Results 31 to 40 of about 224,062 (299)

Automated Chemical Crystallography [PDF]

open access: yesJournal of the American Chemical Society, 2010
The first fully automated small-molecule robotic X-ray diffractometer is described. After demonstrating the utility of the instrument using multiple samples of ammonium bitartrate, we investigated the conformational chirality of diphenyl dichalcogenide (E(2)Ph(2), where E = S, Se, or Te).
Fuller, Amy   +5 more
openaire   +4 more sources

Precise local control of liquid crystal pretilt on polymer layers by focused ion beam nanopatterning

open access: yesBeilstein Journal of Nanotechnology, 2019
Background: The alignment of liquid crystals by surfaces is crucial for applications. It determines the director configuration in the bulk, its stability against defects and electro-optical switching scenarios. The conventional planar alignment of rubbed
Maxim V. Gorkunov   +4 more
doaj   +1 more source

Fifteen years of the Protein Crystallography Station: the coming of age of macromolecular neutron crystallography

open access: yesIUCrJ, 2017
The Protein Crystallography Station (PCS), located at the Los Alamos Neutron Scattering Center (LANSCE), was the first macromolecular crystallography beamline to be built at a spallation neutron source.
Julian C.-H. Chen, Clifford J. Unkefer
doaj   +1 more source

Multigrain crystallography

open access: yesZeitschrift für Kristallographie, 2012
We summarize exploratory work on multigrain crystallography. The experimental arrangement comprises a monochromatic beam, a fully illuminated sample with up to several hundred grains in transmission geometry on a rotary table and a 2D detector. Novel algorithms are presented for indexing, integration and filtering with emphasis on handling the ...
Sørensen, Henning Osholm   +10 more
openaire   +5 more sources

Mineralogical Crystallography

open access: yesCrystals, 2020
Crystallography remains, for mineralogy, one of the main sources of information on natural crystalline substances [...]
Vladislav V. Gurzhiy
doaj   +1 more source

Structure and mutation of deoxypodophyllotoxin synthase (DPS) from Podophyllum hexandrum

open access: yesFrontiers in Catalysis, 2023
Deoxypodophyllotoxin synthase (DPS) is a 2-oxoglutarate (2-OG) dependent non-heme iron (II) dioxygenase that catalyzes the stereoselective ring-closing carbon-carbon bond formation of deoxypodophyllotoxin from the aryllignan (−)-yatein ...
Zoe Ingold   +3 more
doaj   +1 more source

Gender and Library of Mineralogy

open access: yesCrystals, 2022
Few would expect women to feature often in the literature on minerology from the 15th through the 19th centuries, the recorded history of science being what it is.
Bart Kahr
doaj   +1 more source

Electron crystallography [PDF]

open access: yesActa Crystallographica Section A Foundations of Crystallography, 1996
The idea of solving unknown crystal structures from experimental electron-diffraction intensities and high-resolution electron micrographs has remained a controversial topic in the 60 year history of electron crystallography. In this review it will be shown that the application of modern direct phasing techniques, familiar to X-ray crystallographers ...
openaire   +2 more sources

Microstructural Study of MgB2 in the LiBH4-MgH2 Composite by Using TEM

open access: yesNanomaterials, 2022
The hampered kinetics of reactive hydride composites (RHCs) in hydrogen storage and release, which limits their use for extensive applications in hydrogen storage S1and energy conversion, can be improved using additives.
Ou Jin   +9 more
doaj   +1 more source

X-ray-Induced Heating in the Vicinity of the X-ray Interaction Point

open access: yesApplied Sciences, 2023
When X-rays pass through a material, radiation damage occurs, and heat is generated at the X-ray interaction point, which can then be transferred around the X-ray irradiation site. This X-ray-induced heat transfer can affect the temperature of the sample
Jangwoo Kim, Ki Hyun Nam
doaj   +1 more source

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