Results 91 to 100 of about 448,431 (274)

Corpus Aristotelicum. Problems, concerned with music. Introduction, Russian translation and notes [PDF]

open access: yesSCHOLE, 2012
A collection of questions and answers on the subject of music, Book XIX of the Aristotelian vast Problemata, translated into the Russian for the first time, was compiled, as the majority of scholars agree, in Lyceum during and after Aristotle's time, in ...
Andrey Sсhetnikov
doaj  

Rotor Slot Permeance Harmonics under Distorted Air-Gap Flux Waveform for Cage Induction Motors [PDF]

open access: yes, 1991
The air-gap flux waveform for a cage induction machine is not sinusoidal in shape and contains various harmonics, including the phase-belt harmonics, slot magnetomotive force (mmf) harmonics, slot permeance harmonics, and saturation harmonics.
Hsu, J.S., Liou, S.S., Weldon, W.F.
core  

Azimuthal anisotropy: the higher harmonics

open access: yes, 2004
We report the first observations of the fourth harmonic (v_4) in the azimuthal distribution of particles at RHIC. The measurement was done taking advantage of the large elliptic flow generated at RHIC.
Adams, J.   +359 more
core   +3 more sources

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

open access: yesAdvanced Functional Materials, EarlyView.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To   +5 more
wiley   +1 more source

Strategies for Harmonic Mitigation in Water Pumping Systems Using Neutrosophic Logic [PDF]

open access: yesNeutrosophic Sets and Systems
This study analyzed harmonic contamination in Quillán 1 and Quillán 2 pumping stations, characterizing the electrical system conditions and proposing solutions that addressed actual operational requirements.
Jefferson A. Porras   +3 more
doaj  

The Impact of the Load Side Parameters on PC Cluster's Harmonics Emission

open access: yesAdvances in Electrical and Computer Engineering, 2011
Harmonics current emission from personal computers (PCs) is of special interest to power quality researchers, due to their wide spread application and the fact that they are usually concentrated in large groups (clusters).
KATIC, V. A.   +3 more
doaj   +1 more source

Growth of Millimeter‐Sized BaTaO2N Single Crystals by an NH3‐Assisted BaCl2 Flux Method

open access: yesAdvanced Functional Materials, EarlyView.
Millimeter‐sized BaTaO2N single crystals are successfully grown from a BaCl2 flux under NH3 flow. Their comprehensive characterization, including dielectric properties, is demonstrated, and the possible growth mechanisms are discussed. Abstract Perovskite‐type oxynitrides have attracted considerable attention due to their excellent photocatalytic ...
Ginji Harada   +2 more
wiley   +1 more source

Design and Analysis of Three-Phase Three-Level PWM Inverter [PDF]

open access: yes, 2010
Design of three-phase three level PWM inverter and analysis of the output current harmonics are presented in this paper. The three-level inverter is designed to supply three-phase load and it is controlled by FPGA under several modulation techniques ...
Dahono, Pekik Argo
core  

Local Thermal Conductivity Patterning in Rotating Lattice Crystals of Anisotropic Sb2S3

open access: yesAdvanced Functional Materials, EarlyView.
Microscale control of thermal conductivity in Sb2S3 is demonstrated via laser‐induced rotating lattice crystals. Thermal conductivity imaging reveals marked thermal transport anisotropy, with the c axis featuring amorphous‐like transport, whereas in‐plane directions (a, b) exhibit 3.5x and 1.7x larger thermal conductivity.
Eleonora Isotta   +13 more
wiley   +1 more source

Self‐Trapped Hole Migration and Defect‐Mediated Thermal Quenching of Luminescence in α‐ and β‐Ga2O3

open access: yesAdvanced Functional Materials, EarlyView.
Temperature‐dependent photoluminescence and first‐principles calculations reveal self‐trapped hole migration as the microscopic origin of thermal quenching in α‐ and β‐Ga2O3. The low migration barrier in α‐Ga2O3 enables defect trapping and enhances blue luminescence, while the higher barrier in β‐Ga2O3 preserves ultraviolet emission at elevated ...
Nima Hajizadeh   +11 more
wiley   +1 more source

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