• 한국추진공학회지
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• 제16권4호
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• pp.9-15
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• 2012

본 연구에서는 핀 하중 시험을 통해 탄소섬유/에폭시 복합재의 핀 체결부에 대한 베어링 강도를 조사하고 음향방출법을 적용하여 파괴거동을 조사하였다. 복합재는 필라멘트 와인딩 공법을 적용하여 제작되었으며 적층패턴을 달리한 세 종류의 시편을 적용하였다. Type 1은 스티치가 있는 일방향 섬유시트가 적용된 적층패턴을 가지고 있고, Type 2는 스티치가 제거된 일방향 섬유시트가 적용된 적층패턴을 가지고 있으며, Type 3는 프리프레그가 적용된 적층패턴을 가지고 있다. 연구결과에 따르면 Type 1은 Type 2에 비해 베어링 강도가 3.3% 낮게 나타났으며 Type 3가 가장 높은 베어링 강도를 나타내었다. Type 1과 Type 2는 net-tension 모드 파손이, Type 3는 베어링 모드 파손이 나타났으며 Type 3의 음향방출 에너지는 Type 1과 Type 2의 경우에 비해 높게 나타났다. 이로 미루어 보면 Type 3가 구조적으로 가장 안전함을 알 수 있었다.

• 대한치위생과학회지
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• 제3권1호
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• pp.25-36
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• 2020

Introduction: The legal duties of Korean dental hygienists are different from the actual tasks. These factors cause dental hygienists to experience work stress. Therefore, it is necessary to investigate what tasks the dental hygienist expects to perform. Methods: This study examined the perception of dental hygienists' work on 158 prospective graduates of the 3rd-year and 4th-year course of dental hygiene. The questionnaire about the dental hygienist's duties was prepared based on the job description of dental hygienists by the Korea Health Personnel Licensing Examination Institute. Results: More than 84% said that all of the work in the second job description was possible as dental hygienists. subjects responded that the following items were not dental hygienists' duties: treatment plan based on medical history and dental history, treatment plan based on an intraoral and extraoral examination, treatment plan based on the results of teeth and periodontal examination, analysis of oral health data in community, planning of oral health promotion in community, planing of water fluoridation, reading of radiography, root planing, physical treatment on head and neck, using an ultrasonic device on head and neck, dealing with laser devices, making a temporary crown, suture and stitch-out, and intramuscular injection. Conclusions: Most graduates of dental hygiene departments have recognized that the tasks described in the second job description are dental hygienists' work; therefore, it is necessary to improve the gap between expected work and legal work.

• Journal of Chest Surgery
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• 제54권3호
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• pp.186-190
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• 2021

Background: Pre-lifting of the sternum marked a major turning point in pectus excavatum repair. The author developed the crane technique in 2002 and successfully applied it to more than 2,000 cases using sternal wire stitching. However, blind sternal suturing limited the use of the wire-stitch crane. We propose a novel screw for sternal lifting as a new tool for the crane technique. Methods: We developed a screw system strong enough to withstand the pressure needed for sternum lifting. The screw was designed to have a broader thread to hold the bony tissue securely. The screw's sustaining power was tested using the torsion, driving torque, and axial pull-out tests in a polyurethane block and ex-vivo porcine sternum. Results: The screws were easily driven into the sternum, and the head of the screw was connectable to the table-mounted retractor. In the torsion test, the 2° offset torsional yield was 4.53 N·m (reference value, 1 N·m). In the polyurethane block driving torque test, the maximum torque was 0.98 N·m (reference value, 0.70 N·m). The axial pull-out test was 446 N (reference value, 100 N). The maximum pull-out resistance in the ex-vivo porcine sternum model was 1,516 N. Conclusion: The screw crane was strong enough to sustain the chest wall weight to be lifted. Thus, the screws could effectively replace the sternal wire stitching in crane pre-lifting of the sternum. We expect that application of the screw-crane will be easy and that it will improve the safety and success rate of pectus repair surgery.

