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Researchers find topological phenomena at high technologically relevant frequencies（图）
高技术 相关频率 拓扑现象
2023/7/11
New research published in Nature Electronics describes topological control capabilities in an integrated acoustic-electronic system at technologically relevant frequencies. This work paves the way for...
WMO calls for protection of radio frequencies vital to weather forecasts
Weather Forecast
2019/10/25
The World Meteorological Organization is calling on governments to protect radio frequencies allocated to Earth observation services which are vital for weather forecasts and long-term climate change ...
Allele frequencies in loci controlling coat colour in Polish Coldblood horses
generation population genetic structure test mating
2018/11/23
The objective of this study was to estimate the frequencies of alleles which produce coat colour in Polish Coldblood horse population, and to verify the hypothesis that coat colour is not considered i...
A Solvatochromic Model Calibrates Nitriles' Vibrational Frequencies to Electrostatic Fields
Solvatochromic Model Calibrates Vibrational Frequencies Electrostatic Fields
2016/5/25
Electrostatic interactions provide a primary connection between a protein's three-dimensional structure and its function. Infrared probes are useful because vibrational frequencies of certain chemical...
Genotype and Allelic Frequencies of a Newly Identified Mutation Causing Blindness in Jordanian Awassi Sheep Flocks
Awassi Sheep, Day Blindness, CNGA3 Gene, PCR- RFLP
2016/5/9
A total of 423 blood samples were collected (during 2009 and 2010) from all the ram holdings at three major Jordanian governmental Awassi breeding stations (Al-Khanasry, Al-Mushairfa and Al-Fjaje) and...
Factor frequencies in generalized Thue-Morse words
Factor frequencies generalized Thue-Morse words Combinatorics
2011/9/20
Abstract: We describe factor frequencies of the generalized Thue-Morse word t_{b,m} defined for integers b greater than 1, m greater than 0 as the fixed point starting in 0 of the morphism \phi_{b,m} ...
Oscillations of hot, young neutron stars: Gravitational wave frequencies and damping times
Oscillations of hot young neutron stars
2011/7/21
We study how the frequencies and damping times of oscillations of a newly born, hot proto-neutron star depend on the physical quantities which characterize the star quasi-stationary evolution which fo...
Natural frequencies of cracked functionally graded material plates by the extended finite element method
Mindlin plate theory vibration partition of unity methods extended finite element method
2011/9/15
Abstract: In this paper, the linear free flexural vibration of cracked functionally graded material plates is studied using the extended finite element method. A 4-noded quadrilateral plate bending el...
Characterisation of the non-Gaussianity of radio and IR point-sources at CMB frequencies
ology: Cosmic Microwave Background, large scale structures Galaxiesstatistics, Infrared: galaxies Radio continuum: galaxies Methods: statistical
2011/10/8
The present study focuses on the characterisation of the non-Gaussianity produced by radio point-sources and, for the first time, by infrared sources in the frequency range of the CMB from 30 to 350 G...
Factor frequencies in languages invariant under more symmetries
Factor frequencies languages invariant Combinatorics
2011/8/24
Abstract: The number of frequencies of factors of length $n+1$ in a recurrent aperiodic infinite word does not exceed $3\Delta \C(n)$, where $\Delta \C (n)$ is the first difference of factor complexit...
Scattering characteristics of high-resolution meteor head echoes detected at multiple frequencies
multiple frequencies high-resolution meteor head
2017/3/22
Meteor data collected at the Kwajalein Missile Range (KMR) during the peak of the
1998 Leonid storm comprise the only simultaneous observations of meteor head echoes
and trails using seven frequenci...
Kernel Density Estimation of Tropical Cyclone Frequencies in the North Atlantic Basin
Atlantic Tropical Cyclone Frequencies Decadal Centroid Patterns
2013/3/6
Previous research has identified specific areas of frequent tropical cyclone activity in the North Atlantic basin. This study examines long-term and decadal spatio-temporal patterns of Atlantic tropic...
Polarised foreground removal at low radio frequencies using rotation measure synthesis: Uncovering the signature of hydrogen reionisation
cosmology observation cosmology theory di use radiation nstrumentation:
2010/11/12
Measurement of redshifted 21-cm emission from neutral hydrogen promises to be the most e ective method for studying the reionisation history of hydrogen and,indirectly, the rst galaxies. These studie...
Quasi-normal frequencies: Semi-analytic results for highly damped modes
Quasi-normal frequencies Semi-analytic highly damped modes
2010/12/20
Black hole highly-damped quasi-normal frequencies (QNFs) are very often of the form !n = (offset) + in (gap). We have investigated the genericity of this phenomenon for the Schwarzschild–deSitter (SdS...
Dynamical energy analysis for built-up acoustic systems at high frequencies
Dynamical energy analysis built-up acoustic systems high frequencies
2010/12/16
Standard methods for describing the intensity distribution of mechanical and acoustic wave fields in the high frequency asymptotic limit are often based on flow transport equations.