• Title/Summary/Keyword: Functional papers

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Synthesis and Optical properties of Functional Dye/MMA Copolymers (기능성 색소/MMA공중합체의 합성과 광학적 특성)

  • Lee, Bum-Hoon;Park, Jong-Ho;Yaung, Jae-Yun
    • Proceedings of the Korean Fiber Society Conference
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    • 2003.04a
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    • pp.214-217
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    • 2003
  • In recent years the focus of research in dye chemistry has largely changed from involvement in the traditional chemistry of dyes and pigments to investigations of functional dyes. With the development of the elcetronics and information industries, the importance of functional dyes has increased. Many research papers have been published concerning new synthetic methods and mechanicsm of functional dyes. Highly functionalized dicyanopyrazine derivatives can be used as fluorescent dyestuffs, emitters for electroluminescent devices tec. (omitted)

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A Study on Chemical Modification Effect of Papermaking Fiber by Cyanoethylation (Cyanoethyl화에 의한 제지용 섬유의 화학적 개질효과에 관한 연구)

  • Yoon, Se-Young;Jo, Byoung-Muk;Oh, Jung-Soo
    • Journal of the Korean Wood Science and Technology
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    • v.25 no.1
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    • pp.56-64
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    • 1997
  • Since there are three hydroxyl groups on each anhydroglucose ring of the cellulose, the renewable resources, we can get various functional papers by the chemical modification of cellulose. The reaction involving the introduction of the ${\beta}$-cyanoethyl ($-CH_2-CH_2$-CN) group into organic substances containing reactive hydrogen atoms is known as cyanoethylation. Cellulose reacts with acrylonitrile in the presence of strong alkalis in a typical manner of primary and secondary alcohols to form cyanoethyl ethers. In cyanoethylation, important factors of reaction are temperature, concentration of the NaOH, and addition rate of acrylronitrile. FT-IR spectra of cyanoethyl group was confirmed at $2250cm^{-1}$, which corresponds the introduction of aliphatic nitrile group. Effect of cyanoethyl DS(degree of substitution) on strength properties was resulted that cyanoethylated BKP of DS 0.04 appeared to be the best choice for overall strength properties. Also, excellent thermal stability in aging characteristics was obtained.

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Present and Prospect of Clothing Construction Research - Focus on academic associations' publication - (의복구성학 분야의 연구 현황과 전망 - 학회지를 중심으로 -)

  • Kim, Seonyoung
    • Journal of Fashion Business
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    • v.20 no.5
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    • pp.102-114
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    • 2016
  • The purpose of this study is to enable a scientific and rational approach for future research agenda setting in the clothing construction field. Through analysis of research papers on clothing construction published in domestic academic journals during the recent decade, the research trend of clothing construction in respective academic journals, research subjects, and research contents were grasped thoroughly. From all domestic academic associations' publication on garment/clothing and textiles/fashion, 7 academic journals were selected as subjects of research, in order to compare and analyze the research trend in the last ten years. The ten-year period ranged from April 2006 to March 2016, and a total of 735 papers published on clothing construction were used for analysis. The number of publications in the clothing construction area during the last decade has decreased, which is due to the increase in the number of clothing and textiles fashion-related academic journals, other than the 7 journals analyzed, and since the number of papers published in international academic journals has also increased. Body type, patterns, fitting test, and functional clothing accounted for the highest proportion of research themes in clothing construction. In terms of body type, there was an increasing tendency towards usage of 3D body measurement. In the patterns area, the 3D virtual dressing system was actively used. For functional clothing, sportswear, protective clothes, and innerwear were most widely researched, and ergonomic design together with smartwear was actively studied.

A Study on the Trend of Research in Food Science and Nutrition: Published in Journal of the Korean Society of Food Culture for last 21 years (식품영양 분야 연구동향: 지난 21년간 한국식생활문화학회지에 발표된 논문을 중심으로)

