• Title/Summary/Keyword: preferred material

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Three-dimensional finite element analysis on stress distribution of the mandibular implant-supported cantilever prostheses depending on the designs (임플란트 지지 하악 캔틸레버 보철물의 디자인에 따른 저작압 분산에 관한 삼차원 유한요소 분석)

  • Ban, Jae-Hyurk;Shin, Sang-Wan;Kim, Sun-Jong;Lee, Jeong-Yeol
    • The Journal of Korean Academy of Prosthodontics
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    • v.47 no.1
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    • pp.70-81
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    • 2009
  • Statement of problem: The position and length of cantilever influence on the stress distribution of implants, superstructure and bone. In edentulous mandible, implant-supported cantilever prostheses that based 4 or 6 implants between mental foramens has been attempted. Excessive bite force loaded at cantilever prosthesis causes bone resorption and breakage of superstructure prosthesis around posterior implants. To complement the cantilever length of conventional prosthesis, In 1992, (McCartney) introduced "cantilever-rest-implant" and Malo reported "All-on-Four" in 2003. Purpose: Analyze and compare the stress distribution of conventional cantilever prostheses with rest implant and All-on-$Four^{TM}$ implant prostheses. Material and method: The external loads(300 N vertically, 75 N horizontally) are applied to first molar area. The stress value, stress distribution and aspect of stress dispersion are analyzed by three-dimensional finite element analysis program, ANSYS ver. 10.0. Results: 1. The rest implant and "All-on-Four" implant system are superior to conventional cantilever prostheses to reduce stress on the bone and the superstructure around implants. 2. The rest implant was of the greatest advantage to stress distribution on bone, implant and superstructure. 3. With same number of implants, distally tilted implants are preferred to conventional cantilever prostheses for reducing the length of cantilever.

Comparative Study of Bifurcation Behavior of Rubber in Accordance with the Constitutive Equations (구성방정식에 따른 고무 분기점 거동 비교 연구)

  • Park, Moon-Shik;Song, Seung
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.34 no.6
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    • pp.731-742
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    • 2010
  • Modeling of rubber for design or analysis often requires confusing or complex work because there are a large number of constitutive models to be considered. Some models have few material constants, while others have many. Researchers have to prepare and fit extensive experimental data with caution and discretion. In this paper, we first compared some typical rubber models in which deformation was carried out by stretching up to around eight times the original size. We conclude that continuum-based models and chain molecular models can be used in the study of the small deformation in most engineering applications, but chain molecular models are preferred in the study of the large deformations in most biomaterial applications. As discrimination problems, Treloar's patch and cylindrical balloon stick are tested theoretically and numerically for studying bifurcation. In the case of Treloar's patch, by using the Kearsley's equation, we show that bifurcation exists for continuum-based models but not for chain molecular models. Both models show bifurcation in the cylindrical balloon stick. Therefore, in the analysis of the bifurcation of rubber showed that its existence also depends on the constitutive model selected.

Eating Habits and Food Preferences of Certain Middle School Students in Daegu Area (대구 지역 일부 중학생의 식습관 및 식품 기호도)

  • Sung, Young-Sook;Bae, Ji-Hyun
    • The Korean Journal of Food And Nutrition
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    • v.24 no.3
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    • pp.312-319
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    • 2011
  • We investigated the eating habits and food preferences of middle school students to provide material for establishing dietary and nutritional education at the elementary level. We questioned 270 male and female students attending certain middle schools in the Daegu area about their eating habits and food preferences. Eating habits were found to be most regular for students in families where only one parent worked and irregular for students in families where both parents worked. There was a positive correlation between a higher level of academic education of the father and the frequency of consumption of instant foods. There was also a positive correlation between a higher level of academic education of the mother and the frequency of snack consumption. Male students had a higher preference for consuming animal foods than did female students. Students that lived in extended families tented to have a higher preference for vegetable foods. On the other hand, students that lived in nuclear families and students that lived in families where both parents worked preferred snacks more. Based on these results, parental employment and academic education level influences the eating habits and food preferences of middle school students.

