Results 61 to 70 of about 256,645 (286)

Aspectos más significativos en la revisión de proyectos de cimientos y estructuras de edificación

Informes de la Construccion, 2000
En el presente artículo se muestran todos aquellos aspectos que se consideran importantes en la revisión del proyecto de la cimentación y la estructura de un edificio.
Jesús Gómez Hermoso
doaj   +1 more source

Conceitos de “prática” no campo educacional: história conceitual e teoria das representações sociais em foco

Revista Diálogo Educacional, 2020
Neste artigo pretendemos empreender uma reflexão sobre os conceitos de prática (social, educativa, pedagógica, docente) por meio da história conceitual e das contribuições possíveis advindas da Teoria das Representações Sociais (TRS).
André Augusto Diniz Lira, Lúcia Villas Bôas   +1 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Experimental Study on High Performance Mortar Using Local Materials and Industrial Wastes

Tạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ, 2015
Experimental study on high performance mortar using local materials and industrial wastes such as fly ash or FCC results in reducing the price of construction materials and contributing to environmental protection.
Nguyễn Đình Hùng
doaj  

Phase-field-crystal model for fcc ordering

, 2010
We develop and analyze a two-mode phase-field-crystal model to describe fcc ordering. The model is formulated by coupling two different sets of crystal density waves corresponding to and reciprocal lattice vectors, which are chosen to form triads so as
Adland, Ari, Karma, Alain, Wu, Kuo-An
core   +1 more source

Microstructure Design of Steel‐Spinel Composites via Spark Plasma Sintering Process

Advanced Engineering Materials, EarlyView.
This study illustrates how spark plasma sintering at reduced oxygen partial pressure enables controlled formation of steel‐spinel composites through tailored redox reactions and cation exchange. Comparison of the MgO–Fe2O3, steel–(MgO+Cr2O3), and steel–(MgO+Fe2O3) systems shows how oxygen activity and interface chemistry govern spinel formation, phase ...
Mahnaz Mehdizadehlima, Christian Schimpf, Stefan Martin, Olga Fabrichnaya, David Rafaja   +4 more
wiley   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source

Heterogeneous kinetics of AKT signaling in individual cells are accounted for by variable protein concentration

Frontiers in Physiology, 2012
In most solid cancers, cells harboring oncogenic mutations represent only a sub-fraction of the entire population. Within this sub-fraction the expression level of mutated proteins can vary significantly due to cellular variability limiting the ...
Rene eMeyer, Lorenza A D`Alessandro, Sandip eKar, Sandip eKar, Bernhard eKramer, Bin eShe, Daniel eKaschek, Bettina eHahn, David eWrangborg, Johan eKarlsson, Mats eKvarnstrom, Mats eJirstrand, Wolf-Dieter eLehmann, Jens eTimmer, Jens eTimmer, Jens eTimmer, Jens eTimmer, Jens eTimmer, Thomas eHöfer, Thomas eHöfer, Ursula eKlingmüller, Ursula eKlingmüller   +21 more
doaj   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Fertility Rates in Cambodia: A Bumpy Road

Fertility & Reproduction
In ancient times, Cambodia was home to one of the largest city complexes on earth, Angkor. At its apogee in the 12th century, the whole city of Angkor expanded over [Formula: see text] hectares and had a population of 1–2 million people, which was only ...
Sean Sokteang, Pichetra Ou, Paul Pirtea, Dominique de Ziegler   +3 more
doaj   +1 more source