Results 111 to 120 of about 528,483 (278)
El uso de estrategias de aprendizaje y su correlación con la motivación de logro en los estudiantes [PDF]
, 2008 Observando la disposición motivacional que presentan los estudiantes al momento de enfrentar los contenidos y la forma de procesarlos para lograr un aprendizaje significativo, es que surge la necesidad de determinar si existe relación entre la calidad de
Cid Cid, Sofía
core +1 more source
Coupled Clustering in Hierarchical Matrices for the Oseen Problem
International Journal for Numerical Methods in Fluids, EarlyView.Fluid flow problems can be modelled by the Navier‐Stokes or, after linearization, by the Oseen equations. Their discretization results in linear systems in saddle point form which are typically very large and need to be solved iteratively. We propose a novel block structure for hierarchical matrices which is then used to build preconditioners for the ...
Jonas Grams, Sabine Le Borne
wiley +1 more source
, 1999 Texto de la Conferencia pronunciada por el Prof Dr. Guillermo García Pérez el día 13 de Agosto de 1999, en el Curso Monográfico "El Cid Histórico y el Cid en la Leyenda " impartido por la Universidad de Salamanca e incluido en el "XII Curso Universitario
García Pérez, Guillermo
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Food Safety and Health, EarlyView.Aloe vera‐derived biopolymers and nanoformulations enhance antimicrobial, antioxidant, and barrier functions in clean‐label edible coatings and films, whereas safety‐critical anthraquinone thresholds and regulatory constraints shape their translational potential.
Acharya Balkrishna +6 more
wiley +1 more source
Journal of Agriculture and Food ResearchCrop rotation with species diversification allows to increase yield, however, there is few information on the profitability of this practice. This study aimed to determine whether crop rotation systems are more productive and economically advantageous ...
Tiago Santos Telles +4 more
doaj +1 more source
Design, fabrication, and delivery of a charge injection device as a stellar tracking device [PDF]
Six 128 x 128 CID imagers fabricated on bulk silicon and with thin polysilicon upper-level electrodes were tested in a star tracking mode. Noise and spectral response were measured as a function of temperature over the range of +25 C to -40 C. Noise at 0
Burke, H. K. +5 more
core +1 more source
Detection of Radical Anions by Electrospray‐Ionization Mass Spectrometry
Helvetica Chimica Acta, EarlyView.The present study investigates the ability of electrospray‐ionization mass spectrometry to detect radical anions. For neutral analytes with high electron affinities, radical anions are formed by cathodic reduction and can be easily observed. In contrast, analytes with lower electron affinities require the addition of a reducing agent for the generation
Niklas F. Eisele +2 more
wiley +1 more source
Noninvasive Disease Diagnostics: The Swiss Contribution Highlights to Breath Analysis Research
Helvetica Chimica Acta, EarlyView.Breath analysis networks across Switzerland linking health monitoring, clinical applications, population studies, and data‐driven public health decisions. ABSTRACT To celebrate the 125th anniversary of the Swiss Chemical Society, we present a review and perspective to highlight the recent research in breath analysis that has been conducted in ...
Stefan James Swift +6 more
wiley +1 more source
Phosphoramidate and Silyl Amine Mediated Synthesis of Isocyanide Cyclopentadienone Iron Complexes
Helvetica Chimica Acta, EarlyView.Carbonyl ligands in cyclopentadienone iron complexes are replaced by isocyanide ligands without using free, malodorous isocyanides. The reaction takes place via an Aza‐Wittig‐type reaction starting from primary amines, employing either phosphoramidates or silyl amines as intermediate reagents.
André Bütikofer +3 more
wiley +1 more source
Control adaptativo de un motor trifásico para equipo de carga pesada empleando filtro Kalman
Serie Científica de la Universidad de las Ciencias InformáticasLas plataformas giratorias para equipos de carga pesada existentes en el país datan de la década del 70 y utilizan sistemas de control basados en electrónica obsoleta. Después de tantos años de explotación, estos sistemas requieren cambios para adaptarse
Jorge Humberto Vázquez Leiva +2 more
doaj