Results 91 to 100 of about 1,771,729 (203)

Studies of unicellular microorganisms Saccharomyces cerevisiae by means of positron annihilation lifetime spectroscopy

open access: yesNukleonika, 2015
Results of positron annihilation lifetime spectroscopy (PALS) and microscopic studies on simple microorganisms, brewing yeasts, are presented. Lifetime of ortho-positronium (o-Ps) were found to change from 2.4 to 2.9 ns (longer-lived component) for ...
Kubicz Ewelina   +28 more
doaj   +1 more source

Applied Design Strategies for MOFs in CO2 Capture: Balancing Stability, Selectivity, and Scalability

open access: yesChemistrySelect, Volume 11, Issue 21, 4 June 2026.
Applied design strategies for MOFs enable efficient CO2 capture by balancing structural stability, gas selectivity, and industrial scalability. These approaches enhance gas selectivity and adsorption capacity while maintaining thermal, chemical, and hydrolytic stability, allowing for energy‐efficient regeneration and cost‐effective scalability in ...
Richa Vinayak
wiley   +1 more source

Pals3D - A data acquisition software for positron annihilation lifetime spectroscopy

open access: yes, 2019
<p><strong>Pals3D</strong> is a graphical application for data acquisition for positron annihilation lifetime spectroscopy experiments.
Aurélie Vancraeyenest (8225763)   +1 more
core   +1 more source

Carcinogenicity Screening of Chemicals Using Positron Annihilation Spectroscopy [PDF]

open access: yes, 2018
Chemical carcinogens are the main cause of cancer. Many thousands of new chemicals are synthesized annually in the world, unknown part of them is carcinogens. There are several methods, which are currently used for testing carcinogenicity.
Shtotsky, Yu V   +5 more
core   +1 more source

Free Volume and Gas Permeation in Anthracene Maleimide-Based Polymers of Intrinsic Microporosity

open access: yesMembranes, 2015
High free-volume copolymers were prepared via polycondensation with 2,3,5,6,-tetrafluoroterephthalonitrile (TFTPN) in which a portion of the 3,3,3',3'-tetramethyl-1,1'-spirobisindane (TTSBI) of PIM-1 was replaced with dibutyl anthracene maleimide (4bIII)
Muntazim Munir Khan   +8 more
doaj   +1 more source

Membrane Engineering for Battery Systems: Bridging Design Principles and Frontier Applications

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 3, May 2026.
The review emphasizes membrane separators' role in battery performance and safety, covering redox flow, lithium‐ion, and solid‐state batteries. It reviews advances in membrane materials (e.g., polymer electrolytes, hybrid composites) and ion transport mechanisms, while addressing challenges like dendrite growth and crossover losses.
Xiaoqun Zhou   +3 more
wiley   +1 more source

Design and Implementation of a Digital Positron Annihilation Lifetime Spectrometer for Measurements in Graphite

open access: yes, 2009
A digital Positron Annihilation Lifetime Spectrometer was designed and used to perform measurements on three graphite materials, reactor grade graphite, pyrolytic graphite, and a foam graphite developed by Oak Ridge National Laboratory.
Bodnaruk, Ethan Wesley
core  

Positron annihilation lifetime in situ study of deformed polyolefin elastomers [PDF]

open access: yes, 2005
The positron annihilation lifetime spectroscopy was used to investigate the free volume hole size of ethylene octane copolymers as a function of deformation in the range from 0 to 110% in steps of 10%.
Krzemień, K.   +5 more
core   +2 more sources

Radiation damage analysis by positron annihilation spectroscopy [PDF]

open access: yes, 1979
The application of positron annihilation spectroscopy (PAS) to the characterization and study of defects in metals produced by radiation damage is discussed.
Siegel, R. W.
core  

Generation and characterization of point defects in SrTiO3 and Y3Al5O12

open access: yesResults in Physics, 2015
Positron annihilation lifetime spectroscopy (PALS) was applied to characterize point defects in single crystals of Y3Al5O12 and SrTiO3 after populating different types of defects by relevant thermal treatments.
F.A. Selim   +5 more
doaj   +1 more source

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