Results 91 to 100 of about 425,854 (315)

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source

Ga-DOTA-E-[c(RGDfK)]2 positron emission tomography–computed tomography in the evaluation of hepatic hemangioendothelioma epithelioid

Rare Tumors, 2019
Hemangioendothelioma epithelioid is a rare tumor that originates in soft tissues. Imaging evaluation with conventional modalities (tomography and magnetic resonance) is difficult.
Irma Soldevilla-Gallardo, Sevastian S Medina-Ornelas, Jenny Davanzo, Roberto Pedrero-Piedras   +3 more
doaj   +1 more source

Characteristics of the elderly in high - resolution computed tomography lung densitometry

, 2004
To determine the characteristics of the elderly in high - resolution computed tomography (HRCT) lung densitometry, mean lung density (MLD) and relative area of the lungs showing attenuation values less than -950 HU (RA(950)) on HRCT were evaluated in ...
Hosaki, Yasuhiro, Tanizaki, Yoshiro, Ashida, Kozo, Fujii, Makoto, Iwagaki, Naofumi, Nagata, Takuya, Takata, Shingo, Yokoi, Tadashi, Mitsunobu, Fumihiro, Hamada, Masanori   +9 more
core   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Imaging slow failure in triaxially deformed Etna basalt using 3D acoustic-emission location and X-ray computed tomography

, 2007
We have deformed basalt from Mount Etna (Italy) in triaxial compression tests under an effective confining pressure representative of conditions under a volcanic edifice (40 MPa), and at a constant strain rate of 5 similar to 10(-6) s(-1).
Thompson, BD, Benson, PM, Young, RP, Vinciguerra, S, Meredith, PG   +4 more
core  

T positron emission tomography/computed tomography imaging

, 2019
OBJECTIVES: The use of Ga-prostate-specific membrane antigen positron emission tomography/computed tomography is spreading due to its clinical benefits.
Şengöz, Tarık, Şahin, Beyza, Gültekin, Aziz, Tarık Şengöz, Yüksel, Doğangün, Doğangün Yüksel, Aziz Gültekin, Beyza Şahin, Olga Yaylalı, Yaylalı, Olga   +9 more
core   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Attenuation correction of myocardial perfusion scintigraphy images without transmission scanning

, 2015
Attenuation correction is essential for reliable interpretation of emission tomography; however the use of transmission measurements to generate attenuation maps is limited by availability of equipment and potential mismatches between the transmission ...
Cade, SC
core  

A fast Bayesian reconstruction algorithm for emission tomography with entropy prior converging to feasible images

, 1990
The development and tests of an iterative reconstruction algorithm for emission tomography based on Bayesian statistical concepts are described. The algorithm uses the entropy of the generated image as a prior distribution, can be accelerated by the ...
Núñez de Murga, Jorge, 1955-, Llacer, Jorge   +1 more
core   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source