Results 31 to 40 of about 35,932 (299)

Increasing spring temperatures favor oak seed production in temperate areas [PDF]

Scientific Reports, 2017
AbstractThe changes in reproductive phenology (i.e. timing of flowering and fruiting) observed in recent decades demonstrate that tree reproduction has already been altered by climate change. However, understanding the impact of these changes in reproductive success and fitness remains a major challenge for ecologists.
Caignard, Thomas, Kremer, Antoine, Firmat, Cyril, Nicolas, Manuel, Venner, Samuel, Delzon, Sylvain   +5 more
openaire   +7 more sources

Parallel Tempering: Theory, Applications, and New Perspectives [PDF]

, 2005
We review the history of the parallel tempering simulation method. From its origins in data analysis, the parallel tempering method has become a standard workhorse of physiochemical simulations.
Alexander-Katz, Auer, Banaszak, Beauvais, Bedrov, Bertrand, Bogarad, Brunger, Bunker, Calco, Calvo, Cecchini, Chen, Chen, Chuang, Ciobanu, Coluzza, David J. Earl, DeWitte, Dova, Dozastakis, Dugourd, Earl, Ekdawi-Sever, Falcioni, Falcioni, Falcioni, Faller, Fasnacht, Favre-Nicolin, Feig, Fenwick, Frenkel, Fukunishi, Garcia, Garcia, Garcia-Cuesta, Gnanakaran, Habeck, Haliloglu, Hansmann, Houdayer, Im, Im, Ishikawa, Jang, Jas, Katzgraber, Katzgraber, Katzgraber, Katzgraber, Kihara, Kofke, Kofke, Kofke, Kokubo, Kokubo, Kone, Kozumi, Lopez, Manousiouthakis, Mastny, Merlitz, Michael W. Deem, Mitsutake, Mitsutake, Murata, Nguyen, Nymeyer, Okamoto, Ortiz, Pagan, Penna, Rabenstein, Rathore, Rathore, Rathore, Rathore, Rathore, Sanbonmatsu, Sanbonmatsu, Schug, Sengupta, Shin, Sugita, Sugita, Sujita, Swendsen, Tsallis, Vlugt, Vreede, Wang, Whitfield, Wu, Yan, Yan, Yan, Yang, Zavalij, Zhou, Zhou, Zhou, Zhou, Zhou   +103 more
core   +1 more source

Effects of Tempering on the Microstructure and Properties of a High-Strength Bainite Rail Steel with Good Toughness

Metals, 2018
An advanced bainite rail with high strength–toughness combination was produced in a steel mill and the effects of tempering on the microstructure and properties of the bainite rail steel were investigated by optical microscopy, transmission ...
Min Zhu, Guang Xu, Mingxing Zhou, Qing Yuan, Junyu Tian, Haijiang Hu   +5 more
doaj   +1 more source

Effect of heat treatment on microstructure and mechanical properties of low-alloy wear-resistant steel NM450

Materials Research Express, 2021
In this study, we investigated the effects of the quenching and tempering temperatures on the microstructure and mechanical properties of low-alloy wear-resistant steel NM450. The quenching temperatures were 870 °C–1200 °C, and held for 36 min.
Liang Liang, Yan Lixin, Li Guanghui, Cao Yi, Deng Xiangtao, Wang Zhaodong   +5 more
doaj   +1 more source

Carbon cycling in temperate grassland under elevated temperature

Ecology and Evolution, 2016
AbstractAn increase in mean soil surface temperature has been observed over the last century, and it is predicted to further increase in the future. The effect of increased temperature on ecosystem carbon fluxes in a permanent temperate grassland was studied in a long‐term (6 years) field experiment, using multiple temperature increments induced by IR ...
Jansen-Willems, Anne B., Lanigan, Gary, Grunhage, Ludger, Muller, Christoph   +3 more
openaire   +4 more sources

Optimized parallel tempering simulations of proteins [PDF]

, 2006
We apply a recently developed adaptive algorithm that systematically improves the efficiency of parallel tempering or replica exchange methods in the numerical simulation of small proteins.
Hansmann, Ulrich H. E., Trebst, Simon, Troyer, Matthias   +2 more
core   +2 more sources

Nanoscale austenite reversion through partitioning, segregation, and kinetic freezing: Example of a ductile 2 GPa Fe-Cr-C steel

, 2012
Austenite reversion during tempering of a Fe-13.6Cr-0.44C (wt.%) martensite results in an ultrahigh strength ferritic stainless steel with excellent ductility.
Choi, P., Jiménez, J. A., Ponge, D., Raabe, D., Wittig, J., Yuan, L.   +5 more
core   +1 more source

Exploring the low temperature tempering range of low alloy quenched and tempered steels

Procedia Structural Integrity, 2019
Abstract It is well known that quenched and tempered alloy steel components with ultimate tensile strength in excess of 1400 MPa are seldom employed as mechanical components, due to their not adequate ductility, as ascertained by multiple researches performed during World War II and soon after.
Firrao, D., Matteis, P., De Sario, A.
openaire   +4 more sources

Significant efficiency improvement of conventional tempering by a novel flash tempering technique

Journal of Materials Research and Technology, 2023
A flash tempering process has been demonstrated for low-carbon low-alloy lath martensite, which includes heating the sample to 750 °C (Ac1: 752 °C), dwelling at 750 °C for 2 s, and quenching directly to room temperature.
Chao Ding, Gang Niu, Enmao Wang, Jinxu Liu, Na Gong, Hongfei Liu, Yong Wang, Xinpan Yu, Xuelin Wang, Chengjia Shang, Huibin Wu   +10 more
doaj   +1 more source

Hydrogen Diffusivity and Hydrogen Traps Behavior of a Tempered and Untempered Martensitic Steel

Hydrogen
The effect of tempering temperature and tempering time on the density of hydrogen traps, hydrogen diffusivity, and microhardness in a vanadium-modified AISI 4140 martensitic steel was determined. Tempering parameters were selected to activate the second,
Edgar López-Martínez, Samuel Eduardo Salud-Ordon, Octavio Vázquez-Gómez, Miguel Iván Dávila-Pérez, Julio C. Villalobos, Jesus Israel Barraza-Fierro   +5 more
doaj   +1 more source