• 대한금속재료학회지
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• 제50권12호
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• pp.913-920
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• 2012

In spite of some problems in processability and bondability, Au wires in the microelectronics industry are gradually being replaced by copper wires to reduce the cost of raw material. In this article, the effects of surface roughness enhanced capillaries on thermosonic Cu wire bonding were evaluated. The roughness-enhanced zirconia toughened alumina (ZTA) capillaries were fabricated via a thermal grooving technique. As a result, the shear bond strength of first bonds (ball bonds) bonded using the roughness-enhanced capillary was enhanced by 15% as compared with that of normal bonds due to more effective plastic deformation and flow of a Cu ball. In the pull-out test of second bonds (stitch bonds), processed at two limit conditions on combinations of process parameters, the bond strength of bonds formed using the roughness-enhanced capillary also resulted in values higher by 55.5% than that of normal bonds because of the increase in the bonding area, indicating the expansion of a processing window for Cu wire bonding. These results suggest that the adoption of roughness-enhanced capillaries is a promising approach for enhancing processability and bondability in Cu wire bonding.

• 한국의류산업학회지
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• 제23권6호
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• pp.758-769
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• 2021

The purpose of this study is to analyze the traditional embroidery in India by region based on Bourdieu's cultural theory. As the research methods for this study, literature and case studies were conducted. The results of the study are summarized as follows. First, India's regions could be divided into four distinct regions based on language and religion. The main concepts of Bourdieu's cultural theory, namely the sub-dimensions of field and habitus, were the field of social system, the field of goods & economy, the field of environment/region, culture, and ethnicity. Second, Eastern India's embroidery was influenced by Hinduism and traditional art. The embroidery used various fabrics such as the Applique work, and vivid colors and patterns were mainly used in the Hindu myths, animals, and flower patterns of the embroidery. Third, embroidery in Western India was influenced by exotic cultures like Persian due to geographical conditions, and embroidery via the use of gold threads and various ornaments was developed. Symbolized flower patterns and geometric patterns were used a lot in the respective embroidery. Fourth, embroidery in southern India was influenced by the Dravidian culture and their architectural style, which saw the emergence of an embroidery that used simple colored cross-stitch. Most of the patterns in this embroidery are geometricized. Fifth, Northern Indian embroidery has historically served as the center of power, resulting in an embroidery that uses various forms and materials. In this embroidery, flower patterns are mainly used. Finally, the characteristics of the traditional embroidery of India's each region is based on Bourdieu's cultural theory, which could be summarized as ethnic religiosity, exotic splendor, structural formality, and symbolic power.

• 한방안이비인후피부과학회지
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• 제36권1호
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• pp.50-63
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• 2023

Objectives : This study used a network pharmacology approach to explore the active compounds and therapeutic mechanisms of Yijin-tang on Meniere's disease. Methods : The active compounds of Yijin-tang were screened via the TCMSP database and their target proteins were screened via the STITCH database. The GeneCard was used to establish the Meniere's disease-related genes. The intersection targets were obtained through Venny 2.1.0. The related protein interaction network was constructed with the STRING database, and topology analysis was performed through CytoNCA. GO biological function analysis and KEGG enrichment analysis for core targets were performed through the ClueGO. Results : Network analysis identified 126 compounds in five herbal medicines of Yijin-tang. Among them, 15 compounds(naringenin, beta-sitosterol, stigmasterol, baicalein, baicalin, calycosin, dihydrocapsaicin, formononetin, glabridin, isorhamnetin, kaempferol, mairin, quercetin, sitosterol, nobiletin) were the key chemicals. The target proteins were 119, and 7 proteins(TNF, CASP9, PARP1, CCL2, CFTR, NOS2, NOS1) were linked to Meniere's disease-related genes. Core genes in this network were TNF, CASP9, and NOS2. GO/KEGG pathway analysis results indicate that these targets are primarily involved in regulating biological processes, such as excitotoxicity, oxidative stress, and apoptosis. Conclusion : Pharmacological network analysis can help to explain the applicability of Yijin-tang on Meniere's disease.

• 한방안이비인후피부과학회지
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• 제36권2호
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• pp.1-9
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• 2023

