Results 11 to 20 of about 64,617 (315)

Fish bone migration into urachus mimicking urachal malignancy: A rare case report [PDF]

open access: yesRadiology Case Reports
Foreign bodies can find their way into and around the bladder usually via urethra by self insertion, migration from surrounding structures and by penetrating trauma. The clinical presentation being varied, symptoms nonspecific and history often concealed
Sajad Ahmad Para, MS, M. Ch(Urology)   +5 more
doaj   +2 more sources

Mean Drift Wave Forces on Arrays of Bodies Surrounded by Thin Porous Surfaces

open access: yesJournal of Marine Science and Engineering, 2023
A semi-analytical solution is presented for the evaluation of mean drift wave forces on arrays of structures composed of impermeable vertical cylindrical bodies and surrounded by thin, porous surfaces.
Dimitrios N. Konispoliatis   +1 more
doaj   +2 more sources

Characteristic Mode Analysis applied to antennas [PDF]

open access: yesRevista Brasileira de Ensino de Física, 2020
This paper introduces the Characteristic Mode Analysis in the computation of electromagnetic resonant modes in conducting bodies. Canonical cases (thin wire and a rectangular plate) are analyzed, along with real-world complex structures, a mobile phone ...
Marcelo B. Perotoni   +2 more
doaj   +1 more source

Fracture mechanics analysis of two-dimensional cracked thin structures (from micro- to nano-scales) by an efficient boundary element analysis

open access: yesResults in Applied Mathematics, 2021
In this paper, the boundary element method (BEM) based on the elasticity theory is developed for fracture analysis of cracked thin structures with the relative thickness-to-length ratio in the micro- or nano-scales.
Yan Gu, Jun Lei
doaj   +1 more source

Thin structured rigid body for acoustic absorption [PDF]

open access: yesApplied Physics Letters, 2017
We present a thin acoustic metamaterial absorber, comprised of only rigid metal and air, that gives rise to near unity absorption of airborne sound on resonance. This simple, easily fabricated, robust structure comprising a perforated metal plate separated from a rigid wall by a deeply subwavelength channel of air is an ideal candidate for a sound ...
T. A. Starkey   +4 more
openaire   +2 more sources

Difficulties in Differentiating Coronaviruses from Subcellular Structures in Human Tissues by Electron Microscopy

open access: yesEmerging Infectious Diseases, 2021
Efforts to combat the coronavirus disease (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have placed a renewed focus on the use of transmission electron microscopy for identifying coronavirus in tissues.
Hannah A. Bullock   +4 more
doaj   +1 more source

Sedimentary Characteristics of Lacustrine Beach-Bars and Their Formation in the Paleogene Weixinan Sag of Beibuwan Basin, Northern South China Sea

open access: yesEnergies, 2022
Beach-bar reservoirs have been promising hydrocarbon-bearing exploration advances in the Beibuwan Basin, especially in the WZ12-2 area within the Weixinan sag.
Jie He   +5 more
doaj   +1 more source

Validation of variants and structural parameters for mining systems for thin ore bodies

open access: yesIOP Conference Series: Earth and Environmental Science, 2020
Abstract The current mining of thin and steeply dipping ore bodies features depth down to 700–1100 m below ground surface, increased dimension of various-purpose pillars and, as consequence, higher mineral loss and overall degradation of mining efficiency.
SA Shchukin, AI Konurin, SA Neverov
openaire   +1 more source

Mechanics of Viscoelastic Thin-Walled Structures [PDF]

open access: yes, 2013
Thin-walled structures made of polymers and reinforced polymer composites are prominent candidates for constructing large lightweight structures. A major challenge in designing polymer-based thin-walled structures is their time and temperature dependent ...
Kwok, Kawai
core   +1 more source

PARAMETERIZATION OF STRUCTURE ELEMENTS OF COMPLEX GEOMETRY

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2017
Experimental approach of parametrization of three-dimensional bodies and thin-walled elements of structures of complex geometry is considered Algorithm for constructing a spa- tial network, as well as determining the coordinates, components of the metric
SAMAT NUKHOVICH YAKUPOV   +2 more
doaj   +1 more source

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