Relevant bibliographies by topics / Electromagnetic Airy pulse

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  2. Dissertations / Theses
  3. Books
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Academic literature on the topic 'Electromagnetic Airy pulse'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Electromagnetic Airy pulse"

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Kouklan, Mohammad Hossein, Yousef Hojjat, and Toshiro Higuchi. "Air Impact Drive for Positioning by Pulse and Continuous Air Pressure." Journal of Robotics and Mechatronics 11, no. 4 (August 20, 1999): 263–68. http://dx.doi.org/10.20965/jrm.1999.p0263.

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In recent years, the application of impacts to precise positioning has been increased. Previously, the impulsive force or impact was generated by electromagnetic impulsive force or by the sudden deformation of a piezoelement. In this paper, a new actuator named as Air Impact Drive (AID) is introduced, in which the impact is generated by impulsive air pulse pressure. Free body diagrams and equations of this new actuator were drawn and determined. Experimental and theoretical results are in good agreement. The new actuator could displace a 0.2kg object at 0.1 of millimeter per pulse by pulse air pressure. By implementing suitable setup of parameters, the AID could move the object by continuous, constant air pressure with good linearity. This property is unique among other impact drives for positioning. By 0.3Mpa of source air pressure, the new actuator could move the mentioned object at the speed of approximately 13.4mm/s.
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Zhang, Han-Tian, Qian-Hong Zhou, Hai-Jing Zhou, Qiang Sun, Meng-Meng Song, Ye Dong, Wei Yang, and Jian-Sheng Yao. "Hybrid modelling of cavity system generated electromagnetic pulse in low pressure air." Acta Physica Sinica 71, no. 5 (2022): 055201. http://dx.doi.org/10.7498/aps.71.20211524.

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The surface of metal system exposed to ionizing radiation (X-ray and γ-ray) will emit high-energy electrons through the photoelectric effect and other processes. The transient electromagnetic field generated by the high-speed electron flow is called system generated electromagnetic pulse (SGEMP), which is difficult to shield effectively. An ongoing effort has been made to investigate the SGEMP response in vacuum by numerical simulation. However, the systems are usually operated in a gaseous environment. The objective of this paper is to investigate the effect of low-pressure air on the SGEMP. A three-dimensional hybrid simulation model is developed to calculate the characteristics of the electron beam induced air plasma and its interaction with the electromagnetic field. In the hybrid model, the high-energy photoelectrons are modelled as macroparticles, and secondary electrons are treaed as fluid for a balance between efficiency and accuracy. A cylindrical cavity with an inner diameter of 100 mm and a length of 50 mm is used. The photoelectrons are emitted from one end of the cavity and are assumed to be monoenergetic (20 keV). The photoelectron pulse follows a sine-squared distribution with a peak current density of 10 A/cm<sup>2</sup>, and its full width at half maximum is 2 ns. The results show that the number density of the secondary electrons near the photoelectron emission surface and its axial gradient increase as air pressure increases. The electron number density in the middle of the cavity shows a peak value at 20 Torr (1 Torr = 133 Pa). The electron temperature decreases monotonically with the increase in pressure. The low-pressure air plasma in the cavity prevents the space charge layer from being generated. The peak value of the electric field is an order of magnitude lower than that in vacuum, and the pulse width is also significantly reduced. The emission characteristic of the photoelectrons determines the peak value of the current response. The current reaching the end of the cavity surface first increases and then decreases with pressure increasing. The plasma return current can suppress the rising rate of the total current and extend the duration of current responses. Finally, to validate the established hybrid simulation model, the calculated magnetic field is compared with that from the benchmark experiments. This paper helps to achieve a better prediction of the SGEMP response in a gaseous environment. Compared with the particle-in-cell Monte Carlo collision method, the hybrid model adopted can greatly reduce the computational cost.
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Mahmud, Md Iqbal, and Haeng Muk Cho. "Analysis of Crankcase Flow of an Automobile ECV for Air Conditioning Control System." Applied Mechanics and Materials 373-375 (August 2013): 421–26. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.421.