Objectives : This study used a network pharmacology approach to analyze the treatment mechanisms of Yijin-tang on Meniere's disease, and comparative analysis the treatment mechanisms of drugs recommended in the Meniere's disease treatment guidelines. Methods : We collected information on the recommended drugs from the Meniere's disease treatment guidelines and their target proteins were screened via the STITCH database. The intersection targets were obtained through Venny 2.1.0. Gene Ontology(GO) analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway analysis were performed using ClueGO. Results : The 7 proteins(TNF, CASP9, PARP1, CCL2, CFTR, NOS2, NOS1) were associated with both Yijin-tang and Meniere's disease related genes. The 10 proteins(AQP2, KCNE1, AQP1, AVP, ACE, HRH1, HRH3, NOS1, CA1, CFTR) were associated with both the recommended drugs in the guidelines and Meniere's disease related genes. The 2 proteins(CFTR, NOS1) were common across all three groups. Further, GO/KEGG pathway analysis of the collected proteins revealed that the common mechanisms of action between Yijin-tang and the recommended drugs in the guidelines were related to pathways involving immune dysfunction and disturbances in lymphatic fluid homeostasis. In addition, the recommended drugs in the guidelines appeared to act through mechanisms that improve blood flow through vasodilation. Conclusions : Pharmacological network analysis can help to explain the treatment mechanisms of Yijin-tang on Meniere's disease.

• 복식
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• 제36권
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• pp.219-238
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• 1998

For the purpose of this Study, the situation of Korean costume properties in the collection of overseas museums was investigated through correspondence, interviews with their curators and persons in charge and survey. As results were made about the situation of museum science (conservation) and practical utilization of costume properties. So, the study result were drawn as follows : Krean costume properties unexplaind of 'Korean cultural Properties' could be found in the Metropolitan Museum of Art of New York(135 pieces), the Brooklyn Museum of New York(20 pieces), the Newark Museum of New Jersey(15 pieces), and the Victoria Albert Museum of London(100 pieces). Korean costume properties in the collection of over-seas museums mostly fall under the rang of period between the 19th century and the early 20th century and are classified into everyday clothing, wedding costume and armors for the most part. In 1900s, museum in several countries began to collected Korean cultural properties through foreign missionaries or diplomats as well as merchants or travellers in who bought Korean objects. Recently, scholars, traditional Korean costume designerss and diplomatic and consular offices in overseas have donated our Korean costume to many foreign museums. Korean costume properties were largely on display in the dependent display of folklore museums or in a part of exhibition gallery for Asian culture and there were the separate exhibition rooms in museums in the United Kingdom, Germany, Denmark, Austria, Japan and the United States America. But the size and level of display room for Korean cultural properties is one third as large as that for chinese or Japanese cultual properties. It was found in this study that the traditional Korean costume in the collection of overseas museums was largely recorded only as general items rather than given their proper names. The typical example of misnaming included bridal's Kimono for Wonsam(원삼) in the Metropolitan Museum of Art, Yeonroksaek-bumunsajeokori for Dangeui(당의) and Jissan-gryongwonmunsadurumagi for Kongdali(동달이) in the Okura collection of the Tokyo National Museum, and so on. And the Victoria Albert Museum modified the way of wearing Daenim(대님) and the National Museum of Ethnology in Osaka seemed to misplace the ornament of Keanggi(댕기) on Mubok(무복) and Josunjuk(조선족: Chinese-Korean) Museum also misplace hansam(한삼). On the one hand, the Newark museum of New Jersey mixed Chinese armor with the Korean one and the Photohraph of King Kojong(고종) with Chinese one. It is corrected to publish and disseminate the book concering Korean costume in order to inform foreign museums of thed proper names and wearing method of our traditional costumed. The repair of costume before cleaning in the process of conservation treatment can prevent damage likely to occur as the properties of fiber itself are weakened in liquid. It is recommended that western 8-figure stitch and tacking stitch is added to Korean traditional stitching method. Museums in the U.S.A and the U.K are concerned about the aftermath of cleaning it-self, specially conservation treatment may exert on remains and predominantly use the vacuuming method to remove dust or bits of straw before the exhibition beings. But in case of Korea, the dry cleaning and wet cleaning method are used according to the nature and state of a sample costume. This comprehensive cleaning method is gradually developing scientifically but it is expected that those concerned will make a chemical analysis of the solvent to be used and also the more precise test of costume properties will be conducted before cleaning them. A partial study was made here because the scope of study was too broad and vast. It is expected that more studies will be conducted concerning our costume culture under the long-term plan and active support at the government level.

