Results 61 to 70 of about 770,616 (284)

Study on prediction of blasting cracking radius of liquid CO2 in coal.

PLoS ONE, 2023
In this study, we sought to improve the efficiency of coal seam gas extraction, master the characteristics of different factors on the liquid carbon dioxide (CO2) phase change blasting cracking radius, and effectively predict the hole spacing.
Jinzhang Jia, Yumo Wu, Dan Zhao, Bin Li, Dongming Wang   +4 more
doaj   +1 more source

Inequalities for the Norm and Numerical Radius of Composite Operators in Hilbert Spaces [PDF]

, 2005
Some new inequalities for the norm and the numerical radius of composite operators generated by a pair of operators are given.Comment: 12 ...
Dragomir, Sever Silvestru
core   +2 more sources

Numerical range for random matrices

, 2014
We analyze the numerical range of high-dimensional random matrices, obtaining limit results and corresponding quantitative estimates in the non-limit case. For a large class of random matrices their numerical range is shown to converge to a disc.
Collins, Benoît, Gawron, Piotr, Litvak, Alexander E., Życzkowski, Karol   +3 more
core   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Crater effects of shallow burial explosions in soil based on SPH-FEM analysis

Frontiers in Earth Science, 2023
This study analyzed the effects and influencing factors of shallowly-buried explosions in soil based on the design and implementation of static explosion experiments and numerical simulations. Based on the static explosion test data, a numerical analysis
Ying Cui, Ying Cui, Zhangjian Li, Jun Fang, Ben Zhao   +4 more
doaj   +1 more source

On the numerical radius of the truncated adjoint Shift [PDF]

, 2012
A celebrated thorem of Fejer (1915) asserts that for a given positive trigonometric polynomial $\sum_{j=-n+1}^{n-1}c_{j}e^{ijt}$, we have $\lvert c_{1}\lvert\leqslant c_{0}\cos\frac{\pi}{n+1}$. A more recent inequality due to U. Haagerup and P.
Gaaya, Haykel
core  

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Some new inequalities on the improvement of numerical radius bounds

Journal of Inequalities and Applications
This article presents an investigation to improve the numerical radius bounds for bounded linear operators on a complex Hilbert space through the application of Young’s inequality.
Elkhateeb S. Aly, Tabassum Bilal, Javariya Hyder, Ali M. Mahnashi, S. Bourazza, Muhammad Saeed Akram   +5 more
doaj   +1 more source

Numerical Radius Inequalities for Finite Sums of Operators

Demonstratio Mathematica, 2014
In this paper, we obtain some sharp inequalities for numerical radius of finite sums of operators. Moreover, we give some applications of our result in estimation of spectral radius. We also compare our results with some known results.
Mirmostafaee Alireza Kamel, Rahpeyma Omid Pourbahari, Omidvar Mohsen Erfanian   +2 more
doaj   +1 more source

Does the circularization radius exist or not for low angular momentum accretion?

, 2014
If the specific angular momentum of accretion gas at large radius is small compared to the local Keplerian value, one usually believes that there exists a "circularization radius" beyond which the angular momentum of accretion flow is almost a constant ...
Bu, De-Fu, Yuan, Feng
core   +1 more source