Results 11 to 20 of about 3,485,775 (374)

Destroying Kerr-Sen black holes [PDF]

open access: yes, 2016
By neglecting the self-force, self-energy, and radiative effects, it has been shown that an extremal or near-extremal Kerr-Newman black hole can turn into a naked singularity when it captures charged and spinning massive particles.
Siahaan, Haryanto M.
core   +2 more sources

Analysis of temperature variability utilising Mann–Kendall and Sen's slope estimator tests in the Accra and Kumasi Metropolises in Ghana

open access: yesEnvironmental Systems Research, 2022
Temperature variability may have direct and indirect impacts on the environments of the Accra and Kumasi Metropolises in Ghana. This study analysed temperature and trends in temperature in both cities using in-situ measurements from one meteorological ...
Bernard Fosu Frimpong   +2 more
semanticscholar   +1 more source

Parameters estimation and strong gravitational lensing of nonsingular Kerr-Sen black holes [PDF]

open access: yes, 2020
The recent time witnessed a surge of interest in strong gravitational lensing by black holes is due to the Event Horizon Telescope (EHT) results, which suggest comparing the black hole lensing in both general relativity and heterotic string theory.
Sushant G. Ghosh   +2 more
semanticscholar   +1 more source

Mathematical Modeling of the Early Stage of Clogging of the SEN During Continuous Casting of Ti-ULC Steel

open access: yesMetallurgical and Materials Transactions B, 2021
The clogging of the submerged entry nozzle (SEN) during the continuous casting of steel can be divided into two stages: the “early stage,” when the initial layer of the clog covers the SEN refractory surface owing to chemical reactions, and the “late ...
H. Barati   +6 more
semanticscholar   +1 more source

Are ultraspinning Kerr-Sen- AdS4 black holes always superentropic? [PDF]

open access: yes, 2020
We study thermodynamics of the four-dimensional Kerr-Sen-AdS black hole and its ultra-spinning counterpart, and verify that both black holes fullfil the first law and Bekenstein-Smarr mass formulae of black hole thermodynamics. Furthermore, we derive new
Di Wu, Puxun Wu, Hongwei Yu, Shuang Wu
semanticscholar   +1 more source

Combination of modified Mann‐Kendall method and Şen innovative trend analysis

open access: yesEngineering Reports, 2020
Mann‐Kendall (MK) trend test is frequently employed as the most familiar trend detection method. Its application requires serial independence of available hydrometeorological time series records.
Sadık Alashan
semanticscholar   +1 more source

Weak cosmic censorship in Kerr-Sen black hole under charged scalar field [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2019
We investigate the weak cosmic censorship conjecture for Kerr-Sen black holes, which are solutions to the four-dimensional low-energy effective field theory for the heterotic string theory, based on the scattering of a charged scalar field.
Bogeun Gwak
semanticscholar   +1 more source

Schwarz-Sen duality made fully local [PDF]

open access: yes, 2000
Duality symmetric electromagnetic action a la Schwarz-Sen is shown to appear naturally in a chain of equivalent actions which interchange equations of motion with Bianchi identities.
Deser, Deser, R.L. Pakman, Schwarz
core   +2 more sources

Eye Care for Children in Special Schools: An Audit of Provision

open access: yesBritish and Irish Orthoptic Journal, 2021
Introduction: Children and young people with Special Educational Needs (SEN) are 28 times more likely to have eye problems than their typically developing peers. An ideal approach to the eye care for children attending special schools in England has been 
Louise C. Allen   +2 more
doaj   +1 more source

Long-Term Trends and Seasonality Detection of the Observed Flow in Yangtze River Using Mann-Kendall and Sen’s Innovative Trend Method

open access: yesWater, 2019
Trend analysis of streamflow provides practical information for better management of water resources on the eve of climate change. Thus, the objective of this study is to evaluate the presence of possible trends in the annual, seasonal, maximum, and ...
Rawshan Ali   +3 more
semanticscholar   +1 more source

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