  • Lee, Yunkyoung;Lee, Kyung Won;Kim, Yuri
    • Journal of the Korean Society of Food Culture
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    • v.37 no.5
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    • pp.385-409
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    • 2022
  • This study investigated the trend of research on 'Food science and Nutrition' in previously published papers in the Journal of Korean Society of Food Culture (JKSFC) from 2000 to 2021. Total number of published papers in this category in the JKSFC was 693 which we classified into 7 main categories and 40 subcategories. Of these, 256 articles were on 'experimental cooking' which was the most studied field among 7 main categories. There was a total of 19 published papers under the category of 'microbiology and fermentation'. A total of 133 articles were published on 'functional foods' and provided essential data for discovering new materials under the theme of various physiological active functions of food materials. Furthermore, 107 articles were included in 'food processing and storage', which provided integrated knowledge of economy, stability and practicality based on various technologies. A total of 144 articles was included in the category of 'nutrition'. Under the category of 'nutrition', the most actively studied topic was 'eating behaviors and dietary habits,' and the trending topic was 'use of healthcare big data.' In conclusion, this review would provide trends of various categories of food science and nutrition area for recent 21 years and suggest directions for future research.

Pharmaceutical Care Services of Community Pharmacies in Korea Through the Review of Literature (문헌자료 고찰을 통한 우리나라 약국서비스 시행 현황)

  • Sohn, Hyun Soon;Kim, Hyojung;Park, Hyekyung;Han, Nayoung;Oh, Jung Mi;Ji, Eunhee
    • Korean Journal of Clinical Pharmacy
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    • v.25 no.1
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    • pp.18-26
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    • 2015
  • Background: The recent change in pharmaceutical education system following the paradigm shift to patient-oriented pharmacy service requires an in-depth discussion to reorganize a future direction and establish a basis for maximizing social values of community pharmacy service. Objective: This study was conducted to review the current status of community pharmacy service provision in Korea based on published literatures. Methods: The electronic databases of National Digital Science Library and Electronic National Assembly Library were used to search the journal articles and dissertation papers. A search term "community pharmacy" was used and the published period was limited to papers published after year 2001, when the legal separation of prescribing and dispensing was implemented. Relevant study reports were also searched manually. Information about pharmacy service provision and study outcomes were retrieved from the selected papers, and classified by predefined individual service scope. Results: A total 33 papers reporting services provided by community pharmacies were selected (journal article 11, dissertation paper 17, and study report 5). Pharmacy services identified in these papers could be classified into prescription dispensing service, pharmaceutical care service, self medication service, other products service, and health promotion service. Twenty papers reported prescription dispensing services, three papers reported pharmaceutical care service, and only two papers reported health promotion service. Current community pharmacy services are highly dependent on prescription drugs while expanded services such as pharmaceutical care and health promotion are peripheral. Most prevalent research topic was medication counseling service (18 papers), reflecting that community pharmacists generally consider it to be the most important and fundamental service. Overall, current pharmacy services are very limited and focus on prescription dispensing service. Conclusion: At this point of time requiring expansion and quality improvement of community pharmacy services, we suggest further lively discussion to strengthen pharmacist's functional identity and set conditions for providing socially expected services.

A Comparative Study for World-wide Constitutional Theories including Sasang Constitutional Medicine (사상체질의학을 포함한 체질론적 의학이론의 비교 연구)

  • Lee, Jong-Hoon;Cho, Jung-Hyo;Cheong, Kwang-Jo;Son, Chang-Gue
    • The Journal of Korean Medicine
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    • v.29 no.4
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    • pp.161-170
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    • 2008
  • Objectives: This study aimed at comparing Sasang constitutional medicine(SCM) with other constitutional theories of the world. Methods: From PubMed database, we first searched all papers using the term 'constitution', then filtered those having really constitution-focused papers. Then, they were analyzed to compare each constitutional theory and medicinal practice. Results: There were five constitution-related medicines which have been practiced in medical field: Sasang, iridology, somatotype, dermatoglyphics and Ayurveda. There was the largest number of scientific researches for dermatoglyphics while the smallest number of papers was for SCM. The other three constitutional theories were based on anatomic/histologic difference between types in contrast to SCM and Ayurveda, which relied on inherited functional differences of four or three internal organs. Conclusions: This study simultaneously compared five major constitutional theories currently practiced as medicines in the world. We found that even as SCM seems to have the most potential as therapeutic medicine it should be studied more using scientific methodologies to be a world-wide medicine.

