. Individualized diet education program was applied to the experimental group once every two weeks for twelve weeks. Results: Dietary knowledge increased significantly in the experimental group when compared to the control group. Dietary self-care compliance improved significantly in the post-test of the experimental group, however, the difference was not significant. Conclusion: The individualized dietary education program was effective in improving dietary knowledge. The individualized diet education program needs to be incorporated as an important nursing intervention. Nurses should provide individualized diet education program for hemodialysis patients.

충전제 투입 위치 이원화에 의한 고충전지 제조 (II) - 전분 투입 위치의 영향 - (Production of High Loaded Paper by Dual Flow Addition of Fillers (II) - Effect of Location of Starch Addition -)

  • 최도침;원종명;조병욱
    • 펄프종이기술
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    • 제47권1호
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    • pp.84-92
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    • 2015
  • Fillers have been used to improve the optical and printing properties and to reduce the production cost while increasing the filler content in paper causes adverse effects on paper strength. In the previous study, it was shown that the thick stock addition of filler can increase the filler content without significantly sacrificing paper strength. This study was carried out to elucidate the effect of the location of starch addition (before or after the filler addition) on handsheet properties and a papermaking process as a part of developing the thick stock loading technology. In addition, effects of dual flow addition of cationic starch were evaluated. It was found that paper strength was superior when cationic starch was added after the filler addition. No adverse effects on optical properties, formation and filler retention were observed. Drainage was a bit slower when starch was added after the filler addition, which shall be resolved with regulating other factors. Dual flow addition of cationic starch before and after filler addition did not show any special advantage.

음이온성 PAM과 양이온성 전분으로 도포된 경질탄산칼슘에 의한 종이 강도 향상 (Paper Strength Improvement by Anionic PAM and Cationic Starch Adsorbed PCC)

  • 최도침;최은연;원종명;조병욱
    • 펄프종이기술
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    • 제45권1호
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    • pp.59-66
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    • 2013
  • Fillers have been used for printing paper to improve printability, sheet formation and optical properties and to reduce production costs by replacing expensive wood pulps. However, an increased filler content will decrease paper strength because filler particles interfere with fiber-fiber bonding. In order to increase filler content without sacrificing too much paper strength in high filler content papers, the surface of precipitated calcium carbonate (PCC) has been modified by adsorbing anionic polyacrylamide and cationic starch in series. The adsorbed polymer layers would enhance interactions between the filler surface and the fiber surface, improving internal bonding. It was found that the modified PCC increased paper strength at a given filler content compared to the coventional method. Negligible differences in optical properties and formation of paper, filler and fines retention and drainage on the wire section were observed between the modified and the conventional PCC. However, the decreased bulk of paper was observed when the modified PCC was used.

저수지군 연계운영을 위한 웹 기반 다기준 그룹의사결정지원 모형의 구현 (Implementation of a Web-based MGDSS for Coordinated Multiple Reservoir Operation)

  • 조남웅;이용대;김승권
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2005년도 학술발표회 논문집
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    • pp.1417-1421
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    • 2005
  • 현실에서 실제 존재하는 문제들은 단일 목적이 아닌 다수의 목적들로 이루어지는 경우가 대부분이다. 수자원 분야의 저수지군 연계운영 경우 용수공급 부족량의 최소화, 저수량의 최대화, 발전량의 최대화, 그리고 수계외 유출량의 최소화 등의 다중목적들로 이루어지는데 저수량의 최대화와 발전량의 최대화처럼 서로 상충되는 목적들이 존재하게 된다. 따라서 저수지군 연계운영 효과를 극대화하기 위해서는 위와 같이 상충되는 목적들 간의 trade-off를 고려한 여러 대안을 도출하여 댐운영 의사결정자들 간의 협의를 통한 적절한 대안이 선택되어야 할 것이다. 이를 위해서는 자료의 공유가 필수적이며 각 의사결정자들의 요구사항 및 평가기준들이 합리적으로 수용되어야 할 것이다. 본 연구에서는 웹을 활용하여 의사결정자들에게 상충된 목적들에 대하여 실시간으로 대안을 제공하고 의사결정자들의 의사를 바탕으로 합의된 저수지군 연계운영 방안의 도출을 지원하는 웹 기반 다기준 그룹의사결정지원 모형을 구현한다. 합의된 해 선정을 위한 대안들은 CBITP(CHIM based Interactive Tchebycheff Procedure)를 활용한 다중목적 계획법에서 제시한 방안들을 이용하며 그룹의사결정은 PROMETHEE(Preference Ranking Organization Method for Enrichment Evaluation) 기법을 사용한다.

