Recreational tanning, particularly as promoted by commercial salons with 'sunbeds' or booths, has generated increasing attention from the regulatory and the biomedical communities. Several agencies have weighed in with opinions on recommended modifications in guidelines, training procedures, regulatory controls, and consumer awareness. Currently there is little uniformity in the guidance provided by trade groups, in recommendations supplied by health agencies and medical associations, or in regulatory approaches taken or proposed by the many countries involved. In an effort to provide a clearer focus for its concerns in this area, the EU Directorate General Health and Consumer Affairs formulated six questions on ultraviolet (UV) tanning, all of a technical or biomedical nature. The questions were stimulated in part by the fact that the European Commission no longer regards the European standard EN 60335-2-27:1997 ('Particular requirements for appliances for skin exposure to ultraviolet and infrared radiation') as giving presumption of conformity to the Low Voltage Directive 73/23/EEC. (The latter Directive governs marketing of electrical devices in EC countries.) Initially, the questions were posed to an EU Scientific Committee. Subsequently, industry representatives and the European Commission jointly requested that the scientific community provide answers to the questions. We received the questions with a request for our technical responses and opinions. Our response was in the form of the following essay, submitted earlier this year to the European Commission. We offer it here in the hope of stimulating constructive discussion and comment.
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http://dx.doi.org/10.1111/j.1600-0781.2005.00177.x | DOI Listing |
Sci Rep
December 2024
Departamento de Física, Universidad Carlos III de Madrid, Avda. de la Universidad 30, 28911, Leganés, Spain.
Considering a universal deep neural network organized as a series of nested qubit rotations, accomplished by adjustable data re-uploads we analyze its expressivity. This ability to approximate continuous functions in regression tasks is quantified making use of a partial Fourier decomposition of the generated output and systematically benchmarked with the aid of a teacher-student scheme. While the maximal expressive power increases with the depth of the network and the number of qubits, it is fundamentally bounded by the data encoding mechanism.
View Article and Find Full Text PDFJ Biomed Mater Res B Appl Biomater
January 2025
Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Szczecin, Poland.
Fabricating complex hierarchical structures mimicking natural vessels and arteries is pivotal for addressing problems of cardiovascular diseases. Various fabrication strategies have been explored to achieve this goal, each contributing unique advantages and challenges to the development of functional vascular grafts. In this study, a three-layered tubular structure resembling vascular grafts was fabricated using biocompatible and biodegradable copolymers of poly(butylene succinate) (PBS) using advanced manufacturing techniques.
View Article and Find Full Text PDFInt J Life Cycle Assess
March 2024
Center for Environmental Solutions and Emergency Response, US Environmental Protection Agency, Cincinnati, OH, USA.
Purpose: Limited availability of life cycle assessment (LCA) data poses a significant challenge to its mainstream adoption, rendering it a central issue within the LCA community. The Global LCA Data Access (GLAD) network aims to increase the accessibility and interoperability of LCA data and offers benefits for different use cases. GLAD is an intergovernmental collaboration involving different stakeholders organized into working groups.
View Article and Find Full Text PDFBMC Prim Care
December 2024
Charité - Universitätsmedizin Berlin, Institute of General Practice and Family Medicine, Charitéplatz 1, Berlin, 10117, Germany.
Background: Health-related social problems are common in primary care. Different care models integrating medical and non-medical services in primary care have been tested and established nationally and internationally, such as social prescribing, social work in primary care, health kiosks and integrated primary care centres. The aim of our study was to explore the perspective of general practitioners (GPs) working in Germany on these four care models regarding their meaningfulness and if they would like to use them.
View Article and Find Full Text PDFJTO Clin Res Rep
December 2024
Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Introduction: Programmed death-ligand 1 (PD-L1) is the main predictive biomarker used to identify patients with NSCLC who are eligible for treatment with immune checkpoint inhibitors. Despite its utility, the predictive capacity of PD-L1 is limited, necessitating the exploration of supplementary predictive biomarkers. In this report, we describe the prognostic value of / mutation status for overall survival (OS) in patients with NSCLC treated with first-line immunotherapy or combined chemoimmunotherapy.
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