Results 51 to 60 of about 481,707 (338)

Transition metal-catalyzed construction of C-X bonds via cleavage of C-N bond of quaternary ammonium salts

open access: yesAIMS Molecular Science, 2023
Amines are abundant in natural product chemistry and are readily available chemical raw materials. The C-N bonds of amines are difficult to break due to the large C-N bond energy.
Qingle Zeng, Fuhai Li , Xianjie Yin
doaj   +1 more source

ATP13A2 is involved in intracellular polyamine transport in lung epithelial cells

open access: yesFEBS Open Bio, EarlyView.
Spermidine transport in lung epithelial cells involves the polyamine transporter ATP13A2. Cell proliferation is associated with the upregulation of ATP13A2. Polyamines are present in all living cells and are implicated in various crucial cellular processes such as proliferation, apoptosis and autophagy.
Yuta Hatori   +8 more
wiley   +1 more source

An Efficient One Pot Procedure for Preparation of Symmetrical N,N'-Disubstituted Urea from Aromatic and Aliphatic Amines and Urea under Microwave Irradiation [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2000
A phosgene-free synthesis of symmetrical N,N'-disubstituted urea by the reaction of aromatic and aliphatic primary amines and urea promoted by  microwave irradiation in the presence of a suitable energy-transfer solvent such as N-N-dimethylacetamide is ...
Mohammad S. Khajavi   +4 more
doaj  

The effect of fluorine-containing inhibitors of corrosion of copper in atmospheric conditions [PDF]

open access: yes, 2016
The effect of fluorine-containing inhibitors of corrosion of copper in atmospheric conditions was studied by method of removing anodic polarization curves and corrosion of full-scale tests.
Ivanov, M. G.   +3 more
core   +2 more sources

Evaluation of in vitro toxicity of common phytochemicals included in weight loss supplements using 1H NMR spectroscopy

open access: yesFEBS Open Bio, EarlyView.
We investigated the toxicity of 12 active compounds commonly found in herbal weight loss supplements (WLS) using human liver and colon cell models. Epigallocatechin‐3‐gallate was the only compound showing significant toxicity. Metabolic profiling revealed protein degradation, disrupted energy and lipid metabolism suggesting that the inclusion of EGCG ...
Emily C. Davies   +3 more
wiley   +1 more source

Correlation and Prediction of Solubility of CO2 in Amine Aqueous Solutions [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2010
The solubility of CO2 in the primary, secondary, tertiary and sterically hindered amine aqueous solutions at various conditions was studied. In the present work, the Modified Kent-Eisenberg (M-KE), the Extended Debye-Hückel (E-DH) and the Pitzer models ...
Mahdi Goharrokhi   +4 more
doaj  

Electrical properties of covalently functionalized graphene

open access: yesAIMS Materials Science, 2017
We have employed first-principle calculations to study transformation of graphene’s electronic structure under functionalization by covalent bonds with di erent atomic and molecular groups - epoxies, amines, PFPA.
Paul Plachinda, David Evans, Raj Solanki
doaj   +1 more source

Automated analysis of oxidative metabolites [PDF]

open access: yes, 1974
An automated system for the study of drug metabolism is described. The system monitors the oxidative metabolites of aromatic amines and of compounds which produce formaldehyde on oxidative dealkylation.
Furner, R. L.
core   +1 more source

Adjustment of Coatings Morphology and Particle Distribution of Layered Silicates by Freeze‐Drying for Improved Gas Barriers

open access: yesAdvanced Engineering Materials, EarlyView.
Freeze‐drying of layered silicate is the key to get coatings with superior gas barrier. Freeze‐drying of layered silicates modified with dodecylamine (DDA) is a highly effective technique for the preparation of barrier pigments that significantly mitigate the permeation of oxygen, water vapor, and hydrogen through polymer films containing these ...
Joshua Lommes   +4 more
wiley   +1 more source

A comparative analysis of virucidal efficiency of biocide agents

open access: yesВопросы вирусологии, 2017
The main groups of biocide agents used for inactivation of bacteria and viruses were studied for their virucidal activity against enveloped (HIV, viral hepatitis C, influenza virus A) and non-enveloped viruses (poliovirus, adenovirus).
N. N. Nosik, D. N. Nosik, A. I. Chizhov
doaj   +1 more source

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