Fortschritte der praktischen Dermatologie und Venerologie

Author: Gerd Plewig
Publisher: Springer-Verlag
ISBN: 3642556612
Format: PDF, Docs
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Die Fortbildungswoche für praktische Dermatologie und Venerologie ist zur zentralen Fortbildungsveranstaltung der deutschsprachigen Dermatologen geworden. Alle zwei Jahre wird hier ein für die Praxis aufbereiteter, aktueller Überblick über den Wissensstand und die Entwicklung des gesamten Faches gegeben. In diesem Band finden sich die Themen der 18. Fortbildungswoche für praktische Dermatologie und Venerologie 2002 als sorgfältig bearbeitete und mit aktuellen, weiterführenden Literaturhinweisen versehene Übersichten. Weiterhin sind auch in diesem Band die Kasuistiken der "Diaklinik" enthalten.

Sun Protection in Man

Author: P.U. Giacomoni
Publisher: Elsevier
ISBN: 9780080518169
Format: PDF, Kindle
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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, ePub, Docs
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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, Kindle
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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.

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, Kindle
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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.

Berichte zur Lebensmittelsicherheit 2005

Author: Peter Brandt
Publisher: Springer-Verlag
ISBN: 376438347X
Format: PDF
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Lebensmittelmonitoring - das von Bund und Ländern durchgeführte Untersuchungsprogramm - ergänzt die amtliche Lebensmittelüberwachung der Bundesländer. Lebensmittelüberwachung kontrolliert die Einhaltung lebensmittelrechtlicher Vorschriften v.a. durch verdachts- und risikoorientierte Untersuchungen. Das Lebensmittelmonitoring hingegen misst und bewertet - wiederholt und repräsentativ - den Gehalt unerwünschter Stoffe (z.B. Pflanzenschutzmittel, Schwermetalle) in und auf Lebensmitteln. Es erkennt Risiken für Verbraucher und stellt sie ab. 2005 wurden 5159 Proben von 50 Lebensmitteln bzw. -gruppen in- und ausländischer Herkunft untersucht.