Results 261 to 270 of about 864,018 (322)

Total X‐Ray Illumination for Absolute Quantification of Crystalline Phases and Amorphous Content in PVDF and P(VDF‐TrFE)

Macromolecular Materials and Engineering, EarlyView.
A rigorous method, Total Illumination by X‐rays (TIX), is presented to quantify crystalline and amorphous phases in organic materials. Mitigating challenges such as low microabsorption and high amorphous content, an improved, general framework is established, applicable to polymers, MOFs, biological materials, etc.
Shaashwat Saraff, Giulio Isacco Lampronti, Sohini Kar‐Narayan   +2 more
wiley   +1 more source

Strain‐Induced Density Fluctuations in Glassy Polymers

Macromolecular Rapid Communications, EarlyView.
Strain deformation induces the density fluctuations in glassy polymers, resulting in shear‐thinning behavior. ABSTRACT Deformation of glassy polymers induces plastic flow as a result of mechanical instability, ultimately leading to cavitation and fracture of the liquid. Thus, understanding the origin of such mechanical instability is crucial.
Mikihito Takenaka, Shin'ya Yoshioka, Hirofumi Shimizu, Shotaro Nishitsuji, Sumiaki Fujii, Ryuta Izumi, Shuhei Fujita, Tadashi Inoue, Akira Furukawa   +8 more
wiley   +1 more source

Ambiguities in Assigning Single‐Crystal NMR Data to Individual Atoms in the Crystal Structure: A Case Study of Hambergite, Be2$$ {}_2 $$BO3$$ {}_3 $$OH, by 9$$ {}^9 $$Be and 11$$ {}^{11} $$B NMR Spectroscopy, XRD Measurements and DFT Calculations

Magnetic Resonance in Chemistry, EarlyView.
The fundamental question of how to assign NMR resonances to specific atoms in the unit cell is addressed by using the 9Be and 11B spectra of the natural mineral hambergite as a model system. ABSTRACT The NMR interaction tensors of 9$$ {}^9 $$Be and 11$$ {}^{11} $$B of hambergite, Be2$$ {}_2 $$BO3$$ {}_3 $$OH, were derived from single‐crystal NMR ...
Jennifer Steinadler, Georg Krach, Kristian Witthaut, Tobias Stürzer, Rupert Hochleitner, Wolfgang Schnick, Thomas Bräuniger   +6 more
wiley   +1 more source

PortGISANS: nested mirror optics for a portable GISANS adapter. [PDF]

Sci Rep
Mehler F, Jaksch S, Cárdenas M, Nickel B, Wolff M.   +4 more
europepmc   +1 more source

Characterization of Fuel Rods Supported by Dimple‐Less Spacer Grids and Subjected to Nonlinear Vibrations

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT An experimental campaign was undertaken to demonstrate the applicability of the Bouc–Wen hysteretic model to describe the hysteretic system of the recent Framatome dimple‐less spacer grid design for Pressurized Water Reactors. The experimental setup subjected a reduced‐length fuel rod, supported at both ends by dimple‐less grids, to forced ...
Giovanni Ferrari, Brian Painter, Kostas Karazis, Marco Amabili   +3 more
wiley   +1 more source

Mechanical and radiation shielding assessment of high-density/magnetite-cementitious plaster for repair and retrofit of nuclear power plant structures. [PDF]

Sci Rep
Attia EM, El-Samrah MG, Rashad M, Nabil IM, Ali MAEM.   +4 more
europepmc   +1 more source

Gap Symmetry, Electronic Structure and Interplay Between Superconductivity and Spin Density Wave in Sr1−xKxFe2As2 Superconductor

Nano Select, EarlyView.
In moderately hole‐doped Sr1−xKxFe2As2${\rm Sr}_{1-x}{\rm K}_x{\rm Fe}_2{\rm As}_2$ system the pairing state is s+−${\rm s}^{+-}$ wave pairing state mediated by spin fluctuations. As the SDW order parameter increases, TC${\rm T}_C$ decreases and TM${\rm T}_M$ increases. As temperature increases, the SDW order parameter decreases and vanishes at TM${\rm
Gedefaw Mebratie, Tamiru Negussie, Geberegziabher Kahsay   +2 more
wiley   +1 more source

Temperature-Dependent Structural Transition in Cu-Intercalated Trigonal CuYbSe₂. [PDF]

Chem Mater
Boswell M, Xu M, Hus SM, Dos Santos AM, Xie W.   +4 more
europepmc   +1 more source

Mikrometeorite und ihr Ursprung im Sonnensystem: Außerirdischer Staub zum Anfassen

Physik in unserer Zeit, EarlyView.
Mit einer Größe, die der Dicke eines Haares entspricht, sind Mikrometeorite kaum sichtbar für das bloße Auge. Dennoch werden sie seit etwa 150 Jahren gesammelt, und seit wenigen Jahren sogar auf unseren Hausdächern. Als Kostproben von Asteroiden oder Kometen stellen sie wertvolle Boten unseres Sonnensystems dar.
Jenny Feige
wiley   +1 more source

Neutron Attenuation and Mechanical Properties of Lithium-Cadmium Oxide-Polyester Resin Composites for Space Applications. [PDF]

J Biomed Phys Eng
Vafapour H, Mortazavi SMJ.
europepmc   +1 more source