• Title/Summary/Keyword: Wrinkles

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The Effect of Needle-embedding Therapy on the Improvement Against Facial Wrinkles: A Case Series (매선치료의 안면주름 개선효과 10례)

  • Lee, Seung-Min;Lee, Chang-Woo;Jeon, Ju-Hyun;Kim, Young-Il
    • Journal of Acupuncture Research
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    • v.28 no.4
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    • pp.143-147
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    • 2011
  • Objectives : The purpose of this study was to examine the effect of needle-embedding therapy against facial wrinkle. Methods : Ten patients with facial wrinkles were treated with needle-embedding therapy. Pictures and satisfaction questionnaire were compared before and after the treatment. And all patients were examined for adverse side effect after needle-embedding therapy. Results : After treatment, facial wrinkles were visibly improved after needle-embedding therapy. There were no adverse side effect except bruise. Conclusions : This study suggests that needle-embedding therapy can improve facial wrinkles.

Causes of Wrinkle in Silky Wallpaper and Its Solution

  • Won, Jong-Myoung
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.39 no.5
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    • pp.32-38
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    • 2007
  • The purpose of this study is to investigate the cause of fine wrinkles occurred in silky wallpaper and its solution. The characteristics of base papers, wallpapers and adhesives (conventional and modified) were evaluated to find the possibility for the occurrence of fine wrinkles. It was found that the base papers and wallpapers did not cause the occurrence of silky wallpaper. It was concluded that the fine wrinkles in silky wallpaper was caused by the nonuniform distribution of adhesive, the localized shrinkage of adhesive and the breaking the balance between the resistance of wallpaper and shrinkage of adhesive. Three possible solutions for the prevention of the occurrence of fine wrinkles in silky paper were recommended.

A Study on the Behavior of Wrinkles in Cup Drawing with AL alloy (AL합금의 용기 성형시 주름의 거동에 관한 연구)

  • 김진무;최용식
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2002.10a
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    • pp.845-848
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    • 2002
  • The wrinkling in the flange and wall of a part is a predominent failure mode in stamping of sheet metal parts. In many cases this wrinkling may be eliminated by appropriate control of the blank holding forco(BHF), but BHF affects the draw depth. Gotoh had studied the wrinkles under 0.02mm in height. In general, the height of wrinkles could be limited under 0.2mm practically. Therefore small BHP can be allowed so that the depth of drawing could be increased. Authors research the variation of the wrinkles in flange in the course of cup drawing by using aluminium alloy Al050 and A5052.

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Controlled Formation of Surface Wrinkles and Folds on Poly (dimethylsiloxane) Substrates Using Plasma Modification Techniques

  • Nagashima, So;Hasebe, Terumitsu;Hotta, Atsushi;Suzuki, Tetsuya;Lee, Kwang-Ryeol;Moon, Myoung-Woon
    • Proceedings of the Korean Vacuum Society Conference
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    • 2012.08a
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    • pp.223-223
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    • 2012
  • Surface engineering plays a significant role in fabricating highly functionalized materials applicable to industrial and biomedical fields. Surface wrinkles and folds formed by ion beam or plasma treatment are buckling-induced patterns and controlled formation of those patterns has recently gained considerable attention as a way of creating well-defined surface topographies for a wide range of applications. Surface wrinkles and folds can be observed when a stiff thin layer attached to a compliant substrate undergoes compression and plasma treatment is one of the techniques that can form stiff thin layers on compliant polymeric substrates, such as poly (dimethylsiloxane) (PDMS). Here, we report two effective methods using plasma modification techniques for controlling the formation of surface wrinkles and folds on flat or patterned PDMS substrates. First, we show a method of creating wrinkled diamond-like carbon (DLC) film on grooved PDMS substrates. Grooved PDMS substrates fabricated by a molding method using a grooved master prepared by photolithography and a dry etching process were treated with argon plasma and subsequently coated with DLC film, which resulted in the formation of wrinkled DLC film aligning perpendicular to the steps of the pre-patterned ridges. The wavelength and the amplitude of the wrinkled DLC film exhibited variation in the submicron- to micron-scale range according to the duration of argon plasma pre-treatment. Second, we present a method for controlled formation of folds on flat PDMS substrates treated with oxygen plasma under large compressive strains. Flat PDMS substrates were strained uniaxially and then treated with oxygen plasma, resulting in the formation of surface wrinkles at smaller strain levels, which evolved into surface folds at larger strain levels. Our results demonstrate that we can control the formation and evolution of surface folds simply by controlling the pre-strain applied to the substrates and/or the duration of oxygen plasma treatment.

