Results 21 to 30 of about 230,455 (301)

Application of Near-Infrared Spectroscopy to Measure the Water Content in Liquid Dielectrics

open access: yesEnergies, 2022
The article discusses the methods used to measure the water content in liquid dielectrics. The pros and cons of currently used methods are presented. The main aim of the research was to check the possibility of using near-infrared spectroscopy to measure
Piotr Przybylek
doaj   +1 more source

Second-generation probes for biosynthetic intermediate capture : towards a comprehensive profiling of polyketide assembly [PDF]

open access: yes, 2016
Malonyl carba(dethia) N-decanoyl cysteamine methyl esters and novel acetoxymethyl esters were utilised as second-generation probes for polyketide intermediate capture.
Gazzola, Silvia   +5 more
core   +1 more source

Determination and occurrence of natural and synthetic glucocorticoids in surface waters

open access: yesEnvironment International, 2020
Glucocorticoids (GCs) have been increasingly reported to have adverse effects on aquatic organisms, but the lack of comprehensive analytical methods for a broad number of GCs has limited the effective management of pollution by these molecules in surface
Xiaoyan Shen, Hong Chang, Yu Sun, Yi Wan
doaj   +1 more source

Vitamin A Transport Mechanism of the Multitransmembrane Cell-Surface Receptor STRA6. [PDF]

open access: yes, 2015
Vitamin A has biological functions as diverse as sensing light for vision, regulating stem cell differentiation, maintaining epithelial integrity, promoting immune competency, regulating learning and memory, and acting as a key developmental morphogen ...
Kassai, Miki   +4 more
core   +2 more sources

Esters of Glucose-2-Phosphate: Occurrence and Chemistry

open access: yesMolecules, 2020
Phosphodiesters of glucose-2-phosphate (G2P) are found only in few natural compounds such as agrocinopine D and agrocin 84. Agrocinopine D is a G2P phosphodiester produced by plants infected by Agrobacterium fabrum C58 and recognized by the bacterial ...
Qiang Zhang   +4 more
doaj   +1 more source

Possibility of [1,5] sigmatropic shifts in bicyclo[4.2.0]octa-2,4-dienes [PDF]

open access: yes, 2015
The thermal equilibration of the methyl esters of endiandric acids D and E was subject to a computational study. An electrocyclic pathway via an electrocyclic ring opening followed by a ring flip and a subsequent electrocyclization proposed by Nicolaou ...
Catak, Saron   +7 more
core   +2 more sources

Chromatography of unusual lipids on thin layers of magnesium oxide

open access: yesJournal of Lipid Research, 1971
The chromatographic behavior of some minor components of natural lipids was studied using layers of magnesium oxide and of commercial adsorbents containing magnesium oxide.
H.P. Kaufmann   +2 more
doaj   +1 more source

Synthesis and Evaluation of Saccharide-Based Aliphatic and Aromatic Esters as Antimicrobial and Antibiofilm Agents [PDF]

open access: yes, 2019
A small library of sugar-based (i.e., glucose, mannose and lactose) monoesters containing hydrophobic aliphatic or aromatic tails were synthesized and tested.
Biondo, Francesca   +6 more
core   +1 more source

Fate of phthalic acid esters during composting of both lagooning and activated sludges [PDF]

open access: yes, 2005
Among the phthalic acid esters (PAEs) targeted by the United States Environmental Protection Agency (USEPA) as priority pollutants, di-ethyl-hexyl phthalate (DEHP) is the major pollutant identified at high concentration level in lagooning sludge (LS), at
Amir, Soumia   +6 more
core   +2 more sources

A Review on Electrical Breakdown of Natural Ester-Based Nanofluids Under Different Voltage Waveforms

open access: yesIEEE Access
Environmental, safety, and availability constraints of mineral oils have led transformer manufacturers and researchers to turn to alternative liquid dielectrics to mineral oils.
Abderrahmane Beroual   +3 more
doaj   +1 more source

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