• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2013년도 춘계학술대회 논문집
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• pp.637-638
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• 2013

• International Journal of Industrial Entomology and Biomaterials
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• 제3권1호
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• pp.1-6
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• 2001

Silk protein has been investigated by many researchers to apply to biomedical field. We reviewed biomedical applications of silk protein such as matrix of wound dressing and drug delivery system. Since silk fibroin/ poly (ethylene glycol) (PEG) semi-interpenetrating polymer networks showed good mechanical properties and wound healing phenomena, it can be used as wound dressing materials. Sericin nanoparticles pre- pared by conjugation with PEG and silk protein/ poloxamer mixture gel are expected to become a deliv- ery as matrix for hydrophobic drug.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 1997년도 추계학술대회 논문집
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• pp.219-224
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• 1997

In surface grinding, the contact between the grinding wheel and the workpiece introduces heat and resistance, which restrict the self-dressing of the grits and result in burrs and cracks on the workpiece. Therefore, before or during th grinding wheel for more accurate performance. In order to determine the dressing time monitoring method of grinding wheel in surface grinding, a three-dimensional computer simulation of the grinding operation has been attempted based on the contact mechanism and surface-shaping system between the grinding wheel and the workpiece. The optimal dressing time is determined based on the amount of the grain wear and work surface roughness.

• 세라미스트
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• 제9권6호
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• pp.37-41
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• 2006

A novel grinding technology, known as ELID (Electrolytic In-Process Dressing), which incorporates 'inprocess dressing' of metal- bonded diamond grinding wheels, provides continuous protruding abrasives effectively applied to ceramic grinding. This article describes the ELID-grinding method and introduces its application examples on ceramics

• 동아시아식생활학회지
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• 제12권5호
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• pp.407-414
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• 2002

본 연구는 마요네즈보다 낮은 칼로리와 아름다운 색을 지닌 키위드레싱의 Recipe를 표준화하고 저장성 확보를 위한 기초자료를 얻고자 기름의 종류, 기름의 양, 산의 종류, 양파의 첨가량에 따른 관능적 특성 및 저장기간에 따른 pH와 색도 변화를 살펴보았다. 그 결과를 요약하면 다음과 같다. 1. 기름의 종류를 달리하여 제조한 드레싱의 관능 검사 결과, 맛과 상큼한 맛, 전반적인 기호도에서 옥수수 기름보다는 올리브유의 기호도가 높았다. 2. 기름의 양을 달리하여 제조한 드레싱의 관능검사 결과, 기름의 양에 따른 유의한 차는 나타나지 않았고 칼로리를 낮추어 건강을 도모하기 위해서는 전체 키위 드레싱 중에 기름 120g의 첨가가 칼로리 면에서는 효율적이나 다른 맛을 고려해 볼 때 160g의 첨가가 바람직한 것으로 여겨진다. 이것은 마요네즈에 사용되는 일반적인 재료의 배합비율 즉 기름 75.0%보다 월등하게 기름의 사용량이 적고 색이 아름답다는 장점이 있어 그 가치가 높다고 사료된다. 3. 신맛의 종류를 달리하여 제조한 드레싱의 관능 검사 결과, 식초보다는 레몬즙만을 사용하였을 때가 향기에 있어서 가장 높은 기호도를 보였다. 특히 식초대신 레몬을 첨가함으로써 과일이 가지고 있는 비타민 C의 항산화 효과를 기대할 수 있어 더욱 바람직하다고 여겨진다. 4. 양파의 첨가량을 달리하여 제조한 드레싱의 관능검사 결과, 전반적인 기호도 및 상큼한 맛에 있어서 전체 키위 드레싱 중의 12%인 60g의 첨가가 3.64점, 3.61점으로 가장 좋은 평가를 보였다. 5. 키위 드레싱의 저장 기간에 따른 관능검사 결과, 향기, 맛, 전반적인 기호도 모두 저장 10일째에 가장 높은 기호도를 나타내었다. 6. pH는 저장기간이 길어질수록 점차 증가하여 제조 당일에 2.67에서 저장 17일에 2.99로 높아졌다. 7. 키위드레싱의 저장에 따른 색도를 살펴보면 명도(L값)는 저장 3일에 가장 낮은 값을 보였고 녹색도(a값)는 저장기간이 경과함에 따라 오히려 증가하여 더 짙은 녹색을 띄었으며 황색도(b값)는 저장기간이 길어질수록 감소되었다. 이상의 결과로 볼 때 키위드레싱은 기름으로 올리브유를 사용하고, 기름의 양은 전체 드레싱의 32%를 첨가하며, 산은 레몬즙만 12%를 사용하고, 양파즙은 12%를 첨가하여 제조하는 것이 가장 바람직하다고 여겨지며 저장 10일까지의 품질 변화는 일어나지 않았다.

• 한국식생활문화학회지
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• 제35권4호
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• pp.387-391
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• 2020

This study assessed the color, polyphenol content, and sensory characteristics of dressing containing varying concentrations (0, 3, 6 and 9%) of freeze-dried Natto. We determined that the absence of freeze-dried Natto (0%) imparted the highest additive value for both L and a, b. The polyphenol contents obtained were 0.63, 0.69, 0.74, and 0.82 mg/g for 0, 3, 6 and 9% of dressing containing freeze-dried Natto, respectively. The appearance, color, taste, texture, and overall preference of dressings with freeze-dried Natto showed significant differences between the samples. The overall preference was highest at 5.92 points, with dressing containing 9% Natto. The quality characteristics of the 9% added samples exhibited significantly higher values as compared to those of the controls, raising the possibility of development as a health-functional dressing.