Retrospective Analysis of 498 Primary Soft Tissue Sarcomas in a Single Turkish Centre

  • Duman, Berna Bozkurt;Gunaldi, Meral;Ercolak, Vehbi;Afsar, Cigdem Usul;Sahin, Berksoy;Erkisi, I. Melek Koksal;Kara, Oguz;Paydas, Semra;Gonlusen, Gulfiliz;Sertdemir, Yasar
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.8
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    • pp.4125-4128
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    • 2012
  • Background: Soft tissue sarcomas (STS) must be managed with a team involving pathologists, radiologists, surgeons, radiation therapists and medical oncologists. Treatment modalities and demographic charasteristics of Turkish STS were analysed in the current study. Material-Methods: Primary adult STS followed between 1999-2010 in Cukurova University Medical Faculty Department of Medical Oncology were analzied retrospectively Results: Of the total of 498 patients, 238 were male and 260 female. The most seen adult sarcomas were leomyosarcoma (23%). Localization of disease was upper extremity (8.8%), lower extremity (24.7%), head-neck 8.2%, thoracic 8%, retroperitoneal 5.6%, uterine 12.4%, abdominal 10%, pelvic region 3.6 and other regions 10%. Some 13.1% were early stage, 10.2% locally advanced, 8.2% metastatic and 12.2% recurrent disease. Patients were treated with neoadjuvant/adjuvant (12%) or palliative chemotherapy (7.2%) and 11.4% patients did not receive chemotherapy. Surgery was performed as radical or conservative. The most preferred regimen was MAID combination chemotherapy in the rate of 17.6%. The most common metastatic site was lung (18.1%). The overall survival was 45 months (95%CI 30-59), 36 months in men and 55 months in women, with no statistically significant difference (p=0.5). The survival rates were not different between the group of adjuvant and palliative chemotherapy (respectively 28 versus 18 months) (p=0.06), but radical surgery at 37 months was better than 22 months for conservative surgery (p=0.0001). No differences were evident for localization (p=0.152). Locally advanced group had higher overall survival rates (72 months) than other stages (p=0.0001). Conclusion: STS can be treated successfully with surgery, chemotherapy and radiotherapy. The survival rates of Turkish people were higher in locally advanced group; these results show the importance of multimodality treatment approach and radical surgery.

Characteristics of Yogurt Prepared with ′Jinpum′ Bean and Sword Bean(Canavalin gladiata) (진품콩과 작두콩을 이용한 요구르트 가공 특성)

  • 주선종;최금주;김기식;이재웅;박성규
    • Food Science and Preservation
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    • v.8 no.3
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    • pp.308-312
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    • 2001
  • This study was conducted to investigate the characteristics of yogurt prepared with different mixing ratios of 'Jinpum ' bean and sword bean(Canavalin gladiata). The crude protein content of 'Jinpum' bean used raw material was 38.0%, whereas that of sword bean was 27.5%. The pH and sugar content of ferment solution were deceased significantly up to 4 hours after strain inoculation but reduced slowly artier 8 hours. The content of organic acid and lactic ferments were increased. After 20 hours fermentation there was no significant differences between yogurt processed with 100% 'Jinpum' bean and yogurt processed with 95% 'Jinpum' bean and 5% sword bean. The number of lactic acid bacteria in yogurt processed with 95% 'Jinpum' bean and 5% sword bean was increased up to 20 hours but thereafter was decreased rapidly, showing the similar values compared to that of yogurt processed with 100% 'Jinpum' bean. The color values of yogurt processed with 95% 'Jinpum' bean and 5% sword bean artier 20 hours fermentation were similar to that of yogurt processed with 100% 'Jinpum' bean whereas those of yogurt processed with 90% 'Jinpum' bean and 10% sword bean were no little difference before and after fermentation. In the result of sensory test of yogurt prepared with 95% 'Jinpum' bean and 5% sword bean, adding strawberry syrup was more preferred than apple syrup.

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The Analysis for Trans Fatty Acids in Dairy Products Imported to Republic of Korea (수입 유가공품 중 트랜스 지방산 함량 분석)

  • Park, Jae-Woo;Park, Ji-Sung;Jung, Doo-Kyung;Song, Sung-Ok;Woon, Jae-Ho;Kim, Jin-Man;Wee, Sung-Hwan
    • Food Science of Animal Resources
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    • v.31 no.3
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    • pp.477-483
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    • 2011
  • In this study, the most preferred trans fatty acid analysis methods, AOAC 996.06 and the Korea Food and Drug Administration official method, were reviewed and modified to apply to dairy products and dairy products imported into the Republic of Korea for evaluating trans fatty acid (TFA) content. The Rose-Gottlieb method for total fat analysis was validated with accuracy and precision parameters by analyzing infant formula standard reference material provided by the National Institute for Standards and Technology. The accuracy and precision data satisfied the CODEX guidelines. TFAs were analyzed with a resolution of 1.5 for 45 min using the modified oven temperature program. This modified method was applied to 45 dairy products from 11 countries. Average TFA contents in these imported dairy products ranged from 0.1 to 5.4 g per 100 g product. The majority of dairy products imported into the Republic of Korea were cheeses. TFA contents in the cheeses were 0.1 to 2.4 g per 100 g cheese. TFA contents in other dairy products were 1.7 to 5.4 g per 100 g product. These TFAs content variations can be explained by the trans fatty acids naturally present in ruminant milk formed by bacterial bio-hydrogenation in the rumen of cows and the different vegetable fat used as ingredients in the final products.

