IQS: Envíos recientes
Mostrando ítems 401-420 de 794
Scaling-up multiobjective evolutionary clustering algorithms using stratification
Multiobjective evolutionary clustering algorithms are based on the optimization of several objective functions that guide the search following a cycle based on evolutionary algorithms. Their capabilities allow them to find ...
El viaje como experiencia
Este artículo reflexiona acerca del viaje, un concepto que puede significar desde un mero traslado hasta una transformación personal. En la primera parte del artículo, se pone de manifiesto que, en la sociedad actual, ...
Autocatalytic photoinduced oxidative dehydrogenation of pyrido[2,3-d]pyrimidin-7(8H)-ones: synthesis of C5–C6 unsaturated systems with concomitant formation of a long-lived radical
5,6-Dihydropyrido[2,3-d]pyrimidin-7(8H)-ones are readily accessed by a variety of methods and are a good scaffold for the development of biologically active compounds. However, they are very reluctant to dehydrogenate to ...
Dual stimuli-responsive polyphosphazene-based molecular gates for controlled drug delivery in lung cancer cells
A switchable silane derived stimuli-responsive bottle-brush polyphosphazene (PPz) was prepared and attached to the surface of mesoporous silica nanoparticles (MSNs). The hybrid polymer with PEG-like Jeffamine® M-2005 ...
Heteroacoplamientos catalizados por paladio
Durante los diez últimos años la química del paladio se ha aplicado intensamente en síntesis orgánica debido a su versatilidad y a su gran selectividad. En esta breve revisión se muestran las características generales de ...
Experimental, computational, and dimensional analysis of the mechanical performance of fused filament fabrication parts
Process parameters in Additive Manufacturing (AM) are key factors in the mechanical performance of 3D-printed parts. In order to study their effect, a three-zone model based on the printing pattern was developed. This ...
Bioprocess Strategies for Vitamin B12 Production by Microbial Fermentation and Its Market Applications
Vitamin B12 is a widely used compound in the feed and food, healthcare and medical industries that can only be produced by fermentation because of the complexity of its chemical synthesis. For this reason, finding better ...
The role of serotonergic signaling on phototactic and locomotor behavior in Daphnia magna
The role of serotonin in Daphnia magna phototactic and locomotor behavior was assessed using reverse genetics and pharmacological treatments with serotonin and fluoxetine. The study was conducted with four clones: the wild ...
Cost behavior in e-commerce firms
We conduct empirical research on the flexibility of operating costs of e-commerce firms. With an international sample of firms from different European countries, we find that e-commerce firms have a different cost structure ...
Turismo y desarrollo: los términos de una dialéctica
La evolución del fenómeno turístico a nivel mundial en las últimas décadas hace de dicha actividad uno de los motores socioeconómicos más dinámicos en la actualidad. Sin embargo, existen profundas desigualdades entre los ...
Highly Sensitive Silver-Microlayer Thin Film on a pp-PFM-Modified PDMS Strain Sensor as a Versatile Tool for Stretchable Electronics Applications
Strain sensors for wearable electronic devices have received attention due to their potential application in medicine for physiological monitoring or as part of advanced prosthetics. However, low sensitivity values as well ...
Cyclic Homo- and Heterohalogen Di-λ3-diarylhalonium Structures
In the context of the ever-growing interest in thecyclic diaryliodonium salts, this work presents synthetic designprinciples for a new family of structures with two hypervalenthalogens in the ring. The smallest bis-phenylene ...
20 años de investigación sobre Gobierno Corporativo Internacional
El Gobierno Corporativo Internacional es un tema de creciente interés en el área de Economía y Finanzas, ya que a pesar de todos los resultados que han supuesto décadas de investigación, este tema sigue estando en el centro ...
Mechanical performance of 3D-printed biocompatible polycarbonate for biomechanical applications
Additive manufacturing has experienced remarkable growth in recent years due to the customisation, precision, and cost savings compared to conventional manufacturing techniques. In parallel, materials with great potential ...
Analytical parameters of an amperometric glucose biosensor for fast analysis in food samples
Amperometric biosensors based on the use of glucose oxidase (GOx) are able to combine the robustness of electrochemical techniques with the specificity of biological recognition processes. However, very little information ...
Resonance: The Final Dissolution of Religions or the Last Stage of Secularization
Secularized societies allow for all kinds of expressions of human spirituality (or lack of it). However, both the established religions and the more fluid forms of spirituality seem to leave open a specific space for the ...
Dual-Functionalized Nanoliposomes Achieve a Synergistic Chemo-Phototherapeutic Effect
The enhancement of photodynamic therapy (PDT) effectiveness by combining it with other treatment modalities and improved drug delivery has become an interesting field in cancer research. We have prepared and characterized ...
Three-Step Enzymatic Remodeling of Chitin into Bioactive Chitooligomers
Here we describe a complex enzymatic approach to the efficient transformation of abundant waste chitin, a byproduct of the food industry, into valuable chitooligomers with a degree of polymerization (DP) ranging from 6 to ...
Answering questions concisely: analysis of a Twitter activity in a management course
This paper summarizes the results of an activity conducted on a management course using the Twitter microblogging service. Students were required to answer a question by sending a tweet and to favor three classmates’ tweets ...
