Sun Protection in Man

Author: P.U. Giacomoni
Publisher: Elsevier
ISBN: 9780080518169
Format: PDF, Mobi
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"Sun Protection in Man" looks at the beneficial and harmful effects of solar radiation. The physiological consequences of sun exposure have been systematically studied starting at the end of the nineteenth century and we now have accumulated knowledge about how Caucasian and Asian skins reacts to solar radiation. The chemical effects of solar ultraviolet radiation have been analyzed with particular emphasis during the second half of the twentieth century. Research on micro-organisms has allowed us to understand the mechanisms of UV-induced mutagenesis and photosensitization. Studies with laboratory rodents have opened the path to the understanding of UV-induced immune-depression, carcinogenesis, photo-damage and photo-aging. The results of these studies have enabled other scientists to investigate the same phenomena in human organs such as the skin and the eye. UV radiation damages hair, as well. The present knowledge in these fields is summarized in some of the chapters of this monograph. Mass phenomenon in Europe with the generalization of summer vacations which were a consequence of social reforms introducing the concept of "paid vacations". This created a need for protection and opened a market for sunscreens. This monograph is concerned with sun protection as a whole and is not just "another book on sunscreens". Nonetheless, in these days of general concern, it is important to learn about the efficiency of sunscreens. Several authors discuss how to reduce the number of impinging photons and explain why sunscreens seem to offer less protection than expected. Guidelines are given on how to use sunscreens in everyday life, which are expressed rigorously though clearly, for access to the common reader. Our knowledge on the relationship between sun and humans is at the early stages of development. Industrial and commercial activities are concerned by the development of this knowledge, and rules have been and will be promulgated to guarantee efficacy and safety of sun-products. It is hoped that this monograph will be of interest to the scholar, the layman and the legislator.

Photodynamic Therapy and Fluorescence Diagnosis in Dermatology

Author: P. Calzavara-Pinton
Publisher: Elsevier
ISBN: 9780080538846
Format: PDF, Mobi
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Photodynamic therapy has been widely investigated over the past two decades and is emerging as a promising therapeutic modality for skin cancers and several inflammatory diseases. This growing interest is based on the availability of a new simple, effective and safe regimen using the topical application of a pro-drug, 5-aminolevulinic acid, as well as on the development of new "second generation" photosensitizers, namely 5-aminolevulinic acid-esters, phthalocyanines, chlorins, porphycenes and hypericin. In contrast to hematoporphyrin derivatives, these compounds are characterized by short-lasting generalized skin photosensitivity. These dyes are available for either topical or systemic delivery and are well characterized. The basic principles of PDT is more complex than chemotherapy or other pharmacological modalities. PDT involves not only a drug but an otherwise harmless compound that is activated by visible light. The interaction of these two treatment components is PDT. The variability of these both components results in a complexity of the treatment that may disorient the clinician who does not have specific experience in this field. This book aims to focus experimental and clinical findings on PDT in order to attract and direct the attention of a growing number of dermatologists.

Photomovement

Author: D.-P. Häder
Publisher: Elsevier
ISBN: 9780080538860
Format: PDF, ePub
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This volume emphasizes the involvement of all facets of biology in the analysis of environmentally controlled movement responses. This includes biophysics, biochemistry, molecular biology and as an integral part of any approach to a closer understanding, physiology. The initial euphoria about molecular biology as the final solution for any problem has dwindled and the field agrees now that only the combined efforts of all facets of biology will at some day answer the question posed more than hundred years ago: "How can plants see?". One conclusion can be drawn from the current knowledge as summarized in this volume. The answer will most likely not be the same for all systems.

Cosmetic Dermatology

Author: Zoe Diana Draelos
Publisher: John Wiley & Sons
ISBN: 1444359517
Format: PDF
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Cosmetic Dermatology: Products and Procedures provides a comprehensive compendium of the approaches cosmetic dermatolgists can apply for their patients. It is structured by use within a daily routine so the dermatologist can provide a complete solution for their patients. It reviews skin physiology and the delivery systems of cosmetics, and how they affect the skin. It then looks sequentially at hygiene products for cleaning and mositurizing the skin, adornment products for colouring before looking at antiaging techniques for rejuvenating the skin and their applications as therapeutics. Using short, tightly focused chapters written by recognized experts, Cosmetic Dermatology: Products and Procedures Covers cosmetic applications for hygiene, adornment and antiaging Reviews the full range of cosmetic products and procedures Provides both therapeutic and aesthetic applications Comprises concise, highly focused chapters enabling the reader to gather a thorough understanding References key significant evidence presented for each chapter

