Results 21 to 30 of about 1,105 (131)

Single- and Multi-carrier Quadrature Amplitude Modulation: Principles and Applications for Personal Communications, WATM and Broadcasting: 2nd [PDF]

, 2000
Single- and Multi-carrier Quadrature Amplitude Modulation Principles and Applications for Personal Communications, WLANs and Broadcasting L. Hanzo Department of Electronics and Computer Science, University of Southampton, UK W.
Webb, W.T., Keller, T., Hanzo, L.
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Quantitative analysis of channel characteristics of distributive fluvial systems

Sedimentology, Volume 73, Issue 5, Page 1606-1630, August 2026.
ABSTRACT Distributive fluvial systems (DFSs) are characterised by a radial distributive channel pattern in planform and dominate modern‐day sedimentary basins. Where aggradation occurs, such as in sedimentary basins, there is increased preservation potential, and therefore, DFSs are hypothesised to constitute a significant portion of the continental ...
Kwetishe Joro Danjuma, Amanda Owen, Tobias Dalton, Richard Williams, Richard Boothroyd   +4 more
wiley   +1 more source

The investigation of motor current signals from a centrifugal pump for fault diagnosis [PDF]

, 2014
In this paper, motor current signals from electrical control systems, rather than installing additional measurement systems, are characterised for the fault diagnosis of centrifugal pumps.
Chen, Zhi, Gu, Fengshou, Ball, Andrew, Albraik, Abdulrahman, Feng, Guojin, Tian, Xiange   +5 more
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Basics and Perspectives of Visible and Near‐UV Light‐Induced Defluorination of Perfluoroalkylsubstances by Semiconductor Nanocrystals

ChemPhotoChem, Volume 10, Issue 6, June 2026.
This review highlights recent advances in the light‐driven destruction of persistent per‐ and polyfluoroalkyl substances (PFASs) using semiconductor nanocrystals. By exploiting nonlinear photophysical and photochemical processes, these nanomaterials harness energy‐efficient visible and near‐UV light‐emitting diodes (LEDs) to drive extreme reduction ...
Yoichi Kobayashi
wiley   +1 more source

The method of non-orthogonal frequency division multiplexing on the basic of the Hartley transform with quadrature amplitude modulation of the frequency carriers [PDF]

, 2008
В статье рассмотрен метод неортогональной частотной дискретной модуляции на основе преобразования Хартли с квадратурной амплитудной модуляцией частотных несущих.
В.И. Слюсар, В.І. Слюсар, V.I. Slyusar, K.A. Vasilyev, К.А. Васильев, К.О. Васильєв   +5 more
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Effects of otitis media with effusion on auditory temporal resolution. [PDF]

, 2005
OBJECTIVE: There is mounting evidence to suggest that otitis media with effusion (OME) is associated with auditory processing deficits that persist beyond the resolution of the peripheral hearing loss.
Moore, David R, Douglas E. H. Hartley, Hartley, Douglas E H, David R. Moore   +3 more
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Seasonal Flooding Disrupts Expected Depth‐Dependent Patterns of Mineral Associated Carbon, Nitrogen, and Phosphorus Across Land Uses

Global Change Biology, Volume 32, Issue 4, April 2026.
The subsoil (< 30 cm) stores ~25%–70% of soil organic matter (OM), rendering it critical for carbon (C), nitrogen (N), and phosphorus (P) persistence. Our understanding of how OM cycles down the soil profile largely comes from well‐drained soils. Yet seasonal flooding can destabilize mineral‐associated organic matter (MAOM), the most persistent OM pool,
Hannah P. Lieberman, Christian von Sperber, Rachael Harman‐Denhoed, A. Stuart Grandy, Cynthia M. Kallenbach   +4 more
wiley   +1 more source

RESEARCH OF BOUNDARIES OF A FREQUENCY MULTIPLEXING OF N-OFDM SIGNALS ON THE BASIC OF THE HARTLEY TRANSFORM WITH DIFFERENT MODULATION FORMATS OF THE FREQUENCY CARRIERS [PDF]

, 2012
В статье рассмотрены особенности формирования сигналов N-OFDM на основе преобразования Хартли с различными видами модуляции частотных несущих. Проведен анализ результатов исследований границ частотного уплотнения сигналов N-OFDM на основе преобразования ...
K.A. Vasilyev, К.А. Васильев, К.О. Васильєв   +2 more
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Elliptical Orbit Representation for the Annual Evolution of the Northern Hemisphere Stratospheric Polar Vortex. Part I: Diagnosing Interannual Variability

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 5, 16 March 2026.
Abstract Using a single annual frequency with each year defined from July 1 to June 30 of the following calendar year, this study fits an ellipse to the yearly phase space trajectory of the daily time series of MU (stratospheric mass‐weighted zonally integrated zonal wind at 60°N) and M (total polar stratospheric air mass over 60–90°N) to represent the
Michael Secor, Jie Sun, Yueyue Yu, Zhaohua Wu, Ming Cai   +4 more
wiley   +1 more source

A new method of vibration analysis for the diagnosis of impeller in a centrifugal pump [PDF]

, 2014
Centrifugal pumps are widely used in many important industries such as power generation plants, chemical processes and petroleum refiners. The condition monitoring of centrifugal pumps is highly regarded by many researchers and users to minimize ...
Chen, Zhi, Gu, Fengshou, Ball, Andrew, Abdulrahman, Albraik, Tian, Xiange, Hamomd, Osama   +5 more
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