• Title/Summary/Keyword: DIS

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Structural and Physicochemical Properties of Dried Aloe Vera Gel Using DIS (Dewatering & Impregnation Soaking) Process (삼투탈수 알로에 건조제품의 구조적 및 물리화학적 특성)

  • Kim, Sung-A;Baek, Jin-Hong;Lee, Shin-Young
    • Food Engineering Progress
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    • v.13 no.1
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    • pp.24-31
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    • 2009
  • The structural and physicochemical properties of dried aloe vera gel by DIS (dewatering impregnation soaking) process under optimum conditions were investigated. FT-IR spectra for dried samples of DIS aloes showed the typical patterns of standard aloe polysaccharide, and surface structures by SEM (scanning electron microscopy) were similar to a gel-like structure. In case of physicochemical properties of dried aloe samples by DIS process, solubilities and swelling powers of control (not osmotic treated aloe), DIS (S) and DIS (G), samples treated by osmotic solution of 60% sucrose/0.25% NaCl and 50% glucose/0.5% NaCl, were 48.3-57.3% and 8.3-11.7%, respectively, showing no significant differences among samples, but swelling power of DIS (PEG), sample treated by using 50% polyethylene glycol as an osmotic agent was about 5 times higher that of control. Also, water holding capacities of control, DIS (S) and DIS (G) were similar to each other, but that of DIS (PEG) was about 5 times higher that of control. Oil holding capacities of control and DIS aloes maintained the 50.9-86.4% levels of water holding capacities showing no significant differences among samples. Rehydration ratio of DIS (PEG) aloes were significantly dependent on the temperature of rehydrated solvent (water), and rehydration ratio of not-fileted aloe was about two folds higher than that of fileted aloe.

A Study on the Meaning of Dis-joint in the Architecture of Louis Kahn (루이스 칸 건축에 나타나는 반접합(反接合)의 의미에 관한 연구)

  • Kim, Nak-Jung;Chung, Tae-Yong
    • Korean Institute of Interior Design Journal
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    • v.18 no.3
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    • pp.39-46
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    • 2009
  • The purpose of this study is to analyze the meaning of 'dis-joint' in the works of Louis I. Kahn. Kahn tried to realize his main architectural thoughts of 'what it wants to be' and 'how it was done' through his whole life. The concept of 'dis-joint' had been developed to visualize his architectural thoughts. Kahn used' dis-joint' to show and emphasize the structural system for the raison d'etre of building. Kahn's 'dis-joint' can be categorized as 'spacing', 'butt', 'slit' and 'protrusion'. Kahn used this kind of unusual way of joint beyond simple exposure to stress the existence of element, part and building itself. Through variable combination usage of 'dis-joint', Kahn can realize his architectural thoughts into building in a concrete way. The efficiency and function of joint is not the main issue in his works. 'Dis-joint' was the concrete tool to show the tectonic of architecture and construction process to enhance its presence. Therefore 'dis-joint' of Kahn's architecture is not a joint only to combine building parts but a concrete mean to realize his thoughts in a corporeal way. These facts insinuate that Kahn's architectural philosophy is based on the thoughts of tectonic and its realization.

Effect of DIS Process on in vitro Physiological Functionality of Aloe vera Gel (알로에 겔의 in vitro 생리기능 특성에 미치는 삼투탈수공정의 영향)

  • Kim, Sung-A;Baek, Jin-Hong;Lee, Shin-Young
    • Food Engineering Progress
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    • v.13 no.4
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    • pp.251-261
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    • 2009
  • In vitro physiological functions such as jack bean (Canavalia ensiformis) urease inhibitory activity and retarding effect of glucose/bile acid of Aloe vera gel concentrated by the optimized DIS (Dewatering Impregnation & Soaking) process conditions were examined. Urease inhibitory activity of DIS aloes ranged from 84.6 to 94.4%, which was similar to or higher than 86.3% of fresh aloe. Also, urease inhibitory activity of DIS aloes was maintained at initial levels after heat treatment (90$^{\circ}C$, 10 min.) and drying treatment (freeze or hot air drying). Urease inhibition pattern from Lineweaver-Burk plot indicated general non-competitive inhibition, and inhibition constants ($K_{IE}$ and $K_{IES}$) of DIS aloes were 41-149 and 87-163 $\mu$L/mL, respectively. DIS(glucose) and DIS(polyethylene glycol) exhibited the highest retarding effect of glucose and bile acid. Their retarding effects were about 1.6 and 1.8 folds higher than that of fresh aloe after 0.5 and 1 hr of the dialysis, respectively. Conclusively, the above in vitro physiological functions of Aloe vera gel concentrated by DIS process suggested that aloe products treated with DIS would have the potential benefits for protection against Helicobacter pylori and reduction of blood glucose and cholesterol levels.

