Results 31 to 40 of about 4,217,021 (297)

Secondary organic aerosol from chlorine-initiated oxidation of isoprene [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
Recent studies have found concentrations of reactive chlorine species to be higher than expected, suggesting that atmospheric chlorine chemistry is more extensive than previously thought.
D. S. Wang, L. H. Ruiz
doaj   +1 more source

Effectiveness of the Natural Antioxidant 2,4,4′-Trihydroxychalcone on the Oxidation of Sunflower Oil during Storage

open access: yesMolecules, 2021
This study aimed to investigate the effectiveness of 2,4,4′-trihydroxychalcone as a natural antioxidant on the oxidation of sunflower oil during an 88-day storage period and to compare its strength with the synthetic antioxidant butylated hydroxytoluene (
Hadeil Alsufiani, Wafaa Ashour
doaj   +1 more source

Effect of Ca Additions on Ignition Temperature and Multi-Stage Oxidation Behavior of AZ80

open access: yesMetals, 2018
AZ80, AZX801, and AZX802 alloys were prepared to investigate the ignition temperature and multi-stage oxidation behavior in air. Besides, the microstructures of alloys before and after oxidation were compared.
Chunlong Cheng   +5 more
doaj   +1 more source

A new oxidation flow reactor for measuring secondary aerosol formation of rapidly changing emission sources [PDF]

open access: yesAtmospheric Measurement Techniques, 2017
Oxidation flow reactors (OFRs) or environmental chambers can be used to estimate secondary aerosol formation potential of different emission sources. Emissions from anthropogenic sources, such as vehicles, often vary on short timescales.
P. Simonen   +8 more
doaj   +1 more source

Formation of Secondary and Tertiary Volatile Compounds Resulting from the Lipid Oxidation of Rapeseed Oil

open access: yesFoods, 2021
The lipid oxidation of fats and oils leads to volatile organic compounds, having a decisive influence on the sensory quality of foods. To understand formation and degradation pathways and to evaluate the suitability of lipid-derived aldehydes as marker ...
Sandra Grebenteuch   +3 more
doaj   +1 more source

Kinetic modelling of phenols consumption during polyethylene thermal oxidation [PDF]

open access: yes, 2013
Irganox 1010 stabilized PE was monitored by carbonyl build-up and DSC under oxygen. A scheme for PE stabilization by phenols was implemented and its kinetic parameters were calculated from experimental results.
RICHAUD, Emmanuel
core   +1 more source

Oxidation levels of North American over-the-counter n-3 (omega-3) supplements and the influence of supplement formulation and delivery form on evaluating oxidative safety

open access: yesJournal of Nutritional Science, 2015
The aim of the present study was to evaluate the oxidation status of North American n-3 (omega-3) PUFA nutritional supplements commercially available in Canada and evaluate the influence of product formulation and delivery form on oxidative safety.
Stefan A. Jackowski   +6 more
doaj   +1 more source

Secondary aerosol formation from photochemical aging of aircraft exhaust in a smog chamber [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
Field experiments were performed to investigate the effects of photo-oxidation on fine particle emissions from an in-use CFM56-2B gas turbine engine mounted on a KC-135 Stratotanker airframe.
M. A. Miracolo   +8 more
doaj   +1 more source

Impact of Frozen Storage on Sensory, Physicochemical, and Volatile Compounds Parameters of Different Extra Virgin Olive Oils

open access: yesFoods
Storage is important for virgin olive oil, a product obtained only during the harvest period, which requires a year-round storage until its best-before date. Low temperatures slow undesirable reactions, though this method is not widely applied.
Enrique J. Díaz-Montaña   +4 more
doaj   +1 more source

OXIDATION OF BENZYLIC SECONDARY ALCOHOL WITH PYRIDINIUM CHLOROCHROMATE-ALUMINA (PCC-Al2O3)

open access: yesIndonesian Journal of Chemistry, 2010
In these studies, Pyridinium chlorochromate-Alumina was used for oxidation of secondary alcohols (safryl alcohol and methyleugenyl alcohol) to ketone.  The oxidation of safryl alcohol with PCC-Al2O3 followed by purification by potassium bisulfite yields ...
Hanoch J. Sohilait
doaj   +1 more source

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