Results 21 to 30 of about 1,444 (49)

Relationship between the Molecular Geometry and the Radiative Efficiency in Naphthyl-Based Bis-Ortho-Carboranyl Luminophores

open access: yesMolecules, 2022
The efficiency of intramolecular charge transfer (ICT)-based emission on π-aromatic-group-appended closo-ortho-carboranyl luminophores is known to be affected by structural fluctuations and molecular geometry, but investigation of this relationship has ...
Sanghee Yi   +5 more
doaj   +1 more source

Reversed HILIC Gradient: A Powerful Strategy for On-Line Comprehensive 2D-LC

open access: yesMolecules, 2023
The aim of the present work is to evaluate the possibilities and limitations of reversed hydrophilic interaction chromatography (revHILIC) mode in liquid chromatography (LC). This chromatographic mode consists of combining a highly polar stationary phase
Soraya Chapel   +3 more
doaj   +1 more source

Some results on generalized finite operators and range kernel orthogonality in Hilbert spaces

open access: yesDemonstratio Mathematica, 2021
Let ℋ{\mathcal{ {\mathcal H} }} be a complex Hilbert space and ℬ(ℋ){\mathcal{ {\mathcal B} }}\left({\mathcal{ {\mathcal H} }}) denotes the algebra of all bounded linear operators acting on ℋ{\mathcal{ {\mathcal H} }}.
Mesbah Nadia   +2 more
doaj   +1 more source

Numerical Study on the Orthogonality of the Fields Radiated by an Aperture

open access: yesMathematics, 2023
This work studies the orthogonality of the fields radiated by the different modes of a radiating aperture. Waveguide modes exhibit an orthogonality property at the aperture cross-section that can be used to simplify calculations.
Lucas Polo-López   +4 more
doaj   +1 more source

Optimal Waveforms Design for Ultra-Wideband Impulse Radio Sensors

open access: yesSensors, 2010
Ultra-wideband impulse radio (UWB-IR) sensors should comply entirely with the regulatory spectral limits for elegant coexistence. Under this premise, it is desirable for UWB pulses to improve frequency utilization to guarantee the transmission ...
Chong Zhao   +4 more
doaj   +1 more source

Orthogonal Basic Hypergeometric Laurent Polynomials

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2012
The Askey-Wilson polynomials are orthogonal polynomials in$x = cos heta$, which are given as a terminating $_4phi_3$ basic hypergeometric series. The non-symmetric Askey-Wilson polynomials are Laurent polynomials in $z=e^{iheta}$, which are given as a ...
Mourad E.H. Ismail, Dennis Stanton
doaj   +1 more source

The Role of Orthogonality in Genetic Code Expansion

open access: yesLife, 2019
The genetic code defines how information in the genome is translated into protein. Aside from a handful of isolated exceptions, this code is universal. Researchers have developed techniques to artificially expand the genetic code, repurposing codons and ...
Pol Arranz-Gibert   +2 more
doaj   +1 more source

Long-term interest rate predictability: Exploring the usefulness of survey forecasts of growth and inflation

open access: yesCogent Economics & Finance, 2019
This study focuses on the consensus forecasts from the Survey of Professional Forecasters (SPF) for 1993–2017. These include the SPF forecasts of US 10-year Treasury rate (TBR), Moody’s Aaa corporate bond rate (Aaa), CPI inflation, and real GDP growth ...
Hamid Baghestani
doaj   +1 more source

Conjugate gradient algorithm for consistent generalized Sylvester-transpose matrix equations

open access: yesAIMS Mathematics, 2022
We develop an effective algorithm to find a well-approximate solution of a generalized Sylvester-transpose matrix equation where all coefficient matrices and an unknown matrix are rectangular.
Kanjanaporn Tansri   +2 more
doaj   +1 more source

3D positioning scheme exploiting nano-scale IR-UWB orthogonal pulses

open access: yesNanoscale Research Letters, 2011
In these days, the development of positioning technology for realizing ubiquitous environments has become one of the most important issues. The Global Positioning System (GPS) is a well-known positioning scheme, but it is not suitable for positioning in ...
Kim Nammoon, Kim Youngok
doaj  

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