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Electromagnetic control valve (ECV) controls an automobile vehicle air conditioning compressor based on a pulse width modulation (PWM) input signal that supplied from an external controller. For maintaining a suitable range of temperatures inside the vehicle, suction and crankcase port pressure controls the swash (wobble) plate at certain angle. Suction and crankcase port pressure controlled in ECV can be analyzed by experimental test by considering different technical assumptions. This research paper highlights the flow of air from crankcase port with correspondence with amount of variable supply of current to obtain the experimental test data which is important to maintain the vehicle temperature inside the compartment for passengers comfort.
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Yu, Kexun, Hanting Zhu, Xianfei Xie, Huijie Duan, Jiamin Ding, Changping Sun, and Zhaoyang Bao. "Loss Analysis of Air-Core Pulsed Alternator Driving an Ideal Electromagnetic Railgun." IEEE Transactions on Transportation Electrification 7, no. 3 (September 2021): 1589–99. http://dx.doi.org/10.1109/tte.2021.3051630.

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Buskirk, Fred R., and John R. Neighbours. "Čerenkov radiation and electromagnetic pulse produced by electron beams traversing a finite path in air." Physical Review A 34, no. 4 (October 1, 1986): 3470–73. http://dx.doi.org/10.1103/physreva.34.3470.

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Filonenko, A. D. "On the nature of an anomalous RF electromagnetic pulse caused by an extensive air shower." Technical Physics Letters 27, no. 5 (May 2001): 398–400. http://dx.doi.org/10.1134/1.1376763.

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Yu, Kexun, Jiakang Yao, Xianfei Xie, Fengwei Zhang, and Peng Tang. "3-D FEM Analysis on Electromagnetic Characteristics of an Air-Core Pulsed Alternator." IEEE Transactions on Plasma Science 45, no. 7 (July 2017): 1257–62. http://dx.doi.org/10.1109/tps.2017.2705140.

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Xie, Xianfei, Kexun Yu, Caiyong Ye, Qilin You, Lei Tang, and Hua Zhang. "Design Considerations of an Air-Core Pulsed Alternator in an Electromagnetic Railgun System." IEEE Transactions on Plasma Science 43, no. 11 (November 2015): 3895–900. http://dx.doi.org/10.1109/tps.2015.2480789.

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Bleier, T., C. Dunson, M. Maniscalco, N. Bryant, R. Bambery, and F. Freund. "Investigation of ULF magnetic pulsations, air conductivity changes, and infra red signatures associated with the 30 October Alum Rock M5.4 earthquake." Natural Hazards and Earth System Sciences 9, no. 2 (April 16, 2009): 585–603. http://dx.doi.org/10.5194/nhess-9-585-2009.

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Abstract. Several electromagnetic signal types were observed prior to and immediately after 30 October 2007 (Local Time) M5.4 earthquake at Alum Rock, Ca with an epicenter ~15 km NE of San Jose Ca. The area where this event occurred had been monitored since November 2005 by a QuakeFinder magnetometer site, unit 609, 2 km from the epicenter. This instrument is one of 53 stations of the QuakeFinder (QF) California Magnetometer Network-CalMagNet. This station included an ultra low frequency (ULF) 3-axis induction magnetometer, a simple air conductivity sensor to measure relative airborne ion concentrations, and a geophone to identify the arrival of the P-wave from an earthquake. Similar in frequency content to the increased ULF activity reported two weeks prior to the Loma Prieta M7.0 quake in 1989 (Fraser-Smith, 1990, 1991), the QF station detected activity in the 0.01–12 Hz bands, but it consisted of an increasing number of short duration (1 to 30 s duration) pulsations. The pulsations peaked around 13 days prior to the event. The amplitudes of the pulses were strong, (3–20 nT), compared to the average ambient noise at the site, (10–250 pT), which included a component arising from the Bay Area Rapid Transit (BART) operations. The QF station also detected different pulse shapes, e.g. negative or positive only polarity, with some pulses including a combination of positive and negative. Typical pulse counts over the previous year ranged from 0–15 per day, while the count rose to 176 (east-west channel) on 17 October, 13 days prior to the quake. The air conductivity sensor saturated for over 14 h during the night and morning prior to the quake, which occurred at 20:29 LT. Anomalous IR signatures were also observed in the general area, within 50 km of the epicenter, during the 2 weeks prior to the quake. These three simultaneous EM phenomena were compared with data collected over a 1–2-year period at the site. The data was also compared against accounts of air ionization reported to be associated with radon emission from the ground (Ouzounov, 2007), and a series of laboratory rock stressing experiments (Freund, 2006, 2007a, b, c) to determine if field data was consistent either of these accounts. We could not find a data set with pre-earthquake radon measurements taken near the Alum Rock epicenter to compare against our field data. However, based on the Alum Rock data set example and another data set at Parkfield, the field tests are at least consistent with the lab experiments showing currents, magnetic field disturbances, air conductivity changes, and IR signatures. This is encouraging, but more instrumented earthquake examples are needed to prove a repeating pattern for these types of pre-earthquake EM signatures. For more information on QuakeFinder please view http://www.quakefinder.com.
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Xie, Xianfei, Kexun Yu, Fengwei Zhang, Peng Tang, and Jiakang Yao. "Simulation of a Seven-Phase Air-Core Pulsed Alternator Driving the Electromagnetic Rail Gun." IEEE Transactions on Plasma Science 45, no. 7 (July 2017): 1251–56. http://dx.doi.org/10.1109/tps.2017.2705137.

