Results 41 to 50 of about 65,523 (199)

Núcleos de apoyo contable y fiscal Naf

open access: yes, 2022
En el presente trabajo se evidenciará la participación de un estudiante de la UniversidadCooperativa de Colombia en los Núcleos de Apoyo Contable y Fiscal NAF y se anexarálaevidencia de la respuesta oportuna que dió a todas las solicitudes por parte de ...
Cardona Cardona, Laura
core  

Organic Matter Quality and Microbial Activity in Soils Managed With Brachiaria Succession

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Although succession systems and brachiaria improve soil quality, gaps remain in microbial community dynamics, activity, and soil organic matter stocks. Methods The objective was to evaluate the carbon (C) and nitrogen (N) stocks of soil organic matter fractions and their distribution, molecular characterization, enzyme activity ...
Siro Paulo Moreira   +5 more
wiley   +1 more source

Characterization of hadron production in γ−A photonuclear interactions of ultra-peripheral collisions

open access: yesNucleus, 2019
A methodology for the simulation of ultra-peripheral collisions, specifically ultra-relativistic heavy ion 197Au-197Au and p-208Pb collisions, is developed.
S. Consuegra Rodríguez   +2 more
doaj  

Machine Learning Model for Predicting Hepatocellular Carcinoma Development in Patients With Hepatitis B Virus‐Related Cirrhosis Receiving Antiviral Therapy

open access: yesThe Kaohsiung Journal of Medical Sciences, EarlyView.
ABSTRACT Few prediction models have been specifically designed to evaluate the risk of hepatocellular carcinoma (HCC) in patients with chronic hepatitis B and cirrhosis. This study aimed to develop a machine learning‐based prediction model to assess the risk of developing HCC in patients with hepatitis B virus (HBV)‐related cirrhosis undergoing nucleos(
Pao‐Yuan Huang   +4 more
wiley   +1 more source

Econamic research in Colombia La investigación económica en Colombia

open access: yesCuadernos de Economía, 1997
This paper takes a balance of the "state of the art" of economic research in Colombia. The author describes the institutional factors which encourage or inhibit free investigation in economic matters.
Bejarano Jesús Antonio
doaj  

Exometabolomics Reveals Metabolic Modulation Induced by Chia Oil Supplementation in Adipose Tissue Explants From Obese Mice

open access: yesLipids, EarlyView.
The experimental design and the exometabolomic findings obtained by 1H‐NMR analysis of conditioned media from subcutaneous (SAT) and epididymal adipose tissue (EAT) explants of control and obese mice supplemented with chia oil (1.5% (w/w)). Following 8 weeks of control or high‐fat diet and 5 weeks of chia oil supplementation, SAT and EAT explants were ...
Gilson Costa dos Santos Jr   +5 more
wiley   +1 more source

Núcleos positivos [PDF]

open access: yes, 2013
Publicación a texto completo no autorizada por el autorEstudia la estructura de los núcleos positivos operador-valuado denido sobre un conjunto Ω, y caracteriza tales núcleos en términos de un espacio de Hilbert, cuyos elementos son funciones denidas ...
Guerra Huamán, Moisés Daniel
core  

Biosurfactant production by Pseudomonas aeruginosa isolated from mining waste: From genomic analysis to development of a polymeric composite for removal of hexavalent chromium

open access: yesPolymer International, EarlyView.
Biosurfactant was produced by Pseudomonas aeruginosa using andiroba waste from Amazonia. A biosurfactant–alginate composite (Alg/BioS) was successfully synthesized via ionotropic gelation, and achieved up to 70% Cr6+ removal from water. Abstract Environmental contamination by heavy metals represents a significant challenge due to their persistence in ...
Paulo Diniz Austriaco   +11 more
wiley   +1 more source

Revisitando la programación en paralelo

open access: yesRevista de Investigación de Física, 2011
En la última década ha hecho su aparición los procesadores de varios núcleos, de modo que la progra- mación en paralelismo multisimétrico (SMP) ha vuelto a la vida luego de un periodo de una década en que los clusters basados en el OpenMPI habian casi ...
A. P. Aslla   +2 more
doaj   +1 more source

Synthesis and application of alginate@CuFe2O4 polymeric spheres in 17‐β‐estradiol adsorption processes in Amazonian rivers

open access: yesPolymer International, EarlyView.
Magnetic alginate beads, functionalized with copper ferrite, effectively remove 17‐β‐estradiol from Amazonian water, exhibiting optimized 238.65 μg g−1 capacity, fast 40 min kinetics, easy recovery, and successful remediation. Abstract The presence of endocrine‐disrupting compounds, such as 17‐β‐estradiol, in aquatic ecosystems poses a significant ...
Dante S Silva   +10 more
wiley   +1 more source

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