An automatic procedure that grades some facial skin structural signs: agreements and validation with clinical assessments made by dermatologists / Frédéric Flament in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 41, N° 5 (10/2019)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 41, N° 5 (10/2019) . - p. 472-478 Titre : An automatic procedure that grades some facial skin structural signs: agreements and validation with clinical assessments made by dermatologists Type de document : texte imprimé Auteurs : Frédéric Flament, Auteur ; M. Hofmann, Auteur ; E. Roo, Auteur ; C. Raimbault-Gerard, Auteur ; B. Chuberre, Auteur ; Y. Zhang, Auteur ; R. Jiang, Auteur ; Irina Kezele, Auteur ; J. Zhang, Auteur ; E Elmozino, Auteur ; J. Coquide, Auteur ; Vincent Arcin, Auteur ; Parham Aarabi, Auteur Année de publication : 2019 Article en page(s) : p. 472-478 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caucasien(ne)s Dermatologie Etudes cliniques Evaluation Femmes Photovieillissement (dermatologie) Système de notation Vieillissement cutané Visage Index. décimale : 668.5 Parfums et cosmétiques Résumé : - OBJECTIVE : To confirm the robustness and validity of an automatic scoring system, algorithm-based, that grades the severity of nine facial signs through "selfies" smartphones pictures taken by European Caucasian women through dermatological assessments. METHODS: 157 Caucasian women from three countries (France, Germany, Spain), of different ages (20-75 years), took one "selfie" image by the frontal camera of their smartphones whereas local dermatologists photographed them with the back camera of the same smartphone. The same nine facial signs of these subjects were initially graded by these local dermatologists, using referential Skin Aging Atlases. All 314 "selfies" images were then further automatically analyzed by the algorithm. The severity of facial signs (wrinkles, pigmentation, ptosis, skin folds etc.) were statistically compared to the assessments made by the three dermatologists, taken as ground truth. - RESULTS : Highly significant coefficients of correlation (P < 0.001) were found in the three cohorts between the grades provided by the system and those from dermatologists in live. The back camera - of a better resolution than the frontal one - seems affording slightly more significant correlations. However, although significantly correlated, the signs of vascular disorders and cheek skin pores present some disparities that are likely linked to the technical diversity of smartphones or self-shootings, leading to lower coefficients of correlations. - CONCLUSION : This automatic scoring system offers a promising approach in the harmonization of Dermatological assessments of skin facial signs and their changes with age or the follow up of anti-aging treatments. Note de contenu : - Subjects - Protocol - Statistics DOI : 10.1111/ics.12563 En ligne : https://drive.google.com/file/d/15YUKd-XvjX_G9bcL0QhcIQjC6tPn3O6_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33214 [article]

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Crystallization behavior and mechanical properties of nanosilica-reinforced isotactic polypropylene composites / J. Li in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 5 (11/2015)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXX, N° 5 (11/2015) . - p. 542-547 Titre : Crystallization behavior and mechanical properties of nanosilica-reinforced isotactic polypropylene composites Type de document : texte imprimé Auteurs : J. Li, Auteur ; L.-J. Long, Auteur ; W.-T. He, Auteur ; K. Zhang, Auteur ; Y.-S. Xiang, Auteur ; J. Zhang, Auteur ; M.-M. Zhang, Auteur ; C.-P. Yang, Auteur ; J. Yu, Auteur Année de publication : 2015 Article en page(s) : p. 542-547 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Charges (matériaux) Flexion (mécanique) Gel de silice Nanoparticules Polymères -- Propriétés mécaniques Polymères isotactiques Polypropylène Résistance au chocs Silice La silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux. La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...). Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale. Structure cristalline (solide) Traction (mécanique) Index. décimale : 668.9 Polymères Résumé : Two different types of inorganic silica fillers, nano-silica powder (NSP) and colloidal silica sol (CSS) were added into isotactic polypropylene (iPP) with low silica content (0.2 wt%) and the influence of the two silica fillers on the crystallization behavior and mechanical properties of iPP were investigated. Differential scanning calorimeter (DSC) results showed that the crystallization temperature of iPP with CSS and NSP were increased by 4.1 °C, and 2.4 °C, respectively. The tensile strength, flexural strength, and izod impact strength of iPP/CSS (33.75 MPa, 33.04 MPa, and 4.80 kJ/m2) were higher than that of iPP/NSP (32.09 MPa, 32.27 MPa, and 4.25 kJ/m2). In addition, the haze value of iPP/CSS was decreased from 37.6 % to 27.6 %, which was 4.7 % lower than that of iPP/NSP (32.3 %). The better performance of CSS as ascribed to its better dispersion ability in iPP matrix than NSP, and it was verified by scanning electron micrograph (SEM) and transmission electron microscope (TEM). Overall, these results indicated that inorganic silica sols had a potential application in the nanoparticle-reinforced composites field. Note de contenu : - EXPERIMENTAL : Raw materials - Preparation of iPP/silica composites - Characterization - RESULT AND DISCUSSION : Crystalline structure and crystallization behavior DOI : 10.3139/217.3065 En ligne : https://drive.google.com/file/d/1TckKt9TRURlEoVI-WZbYRc0LDIc3Gqeg/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24815 [article]

