Search results for "Otro"

High yield neutron generator based on a high-current gasdynamic electron cyclotron resonance ion source

2015

In present paper, an approach for high yield compact D-D neutron generator based on a high current gasdynamic electron cyclotron resonance ion source is suggested. Results on dense pulsed deuteron beam production with current up to 500 mA and current density up to 750 mA/cm2 are demonstrated. Neutron yield from D2O and TiD2 targets was measured in case of its bombardment by pulsed 300 mA Dþ beam with 45 keV energy. Neutron yield density at target surface of 109 s 1 cm2 was detected with a system of two 3 He proportional counters. Estimations based on obtained experimental results show that neutron yield from a high quality TiD2 target bombarded by Dþ beam demonstrated in present work accele…

Curvelet-based method for orientation estimation of particles

2013

A method based on the curvelet transform is introduced for estimating from two-dimensional images the orientation distribution of small anisotropic particles. Orientation of fibers in paper is considered as a particular application of the method. Theoretical aspects of the suitability of this method are discussed and its efficiency is demonstrated with simulated and real images of fibrous systems. Comparison is made with two traditionally used methods of orientation analysis, and the new curvelet-based method is shown to perform clearly better than these traditional methods.

Methane-oxidizing and photoautotrophic bacteria are major producers in a humic lake with large anoxic hypolimnion

2011

Heterotrophic processes are considered to prevail in lakes with high terrestrial loading and a high content of dissolved organic carbon. However, previous studies have shown abundant methanotrophic bacteria (MOB) and photoautotrophic green sulphur bacteria (GSB) in some boreal lakes. We used genetic and lipid biomarkers to follow the seasonal succession of the abundance and carbon biomass of the major bacterial groups in Lake Mekkojarvi, a small Finnish polyhumic lake with a large anoxic hypolimnion. Biomarkers were based on length heterogeneity analysis of 16S rRNA gene amplification by polymerase chain reaction (PCR) (LH-PCR) and on phospholipid fatty acid (PLFA) analysis. Representative …

Flame-Retardant and Tensile Properties of Polyamide 12 Processed by Selective Laser Sintering

2022

This research was funded by the European Regional Development Fund within Measure 1.1.1.1 “Industry-Driven Research” of the Specific aid objective 1.1.1 “To increase the research and innovation capacity of scientific institutions of Latvia and their ability to attract external funding by investing in human resources and infrastructure” of the Operational Program “Growth and Employment” (Project No. 1.1.1.1/19/A/143). A.S. and A.Z. are grateful to funding received from the European Union Horizon 2020 Framework programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2.

Análogos de las benztropinas como agentes terapéuticos para la adicción a la cocaína: Estudios preclínicos en modelos animales de conducta adictiva

2015

La adicción a cocaína es un fenómeno de gran importancia clínica y social. Las consecuencias negativas que produce el abuso de estas sustancias son significativas, incluyendo problemas médicos, psicosociales y laborales para los individuos afectados. Además, su abuso está asociado a tasas incrementadas de crimen y violencia. La dependencia se caracteriza por tasas elevadas de recaída en un patrón cíclico de búsqueda y consumo. Estas recaídas pueden producirse incluso después de períodos prolongados de abstinencia. Dadas estas premisas, uno de los principales objetivos de nuestro trabajo es la identificación de fármacos que puedan atenuar el deseo compulsivo (“craving”) de consumir y reducir…

A new constructive method of anisotropic continuous materials behavioral laws based on the theory of invariants

2010

An Autonomous System to Take Angular Thermal-Infrared Measurements for Validating Satellite Products

2015

An autonomous system for field land surface temperature (LST) measurements taken at different observation angles was developed to be deployed easily at any conventional meteorological tower station. The system permits ground-truth data to be acquired on a continuous basis, and angularly scans land and sky hemispheres with a single thermal-infrared (TIR) radiometer. This paper describes the autonomous angular system and the methodology to assess ground-truth LST and relative-to-nadir emissivity data from system measurements. Ground-truth LSTs were used to validate satellite-retrieved LST products at two experimental sites (rice crop and shrubland areas). The relative-to-nadir emissivity valu…

Effect of ligand-binding on protein function

2014

Fractional viscoelastic transversally isotropic Timoshenko beam

2014

In this paper the viscoelastic behavior of pultruded beams has been examined. Pultruded beams are constituted by a polymer infilled with reinforcement in longitudinal direction, while in the orthogonal direction no fiber are present for technological reasons. As a consequence the material has two different behaviors in longitudinal and in orthogonal directions. It follows that pultruded beams are transversally isotropic, and the shear deformation may not be neglected. Based upon the previous observations and assuming for Creep and/or Relaxation test the power law, the constitutive equations are ruled by fractional operators. From constitutive laws, and assuming the Timoshenko beam theory to…

Inhibidores atípicos del transporte de dopamina: posibles agentes terapéuticos para el tratamiento de la adicción a los estimulantes

2013

La adicción a psicoestimulantes es en la actualidad un fenómeno de gran importancia tanto desde el punto de vista clínico como social. Las consecuencias negativas que se derivan del consumo de estas sustancias son significativas, incluyendo problemas médicos, psicosociales y laborales. Asimismo el abuso de drogas se relaciona con tasas incrementadas de crimen y violencia. Según el último informe emitido por el Observatorio Europeo de las Drogas y Toxicomanías, el consumo de anfetaminas se ha mantenido estable en la mayoría de los países de la Unión Europea, mientras que el nivel de consumo de cocaína durante este último año se encuentra por encima de la media en países como Irlanda, Chipre,…