نتایج جستجو برای: sulfate radicals

تعداد نتایج: 85826  

2017
Irena Labazan Steven Hoekstra Jochen Küpper Gerard Meijer

We report on the production of a pulsed molecular beam of metastable NH (a 1∆) radicals and present first results on the Stark deceleration of the NH (a 1∆, J = 2,MΩ = −4) radicals from 550 m/s to 330 m/s. The decelerated molecules are excited on the spin-forbidden A 3Π ← a 1∆ transition, and detected via their subsequent spontaneous fluorescence to the X 3Σ−, v” = 0 ground-state. These experim...

Journal: :Journal of environmental chemical engineering 2021

The sulfate radicals (SO4•−)-based advanced oxidation process is an efficient way to degrade stubborn pollutants. However, the degradation products of 2,4-dinitrotoluene and effects different natural water matrices on by persulfate/Fe2+ are largely unknown. In this study, kinetics were investigated in matrices. can be divided into rapid-slow reaction stages, which was suitably described pseudo-...

Journal: :Journal of food bioactives 2022

Edible fungi and lactic acid bacteria (LAB) are emerging as reservoirs of diverse bio-functional products. This study investigated antioxidant antimicrobial activities a mushroom; Calocybe indica protein (CIP) cell-free supernatant (CFS) Lactococcus lactis, Lactobacillus fermentum, brevis isolated from fermented cereal food-Kati against free radicals microorganisms associated with fruits spoila...

Journal: :avicenna journal of medical biotechnology 0

musa sapientum (m.sapientum) commonly known as ‘banana’ is widely used in bangladeshi folk medicine for the treatment of various ailments including diarrhea. hence, the present study was designed to investigate antidiarrheal, antioxidant and antibacterial potential of the methanolic extract of m.sapientum seed (mmss). the extract was studied for antidiarrheal property using castor oil and magne...

Journal: :مجله دانشگاه علوم پزشکی شهید صدوقی یزد 0
علی اکبر ملکی راد aa malekiral . ak_malekirad@ yahoo.com منصور بیرامی m beyrami کبری راهزانی k rahzani محمدعلی شریعت زاده ma shariatzadeh ابوالفضل عیسی آبادی بزچلویی a eisabadi bozchelouei

introduction: free radicals are molecules or atoms with single electron that results in reactions thus causing severe damages to the body’s macromolecules. by preventing the formation of free radicals, repairing damages caused by radical’s activities, increasing the excretion of the damaged molecules and minimizing the cellular mutation, the antioxidant defense system contrasts the damages caus...

Journal: :Molecules 2017
Yi Yang Joseph J Pignatello

Halide ions are ubiquitous in natural waters and wastewaters. Halogens play an important and complex role in environmental photochemical processes and in reactions taking place during photochemical water treatment. While inert to solar wavelengths, halides can be converted into radical and non-radical reactive halogen species (RHS) by sensitized photolysis and by reactions with secondary reacti...

Almashhedy LA Alsalman ARS Hadwan MH,

Background: The generation of reactive oxygen species (ROS) in the male reproductive tract has become an actual concern because of their probable noxious effects, at high levels, on physical properties of sperm quality. ROS are extremely reactive oxidizing agents, which a member of the class of free radicals. It was found that uric acid can act as an essential water soluble antioxidant and ther...

Let $R$ be a commutative ring with identity and let $M$ be an $R$-module. In this paper, we will introduce the secondary radical of a submodule $N$ of $M$ as the sum of all secondary submodules of $M$ contained in $N$, denoted by $sec^*(N)$, and explore the related properties. We will show that this class of modules contains the family of second radicals properly and can be regarded as a dual o...

2010
Kalina Ranguelova Marcelo G. Bonini Ronald P. Mason

BACKGROUND Sulfur dioxide, formed during the combustion of fossil fuels, is a major air pollutant near large cities. Its two ionized forms in aqueous solution, sulfite and (bi)sulfite, are widely used as preservatives and antioxidants to prevent food and beverage spoilage. (Bi)sulfite can be oxidized by peroxidases to form the very reactive sulfur trioxide anion radical (*SO(3)-). This free rad...

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