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Effect of aspect ratio of whisker on the fibrillation of liquid crystalline polymer in polysulfone matrix / J. Chen in INTERNATIONAL POLYMER PROCESSING, Vol. XXII, N° 2 (05/2007)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXII, N° 2 (05/2007) . - p. 166-172 Titre : Effect of aspect ratio of whisker on the fibrillation of liquid crystalline polymer in polysulfone matrix Type de document : texte imprimé Auteurs : J. Chen, Auteur ; J. He, Auteur ; J. Zhang, Auteur ; L. Wu, Auteur ; P. Chen, Auteur Année de publication : 2007 Article en page(s) : p. 166-172 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : The influence of content and aspect ratio of whiskers, calcium carbonate and aluminum borate, on the morphology evolution of liquid crystalline polymer (LCP) was investigated in polysulfone (PSF) matrix. The study showed that the deformation of LCP droplets was significantly promoted by adding whiskers into PSF/LCP blends, and the longer whisker produced a more pronounced fibrillation effect. The analysis of flow field and elasticity of system showed that the addition of longer whiskers increased the elasticity of materials more efficiently and enhanced the vortex in the converging flow area at the entry of capillary, which resulted in an increase of the elongational stress and promoted the formation of longer LCP fibrils in PSF/whisker system. DOI : 10.3139/217.0993 En ligne : https://drive.google.com/file/d/1zMbkNbK89nvpnAw_r82AsIbKil62befx/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2756 [article]

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Energy curable resin for high performance hardcoats / Philippe de Groote in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4578 (11/2012)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 202, N° 4578 (11/2012) . - p. 26-27 Titre : Energy curable resin for high performance hardcoats Type de document : texte imprimé Auteurs : Philippe de Groote, Auteur ; M. Hutchins, Auteur ; A. Chen, Auteur ; Stéphane Cappelle, Auteur ; Mouhcine Kanouni, Auteur ; J. Zhang, Auteur Année de publication : 2012 Article en page(s) : p. 26-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Formulation (Génie chimique) Réticulation (polymérisation) Revêtements -- Séchage sous rayonnement ultraviolet Surfaces -- Nettoyage Index. décimale : 667.9 Revêtements et enduits Résumé : With the increasing use of tactile touch interface and high gloss finish surfaces in various market sectors, including packaging, automotive, appliances, consumer goods and teletronics, the need for an easy-to-clean (E2C) surface property is growing and posing a challenge to designers and coating formulators. As a consequence, investigation of these new functional surfaces has gained increasing interest in technical and scientific literature. Yet, the most effective solutions currently available are quite costly and, consequently, only used in high value components such as touch screen displays. To overcome this high cost barrier, Cytec introduced its latest development for energy curable coatings, namely Ebecryl 8110 resin for consumer electronics components such as casings etc. This novel and patent-pending UV resin enables paint formulators to develop coatings that meet the overall coating performance requirement (hardness, adhesion, chemical resistance) as well as permanent easy fingerprint removal/easy-to-clean surface property. Note de contenu : - Effect of composition - Effect of application conditions on E2C performance - Robustness of the E2C property and benchmarking En ligne : https://drive.google.com/file/d/1LYSchZWCAav-ntFtUGbxEOaSi9tHtii6/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16548 [article]

