Results 51 to 60 of about 393,077 (313)

Length correction of 2D discontinuities or perforations at large wavelengths and for linear acoustics [PDF]

open access: yesActa Acustica united with Acustica, 104(2), 2018, pp. 243-250 (8), 2018
This work focuses on the length correction due to radiation effect of a duct discontinuity or at the surface of a perforated plate in the linear acoustic domain and at large wavelengths. Two results are obtained from the comparison of models used in the literature for different geometries of duct discontinuities or perforations.
arxiv   +1 more source

Analysis of Lacrimal Duct Morphology from Cone-Beam Computed Tomography Dacryocystography in a Japanese Population

open access: yesClinical Ophthalmology, 2022
Jutaro Nakamura,1,2 Tomoyuki Kamao,1 Arisa Mitani,1 Nobuhisa Mizuki,2 Atsushi Shiraishi1 1Department of Ophthalmology, Ehime University Graduate School of Medicine, Toon, Ehime, 791-0295, Japan; 2Department of Ophthalmology and Visual Science, Yokohama ...
Nakamura J   +4 more
doaj  

Deep Learning for Classifying and Characterizing Atmospheric Ducting within the Maritime Setting [PDF]

open access: yes, 2020
Real-time characterization of refractivity within the marine atmospheric boundary layer can provide valuable information that can potentially be used to mitigate the effects of atmospheric ducting on radar performance. Many duct characterization models are successful at predicting parameters from a specific refractivity profile associated with a given ...
arxiv   +1 more source

Outcomes of Congenital Nasolacrimal Duct Obstruction Surgery Converted into Balloon Dilation and Silicone Intubation due to Probing Difficulty [PDF]

open access: yes, 2022
Background. To report the outcomes of balloon catheter dilatation and silicone intubation as a sequential secondary surgery under the same anesthesia, a stepwise approach for congenital nasolacrimal duct obstruction (NLDO) when probing and irrigation as ...
Achiron, Asaf   +5 more
core   +1 more source

Dependence of radioactive iodine-131 capture by the lacrimal ducts on the tear production level

open access: yesIndian Journal of Ophthalmology, 2023
Purpose: Secondary acquired lacrimal duct obstruction (SALDO) is one of the complications of radioiodine therapy. SALDO is formed a few months after therapy if there is a sufficient uptake of radioactive iodine by the nasolacrimal duct.
Vasily D Yartsev   +6 more
doaj   +1 more source

Nasolacrimal duct obstruction: the relationship with nasal allergy [PDF]

open access: yes, 2017
Nasolacrimal duct obstruction (NLDO) is a common event in clinical practice. The authors, all members of the Italian Society of Rhinology, analysed 100 cases from different ENT Departments.
Cemal Cingi   +5 more
core   +1 more source

Utilizing bifurcations to separate particles in spiral inertial microfluidics [PDF]

open access: yes, 2022
Particles suspended in fluid flow through a closed duct can focus to specific stable locations in the duct cross-section due to hydrodynamic forces arising from the inertia of the disturbed fluid. Such particle focusing is exploited in biomedical and industrial technologies to separate particles by size.
arxiv   +1 more source

Nasolacrimal Duct Neoplasm in a Bitch [PDF]

open access: yes, 2022
Background: Nasolacrimal duct tumors are divided into primary and secondary, with primary tumors being rare in all species. Secondary involvement of the lacrimal sac and duct can occur from any skin lesion involving the eyelid and/or conjunctiva and from
da Costa Junior, Augusto Roberto   +5 more
core   +1 more source

Corneal ulcers with non-infectious appearance caused by nasolacrimal duct obstruction or canaliculitis

open access: yesAmerican Journal of Ophthalmology Case Reports, 2022
Purpose: To describe the clinical features of corneal ulcers with non-infectious appearance due to nasolacrimal disease in a retrospective case series.
Atsuko Ishimoto   +5 more
doaj  

On turbulent friction in straight ducts with complex cross section: the wall law and the hydraulic diameter [PDF]

open access: yes, 2018
We develop predictive formulas for friction resistance in ducts with complex cross-sectional shape based on the use of the log law and neglect of wall shear stress nonuniformities. The traditional hydraulic diameter naturally emerges from the analysis as the controlling length scale for common duct shapes as triangles and regular polygons. The analysis
arxiv   +1 more source

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