Results 61 to 70 of about 73,593 (306)

Identification Of Ball Bearing Damage On Induction Motors Through Sound Signal Analysis [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2022
Induction motors are generally used in industry as a drive. Bearing is one part of the motor element that plays an important role because it has the function to support a shaft so that it can rotate without experiencing excessive friction. Bearing damage
Iradiratu Diah Prahmana Karyatanti   +5 more
doaj  

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand   +13 more
wiley   +1 more source

An integrated 256-point complex FFT processor for real-time spectrum analysis and measurement

open access: yes, 1997
This paper describes in detail the design of a custom CMOS Fast Fourier Transform (FFT) processor for computing 256-point complex FFT. The FFT is well suited for real-time spectrum analysis in instrumentation and measurement applications.
Morling, R.C.S.   +5 more
core   +1 more source

Exploring an Alternative to mRNA Vaccine Cold Chain Storage: MRNA‐Lipid Nanoparticle Stability When Dried in a Polymer Matrix

open access: yesAdvanced Functional Materials, EarlyView.
The nanostructure, size, and function of mRNA‐loaded lipid nanoparticles are evaluated before drying, within polymer microneedles, and after rehydration. The results reveal the polymer and LNP loadings required to recover nanostructure and preserve the delivery performance in dry‐state formulations.
Brendan P. Dyett   +19 more
wiley   +1 more source

Simulation of interaction of antennas in the near zone

open access: yesВісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка
Relevance. Obtaining the minimization or maximization of the interaction between the radiating and receiving antennas (or the receiving antenna with fields reflected from some obstacle) due to the orientation and location of the antennas at a certain ...
М. Legenkiy, V. Khrychov
doaj   +1 more source

Development of a vibration monitoring system for rotating machine models using fast fourier transform

open access: yesTeknika, 2021
Judul: Pengembangan sistem pemantauan getaran untuk model mesin berputar menggunakan fast fourier transformTitle: Development of a vibration monitoring system for rotating machine models using fast Fourier transformSering kali terjadi kerusakan mekanis ...
Iip Muhlisin, Fachri Agung, Riki Effendi
doaj   +1 more source

Efficient Memoryless Cordic for FFT Computation

open access: yes, 2007
A new memoryless CORDIC algorithm for the FFT computation is proposed in this paper. This approach calculates the direction of the micro-rotations from the control counter of the FFT, so the area of the rotator hardly depends on the number of rotations ...
Grajal, J.,   +5 more
core   +1 more source

Dipole‐Engineered Conductive Additives for Ultrastable Interphase Evolution in High‐Areal‐Capacity Silicon Anodes

open access: yesAdvanced Functional Materials, EarlyView.
In the work reported herein, dipole‐engineered sulfonated carbon nanofibers enable conductive additives to actively regulate interphase formation in silicon anodes. Polar sulfonyl groups guide electrolyte decomposition to form a compact LiF‐rich interphase while promoting robust integration with silicon.
Song Kyu Kang   +6 more
wiley   +1 more source

Power spectral analysis of occipital area during eyes-closed and eyes-open

open access: yesLiberabit
Background: Power spectral analysis of the occipital cortex is essential for characterizing brain activity during attentional and relaxed states. Objectives: This study aims to develop a predictive model capable of distinguishing between eyes-closed (EC)
Adolfo González-González   +3 more
doaj   +1 more source

Use of linear transverse equalisers and channel state information in combined OFDM-equalisation [PDF]

open access: yes, 2000
The efficiency of a Coded Orthogonal Frequency Division Multiplexing (COFDM) receiver can be improved by use of a Pre-FFT equaliser (PFE). This technique is known as combined OFDM-equalisation.
Nix, AR   +3 more
core   +1 more source

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