Results 221 to 230 of about 5,952 (245)

BASIC PRINCIPLES OF GROUND-CUSHION DEVICES

SAE Technical Paper Series, 1960
<div class="htmlview paragraph">A careful analysis is made of the basic principles which govern the operation of those ground-cushion devices currently known as ground-effect machines (GEM’s).</div> <div class="htmlview paragraph">Most GEM’s can be defined as machines which operate in close proximity to the earth’s surface without ...
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Grounding electrodes and grounding devices. Regulatory requirements

Автоматика, связь, информатика
Одной из основных проблем при проектировании заземляющих устройств (ЗУ) в грунтах с высоким удельным сопротивлением является создание низкоомного заземляющего устройства. В последнее время широкое распространение получили так называемые активные (химические) заземляющие электроды, обеспечивающие искусственное снижение удельного сопротивления грунта в ...
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Ground Penetrating Radar as a Sentinel Device

Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010, 2010
Geophysical methods provide a non-destructive non-intrusive method of subsurface investigation. Oftentimes, however, the target is difficult to “see” due to lack of contrast between the target and background. This lack of contrast can be rectified through the use of a sentinel device.
Peter J. Hutchinson, Bryan J. Teschke
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Ensuring Measurement Accuracy of Grounding Devices

2018 XIV International Scientific-Technical Conference on Actual Problems of Electronics Instrument Engineering (APEIE), 2018
The accuracy of measuring parameters of a grounding device depends, first of all, on the degree of protection of a grounding meter from the effects created by an electrical installation and a measuring circuit. The report considers such factors as asymmetry current of an electric network, direct currents in the earth, magnetic influence of a current ...
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Photoswitchable biomaterials as grounds for optobioelectronic devices

Bioelectrochemistry and Bioenergetics, 1997
Abstract Optobioelectronic systems provide a means for the electronic transduction of recorded optical signals. The methodologies to assemble optobioelectronic devices are reviewed. One method involves the chemical modification of redox enzymes with photoisomerizable units and their integration with electrode surfaces.
Itamar Willner, Bilha Willner
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INTERFACE PROTECTIVE DEVICES - GROUND EQUIPMENT TO AIRCRAFT

2017
<div class="section abstract"> <div class="htmlview paragraph">The protective device hereinafter called a "fender," is intended to serve its purpose during normal aircraft servicing and prevent damage during docking contact rather than agressive impact.</div></div>
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Grounding device of structural analysis and discussion

2011 Second International Conference on Mechanic Automation and Control Engineering, 2011
This paper analyzes the structure of grounding device, comprising grounding the concept of the general requirements for grounding, common ground and independent ground, ground and a little more grounded, grounding and bonding ring. Including a detailed analysis of the specific composition of various characteristics of grounding devices and applicable ...
null Junxia Lv, null Xinchun Zhang
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Devices for a Rotational Ground Motion Measurement

2018
Generally, a rotational ground motion can be induced by earthquakes, explosions, and ambient vibrations. From the above point of view, it is interesting for a study concerning the area of rotational seismology (Lee et al. 2009a).
Leszek R. Jaroszewicz, Anna Kurzych
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Screw Type Grounding Connection Device

Foreign Language Science and Technology Journal Database Engineering Technology, 2022
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Trends and Practices in Grounding and Ground Fault Protection Using Static Devices

IEEE Transactions on Industry Applications, 1973
Grounded and ungrounded systems are in general use in both commercial and industrial distribution systems. Proponents of each type of system have established valid points to defend their position. This paper briefly identifies the types of systems in use in each category and lists some of the main advantages and disadvantages of each.
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