Results 71 to 80 of about 832,952 (256)

Avaliação reológica de concretos refratários para projeção a úmido em aplicações siderúrgicas Rheological evaluation of steel-making wet-shotcrete refractory castables

Cerâmica, 2007
A crescente utilização de processos automatizados durante a etapa de bombeamento e na projeção de concretos refratários é o resultado do entendimento simultâneo das características microestruturais de empacotamento e da natureza reológica destes ...
F. A. O. Valenzuela, T. L. Dong, V. C. Pandolfelli   +2 more
doaj   +1 more source

Recent Advances in the Laser‐Based Fabrication and Applications of High‐Entropy Alloy Nanoparticles

MetalMat, EarlyView.
This review presents recent advances in the laser‐based fabrication of high‐entropy alloy nanoparticles, focusing on scalable, environmentally friendly, and compositionally tunable synthesis methods. It highlights the critical influence of laser parameters on nanoparticle size, phase, and morphology, enabling tailored properties for applications in ...
Bibek Kumar Singh, Rajesh Rawat, Archana Tiwari, Venugopal Rao Soma, Ajay Tripathi   +4 more
wiley   +1 more source

Are physiological oscillations physiological?

The Journal of Physiology, EarlyView., 2023
Abstract figure legend Mechanisms and functions of physiological oscillations. Abstract Despite widespread and striking examples of physiological oscillations, their functional role is often unclear. Even glycolysis, the paradigm example of oscillatory biochemistry, has seen questions about its oscillatory function.
Lingyun (Ivy) Xiong, Alan Garfinkel
wiley   +1 more source

Resistência à erosão de concretos refratários de alta alumina nanoligados Erosion resistance of nanobonded high-alumina refractory castables

Cerâmica, 2011
A avaliação do emprego de concretos refratários nanoligados em aplicações onde ocorre desgaste por erosão é de importante interesse devido aos estudos recentes que indicam esta rota como uma alternativa à substituição do cimento de aluminato de cálcio ...
V. A. A. dos Santos, E. Prestes, J. Medeiros, J. L. B. Veiga, V. C. Pandolfelli   +4 more
doaj   +1 more source

Epistemic diversity and the politics of knowledge in plant disease management: Insights from the Xylella fastidiosa epidemic in southern Italy

PLANTS, PEOPLE, PLANET, EarlyView.
Xylella fastidiosa is a major plant pathogen affecting crops such as grapes, citrus, almonds, and olives, with potentially severe consequences for agricultural production and rural livelihoods worldwide. This paper examines the conflict around the management of the X. fastidiosa outbreak affecting olive trees in southern Italy.
Fabio Gatti, David Ludwig, Phil Macnaghten   +2 more
wiley   +1 more source

Roughness Measurements at Small and Uneven Surfaces of Ceramic Foam Filters

Surface and Interface Analysis, EarlyView.
ABSTRACT This study investigated the possibility of roughness characterization of ceramic foam filters using a laser scanning microscope, examining the influence of magnification, measured area, cutoff wavelength (λc), measured roughness parameter, and position within the ceramic foam on the measured roughness data. Firstly, the effect of magnification
Claudia Voigt, Hans Laus, Jana Hubálková, Christos G. Aneziris   +3 more
wiley   +1 more source

The effect of aggregate aspect ratio and temperature on the fracture toughness of a low cement refractory concrete

Materials Research, 2003
This work investigated the influence of the aggregate's aspect ratio on the fracture behavior of a low cement aluminum silicate refractory castable treated at two different temperatures (110 °C and 1000 °C).
Laura Brum Prata, Walter Libardi, João Baptista Baldo   +2 more
doaj   +1 more source

Pulse Electrodeposited NiFeCoMoW High‐Entropy Alloy Electrode for Efficient Alkaline Water Electrolysis

Small, EarlyView.
A pulse‐electrodeposited NiFeCoMoW high‐entropy alloy grown on copper foam forms a binder‐free, hierarchical electrode for alkaline water splitting. The bifunctional catalyst achieves low overpotentials for hydrogen and oxygen evolution and enables efficient two‐electrode electrolysis, delivering 1.52 V at 10 mA cm−2 and 1.83 V at 1000 mA cm−2.
Ziyao Chen, Yiwei Sun, Mengqing Hu, Mingli Li, Kaidi Zhang, Wanhong Zhang, Zhong Zheng, Ruth Knibbe, Kaicai Fan, Lingbo Zong, Yuhai Dou, Yi Jia, Yun Wang, Huai Qin Fu, Porun Liu, Huijun Zhao   +15 more
wiley   +1 more source

Microstructural X-Ray Computed Tomography Investigation of the Defect Evolution in Refractory Castings Based on Andalusite

Ceramics
X-ray computed tomography (XRT) has gradually established its position as a non-destructive and, therefore, reproducible three-dimensional (3D) investigation technique, allowing for material- and geometry-independent applications.
Anita Razavi, Vanessa Hopp, Dominik Hahn, Almuth Sax, Peter Quirmbach   +4 more
doaj   +1 more source

Propriedades termo-mecânicas de concretos refratários ligados por sílica coloidal Thermo-mechanical properties of colloidal silica-containing castable

Cerâmica, 2007
Os cimentos de aluminatos de cálcio (CAC) são os ligantes hidráulicos mais utilizados em concretos refratários. No entanto, a presença de CaO em sua composição pode limitar seu uso em elevadas temperaturas nos sistemas Al2O3-SiO2 e Al2O3-MgO.
M. R. Ismael, F. A. O. Valenzuela, L. A. Polito, V. C. Pandolfelli   +3 more
doaj   +1 more source