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Structure of skin in collagenous fibres : crossbreeds from black-and-white-cows X bulls of beef breeds / Piotr Zapletal in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 85, N° 6 (11-12/2001)
[article]
Titre : Structure of skin in collagenous fibres : crossbreeds from black-and-white-cows X bulls of beef breeds Type de document : texte imprimé Auteurs : Piotr Zapletal, Auteur ; J. Szarek, Auteur ; A. Weglarz, Auteur Année de publication : 2001 Article en page(s) : p. 207-210 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bovins -- Races
Collagène -- Analyse
Croisement de races
Cuirs et peaux de bovins
Peau -- analyse
Peau -- HistologieIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The aim of this study was to define the effect of crossing Black-and-White (CB) cattle with Italian beet' breeds (Piemontese-P. Marchigiana-M and Chianina-.Ch) and with Aberdeen Angus (AA) breed as well as that of pure Black-and—White breed with AA and Simmental (S) bulls, on the histological structure of skin tissue and properties of the collagen fibres. Knowledge of the arrangement and structure of' collagen fibres of the studied skins may be helpful in choosing the correct technological process for their dressing, or in developing a new one which would result in a better utilisation of raw material.
It can be stated that analysis of’ photographs of skin tissue under scanning electron microscopy (SEM) corresponds with the results of fibre measurements conducted under a light microscope. Skin tissue of bulls (CB x P) x AA and CB x AA showed the smallest spacing between the bundles of collagen fibres. The largest number of fibres in a bundle was contained in the skins of crossbreeds (CB x M) x AA and (CB x P) x AA. In contrast. the skins of S and (CB x Ch) x AA. crossbreeds (CB x M) x AA and (CB x P) x AA were characterised by a largest number of fine fibres in a bundle. Based on an organoleptic assessment the latter skin tissue displayed higher fineness and softness as well as better elasticity.
The thickness of the collagen fibres was relatively greater in the skins of those breed groups. which were characterised by a smaller number of fibres in a bundle. A high content of collagen in the skin of Simmental and CB x S bulls is indicative of its extended structure and denser network.Note de contenu : - Table 1 : Selected parameters of skin histological structure
- Table 2 : Selected parameters of skins ultrastruktural structure (scanning microscope)En ligne : https://drive.google.com/file/d/14rMlnaSUXfvi5a20zck_Strc8pn1HjBR/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40215
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 85, N° 6 (11-12/2001) . - p. 207-210[article]Study design for anti-pollution claims / Fabrice Perin in PERSONAL CARE EUROPE, Vol. 11, N° 4 (09/2017)
[article]
Titre : Study design for anti-pollution claims Type de document : texte imprimé Auteurs : Fabrice Perin, Auteur ; Céline Blanché, Auteur Année de publication : 2017 Article en page(s) : p. 67-69 Langues : Anglais (eng) Catégories : Etude in vitro
Etude in vivo
Evaluation
Peau -- analyse
Peau -- Effets de la pollution atmosphérique
Peau -- Nettoyage
Peau -- Soins et hygiène
Polluants atmosphériques
Tests d'efficacitéIndex. décimale : 668.5 Parfums et cosmétiques Résumé : This review has briefly discussed the rationale behind anti-pollution testing of cosmetic products, and presented some examples of pollution models as well as in vitro and in vivo tests. It is reasonable to assume that in vitro methods are used primarily as proof of concept to investigate and/or confirm the biological mechanism involved in the anti-pollution effect claimed of new ingredients, whereas in vivo tests are more interesting from the perspective of gathering data to support claims of finished cosmetic products. This article focused on methods usable for the evaluation of products applied on the skin. But it should not be forgotten that anti-pollution tests dedicated to hair care products are also available. To conclude with some perspectives, in the future it is likely that metabolomics, a relatively recent approach which deals with the analysis of metabolites present in biological samples combined with statistical analysis, has the potential to investigate profile variations in metabolites concentrations after exposure to pollutants. Metabolomics will certainly be extremely useful to investigate the impact of environmental pollutants on skin metabolism. And it will also be a new tool to demonstrate the effect of anti-pollution skin treatments. Note de contenu : - Design a study
- Fig. 1. Application of artificial dirt for the assessment of the efficacy of a cleansing treatment
- Fig. 2. Evaluation by a trained assessor of the radiance of the facial complexion using the CLBT methodEn ligne : https://drive.google.com/file/d/12Ccqq8Jen00TkecuQdqP4UIygGTMSgpT/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29324
in PERSONAL CARE EUROPE > Vol. 11, N° 4 (09/2017) . - p. 67-69[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19098 - Périodique Bibliothèque principale Documentaires Disponible Study for skin gloss perception using computer modulation and frequency separation on surface reflection in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 4 (08/2023)
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Titre : Study for skin gloss perception using computer modulation and frequency separation on surface reflection Type de document : texte imprimé Année de publication : 2023 Article en page(s) : p. 500-511 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse d'image L'analyse d'image est la reconnaissance des éléments contenus dans l'image. Il ne faut pas confondre analyse (décomposition en éléments) et traitement (action sur les composantes) de l'image.
