Results 21 to 30 of about 26,848 (281)

Detergents

open access: yesOléagineux, Corps gras, Lipides, 2001
Surfactants are amphiphile molecules. They can be anionic, cationic, nonionic or amphoteric. They are among the main ingredients encountered in detergents and personal care products.
Ho Tan Tai Louis   +1 more
doaj   +1 more source

Research on imbibition effect of surfactant fracturing fluid in offshore reservoirs with low permeability and high temperature

open access: yesFrontiers in Energy Research, 2023
Surfactant imbibition can effectively improve the development effect of fracturing technique. In order to enhance oil recovery, a temperature resistant surfactant was selected using interfacial tension and contact angle testers based on the offshore ...
Yigang Liu   +5 more
doaj   +1 more source

Bottom sediments of Lake Rotoma [PDF]

open access: yes, 1983
Lake Rotoma is a deep (70-80 m), oligotrophic, warm monomictic lake of volcanic origin with insignificant stream inflow and no clearly defined outflow. For at least 60 years up to 1972 the lake level fluctuated markedly about an overall rising trend of ...
_____   +46 more
core   +2 more sources

pH-Mediated Regulation of Polymer Transport Through SiN Pores [PDF]

open access: yes, 2018
We characterize the pH controlled polymer capture and transport thorough silicon nitride (SiN) pores subject to protonation. A charge regulation model able to reproduce the experimental zeta potential of SiN pores is coupled with electrohydrodynamic ...
Ala-Nissila, Tapio, Buyukdagli, Sahin
core   +2 more sources

Fluorescent Probes Derived from the Polyene Class of Antifungal Drugs Reveal Distinct Localization Patterns and Resistance-Associated Vacuolar Sequestration in Candida Species. [PDF]

open access: yesAngew Chem Int Ed Engl
Fluorescent probes derived from all three clinically used polyene antifungals (amphotericin B, nystatin, and natamycin) enabled direct visualization of distribution in yeast cells of various Candida species. While retaining the ergosterol‐dependent mode of action of their parent drugs, the probes revealed distinct, structure‐specific localization ...
Shbeta M   +6 more
europepmc   +3 more sources

Amphoteric composite of ZrP and N-doped porous carbon: Synthesis, characterization, and potential use for cycloaddition of CO2

open access: yesHeliyon, 2023
Composites of amorphous ZrP and N-doped carbon were prepared in a one-step pyrolysis process instead of general post-loading technique. Owing to their mesoporous structure (6–10 nm) and Zr content (up to 41 wt%), the amphoteric materials have potential ...
Yumiao Zhou   +7 more
doaj   +1 more source

Systematic front distortion and presence of consecutive fronts in a precipitation system [PDF]

open access: yes, 2006
A new simple reaction-diffusion system is presented focusing on pattern formation phenomena as consecutive precipitation fronts and distortion of the precipitation front.The chemical system investigated here is based on the amphoteric property of ...
Izsák, F.   +3 more
core   +4 more sources

Log D analysis using dynamic approach

open access: yesBiochemistry and Biophysics Reports, 2018
Log D the logarithm (log10) of the distribution coefficient (D), is one of the important parameters used in Lipinski's rule to assess the druggability of a molecule in pharmaceutical formulations.
Ganeshkumar Krishnamoorthy   +6 more
doaj   +1 more source

Effect of cationic monomer structure on the aggregation behavior of amphoteric acrylic polymer around isoelectric point

open access: yesJournal of Leather Science and Engineering, 2022
Amphoteric polymer can be used as retanning agent in leather manufacture. It is particularly useful in chrome-free tanning systems since it can regulate the charge properties of chrome-free leather and enhance the fixation of anionic post-tanning ...
Qijun Li   +4 more
doaj   +1 more source

Synthesis and properties of lipoamino acid/fatty acid mixtures. Influence of the amphiphilic structure. [PDF]

open access: yes, 2009
The acylation of amino acids by acid chlorides with from 8 to 12 carbon atoms, in alkaline aqueous medium following Shotten-Baumann reaction, results in sodium salts of Nα-acylamino acids and fatty acids mixture. These lastest are present in proportion
Alric, Isabelle   +4 more
core   +2 more sources

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