• Archives of Plastic Surgery
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• 제33권1호
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• pp.131-134
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• 2006

The closed suction drain is commonly inserted after various surgical procedures. It has an important role to prevent possible hematoma or seroma that can cause postoperative wound problems. But there is still no consensus on managing the insertion site of suction drain after operation. Suture-tie fixation of drain to skin and classical Y shape gauze dressing is a usually accepted method, but it has many limitations. We introduce a new approach to the care for the insertion site of suction drain by using occlusive transparent film dressing, $IV3000^{(R)}$(Smith & Nephew, London, UK). By using transparent film, insertion site of drain can be easily checked without removal of dressing. Because it can reduce the tension of suture-tie fixation, it helps to prevent skin injury. Furthermore, occlusive film dressing can block air leakage from insertion site of drain, and the water-proof character of film allows patients to take a shower without dressing change. This new method is more convenient, more efficient, and less harmful to skin than classic one.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.70-73
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• 2002

Using zirconium ceramics makes the ferrule, which is the part of optical communications. The quality of optical communications is directly affected by the concentricity of the optic ferrule. The products of optic ferrule should be meet the following general conditions which are the outer diameter of 2.5mm and the inner diameter of 0.125mm, and high quality conditions which are the concentricity of 0.1~$0.3\mu\textrm{m}$, the form accuracy of $0.2\mu\textrm{m}$, the roundness and the cylindricity of $0.1\mu\textrm{m}$ and the surface roughness of 10nm. Generally, the diamond wheel is used for the high efficiency and precision grinding of the materials. It is good for keeping the shape as it has little wear. Because of the loading phenomena, however, it is difficult to keep the fresh surface of the wheel. In grinding process, grinding fragments resemble fine powders rather than chips. It can easily get attached to the wheel surface and thus cause a loading. The loading takes place, in which the impurities stick to the wheel surface, and the grinding characteristics of wheel is deteriorated. To prevent all of these, a suitable dressing method should be used for the wheel. In this research, the dressing system fur co-axial grinding machine was designed and produced for the machining of ferrule, which is a high performance part. The performance of the developed dressing system was evaluated by measuring the form accuracy of ferrule, which is machined by the dressed wheel in developed dressing system.

• 한국식품조리과학회지
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• 제33권3호
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• pp.300-306
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• 2017

Purpose: This study aimed to prepare sea tangle vinegar and test its applicability as a vinegar-based functional salad dressing in terms of physicochemical properties. Methods: Sea tangle vinegar was prepared by mixing sea tangle with sugar and vinegar and fermenting the mixture at room temperature for 3 months. The resulting sea tangle vinegar was examined for its physicochemical properties and antioxidant activity with brewed vinegar and persimmon vinegar as controls. Results: The sea tangle vinegar showed significantly higher viscosity than control vinegars, and shear thinning behavior that is typical for salad dressing containing polymers. In addition, storage modulus (G′) of sea tangle vinegar was relatively high in dynamic viscosity measurement while that of control vinegars remained negligible. Together with the high soluble solids content of sea tangle vinegar, rheological behavior indicates that sea tangle vinegar had soluble polysaccharides extracted from sea tangle, consequently leading to an increase in viscosity. Titratable acidity (TA) and pH were 2.52% and 3.58, respectively, which satisfies the TA and pH requirements for microbiological safety of a salad dressing. Absorbance at 285 nm and Folin Ciocalteu's reagent method revealed that sea tangle vinegar contained antioxidative phenolic compounds. Conclusion: This study demonstrates that sea tangle vinegar could be potentially developed as a vinegar-based functional salad dressing when combined with sensory evaluation in the future.

• 대한간호학회지
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• 제50권4호
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• pp.541-553
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• 2020

Purpose: In spite of the recent application of a general infection control method, central line-associated infections is still relatively high in Korea. Central line bundle with Chlorhexidine gluconate (CHG) tegaderm dressing was reported to be effective in reducing catheter colonization and central line-associated bloodstream infections (CLABSI). Therefore, this study aimed to examine the incidences of catheter colonization occurrence and CLABSI while using Tegaderm vs. CHG Tegaderm dressings. Methods: We used a descriptive design. 400 patients who had central venous catheters were selected from four hospitals in the Korean National Healthcare-associated Infections Surveillance System. Of all subjects, 200 used Tegaderm™ (Tegaderm group), and the remaining 200 used CHG Tegaderm (CHG Tegaderm group) dressing at the catheter insertion site. Data were analyzed using the χ² test or Fisher's exact test, t-test, and logistic regression analysis using SPSS WIN 21.0. Results: In the Tegaderm and CHG Tegaderm groups, CLABSI incidences were 5.89 and 1.79 per 1,000 catheter-days, catheter colonization incidences were 3.93 and 1.43 per 1,000 catheter-days, and central line bundle compliance rates were 26.0% and 49.0%, respectively. Catheter colonization risk factors were 'reinsertion after failure' and 'Tegaderm dressing' at the central line insertion site. CLABSI risk factors were 'incomplete performance of 7 central line bundle items' and 'Tegaderm dressing' at the central line insertion site. Conclusion: A further prospective study is needed to examine the effects of central line bundle with CHG Tegaderm dressing, avoiding central line reinsertion after failure, and improving the bundle compliance in reducing catheter colonization and CLABSI.