Results 41 to 50 of about 573,896 (347)

Element Analysis of Small and even Smaller Objects by ICPMS and LA-ICPMS

CHIMIA, 2014
Inductively coupled plasma mass spectrometry is increasingly used for non-traditional applications such as the analysis of solids at high spatial resolution when combined with laser ablation or the analysis of engineered nanoparticles.
Olga Borovinskaya, Marcel Burger, Luca Flamigni, Sabrina Gschwind, Daniel Tabersky, Hao A. O. Wang, Bodo Hattendorf, Joachim Koch, Detlef Günther   +8 more
doaj   +1 more source

Isolation of $^{236}$U and $^{239,240}$Pu from seawater samples and its determination by Accelerator Mass Spectrometry [PDF]

Talanta, Volume 178, 2018, Pages 202-210
In this work we present and evaluate a radiochemical procedure optimised for the analysis of $^{236}$U and $^{239,240}$Pu in seawater samples by Accelerator Mass Spectrometry (AMS). The method is based on Fe(OH)$_3$ co-precipitation of actinides and uses TEVA and UTEVA extraction chromatography resins in a simplified way for the final U and Pu ...
arxiv   +1 more source

Chemical Partitioning at Crystalline Defects in PtAu as a Pathway to Stabilize Electrocatalysts [PDF]

arXiv, 2022
Dissolution of electrocatalysts during long-term and dynamic operation is a challenging problem in energy conversion and storage devices such as fuel cells and electrolyzers. To develop stable electrocatalysts, we adopt the design concept of segregation engineering, which uses solute segregation prone to electrochemical dissolution at internal defects,
arxiv  

The Viability of the Refractory High‐Entropy Alloy AlMo0.5NbTa0.5TiZr for High‐Temperature Structural Applications

Advanced Engineering Materials, EarlyView.
Refractory high‐entropy alloys have attracted substantial attention for future ultrahigh‐temperature structural applications. Here the progression of key phase transformations in AlMo0.5NbTa0.5TiZr is established and correlated to the mechanical performance, highlighting the importance of the B2 phase.
George J. Wise, Nicole L. Church, Hon Tong Pang, Robert P. Thompson, Howard J. Stone, Nicholas G. Jones   +5 more
wiley   +1 more source

Characterisation of Silicon Photomultipliers for Liquid Xenon Detectors [PDF]

, 2018
Silicon Photomultipliers (SiPMs) are considered as a solid-state sensor alternative to photomultiplier tubes in experiments using liquid xenon (LXe) as a radiation detection medium. The main requirements are single-photon detection of the vacuum ultraviolet scintillation light from LXe at 178$\,$nm with high resolution and detection efficiency and low ...
arxiv   +1 more source

Rational Engineering of Nanostructured AgM (M = Au, Pt, Pd) Bimetallic Electrodes via Galvanic Replacement for Glycerol Electrolysis

Advanced Engineering Materials, EarlyView.
This study demonstrates the feasibility of fabricating free‐standing carbon paper electrodes by electroplating and galvanic replacement. Nanostructured AgM (M = Au, Pt, Pd) bimetallic catalysts are directly grown on the electrode substrate, which exhibit good performance for glycerol electrolysis, a sustainable approach for the co‐production of green ...
Hui Luo, Maria‐Magdalena Titirici
wiley   +1 more source

Iron Redox Speciation Analysis Using Capillary Electrophoresis Coupled to Inductively Coupled Plasma Mass Spectrometry (CE-ICP-MS)

Frontiers in Chemistry, 2019
Neuronal iron dyshomeostasis occurs in multiple neurodegenerative diseases. Changes in the Fe(II)/Fe(III) ratio toward Fe(II) is closely related to oxidative stress, lipid peroxidation, and represents a hallmark feature of ferroptosis.
Bernhard Michalke, Desiree Willkommen, Vivek Venkataramani, Vivek Venkataramani   +3 more
doaj   +1 more source

High precision half-life measurement of $^{147}$Sm $α$ decay from thin-film sources [PDF]

, 2017
An investigation of the {\alpha}-decay of $^{147}$Sm was performed using an ultra low-background Twin Frisch-Grid Ionisation Chamber (TF-GIC). Four natural samarium samples were produced using pulsed laser deposition in ultra high vacuum. The abundance of the $^{147}$Sm isotope was mea- sured using inductively coupled plasma mass spectrometry.
arxiv   +1 more source

Gemtelligence: Accelerating Gemstone classification with Deep Learning [PDF]

arXiv, 2023
The value of luxury goods, particularly investment-grade gemstones, is greatly influenced by their origin and authenticity, sometimes resulting in differences worth millions of dollars. Traditionally, human experts have determined the origin and detected treatments on gemstones through visual inspections and a range of analytical methods.
arxiv  

2H‐Au Nanosheet‐Templated Growth of PdFe for Electrocatalytic Methanol Oxidation

Advanced Functional Materials, EarlyView.
2H‐to‐face‐centered cubic (fcc) phase transformation of 2H‐Au happens when PdFe alloy epitaxially grows on 2H‐Au nanosheets (NSs), forming 2H/fcc Au@PdFe NSs, and the 2H/fcc phase ratio in 2H/fcc Au@PdFe NSs can be tuned correspondingly by changing the Pd/Fe atomic ratio.
Jie Wang, An Zhang, Wenxin Niu, Guigao Liu, Xichen Zhou, Lixin Wang, Xiaozhi Liu, Lujiang Li, Zijian Li, Li Zhai, Qi Yang, Biao Huang, Qingbo Wa, Qinbai Yun, Hongfei Cheng, Yiyao Ge, Jingtao Huang, Zhaoning Hu, Bo Chen, Qinyong Zhang, Zhanxi Fan, Lin Gu, Hua Zhang   +22 more
wiley   +1 more source