Results 31 to 40 of about 513,910 (295)

Current Update on Intrinsic and Acquired Colistin Resistance Mechanisms in Bacteria

open access: yesFrontiers in Medicine, 2021
Colistin regained global interest as a consequence of the rising prevalence of multidrug-resistant Gram-negative Enterobacteriaceae. In parallel, colistin-resistant bacteria emerged in response to the unregulated use of this antibiotic.
Firdoos Ahmad Gogry   +3 more
doaj   +1 more source

Luminescence quenching studies of [Ru(dMeObpy)3]2+ complex using the quinone derivative-effect of micelles [PDF]

open access: yesJournal of Particle Science and Technology, 2023
Quinones are considered a class of organic compounds having a quinonoid group and are the ultimate electron acceptors. Due to this property, they have favourable redox potential and the ability to form stable hydrogen bonds. Luminescence quenching is one
Thangadurai Sumitha Celin   +1 more
doaj   +1 more source

Electrostatic interactions between spheroidal dielectric particles [PDF]

open access: yesThe Journal of Chemical Physics, 2020
Theory is developed to address the significant problem of electrostatic interactions between charged polarizable dielectric spheroids. The electrostatic force is defined by particle dimensions and charge, dielectric constants of the interacting particles and medium, and the interparticle separation distance; and it is expressed in the form of an ...
Ivan N. Derbenev   +3 more
openaire   +2 more sources

Open-loop amplitude-modulation Kelvin probe force microscopy operated in single-pass PeakForce tapping mode

open access: yesBeilstein Journal of Nanotechnology, 2021
The open-loop (OL) variant of Kelvin probe force microscopy (KPFM) provides access to the voltage response of the electrostatic interaction between a conductive atomic force microscopy (AFM) probe and the investigated sample. The measured response can be
Gheorghe Stan, Pradeep Namboodiri
doaj   +1 more source

Some Energy Issues for a Nanoscale Electrostatic Potential Well in Saline Solutions

open access: yesChemosensors, 2020
An electrostatic potential well may be applied to trap and manipulate charged micro- and nanoparticles. An electrostatic potential well obtained from a certain charge distribution may be used to mimic the electrostatic interactions among biomolecules in ...
Jingkun Guo   +4 more
doaj   +1 more source

Solubility Controlling Peptide Tags of Opposite Charges Generate a Bivalent Immune Response Against Dengue ED3 Serotypes 3 and 4

open access: yesFrontiers in Immunology, 2021
We previously demonstrated that a protein’s immunogenicity could be substantially increased by attaching a hydrophobic solubility controlling peptide tag (SCP-tag) producing small sub-visible aggregates.
Nafsoon Rahman   +5 more
doaj   +1 more source

Electrostatic Interactions in Aminoglycoside-RNA Complexes [PDF]

open access: yesBiophysical Journal, 2015
Electrostatic interactions often play key roles in the recognition of small molecules by nucleic acids. An example is aminoglycoside antibiotics, which by binding to ribosomal RNA (rRNA) affect bacterial protein synthesis. These antibiotics remain one of the few valid treatments against hospital-acquired infections by Gram-negative bacteria.
Kulik, Marta   +4 more
openaire   +2 more sources

Electrostatic interaction of neutral semipermeable membranes

open access: yes, 2012
We consider an osmotic equilibrium between bulk solutions of polyelectrolyte bounded by semipermeable membranes and separated by a thin film of salt-free liquid.
Bocquet, Lyderic   +4 more
core   +1 more source

A protein self-assembly model guided by electrostatic and hydrophobic dipole moments.

open access: yesPLoS ONE, 2019
Protein self-assembling is studied under the light of the Biological Membrane model. To this purpose we define a simplified formulation of hydrophobic interaction energy in analogy with electrostatic energy stored in an electric dipole.
Angel Mozo-Villarías, Enrique Querol
doaj   +1 more source

Quantum-chemical study of C-H•••O interactions between HTcO₄ and aromatic amino acids [PDF]

open access: yesJournal of the Serbian Chemical Society
This study investigates C–H···O interactions between HTcO4 and aromatic amino acids (phenylalanine, tyrosine and tryptophan) through quantum- chemical calculations.
Bigović Miljan   +3 more
doaj   +1 more source

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