Results 1 to 10 of about 63,589 (182)

Dynamic recrystallization and microstructural evolution in 40CrNi2MoV steel during forging [PDF]

iScience
Summary: Reactor pressure vessel (RPV) studs require uniform microstructures for reliability. A strain-compensated Arrhenius constitutive model and dynamic recrystallization (DRX) model for 40CrNi2MoV steel were established via isothermal compression ...
Wei Zhu, Xiaohe Wang, Luoxing Li, Peng Cheng, Chenxi Shao, Decheng Wang, Feng Feng, Peng Zhou   +7 more
doaj   +2 more sources

Performance Evaluation of LTE/LTE-A DRX: A Markovian Approach

IEEE Internet of Things Journal, 2016
Long-term evolution (LTE)/long-term evolution advanced (LTE-A) are emerging communication technologies on the way toward 5G telecommunication systems. Ubiquitous adoption of connectivity in between different kinds of sensors, wearable devices, and other low-power equipment raises an importance of the energy-efficient wireless communications. In LTE/LTE-
Hawar Ramazanali, Alexey Vinel
exaly   +5 more sources

Nuclear and non-nuclear analytical techniques applied to pre-colonial archaeological ceramics from the upper Madeira River/Brazil (940 to 760 B.P)

Brazilian Journal of Radiation Sciences, 2023
This article presents the results of applying three archaeometric techniques in archaeological ceramics from the upper river Madeira region in Amazonia.
Angislaine Freitas Costa, Denise Maria Cavalcante Gomes, Casimiro S Munita, Rogério Bária, Michelle Mayumi Tizuka, Renato Kipnis, Shigueo Watanabe, José Fernando Diniz Chubaci   +7 more
doaj   +1 more source

Distribución y consumo de cuentas de fluorita y translúcidas en la península ibérica del VI al II milenios ANE

Trabajos de Prehistoria, 2020
Los minerales translúcidos fueron apreciados por las sociedades prehistóricas por su rareza, y fueron utilizados como elementos altamente simbólicos.
José Ángel Garrido-Cordero, Carlos P. Odriozola, Ana C. Sousa, Victor S. Gonçalves, João Luís Cardoso   +4 more
doaj   +1 more source

Semi-persistent RRC protocol for machine-type communication devices in LTE networks [PDF]

, 2015
In this paper, we investigate the design of a radio resource control (RRC) protocol in the framework of long-term evolution (LTE) of the 3rd Generation Partnership Project regarding provision of low cost/complexity and low energy consumption machine-type
Imran, Muhammad Ali, Qi, Yinan, Quddus, Atta Ul, Tafazolli, Rahim   +3 more
core   +2 more sources

Proceso de molturación mecánica en medio seco, húmedo y criogénico de polvo de hierro dúctil nanoestructurado

Revista de Metalurgia, 2011
El principal objetivo de este estudio, es obtener una efectiva reducción del tamaño de partícula y de grano de un polvo de hierro nanoestructurado mediante la molturación mecánica en diferentes medios de molienda.
N. Cinca, E. Hurtado, I. G. Cano, J. M. Guilemany   +3 more
doaj   +1 more source

On the modified kinetics model describing the dynamic recrystallization behavior during hot deformation of Incoloy 925

Journal of Materials Research and Technology, 2023
The isothermally hot compression tests of Incoloy 925 were conducted over a temperature range of 900–1150 °C and strain rate of 0.01–10 s−1 to investigate the dynamic recrystallization (DRX) kinetics behavior and its effect on the microstructure ...
Yulong Zhu, Yu Cao, Fei Yuan, Junhao Ma, Qubo He, Rui Luo, Xuhong Jia, Quanyi Liu, Jun Xiao   +8 more
doaj   +1 more source

Dynamic recrystallization mechanisms and twining evolution during hot deformation of Inconel 718 [PDF]

, 2016
The hot deformation behavior of an IN718 superalloy was studied by isothermal compression tests under the deformation temperature range of 950–1100 °C and strain rate range of 0.001–1 s-1 up to true strains of 0.05, 0.2, 0.4 and 0.7.
Aghaie-Khafri, M., Azarbarmas, M., Cabrera Marrero, José M., Calvo Muñoz, Jessica   +3 more
core   +2 more sources

Análisis de perfiles de difracción de una aleación Cu –2 % en peso Cr –6 % en peso Mo, aleada mecánicamente

Revista de Metalurgia, 2008
A través del análisis de perfiles de difracción de rayos X es posible obtener información válida de la estructura y propiedades de los materiales. Es una poderosa herramienta para caracterización de microestructuras de materiales nanoestructurados. En el
C. Aguilar, V. Martínez, S. Ordóñez, O. Pávez, L. Valderrama   +4 more
doaj   +1 more source

Variscita y ámbar en el Neolítico gallego. Análisis arqueométrico del collar del túmulo 1 de Chousa Nova, Silleda (Pontevedra, España)

Trabajos de Prehistoria, 2011
La excavación del túmulo 1 de Chousa Nova, Silleda (Pontevedra), proporcionó unos resultados sorprendentes. Aunque muy deteriorado, por diferentes factores, conservaba evidencias de una gran complejidad constructiva.
Salvador Domínguez-Bella, María José Bóveda   +1 more
doaj   +1 more source