Search results for " Total"
showing 10 items of 385 documents
ATR-FTIR spectroscopy for the routine quality control of exosome isolations
2021
Abstract Exosomes are nanosized vesicles containing specific cargos of DNA, RNA, proteins, metabolites, and intracellular and membrane lipids. Exosome isolation needs to be optimized carefully depending on the type of biofluid and tissue and the retrieved exosomes need to be characterized. The main objective of this study was to determine the feasibility of a multimodal analysis of Attenuated Total Reflectance – Fourier Transform Infrared (ATR-FTIR) spectroscopy and UPLC–QqTOF-MSMS for the development of a routine quality control tool of isolated exosomes and the rapid characterization of their lipid profiles and total protein content. Using human milk as model example, exosomes were isolat…
Analysis of Chemical and Biochemical Parameters of Petrol-Contaminated Soil after Biostimulation with an Enzyme Reagent
2020
This study aimed to assess the effect of petrol and the Fyre Zyme reagent on selected chemical and biochemical properties of loamy sand. The experiment was conducted under laboratory conditions. First, petrol was introduced into the soil at doses of 0 and 50 g k-1dry matter (DM). Next, 6% Fyre-Zyme enzyme reagent solution was added to the samples contaminated and uncontaminated with petrol, in the following combinations: 0 (control), once at 40 cm3 kg&ndash
Desafíos de la rendición de cuentas en la educación superior
2022
Este artículo presenta un análisis de la rendición de cuentas, conocida en inglés como accountability, y su expansión en los sistemas académicos. Con base en la investigación bibliográfica y documental, este trabajo enfatiza los dos sentidos de accountability: el normativo y el tecnocrático. La hegemonía del sentido tecnocrático sobre el normativo tiene implicaciones para el modelo de rendición de cuentas que se está consolidando y no favorece una responsabilidad inteligente de los sistemas de educación superior. This article analyzes accountability and its expansion in academic systems. Based on bibliographic and documentary research, this paper highlights the two senses of accountability:…
Use of reflectance infrared spectroscopy for monitoring the metal content of the estuarine sediments of the Nerbioi-Ibaizabal River (Metropolitan Bil…
2009
Multivariate partial least-squares (PLS) calibration models have been developed for the spatial and seasonal simultaneous monitoring of 14 trace elements (Al, As, Cd, Co, Cr, Cu, Fe, Mg, Mn, Ni, Pb, Sn, V, and Zn) in sediments from 117 samples taken in the estuary of the Nerbioi-Ibaizabal River. Models were based on the chemometric treatment of diffuse reflectance near-infrared (NIR) and attenuated total reflectance (ATR) mid infrared (MIR) spectra, obtained from samples previously lyophilized and sieved with a particle size lower than 63 microm. Vibrational spectra were scanned in both, NIR and MIR regions. Developed PLS models, based on the interaction between trace elements and organic m…
El uso de instrumentos incrementales para la mejora de los servicios públicos local: las Cartas de Servicio en los Ayuntamientos de Alicante y Valenc…
2020
El objetivo principal de este trabajo es analizar la implementación de las cartas de servicio en base a su complejidad y acomodo con otros instrumentos en los Ayuntamientos de Alicante y Valencia. Para ello, vamos a partir de un enfoque neo-institucionalista y del análisis documental para comprender los avances de ambos consistorios y compararlos entre sí. Entre los resultados obtenidos podemos destacar el intento de ambas instituciones por generar legitimidad en el entorno. También debemos de reseñar el uso de las experiencias previas focalizadas en los Servicios Sociales en el Ayuntamiento de Valencia o la experiencia en un periodo anterior en Alicante que sirvieron para relanzar las polí…
Diseño de un sistema de Gestión de la Calidad Total en el ámbito del deporte. Modelo MEXD de Excelencia Deportiva
2015
La industria del deporte en las últimas décadas ha sufrido una transformación vertiginosa. La cultura actual representa un avance significativo en todas las áreas, desde la gestión de entidades deportivas hasta la organización de competiciones o la elaboración de material deportivo. Este espectacular desarrollo del sector deportivo ha promovido nuevas demandas por parte de consumidores cada vez más exigentes y con mayores criterios de decisión. Actualmente existe una gran preocupación por mejorar la prestación de los servicios deportivos, lo que lleva a las organizaciones del ámbito del deporte a un mayor grado de exigencia en todos los marcos de actuación. Al mismo tiempo, la búsqueda de l…
Global distributions of diazotrophs abundance and biomass - Depth integrated values computed from a collection of source datasets - Contribution to t…
2013
The MAREDAT atlas covers 11 types of plankton, ranging in size from bacteria to jellyfish. Together, these plankton groups determine the health and productivity of the global ocean and play a vital role in the global carbon cycle. Working within a uniform and consistent spatial and depth grid (map) of the global ocean, the researchers compiled thousands and tens of thousands of data points to identify regions of plankton abundance and scarcity as well as areas of data abundance and scarcity. At many of the grid points, the MAREDAT team accomplished the difficult conversion from abundance (numbers of organisms) to biomass (carbon mass of organisms). The MAREDAT atlas provides an unprecedente…
Global distributions of diazotrophs nitrogen fixation rates - Depth integrated values computed from a collection of source datasets - Contribution to…
2013
The MAREDAT atlas covers 11 types of plankton, ranging in size from bacteria to jellyfish. Together, these plankton groups determine the health and productivity of the global ocean and play a vital role in the global carbon cycle. Working within a uniform and consistent spatial and depth grid (map) of the global ocean, the researchers compiled thousands and tens of thousands of data points to identify regions of plankton abundance and scarcity as well as areas of data abundance and scarcity. At many of the grid points, the MAREDAT team accomplished the difficult conversion from abundance (numbers of organisms) to biomass (carbon mass of organisms). The MAREDAT atlas provides an unprecedente…
Graphical THD minimization procedure for single phase five-level converters
2017
This paper proposes two graphycal procedure to mitigate h harmonics and to minimize the total harmonic distortion (THD), respectively. The paper considers a five-level inverter and fundamental frequency modulation: it computes the two switching angles able to reduce low order harmonics and able to minimize the THD. Simulation results are obtained and, in order to validate the proposed procedure, an experimental prototype is built and experimental results are carried out. The comparison between simulation and experimental results confirms the accuracy of the proposed graphycal procedure. It is shown that the switching angles to mitigate the third-fifth and the third-fifth-seventh harmonics e…