Results 101 to 110 of about 2,284 (265)

Determinación de metales, fenoles totales y flavonoides totales en extractos de las hojas de Petiveria alliacea L. (anamú)

Revista CENIC Ciencias Químicas, 2015
Petiveria alliacea L. (anamú) es una planta ampliamente utilizada en la medicina tradicional, que posee una composición química peculiar determinada por la abundancia de compuestos sulfurados.
Sandra Sariego-Frómeta, Jorge Erick Marin-Morán, Ania Ochoa-Pacheco, Damari Rivero-Breff, Orlando Ramón Sariego-Tamayo   +4 more
doaj  

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

Advanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo, Daniela Winsley Valereto Friozi, Vinícius de Oliveira, Marcia Cristina Branciforti   +3 more
wiley   +1 more source

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

Advanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim, Sohee John Yoon, Yong‐Lae Park   +2 more
wiley   +1 more source

Estudio de la calidad del suelo y presencia de metales potencialmente tóxicos en escenarios de relevancia en salud ambiental, Barrio Botta, Villa María, Córdoba, Argentina

Revista de Salud Ambiental
La calidad del agua, aire y suelo impactan directamente en el bienestar de las personas, afectando procesos básicos determinantes de salud. En el presente trabajo se evaluó la calidad del suelo mediante análisis fisicoquímicos y determinación del ...
Lara R. Buthet, Lucía Restovich, Mª Victoria Spinetto, Juan A. Gili, Miriam B. Virgolini   +4 more
doaj  

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Metales pesados en tejido muscular del bagre Ariopsis felis en el sur del golfo de México (2001-2004) Heavy metals in muscular tissue of the catfish, Ariopsis felis, in the southern Gulfof México (2001-2004)

Latin American Journal of Aquatic Research, 2008
Se analizó el contenido de metales pesados en tejido muscular del bagre, Ariopsis felis en el sur del golfo de México durante el período 2001-2004. La investigación fue efectuada buscando establecer un marco de referencia ambiental para este organismo ...
Felipe Vázquez, Tomás R Florville-Alejandre, Miguel Herrera, Luz María Díaz de León   +3 more
doaj  

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

La minería del hierro en Cehegín

Alquipir, 2007
La minería empieza con la propia historia del municipio de Cehegín, con los nativos en al Prehistoria hasta la fecha actual. A continuación desarrollaremos la misma con los datos obtenidos de los archivos y las publicaciones de este tema.
José María Alcaráz Pastor
doaj  

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source