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Now showing items 9669-9688 of 10141
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U-Pb dating and geochemical dataset of fracture-filling calcite veins from the Boixols-Sant Corneli anticline (Southern Pyrenees)
; ; ; ; ; ; ; ; Gerdes, Axel
; Beranoaguirre de Miguel, Aratz ; (Elsevier, 2022-12)
U-Pb dating and geochemical analyzes ( 818 O, 813 C, A47 , 87 Sr/ 86 Sr and elemental composition) have been applied to fracture-filling calcite veins and host carbonates from the Boixols-Sant Corneli anticline, which ... -
U-Shaped and Surface Functionalized Polymer Optical Fiber Probe for Glucose Detection
Azkune Ulla, Mikel; ; Aldabaldetreku Etxeberria, Gotzon ; Arrospide Zabala, Eneko ; ; Bikandi Irazabal, Iñaki ; ; Vilas Vilela, José Luis (MDPI, 2017-01)
In this work we show an optical fiber evanescent wave absorption probe for glucose detection in different physiological media. High selectivity is achieved by functionalizing the surface of an only-core poly(methyl ... -
Ubiquinol Short-Term Supplementation Prior to Strenuous Exercise Improves Physical Performance and Diminishes Muscle Damage
(MDPI, 2023-05-31)The benefits of physical exercise on health are diminished when it is non-planned, strenuous, or vigorous, which causes an increase in oxygen consumption and production of free radicals, particularly serious at the muscular ... -
Ubiquitylation Dynamics of the Clock Cell Proteome and TIMELESS During a Circadian Cycle
Szabó, Áron; Papin, Christian; Cornu, David; Chélot, Elisabeth; Lipinszki, Zoltán; Udvardy, Andor; Redeker, Virginie; Mayor Martínez, Ugo; Rouyer, François (Cell Press, 2018-05-22)
Circadian clocks have evolved as time-measuring molecular devices to help organisms adapt their physiology to daily changes in light and temperature. Transcriptional oscillations account for a large fraction of rhythmic ... -
Udalerri Euskaldunen Mankomunitatea (UEMA) legezkontrakotzat jotzen duen Epaiari buruzko iruzkinak (Auzitegi Goreneko Epaia, 2000.ekoa)
(Eusko Ikaskuntza, 2000)[EU] Artikulu honetan, gaur-gaurkoa dugun gai bat aztertzen da : Udalerri Euskaldunen Mankomunitatea legezkontrakotzat. jotzen duen Epaia. UEMAren oinarri juridikoak aztertu ondoren, Mankomunitate horren ibilbideak izan ... -
Ugi Reaction on α-Phosphorated Ketimines for the Synthesis of Tetrasubstituted α-Aminophosphonates and Their Applications as Antiproliferative Agents
López Francés, Adrián; ; Martínez de Marigorta Izaga, Edorta ; Palacios Gambra, Francisco Javier ; Vicario Hernando, Javier (MDPI, 2021-03-16)
An Ugi three-component reaction using preformed α-phosphorated N-tosyl ketimines with different isocyanides in the presence of a carboxylic acid affords tetrasubstituted α-aminophosphonates. Due to the high steric hindrance, ... -
Ultra Light Axionic Dark Matter: Galactic Halos and Implications for Observations with Pulsar Timing Arrays
De Martino, Ivan; Broadhurst, Thomas; Tye, S. H. Henry; Chiueh, Tzihong; Schive, Hsi-Yu; Lazcoz Sáez, Ruth (MDPI, 2018-01-16)
The cold dark matter (CDM) paradigm successfully explains the cosmic structure over an enormous span of redshifts. However, it fails when probing the innermost regions of dark matter halos and the properties of the Milky ... -
Ultra-massive spacetimes
Martín Senovilla, José María (EMS, 2023)
A positive cosmological constant ƒ > 0 sets an upper limit for the area of marginally future-trapped surfaces enclosing a black hole (BH). Does this mean that the mass of the BH cannot increase beyond the corresponding ... -
Ultrafast entanglement switching and singlet-triplet transitions control via structured terahertz pulses
(IOP, 2022)[EN] Terahertz (THz) vector beams with spatially textured polarization are proposed to steer the spin and spatial distributions of two interacting electrons in a quantum dot. We study theoretically the spatiotemporal ... -
Ultrahigh Superelastic Damping at the Nano-Scale: a Robust Phenomenon to Improve Smart MEMS Devices
; Nó Sánchez, María Luisa; ; Breczewski Filberek, Tomasz; López Echarri, Ángel María; Schuh, Christopher A.; San Juan Núñez, José María (Elsevier, 2019-03)