Strategies for Development of Cultural Products Design for Promotion of Cultural Tourism Festivals - Focusing on utilization of local cultural resources - (문화관광축제 활성화를 위한 문화상품 디자인 개발 전략 연구(제 1보) - 지역문화자원 활용을 중심으로 -)

  • Chung, Kyung-Hee;Lee, Mi-Sook
    • Journal of the Korean Society of Costume
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    • v.59 no.7
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    • pp.17-33
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    • 2009
  • The purpose of this study was to get some pieces of prior information to eventually develop high value-added fashion cultural products design using local cultural resources, to promote the cultural tourism festival. For this purpose, this study is carried out the investigation of cultural product stores and visitors' questionnaire survey. The subjects of this study were festivals which were selected as cultural tourism festival by the Ministry of Culture, Sports and Tourism from 2000 to 2008. Of them, six festivals were finally selected but food festival was excluded. The results of this study were as follows; First, the store survey was conduced to analyze the situation of the products of cultural tourism festival. The most frequent product was accessories. And a T-shirt was found to be sold every festival probably because it was the most popular item and basic item which people could buy without burden. While the most diverse kinds of products were found in the Andong, the Jinju and Gangjin were found not to develop various products. In the design motif used for cultural products, most products did not use festival or local image. The highest use of the festival and local image was found in Gangjin and Muju. The Andong and Chungju were found to sell very common products buying anywhere rather than products using local cultural resources or image. In the material of cultural products, most products use metal. And In the price of cultural products, 10,000-30,000 won was found highest. Second, the purchase conditions of cultural tourism festival visitors were examined. The visiting goal and companion of visitors was found to vary with the type of cultural tourism festival. The types of visitors were also found to have an effect on the choice of items in the purchase of cultural products sold in the festival. Only one third of respondents responded buying one and more cultural products. The purchase rate was found high in the festival where cultural product items were various and there were many products symbolizing festival or region. The most purchased item was a mobile phone hanger and the amount of purchasing cultural products was 10,000-30,000 won. The reason not to purchase cultural products was dissatisfaction with utility, originality, possibility of a present, symbolism, and price. The most important attribute in the purchase of cultural products was design, followed by symbolism, price, originality, and innovation. The highly preferred product group included clothing, miscellaneous goods, and accessories. Specifically, T-shirt was found highest. Based on these research results, it was found that the design strategy for the cultural products development should consider both regional and festival images. The items and designs of the cultural products should reflect visitors' characteristics and the price zone should be varied.

A Study on the Characteristics and Considerations of Bibliographic Description of ISBD Consolidated edition 2011 (ISBD 통합판의 서지기술 특징 및 고려사항에 관한 연구)

  • Lee, Mihwa
    • Journal of the Korean Society for Library and Information Science
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    • v.46 no.4
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    • pp.169-188
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    • 2012
  • This study aimed to analyze the characteristics of the bibliographic description of ISBD Consolidated edition published in 2011 and to grasp the considerations in applying the rules of ISBD consolidated edition to KCR4. For achieving this, the four aspects were analyzed such as the description area and data elements, the resource types, the punctuation, and the order of the elements of ISBD Consolidated edition(2011). The characteristics of ISBD Consolidated edition are as follows. First, the content form and the media type area are added in new 0 area and elements are designated by mandatory to confirm to FRBR. Second, content form, content qualification and media type replaced GMD in title and statement of responsibility area. Third, the prescribed punctuations were retained even when this results in double punctuation, and individual square brackets were preferred than entire square brackets when using square brackets to all elements in same area. Fourth, the order of elements in description was set out by patterns of data elements in areas, therefore could reduce the confusion of the order of elements. ISBD Consolidated edition as an international standard would make various rules to maintain the uniformity, but also respects the bibliographic practices of individual countries. Therefore, each country must revise its own rule to conform the ISBD Consolidated edition as well as reflect its unique situation. In Korea, since KCR4 was developed based on the previous edition of ISBD, it should be revised to confirm to the ISBD Consolidated edition. Therefore, this study is expected to contribute to the revision of KCR4.

