Results 101 to 110 of about 1,054,677 (325)

Correlacion entre metodos de analisis de Zn disponible en cuatro ordenes de suelos de Costa Rica

open access: yesAgronomía Costarricense, 2001
Se realizo una comparación entre métodos analisis del Zn disponible en 4 ordenes de sue- Analytilos de Costa Rica (Ultisoles, Vertisoles, Andisoles Inceptisoles, 25 de c/u), utilizando las siguientes soluciones extractoras: Olsen Modificado, Meh ...
Eloy Molina, Elemer Bornemisza
doaj  

Hydrographic parameters and distribution of dissolved Cu, Ni, Zn and nutrients near Jeddah desalination plant

open access: yesOpen Chemistry, 2018
The development of safe desalination plants with low environmental impact is as important an issue as the supply of drinking water. The desalination plant in Jeddah (Saudi Arabia, Red Sea coast) produces freshwater from seawater by multi-stage flash ...
Fallatah Mohammad M.   +5 more
doaj   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

Ảnh hưởng của nồng độ Zn, Nb đến nhiệt độ thiêu kết và các tính chất của hệ gốm áp điện Pb0,96Sr0,04(Zr53Ti47)1-x(Zn1/3Nb2/3)xO3

open access: yesTạp chí Khoa học và Công nghệ, 2023
Bài báo nghiên cứu ảnh hưởng của nồng độ Zn, Nb (ZN) đến nhiệt độ thiêu kết và các tính chất của hệ gốm áp điện Pb0,96Sr0,04(Zr53Ti47)1-x(Zn1/3Nb2/3)xO3 (PSZT-ZN), với x = 0,0 – 2,0.
Nguyễn Văn Thịnh   +3 more
doaj  

Zn uptake behavior of rice genotypes and its implication on grain Zn biofortification

open access: yes, 2016
Understanding Zn uptake dynamics is critical to rice grain Zn biofortification. Here we examined soil Zn availability and Zn uptake pathways as affected by genotype (high-grain Zn varieties IR69428 and IR68144), Zn fertilization and water management in ...
Johnson-Beebout, Sarah E   +4 more
core   +1 more source

Optimization of the Production of Rubber Compounds Using Mathematical Models

open access: yesAdvanced Engineering Materials, EarlyView.
Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle   +7 more
wiley   +1 more source

Ontology‐Aligned Structuring and Reuse of Multimodal Materials Data and Workflows Toward Automatic Reproduction

open access: yesAdvanced Engineering Materials, EarlyView.
Reproduction of stacking fault energy calculations from literature with a semi‐automated large language model‐assisted extraction procedure: extraction of simulation protocol, atomistic structures, computational parameters, and reported results, ontology alignment, knowledge graph construction and, finally, recomputation forvalidation.
Sepideh Baghaee Ravari   +5 more
wiley   +1 more source

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

open access: yesAdvanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer   +4 more
wiley   +1 more source

Microstructure of Al-Zn and Zn-Al Alloys

open access: yesCroatica Chemica Acta, 2009
The change of microstructure of the title alloys with concentration, temperature and applied thermal treatment was studied in situ by XRD. The alloys, having the Zn atomic fraction, x(Zn), from 0.03 to 0.62, were subjected to: (i) rapid quenching from a temperature, Tt, higher than the solid-solution tem-perature, Tss, in water at RT (samples WQ); (ii)
Skoko, Željko   +2 more
openaire   +7 more sources

Zn-fortified cereal grains in field-grown barley by enhanced root cytokinin breakdown

open access: yes, 2018
Zinc (Zn) is an essential element in human nutrition. The concentration of Zn in cereals, which is a staple food in developing countries, is often too low thus contributing to Zn malnutrition in nearly two billion people worldwide.
Petr Galuszka (157796)   +2 more
core   +1 more source

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