Results 51 to 60 of about 218,129 (345)

Engineering bedrock depth estimation and ground response analysis of the northern Jeddah urban area, western Saudi Arabia

open access: yesJournal of King Saud University: Science, 2020
The engineering bedrock depth was determined in the northern Jeddah urban area via multichannel analysis of surface waves (MASW) conducted at 76 locations.
Saad Mogren
doaj  

First order Fermi acceleration driven by magnetic reconnection

open access: yes, 2012
A box model is used to study first order Fermi acceleration driven by magnetic reconnection. It is shown, at least in this simple model, that the spectral index of the accelerated particles is related to the total compression in the same way as in ...
Axford   +9 more
core   +1 more source

The Low-High-Low Trend of Type III Radio Burst Starting Frequencies and Solar Flare Hard X-rays [PDF]

open access: yes, 2014
Using simultaneous X-ray and radio observations from solar flares, we investigate the link between the type III radio burst starting frequency and hard X-ray spectral index.
Kontar, Eduard P.   +2 more
core   +3 more sources

Combined spatially resolved metabolomics and spatial transcriptomics reveal the mechanism of RACK1‐mediated fatty acid synthesis

open access: yesMolecular Oncology, EarlyView.
The authors analyzed the spatial distributions of gene and metabolite profiles in cervical cancer through spatial transcriptomic and spatially resolved metabolomic techniques. Pivotal genes and metabolites within these cases were then identified and validated.
Lixiu Xu   +3 more
wiley   +1 more source

Seismic Microzonation of Tehran based on deterministic seismic hazard analysis and seismic indexes around faults [PDF]

open access: yesJournal of Structural and Construction Engineering, 2017
Tehran has situated over several active faults such as Mosha, North Tehran, North Ray and South Ray faults and has experienced strong earthquakes in its history.
Hamid Saffari   +1 more
doaj   +1 more source

Twinkling pulsar wind nebulae in the synchrotron cut-off regime and the gamma-ray flares in the Crab Nebula

open access: yes, 2011
Synchrotron radiation of ultra-relativistic particles accelerated in a pulsar wind nebula may dominate its spectrum up to gamma-ray energies. Because of the short cooling time of the gamma-ray emitting electrons, the gamma-ray emission zone is in the ...
A. M. Bykov   +47 more
core   +1 more source

Crosstalk between gut microbiota and tumor: tumors could cause gut dysbiosis and metabolic imbalance

open access: yesMolecular Oncology, EarlyView.
In this research, we analyzed the relationship between gut microbiota and tumor. We discovered that both subcutaneous and metastatic tumors would alter the composition and metabolic function of gut microbiota. Meanwhile, fecal microbiota transplantation also indicated the anti‐tumor role of the gut microbiota, revealing the crosstalk between tumor and ...
Siyuan Zhang   +8 more
wiley   +1 more source

Size dependence of solar X-ray flare properties [PDF]

open access: yes, 2005
Non-thermal and thermal parameters of 85 solar flares of GOES class B1 to M6 (background subtracted classes A1 to M6) have been compared to each other.
A. O. Benz   +25 more
core   +3 more sources

Targeted metabolomics reveals novel diagnostic biomarkers for colorectal cancer

open access: yesMolecular Oncology, EarlyView.
This study employed targeted metabolomic profiling to identify 302 distinct metabolites present in platelet‐rich plasma (PRP), revealing aberrant metabolic profiles amongst individuals diagnosed with colorectal cancer (CRC). Compared to carcinoembryonic antigen (CEA) and cancer antigen 19‐9 (CA199), our metabolite panel showed improved sensitivity ...
Zuojian Hu   +7 more
wiley   +1 more source

Exploring the Origin of Solar Energetic Electrons. II. Investigating Turbulent Coronal Acceleration

open access: yesThe Astrophysical Journal
Nonthermal particle acceleration in the solar corona is evident from both remote hard X-ray sources in the chromosphere and direct in situ detection in the heliosphere.
Ross Pallister   +2 more
doaj   +1 more source

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