Results 31 to 40 of about 208,891 (348)

Generalized non-coaxial theory based on orthogonal decomposition of stress rate

open access: yesYantu gongcheng xuebao, 2021
In the traditional non-coaxial theories, linear assumption is usually made between non-coaxial plastic strain rate and non-coaxial stress rate, and they are always in the same direction, which is inconsistent with the real non-coaxial deformation ...
WANG Xing 1, 2, KONG Liang 1, 2, LI Xue-feng 3
doaj   +1 more source

A comparison of coaxial and conventional rotor performance [PDF]

open access: yes, 2009
The performance of a coaxial rotor in hover, in steady forward flight, and in level, coordinated turns is contrasted with that of an equivalent, conventional rotor with the same overall solidity, number of blades, and blade aerodynamic properties.
Brown, Brown, Kim, Landgrebe, Newman
core   +1 more source

An adaptor for coaxial circuits [PDF]

open access: yesAnaesthesia, 1977
An adaptor for the conversion of a standard bag mount for coaxial circuits is described.
openaire   +2 more sources

Hovering of coaxial Trirotor helicopter constructed with coaxial mechanism driven by a motor

open access: yesNihon Kikai Gakkai ronbunshu, 2014
This paper proposes a coaxial trirotor helicopter constructed with coaxial mechanism driven by one motor. There two types of trirotor unmanned aerial vehicles (UAVs) are existed.
Yoshihiro TAKITA   +2 more
doaj   +1 more source

Unsteady loads for coaxial rotors in forward flight computed using a vortex particle method [PDF]

open access: yes, 2018
Recent advances in coaxial rotor design have shown benefits of this configuration. Nevertheless, issues related to rotor-head drag, aerodynamic performance, wake interference, and vibration should also be considered.
Barakos, George   +2 more
core   +1 more source

Thresholdless nanoscale coaxial lasers [PDF]

open access: yesNature, 2012
The generation of coherent radiation in nanostructures has attracted considerable interest in recent years owing both to the quantum electrodynamical effects that emerge in small volumes, and to their potential for future applications. The progress towards exploring this size regime, however, has been hindered by the lack of a systematic approach to ...
Khajavikhan, M.   +7 more
openaire   +3 more sources

Resonance Features in the Allowed and Forbidden Bands of Microwave Coaxial Bragg Structures with Periodically Alternating Dielectric Filling [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Физика, 2020
Background and Objectives: Microwave Bragg structures are used to create various types of microwave devices, including tunable resonators, directional couplers, miniature antennas, matched loads, various types of microwave filters with controlled ...
Skripal, Alexander Vladimirovich   +3 more
doaj   +1 more source

Pseudospin excitations in coaxial nanotubes [PDF]

open access: yes, 2010
In a 2DEG confined to two coaxial tubes the `tube degree of freedom' can be described in terms of pseudospin-1/2 dynamics. The presence of tunneling between the two tubes leads to a collective oscillation known as pseudospin resonance.
Fabian, J.   +2 more
core   +2 more sources

Non-Coaxial OAM: Precoding Design, Misaligned Parameter Estimation and Capacity Compensation

open access: yesIEEE Access, 2021
Uniform Circular Antenna (UCA) is a convenient way to generate multiple Orbital Angular Momentum (OAM) beams simultaneously, and OAM-MIMO is promised to be an augmentation to enhance capacity.
Mengnan Jian, Yijian Chen, Guanghui Yu
doaj   +1 more source

Coaxial technique-promoted diagnostic accuracy of CT-guided percutaneous cutting needle biopsy for small and deep lung lesions. [PDF]

open access: yesPLoS ONE, 2018
Coaxial technique is extensively applied to facilitate percutaneous lung lesion biopsy. However, the impact of coaxial technique on diagnostic accuracy remains undecided.
Lu Zhang   +5 more
doaj   +1 more source

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