Articles with "inversion" as a keyword



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Ionospheric electron density inversion for Global Navigation Satellite Systems radio occultation using aided Abel inversions

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Published in 2017 at "Journal of Geophysical Research"

DOI: 10.1002/2016ja023027

Abstract: The Abel inversion of ionospheric electron density profiles with the assumption of spherical symmetry applied for radio occultation soundings could introduce a greater systematic error or sometimes artifacts if the occultation rays trespass regions with… read more here.

Keywords: electron density; inversion; aided abel; density ... See more keywords
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Ambient Seismic Source Inversion in a Heterogeneous Earth: Theory and Application to the Earth's Hum

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Published in 2017 at "Journal of Geophysical Research"

DOI: 10.1002/2017jb014738

Abstract: The sources of ambient seismic noise are extensively studied both to better understand their influence on ambient noise tomography and related techniques, and to infer constraints on their excitation mechanisms. Here we develop a gradient-based… read more here.

Keywords: inversion; source; ambient seismic; earth hum ... See more keywords
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A comparison of the association between large haplotype blocks under selection and the presence/absence of inversions

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Published in 2019 at "Ecology and Evolution"

DOI: 10.1002/ece3.5094

Abstract: Abstract Inversions may contribute to ecological adaptation and phenotypic diversity, and with the advent of “second” and “third” generation sequencing technologies, the ability to detect inversion polymorphisms has been enhanced dramatically. A key molecular consequence… read more here.

Keywords: large haplotype; inversion; presence; selection ... See more keywords
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Helix Induction and Inversion of Polymeric Foldamer Regulated by the Single Enantiomers.

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Published in 2022 at "Macromolecular rapid communications"

DOI: 10.1002/marc.202200238

Abstract: In general, a single enantiomer can induce a foldamer into a preferred-handed helix, while another condition is required for the helical inversion. In this work, it is found that the helix induction and subsequent inversion… read more here.

Keywords: helix induction; aza crown; inversion; single enantiomers ... See more keywords
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On the accuracy of permittivity profile inversion

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Published in 2021 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.32951

Abstract: An inversion accuracy improvement technique based on the two‐port network subject taken from the microwave theory is presented. The technique is dedicated to the one‐dimensional dielectric structure where the permittivity is a function of depth.… read more here.

Keywords: permittivity profile; accuracy permittivity; inversion accuracy; inversion ... See more keywords
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A new phase modulated binomial‐like selective‐inversion sequence for solvent signal suppression in NMR

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Published in 2017 at "Magnetic Resonance in Chemistry"

DOI: 10.1002/mrc.4505

Abstract: A new 8‐pulse Phase Modulated binomial‐like selective inversion pulse sequence, dubbed ‘8PM’, was developed by optimizing the nutation and phase angles of the constituent radio‐frequency pulses so that the inversion profile resembled a target profile.… read more here.

Keywords: suppression; inversion; phase modulated; modulated binomial ... See more keywords
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Automated selection of myocardial inversion time with a convolutional neural network: Spatial temporal ensemble myocardium inversion network (STEMI‐NET)

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Published in 2019 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.27680

Abstract: Delayed enhancement imaging is an essential component of cardiac MRI, which is used widely for the evaluation of myocardial scar and viability. The selection of an optimal inversion time (TI) or null point (TINP) to… read more here.

Keywords: network; inversion; inversion time; convolutional neural ... See more keywords
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Comparison of inversion methods in MR elastography: An open‐access pipeline for processing multifrequency shear‐wave data and demonstration in a phantom, human kidneys, and brain

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Published in 2022 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.29320

Abstract: Magnetic resonance elastography (MRE) maps the viscoelastic properties of soft tissues for diagnostic purposes. However, different MRE inversion methods yield different results, which hinder comparison of values, standardization, and establishment of quantitative MRE markers. Here,… read more here.

Keywords: open access; comparison inversion; inversion; inversion methods ... See more keywords
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Rapid 3D T1 mapping using deep learning‐assisted Look‐Locker inversion recovery MRI

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Published in 2023 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.29672

Abstract: Conventional 3D Look‐Locker inversion recovery (LLIR) T1 mapping requires multi‐repetition data acquisition to reconstruct images at different inversion times for T1 fitting. To ensure B1 robustness, sufficient time of delay (TD) is needed between repetitions,… read more here.

Keywords: inversion; inversion recovery; look locker; locker inversion ... See more keywords
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Interpretation attributes derived from airborne electromagnetic inversion models using the continuous wavelet transform

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Published in 2018 at "Near Surface Geophysics"

DOI: 10.1002/nsg.12018

Abstract: Planning, contracting, data acquisition and processing plus the inverter’s quality assessment and inversion of a regional airborne electromagnetic survey may take some months, while the interpretation of the results is a considerably more complex and… read more here.

Keywords: inversion; continuous wavelet; interpretation; airborne electromagnetic ... See more keywords
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Transdimensional and Hamiltonian Monte Carlo inversions of Rayleigh‐wave dispersion curves: a comparison on synthetic datasets

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Published in 2020 at "Near Surface Geophysics"

DOI: 10.1002/nsg.12100

Abstract: ABSTRACT We compare two Monte Carlo inversions that aim to solve some of the main problems of dispersion curve inversion: deriving reliable uncertainty appraisals, determining the optimal model parameterization and avoiding entrapment in local minima… read more here.

Keywords: model; monte carlo; inversion; hamiltonian monte ... See more keywords