Micro and nano pillars of Copper-based shape memory alloys (SMAs) with feature sizes between about 2 mu m and 250 nm are known to exhibit ultra-high mechanical damping due to the nucleation and motion of stress-induced ... -
Ultraprecise Controller for Piezoelectric Actuators Based on Deep Learning and Model Predictive Control
; Artetxe Lázaro, Eneko; Barambones Caramazana, Oscar ; Calvo Gordillo, Isidro ; ; (MDPI, 2023-02-03)
Piezoelectric actuators (PEA) are high-precision devices used in applications requiring micrometric displacements. However, PEAs present non-linearity phenomena that introduce drawbacks at high precision applications. One ... -
Ultrasonic Guided Wave Testing on Cross-Ply Composite Laminate: An Empirical Study
; Echaniz Marañón, Josu; Cantero Chinchilla, Sergio; ; Malik, Muhammad Khalid (MDPI, 2020-09-16)
Structural health monitoring comprises a set of techniques to detect defects appearing in structures. One of the most viable techniques is based on the guided ultrasonic wave test (UGWT), which consists of emitting waves ... -
Ultrasound and Eco-Detergents for Sustainable Cleaning
(MDPI, 2023-07-12)Green chemistry faces a major challenge imposed by the Sustainable Development Goals (6, 14 and 15) defined in the 2030 Agenda. In the case of cleaning products (detergents), the challenges often become a paradox: even if ... -
Ultrasound Tumor Size Assessment, Histology and Serum Enzyme Analysis in a Rat Model of Colorectal Liver Cancer
; García-Alonso Montoya, Ignacio; ; ; ; ; ; (Elsevier, 2020-06)
During tumor development, tissue necrosis appears as a natural phenomenon directly associated with an increase in tumor size. The aim of this study was to assess the use of ultrasound (US) for predicting natural tumor ... -
Ultrasound-Assisted “Green” Extraction (UAE) of Antioxidant Compounds (Betalains and Phenolics) from Opuntia stricta var. Dilenii’s Fruits: Optimization and Biological Activities
Gómez López, Iván; Lobo-Rodrigo, Gloria; Portillo Baquedano, María Puy; Cano, M. Pilar (MDPI, 2021-11-08)
Opuntia stricta var. Dillenii’s prickly pears are an underutilized fruit with a high content of betalains and phenolic compounds that could bring potential health benefits for humans. The aim of this study is the optimization ... -
Ultrasound-based structural health monitoring methodology employing active and passive techniques
Echaniz Marañón, Josu; ; ; ; ; (Elsevier, 2023-04)
Currently, structures are examined during manufacturing by means of Non Destructive Tests (NDT), but there is an increasing interest in monitoring its integrity over its whole life cycle by using Structural Health Monitoring ... -
Um Reino e as suas Repúblicas no Atlântico. Comunicações Políticas entre Portugal, Brasil e Angola nos Séculos XVII e XVIII: Rio de Janeiro, Civilização Brasileira
Portillo Valdés, José María (Instituto de Ciências Sociais da Universidade de Lisboa, 2019-12)
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Uncertainties in the Testing of the Coefficient of Thermal Expansion of Overhead Conductors
Bedialauneta Landaribar, Miren Terese; Albizu Flórez, Igor ; Fernández Herrero, Elvira ; Mazón Sainz-Maza, Angel Javier (MDPI, 2020-01-14)
Overhead lines can be replaced by high temperature low sag (HTLS) conductors in order to increase their capacity. The coe cients of thermal expansion (CTE) of the HTLS conductors are lower than the CTE of conventional ... -
Uncertainty and detection limits of Pu-241 determination by liquid scintillation counting (LSC)
(Elsevier, 2021-10)[EN]Determination of Pu-241 is an essential issue for radiation protection, as it is the precursor of some nuclides with high radiotoxicity. Pu-241 is a low energy beta emitter, which makes its measurement more challenging ... -
Uncharted Stable Peninsula for Multivariable Milling Tools by High-Order Homotopy Perturbation Method
De la Luz Sosa, Jose; Olvera Trejo, Daniel; Urbicain Pelayo, Gorka; Martínez Romero, Óscar; Elías Zúñiga, Alex; (MDPI, 2020-11-06)
In this work, a new method for solving a delay differential equation (DDE) with multiple delays is presented by using second- and third-order polynomials to approximate the delayed terms using the enhanced homotopy ...