Results 151 to 160 of about 11,915 (255)

Shielded magnetic small-angle neutron scattering for characterization of radioactive samples. [PDF]

open access: yesJ Appl Crystallogr
Field KG   +5 more
europepmc   +1 more source

Towards routine accurate electron‐density studies of biological macromolecules

open access: yesActa Crystallographica Section D, EarlyView.
Here, we describe the determination of the highest resolution structure in the PDB at 0.43 Å resolution. Electron‐density maps reveal extensive deformation electron density that is completely accounted for by performing transferable aspherical atom refinements using the DiSCaMB library in BUSTER.We report here the structure of Pyrococcus abyssi ...
Elham Paknia   +10 more
wiley   +1 more source

One‐more‐vertex Next‐Event Estimation with Hierarchical Geometry Sampling

open access: yesComputer Graphics Forum, EarlyView.
Abstract Robust next‐event estimation (NEE) remains a challenge in scenes characterized by sparse or small‐scale geometry where indirect illumination is the primary transport mechanism. In these scenes, traditional path construction, which relies on local directional sampling, often fails to find intersections with the sparse geometry, and standard NEE
Jorge Garcia‐Pueyo   +3 more
wiley   +1 more source

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook   +38 more
wiley   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

open access: yesExperimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Size-exclusion chromatography-small-angle neutron scattering system optimized for an instrument with medium neutron flux. [PDF]

open access: yesJ Appl Crystallogr
Morishima K   +7 more
europepmc   +1 more source

A New Paradigm for Understanding the Rheology and Processability of Poly(p‐Phenylene Terephthalamide) Liquid‐Crystalline Solutions

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 34, September 10, 2026.
Kevlar is traditionally modeled as a rigid‐rod polymer, yet rheological behavior deviates from this assumption. The review introduces a novel “twist‐tie” entanglement theory for aramid polymer chains in the nematic liquid crystal state, providing a molecular explanation for deviations from rigid‐rod models. Understanding twist‐tie entanglement dynamics
Emma Egli   +3 more
wiley   +1 more source

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