Results 81 to 90 of about 58,492 (234)
Metallurgical and Materials Transactions. A, 2018 Single-crystalline superalloy CMSX-4 is studied in the as-cast state and after heat treatment, with material being taken from turbine blade castings.
J. Krawczyk +4 more
semanticscholar +1 more source
Investigation of Positron Annihilation Lifetime Spectroscopy and Tensile behavior of Graphene Oxide/Epoxy Nanocomposites [PDF]
Journal of Advanced Materials in EngineeringIntroduction and Objectives: Positron Annihilation Lifetime Spectroscopy is a sensitive method for investigating the free volume in polymers at the atomic scale, enabling the determination of pore size, shape, and concentration.
Mohammad Koohkan +2 more
doaj +1 more source
Testing antimatter gravity with muonium
, 2014 The debate about how antimatter or different antimatter systems behave gravitationally will be ultimately decided by experiments measuring directly the acceleration of various antimatter probes in the gravitational field of the Earth or perhaps redshift ...
Khaw, Kim Siang, Kirch, Klaus
core +1 more source
Undoped gallium antimonide studied by positron annihilation spectroscopy [PDF]
, 2003 Positron lifetime spectroscopy has been used to study the vacancy type defects in undoped gallium antimonide. Temperature dependent positron trapping into the VGarelated defect having a characteristic lifetime of 310ps was observed in the as-grown sample.
Hang, DS, Ling, CC, Ma, SK, Weng, HM
core +1 more source
Bioorthogonal Chemistry in Biomolecule Quantification: A Review of Reactions and Strategies
Chemistry – A European Journal, EarlyView.This review summarizes the application of catalyst‐free bioorthogonal reactions: Staudinger ligation, strain promoted azide alkyne cycloaddition, inverse electron‐demand Diels–Alder, and 2‐cyanobenzothiazole cysteine condensation in the semi‐quantitative and quantitative analysis of biomolecules.
Mingze Yang, Shiqi Wang
wiley +1 more source
Positronium in a liquid phase: formation, bubble state and chemical reactions
, 2012 This chapter reviews the following items: 1. Energy deposition and track structure of fast positrons: ionization slowing down, number of ion-electron pairs, typical sizes, thermalization, electrostatic interaction between e+ and its blob, effect of local
Byakov, Vsevolod M. +5 more
core +2 more sources
Nanosensors in Leukemia Management: Pioneering Real‐Time Biomarker Detection for Precision Oncology
Nano Select, EarlyView.This review highlights pioneering nanosensors designed for real‐time leukemia biomarker detection, integrating advanced nanomaterials such as liposomes, polymeric nanoparticles and quantum dots. It examines electrochemical, optical and magnetic detection mechanisms, the applications across AML, ALL, CML, and CLL subtypes, and clinical translation ...
Hamed Soleimani Samarkhazan +5 more
wiley +1 more source
physica status solidi (b), EarlyView.Vacancies in low‐dose ion‐implanted GaN are studied by positron annihilation. Depth profiles of the net donor concentration (ND) are close to those for implanted impurities, but ND is 2–3 times higher than concentrations of implanted ions. The origin of donor‐like defects is expected to be N‐vacancy‐related defects, and Ga‐vacancy‐type defects play a ...
Akira Uedono +6 more
wiley +1 more source
Nukleonika, 2015 Results of positron annihilation lifetime spectroscopy (PALS) and microscopic studies on simple microorganisms, brewing yeasts, are presented. Lifetime of ortho-positronium (o-Ps) were found to change from 2.4 to 2.9 ns (longer-lived component) for ...
Kubicz Ewelina +28 more
doaj +1 more source
On the positron annihilation spectroscopy and tensile behavior of COOH-MWCNT/epoxy nanocomposites [PDF]
Journal of Particle Science and TechnologyPositron Annihilation Lifetime Spectroscopy (PALS) is sensitive to the material voids/free volume on the atomic scale. For this reason, this method has been used as a unique technology to measure the free volume and structural defects in polymers in ...
Mohammad Koohkan +2 more
doaj +1 more source