Results 21 to 30 of about 177,961 (269)

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 Atomic Force Microscope Tweezers [PDF]

open access: yes, 2010
We demonstrate coaxial atomic force microscope (AFM) tweezers that can trap and place small objects using dielectrophoresis (DEP). An attractive force is generated at the tip of a coaxial AFM probe by applying a radio frequency voltage between the center
Aguilar, J. A.   +2 more
core   +2 more sources

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

Hover performance analysis of coaxial Mini unmanned aerial vehicle for applications in mountain terrain

open access: yesAviation, 2022
Due to its compactness, agility, good hover performance, and ease of carriage, coaxial rotor Mini UAV is apt for various military and civilian applications in mountain terrain.
Ramesh P. S., Jeyan J. V. Muruga Lal
doaj   +1 more source

Comparative study of air-core and coaxial Bragg fibers: single-mode transmission and dispersion characteristics [PDF]

open access: yes, 2001
Using an asymptotic formalism we developed in an earlier paper, we compare the dispersion properties of the air-core Bragg fiber with those of the coaxial Bragg fiber.
Ouyang, George, Xu, Yong, Yariv, Amnon
core   +1 more source

Research on an Identification Method for Wheelset Coaxial Wheel Diameter Difference Based on Trackside Wheelset Lateral Movement Detection

open access: yesSensors, 2023
The wheelset coaxial wheel diameter difference is one of the most common wheel faults of railway vehicles. The existence of the wheelset coaxial wheel diameter difference may lead to the off-load operation of vehicles, resulting in abnormal wheel tread ...
Xinyu Peng   +3 more
doaj   +1 more source

THE STUDY ON THE PRIMARY SEALING WITH COAXIAL ROUND-SHAPED SURFACES [PDF]

open access: yesFiabilitate şi Durabilitate, 2016
The paperwork studies the way of calculation of the interstitial pressure with Reynolds equation for the particular case of the primary sealing with coaxial round-shaped surfaces, one fixed and the other one rotating around Oz axis.
Monica BÂLDEA   +3 more
doaj  

Coaxial LiCoO2@Li2MnO3 Nanoribbon as a High Capacity Cathode for Lithium Ion Batteries

open access: yesInternational Journal of Electrochemical Science, 2014
Coaxial LiCoO2@Li2MnO3 nanoribbons prepared by a new method have been characterized with X- ray diffraction, field emission scanning electron and transmission electron microscopy.
F.X. Wang   +5 more
doaj   +1 more source

Design Aspects of Conical Coaxial Magnetic Gears

open access: yesEnergies, 2023
In this paper, a new design of a conical coaxial magnetic gear was proposed. Conical magnetic gears are considered a logical link between the radial- and axial-field coaxial designs.
Valentin Mateev   +2 more
doaj   +1 more source

A rational approach to comparing the performance of coaxial and conventional rotors [PDF]

open access: yes, 2009
The merit, in terms of its efficiency and performance, of the twin, contrarotating coaxial rotor configuration over the more conventional single rotor system has long been a point of contention.
Brown, R.E., Kim, Hyo Wan
core   +1 more source

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