Results 31 to 40 of about 21,207 (144)

Pneumatized inferior turbinate (concha bullosa of inferior turbinate)

Malawi Medical Journal
The nasal cavity structures are prone to different anatomical variations; one of these is concha bullosa, which best known as pneumatization of the nasal turbinate. This pneumatization is a rare phenomenon to in the inferior turbinate. We report the case of an incidental finding of inferior turbinate concha bullosa in a 30- year-old female who ...
Elamaireh, Anas, Alkousheh, Basem, Al-Tarawneh, Abdullah, Al-kofahi, Mohammed   +3 more
openaire   +3 more sources

A Theory for Power Extraction from Passive Accelerators and Confined Flows

Energies, 2020
No accepted fluid theory exists for power extraction from unpressurized confined flow. The absence of a valid model to determine baseline uniform power extraction in confined flows creates difficulties in characterizing the coefficient of power ...
Robert Freda, Bradford Knight, Siddharth Pannir   +2 more
doaj   +1 more source

An Analytical Study on the Performance and Feasibility of Converting a Combined Gas or Gas Propulsion System to a Combined Gas Turbine–Electric and Steam System for a Type 22 Frigate

Journal of Marine Science and Engineering
A Type 22 Broadsword class of frigate uses a combined gas or gas (COGOG) propulsion system that utilizes four different gas turbines, depending on the mode of operation.
Calin Profir, Theodor Mihnea Sirbu, Razvan Edmond Nicoara, Alexandru Hank, Bogdan Catalin Navligu, Cosmin Petru Suciu, Jeni Alina Vilag, Dan Glasberg   +7 more
doaj   +1 more source

Additively Manufactured Dragonfly-Inspired Wings for Bio-Faithful Flapping MAV Development

Biomimetics
This work presents a first-iteration bio-faithful dragonfly-inspired wing designed for future flapping micro air vehicle (MAV) applications. Using high-resolution imaging, the natural venation pattern of fore- and hindwings was reconstructed in CAD and ...
Emilia Georgiana Prisăcariu, Oana Dumitrescu, Sergiu Strătilă, Mihail Sima, Claudia Săvescu, Iulian Vlăducă, Cleopatra Cuciumita   +6 more
doaj   +1 more source

Middle Turbinate Osteoma

Clinical and Experimental Otorhinolaryngology, 2010
Osteoma is the most common benign tumor of the paranasal sinuses. Turbinate osteomas are very rare and only four middle turbinate, one superior turbinate and one inferior turbinate osteoma cases have been reported. We present a rare case of osteoma of the left middle turbinate in a patient presented with unilateral nasal obstruction and epiphora that ...
Ahmad Daneshi, Maryam Jalessi, Ashkan Heshmatzade-Behzadi   +2 more
openaire   +3 more sources

Performance and Uncertainty Analysis of Digital vs. Analog Pressure Scanners Under Static and Dynamic Conditions

Eng
Dynamic pressure measurement is an important component in the turbo engine testing process. This paper presents a comparative analysis between two types of multichannel electronic pressure measurement systems, commonly known as pressure scanners, used ...
Roxana Nicolae, Constantin-Daniel Oancea, Rares Secareanu, Daniel Lale   +3 more
doaj   +1 more source

Laser Power and Scan Speed Effects on Density, Surface Quality, and Mechanical Properties of PBF-LB/M Ti-6Al-4V

Crystals
This study investigates how laser power–scan speed combinations influence densification, surface quality, and mechanical performance of Ti-6Al-4V parts fabricated by Powder Bed Fusion–Laser Beam/Metal (PBF-LB/M) on a DMG MORI LASERTEC 30 SLM (2nd ...
Alexandru Paraschiv, Adrian Bibis, Romica Constantin Stoica, Sebastian-Gabriel Bucaciuc, Claudiu Visan, Florina Branzoi   +5 more
doaj   +1 more source

A Study on the Wind Energy Potential in the Romanian Coastal Environment

Journal of Marine Science and Engineering, 2019
At the European level, offshore wind projects are already considered a competitive market. Nevertheless, this is not yet the case of the enclosed sea basins, such as the Black Sea, where no offshore wind farm is operating at this moment.
Florin Onea, Liliana Rusu
doaj   +1 more source

Evaluation of Transient Response of Turbochargers and Turbines Using Database Method for the Nonlinear Forces of Journal Bearings

Lubricants, 2019
The paper extents the fluid film bearing database method to arbitrary fixed bearing profiles including floating ring bearings. The method is applied to evaluate rotordynamic response of an automotive turbocharger, modeled as rigid rotor, and of a turbine-
Athanasios Chasalevris, Jean-Charles Louis   +1 more
doaj   +1 more source

ABC’s Bird-Smart Wind Energy Campaign: Protecting Birds from Poorly Sited Wind Energy Development

Human-Wildlife Interactions, 2017
This article summarizes American Bird Conservancy’s (ABC’s) strategies and goals for achieving Bird-Smart wind energy in the United States. We describe the current and projected impact of wind energy development on birds and bats in the United States. We
Michael Hutchins, Mike Parr, Darin Schroeder   +2 more
doaj   +1 more source