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Mostrando ítems 1-20 de 53
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2D amplitude-modulation frequency-modulation - based method for motion estimation
(Institute of Electrical and Electronics Engineers, 2015-02)Acceso abiertoWe present a new approach to compute the motion estimation in digital videos using 2D amplitude-modulation frequency-modulation (AM-FM) methods. The optical flow vectors are computed using an iteratively reweighted norm ... -
2D Instantaneous Frequency-based Method for Motion Estimation using Total Variation
(Institute of Electrical and Electronics Engineers, 2014-12)Acceso abiertoWe present a first approach to a new method to compute the motion estimation in digital videos using the two-dimensional instantaneous frequency information computed using amplitude-modulation frequency-modulation (AM-FM) ... -
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 ... -
A boundary-discontinuous-displacement based Fourier analysis of thick laminated beams via a robust 1D-CUF model
(Elsevier, 2017-04-17)Acceso abiertoThis paper presents an analytical solution for the static analysis of thick laminated rectangular beams with clamped boundary conditions at either or both of the beam's edges. A unified formulation known as Carrera's Unified ... -
A computational methodology to calculate the required power in disc crushers
(Oxford University Press, 2016-09-15)Acceso abiertoThis study aims to contribute to the estimation of power consumption in a disintegration process in disc crushers (fixed and mobile). The study covers the dynamic analysis of forces acting on the particles and the mobile ... -
A multiscale decomposition approach to detect abnormal vasculature in the optic disc
(Elsevier, 2015-07-01)Acceso abiertoThis paper presents a multiscale method to detect neovascularization in the optic disc (NVD) using fundus images. Our method is applied to a manually selected region of interest (ROI) containing the optic disc. All the ... -
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 ... -
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 ... -
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 ... -
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 ... -
Antiproliferative and structure activity relationships of amaryllidaceae alkaloids
(MDPI, 2015-07-30)Acceso abiertoThe antiproliferative activity of a set of seven natural Amaryllidaceae alkaloids and 32 derivatives against four cancer cell lines (A2780, SW1573, T47-D and WiDr) was determined. The best antiproliferative activities were ... -
Assessment of diastolic function and atrial remodeling by MRI – validation and correlation with echocardiography and filling pressure
(WileyAmerican Physiological Society, 2018-09-05)Acceso abiertoAtrial fibrosis can be estimated noninvasively by magnetic resonance imaging (MRI) using late gadolinium enhancement (LGE), but diastolic dysfunction is clinically assessed by transthoracic echocardiography (TTE), and ... -
Assessment of Ichu fibers as non-expensive thermal insulation system for the Andean regions
(Elsevier, 2015-12-01)Acceso abiertoIn the Andean regions, low temperatures (5 to −25 °C) combined with the wind effect give the sensation of extreme cold. Besides, in the rural areas, dwelling structures are very rudimentary, being based on adobe walls and ... -
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 ... -
Bedforms-ATM, an open source software to analyze the scale-based hierarchies and dimensionality of natural bed forms
(Elsevier, 2018-06-30)Acceso abiertoBedforms-ATM (Bed forms analysis toolkit for multiscale modeling) is a software designed to hierarchize and quantify the dimensionality of natural bed forms fields. It comprises four modular applications, namely: (1) wavelet ... -
Boundary discontinuous Fourier analysis of thick beams with clamped and simply supported edges via CUF
(Chinese Journal of Aeronautics, 2017-07-11)Acceso abiertoThis paper presents an analytical solution for static analysis of thick rectangular beams with different boundary conditions. Carrera's Unified Formulation (CUF) is used in order to consider shear deformation theories of ... -
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. ... -
Design of an 10 kVA-45 A automatic static transfer switch module
(Institute of Electrical and Electronics Engineers, 2014-04-08)Acceso abiertoUninterruptible Power Supplies (UPS’s) are designed to provide emergency power when the main power source fails. To avoid this impact and to protect effectively the loads, one solution is to provide a redundant loading ... -
Despeckle filtering for multiscale amplitude-modulation frequency-modulation (AM-FM) texture analysis of ultrasound images of the intima-media complex
(Hindawi Publishing Corporation, 2014-03-09)Acceso abiertoThe intima-media thickness (IMT) of the common carotid artery (CCA) is widely used as an early indicator of cardiovascular disease (CVD). Typically, the IMT grows with age and this is used as a sign of increased risk of ... -
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 ...
