Results 131 to 140 of about 48,339 (281)

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Denisova Admixture and the First Modern Human Dispersals into Southeast Asia and Oceania

, 2011
It has recently been shown that ancestors of New Guineans and Bougainville Islanders have inherited a proportion of their ancestry from Denisovans, an archaic hominin group from Siberia.
Delfin, Frederick, Kircher, Martin, Ko, Ying-Chin, Naruya Saitou, Jinam, T., Andreas Wollstein, Albert Min-Shan Ko, Saitou, N., Kayser, M. ; https://orcid.org/, Stoneking, M, Saitou, N, Kircher, M., Pääbo, S. ; https://orcid.org/, Svante Pääbo, Jinam, TA, Stoneking, Mark, Patterson, N, Pääbo, Svante, Nandineni, Madhusudan R., Wollstein, A., Wollstein, Andreas, Madhusudan R. Nandineni, Phipps, M., Pugach, I. ; https://orcid.org/, Ko, YC, Phipps, Maude E., Nick Patterson, Kircher, M, David Reich, Patterson, Nick, Paabo, S, Delfin, F, Patterson, N., Ko, Y., Nandineni, M. ; https://orcid.org/, Stoneking, M. ; https://orcid.org/, Pugach, Irina, Reich, D, Manfred Kayser, Phipps, ME, Maude E. Phipps, Reich, D., Mark Stoneking, Martin Kircher, Frederick Delfin, Saitou, Naruya, Timothy A. Jinam, Nandineni, MR, Delfin, F. ; https://orcid.org/, Pugach, I, Jinam, Timothy A., Ko, A. ; https://orcid.org/, Reich, David, Irina Pugach, Ko, AMS, Ying-Chin Ko, Kayser, Manfred, Ko, Albert Min-Shan   +57 more
core   +1 more source

Genetic admixture and diversity in Thai domestic chickens revealed through analysis of Lao Pa Koi fighting cocks. [PDF]

PLoS One, 2023
Wattanadilokcahtkun P, Chalermwong P, Singchat W, Wongloet W, Chaiyes A, Tanglertpaibul N, Budi T, Panthum T, Ariyaraphong N, Ahmad SF, Lisachov A, Muangmai N, Nunome M, Han K, Matsuda Y, Duengkae P, Srikulnath K.   +16 more
europepmc   +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

The role of management decisions in subspecies hybridization across wild turkey occupied range

Wildlife Society Bulletin
The expanded geographic range and recovery of wild turkey (Meleagris gallopavo) would not have been possible without management actions that included introducing and translocating individuals across North America.
Amanda K. Beckman, Sarah A. Hamer, Gil G. Rosenthal, Leonard A. Brennan, Zach B. Hancock   +4 more
doaj   +1 more source

Comparative Genomic and Transcriptomic Analyses Reveal the Impacts of Genetic Admixture in Kazaks, Uyghurs, and Huis. [PDF]

Mol Biol Evol, 2023
Pan Y, Wen J, Ning Z, Yuan Y, Liu X, Yang Y, Guan Y, Lu Y, Mamatyusupu D, Xu S.   +9 more
europepmc   +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

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Optimization of the Production of Rubber Compounds Using Mathematical Models

Advanced Engineering Materials, EarlyView.
Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle, Andreas Limper, Ulrich Giese, Carlos Lucke, Mario Beiner, Christoph Gögelein, Lisa Leuchtenberger‐Engel, Christian Hopmann   +7 more
wiley   +1 more source