Results 241 to 250 of about 673,091 (300)

Integrated biomarker analysis of multi-organ effects following MDMA and alcohol co-consumption in Pakistan: A pilot study. [PDF]

open access: yesToxicol Rep
Jaleel A   +7 more
europepmc   +1 more source

Plastics to fertilizer: A polymer system based on isosorbide as a monomer, plasticizer, and fertilizer. [PDF]

open access: yesSci Rep
Fujimata S   +9 more
europepmc   +1 more source
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Imidazolidinyl Urea

International Journal of Toxicology, 2023
The Expert Panel for Cosmetic Ingredient Safety reviewed updated information that has become available since their original assessment from 1980, along with updated information regarding product types, and frequency and concentrations of use, and reaffirmed their original conclusion that Imidazolidinyl Urea is safe as a cosmetic ingredient in the ...
Christina, Burnett   +10 more
openaire   +2 more sources

The Urea Renaissance

Angewandte Chemie International Edition, 2011
AbstractOver the last decade the use of urea derivatives as useful reagents, catalysts, and structural features in organic chemistry has increased rapidly. They now find utility as hydrogen‐bond donors in organocatalysts and anion transporters, as important scaffolds in supramolecular chemistry, as lithiation directors, amination substrates, and ...
Volz, Nicole, Clayden, Jonathan
openaire   +4 more sources

Plasma urea kinetics in urea infusion

Clinical Pharmacology & Therapeutics, 1972
Seven patients undergoing an infusion of 30 per cent urea‐10 per cent invert sugar solution (Urevert) for treatment of cerebral edema were studied with regard to plasma urea kinetics. The 2 compartment (extracellular and intracellular fluid spaces) model has been applied to analysis of the plasma levels.
P R, Yarnell   +3 more
openaire   +2 more sources

Aqueous Urea Solutions:  Structure, Energetics, and Urea Aggregation [PDF]

open access: yesJournal of Physical Chemistry B, 2007
Urea is ubiquitously used as a protein denaturant. To study the structure and energetics of aqueous urea solutions, we have carried out molecular dynamics simulations for a wide range of urea concentrations and temperatures. The hydrogen bonds between urea and water were found to be significantly weaker than those between water molecules, which drives ...
Helmut Grubmüller, Martin Stumpe
exaly   +5 more sources

“Urea to Urea” Approach: Access to Unsymmetrical Ureas Bearing Pyridyl Substituents

Advanced Synthesis & Catalysis, 2022
AbstractA protocol for the synthesis of unsymmetrical ureas substituted by pyridyl/quinolinyl moiety has been developed. This method concluded in metal‐ and base‐free reamination of N,N‐dimethyl‐N‘‐hetaryl ureas with a wide range of aryl and alkyl amines. The isolated yields vary from 40 to 96% depending on the nucleophilicity of the amines.
Svetlana O. Kasatkina   +4 more
openaire   +1 more source

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