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A Case Report of facial wrinkles and folds improved by using the Thread Embedding Acupuncture (TEA) (볼륨매선침을 병행한 매선침법의 안면주름 개선 효과 3례: 증례 연구)

  • Yun, Young-Hee;Leem, Jung-Tae;Ahn, Jin-Hyang;Lee, Jin-Hyuk;Choi, Ye-Yong;Shin, Jeong-Min
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.31 no.3
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    • pp.97-106
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    • 2018
  • Objectives : Recently, Thread Embedding Acupucnture (TEA) targeting under dermis became known to be effective for facial wrinkles and folds; its practice has begun in clinics. The introduction of a new form of TEA is continuing, and 'Volume TEA' is introduced recently. Therefore, we would like to report on the improvement of facial wrinkles by using the recently introduced 'volume TEA'. Methods : We reviewed the medical records of three patients who received 'Volume TEA' treatment at a Korean medical clinic, the photographs taken before and after the procedure were corrected using a Photoshop program and the length of the each wrinkles and folds were measured. Results : The length of wrinkles measured in all three cases decreased. Especially, the decrease of the length of the nasolabial folds was obvious. In case 1, the length of the nasolabial folds of 177mm and 97mm were reduced to 94mm and 63mm, respectively. In the case 2, the length of the nasolabial folds of 155mm and 155mm were reduced to 0mm and 70mm, respectively, after the procedure. In case 3, the length of the nasolabial folds of 170mm and 50mm decreased to 38mm and 37mm after the procedure, respectively. Conclusions : At present, it seems that the ongoing accumulation of relevant studies on the efficacy and safety of wrinkle and folds of TEA seems necessary. This study also has some significance in the level of case report.

Efficacy Evaluation of Anti-wrinkle Products in Japan

  • Masaki Hitoshi
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.29 no.2 s.43
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    • pp.67-77
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    • 2003
  • Two categories of cosmetic products, cosmetics and quasi-drugs, have been established by the Ministry of Health, Labor and Welfare (MHLW) in Japan. Japanese pharmaceutical law has defined that products categorized as cosmetics do not exhibit any effects on human skin. In fact, cosmetic products are not permitted to claim any efficacy. On the other hand, products in the quasi-drug category can claim several efficacies such as anti-inflammatory effects, whitening/lightning effects, hair growth effects and so on. Unfortunately, the Japanese MHLW has not yet approved the efficacy of anti-aging/anti-wrinkle effects as a claim point. However, the population is aging, and the demand for anti-aging/anti-wrinkle products is increasing year by year. Japanese cosmetic companies have proposed to the MHLW that anti-aging/anti-wrinkle agents be approved as a claim concept of a quasi-drug. However, unified evaluation methods for anti-aging/anti-wrinkle effects have not been established. Currently, each company evaluates the efficacy of products/materials using their own original methods. Thus, to request approval of the MHLW, the establishment of a unified evaluation method is needed. Consequently, the Japan Cosmetic Industry Association (JCIA) has established a task force to develop guidelines for evaluating anti-wrinkle effects in 1998. In conclusion, the JCIA would like to adopt visual and image analysis scales to evaluate the anti-wrinkle effects objectively. Generally, wrinkles are roughly classified into three groups as fine wrinkles, linear deep wrinkles and crow's feet. However, academic societies of dermatology or cosmetics have not yet established a definition of wrinkles in Japan. Thus, in advance of setting up an evaluation method, the definition of wrinkles f3r evaluation must be decided. Wrinkles are defined by the task force of the JCIA as follows; furrows that people can recognize visually and that appear on the forehead, the corners of the eyes and the backs of the neck with aging. In addition, furrows are emphasized by exposure to solar light and by dry conditions. Visual evaluation is the most sensitive method and can be applied to most types of wrinkles. However, visual evaluation is hard to express digitally as results. Besides, in the case of image analysis, comparisons of data obtained from distinct examinations can not be done, because data from image analysis are relative values. Thus, to enhance the reliability of the evaluations, the adoption of an objective scale was required. The principle of the evaluation method is to analyze images taken from silicone replicas of wrinkle areas using several parameters, such as the proportion of the wrinkle $area({\%})$, the mean depth of the wrinkles (mm), the mean depth of the deepest wrinkle (m) and the deepest point on the deepest wrinkle. Lights are shown on the skin replica from an orthogonal direction of the main orientation of the wrinkle, and the resulting shadow images are quantified by the image analysis method. To increase the precision of the data or to allow comparisons of independent examinations, a scale with furrows of several depths, 200, 400, 600, 800, and $1000{\mu}m$, is adapted in the evaluation system. I will explain the guidelines established by the JCIA in the presentation.