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Dissertations / Theses on the topic "Electromagnetic Airy pulse"

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Gnatenko, A. S., O. V. Zhyla, and A. G. Nerukh. "Airy Pulse Transformation by an Accelerated Medium Boundary." Thesis, CAOL, 2019. http://openarchive.nure.ua/handle/document/15101.

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In the statement of a problem with a moving boundary there is one more idealization, namely, movement stationarity assuming that the movement has begun at infinite past time. Abandoning this idealization, by considering a movement that begins at a finite moment of time, leads to the appearance of new peculiarities in the wave transformation on a moving boundary. In this paper such peculiarities are considered with an abrupt uniform movement of a boundary beginning at zero moment of time, as well as with a smooth "turning on" of a boundary movement according to a relativistic uniformly accelerated law. In the latter approach the continuity of a boundary velocity change allows the development of the evolution of the wave transformation process to be traced.
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Books on the topic "Electromagnetic Airy pulse"

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North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Flight in adverse environmental conditions. Neuilly sur Seine, France: AGARD, 1989.

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T. Wave Phenomena. Courier Dover Publications, 2014.

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Book chapters on the topic "Electromagnetic Airy pulse"

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Crull, E., H. Krompholz, A. Neuber, and L. Hatfield. "Fast Volume Breakdown in Argon and Air at Low Pressures." In Ultra-Wideband, Short-Pulse Electromagnetics 7, 440–47. New York, NY: Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-37731-5_48.

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Paran, K., and M. Kamyab. "Electromagnetic Radiation from Vertical Dipoles in Inhomogeneous Air-Lossy Medium Space." In Ultra-Wideband, Short-Pulse Electromagnetics 7, 115–22. New York, NY: Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-37731-5_14.

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Mayhall, D. J., and J. H. Yee. "Two-Dimensional Calculation of Electromagnetic Pulse Generation by Laser-Initiated Air Avalanche Switches." In Laser Interaction and Related Plasma Phenomena, 209–32. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3324-5_20.

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Sumner, David S., and Kirk w. Beach. "Eugene Strandness and the development of Doppler ultrasound in vascular disease." In Ultrasound in Clinical Diagnosis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199602070.003.0013.

