Highly accurate excitation spectra are predicted for the low-lying n-π* and π-π* states of uracil for both the gas phase and in water employing the complete active space self-consistent field (CASSCF) and multiconfigurational quasidegenerate perturbation theory (MCQDPT) methods. Implementation of the effective fragment potential (EFP) solvent method with CASSCF and MCQDPT enables the prediction...

Audio-rate modulation of the parameters of physical models is investigated. For example, the resonance frequency of a simple resonator can be modulated smoothly at an audio rate to produce a brighter tone. As with traditional frequency modulation (FM) signal models, complex spectra can be produced through variation of the resonator’s frequency. It is possible to create such hybrid physical/sign...

Kinetic energy (KE) spectra derived from global high-resolution atmospheric simulations from the Model for PredictionAcross Scales (MPAS) are presented. The simulations are produced using quasi-uniform global Voronoi horizontal meshes with 3-, 7.5-, and 15-km mean cell spacings. KE spectra from the MPAS simulations compare well with observations and other simulations in the literature and posse...

Non-uniform sampling offers a dramatic increase in the power and efficiency of magnetic resonance techniques in chemistry, molecular structural biology, and other fields. Here we show that use of the causality property of an NMR signal is a general approach for major reduction of measuring time and quality improvement of the sparsely detected spectra.

We present high-speed hyperspectral Raman imaging with integrated active-illumination for label-free compositional microanalysis. We show that high-quality Raman spectra can be acquired from as many as ~1,000 spots/sec semi-randomly distributed among a ~100x100 μm(2) area without mechanical scanning. We demonstrate rapid data acquisition from three types of samples: 1) uniform, strong Raman sca...

Quantitative ultrasound (QUS) techniques that parameterize the backscattered signal power spectrum have demonstrated significant promise for ultrasonic tissue characterization. Some QUS parameters, including the effective scatterer diameter (ESD) and the effective acoustic concentration (EAC) that can be used for disease detection and diagnosis, require the assumption that the examined medium c...

AbstractThe engineering purpose of a site-specific response analysis is to estimate the uniform hazard acceleration spectrum on ground surface for selected level. One mandatory components site analyses one or more representative time histories that need be scaled with respect calculated seismic level site. The selection and scaling procedures earthquake records play an important role in this ap...

Canada’s 2020 national seismic hazard model (CSHM 2020) provides estimates for interface Cascadia Subduction Zone (CSZ) earthquakes in southwestern Canada using four ground motion models (GMMs) with equal weights. Two out of the GMMs were derived data primarily from subduction Japan so their use CSHM includes a “Japan-to-Cascadia” factor to account local site conditions. Despite this regional f...

© 2012 Tkachev and Timofeev, licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Uniform EPR Spectra Analysis of Spin-Labeled Macromolecules by Temperature and...

The Airborne Prism Experiment (APEX) is currently being built as a demonstrator and calibrator for potential future European spaceborne imaging spectrometers (Itten et al., 1997, Schaepman et al., 2003). It allows the retrieval of traditional and new products for vegetation, geological, limnological and atmospheric sciences. The uniformity of pushbroom imaging spectrometers is affected by spect...