Tau

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Tau P A Plane Wave Approach To The Analysis Of Seismic Data

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Author : Paul Stoffa
language : en
Publisher: Springer Science & Business Media
Release Date : 1989-08-31

Tau P A Plane Wave Approach To The Analysis Of Seismic Data written by Paul Stoffa and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989-08-31 with Science categories.

In exploration seismology, data are acquired at multiple source and receiver posi tions along a profile line. These data are subsequently processed and interpreted. The primary result of this process is a subsurface image of the exploration target. As part of this procedure, additional information is also obtained about the subsurface material properties, e.g., seismic velocities. The methods that are employed in the acquisition and processing of exploration seismic data are internally consistent. That is, principally near vertical incidence seismic waves are generated, recorded and subsequently imaged. The data processing methods commonly used are based upon a small angle of incidence approximation, thus making the imaging problem tractable for existing data processing technology. Although tremendously successful, the limitations of this method are generally recognized. Current and future exploration goals will likely require the use of additional seismic waves, i.e., both compressional and shear precritical and postcritical reflections and refractions. Also, in addition to making better use of seismic travel times, recent efforts to directly incorporate seismic amplitude variations show that the approach may lead to a better understanding of subsurface rock properties. In response to more demanding exploration goals, recent data acquisition techniques have improved significantly by increasing the spatial aperture and incorporating a large number of closely spaced receivers. The need for better subsurface resolution in depth and position has encouraged the use of 240, 512, and even 1024 recorded data channels with receiver separations of 5 to 25 m.

Tau Protein Mechanisms From Health To Degeneration

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Author : Isabel Lastres-Becker
language : en
Publisher: Frontiers Media SA
Release Date : 2022-01-03

Tau Protein Mechanisms From Health To Degeneration written by Isabel Lastres-Becker and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-01-03 with Science categories.

Tau Oligomers

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Author : Jesus Avila
language : en
Publisher: Frontiers E-books
Release Date : 2014-08-18

Tau Oligomers written by Jesus Avila and has been published by Frontiers E-books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-08-18 with Medicine (General) categories.

Neurofibrillary tangles (NFTs) composed of intracellular aggregates of tau protein are a key neuropathological feature of Alzheimer’s Disease (AD) and other neurodegenerative diseases, collectively termed tauopathies. The abundance of NFTs has been reported to correlate positively with the severity of cognitive impairment in AD. However, accumulating evidences derived from studies of experimental models have identified that NFTs themselves may not be neurotoxic. Now, many of tau researchers are seeking a “toxic” form of tau protein. Moreover, it was suggested that a “toxic” tau was capable to seed aggregation of native tau protein and to propagate in a prion-like manner. However, the exact neurotoxic tau species remain unclear. Because mature tangles seem to be non-toxic component, “tau oligomers” as the candidate of “toxic” tau have been investigated for more than one decade. In this topic, we will discuss our consensus of “tau oligomers” because the term of “tau oligomers” [e.g. dimer (disulfide bond-dependent or independent), multimer (more than dimer), granular (definition by EM or AFM) and maybe small filamentous aggregates] has been used by each researchers definition. From a biochemical point of view, tau protein has several unique characteristics such as natively unfolded conformation, thermo-stability, acid-stability, and capability of post-translational modifications. Although tau protein research has been continued for a long time, we are still missing the mechanisms of NFT formation. It is unclear how the conversion is occurred from natively unfolded protein to abnormally mis-folded protein. It remains unknown how tau protein can be formed filaments [e.g. paired helical filament (PHF), straight filament and twisted filament] in cells albeit in vitro studies confirmed tau self-assembly by several inducing factors. Researchers are still debating whether tau oligomerization is primary event rather than tau phosphorylation in the tau pathogenesis. Inhibition of either tau phosphorylation or aggregation has been investigated for the prevention of tauopathies, however, it will make an irrelevant result if we don’t know an exact target of neurotoxicity. It is a time to have a consensus of definition, terminology and methodology for the identification of “tau oligomers”.

The Lateral Line System Of Batrachus Tau

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Author : Cornelia Maria Clapp
language : en
Publisher:
Release Date : 1899

The Lateral Line System Of Batrachus Tau written by Cornelia Maria Clapp and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1899 with Nervous system categories.

The First Song Book Of Delta Tau Delta

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Author : Delta Tau Delta Fraternity
language : en
Publisher:
Release Date : 1887

The First Song Book Of Delta Tau Delta written by Delta Tau Delta Fraternity and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1887 with categories.

The Bent Of Tau Beta Pi

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Author :
language : en
Publisher:
Release Date : 1912

The Bent Of Tau Beta Pi written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1912 with categories.

The Rainbow Of Delta Tau Delta

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Author :
language : en
Publisher:
Release Date : 1940

The Rainbow Of Delta Tau Delta written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1940 with Greek letter societies categories.

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Author : Carstairs Douglas
language : en
Publisher:
Release Date : 1873

written by Carstairs Douglas and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1873 with Chinese language categories.

Tau Lepton Physics

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Author : Michel Davier
language : en
Publisher: Atlantica Séguier Frontières
Release Date : 1991

Tau Lepton Physics written by Michel Davier and has been published by Atlantica Séguier Frontières this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Leptons (Nuclear physics) categories.

Catalogue Of The Alpha Tau Omega Fraternity

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Author : Alpha Tau Omega
language : en
Publisher:
Release Date : 1897

Catalogue Of The Alpha Tau Omega Fraternity written by Alpha Tau Omega and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1897 with Greek letter societies categories.