Dried methanol extract of Hypericum hyssopifolium subsp. elongatum var. elongatum was dissolved in distilled water, and then fractioned by re-extracting with petroleum ether, chloroform, and ethyl acetate, subsequently. Antioxidant and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging acti...
A liquid membrane containing N503, N,N-di(1-methylheptyl) acetamide, as a mobile carrier, is proposed for the high efficient removal of phenol from waste water. Effects of different factors on phenol removal are investigated. Under the optimum operation condition obtained very satisfactory resul...
This work is a comprehensive study on removal of phenols from coal gasification wastewater (CGW) through a polypropylene hollow fiber supported liquid membrane (HF-SLM). Factors affecting removal of phenols such as composition of liquid membrane phase, design of mass transfer process, proportion...
The polymer inclusion membranes (PIMs) containing polyvinyl chloride (PVC) as polymer matrix and N,N-di(1-methylheptyl) acetamide (N503) as a specific carrier were prepared by solvent evaporation. Microstructure and mechanical properties of PIMs were characterized by scanning electron microscope...
The use of lipid derived components as a raw material for the preparation of solketal fatty esters via heterogeneous catalysis route is the main objective of this work as an attempt to maintain the sustainability of biodiesel production industries. Oxides derived from highly abundant and low cos...
The ester aroma profiles of five Chinese cherry wines and the perceptual interaction among esters were investigated in this study. 24 esters were identified by Gas chromatography-olfactometry (GC–O) and Gas Chromatography-Mass Spectrometer (GC–MS). According to addition/omission analysis, seve...
Methyl linolenate (C18-3) is a type of unsaturated fatty acid methyl ester with high biological activity. Membrane separation of C18-3 from tallow seed oil methyl ester by supported ionic liquids membranes (SILM) containing carrier Ag+ was successfully achieved in this study. The interaction bet...
The neurotoxin ß-N-oxalylamino-l-alanine (BOAA), found in Lathyrus sativus seeds, is thought to be the causative agent of neurolathyrism. We have investigated the in vivo mechanism of action of BOAA by focal injection (1 μl) in the dorsal hippocampus of male Wistar rats and comparing the pathol...
In order to elucidate the substrate specificity of alanyl-tRNA synthetase, 5′-O-[N-(l-alanyl)sulfamoyl]adenosine (Ala-SA), an analogue of alanyl-AMP, was chemically synthesized. Its binding ability is similar to that of the substrate based on the inhibitory activity for the aminoacylation of al...
Excitation energy migration and transfer study in a new dye pair 3,3′-dimethyloxacarbocyanine iodide (DMOCI) (donor) to o-(6-diethylamino-3-diethylimino-3H-xanthen-9-yl) benzoic acid (RB) (acceptor) has been carried out in thin films of polyvinyl alcohol (PVA) by steady state and ps time-resolv...
The formation of acid anhydrides from the phosphorous-mediated activation of carboxylic acids was investigated. Under various systems, activation of benzoic acid in the presence of base led to the formation of benzoic anhydride at different rates depending on the reactivity of the reagents. Usin...
Several new dyes derivatives of the “rhodamine-like” 6-(N,N-diethylamino)-1,2,3,4-tetrahydroxanthylium heterocyclic system displaying absorption within the near-infrared were synthesized. The photochemical behaviour of these molecules was evaluated in dichloromethane, regarding their ground st...
2-(3-Ethylthioureido)benzoic acid was prepared and characterized by electronic spectrum, elemental analysis, Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance spectrum and mass spectrum. The produced ligand was applied for the preconcentrative of Fe3+, Co2+, Cu2+ and Zn2+ in...
The formal metal(III) cations [CoO2H2]+ and [NiO2H2]+ can be generated by electrospray ionization of aqueous solutions of the corresponding metal(II) nitrates. In contrast to MFe, the fragmentations of [CoO2H2]+ and [NiO2H2]+ imply that the hydrated metal-oxide cations, (H2O)MO+, are more favora...
The increasing demand for clean renewable energy needed for sustainable industrial progress and population growth is the driving force for the scientific community to achieve a continuous development in the field of photocatalysis and photoelectrochemistry. Nanostructures and nanomaterials have ...
2-Acetyl-1-pyrroline (2AP) is a popular yet highly unstable aroma compound, which limits its commercial use as a flavoring ingredient. The stability and application of spray-chilled paraffin-coated microcapsules of 2AP zinc chloride complex (2AP–ZnCl2) were investigated in this study. 2AP–ZnCl...
Zinc (Zn) is a fundamental trace element for cell viability and physiology, and concentrations above the physiological level may lead to cell damage. In order to explore the effect of zinc chloride (ZnCl2) on murine photoreceptor cells, in this study, we investigated the alterations of murine ph...
The aim of this in vitro study was to evaluate the effect over time of zinc chloride (ZnCl2) incorporated into the primer of a two-step self-etching adhesive system (Clearfil SE Bond, Kuraray - SE) on long-term microtensile bond strength (μTBS) to caries-affected dentin (CAD), and on flexural s...
The hygroscopic zinc chloride (ZnCl2) is often used to generate smoke screens. Severe adverse pulmonary health effects have been associated with inhalation of ZnCl2 smokes. The underlying molecular toxicology is not known. Recent studies have shown that the Transient Receptor Potential Channel A...
An efficient and one step production of acetylated and esterified chitin nanocrystals (CNCs) was successfully achieved using choline chloride-zinc chloride deep-eutectic solvent (ChCl-ZnCl2 DES). In this method, ChCl-ZnCl2 DES with a mole ratio of 1:2, was used for the esterification and O-acety...
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View