Results 131 to 140 of about 1,402,894 (319)
Devenir histórico de la relación entre la joyería y las ciencias mineras y de los minerales [PDF]
, 1998 El presente trabajo muestra la interrelación existente entre minería y joyería desde los albores de la Humanidad, motivada por el atractivo que siempre metales y minerales han ejercido sobre el ...
Orche García, Enrique +1 more
core
Advanced Functional Materials, EarlyView.This study develops a novel atomic engineering strategy to fine‐tune the spin state of α‐Fe2O3 catalysts toward a medium‐spin state, thereby modulating peroxymonosulfate activation and selectively yielding surface‐bound radicals. Compared with free radicals, surface‐bound radicals exhibit moderated oxidation potential, extended lifespan, surface ...
Shuyu Wang +7 more
wiley +1 more source
Lilloa, 2016 González, Juan A., Guillermo O. Martín (h), Marcela A. Bruno, Fernando E. Prado. 2016. “El cultivo de ‘quínoa’ ( Chenopodium quinoa) como complemento forrajero en la zona de los Valles Calchaquíes (Noroeste Argentino)”. Lilloa 53 (1).
Juan A. González +3 more
doaj
Advanced Functional Materials, EarlyView.Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco +7 more
wiley +1 more source
Relación entre susceptibilidad magnética y contenido de minerales pesados en un depósito aluvial
Earth Sciences Research Journal, 1993 <p class="MsoNormal" style="line-height: normal; margin: 0cm 0cm 0pt; mso-layout-grid-align: none;"><span style="font-family: ">A partir de observaciones realizadas en una perforación a orillas del Rio Nechi en el</span></p><p ...
Díaz C. Ramiro L.
doaj
Advanced Functional Materials, EarlyView.Cuttlebone‐inspired metamaterials exploit a septum‐wall architecture to achieve excellent mechanical and functional properties. This review classifies existing designs into direct biomimetic, honeycomb‐type, and strut‐type architectures, summarizes governing design principles, and presents a decoupled design framework for interpreting multiphysical ...
Xinwei Li, Zhendong Li
wiley +1 more source
Archivos Latinoamericanos de Nutrición, 2008 Nile tilapia (Oreochormis niloticus) fishbone is a fish part with unknown composition. After elaboration of flour fishbone of tilapia it was analysede. The results in100g of flour were: moisture (14.2%), protein (40.8%), total lipids (25.3%), and ash (18.
Maria Eugênia Petenuci +6 more
doaj
Caracterización y cuantificación automatizadas de menas metálicas mediante visión artificial: Proyecto CAMEVA [PDF]
, 2008 El proyecto CAMEVA (Caracterización Automatizada de Menas metálicas mediante Visión Artificial) pretende desarrollar un sistema automatizado capaz de llevar a cabo la identificación y cuantificación de los minerales presentes en muestras de menas ...
Bernhardt, Heinz Juergen +11 more
core
Advanced Functional Materials, EarlyView.Two isomorphic COFs were synthesized and compared, including an amphoteric COF (SQ‐TAPT) and a neutral COF (PDA‐TAPT). The ionic bonds in SQ‐TAPT introduce more Born effective charges, thereby enhancing its ionic displacement polarization. Experimental and theoretical calculations demonstrated that SQ‐TAPT exhibited higher polarity and stronger ...
Ge Yan +12 more
wiley +1 more source