Analyse des données
Brillance (optique)
Clarté de la peau
Evaluation visuelle
Modèles numériques
Peau -- analyse
Peau -- Perception visuelle
Réflectance
StatistiquesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Skin gloss is a parameter of beauty and health and is used to evaluate the efficacy of makeup or skin care products. Skin gloss is a perception-based characteristic, which yet needs to be evaluated quantitatively and objectively. This study aimed to investigate the factors affecting the perception of matte, glossiness and greasiness on Korean women's skin, focusing on the effect of surface reflection.
- Methods : In this study, a visual evaluation of skin gloss was performed using modulated images that combined facial reference (normal) images with images characterized by 64 different levels of surface reflection to investigate factors that might affect the perception of matte, glossy and greasy skin. Fifteen participants classified the respective images into three categories (matte, glossy and greasy), and the intensity of each image was rated using a three-point scale (weak, moderate or strong). A multinomial logistic regression analysis was performed using 960 data points (n = 64 × 15). A high-frequency average + 1 standard deviation (SD = 4) was set as the criterion for a highly glossy object.
- Results : A significant difference was found between the three categories considering four parameters: low-frequency mean (LFM) and SD (LFSD) and high-frequency mean (HFM) and SD (HFSD). The results of the multinomial logistic regression analysis showed that LFM and HFSD were significant influencing factors for perceiving matte, glossiness and greasiness. As the LFM and HFSD of the images increased, perception changed from matte, to glossy and greasy. Further, the total number and total area of highly glossy objects were significantly different among the three categories.
- Conclusion : We identified four different factors related to perceiving matte, glossiness and greasiness on the faces of Korean women, including the LFM and HFSD of surface reflection, as well as the number of highly glossy objects and the area of surface reflection. Furthermore, we identified evenness of shine as a key factor for the perception of greasiness. These parameters could be useful for distinguishing skin gloss and for a quantitative evaluation of greasiness.Note de contenu : - MATERIALS AND METHODS : Ethical considerations - Stimuli image preparation - Image analysis - Questionnaire assessment - Data analysis
- RESULTS : Raw low or high spatial frequency mean and SD of surface reflection - Comparison of LFM, LFSD, HFM and HFSD by categories - Prediction of skin gloss categories - Number and total area of highly glossy objects
- Table 1 : The characteristic description of applied products
- Table 2 : Mean and standard deviation of low- and high-frequency images
- Table 3 : Comparison of results among intensities of the categories
- Table 4 : Goodness-of-fit (Pearson chi-square p-value) and Nagelkerke's pseudo R2
- Table 5 : Results of the multinomial logistic regression analysis
- Table 6 : Results of the prediction of categories using the multinomial logistic regression
- Table 7 : Results of the multinomial logistic regression analysis of high-glossy objects (HG)DOI : https://doi.org/10.1111/ics.12859 En ligne : https://drive.google.com/file/d/1pSqV2VLvO8JldV45hw1dXEwrDk8up4at/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39880
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 45, N° 4 (08/2023) . - p. 500-511[article]Texture-based characterization of subskin features by specified laser speckle effects at λ = 650 nm region for more accurate parametric 'skin age' modelling / Ahmet B. Orun in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 39, N° 3 (06/2017)
[article]
Titre : Texture-based characterization of subskin features by specified laser speckle effects at λ = 650 nm region for more accurate parametric 'skin age' modelling Type de document : texte imprimé Auteurs : Ahmet B. Orun, Auteur ; H. Seker, Auteur ; V. Uslan, Auteur ; E. Goodyer, Auteur ; G. Smith, Auteur Année de publication : 2017 Article en page(s) : p. 320-326 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Lasers à solide
Peau -- analyse
Peau -- Texture
Perception de l'âge
Réseau bayésienIndex. décimale : 668.5 Parfums et cosmétiques Résumé : OBJECTIF : The textural structure of ‘skin age’-related subskin components enables us to identify and analyse their unique characteristics, thus making substantial progress towards establishing an accurate skin age model.
