Results 51 to 60 of about 1,252,380 (279)

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Digital mono-pulse method in cylindrical antenna

open access: yesArchives of Acoustics, 2014
The article presents a method designed to improve the accuracy of cylindrical antenna multi-beam sonar performance. The method is based on the mono-pulse method used in radars and sonars.
W. Leśniak   +4 more
doaj  

Minimum variance projection for direct measurements of power-law spectra in the wavenumber domain [PDF]

open access: yesAnnales Geophysicae, 2017
Minimum variance projection is widely used in geophysical and space plasma measurements to identify the wave propagation direction and the wavenumber of the wave fields.
Y. Narita   +5 more
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Passive sonar with cylindrical array

open access: yesArchives of Acoustics, 2014
The article presents a method of using active sonar with cylindrical array for passive monitoring of underwater sound sources. It is demonstrated that detecting a sound source and determining its bearings may be carried out with no changes in the ...
J. Marszal   +4 more
doaj  

A note on two expressions for the spatial power spectrum of the geomagnetic field

open access: yesAnnals of Geophysics, 1996
The spatial power spectrum of the geomagnetic field is usually assumed to be exponential in the spherical harmonic degree (n). An equally valid assumption, however, is that the spectrum at the surface of the Earth's core has a power-law dependence on n ...
D. R. Barraclough, A. De Santis
doaj   +1 more source

A spatial diversity cooperative spectrum sensing system based on blockchain and deep learning

open access: yesDianxin kexue, 2023
Cooperative spectrum sensing is a key technology in cognitive radio.A data-driven intelligent cooperative spectrum sensing system was proposed with spatial diversity running on a smart contract to address issues of security, privacy, incentive and hidden
Zhongshan XIAO, Chunqi WANG, Daquan FENG
doaj   +2 more sources

Energy-Efficient Cooperative Spectrum Sensing Scheme Based on Spatial Correlation for Cognitive Internet of Things

open access: yesIEEE Access, 2020
Due to the negative impact from spatial correlation, spatially correlated cognitive radio (CR) based devices participating in cooperative spectrum sensing may be harmful to the detection performance.
Runze Wan   +3 more
doaj   +1 more source

Customization of the angular spectrum method for calculating the acoustic piston field transmitted through a solid plate using MATLAB

open access: yesMethodsX, 2023
The angular spectrum (AS) model is customized to calculate the spatial acoustic pressure field generated by a piston source and transmitted through a steel plate immersed in water, for normal beam incidence.
M.M. Sæther
doaj   +1 more source

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

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