نتایج جستجو برای: uv c light

تعداد نتایج: 1465078  

Journal: :Bulletin of Electrical Engineering and Informatics 2023

The traditional solid-state technique was used to create LaBSiO5 phosphors doped with Ce3+ and Tb3+ at 1,100 °C. These phosphors' phase purity luminous characteristics are looked at. Under ultraviolet (UV) light stimulation, LaBSiO5: emit bright green light, whereas samples incorporated blue-violet light. With UV ray as well illumination. 5d-4f shift for is responsible the radiation, while 5D4→...

2008
K. MAHDAVIAN M. GHORBANLI Kh. M. KALANTARI

Plants have evolved mechanisms to avoid and repair UV radiation damage; it is not surprising that photomorphogenic responses to UV-B and UV-C are often assumed to be adaptations to harmful radiation. Free radicals generated by UV are likely to be involved in the induction of antioxidant defence system. In this study plants were grown for 5 weeks in controlled conditions. Plants were grown in ve...

Journal: :Applied Physics Letters 2022

Ultraviolet band C (UV-C) micro light-emitting diodes (micro-LEDs) provide a high energy light emission of 200–280 nm, which are brilliantly utilized in optogenetics, communications, and fluorescence. However, the limited device efficiency notably restricts grand potential application field. In this work, three types 20 × ?m 2 UV-C micro-LEDs with peak wavelength 269 nm fabricated by different ...

, ,

Yttrium Aluminum Garnet (Y3Al5O12) is a transparent ceramic with a wide range of applications such as high mechanical strength windows, high power laser sources and radiation detectors. The most important challenge in making these ceramics is the problem of low light transmittance, especially in the visible area in the range of 400 to 700 nm, which is greatly affected and reduced by various fac...

Journal: :Catalysts 2023

Memantine is a pharmaceutical used to treat memory loss, one of the main symptoms dementia and Alzheimer’s disease. The use memantine expected continue grow due increasing proportion elderly population worldwide. aim this work was conduct comprehensive study on behaviour in environment possibilities its removal from wastewater. Abiotic elimination processes (hydrolysis, photolysis sorption) wer...

Journal: :International endodontic journal 2007
Z Metzger M Dotan H Better I Abramovitz

AIM To explore the sensitivity of bacteria commonly found in root canals to 254 nm ultraviolet (UV) light, either as individual cells or as participants of a bacterial multilayer. METHODOLOGY The sensitivity of oral bacteria, as individual cells, to UV light was tested by subjecting plates streaked with bacteria to 254 nm UV, at a fluence of 1-20 mJ cm(-2). An experimental model was designed ...

Journal: :acta medica iranica 0
m. k. sharifi-yazdi h. darghahi

the lethality of pulsed ultra-violet (uv) rich light for the inactivation of pathogenic bacteria has been investigated. a low pressure xenon filled flash lamps that produced uv intensities have been used. the pulsed operation of the system enable the release of electrical energy stored in the capacitor into the flash lamp within a short time and produces the high current and high peak power req...

Journal: :Al Kimiya: Jurnal Ilmu Kimia dan Terapan 2023

This study focuses on the degradation of phenol in aqueous solutions using photolysis and sonolysis methods. It investigates impact catalyst mass, types light (UV-A, UV-C, visible light), (RHAC, TiO2, TiO2/RHAC), processing time degradation. The are analyzed before after Spectrophotometer UV-Vis HPLC. research aims to understand factors influencing provide a basis for further studies enhance ef...

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