Results 41 to 50 of about 118,524 (145)
El presente artículo plantea y soluciona el problema de síntesis de posición y velocidad de mecanismos de cuatro barras empleando diseño óptimo dimensional e implementando algoritmos de optimización no-lineal (Programación Cuadrática Secuencial-SQP).
Carlos Humberto Galeano Urueña +2 more
doaj
Landscape forest cover, not edge contrast, modulates edge effects on palm diversity
Our findings demonstrate that landscape forest cover plays a critical role in modulating edge effects in plant communities in our study system, but not all woody crops systems provide buffering benefits, as cacao plantations in our study failed to soften edge effects.
Alma L. Trujillo‐Miranda +7 more
wiley +1 more source
Collective Interactions in Ion Pairs
This study demonstrates, by means of the analysis of the electron density topology, that collective interactions stabilize ion pairs through the simultaneous engagement of multiple atoms, rather than simple pairwise electrostatics. ABSTRACT Collective interactions represent a recently proposed bonding mode in which stabilization arises not from a ...
Jorge Gonzalo +3 more
wiley +1 more source
Effect of the synthesis method and praseodymium on the electrical properties of Mg-Cubic Zirconia
The synthesis of nanostructured Mg-FSZ fully stabized zirconia by chemical methods such as colloidal gel, polyester resin and hydrolisis of alkoxides has been studied.
Badenes, J. +6 more
doaj
Instrumentalisierung der geschichtlichen Ereignisse. Eine Domäne der deutschen Konservativen?
Este análisis describe el desarollo del conservadurismo alemán. Hace destacar que los conservadores tienen una tendencia a acumular los acontecimientos históricos importantes y usarlos a su beneficio.
Alesv Urválek
doaj
This study reports a near‐infrared emitting ionic aerogel composed of cationic cyclometalated Pt(II) moieties linked by Si─O─Si bonds. The resulting porous hybrid material enables the selective detection and recovery of Au(III) ions from mixed‐metal solutions. Owing to its reversible luminescent response and thiourea‐assisted gold recovery, the aerogel
Janira Herce +8 more
wiley +1 more source
Our study highlights that when acclimatisation periods are too short, the substantial economic and logistical investment in soft‐release protocols may fail to deliver the expected conservation gains. Therefore, defining evidence‐based acclimatisation periods that are long enough to promote settlement, yet compatible with logistical constraints, may ...
Pablo Cisneros‐Araujo +14 more
wiley +1 more source
En el presente trabajo se presentan los resultados del proyecto "Síntesis de mecanismos", financiado en la CONVOCATORIA INTERNA PARA FOMENTAR LA PUBLICACIÓN DE TEXTOS ACADÉMICOS AÑO 2021, de la Vicerrectoría de Investigaciones y Extensión de la ...
Mejía Calderón, Luz Adriana +1 more
core +1 more source
En el presente trabajo se propone la síntesis de la Ditizona (Difeniltiocarbazona) como un ejercicio de laboratorio integrador de los conceptos fundamentales de la química orgánica.
Armando Carrasquero-Durán +2 more
doaj
Síntesis de Fenantroizidinas Quirales Bioactivas y Fenantridinas con Potencial Farmacológico [PDF]
En el Capítulo I se describe la preparación del esqueleto fenantroindolizidínico quiral. La síntesis se apoya en la aminoalilación estereoselectiva de derivados del 2-(fenantren-9-il)acetaldehído, usando reactivos de alilindio y terc-butilsulfinilamida ...
Anton-Torrecillas, Cintia
core

