A 10-day course of ultraviolet radiation (intensity: 1/8-2 biodoses daily) did not favour accumulation of cesium-137 in the body but produced some effect on the accumulation of strontium-90. In the real radiation condition in the city of Kiev the daily prophylactic 1/8 biodose may be considered as absolutely safe.
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Sci Adv
January 2025
School of Chemical Engineering, Pusan National University, Busan, Republic of Korea.
The development of fibrous actuators with diverse actuation modes is expected to accelerate progress in active textiles, robotics, wearable electronics, and haptics. Despite the advances in responsive polymer-based actuating fibers, the available actuation modes are limited by the exclusive reliance of current technologies on thermotropic contraction along the fiber axis. To address this gap, the present study describes a reversible and spontaneous thermotropic elongation (~30%) in liquid crystal elastomer fibers produced via ultraviolet-assisted melt spinning.
View Article and Find Full Text PDFPrev Med Rep
November 2024
Higher Institute of Public Health, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon.
Background: Exposure to Ultraviolet radiation (UVR) is a major risk factor for skin cancer. Data about UVR risk knowledge and exposure behaviors in the Lebanese population are scarce.
Aim: To evaluate the association between UVR risks knowledge, attitudes, and behaviors among Lebanese university students in the aim of promoting primary prevention of skin cancer.
Case Rep Dermatol
January 2025
Department of Dermatology, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, PR China.
Introduction: Basal cell carcinoma (BCC) is the most common type of skin malignancy, accounting for approximately 80% of all non-melanoma skin cancers (NMSCs). Ultraviolet (UV) exposure is a significant risk factor for BCC development, which typically occurs in sun-exposed areas. BCC arising in non-sun-exposed regions, such as the nipple-areola complex (NAC), is exceedingly rare, with fewer than 100 cases reported globally.
View Article and Find Full Text PDFJ Eur Acad Dermatol Venereol
January 2025
Section of Dermatology and Venereology, Department of Medicine, University of Verona, Verona, Italy.
Background: The relationship between particulate matter (PM) exposure and melanoma risk remains largely unexplored. This study aims to investigate the association between PM10 and PM2.5 long-term exposure and melanoma risk.
View Article and Find Full Text PDFPhotosynth Res
January 2025
Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan.
Pheophytin-a derivatives possessing plastoquinone and phylloquinone analogs in the peripheral 3-substituent were prepared by Friedel-Crafts reactions of a 3-hydroxymethyl-chlorin as one of the chlorophyll-a derivatives with benzo- and naphthohydroquinones, respectively, and successive oxidation of the 1,4-dihydroxy-aryl groups in the resulting dehydration products. The 3-quinonylmethyl-chlorins exhibited ultraviolet-visible absorption and circular dichroism spectra in acetonitrile, which were composed of those of the starting 3-hydroxymethyl-chlorin and the corresponding methylated benzo- and naphthoquinones. No intramolecular interaction between the chlorin and quinone π-systems was observed in the solution owing to the methylene spacer.
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