Results 61 to 70 of about 1,787,488 (253)

Study on the concentration and size of vacancy defect in W-K alloy

四川大学学报. 自然科学版, 2019
W-K alloy has many advantages, such as high melting point, the resistance to thermal shock, and excellent resistance to helium hydrogen plasma irradiation.
ZHANG Yuan-Yuan, LIU Nan-Shun, ZHANG Pei-Yuan, DENG Ai-Hong   +3 more
doaj  

Condensed matter investigation by positron lifetime technique [PDF]

AIP Advances
Positron lifetime spectroscopy (PLS) was used to investigate various condensed matter samples, both pure and after certain treatments. The positron lifetime spectrum was measured for four pure alkali halides (NaCl, KCl, KBr, and KI).
Aziz Mouzali, Noureddine Bendjedda
doaj   +1 more source

Mitochondria and Neuromast Tagging With Fluorescent Gallium‐Triapine Analogues: In Cellulo MP FLIM and Zebrafish Live Imaging

Advanced Science, EarlyView.
Fluorescent BODIPY‐conjugated thiosemicarbazone ligands and their Ga(III), In(III), and Fe(III) complexes, inspired by Triapine, are developed as theranostic agents. Multiphoton FLIM and confocal microscopy in cancer cells and zebrafish reveal real‐time uptake, mitochondrial localisation, and whilst spectroscopic assays indicated preserved complex ...
Megan J. Green, Michael W. Jones, Merissa Saleem, Haobo Ge, Melita Tvardauskaite, Julia Dudzic, Fernando Cortezon‐Tamarit, Rory L. Arrowsmith, Charareh Pourzand, Gabriele Kociock‐Kohn, Nicholas H. Rees, Jonathan R. Dilworth, Stephen Faulkner, Stanley W. Botchway, David Gurevich, Sofia I. Pascu   +15 more
wiley   +1 more source

Microstructure and barrier properties of reactive compatibilized PLA/PA11 blends investigated by positron annihilation lifetime spectroscopy

Polymer Testing, 2022
Poly(lactic acid)/polyamide11 (PLA/PA11) blends were prepared by reactive blending with multifunctional epoxy oligomer as compatibilizer, and the compatibility of PLA and PA11 was improved.
Xipo Zhao, Juncheng Li, Xiaolei Yu, Siyu Yang, Jinchao Liu, Weiyi Zhou, Shaoxian Peng   +6 more
doaj   +1 more source

Structural and Compositional Effects on the Scintillation Properties of Fast Emitting Metal‐Organic Frameworks

Advanced Science, EarlyView.
The crystalline structure, the atomic numbers of the constituent elementsand the size of MOF crystals each influence their photoluminescence and scintillation properties in distinct ways. Together, these factors provide valuable guidelines for designing systems with optimized performance and tunable timing characteristics, arising from the synergistic ...
Francesca Cova, Jacopo Perego, Biplab Joarder, Nobuhiro Yanai, Anna Vedda, Silvia Bracco, Angiolina Comotti, Angelo Monguzzi, Irene Villa   +8 more
wiley   +1 more source

Observation of a shape resonance of the positronium negative ion

Nature Communications, 2016
The Positronium negative ion is formed by two electrons bound to a positron, and experimental investigations of its states and energy levels are difficult due to its short lifetime.
Koji Michishio, Tsuneto Kanai, Susumu Kuma, Toshiyuki Azuma, Ken Wada, Izumi Mochizuki, Toshio Hyodo, Akira Yagishita, Yasuyuki Nagashima   +8 more
doaj   +1 more source

Hyperpolarization of [1‐13C]Ketoisocaproate‐d2 by Reversible Exchange with Parahydrogen Enables Profiling of Branched‐Chain‐Amino‐Acid Metabolism in Cellulo and in Vivo

Advanced Science, EarlyView.
We report the fast generation of biocompatible solutions of highly 13C‐hyperpolarized (≈11%) partially‐deuterated ketoisocaproate within <6 min using spin‐lock‐induced crossing and reversible exchange with parahydrogen (SLIC‐SABRE). This enables rapid detection of branched‐chain‐amino‐acid transferase 1 (BCAT1) protein expression and investigation of ...
Stefan Petersen, Philipp R. Groß, Paul M. Schmidt, Henri de Maissin, Asitan Rittinger, Robert Willing, Adriana Sacristán‐Martín, Lisa Heß, Jule Koch, Sebastian Lucas, Maxim Zaitsev, Dominik von Elverfeldt, Martin Grashei, Franz Schilling, Jan‐Bernd Hövener, André F. Martins, Max von Delius, Thomas Reinheckel, Andreas B. Schmidt   +18 more
wiley   +1 more source

Positron Lifetime Spectroscopy of Silicon Nanocontainers for Cancer Theranostic Applications [PDF]

, 2018
Biocompatibility and biodegradability of porous silicon (por-Si) nanoparticles (NPs), as well as the fact that they can selectively accumulate in tumor tissues, allow using them as containers for delivery of diagnostic markers or drugs for therapy of ...
Shtotsky, Yu V, Timoshenko, V Yu, Dubov, L Yu, Stepanov, S V, Akmalova, Yu A   +4 more
core   +1 more source

Positron Annihilation Spectroscopy Study on Annealing Effect of CuO Nanoparticles [PDF]

Materials Research, 2016
The microstructure and defects of CuO nanoparticles under isochronal annealing were investigated by positron annihilation spectroscopy (PAS), X-ray diffraction (XRD) and scanning electron microscope (SEM).
Jianjian Shi, Jiaheng Wang, Wei Yang, Zhejie Zhu, Yichu Wu   +4 more
doaj   +2 more sources

Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy

Nanomaterials, 2021
The quantitative characterization of microstructure is most desirable for the establishment of structure-property relationships in polymer nanocomposites.
Xiaobing Han, Tao Chen, Yuan Zhao, Jie Gao, Yanan Sang, Houhua Xiong, Zhiyuan Chen   +6 more
doaj   +1 more source