arXivAir ducts are integral to modern buildings but are challenging to access for inspection. Small quadrotor drones offer a potential solution, as they can navigate both horizontal and vertical sections and smoothly fly over debris. However, hovering inside air ducts is problematic due to the airflow generated by the rotors, which recirculates inside the ...
arxiv
Mode propagation and attenuation in lined ducts [PDF]
arXiv, 2014 Optimal impedance for each mode is an important concept in an infinitely long duct lined with uniform absorption material. However it is not valid for finite length linings. This is because that the modes in lined ducts are not power-orthogonal; the total sound power is not equal to the sum of the sound power of each mode; cross-power terms may play ...
arxiv
Balloon Catheter Dilation for Treatment of Older Children With Nasolacrimal Duct Obstruction [PDF]
, 2002 Gregg T. Lueder
openalex +1 more source
Late Probing for Congenital Nasolacrimal Duct Obstruction
Journal of Ophthalmic & Vision Research, 2009 <!--[if gte mso 9]><xml> Normal 0 false false false MicrosoftInternetExplorer4 </xml><![endif]--><!--[if gte mso 9]><xml> </xml><![endif]--> <!--[if gte mso 10]> <style> /* Style ...
Mohammad Abrishami +3 more
doaj
Detonation propagation in three-dimensional continuous curved ducts [PDF]
arXivIn this paper, 3D detonation numerical studies are conducted using reactive Euler equations in both straight and curved channels. These simulations are compared to investigate the response of detonation to curvature within infinitely long square ducts.
arxiv
The rate of symptomatic improvement of congenital nasolacrimal duct obstruction in Japanese infants treated with conservative management during the 1st year of age [PDF]
, 2008 This study aimed to examine the rate of symptomatic improvement of congenital nasolacrimal duct obstruction (CNLDO) in Japanese infants treated with conservative management within the 1st year of age.
Iwaki, Masayoshi +4 more
core +2 more sources
Adult Nasolacrimal Duct Mucocele [PDF]
Archives of Ophthalmology, 2003 S. Alam +5 more
openaire +3 more sources
Multimodal nonlinear acoustics in two- and three-dimensional curved ducts [PDF]
arXivWe develop a weakly nonlinear model of duct acoustics in two and three dimensions (without flow). The work extends the previous work of McTavish & Brambley (2019, J. Fluid Mech. 875, pp. 411-447) to three dimensions and significantly improves the numerical efficiency.
arxiv
Differential diagnoses, investigation, and management of a periocular swelling close to the nasolacrimal duct in a horse – A case report of Dacryops [PDF]
, 2015 Allgoewer +13 more
core +1 more source
A rare solitary fibrous tumour of the lacrimal sac presenting as acquired nasolacrimal duct obstruction [PDF]
, 2003 Shimon Rumelt +3 more
openalex +1 more source