Analysis of Formability and Wrinkle Formation according to the Thickness of Ultra-thin Stainless Steel in the Incremental Sheet forming Process (점진적 판재 성형 공정에서 스텐리스 극박판의 두께에 따른 성형성 및 주름 발생 특성 분석)

  • Lee, J.H.;Lee, G.I.;Jeong, M.S.;Jung, K.S.;Lee, C.W.
    • Transactions of Materials Processing
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    • v.28 no.6
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    • pp.328-335
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    • 2019
  • Demand for ultra-thin materials is increasing due to their light-weight and versatile properties. In this work, the formability of the ultra-thin stainless steel sheets of various thicknesses in the incremental sheet forming (ISF) process is investigated. The effects of the thickness on formability were evaluated with forming experiments of the truncated cone shape with 10° intervals. As the thickness of the material decreased, the maximum forming angle decreased and wrinkles also occurred quickly. The maximum forming angles in the truncated cone shape without the wrinkles for the thickness of 0.05 mm, 0.08 mm, and 0.1mm were 30°, 40°, and 50°, respectively. Wrinkles occurred in a twisted shape along the moving direction of the tool. As the material thickness increased, the size of the wrinkles increased.

A Study on the Behavior of Wrinkles in Cup Drawing with Al alloy by FEM (유한요소법에 의한 합금의 용기 성형시 Al 주름의 거동에 관한 연구)

  • Ko D.L.;Jeon C.Y.;Kim J.M.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.1240-1243
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    • 2005
  • The wrinkling in the flange and wall of a part is a predominant failure mode in stamping of sheet metal parts. In many cases this wrinkling may be eliminated by appropriate control of the blank holding force(BHF), but BHF affects the draw depth. Gotoh had studied the wrinkles under $20{\mu}$ in height. In general, the height of wrinkles could be limited under $200{\mu}$ practically. Therefore small BHF can be allowed so that the depth of drawing could be increased. This paper represents the variation of the wrinkles of flange in the part of cup drawing by using aluminium alloy A1050 and A5052. This simulation is used by the explicit finite elements code $PAM-STAMP^{TM}$. The computed results are compared with the experimental results to show the validity of the analysis.

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Visual Perception of Garment Surface Appearance

  • Fan, Jintu;Liu, Fu
    • Science of Emotion and Sensibility
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    • v.5 no.3
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    • pp.1-10
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    • 2002
  • This paper concerns with the relationship between the visual perception of the degree of pucker or wrinkles of garment surfaces and the geometrical parameters of surfaces. In this study, four potentially relevant parameters of the surface profile are considered, namely, the variance ($\sigma$$^2$), the cutting frequency (F$\_$c/), the effective disparity curvature (D$\_$ce/) (Defined as the average disparity curvature of the wrinkled surface over the eyeball distance of the observer) and the frequency component of the disparity curvature ( D$\_$cf/). Based on the experiments using garment seams having varying degree of pucker (i.e. the wrinkles along a seam line), it was found that, while the logarithm of each of these four parameters has a strong linear relationship with the visually perceived degree of wrinkles, following the Web-Fetchner Law, the effective disparity curvature ( D$\_$ce/) and the frequency component of the disparity curvature (D$\_$cf/) appeared to have stronger relationships with the visual perception. This finding is in agreement with the suggestion by Rogers '||'&'||' Cagenello that human visual system may compute the disparity curvature in discriminating curved surfaces. It also suggested an objective method of measuring the degree of surface wrinkles.

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Deep Learning-based Automatic Wrinkles Segmentation on Microscope Skin Images for Skin Diagnosis (피부진단을 위한 딥러닝 기반 피부 영상에서의 자동 주름 추출)

  • Choi, Hyeon-yeong;Ko, Jae-pil
    • Journal of Advanced Navigation Technology
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    • v.24 no.2
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    • pp.148-154
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    • 2020
  • Wrinkles are one of the main features of skin aging. Conventional image processing-based wrinkle detection is difficult to effectively cope with various skin images. In particular, Wrinkle extraction performance is significantly decreased when the wrinkles are not strong and similar to the surrounding skin. In this paper, deep learning is applied to extract wrinkles from microscopic skin images. In general, the microscope image is equipped with a wide-angle lens, so the brightness at the boundary area of the image is dark. In this paper, to solve this problem, the brightness of the skin image is estimated and corrected. In addition, We apply the structure of semantic segmentation network suitable for wrinkle extraction. The proposed method obtained an accuracy of 99.6% in test experiments on skin images collected in our laboratory.