Results 1 to 10 of about 1,395,619 (258)

Medical contrast media as possible tools for SAXS contrast variation [PDF]

open access: yesIUCrJ, 2019
Small-angle X-ray scattering (SAXS) is increasingly used to extract structural information from a multitude of soft-matter and biological systems in aqueous solution, including polymers, detergents, lipids, colloids, proteins and RNA/DNA.
Frank Gabel   +3 more
doaj   +7 more sources

Measuring the counterion cloud of soft microgels using SANS with contrast variation [PDF]

open access: yesNature Communications, 2023
The behavior of microgels and other soft, compressible colloids depends on particle concentration in ways that are absent in their hard-particulate counterparts.
Boyang Zhou   +2 more
doaj   +2 more sources

Effect of Luminance and Contrast Variation on Stereoacuity Measurements Using Smartphone Technology [PDF]

open access: yesJournal of Ophthalmology, 2021
Owing to the limitations of printed stereoacuity tests, the effects of luminance and contrast on stereopsis have not yet been sufficiently investigated, despite its important implications in designing stereoacuity measuring instruments, particularly for ...
Lu Liu   +3 more
doaj   +2 more sources

DENSS-multiple: A structure reconstruction method using contrast variation of small-angle neutron scattering based on the DENSS algorithm [PDF]

open access: yesBBA Advances, 2022
The 3D structure of biomacromolecules, such as protein and DNA/RNA, provide keys to understanding their biological functions. Among many structural biology techniques, small-angle scattering techniques with ab initio methods have been widely used to ...
Jacob Sumner, Shuo Qian
doaj   +2 more sources

First Experiment of Spin Contrast Variation Small-Angle Neutron Scattering on the iMATERIA Instrument at J-PARC

open access: yesQuantum Beam Science, 2020
Recently, we have developed a novel dynamic nuclear polarization (DNP) apparatus with a magnetic field of 7 T and a sample temperature of 1 K. High proton spin polarizations from −84% to 76%, for TEMPO doped polystyrene samples, have been demonstrated ...
Yohei Noda   +5 more
doaj   +3 more sources

Contrast variation method applied to structural evaluation of catalysts by X-ray small-angle scattering [PDF]

open access: yesScientific Reports
In the process of developing carbon-supported metal catalysts, determining the catalyst particle-size distribution is an essential step, because this parameter is directly related to the catalytic activities.
Albert Mufundirwa   +5 more
doaj   +2 more sources

The Multilevel Structure of Sulfonated Syndiotactic-Polystyrene Model Polyelectrolyte Membranes Resolved by Extended Q-Range Contrast Variation SANS [PDF]

open access: yesMembranes, 2019
Membranes based on sulfonated synditoactic polystyrene (s-sPS) were thoroughly characterized by contrast variation small-angle neutron scattering (SANS) over a wide Q-range in dry and hydrated states.
Maria-Maddalena Schiavone   +3 more
doaj   +2 more sources

Contrast improvement of backscatter x-ray images by total variation method [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2023
The basis of backscatter X-ray imaging systems is the scattering of backscattered rays that have many applications in industry and inspection. In these images, organic materials with low atomic numbers, such as drugs and explosives, produce many ...
M. Azimi   +6 more
doaj   +1 more source

Small-Angle Neutron Scattering for Studying Lipid Bilayer Membranes

open access: yesBiomolecules, 2022
Small-angle neutron scattering (SANS) is a powerful tool for studying biological membranes and model lipid bilayer membranes. The length scales probed by SANS, being from 1 nm to over 100 nm, are well-matched to the relevant length scales of the bilayer,
William T. Heller
doaj   +1 more source

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