In order to ground the credibility of the sunbeds' ultraviolet radiation compliance assessment with the 0.3W/m(2) erythema effective irradiance limit, it is highly important to use reliable measuring equipment and to justify reasonably the measurement's result. Recently, the first surveillance action of the artificial tanning sector in Greece has been finalised. The action consisted of in situ erythema effective irradiance measurements from sunbeds at commercial premises offering artificial tanning services at various cities throughout Greece. Four different broadband erythemal weighted radiometers were used in order to compare them during in situ sunbeds' radiation measurements, at commercial premises, and to choose the most suitable one for compliance inspections. Furthermore a rationale has been introduced in order to compare the measurement's result with the limit, and decide about compliance or not, taking into account the measurement's expanded uncertainty. According to this approach, compliance, probable compliance or non-compliance is verified when the measurement's result taking into account the measurement's expanded uncertainty does not, probably or does exceed the 0.3W/m(2) limit, respectively. Ultraviolet radiation exceeded the 0.3W/m(2) erythema effective irradiance limit in 63.5% (33 out of 52) of the sunbeds and probably exceeded the limit in 11.5% (6 out of 52) of the sunbeds, according to the measurements performed with the radiometer which was chosen as the most suitable one and the proposed rationale for compliance justification.
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http://dx.doi.org/10.1016/j.ejmp.2016.08.022 | DOI Listing |
Mater Horiz
January 2025
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
Polymer photo-oxidation aging is a significant issue in plastics engineering, leading to reduced performance, shorter lifespan, and additional pollution. Anti-aging agents, including antioxidants and ultraviolet (UV)-shielding agents, are used to ameliorate the above problems. However, multi-component agents involve complex synthesis, mixed processing, and environmental concerns.
View Article and Find Full Text PDFWe theoretically study high-order harmonic generation (HHG) involving an extreme ultraviolet (XUV) pulse and an intense infrared driving field, where the electron is ionized by absorbing a single XUV photon. Using a developed classical-trajectory model that includes Coulomb effects and the improved initial conditions, it is demonstrated that the resulting harmonic emission times match well with those obtained by applying the Gabor transform to data from numerical solutions of time-dependent Schrödinger equations for helium and hydrogen atoms. This confirms a classical HHG scheme under single-photon ionization: The electron, ionized by absorbing one XUV photon, oscillates in the infrared field and may recollide with the parent ion, emitting high-frequency radiation.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
January 2025
Programa de Pós-Graduação Em Saneamento, Meio Ambiente E Recursos Hídricos, Departamento de Engenharia Sanitária E Ambiental, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil.
Wastewater treatment plants (WWTPs) currently face major challenges toward the removal of microcontaminants and/or microbial matrices and consequently play an important role in the potential dissemination of biological resistance in freshwater. The ultraviolet (UV) system is a tertiary treatment strategy increasingly applied worldwide, although many studies have shown that disinfected effluent can still contain antibiotic-resistant bacteria and resistance genes. Therefore, to better understand the effects of UV radiation doses on the removal of all resistance elements (antibiotics, antibiotic-resistant bacteria, and antibiotic resistance genes), the present study was designed using a pilot-scale photoreactor.
View Article and Find Full Text PDFArch Dermatol Res
January 2025
Department of Dermatology, School of Medicine, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216-4505, USA.
People who spend time at the beach at increased risk for ultraviolet light (UV) exposure. This review assessed skin cancer-related knowledge, attitudes, beliefs, and prevention practices among beachgoers and sunbathers at the beach. Relevant articles were search in the following electronic databases: PubMed (Medline), Cumulative Index to Nursing and Allied Health (CINAHL), ERIC, and PsycINFO.
View Article and Find Full Text PDFPLoS One
January 2025
Manchester Cancer Research Centre, Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom.
Non-covalent protein-protein interactions are one of the most fundamental building blocks in cellular signalling pathways. Despite this, they have been historically hard to identify using conventional methods due to their often weak and transient nature. Using genetic code expansion and incorporation of commercially available unnatural amino acids, we have developed a highly accessible method whereby interactions between biotinylated ubiquitin-like protein (UBL) probes and their binding partners can be stabilised using ultraviolet (UV) light-induced crosslinks.
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