نتایج جستجو برای: sks splitting

تعداد نتایج: 36297  

2017
Yongfei Cai Mingyang Su Ashfaq Ahmad Xiaojie Hu Jiayan Sang Lingyuan Kong Xingqiang Chen Chen Wang Jianwei Shuai Aidong Han

Two-component systems (TCSs) are key elements in bacterial signal transduction in response to environmental stresses. TCSs generally consist of sensor histidine kinases (SKs) and their cognate response regulators (RRs). Many SKs exhibit autokinase, phosphoryltransferase and phosphatase activities, which regulate RR activity through a phosphorylation and dephosphorylation cycle. However, how SKs...

Journal: :Geochemistry Geophysics Geosystems 2021

Little has been seismically imaged through the lithosphere and mantle at rifted margins across continent-ocean transition. A 2014–2015 community seismic experiment deployed broadband instruments shoreline of eastern North American margin. Previous shear-wave splitting along margin shows several perplexing patterns anisotropy, by proxy, flow. Neither parallel offshore fast azimuths nor null on c...

Journal: :Academic radiology 2005
Yani Zhang Binh T Pham Miguel P Eckstein

RATIONALE AND OBJECTIVE The set partitioning in hierarchical trees (SPIHT) wavelet image compression algorithm with the human visual system (HVS) quantization matrix was investigated using x-ray coronary angiograms. We tested whether the HVS quantization matrix for the SPIHT wavelet compression improved computer model/human observer performance in a detection task with variable signals compared...

Journal: :Geochemistry Geophysics Geosystems 2023

Abstract Rapid plate motion, alongside pronounced variations in age and thickness of the Australian continental lithosphere, makes it an excellent location to assess relationship between seismic anisotropy lithosphere‐asthenosphere dynamics. In this study, SKS PKS shear‐wave splitting is conducted for 176 stations covering transition from South Craton eastern Phanerozoic Australia. Comparisons ...

2004
Michael S. Thorne Edward J. Garnero

[1] Anomalous boundary layer structure at the core-mantle boundary (CMB) is investigated using a global set of broadband SKS and SPdKS waves from permanent and portable broadband seismometer arrays. SPdKS is an SKS wave that intersects the CMB at the critical angle for ScP, thus initiating a diffracted P wave (Pdiff) along the CMB at the core entry and exit locations. The waveshape and timing o...

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