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Fabrication and characterization of electrospun thermoplastic polyurethane/fibroin small-diameter vascular grafts for vascular tissue engineering / E. Yu in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 5 (11/2016)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXI, N° 5 (11/2016) . - p. 638-646 Titre : Fabrication and characterization of electrospun thermoplastic polyurethane/fibroin small-diameter vascular grafts for vascular tissue engineering Type de document : texte imprimé Auteurs : E. Yu, Auteur ; J. Zhang, Auteur ; J. A. Thomson, Auteur ; Lih-Sheng Turng, Auteur Année de publication : 2016 Article en page(s) : p. 638-646 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cellules -- Cultures et milieux de culture Electrofilature Fourier, Spectroscopie infrarouge à transformée de Ingénierie tissulaire Polymères en chirurgie Polymères en médecine Polyuréthanes Protéines végétales Prothèses Prothèses vasculaires Soie et constituants Technologie médicale Textiles et tissus à usages médicaux Textiles et tissus à usages techniques Textiles et tissus à usages techniques -- Propriétés mécaniques Index. décimale : 668.4 Plastiques, vinyles Résumé : The demand for small-diameter blood vessel substitutes has been increasing due to a shortage of autograft vessels and problems with thrombosis and intimal hyperplasia with synthetic grafts. In this study, hybrid small-diameter vascular grafts made of thermoplastic polyurethane (TPU) and silk fibroin, which possessed a hybrid fibrous structure of an aligned inner layer and a random outer layer, were fabricated by the electrospinning technique using a customized striated collector that generated both aligned and random fibers simultaneously. A methanol post-treatment process induced the transition of fibroin protein conformation from the water-soluble, amorphous, and less ordered structures to the water-insoluble ?-sheet structures that possessed robust mechanical properties and relatively slow proteolytic degradation. The methanol post-treatment also created crimped fibers that mimicked the wavy structure of collagen fibers in natural blood vessels. Ultrafine nanofibers and nanowebs were found on the electrospun TPU/fibroin samples, which effectively increased the surface area for cell adhesion and migration. Cyclic circumferential tensile test results showed compatible mechanical properties for grafts made of a soft TPU/fibroin blend compared to human coronary arteries. In addition, cell culture tests with endothelial cells after 6 and 60 days of culture exhibited high cell viability and good biocompatibility of TPU/fibroin grafts, suggesting the potential of applying electrospun TPU/fibroin grafts in vascular tissue engineering. Note de contenu : - CELL CULTURE AND SEEDING - RESULTS AND DISCUSSION : Fourier transform infrared spectroscopy - Structure and morphology - Mechanical properties - Cell culture results DOI : 10.3139/217.3247 En ligne : https://drive.google.com/file/d/194seUjb8XJD2n49MLWsSuLnGz-z9Vk8L/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27401 [article]

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Flow properties and morphology of PC/LCP blends affected by the addition of glass fiber and resulted mutual influences / X. Zheng in INTERNATIONAL POLYMER PROCESSING, Vol. XVIII, N° 1 (03/2003)  

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In vivo anti-ageing activity of cream containing niosomes loaded with purple glutinous rice (Oryza sativa Linn.) extract / J. Manosroi in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 42, N° 6 (12/2020)  

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Latest development of energy curable resin for high performance easy-to-clean hardcoats / Philippe de Groote in PAINTINDIA, Vol. LXII, N° 9 (09/2012)

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A new procedure, free from human assessment, that automatically grades some facial skin signs in men from selfie pictures. Application to changes induced by a severe aerial chronic urban pollution / Y. Zhang in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 42, N° 2 (04/2020)  

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Roll-to-roll hot embossing of high aspect ratio micro pillars for superhydrophobic applications / N. Kodihalli Shivaprakash in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 5 (11/2019)  

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