• 헤리티지:역사와 과학
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• 제46권2호
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• pp.4-25
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• 2013

고리수는 편결(編結)과 금속공예의 기술이 접목된 새로운 형식의 수법(繡法)이다. 실올끼리 고리를 서로 엮어가며 공간상(空間上)에서 들떠 있어 마치 투조(透彫)와 같은 느낌을 준다. 수놓은 천에는 금박(金箔)이나 금실과 같은 황금 재질을 삽입하여 화려한 광택을 표현하고 있다. 이러한 특징은 고리수가 서구의 레이스워크(lacework) 공예와 그 형태 및 기법이 유사하면서도 가장 다른 점이다. 10세기 고려 초기, 강원도 월정사의 동자문수향갑낭(童子紋繡香匣囊)에서 고리수의 결구원(結構元) 무늬를 통해 초창기 자취를 발견할 수 있다. 조선 중기 왜란 시(1592, 선조 25년), 고리수 유물은 일본으로 약탈되어 '고려번(高麗幡)'이라고 불리며, 지금은 탁의(卓衣)의 형태로 개조되어 전한다. 19세기의 연대와 출처가 확실한 조선시대 궁수(宮繡) 베갯모에는 삼각무늬의 금박지(金箔紙)를 삽입하여 노란색 누에실을 엮어 짠 고리 감기수가 완벽하게 보존되어 있다. 고리수의 침법(針法)을 크게 분류하면, '고리수', '고리 감기수', '고리 새김수'의 3가지로 나눌 수 있다. 10세기경 초기 단계에서 13세기까지 고리수는 여러 침법으로 변화하며 점차 2~3가지의 입체적인 색채를 사용하였다. 고리수는 중세 이후 서양에서 비약적 발전을 보이며 고귀한 수공예로 알려진 레이스 짜기와 유사한 결구원을 지녔는데, 우리나라에서는 이미 10세기경 혹은 그 이전부터 편결과 금속공예가 접목된 복합적 공예 양식으로 탄생하여 천년 동안이나 그 수법(繡法)을 지속적으로 사용했다. 본 연구를 통해 한국에서 19세기 자수 베갯모에 고리수가 여전히 사용되고 있음을 밝혔다. 아울러 이러한 연구의 성과를 토대로 고리수의 원형기술을 복원했다. 그리고 '중요무형문화재 제80호' 기능보유자 한상수 자수장과 조선시대 고리수 유물들을 재현했다. 고리수 자수품은 편결과 금속공예의 황금세공기술이 자수공예와 접목하여 탄생된 전통과학기술의 복합적 산물(産物)이다. 이것을 계승과 창조의 새로운 방향으로 자수, 편결, 직조, 염색 등 기타 공예 관련 산업 분야에 확대 응용한다면, 의료(衣料)와 패션, 장식공예, 미술 디자인 등에 고급 부가가치의 신기술로 개발되어 활용될 수 있다. 또한 다른 공예기술과도 상호 보완된다면, 표현 영역의 확대와 더불어 다양한 예술적 조형미를 추구할 수 있어 우리의 삶에서 더욱 풍부한 미적 생활을 공유하게 되리라고 본다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제34권2호
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• pp.157-165
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• 2008

The aim of this study was to evaluate the efficacy of a topical 0.2% hyaluronic acid (HA) preparation in the management of wound after removal of arch bar for facial bone fracture and a suture site after orthognatic, oral cancer or oral surgery. Forty patients participated in a randomized, placebo controlled, double-blind trial to evaluate the efficacy of the topical HA and preparation. HA topically applied to the wound after removal of arch bar or stitch out, 3 times a day for 4 weeks. Evaluation is performed once a week for 4 weeks. For subjective evaluation, relative pain reduction in visual analog scale (VAS) and existence of heat sensation was accessed. For objective evaluation, gross evaluation, papilla index, existence of wound dehiscence, redness and swelling was checked. The same evaluation was performed in each arch bar group and suture group. For whole subject, 0.2% HA group resulted higher reduction than placebo group in pain of site in first week with significancy. Same findings were seen other weeks but there was no significancy. 0.2% HA group had better result than placebo in objective evaluation (papilla index, wound dehiscence, redness and swelling), but in gross evaluation placebo had better result than 0.2% HA group with no significancy. Subject was divided into suture group and arch bar group. Same aspect was seen, but only suture group had significancy not arch bar group in pain reduction score. 0.2% HA group resulted higher reduction than placebo group in pain of site in first week with significancy, especially in suture group. It reveals topical application of HA in wound especially suture site reduced pain in early stage. And 0.2% HA group had better result than placebo in papilla index, redness and swelling with no statistical significancy. In conclusion, HA has effect of pain reduction and healing promotion in the mucosal wound after oral surgery.