Supercritical Fluid Extraction of Nutraceuticals and Bioactive Compounds

Author: Jose L. Martinez
Publisher: CRC Press
ISBN: 9781420006513
Format: PDF, Docs
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Enhanced concern for the quality and safety of food products, increased preference for natural products, and stricter regulations on the residual level of solvents, all contribute to the growing use of supercritical fluid technology as a primary alternative for the extraction, fractionation, and isolation of active ingredients. As a solvent-free process, supercritical fluid technology is a popular answer for the functional foods and nutraceutical sector, one of the fastest growing consumer driven markets. Recent advancements in the technology and increased utilization of the process demand a comprehensive, single-source review of current and future trends in supercritical fluid technology. Compiling contributions from international experts in the field, Supercritical Fluid Extraction of Nutraceuticals and Bioactive Compounds presents the state-of-the-science in the extraction and fractionation of bioactive ingredients by supercritical fluids. Focusing on implemented industrial processes and trends, it reviews the fundamentals of the technology and examines the economics of supercritical fluid extraction systems and processes. Over the course of twelve chapters, the book presents the supercritical fluid extraction processes in edible oils, including fish oils and specialty oils; herbs, such as Latin American plants and those used in Traditional Chinese Medicine; algae; spices; antioxidants and essential oils; as well as the processing of micro and nano-scale materials by supercritical fluid technology. Each chapter covers the major active components in the target material, including chemical, physical, nutritional, and pharmaceutical properties; an analysis of the specific supercritical fluid process used; a comparison of traditional processing methods versus supercritical fluid technology; and a set of conclusions with supporting data and insight.

Photodermatology

Author: Henry W. Lim
Publisher: CRC Press
ISBN: 9780849374968
Format: PDF, Docs
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Covering the entire array of photodermatological topics necessary to stand at the head of this burgeoning discipline, this source contains expertly written chapters that offer recommendations and guidelines from opinion-forming international authorities. Reviewing the entire range of photodermatoses, as well as the management, treatment, identification, and assessment of these conditions, this source includes discussions of narrow and broadband UVB, PUVA, photopheresis, UVA1 therapy, and photodynamic therapy, the principles and medical and cosmetic uses of lasers and similar sources, and appendices on phototesting, photopatch testing, and the development of phototherapy units to stand at the forefront of this burgeoning dermatological subject.

UV Effects in Aquatic Organisms and Ecosystems

Author: E Walter Helbling
Publisher: Royal Society of Chemistry
ISBN: 1847552269
Format: PDF
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This book offers extensive coverage of the most important aspects of UVR effects on all aquatic (not just freshwater and marine) ecosystems, encompassing UV physics, chemistry, biology and ecology. Comprehensive and up-to-date, UV Effects in Aquatic Organisms and Ecosystems aims to bridge the gap between environmental studies of UVR effects and the broader, traditional fields of ecology, oceanography and limnology. Adopting a synthetic approach, the different sections cover: the physical factors controlling UVR intensity in the atmosphere; the penetration and distribution of solar radiation in natural waters; the main photochemical process affecting natural and anthropogenic substances; and direct and indirect effects on organisms (from viruses, bacteria and algae to invertebrate and vertebrate consumers). Researchers and professionals in environmental chemistry, photochemistry, photobiology and cell and molecular biology will value this book, as will those looking at ozone depletion and global change.

Analysis of Cosmetic Products

Author: Amparo Salvador
Publisher: Elsevier
ISBN: 0444635165
Format: PDF, Kindle
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Analysis of Cosmetic Products, Second Edition advises the reader from an analytical chemistry perspective on the choice of suitable analytical methods for production monitoring and quality control of cosmetic products. This book helps professionals working in the cosmetic industry or in research laboratories select appropriate analytical procedures for production, maintain in-market quality control of cosmetic products and plan for the appropriate types of biomedical and environmental testing. This updated and expanded second edition covers fundamental concepts relating to cosmetic products, current global legislation, the latest analytical methods for monitoring and quality control, characterization of nanomaterials and other new active ingredients, and an introduction to green cosmetic chemistry. Provides comprehensive coverage of the specific analytical procedures for different analytes and cosmetic samples Includes information on the biomonitoring of cosmetic ingredients in the human body and the environment Describes the most recent developments in global legislation governing the cosmetics industry Introduces green technologies and the use of nanomaterials in the development and analysis of cosmetic ingredients