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This is the story of how a young surgeon, Donald Eugene Strandness Jr (Gene) was instrumental in the development of the Doppler ultrasonic flow meter, which evolved into the duplex scanner — perhaps the most versatile instrument in the modern vascular lab. He was born in Bowman, North Dakota, in 1928, and attended high school in Olympia, washington, where he was a football player and a star gymnast. He graduated from Pacific Lutheran University in 1946, studied medicine at the University of washington (Uw), and in 1950 entered the general surgical residency programme. At the time of the Korean war, Gene was drafted out of his residency; met his 2-year service obligation to the United States Air Force; and in 1959 returned to Seattle, where he hoped to join in the extensive research underway on the gastrointestinal system under the direction of Professor Henry Harkins. Instead, Dr Harkins urged him to change directions and join a small group at the Seattle VA Hospital who were investigating arterial disease. This group included John Bell, Hub Radke, and J.E. Jesseph. Strandness, swallowing his initial disappointment at having to give up gastrointestinal research, quickly embraced the vascular challenge. The 1950s were a particularly exciting time in the history of vascular surgery. Improved sutures, grafts, and anaesthesia made it possible for the first time to perform major arterial surgery, such as resection of abdominal aortic aneurysms, endarterectomy of the carotid bifurcation, and bypass of iliac, femoral, and popliteal arteries. In preparation for major arterial surgery, the need for imaging was keenly felt. Physiological studies to select patients for surgery took a backseat to arteriograms and physical examination — in part because pulse palpation and patient testimony were the only methods readily available for measuring preoperative functional impairment or postoperative success. Invasive methods for studying blood flow were limited to electromagnetic flowmetry, which was performed in the operating room with the patient anaesthetized. No effort was made to duplicate normal physiological conditions. Prior to the 1960s, a few surgeons and internists maintained rudimentary vascular labs where systolic blood pressure and blood flow were measured plethysmographically.
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Conference papers on the topic "Electromagnetic Airy pulse"

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Ye, Caiyong, Kexun Yu, Pei Yuan, Qingming Xin, and Jianbo Sun. "Comparison between self-excitation and pulse-excitation in air-core pulsed alternator system." In 2012 16th International Symposium on Electromagnetic Launch Technology (EML). IEEE, 2012. http://dx.doi.org/10.1109/eml.2012.6325096.

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de Luna, J. N. C., M. O. del Fierro, and J. L. Muñoz. "Analysis of Leakage Failures in Flash Memory Devices and Root Cause Identification." In ISTFA 2000. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.istfa2000p0089.

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Abstract An advanced flash bootblock device was exceeding current leakage specifications on certain pins. Physical analysis showed pinholes on the gate oxide of the n-channel transistor at the input buffer circuit of the affected pins. The fallout contributed ~1% to factory yield loss and was suspected to be caused by electrostatic discharge or ESD somewhere in the assembly and test process. Root cause investigation narrowed down the source to a charged core picker inside the automated test equipment handlers. By using an electromagnetic interference (EMI) locator, we were able to observe in real-time the high amplitude electromagnetic pulse created by this ESD event. Installing air ionizers inside the testers solved the problem.
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Pratap, S. B., J. R. Kitzmiller, T. A. Aanstoos, K. G. Cook, R. N. Headifen, R. A. Kuenast, and R. A. Lee. "Optimization and design of the air core compulsator for the cannon caliber electromagnetic launcher." In Ninth IEEE International Pulsed Power Conference. IEEE, 1993. http://dx.doi.org/10.1109/ppc.1993.512870.

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Asmar, Elias, Gilles Bejjani, Rami Chamoun, Joe Hachem, Ghanem Oweis, and Matthias Liermann. "Experimental Study on Active Pneumatic Damping of Pulsatile Flow Delivered From Peristaltic Pump." In ASME/BATH 2017 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fpmc2017-4330.

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Hemodynamic flow loops are widely used for research on causes and cures of cardiovascular diseases. They replicate physiological blood flow pulsatility in vitro. Many different pump types exist for such flow loops. The variety of the flow loop types shows the lack of one concept that satisfies all requirements, which are ease of handling and sterilization, flexible and accurate realization of various profiles, low shear rate exerted on fluid, low amount of circulating fluid. This paper experimentally proves the concept of a new type of pulse damping/pulse generating device that can be used for flow loops that are operated with a peristaltic pump. The pulse generating device fulfills the double function of damping the undesired pulsatility of the peristaltic pump and injecting a desired pulsatility that replicates the flow profile delivered by the heart. The injection of the desired pulsatility is achieved by modulation of air pressure in a damping device. The experimental results show that it is possible to achieve the dual function in one device. An electromagnetic flow sensor provides the feedback for the air pressure control and a high-response flow control valve controls the pressure in the pulse damper/generator. The response time and accuracy of the sensor proved to be critical for achieving the objective. With the limitations of the relatively cheap components used for this functional prototype, the mean error in the flow rate signal could be kept below 10% for a simulated adult pulse rate of 60bpm.
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Yang, H. S., M. S. Rho, H. Y. Park, J. H. Choi, Y. B. Cha, J. H. Kwon, C. H. Yang, and J. B. Hwang. "Permanent Magnet High Speed Starter/Generator System Development Directly Coupled to Gas Turbine Engine for Mobile Auxiliary Power Unit." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53165.

