Artículos: Envíos recientes
Mostrando ítems 21-40 de 53
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Integrated microfluidic preconcentration and nucleic amplification system for detection of influenza a virus H1N1 in saliva
(MDPI, 2020-02-16)Acceso abiertoInfluenzaAviruses are often present in environmental and clinical samples at concentrations below the limit of detection (LOD) of molecular diagnostics. Here we report an integrated microfluidic preconcentration and nucleic ... -
3D-printed modular microfluidic device enabling preconcentrating bacteria and purifying bacterial DNA in blood for improving the sensitivity of molecular diagnostics
(MDPI, 2020-02-21)Acceso abiertoMolecular diagnostics for sepsis is still a challenge due to the presence of compounds that interfere with gene amplification and bacteria at concentrations lower than the limit of detection (LOD). Here, we report on the ... -
Non-polynomial Zig-Zag and ESL shear deformation theory to study advanced composites
(Elsevier, 2019-04)Acceso abiertoThe mechanical behavior of advanced composites can be modeled mathematically through unknown variables and Shear Strain Thickness Functions (SSTFs). Such SSTFs can be of polynomial or non-polynomial nature and some parameters ... -
Guillain–Barre syndrome outbreak in Peru: Association with polymorphisms in IL-17, ICAM1, and CD1
(Wiley, 2019-08-28)Acceso abiertoBackground: Guillain–Barre Syndrome (GBS) is considered a complex disorder with significant environmental effect and genetic susceptibility. Genetic polymorphisms in CD1E, CD1A, IL-17, and/or ICAM1 had been proposed as ... -
MIMO fractional order control of a water tank plant
(ASTES Publishers, 2019-12-23)Acceso abiertoThis work implements a MIMO (Multiple Input Multiple Output) FO (Fractional Order) control system for controlling the level and temperature of the water inside a tank by means of two inflow rates: cold and hot water, which ... -
Universal relation with regime transition for sediment transport in fine-grained rivers
(National Academy of Sciences, 2019-12-18)Acceso abiertoFine-grained sediment (grain size under 2,000 μm) builds floodplains and deltas, and shapes the coastlines where much of humanity lives. However, a universal, physically based predictor of sediment flux for fine-grained ... -
Abrasion resistance and toughness of a ductile iron produced by two molding processes with a short austempering
(Elsevier, 2019-06)Acceso abiertoAustempered ductile irons (ADI) have been extensively used in applications that require a high wear resistance. To further improve it, this work analyzes the effects of both two molding conditions and a short austempering ... -
Valvular imaging in the era of feature-tracking: A slice-following cardiac MR sequence to measure mitral flow
(Wiley, 2019-10-25)Acceso abiertoBackground: In mitral valve dysfunction, noninvasive measurement of transmitral blood flow is an important clinical examination. Flow imaging of the mitral valve, however, is challenging, since it moves in and out of the ... -
Synthesis of highly concentrated suspensions of silver nanoparticles by two versions of the chemical reduction method
(MDPI, 2018-12-24)Acceso abiertoIn spite of the widespread use of the chemical reduction method to obtain silver nanoparticles, the nanoparticle yield is often low due to a required addition of small volumes of diluted metal ions to a solution containing ... -
Metabolitos secundarios del liquen Hypotrachyna chicitae
(Sociedad Química del Perú, 2013-06)Acceso abiertoEn el presente trabajo se estudió el liquen Hypotrachyna chicitae, recolectado en el departamento de Junín (Perú). Del extracto con cloroformo se aislaron dos metabolitos mayoritarios, los cuales fueron elucidados por ... -
Determinación de compuestos fenólicos y actividad antioxidante de extractos de alcachofa (Cynara scolymus L.)
(Sociedad Química del Perú, 2013-01)Acceso abiertoComo parte de un proyecto con la empresa Danper Perú, se evaluó el contenido de compuestos fenólicos y la actividad antioxidante de diversos extractos de alcachofa (Cynara scolymus L.), cultivada en el norte del Perú ... -
Análisis de biodiesel preparado a partir de residuos de aceite doméstico, mediante RMN
(Sociedad Química del Perú, 2014-01)Acceso abiertoSe preparó biodiesel a partir de residuos de aceite doméstico, mediante la reacción de transesterificación usando etanol. El rendimiento de la reacción fue del 78%, y el producto obtenido fue caracterizado por sus propiedades ... -
Contactless automated manipulation of mesoscale objects using opto-fluidic actuation and visual servoing
(AIP Publishing, 2014-05)Acceso abiertoThis work describes an automated opto-fluidic system for parallel non-contact manipulation of microcomponents. The strong dynamics of laser-driven thermocapillary flows were used to drag microcomponents at high speeds. ... -
Automated vision-based system for parallel contactless micromanipulation
(Institute of Electrical and Electronics Engineers, 2013-11)Acceso abiertoThis paper presents the automated parallel noncontact manipulation of glass beads ranging from 30 up to 300 μm in size under water. Non-contact micromanipulation is performed by generating controllable laser-induced ... -
A simple and accurate generalized shear deformation theory for beams
(Elsevier, 2015-12)Acceso abiertoThis paper presents a static analysis of functionally graded (FG) single and sandwich beams by using a simple and efficient 4-unknown quasi-3D hybrid type theory, which includes both shear deformation and thickness stretching ... -
Refined and generalized hybrid type quasi-3D shear deformation theory for the bending analysis of functionally graded shells
(Elsevier, 2015-12)Acceso abiertoThe closed-form solution of a generalized hybrid type quasi-3D higher order shear deformation theory (HSDT) for the bending analysis of functionally graded shells is presented. From the generalized quasi-3D HSDT (which ... -
Free vibration of single and sandwich laminated composite plates by using a simplified FSDT
(Elsevier, 2015-11)Acceso abiertoThis paper presents a simplified first order shear deformation theory (FSDT) for laminated composite and sandwich plates. Unlike the existing FSDT, the present one has a novel displacement field which include undetermined ... -
Dynamic analysis of functionally graded plates using a novel FSDT
(Elsevier, 2015-06)Acceso abiertoThe purpose of this paper is to study the vibrational behavior of advanced composite plates by using a novel first shear deformation theory (FSDT). This theory contains only four unknowns, with is even less than the classical ... -
A refined FSDT for the static analysis of functionally graded sandwich plates
(Elsevier, 2015-05)Acceso abiertoThis paper presents a static analysis of functionally graded plates (FGPs) by using a new first shear deformation theory (FSDT). This theory contains only four unknowns, with is even less than the classical FSDT. In this ... -
Thermoelastic behavior of advanced composite sandwich plates by using a new 6 unknown quasi-3D hybrid type HSDT
(Elsevier, 2015-08)Acceso abiertoThis paper presents an analytical solution for the thermoelastic bending analysis of advanced composite sandwich plates by using a new quasi-3D hybrid type HSDT with 6 unknowns which is based on a generalized formulation. ...
