Results 11 to 20 of about 7,901 (306)

Effects of UV-B and UV-C radiation on antioxidative enzymes activity of Melissa officinalis and influences of salicylic acid in UV-stress ameliorations [PDF]

open access: yesZīst/shināsī-i Giyāhī-i Īrān, 2014
The effects of decreased ozone and increased UV radiation have been studied by many researchers. The aim of this study was to investigate the effects of UV-B and UV-C radiations on Melissa officinalis L.
Latifeh Pourakbar, Mehdi Abedzadeh
doaj   +1 more source

DNA Damage and Repair in Plants under Ultraviolet and Ionizing Radiations [PDF]

open access: yesThe Scientific World Journal, 2015
Being sessile, plants are continuously exposed to DNA-damaging agents present in the environment such as ultraviolet (UV) and ionizing radiations (IR). Sunlight acts as an energy source for photosynthetic plants; hence, avoidance of UV radiations (namely,
Sarvajeet S. Gill   +4 more
doaj   +2 more sources

High energy and average power solid-state UV laser for industrial applications [PDF]

open access: yesEPJ Web of Conferences
High energy and average power solid-state UV laser involves several challenges to manage degradation due to UV radiations. Recent results achieved in this direction are presented.
Bruel N.   +7 more
doaj   +2 more sources

Skin color-specific and spectrally-selective naked-eye dosimetry of UVA, B and C radiations [PDF]

open access: yesNature Communications, 2018
Current ultraviolet (UV) sensors cannot differentiate between UVA, B and C, each of which has a remarkably different impact on human health. Here the authors show spectrally-selective colorimetric monitoring of ultraviolet radiations by developing a ...
Wenyue Zou   +9 more
doaj   +2 more sources

Efficient optimization and mineralization of UV absorbers: A comparative investigation with Fenton and UV/H2O2

open access: yesOpen Chemistry, 2018
UV absorbers developed for finishing of textile materials play a significant role in protection against UV radiations but their discharge in wastewater during processing and laundry action also retain serious concern to living species due to their ...
Sahar Anum   +4 more
doaj   +2 more sources

The Combinations of White, Blue, and UV-A Light Provided by Supplementary Light-Emitting Diodes Promoted the Quality of Greenhouse-Grown Cucumber Seedlings

open access: yesAgriculture, 2022
Insufficient solar light in winter inside the greenhouse may lead to a lower quality of vegetable seedlings, and supplemental light is an effective technique to solve this problem.
Zhengnan Yan   +5 more
doaj   +1 more source

ZnO Nanoparticles for Photocatalytic Application in Alkali-Activated Materials

open access: yesMolecules, 2020
This paper reports an Alkali-Activated Materials (AAM) using two different precursors, metakaolin and a metallurgical slag with photocatalytic zinc oxide nanoparticles, as novel photocatalytic composites.
Hector R. Guzmán-Carrillo   +3 more
doaj   +1 more source

Prochlorococcus and Synechococcus have evolved different adaptive mechanisms to cope with light and UV stress [PDF]

open access: yes, 2012
Prochlorococcus and Synechococcus, which numerically dominate vast oceanic areas, are the two most abundant oxygenic phototrophs on Earth. Although they require solar energy for photosynthesis, excess light and associated high UV radiations can induce ...
Christophe eSix   +32 more
core   +1 more source

Intraspecific variation in photosynthetic efficiency in soybean (Glycine max L.) varieties towards solar ultraviolet radiations

open access: yesPhotosynthetica, 2023
In the current study, we used four soybean varieties PK-1029, PK-472, NRC-7, and Hardee to examine the effect of exclusion of solar UV radiation on photosynthetic efficiency and to test possible variety-dependent sensitivity to ambient UV (280-400 nm ...
S.S. BARONIYA   +5 more
doaj   +1 more source

Specialized Metabolites of the Lichen Vulpicida pinastri Act as Photoprotective Agents

open access: yesMolecules, 2017
The extreme resiliency of lichens to UV radiations makes them an interesting model to find new photoprotective agents acting as UV-blockers and antioxidant.
Béatrice Legouin   +7 more
doaj   +1 more source

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