Results 131 to 140 of about 34,112 (314)

ZONATION OF PHLOGOPITE OF CARBONATITE-PEGMATITES OF THE BULDYM DEPOSIT OF THE VISHNEVYE MOUNTAINS (SOUTH URALS) [PDF]

Минералогия, 2017
In a plate 19 cm in size from the columnar crystal of phlogopite Buldym deposit in the Southern Urals, we studied the composition of alternating greenish-brown, yellowish-brown and darker brown areas by electron-probe microanalysis.
V.I. Popova, V.A. Kotlyarov, I.L. Nedosekova, V.A. Popov   +3 more
doaj  

“Flames Over Persepolis”: New Scientific Evidence Supporting Historical Perspectives

Archaeometry, EarlyView.
ABSTRACT This study investigates the burning of Persepolis Terrace, historically attributed to Alexander III in 330 bce. A review of classical accounts and excavation reports, combined with diagnostic surveys, confirms the fire's historicity and provides novel insights.
Maria Letizia Amadori, Ileana De Giuseppe, Fabrizio Frontalini, Luca Pellegrino, Richard W. Jordan, Pierfrancesco Callieri, Emad Matin, Alireza Askari Chaverdi, Hamid Fadaei, Valeria Mengacci, Fulvio Fantino   +10 more
wiley   +1 more source

Non-destructive trace element microanalysis of as-received cometary nucleus samples using synchrotron x ray fluorescence [PDF]

The Synchrotron X ray Fluorescence (SXRF) microprobe at the National Synchrotron Light Source (NSLS), Brookhaven National Laboratory, will be an excellent instrument for non-destructive trace element analyses of cometary nucleus samples.
Sutton, S. R.
core   +1 more source

Electron probe microanalysis in the study of gallstones. [PDF]

, 1977
Jenny Been, P. M. Bills, D. Lewis
openalex   +1 more source

Six Ca‐Mg‐Fe Carbonate Reference Materials for In Situ Measurement of Oxygen and Carbon Isotope Ratios

Geostandards and Geoanalytical Research, EarlyView.
Key Points Six new Ca‐Mg‐Fe carbonate reference materials are available to the global geochemical community for calibrating oxygen and carbon isotope ratios by SIMS. Significant compositional matrix effects were observed in the dolomite‐ankerite and magnesite‐siderite series during SIMS analysis. Compositional matrix effects correlate with Fe variation.
Maria Rosa Scicchitano, Chris Harris, Julie Luyt, Andreas Pack, Tommaso di Rocco, Torsten Vennemann, Franziska D.H. Wilke, Anja M. Schleicher, Johannes Glodny, Kimberly T. Tait, Simon Philippo   +10 more
wiley   +1 more source

Accuracy in quantitative electron-probe microanalysis

Journal of Research of the National Bureau of Standards, 1988
Electron probe microanalysis (EPMA) is based on the interpretation of x-ray spectra emitted by specimens which were exposed to a focused, accelerated electron beam. One of the attractions of this technique is the simplicity of the x-ray emission line spectra which is particularly striking if we do not pay attention to the fine details of x-ray ...
openaire   +1 more source

Influence of Dual Heat Treatment on the Metallurgy and Mechanical Behaviour of Diamond‐Like Carbon–Coated NiTi Rotary Systems: A Multimethod Investigation

International Endodontic Journal, EarlyView.
ABSTRACT Aim To investigate how the application of dual heat treatment during the manufacturing process influences the mechanical performance (flexibility, cyclic fatigue resistance, torsional strength, bending, buckling and cutting efficiency) of rotary nickel‐titanium endodontic instruments. Methodology Rainbow One (n = 58) and Rainbow Ultra (n = 58)
Emmanuel João Nogueira Leal Silva, Thyago Oliveira Cardoso, Jorge N. R. Martins, Francisco Manuel Braz Fernandes, Victor Talarico Leal Vieira, Marco A. Versiani   +5 more
wiley   +1 more source

Microstructure, wear and corrosion behaviors of TC21 titanium alloy by solid powder-packing boriding and aluminizing

Journal of Materials Research and Technology
In this work, TC21 titanium alloy was treated using solid powder-packing infiltration method with single boriding, single aluminizing and first-stage boriding and second-stage aluminizing (B–Al).
Yuwei Guo, Ziqiang Wang, Na Li, Shankai Yang, Yuyu Wu, Yonghua Duan, Ancang Yang, Lishi Ma, Shanju Zheng, Yunping Li   +9 more
doaj   +1 more source

Determining bismuth content in GaAsBi alloys by energy‐dispersive X‐ray spectroscopy: A case study with multiple sets of k*‐factors for analytical transmission electron microscopy

Journal of Microscopy, EarlyView.
Abstract Measuring the bismuth (Bi) content of ternary gallium arsenide bismuthide (GaAsBi) alloys is important because it sensitively influences their bandgap, and Bi is known to segregate vertically to the surface and sometimes also laterally during growth, so elemental distribution maps need to be quantified.
T. Walther
wiley   +1 more source

The element enrichment behavior during the aging treatment of PH13–8Mo steel and its influence on the evolution of microstructures and mechanical properties

Journal of Materials Research and Technology
The element enrichment behavior during the aging treatment of PH13–8Mo steel and its influence on the evolution of microstructure and mechanical properties were systematically investigated via scanning electron microscopy (SEM), electron backscatter ...
Haitao Xu, Chen Sun, Qianwei Guo, Kaiyan Song, Hanghang Liu, Yinuo Du, Leitao Wang, Xinyu Ru, Ziwen Yan, Yanfei Cao, Hongwei Liu, Paixian Fu   +11 more
doaj   +1 more source