METHODS : This is achieved by a two-stage process. First by the application of textural analysis using laser speckle imaging, which is sensitive to textural effects within the λ = 650 nm spectral band region. In the second stage, a Bayesian inference method is used to select attributes from which a predictive model is built.
RESULTS : This technique enables us to contrast different skin age models, such as the laser speckle effect against the more widely used normal light (LED) imaging method, whereby it is shown that our laser speckle-based technique yields better results.
CONCLUSION : The method introduced here is non-invasive, low cost and capable of operating in real time; having the potential to compete against high-cost instrumentation such as confocal microscopy or similar imaging devices used for skin age identification purposes.Note de contenu : - MATERIALS AND METHODS : Data sets for laser-based and normal light imaging - System configuration - Laser speckle imaging - Texture analysis method - Bayresian networks
- RESULTS AND DISCUSSION : Optimization of light type and texture measure - Bayesian classification results - Results of laser speckle image-based configurationDOI : 10.1111/ics.12379 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28630
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 39, N° 3 (06/2017) . - p. 320-326[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18959 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : The benefits of skin lipidomics Type de document : texte imprimé Auteurs : Oliver Uecke, Auteur Année de publication : 2017 Article en page(s) : p. 62-63 Langues : Anglais (eng) Catégories : Chimie analytique
Dermatologie
Lipides
Peau -- analyse
Spectrométrie de masseIndex. décimale : 668.5 Parfums et cosmétiques Résumé : The lipid composition of human skin is essential for its function. However, the simultaneous quantification of a wide range of stratum corneum and sebaceous lipids is not trivial. We developed and validated a quantitative high-throughput shotgun mass spectrometry-based platform for lipid analysis of tape-stripped skin samples. Lipotype analyses also other types of skin samples, from monolayers to 3D models. It is now easy to investigate how the healthy skin lipidome is composed, how it changes in diseases or upon intervention with a drug or a cosmetic product. This lipidomic data can be used for cosmetic claim support, topical drug development and personalised cosmetics. More details about this method and its application can be found in: Sadowskii T. et al. 'Large-scale human skin lipidomics by quantitative, high-throughput shotgun mass spectrometry' Scientific Report 2017, doi: 10.1038/srep43761 Note de contenu : - Ultra-broad coverage
- Easy sampling
- Absolute quantification
- Reproducible results
- Full high-throughput
- Individual skin lipid profiles
- Advantages of lipidomics
- Table : Lipid classes covered by our method in skin samples
- FIGURES : 1. Tape sampling is comparable with scrape-biopsy - 2. Lipids are quantifiable in wide ranges - 3. Measurements are highly reproducible - 4. Various body spots have different lipid composition - 5. Skin lipid composition changes with ageEn ligne : https://drive.google.com/file/d/1rfosDp-xGRtqK1cOkzxH8lKrDGl-shpD/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29382
in PERSONAL CARE EUROPE > Vol. 11, N° 5 (11/2017) . - p. 62-63[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19976 - Périodique Bibliothèque principale Documentaires Disponible 19345 - Périodique Bibliothèque principale Documentaires Disponible The roughness of lip skin is related to the ceramide profile in the stratum corneum / Eiko Tamura in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 38, N° 6 (12/2016)
PermalinkTopical niacinamide enhances hydrophobicity and resilience of corneocyte envelopes on different facial locations / Rainer Voegeli in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 42, N° 6 (12/2020)
PermalinkPermalinkUltrastructural observations of skin samples obtained from various parts of animal and human body / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61 et 62 (Années 1977 et 1978)
PermalinkUltrastructural observations of skin samples obtained from various parts of animal and human body / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61, N° 1 (01-02/1977)
PermalinkUV reflectance photography of skin : what are you imaging ? / Jonathan M. Crowther in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 42, N° 2 (04/2020)
PermalinkWater retention of treated stratum corneum measured by a coupling method : thermal desorption-mass spectrometry / A. Gournay in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 17, N° 4 (08/1995)
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