Results 41 to 50 of about 3,605,857 (342)

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

open access: yesAdvanced Engineering Materials, EarlyView.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong   +11 more
wiley   +1 more source

Comparative Evaluation of Ultraviolet and Visible Light Transmittance through Prescriptive Ophthalmic Minus Lenses

open access: yesNovelty in Biomedicine, 2014
Background: Wearing spectacles is the most common approach in correcting the refractive errors worldwide. Due to harmful effects of overexposure to solar ultraviolet radiations, the usage of multi-layer coatings in ophthalmic lenses has recently been ...
Mohammadreza Nazari   +3 more
doaj  

Comparative assessment of the nature of the impact of ultraviolet radiation on watermelon seeds in time mode

open access: yesОвощи России, 2019
Relevance. One of the main components of the spectrum of sunlight is ultraviolet rays – invisible to the human eye short-wave radiation. The influence of these rays on plant life was considered insignificant until recently, but recent studies have shown ...
A. V. Gulin, V. I. Donskaya
doaj   +1 more source

Fluorinated Graphene‐Coated N95 Respirators for Enhanced Protection against Viral Accumulation and Transmission

open access: yesAdvanced Engineering Materials, EarlyView.
We develop a one‐step spray coating approach to coat the fluorinated graphene (FG) nanosheet onto the N95 respirators. The spray‐coated superhydrophobic N95 respirators can effectively repel respiratory droplets off instantaneously and prevent SARS‐CoV‐2 virus accumulation on the surface.
Fengjie He   +4 more
wiley   +1 more source

Shape Memory Polymer‐Based Hook‐and‐Loop Fastener for Robust Bonding and on‐Demand Easy Separation

open access: yesAdvanced Engineering Materials, EarlyView.
A 3D shape memory polymer‐based hook‐and‐loop fastener, fabricated using projection microstereolithography and molding, offers tunable bonding strength through temperature control. When heated from 25 to 70 °C, the fastener softens and deforms easily, reducing bonding strength by 20‐fold for on‐demand easy separation.
Chen Yang   +5 more
wiley   +1 more source

Total ozone column above the territory of Serbia and Montenegro [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2006
Introduction: Atmospheric ozone attenuates ultraviolet radiation reaching the Earth’s surface. Since UV-B radiation is considered the principal factor of causing the skin cancers, cataracts and some immunological disorders, determination of total ozone ...
Letić Milorad
doaj   +1 more source

Ultraviolet rays in surgery

open access: yesKazan medical journal, 1926
Masmonteil (Presse med., 1925, No. 100) divides the cases where these rays are used into 4 groups.
openaire   +2 more sources

Performance Comparison of Surface Sensitizers for Diode Laser Powder Bed Fusion of Polyamide 12

open access: yesAdvanced Engineering Materials, EarlyView.
Laser‐generated nanoparticles transform standard PA12 powders into high‐performance, dye‐free feedstocks for diode laser 3D printing. Despite identical absorbance at 808 nm, CuS, LaB6, and CB coatings reveal striking differences in fusion and strength—unlocking new design space for recyclable, industrial‐grade polymers.
Michael Willeke   +9 more
wiley   +1 more source

STUDIES ON THE ULTRAVIOLET IRRADIATION OF PROVITAMIN D AND ITS RELATED COMPOUNDS III. EFFECT OF WAVELENGTH ON THE FOR-MATION OF POTENTIAL VITAMIN D2 IN THE IRRADIATION OF ERGOSTEROL BY MONO-CHROMATIC ULTRAVIOLET RAYS

open access: yes, 1973
In the irradiation of ergosterol, the effect of wavelength on the forma-tion of potential vitamin D2 (the sum of pre-D2 and vitamin D2) was investigated. Monochromatic UV rays obtained from a spectroirradiator were used for the irradiations and the yield
Tadashi Kobayashi, M. Yasumura
semanticscholar   +1 more source

Ultraviolet radiation and melanogenesis [PDF]

open access: yesArchive of Oncology, 2004
Light radiation is a part of the electromagnetic radiation, and it consists of the ultraviolet (UV) radiation, visible light, and infrared radiation.
Stanojević Milenko R.   +3 more
doaj   +1 more source

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