Results 41 to 50 of about 868,974 (345)

Wettability of Quartz by Ethanol, Rhamnolipid and Triton X-165 Aqueous Solutions with Regard to Its Surface Tension

open access: yesColloids and Interfaces, 2023
The wettability of quartz by different liquids and solutions plays a very important role in practical applications. Hence, the wetting behaviour of ethanol (ET), rhamnolipid (RL) and Triton X-165 (TX165) aqueous solutions with regard to the quartz ...
Anna Zdziennicka   +2 more
doaj   +1 more source

Surface Activity of Natural Surfactants Extracted from Sapindus mukorossi and Sapindus trifoliatus Soapnuts

open access: yesColloids and Interfaces, 2021
Surfactants derived from renewable sources such as plants are an ecological alternative to synthetic surfactants. Aqueous solutions of natural surfactants extracted from soapnuts obtained from two plants, Sapindus mukorossi and Sapindus trifoliatus, were
Patrycja Wojtoń   +4 more
doaj   +1 more source

Optimization of Biodiesel Production Using Immobilized Candida Rugosa Lipase on Magnetic Fe3O4-Silica Aerogel [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2019
Hydrophobic magnetic silica aerogel was used as a support to immobilize Candida rugosa lipase by adsorption method. Physical and chemical properties of the support and immobilized lipase were determined by Field Emission Scanning Electron Microscope ...
Leila Amirkhani   +2 more
doaj  

Wetting Behaviour of Water, Ethanol, Rhamnolipid, and Triton X-165 Mixture in the Polymer–Solution Drop–Air System

open access: yesMolecules, 2023
Despite the fact that the wetting properties of multicomponent mixtures including the surface active compounds play a very important role in many practical applications, they are not sufficiently known.
Anna Zdziennicka   +4 more
doaj   +1 more source

Modelling chemotaxis of microswimmers: from individual to collective behavior

open access: yes, 2019
We discuss recent progress in the theoretical description of chemotaxis by coupling the diffusion equation of a chemical species to equations describing the motion of sensing microorganisms. In particular, we discuss models for autochemotaxis of a single
Liebchen, B., Löwen, H.
core   +1 more source

Physical mechanism of anisotropic sensitivity in pentaerythritol tetranitrate from compressive-shear reaction dynamics simulations [PDF]

open access: yes, 2010
We propose computational protocol (compressive shear reactive dynamics) utilizing the ReaxFF reactive force field to study chemical initiation under combined shear and compressive load.
Goddard, William A., III   +4 more
core   +1 more source

Preparation and Surface Characterization of Chitosan-Based Coatings for PET Materials

open access: yesMolecules, 2023
Poly(ethylene terephthalate)—PET—is one of the most frequently used polymers in biomedical applications. Due to chemical inertness, PET surface modification is necessary to gain specific properties, making the polymer biocompatible. The aim of this paper
Klaudia Szafran   +3 more
doaj   +1 more source

Sequence Heterogeneity Accelerates Protein Search for Targets on DNA [PDF]

open access: yes, 2015
The process of protein search for specific binding sites on DNA is fundamentally important since it marks the beginning of all major biological processes. We present a theoretical investigation that probes the role of DNA sequence symmetry, heterogeneity
Alberts B.   +5 more
core   +2 more sources

Chemical Phenomena of Atomic Force Microscopy Scanning [PDF]

open access: yesAnalytical Chemistry, 2018
Atomic force microscopy is widely used for nanoscale characterization of materials by scientists worldwide. The long-held belief of ambient AFM is that the tip is generally chemically inert but can be functionalized with respect to the studied sample.
Petro Maksymovych   +9 more
openaire   +5 more sources

Intrinsic noise induced resonance in presence of sub-threshold signal in Brusselator

open access: yes, 2011
In a system of non-linear chemical reactions called the Brusselator, we show that {\it intrinsic noise} can be regulated to drive it to exhibit resonance in the presence of a sub-threshold signal.
Bartholomay A. F.   +4 more
core   +2 more sources

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