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구암(龜巖) 이정(李楨)의 도서간행(圖書刊行)에 관한 연구(硏究) (A Study on Guam LeeJung's Publication of Books)

  • 안현주
    • 한국도서관정보학회지
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    • 제42권1호
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    • pp.339-367
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    • 2011
  • 이 연구는 16세기 성리학자이며 문선이었던 구암(龜巖) 이정(李楨)의 도서간행에 관하여 고찰하였다. 그 결과 구암은 20종의 도서 편찬 교정 간행에 주도적인 역할을 했는데, 3종의 서적을 편찬 간행하였고, 4종의 서적을 교정 간행하였으며, 12종의 서적을 간행하였다. 이 과정에서 이황, 남궁침, 김충갑, 김홍 등이 도움을 주었다. 간행된 서적들은 1종을 제외하고 모두 성리학관련도서였고, 서적의 간행사기는 1554년부터 1566년까지로 구암이 성주, 경주, 순천에서 지방관으로 재임할 때였다. 또한 서지사항이 확실한 19종은 모두 목판본으로 간행되었다.

고해상도 어안렌즈 영상에서 움직임기반의 표준 화각 ROI 검출기법 (Motion-based ROI Extraction with a Standard Angle-of-View from High Resolution Fisheye Image)

  • 류아침;한규필
    • 한국멀티미디어학회논문지
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    • 제23권3호
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    • pp.395-401
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    • 2020
  • In this paper, a motion-based ROI extraction algorithm from a high resolution fisheye image is proposed for multi-view monitoring systems. Lately fisheye cameras are widely used because of the wide angle-of-view and they basically provide a lens correction functionality as well as various viewing modes. However, since the distortion-free angle of conventional algorithms is quite narrow due to the severe distortion ratio, there are lots of unintentional dead areas and they require much computation time in finding undistorted coordinates. Thus, the proposed algorithm adopts an image decimation and a motion detection methods, that can extract the undistorted ROI image with a standard angle-of-view for the fast and intelligent surveillance system. In addition, a mesh-type ROI is presented to reduce the lens correction time, so that this independent ROI scheme can parallelize and maximize the processor's utilization.

화침요법(火針療法)에 관(關)한 문헌적(文獻的) 고찰(考察) (A study of Literature review on the )

  • 신용승;우수진;임수일;임재용;김종훈;김덕호
    • Journal of Acupuncture Research
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    • 제20권4호
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    • pp.192-208
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    • 2003
  • Burning acupuncture is one of the methods of curing and preventing many kinds of diseases by inserting and taking out of the needle into particular points of the body so called acupuncture points, using a heated Dae-Chim which is one of the nine kinds of needles used in ancient times or by inserting a thick needle after its been heated to certain temperature. Nowadays in China, Burning Acupuncture is used thoroughly from musculoskeletal diseases to, internal medicine, gynecology and many other clinical departments. But in Korea, this method of cure is practiced by only a few clinicians, therefore by studying historical documents, our object is to recognize the importance of the Burning acupuncture and to offer the basis for the scientific researches and clinical application.

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SLC35B2 Expression is Associated with a Poor Prognosis of Invasive Ductal Breast Carcinoma

  • Chim-ong, Anongruk;Thawornkuno, Charin;Chavalitshewinkoon-Petmitr, Porntip;Punyarit, Phaibul;Petmitr, Songsak
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권15호
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    • pp.6065-6070
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    • 2014
  • Background: Breast cancer is the most common malignancy in women worldwide, including Thailand, and is a major cause of mortality and morbidity, despite advances in diagnosis and treatment. Novel gene expression in breast cancer is a focus in searches for prognostic biomarkers and new therapeutic targets. Materials and Methods: The mRNA expression of novel B4GALT4, SLC35B2, and WDHD1 genes in breast cancer were examined in invasive ductal breast carcinoma (IDC) patients using quantitative real-time reverse transcription polymerase chain reaction (QRT-PCR). Results: Among these genes, increased expression of SLC35B2 mRNA was significantly associated with TNM stage III + IV of IDC (p<0.001). Hence, up-regulation of SLC35B2 may serve as a prognostic biomarker for poor prognosis, and is also a potential therapeutic target in breast cancer.