Results 281 to 290 of about 5,648,704 (342)
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Scatter reduction in mammography with air gap
Medical Physics, 1996Scatter reduction by air gaps in mammography was investigated. We have experimentally demonstrated that, independently of the imaging geometry, scatter in air‐gap mammography can be well described by a virtual source of scatter (VSS) model. This model postulates that scatter radiation originates from a virtual point source of scatter placed on the ...
A, Krol +3 more
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Science of the Total Environment, 2020
Microplastics are an emerging global environmental contaminant that are affecting multiple spheres. Despite their ubiquity in all spheres of life and ecology, little is known about the health effects of microplastics exposure to humans.
Arifur Rahman +4 more
semanticscholar +1 more source
Microplastics are an emerging global environmental contaminant that are affecting multiple spheres. Despite their ubiquity in all spheres of life and ecology, little is known about the health effects of microplastics exposure to humans.
Arifur Rahman +4 more
semanticscholar +1 more source
ESD Susceptibility of Submicron Air Gaps
Microelectronics Reliability, 2006This work describes the investigation of the ESD susceptibility of submicron air gaps which are used e.g. in filter devices. The breakdown behaviour of the air gaps is analyzed in both the HBM (Human Body Model) time domain and the CDM (Charged Device Model) time domain.
Heinrich Wolf +3 more
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A Farewell to Air Gaps, Part 1
Computer, 2015One of the most fundamentally misguided ways to protect a networked infrastructure is to introduce an air gap. The US has been mastering the art of crossing them for more than 30 years.
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Compact Microstrip Antenna with an Air Gap
2018 IEEE East-West Design & Test Symposium (EWDTS), 2018A microstrip antenna with an air gap was designed. The possibilities of reducing the size of a printed radiator by means of the bending of the antenna and gap heterogeneities are investigated. The frequency and angular dependences of the ellipticity coefficient of a single radiator are calculated.
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A Farewell to Air Gaps, Part 2
Computer, 2015Air gaps have never been an effective deterrent to a determined state-sponsored aggressor. This is just one of the lessons we learned from Stuxnet and the Farewell incident, and I will describe a few others. This is the second part of a two-part series. Part 1 is in the June 2015 issue at 10.1109/MC.2015.179.
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Effects of Dynamic Air Gap on Air Gap Breakdown Discharge in Sand/Dust Environment
IEEJ Transactions on Electrical and Electronic Engineering, 2010AbstractEffects of vibration frequency and amplitude on air gap discharge characteristics were studied by simulation experiments through a special model. The results show that in clean air environment the air gap discharge characteristics are mainly affected by the minimum air gap distance, while in the sand/dust–air environment the air gap discharge ...
Bo He +3 more
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2019
A security measure which involves isolation of a computer or a network in order to prevent it from establishing an external connection, such a security measure is called air gapping. If we are able to physically segregate a computer in such a way that it becomes incapable of connecting wirelessly or physically with other computers network or devices ...
Susmit Sarkar +4 more
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A security measure which involves isolation of a computer or a network in order to prevent it from establishing an external connection, such a security measure is called air gapping. If we are able to physically segregate a computer in such a way that it becomes incapable of connecting wirelessly or physically with other computers network or devices ...
Susmit Sarkar +4 more
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The air-gap transformer and choke
Journal of the Institution of Electrical Engineers, 1933Much has been written on the design of transformers to carry direct current in the primary winding in addition to alternating current, and the value of an air-gap in the magnetic circuit has also received considerable attention. In the present paper the subject is taken up anew, and a method is demonstrated by which graphs relating to different values ...
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