Analysis and Countermeasure of User Data Elements on 'RFID in Libraries'(ISO/DIS 28560) (`도서관에서의 RFID'(ISO/DIS 28560)에서 사용자 데이터 요소의 분석 및 대응)

  • Choi, Jae-Hwang;Cho, Hyen-Yang
    • Journal of Korean Library and Information Science Society
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    • v.40 no.3
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    • pp.25-47
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    • 2009
  • The purpose of this study is to analyze ISO/DIS 28560 and to cope with the current developments in library RFID technologies. The user data elements in part 1 and encoding rules in part 2 and part 3 of ISO/DIS 28560 are explored. In addition, a few corresponding cases regarding user data elements on ISO/DIS 28560 are investigated. Based on the corresponding cases, four user data elements are selected. They are , , , and . This study expects to allow fertile ground for discussion on the selection of user data elements in Korea.

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Study on Dewatering and Impregnation Soaking Process (침지공정에서의 탈수 및 용질 침투현상에 관한 고찰)

  • Choe, Dong-Won;Sin, Hae-Heon;Choe, Hyeong-Taek
    • The Korean Journal of Food And Nutrition
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    • v.10 no.4
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    • pp.462-467
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    • 1997
  • The DIS process(dewatering and impregnation soaking process) are using for dewatering of food materials at room temperature. And the DIS process are resulted in diffusion process as well as dewatering phenomena. During the DIS process, plasmolysis or cytorrhysis was happened by according to solute size. A tissue state of food material was very important variables for movement of water or solute, and running conditions are important for dewatering and impregnation. And models for DIS process were fundamentally given by Fick's law at unsteady state or mass balance. For example, Bicompartmental Model was given for quantification of water loss and solid gain.

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Effect of Touch-key Sizes on Usability of Driver Information Systems and Driving Safety (터치키 크기가 운전자 정보 시스템의 사용성과 운전의 안전성에 미치는 영향 분석)

  • Kim, Hee-Hin;Kwon, Sung-Hyuk;Heo, Ji-Yoon;Chung, Min-K.
    • Journal of Korean Institute of Industrial Engineers
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    • v.37 no.1
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    • pp.30-40
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    • 2011
  • In recent years, driver information systems (DIS's) became popular and the use of DIS's increased significantly. A majority of DIS's provides touch-screen interfaces because of intuitiveness of the interaction and the flexibility of interface design. In many cases, touch-screen interfaces are mainly manipulated by fingers. In this case, investigating the effect of touch-key sizes on usability is known to be one of the most important research issues, and lots of studies address the effect of touch-key size for mobile devices or kiosks. However, there is few study on DIS's. The importance of touch-key size study for DIS's should be emphasized because it is closely related to safety issues besides usability issues. In this study, we investigated the effect of touch-key sizes of DIS's while simulated driving (0, 50, and 100km/h) considering driving safety (lateral deviation, velocity deviation, total glance time, mean glance time, total time between glances, mean number of glances) and usability of DIS's (task completion time, error rate, subjective preference, NASA TLX) simultaneously. As a result, both of driving safety and usability of DIS's increased as driving speed decreased and touch-key size increased. However, there were no significant differences when touch-key size is larger than a certain level (in this study : 17.5mm).

Dis·e Phenomenon in The 21st Century Fashion Beauty Design from the Viewpoint of Korean Aesthetics - Based on costume, makeup, hair design - (한국 미의식의 관점에서 본 21세기 패션뷰티디자인의 탈현상성 - 의상, 메이크업, 헤어디자인 중심으로 -)

  • Byun, Young Hee;Chae, Keum Seok
    • Journal of the Korean Society of Costume
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    • v.67 no.4
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    • pp.71-88
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    • 2017
  • The purpose of this study is to reveal that the deconstructive dis de phenomenon in contemporary fashion beauty design can be interpreted from the viewpoint of Korean aesthetics by having an open mind of coexistence. The typical characteristics of dis de phenomenon are decomposition, decentralization, and discontinuity, and these can be compared with beauty of non-artificialness, unity, and humor, which are characteristics of Korean aesthetics. In other words, the dis de-phenomenon rejects traditional composition and uniformized expression, and seeks various images by accepting the bi-national confrontation concept, this is similar to Korean aesthetics, which experienced atypical diversity by concentrating on the inner spirit rather than the outer form through indifference to technique, form, and honest human emotion.