A Research on the Brassiere Preference and Wearing Status of Chinese Women in their 20's (중국 20대 전반 여성의 브래지어 착용실태 및 선호도 연구)

  • Cha, Su-Joung;Sohn, Hee-Soon
    • Journal of Fashion Business
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    • v.12 no.2
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    • pp.72-86
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    • 2008
  • This research focused on determining the brassiere preference index and wearing status of chinese ladies in their 20's living in the Shanghai region of China, to help Korean lingerie companies in their development of bras to successfully advance into the Chinese lingerie market. The main research tool of this research was various different surveys, and the results of the surveys were evaluated using the SPSS 12.0 for Window program. The results of the survey can be summarized as: 1) consciousness and satisfaction level of the body. The satisfaction level of the brest was proportionate to the size of the brassiere, thus, people showed higher level of satisfaction for cone-shaped, semi-circular shaped, prominent-shaped(exposing), lifted-shaped brest over flat-shaped brest. Concerning the relationship between the shape of the brest and the age of the customers, people under 22 years of age preferred flat-shaped, and those between 23-24 years of age preferring exposing and lifted brest, thus as females mature and get older, the size of their brest increases, thus having preference on more circular and lifted-shaped brest and bras. 2) Status of bra wearing in China When we look at the size of the bra in relation to the shape of the brest, those classified as having 'flat-shaped' brest showed a high proportion of A-cups, ranging from 75A, 70A and 80A, where as those of 'cone-shaped' brest represented high ration of B-cups, ranging from 75B, 75A and 80B. Majority of those classified as having 'semi-circular shaped' and 'prominent-shaped(exposing)' brest showed a high ration in the size 80 range. And vast majority of those classified into the 'lifted-shaped' brest group, were reported of having C-cup size bras. 3) Status of Bra Purchasing As people mature, the main reason behind choosing a bra was the actual design of the bra, where they emphasized the importance of aesthetic values. People classified as having 'flat-shaped' and 'cone-shaped' brest emphasized the importance of design and beauty, while those having 'semi-circular shaped,' 'prominent-shaped(exposing),' and 'liftedshaped' brest groups emphasized the importance of hygiene and the material(fabric) of the bra. This shows that when people have relatively smaller brest, they emphasize the importance of external appearance whereas when the size of the brest increases, they pay more attention to the function of the bra rather than the external appearance.

A Study on the Sale Conditions of the Current Brassiere Products - Focusing on the Sale of Brassiere for the Elderly Women - (시판(市販) 브래지어 판매실태(販賣實態) 연구(硏究) -老年女性用(노년여성용) 브래지어 판매(販賣)를 중심(中心)으로-)

  • Park, Eun-Mee;Kim, Young-Sook;Sohn, Hee-Soon
    • Journal of Fashion Business
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    • v.1 no.3
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    • pp.60-70
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    • 1997
  • The purpose of this study is to survey the sales of brassieres positively those of elderly women's (aged 50 or older) ones in particular through 72 sales outlets and thereby, in order to present the more comfortable brassiere models which can serve to reinstate elderly women's constitution and provide the useful basic data to brassiere makers and distributors for their business. The results of this survey and the suggestions therefrom can be summarized as follows; 1) Brassieres usually sell at 10,000-20,000 wons, which allows for 15% or more margin rate. Brassieres are disposed through bargain sales once or twice every year where their price are discount 10% or higher. Meanwhile, the majority of the brassieres distributors maintain more than 15% stock rate. The accumulated stocks are primarily disposed through return to makers or bargain sales. About 15% of the brassieres sold are returned by consumers to distributors to be replaced. 2) About a half of distributors operate some or other types of sales education programs. Most of these distributors feel that their educational program have been effective which suggests the effectiveness of sales educational program. On the other hand, 83.3% of the distributors operate in-house repair shops, while the absolute majority of them brief their customers on how to wear brassieres or clean them. 3) Because elderly women's understanding of brassieres sizes is very poor, they tend to ask help of the 'sales people about their sizes before purchasing and proper one personally. In other words, it has been disclosed that old women respond positively to seller's recommendation for their brassiere sizes. 4) It has been found that the brasseries sizes purchased by old women most are. 85A, 90A and 85B in their order, which suggests that the most popular size for under bust circumference is 85~90cm, while their primary cup size is "A". 5) The type of brasseries favored most by elderly women is the "full-cup" type, while their most favorite brassiere design is a soft and simple one. The colors preferred most by them are white, beige and pink in their order. 6) When being consulted by elderly women, sales people experience various difficulties due to their poor understanding of sizes and complaint about prices. Lastly, it has been found through this survey that elderly women want to see some sales promotion material featuring their brassiere sizes and their production arid ask the brasseries makers to produce more diverse brasseries sizes.

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