Results 51 to 60 of about 236,638 (182)

Evaluation of Topological Consistency in CityGML

open access: yesISPRS International Journal of Geo-Information, 2019
Boundary representation models are data models that represent the topology of a building or city model. This leads to an issue in combination with geometry, as the geometric model necessarily has an underlying topology.
Anna Giovanella   +2 more
doaj   +1 more source

Tuning of Plasmonic Resonances in the Near Infrared Spectrum Using a Double Coaxial Aperture Array

open access: yesIEEE Photonics Journal, 2018
Plasmonic filters are excellent candidates for spectral filters in the near infrared spectrum. Such filters require only a single nanoscale thickness perforated metal film that can be tailored to tune the location of the transmission maximum.
Miao Sun   +5 more
doaj   +1 more source

Synchronous imaging of pelvic geometry and muscle morphometry: a pilot study of pelvic retroversion using upright MRI

open access: yesScientific Reports, 2021
This study investigated feasibility of imaging lumbopelvic musculature and geometry in tandem using upright magnetic resonance imaging (MRI) in asymptomatic adults, and explored the effect of pelvic retroversion on lumbopelvic musculature and geometry ...
Noor Shaikh   +7 more
doaj   +1 more source

HeartMate 3 Explantation Using Felt Plug for Ventriculotomy Occlusion

open access: yesMethodist DeBakey Cardiovascular Journal, 2023
Left ventricular assist devices (LVAD) can be utilized for heart failure patients as a bridge to transplant, bridge to destination, or bridge to recovery.
Melissa Medina   +7 more
doaj   +1 more source

Association between left ventricular remodeling and coronary chronic total occlusion in hypertensive coronary artery disease patients

open access: yesScientific Reports
Hypertensive left ventricular (LV) remodeling may influence coronary artery pathology due to anatomical proximity, yet its association with coronary chronic total occlusion (CTO) remains unclear. This cross-sectional, hypothesis-generating study included
Wujian He   +4 more
doaj   +1 more source

Two-Dimensional Investigation of the Fundamentals of OGV Buffeting

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2022
The increased demands of compact modern aero engine architectures have highlighted the problem of outlet guide vane (OGV) buffeting in off-design conditions.
Jonah Harris   +2 more
doaj   +1 more source

The Terwilliger Algebra of the Incidence Graphs of Johnson Geometry [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2013
In 2007, Levstein and Maldonado  computed the Terwilliger algebra of the Johnson graph $J(n,m)$ when $3m\leq n$. It is well known that the halved graphs of the incidence graph $J(n,m,m+1)$ of Johnson geometry are Johnson graphs. In this paper, we determine the Terwilliger algebra of $J(n,m,m+1)$ when $3m\leq n$, give two bases of this algebra, and ...
Qian Kong, Benjian Lv, Kaishun Wang
openaire   +3 more sources

Properties of the defect modes in 1D lossy photonic crystals containing two types of negative-index-material defects

open access: yes, 2013
In this paper, the characteristic matrix method is employed to theoretically investigate the propagation of electromagnetic waves through one-dimensional defective lossy photonic crystals (PCs) composed of negative index materials (NIMs) and positive ...
Aghajamali, Alireza   +3 more
core   +1 more source

Effect of Deposition Angle and Arc Current on the Structure and Optical Properties of Ti Coatings Deposited by Cathodic Arc Evaporation

open access: yesMetals
This study investigates the effects of deposition angle and arc current on the surface morphology and optical response of Ti coatings obtained by unfiltered cathodic arc evaporation for spectrally selective solar-thermal applications.
Iulian Pana   +7 more
doaj   +1 more source

A new Variable Curvature concept for Linear Fresnel Reflectors Solar Concentrating Systems [PDF]

open access: yes, 2017
In a Linear Fresnel Reflector (LFR) solar concentrating system [1] a series of single axis linear reflectors target the sunrays to a longitudinal facedown receiver on top of a fixed structure. The LFR technology offers simplicity and reduced costs when
Carrillo-Andres, Antonio   +3 more
core  

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