An Information Fusion-based Disaster Information System Framework (정보융합기반 재난정보시스템 프레임워크에 관한 연구)

  • Park, Choong-shik
    • Journal of the Society of Disaster Information
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    • v.5 no.2
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    • pp.40-48
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    • 2009
  • DIS(Disaster Information System) is the information system supporting prevention, readiness, response, and recovery to disasters. DIS must monitor various disaster-related informations, keep various human resources and various material resources, and response real disasters. The conventional DISs are insufficient for integrated situation analysis, real-time report and operation, and utilizing the expertise of disaster personnels. In this study, the information-fusion based DIS framework is proposed for analysing various level informations, providing integrated situation informations and response plans, and processing real-time reports and operation according to field situations. The proposed DIS framework adopts information-fusion technologies and knowledge-based BRMS(Business Rule Management System).

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Effect of cleansing methods on the bone resorption due to repeated dis/re-connection of implant abutment (지대주 풀림과 조임시 지대주 세척방법에 따른 임플란트 주변 골소실의 양에 대한 평가)

  • Yang, Seung-Min;Shin, Seung-Yun;Kye, Seung-Beom
    • Journal of Periodontal and Implant Science
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    • v.37 no.3
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    • pp.535-542
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    • 2007
  • Background : Repeated dis/re-connection of implant abutment caused bone loss around implant fixtures due to the new formation of biologic width of the mucosal-implant barrier. The aim of this clinical study was to evaluate whether the repeated dis/re-connection of implant abutment cause bone loss clinically and the effect of cleansing methods on a bone loss during the early healing period. Methods : A total 50 implants were installed in 20 patients and repeated dis/re-connection of abutment was performed at the time of surgery and once per week for 12 weeks. 0.9% normal saline solution as group1 and 0.1% chlorhexidine solution as group 2 was used to clean abutments. All patients had radiographs taken at the placement of implant and 4, 8, and 12 weeks postoperatively. The data for bone loss around implant were analyzed. Results: The marginal bone loss at 12 weeks were $1.28{\pm}0.51mm$, $1,32{\pm}0,57mm$ in the mesial and distal sides in group1, $1.94{\pm}0.75mm$, $1.81{\pm}0.84mm$ in group 2, respectively. In view of marginal bone loss, there was not a significant statistical difference between groups. Conclusions : Repeated dis/re-connection of implant abutment may not cause marginal bone loss around implant fixture although limited samples and short-term observation period. In spite of more bone loss in group 2, there was no statistical significant difference between groups. In context of those results, the clinical significance of the repeated dis/re-connection of implant abutment and the cleansing method of abutments is debatable when it comes to marginal bone loss during early healing period.

Preparation and Characterization of PEG-impregnated Aloe Gel through DIS Processing of Aloe vera Leaf Slice (DIS 공정에 의한 Polyethylene Glycol 함침 알로에 베라 겔의 제조 및 특성화)

  • Kwon, Hye Mi;Hur, Won;Lee, Shin Young
    • KSBB Journal
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    • v.28 no.6
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    • pp.356-365
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    • 2013
  • The novel Aloe gels were prepared with dewatering and impregnation by soaking (DIS) processing of Aloe vera leaf slice at four different temperatures (25, 35, 45 and $55^{\circ}C$), using dehydration solution of 40% (w/v) polyethylene glycol (PEG4000). The PEG-impregnation to Aloe vera leaf slice during DIS was observed depending on immersion temperature, and the PEG-impregnated Aloe vera gel (PEG-i-AVG) obtained was characterized using $^1H$ NMR, FT-IR, GPC, XRD and TGA. The PEG-i-AVG had the higher levels of Aloe bioactives (glucomannan and O-acetyl contents) and better quality indices by $^1H$ NMR and FT-IR spectroscopy than those of native Aloe gel. Also, the obtained Aloe gel maintained the bimodal patterns in higher molecular weight region by GPC indicating no degradation of polysaccharide from native Aloe gel. The result observed by SEM confirmed a surface modification by forming the porous structure, and TGA result exhibited better thermal stability than that of native Aloe gel. XRD result revealed that the crystalline structure in Aloe gel was led by incorporation of PEG. Significant decrease of %insolubility and high enhancement of water solubility index were observed, respectively, and highly ordered conformation such as a helix structure was also indicated by Congo red reaction. We concluded that the modification effect for enhancing function of native Aloe gel was successfully obtained by DIS process using PEG as a dehydrating agent. These results suggested that this DIS process had a high potential for developing a new minimally processed product from Aloe vera leaf.