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This paper shows that high-speed starter/generator system is more efficient for gas turbine engine for mobile auxiliary power unit. The system is rated at 25kW, 325Vdc, 60krpm. The system also provides 4kw to start the 100kW engine. The system consists of a high speed machine directly coupled to the gas turbine engine, a power control unit (PCU), and an electronics controller. The PCU is consist of boost converter that boost from 24V (Battery of Vehicle) to 235V for driving high-speed motor, inverter drive PMSM (Permanent Magnet Synchronous Motor), and buck converter drop the voltage to 28V. For PMSM driving the system applied SVPWM (Space Vector Pulse Width Modulation), sensorless algorithm. And then, to supply optimized power, “Constant Power Control Algorithm” is applied. For the system development, electromagnetic analysis, structure analysis, rotor dynamic analysis, and heat transfer analysis are done. After manufacturing, we have tested the system many times to produce verified performance.
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Popov, A., I. Prokopovich, and S. Zapunidi. "Excitation and propagation of electromagnetic pulses along dielectric-air interface." In 2013 15th International Conference on Transparent Optical Networks (ICTON). IEEE, 2013. http://dx.doi.org/10.1109/icton.2013.6602987.

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CIURBA PASTOR, Anca-Paula, Ionel HAIDU, Ovidiu GACEU, and Mihaela BIRIȘ MATEI. "The Thermal Water in Bihor County and its Benefits for Treating Arthritis. A Case Study: Băile 1 Mai Resort." In Air and Water – Components of the Environment 2022 Conference Proceedings. Casa Cărţii de Ştiinţă, 2022. http://dx.doi.org/10.24193/awc2022_21.

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Due to the existence of important thermal water resources, in Bihor County there are many locations where thermo-mineral waters are used for bathing or for leisure. In this study, we focus on the spas in Bihor County (Băile Felix, Băile 1 Mai, Băile Tinca, Stâna de Vale, to which we add the village of Sarcău), where these waters have been used for a long time and which have the necessary infrastructure for therapy. Thus, we aim to highlight the particularities of these waters, the presentation of the balneotherapy procedures used and the emphasis on the beneficial effects of balneotherapy on osteoarthritis (most of the pathologies treated here are osteoarthritis). In the spa treatment bases, along with thermal water, other procedures are used that enhance the effect of these waters (physiotherapy, TENS (transcutaneous electrical nerve stimulation), TCARE (capacitive and resistive electrical transfer), therapeutic massage, lymphatic drainage massage, ultrasound, electrotherapy, low frequency electromagnetic pulse therapy, galvanic baths, paraffin wraps, laser therapy). The main pathologies treated by the mentioned procedures are inflammatory rheumatic diseases, neuromuscular diseases.
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Li, Xi Yuan, Li Wei Song, and Shu Mei Cui. "Energy reclaim control of an air-core pulsed alternator." In 2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD). IEEE, 2015. http://dx.doi.org/10.1109/asemd.2015.7453622.

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Xie, Xianfei, Kexun Yu, Caiyong Ye, Lei Tang, and Hua Zhang. "Transient analysis of air-core pulsed alternators in self-excitation mode." In 2014 17th International Symposium on Electromagnetic Launch Technology (EML). IEEE, 2014. http://dx.doi.org/10.1109/eml.2014.6920209.

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Li, Xiyuan, Shumei Cui, and Xin Zhao. "A flexible waveform conditioning strategy of an air-core pulsed alternator." In 2014 17th International Symposium on Electromagnetic Launch Technology (EML). IEEE, 2014. http://dx.doi.org/10.1109/eml.2014.6920639.

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Reports on the topic "Electromagnetic Airy pulse"

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Sprangle, Phillip, Joseph Penano, Bahman Hafizi, and Chris Kapetanakos. Ultrashort Laser Pulses and Electromagnetic Pulse Generation in Air and on Dielectric Surfaces. Fort Belvoir, VA: Defense Technical Information Center, July 2003. http://dx.doi.org/10.21236/ada416663.

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