Far‐UVC devices are being commercially sold as “safe for humans” for the inactivation of SARS‐CoV‐2, without supporting human safety data. We felt there was a need for rapid proof‐of‐concept human self‐exposure, to inform future controlled research and promote informed discussion. A Fitzpatrick Skin Type II individual exposed their inner forearms to large radiant exposures from a filtered Krypton‐Chloride

Far‐UVC radiation is a promising technology that is potentially both effective at killing airborne microbes such as coronaviruses and influenza, and being minimally hazardous to the skin and eyes. Our previous studies on health risks from far‐UVC have employed a krypton‐chloride (KrCl) excimer lamp, emitting principally at 222 nm, supplemented with an optical filter to remove longer wavelength emissions

To explore the photosynthetic response of short‐term high‐temperature treatments to the leaves of different grape varieties (Shenyue and Shenfeng), we performed 45°C treatments on annual potted grapes in an artificial climate chamber to simulate the summer high‐temperature period. We measured the rapid A‐Ci response curve, 1,5‐ribulose bisphosphate carboxylase/oxygenase (Rubisco) activity, and chlorophyll

Four new terbium(III) ternary complexes, [Tb(fod)3(indazole)] (1), [Tb(fod)3(tptz)] (2), [Tb(fod)3(impy)] (3) and [Tb(fod)3(tppo)2] (4) with 6,6,7,7,8,8,8‐heptafluoro‐2,2‐dimethyl‐3,5‐octanedione, (Hfod) and N and O donors are synthesized and structurally characterized. The photoluminescence of the complexes are studied in solid, chloroform solution and thin PMMA hybrid films (PMMA is a poly(methyl

Reliable indoor air disinfection could make clinical and other necessary indoor spaces safer during epidemics with airborne transmission like COVID‐19. Low‐dose upper‐room germicidal ultraviolet‐C (GUV 254 nm) is well‐suited for this because of the SARS‐CoV‐2 virus' sensitivity to GUV inactivation and GUV's relatively easy adaptability to many types of indoor spaces without respect to outside weather

Protein crosslinking photosensitized by rose Bengal (RB2‐) has multiple medical applications and understanding the photosensitization mechanism can improve treatment effectiveness. To this end, we investigated the photochemical efficiencies of monomeric RB2‐ (RBM2‐) and dimeric RB2‐ (RBD2‐) and the optimal pH for anaerobic RB2‐ photosensitization in cornea. Absorption spectra and dynamic light scattering

This perspective article highlights the challenges in the theoretical description of photoreceptor proteins using multiscale modelling, as discussed at the CECAM workshop in Tel Aviv, Israel. The participants have identified grand challenges and discussed the development of new tools to address them. Recent progress in understanding representative proteins such as green‐fluorescent protein, photoactive

Photobiomodulation (PBM) is considered as a noninvasive procedure with the potential of inducing favorable changes in cellular behavior. In this study, we aimed to evaluate the effects of near‐infrared low‐intensity laser PBM on proliferation, viability and osteogenic differentiation of stem cells isolated from human periodontal ligament. A 940‐nm diode laser with an energy density of 4 J cm−2 in a

Cutaneous photodamage is incited via exposure of ultraviolet‐B (UV‐B) radiation, which is characterized by the manifestation of oxidative stress, inflammation, collagen degradation and apoptosis which translate to external aging signs such as wrinkle formation, leathery skin appearance etc. Meanwhile, it increases cellular susceptibility to photo‐carcinogenesis. Several studies have accumulated evidence

Triplet carbonyls generated by chemiexcitation are involved in typical photobiochemical processes in the absence of light. Due to their biradical nature, ultraweak light emission and long lifetime, electronically excited triplet species display typical radical reactions such as isomerization, fragmentation, cycloaddition, and hydrogen abstraction. In this paper, we report chemical reactions in a set