Results 71 to 80 of about 1,402,894 (319)

A Termite‐Inspired Alternative to Cement

open access: yesAdvanced Functional Materials, EarlyView.
A termite‐inspired composite of clay, cellulose, and lignin forms a dense fibrous network with concrete‐like strength (32 MPa) and superior elasticity, processed at ambient temperature. Abstract Clay combined with organic materials is used by termites as a strong and durable construction material for their mounds with minimal environmental impact. Here,
Oren Regev   +3 more
wiley   +1 more source

Sobre unos afloramientos de rocas verdes de sierra de Gádor (Cordilleras Béticas) [PDF]

open access: yes, 1969
Se estudian tres pequeños afloramientos de rocas verdes existentes en la parte occidental de sierra de Gádor (provincia de Almería).Se han identificado los siguientes minerales: oligoclasa, clorita, pistacita, actinolita, sericita, cuarzo, calcita y ...
Orozco Fernández, Miguel
core   +1 more source

Elementos y recursos minerales : aplicaciones y reciclaje [PDF]

open access: yes, 2018
Traducció de: Elements i recursos mineralsDescripció del recurs: 5 novembre 2018Fruto de la petición de profesores, alumnos y visitantes del Museu de Geologia Valentí Masachs (UPC) de disponer de un libro que trotara del tema central del museo, como son ...
Sanz Balagué, Joaquim   +1 more
core   +2 more sources

Multiscale Structuring of Hydroxyapatite via Two‐Photon Lithography of Nanocomposites

open access: yesAdvanced Functional Materials, EarlyView.
Hydroxyapatite scaffolds are of great interest in bone tissue engineering applications, ranging from 3D cell culture to regenerative medicine. Using two‐photon lithography of a transparent nanocomposite, hydroxyapatite microstructures with features ranging from submicron to centimeter‐scale are fabricated. This allows to mimic the natural bone geometry,
Leonhard Hambitzer   +6 more
wiley   +1 more source

CONCENTRACIÓN E INTERRELACIÓN MINERAL EN SUELO, FORRAJE Y SUERO DE OVINOS DURANTE DOS ÉPOCAS EN EL VALLE DE TOLUCA, MÉXICO [PDF]

open access: yes, 2008
Para identificar desequilibrios minerales y su interrelación se muestreó suelo, forraje, agua y sangre de corderos y ovejas, en junio y octubre de 1991, en seis unidades de producción ovina (UP) del valle de Toluca, México.
DOMINGUEZ VARA, IGNACIO ARTURO   +3 more
core  

Roll‐to‐Roll Mechanical Exfoliation for Large‐Area van der Waals Films with Preserved Crystallographic Alignment

open access: yesAdvanced Functional Materials, EarlyView.
A roll‐to‐roll exfoliation method is demonstrated that preserves the crystallographic alignment of anisotropic 2D materials over large areas, enabling scalable fabrication of directional electronic and optoelectronic devices. Abstract Anisotropic 2D materials such as black phosphorus (BP), GeS or CrSBr, exhibit direction‐dependent optical and ...
Esteban Zamora‐Amo   +14 more
wiley   +1 more source

Agua, rocas y metales: Arqueología y explotación de recursos minerales en la Edada Media [PDF]

open access: yes, 2008
Reflexiones acerca de la forma de abordar los estudios sobre la explotación de recursos minerales y su transformación en la Edad Media. Se propone una investigación a partir de las aportaciones de los textos escritos, la arqueología y la analítica ...
Sancho i Planas, Marta
core  

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Características mineraloquímicas e implicancias genéticas de la Vesubianita del Skarn Loma Marcelo, sierras australes de Buenos Aires [PDF]

open access: yes, 2013
Fil: Ballivián Justiniano, Carlos A.. Instituto de Recursos Minerales (INREMI). Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Lajoinie, María Florencia. Instituto de Recursos Minerales (INREMI).
Ballivián Justiniano, Carlos A.   +4 more
core  

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

open access: yesAdvanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden   +11 more
wiley   +1 more source

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