Results 11 to 20 of about 21,912,576 (328)

Feasibility of controlling COVID-19 outbreaks by isolation of cases and contacts

open access: yesLancet Global Health, 2020
Background Isolation of cases and contact tracing is used to control outbreaks of infectious diseases, and has been used for coronavirus disease 2019 (COVID-19).
J. Hellewell   +22 more
semanticscholar   +1 more source

COVID-19: towards controlling of a pandemic

open access: yesThe Lancet, 2020
www.thelancet.com Vol 395 March 28 ...
J. Bedford   +12 more
semanticscholar   +1 more source

Magnetic Flux Density Feature Analysis and CT Saturation Region Recognition and Reconstruction Technology

open access: yesZhongguo dianli, 2023
To solve the problem of relay protection caused by CT saturation, a CT saturation identification method is proposed based on flux density characteristics and secondary current reconstruction technology in the distortion area.
Feng WANG   +5 more
doaj   +1 more source

Microplastics in environment: global concern, challenges, and controlling measures

open access: yesInternational Journal of Environmental Science and Technology, 2022
Plastic pollution in various forms has emerged as the most severe environmental threat. Small plastic chunks, such as microplastics and nanoplastics derived from primary and secondary sources, are a major concern worldwide due to their adverse effects on
G. Lamichhane   +8 more
semanticscholar   +1 more source

An internal swelling factor model to examine the influence of permeability anisotropy on coalbed methane extraction

open access: yesEnergy Science & Engineering, 2020
Owing to the characteristics of coal reservoirs, the gas flow capacity and permeability exhibit strong anisotropy. The anisotropy in terms of the magnitude, which corresponds to the permeability in the horizontal direction being several orders of ...
Zhigang Zhang   +5 more
doaj   +1 more source

Experimental Accuracy and Stability of Gas Outburst Experimental System

open access: yesGeofluids, 2021
Gas outburst is an important issue in deep coal mining. At present, the gas-rock coupling change mechanism and intensity prediction of gas outburst are not clear. The research of gas outburst simulation experiment is particularly important. The State Key
Yanbao Liu   +4 more
doaj   +1 more source

Conspiracy theories as barriers to controlling the spread of COVID-19 in the U.S.

open access: yesSocial Science & Medicine (1967), 2020
Rationale The COVID-19 pandemic poses extraordinary challenges to public health. Objective Because the novel coronavirus is highly contagious, the widespread use of preventive measures such as masking, physical distancing, and eventually vaccination is ...
D. Romer, K. Jamieson
semanticscholar   +1 more source

Well-Posed Initial-Boundary Value Problem for a Constrained Evolution System and Radiation-Controlling Constraint-Preserving Boundary Conditions [PDF]

open access: yes, 2006
A well-posed initial-boundary value problem is formulated for the model problem of the vector wave equation subject to the divergence-free constraint.
Alexander M. Alekseenko   +1 more
core   +4 more sources

Controlling Chimeras [PDF]

open access: yes, 2015
Coupled phase oscillators model a variety of dynamical phenomena in nature and technological applications. Non-local coupling gives rise to chimera states which are characterized by a distinct part of phase-synchronized oscillators while the remaining ...
Bick, Christian, Martens, Erik A.
core   +2 more sources

Experiment Study of Outburst Pulverized Coal-Gas Two-Phase Flow and Characteristic Analysis of Outburst Wave

open access: yesGeofluids, 2021
Coal and gas outburst is still a major safety problem in the process of coal production in China. Correctly understanding of the migration law of outburst high gas and pulverized coal is an important basis for accurately predicting the occurrence time ...
Xusheng Zhao   +3 more
doaj   +1 more source

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