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Development of Multi-functional Mulch Papers and Evaluation of Their Performance(II) (다기능성 멀칭지의 개발 및 적용성 평가(제 2 보)-강도개선, 시제품 생산 및 농작물 재배에의 적용결과 -)

  • 이학래;이진희;이변우
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.32 no.1
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    • pp.57-64
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    • 2000
  • As a method to reduce the sue of agricultural chemicals mulching with thin plastic films has been commonly practised for many years. Although use of plastic films for mulching is very effective in preventing herb growth it is almost impossible to remove all of the plastic films from the agricultural lands and the remaining films eventually contaminate the soils. Therefore, it is very imperative to develop a mulching material that decomposes completely to prevent soil pollution problems and to enhance the competitive edge of domestic agriculture. In this paper the possibilities of using strength resins for improving strength properties of mulch papers made from old corrugated containers were examined. Also mulch papers have been produced and applied for practical farming in upland as well as paddy field. Result showed that the usage of 0.7% of wet strength additives was effective for wet and dry strength of mulch paper. Changes of various process parameters including freeness, cationic demand, one pass retention, nitrogen content, etc. that occurred during trial production of mulch paper have been examined and discussed . It was found that paper mulching was very effective for weed control both in upland field and paddy filed.

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EXISTENCE AND GLOBAL EXPONENTIAL STABILITY OF A PERIODIC SOLUTION TO DISCRETE-TIME COHEN-GROSSBERG BAM NEURAL NETWORKS WITH DELAYS

  • Zhang, Zhengqiu;Wang, Liping
    • Journal of the Korean Mathematical Society
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    • v.48 no.4
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    • pp.727-747
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    • 2011
  • By employing coincidence degree theory and using Halanay-type inequality technique, a sufficient condition is given to guarantee the existence and global exponential stability of periodic solutions for the two-dimensional discrete-time Cohen-Grossberg BAM neural networks. Compared with the results in existing papers, in our result on the existence of periodic solution, the boundedness conditions on the activation are replaced with global Lipschitz conditions. In our result on the existence and global exponential stability of periodic solution, the assumptions in existing papers that the value of activation functions at zero is zero are removed.

Influence of the Type and Blending Ratio of Binders on Ink-jet Printing Properties (바인더의 종류 및 배합비율이 잉크제트 인쇄특성에 미치는 영향)

  • 이희명;김창근;이용규
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.34 no.2
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    • pp.22-31
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    • 2002
  • In this paper, PVA(polyvinylalcohol), oxidized starch and SBR latex were used as binders for ink-jet printing papers, and their effects of the type and blending ratio of binders on ink-jet printing properties were compared. In case of coating color using PVA mainly used for a binder in ink-jet printing, spreading of printed letters decreased and excellent images were manifested resulting from strong hydrophilic of PVA. However, increasing solids content of coating color was somewhat limited because of the interaction of PVA and functional groups in silica as well as high molecular weight of PVA. When oxidized starch and SBR latex were mixed with PVA at desirable ratio to solve these problems, runnability in coating process was improved and good printing properties were shown. Gloss was improved when latex was used along with PVA as a binder because of the thermoplastic property of the latex. From this result, possibilities of high solids content and high gloss ink-jet printing papers were investigated.

A Narrative Review of Clinical researches of Acupuncture treatment for Depression using Neuroimaging method: Focusing on SCI papers

  • Lee, Dong Hyuk
    • The Journal of Korean Medicine
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    • v.42 no.4
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    • pp.208-221
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    • 2021
  • Objectives: The purpose of this article was to investigate the current status of clinical studies of acupuncture treatment for depression using neuroimaging method, focusing on SCI papers. Methods: We searched for clinical trial studies of acupuncture treatment for depression using neuroimaging method in the MEDLINE (Pubmed), OASIS, and RISS database. Once the online search was finished, studies were selected manually by the inclusion criteria. Finally, we analyzed the characteristics of selected articles and reviewed the neural substrates of acupuncture treatment in depression. Results: Total eight studies were included in this study. The most frequently utilized modality was functional MRI. The most frequently selected acupoint for depression was GV20. Several studies revealed that acupuncture treatment could improve the symptoms of depression. In this manuscript, we demonstrated that neuroimaging techniques could capture the neural substrates associated with depression and acupuncture treatment may modulate the activation of brain areas which were impaired in depression in a different way from sham acupuncture. Conclusions: Utilizing neuroimaging methods to explore neural mechanism of acupuncture treatment on depression would be helpful in clinical trials and more efforts should be needed in this fields.