Browsing Artículos by Title
Now showing items 752-771 of 10990
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Amorphous solid dispersions in Poly(ε-caprolactone)/Xanthohumol bioactive blends: physicochemical and mechanical characterization.
(Royal Society of Chemistry, 2021-04-26)This paper reports the obtention of amorphous solid dispersions (ASDs) of Xanthohumol (XH) into PCL containing up to 50 wt% of the bioactive compound in amorphous form thanks to the advantageous specific interactions ... -
Amphibian loss alters periphyton structure and invertebrate growth in montane streams
(Wiley, 2022-11)Amphibians are declining worldwide due to a combination of stressors such as climate change, invasive species, habitat loss, pollution and emergent diseases. Although their losses are likely to have important ecological ... -
Amyloid β / PKC-dependent alterations in NMDA receptor composition are detected in early stages of Alzheimer´s disease
(SpringerNature, 2022-03-19)[EN] Amyloid beta (Abeta)-mediated synapse dysfunction is an early event in Alzheimer's disease (AD) pathogenesis and previous studies suggest that NMDA receptor (NMDAR) dysregulation may contribute to these pathological ... -
Amyloid β1–42 Oligomers Induce Galectin–1S8 O–GlcNAcylation Leading to Microglia Migration
(MDPI, 2023-07-17)Protein O–GlcNAcylation has been associated with neurodegenerative diseases such as Alzheimer’s disease (AD). The O–GlcNAcylation of the Amyloid Precursor Protein (APP) regulates both the trafficking and the processing of ... -
Amyotrophic lateral sclerosis: a complex syndrome that needs an integrated research approach
(Wolters Kluwer, 2019-02)Amyotrophic lateral sclerosis, the most common neurodegenerative disease affecting motor neurons, lacks an effective treatment. A small fraction of amyotrophic lateral sclerosis cases have a familial origin, related to ... -
An accuracy evolution method applied to five-axis machining of curved surfaces
(Springer, 2023-04)Currently, some high-value-added applications involve the manufacturing of curved surfaces, where it is challenging to achieve surface accuracy, repeatability, and productivity simultaneously. Among free-form surfaces, ... -
An active/passive joint for reconfiguration applications
(Springer, 2019-09-07)In this paper, an active/passive reconfigurable 2R joint is presented. Direct and inverse kinematic problems and the force transmission are considered. The advantages of the current design show its superiority with respect ... -
An Adaptable Train-to-Ground Communication Architecture Based on the 5G Technological Enabler SDN
(MDPI, 2019-06-12)Railway communications are closely impacted by the evolution and availability of new wireless communication technologies. Traditionally, the critical nature of railway services, the long lifecycle of rolling stock, and ... -
An Advanced Control Technique for Floating Offshore Wind Turbines Based on More Compact Barge Platforms
(MDPI, 2018-05)Hydrodynamic Floating Offshore Wind Turbine (FOWT) platform specifications are typically dominated by seaworthiness and maximum operating platform-pitch angle-related requirements. However, such specifications directly ... -
An Agave Counting Methodology Based on Mathematical Morphology and Images Acquired through Unmanned Aerial Vehicles
(MDPI, 2020-11-02)Blue agave is an important commercial crop in Mexico, and it is the main source of the traditional mexican beverage known as tequila. The variety of blue agave crop known as Tequilana Weber is a crucial element for tequila ... -
An Algebraic Preservation Theorem for Aleph-Zero Categorical Quantified Constraint Satisfaction
(Logical Methods in Computer Science c/o Institut f. Theoretische Informatik, Technische Universität Braunschweig, 2013-03-29)We prove an algebraic preservation theorem for positive Horn definability in aleph-zero categorical structures. In particular, we define and study a construction which we call the periodic power of a structure, and define ... -
An Alternative Approach for the Incorporation of Cellulose Nanocrystals in Flexible Polyurethane Foams Based On Renewably Sourced Polyols
(Elsevier, 2016-11-16)Este trabajo analiza tanto el efecto de los nanocristales de celulosa en las propiedades finales de espumas flexibles de poliuretano basadas en castor oil y maíz, sino que además se realiza un análisis en profundidad sobre ... -
An alternative experimental methodology to determine the diagonal cracking resistance of steel-reinforced concrete beams
(Elsevier, 2021-10-01)[EN]An alternative experimental method for predicting the diagonal shear cracking resistance of steel-reinforced concrete beams is developed in this paper. Conventional extensometric strain-gauge rosettes are placed on the ... -
An Alternative Strategy to Improve the Flicker Severity Measurement
(Elservier, 2014-07-12)The IEC 61000-4-15 standard defines a flickermeter that is universally accepted as the meter used for the objective measurement of a disturbing light flicker. The accurate results provided by the IEC flickermeter under ... -
An Analysis of Electroplated cBN Grinding Wheel Wear and Conditioning during Creep Feed Grinding of Aeronautical Alloys
(MDPI, 2018-05-14)Cubic boron nitride (cBN), in addition to diamond, is one of the two superabrasives most commonly used for grinding hard materials such as ceramics or difficult-to-cut metal alloys such as nickel-based aeronautical alloys. ... -
An Analysis of the Type of Questions Posed by Teachers in English-Medium Instruction at University Level
(MDPI, 2023-01-12)Teacher-led questions not only guide meaning-making interactions but they also scaffold students’ learning, and this is especially important in English-medium instruction (EMI). Due to the scant literature on this topic ... -
An analytic superfield formalism for tree superamplitudes in D=10 and D=11
(Springer, 2018-05-16)Tree amplitudes of 10D supersymmetric Yang-Mills theory (SYM) and 11D supergravity (SUGRA) are collected in multi-particle counterparts of analytic on-shell superfields. These have essentially the same form as their chiral ... -
An anomaly in quantum phases induced by borders
(Nature, 2020-04-24)The stationary behavior of a quantum system is determined by its Hamiltonian and its boundary conditions. All quantum phase transitions (QPT) reported previously were induced by changing the Hamiltonian. In a circular spin ... -
An Approach to the Synthesis of a Hepatitis C Virus Inhibitor through a Proline-Catalyzed 1,3-Dipolar Cycloaddition Using Acrolein
(Thieme, 2021-09-06)An efficient and easy protocol for performing 1,3-dipolar cycloaddition using azomethine ylides and acrolein is presented. The reaction catalyzed by d-proline allows the synthesis of C-3 unsubstituted pyrrolidines. The ... -
An approach version of fuzzy metric spaces including an ad hoc fixed point theorem
(Springer, 2015-02-27)In this paper, inspired by two very different, successful metric theories such us the real view-point of Lowen's approach spaces and the probabilistic field of Kramosil and Michalek's fuzzymetric spaces, we present a family ...