Results 21 to 30 of about 131,815 (304)

The effect of milling time on the preparation of an aluminum matrix composite reinforced with magnetic nanoparticles

Heliyon, 2023
Powder metallurgy methods, particularly ball milling, are up-and-coming in tuning metal matrix composite (MMC) properties. This study uses ball milling at various milling times to create an aluminum matrix composite (AMC) reinforced with magnetite ...
Ayman Elsayd, Ahmed Y. Shash, Hisham Mattar, Per A. Löthman, Mohamed E. Mitwally   +4 more
doaj   +1 more source

Soil hydromorphy and aluminum saturation shape tree community composition in a riparian ecotone, Paraná, Brazil

Brazilian Journal of Biology
Riparian ecotones host sharp hydrological-edaphic gradients that can restructure tree communities. We tested how soil hydromorphy and related attributes shape floristic composition in a 7.6-ha ecotone on the eastern boundary of Iguaçu National Park ...
H. M. Munhoz, B. S. Francisco, M. B. Remor, J. Cordeiro, S. C. Sampaio, L. G. Temponi   +5 more
doaj   +1 more source

Crescimento em vasos, de cultivares de soja e de trigo em função da saturação de alumínio Tolerance of soybean and wheat varieties in sub-soil high in exchangeable aluminum

Scientia Agricola, 1995
Um dos problemas que a acidez do solo causa às plantas é concentrar alguns elementos químicos em nível tóxico, como por exemplo de alumínio (Al) e manganês.
H.A.A. Mascarenhas, R.T. Tanaka
doaj   +1 more source

X-ray measurements of growth rates at a gas interface accelerated by shock waves [PDF]

, 1996
A new experimental technique to measure the density of a high atomic number gas at a shock-accelerated interface has been developed and demonstrated.
Bonazza, R., Sturtevant, B.
core   +1 more source

Visualization of Aluminum Dust Flame Propagation in a Square-Section Tube

Chemical Engineering Transactions, 2018
Metallic dust explosion is a challenging research topic. One key point of investigation is the flame propagation velocity, which can be determined experimentally by direct visualization of the explosions.
Clement Chanut, Frederic Heymes, Pierre Lauret, Pierre Slangen   +3 more
doaj   +1 more source

Efficiency of Energy Conversion in Thermoelectric Nanojunctions

, 2009
Using first-principles approaches, this study investigated the efficiency of energy conversion in nanojunctions, described by the thermoelectric figure of merit $ZT$. We obtained the qualitative and quantitative descriptions for the dependence of $ZT$ on
Baheti K., Beebe J. M., Chen Y. C., Chen Y. C., Chen Y. C., Cuevas J. C., Di Ventra M., Dubi Y., Finch C. M., Galperin M., Kaun C. C., Ke S. H., Kobayashi N., Lang N. D., Lang N. D., Liu Y. S., Ludoph B., Ma C. L., Malen J. A., Markussen T., Patton K. R., Paulsson M., Pauly F., Reddy P., Smit R. H. M., Tao N. J., Thygesen K. S., Wang B., Wang W., Wold D. J., Yang Z., Zhao J., Zheng X.   +32 more
core   +1 more source

Intergranular to Intragranular Pitting Corrosion Transition Mechanism of Sensitized AA5083 at 150 °C

Metals, 2020
Intergranular corrosion (IGC) and pitting transition caused by grain boundary β-phase saturation of aluminum alloy AA5083 sensitized at 150 °C was investigated in 3.5 wt% NaCl solution.
Jacob Ress, Ulises Martin, Juan Bosch, Rajeev K. Gupta, David M. Bastidas   +4 more
doaj   +1 more source

Performance of grain sorghum hybrids in soils with low and high aluminum saturation

Pesquisa Agropecuária Tropical, 2018
The presence of aluminum (Al3+) in acidic soils is one of the main causes of low crop yield, since it inhibits the root growth, thus affecting the nutrients and water uptake by plants.
Crislene Vieira dos Santos, Nataly Sousa Silva, Jurandir Vieira Magalhães, Robert Eugene Schaffert, Cícero Beserra de Menezes   +4 more
doaj   +1 more source

Cadmium concentration in cocoa beans produced in agroforestry systems of small producers in Panama

Spanish Journal of Agricultural Research
Aim of study: To calculate Cd concentration in cocoa plants and evaluate its relationship with available Cd and other soil properties. Area of study: Almirante, Bocas del Toro province, Panama, in 2020-2021.
Jhon A. Villalaz-Pérez, Fernando Casanoves, José E. Villarreal-Núñez, Adolfo Santo-Pineda, Abiel Gutiérrez-Lezcano, Agustín Merino   +5 more
doaj   +1 more source

A Scanning Transmission X-ray Microscopy Study of Cubic and Orthorhombic C₃A and Their Hydration Products in the Presence of Gypsum. [PDF]

, 2016
This paper shows the microstructural differences and phase characterization of pure phases and hydrated products of the cubic and orthorhombic (Na-doped) polymorphs of tricalcium aluminate (C₃A), which are commonly found in traditional Portland cements ...
Chae, Sejung Rosie, Geng, Guoqing, Kirchheim, Ana Paula, Monteiro, Paulo JM, Rheinheimer, Vanessa, Rodríguez, Erich D   +5 more
core   +3 more sources