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Journal articles on the topic 'Surge Pulse'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Sisk, Cheryl L., Heather N. Richardson, Patrick E. Chappell, and Jon E. Levine. "In Vivo Gonadotropin-Releasing Hormone Secretion in Female Rats during Peripubertal Development and on Proestrus*." Endocrinology 142, no. 7 (2001): 2929–36. http://dx.doi.org/10.1210/endo.142.7.8239.

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Abstract Pubertal development in female rats is characterized by increased LH levels and the appearance of estrogen-dependent afternoon LH mini-surges. In these studies we performed the first analysis of GnRH patterns in peripubertal rats to determine whether there are similar changes in pulsatile GnRH release. Microdialysis samples were collected at 5-min intervals throughout a 5-h afternoon period from 22 rats sampled on a single day between 30–47 days of age. Adult female rats were sampled on proestrus for comparison. In 30- to 33-day-old rats, GnRH release was infrequent (2.7 pulses/5 h; n

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2

Zhao, Zhongyi, Shenyu Wang, and Yongzhi Cui. "Research on Protection Performance of Surge Protective Devices against Electromagnetic Pulse." Applied Bionics and Biomechanics 2022 (April 11, 2022): 1–13. http://dx.doi.org/10.1155/2022/7194855.

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To evaluate the protection performance of SPD (surge protective device) against electromagnetic pulse, the response ability of several typical surge protective devices to wide and narrow electromagnetic pulses was tested by using a SPD response ability test system. The results showed that SPD commonly used in lightning surge protection had certain ability to suppress electromagnetic pulse conduction disturbance. Gas discharge tubes presented typical clamping characteristics for wide pulses. MOV and TVS had obvious clamping effect on wide pulses, while had no clamping effect on narrow pulses, b

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3

Clarke, I. J. "Gonadotrophin-releasing hormone secretion (GnRH) in anoestrous ewes and the induction of GnRH surges by oestrogen." Journal of Endocrinology 117, no. 3 (1988): 355–60. http://dx.doi.org/10.1677/joe.0.1170355.

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ABSTRACT Anoestrous ewes were studied to determine the pattern of secretion of gonadotrophin-releasing hormone (GnRH) in the resting state and following a single i.m. injection of 50 μg oestradiol benzoate. In three out of four untreated ewes, two or three GnRH pulses were observed over a 6-h sampling period. In the fourth sheep the GnRH pulse frequency was higher (six pulses/6 h), but GnRH pulse amplitudes were lower. Following oestrogen treatment, GnRH pulses continued until the occurrence of an LH surge 12 h later. In five out of six sheep sampled during the oestrogen-induced LH surge a mar

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4

Kossowski, Tomasz, and Paweł Szczupak. "Identification of Lightning Overvoltage in Unmanned Aerial Vehicles." Energies 15, no. 18 (2022): 6609. http://dx.doi.org/10.3390/en15186609.

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This paper presents research on the model developed in the Matlab environment for simulating effects of overvoltage in an unmanned aerial vehicle (UAV) upon lightning discharge. They are based on transmittance obtained from voltage surge impulse measured in drone circuits. Overvoltage waveforms were measured at the input and output of different parts of the machine. It was then possible to calculate the transmittance of those (chosen) circuits. The motors, supply system, communication lines, and sensors were primarily tested. Both positive and negative polarization of the surge pulse were used

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5

Phillips, D. J., J. T. Cummins, and I. J. Clarke. "Effects of modifying gonadotrophin-releasing hormone input before and after the oestrogen-induced LH surge in ovariectomized ewes with hypothalamo-pituitary disconnection." Journal of Endocrinology 127, no. 2 (1990): 223–33. http://dx.doi.org/10.1677/joe.0.1270223.

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ABSTRACT The patterns of gonadotrophin-releasing hormone (GnRH) input to the pituitary gland that affect the expression of a positive-feedback event by oestrogen on LH secretion were investigated in ovariectomized ewes with hypothalamo-pituitary disconnection (HPD). In experiment 1, ovariectomized HPD ewes were given hourly i.v. pulses of 250 ng GnRH and an i.m. injection of 50 μg oestradiol benzoate (OB). The ewes were given a bolus pulse of 2·25 μg GnRH 16 h after injection of OB, followed by half-hourly pulses of 250 ng GnRH for 14 h (treatment A). The LH surge response was significantly (P

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6

Karsch, Fred, and Neil Evans. "Feedback actions of estradiol on GnRH secretion during the follicular phase of the estrous cycle." Acta Neurobiologiae Experimentalis 56, no. 3 (1996): 715–25. http://dx.doi.org/10.55782/ane-1996-1177.

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The pattern of GnRH secretion during the follicular phase of the estrous cycle of sheep is characterized by an initial marked change in episodic secretion (increased frequency and decreased amplitude) followed by a massive and sustained discharge – the preovulatory GnRH surge. Studies employing a physiological model for the follicular phase have revealed that estradiol has profound and complex feedback effects on GnRH release during the preovulatory period. These include both quantitative effects on pulses (stimulation of frequency, inhibition of amplitude) and qualitative effects (altering pu

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Kalyada, Taisiya V., A. S. Afanasev, and A. B. Kuznetsov. "MEDICAL AND BIOLOGICAL PROBLEMS IN THE USE OF EQUIPMENT GENERATING ELECTROMAGNETIC BROADBAND SURGE PULSES." Hygiene and sanitation 97, no. 12 (2018): 1195–97. http://dx.doi.org/10.18821/0016-9900-2018-97-12-1195-1197.

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Introduction. In recent decades, there have been created powerful pulsed sources of electromagnetic radiation capable of generating and transmitting high peak signals with effective antennas. Wide-band and ultra-wide-band (NB, UWB) generator complexes in the frequency range from 0.5 Hz to 100 Hz, concentrating the energy in ultrashort pulses in duration, have become widespread. Most studies of the biological effects of these radiations are associated with their special purpose (directional action). Today, high-voltage pulsed radiation is widely used in such areas as radiolocation and navigatio

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8

Hu, M. H., X. F. Li, B. McCausland, et al. "Relative Importance of the Arcuate and Anteroventral Periventricular Kisspeptin Neurons in Control of Puberty and Reproductive Function in Female Rats." Endocrinology 156, no. 7 (2015): 2619–31. http://dx.doi.org/10.1210/en.2014-1655.

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Kisspeptin plays a critical role in pubertal timing and reproductive function. In rodents, kisspeptin perikarya within the hypothalamic arcuate (ARC) and anteroventral periventricular (AVPV) nuclei are thought to be involved in LH pulse and surge generation, respectively. Using bilateral microinjections of recombinant adeno-associated virus encoding kisspeptin antisense into the ARC or AVPV of female rats at postnatal day 10, we investigated the relative importance of these two kisspeptin populations in the control of pubertal timing, estrous cyclicity, and LH surge and pulse generation. A 37%

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9

Kamb, Barclay, and Hermann Engelhardt. "Waves of Accelerated Motion in a Glacier Approaching Surge: the Mini-Surges of Variegated Glacier, Alaska, U.S.A." Journal of Glaciology 33, no. 113 (1987): 27–46. http://dx.doi.org/10.1017/s0022143000005311.

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AbstractPeriods of dramatically accelerated motion, in which the flow velocity increases suddenly from about 55 cm/d to a peak of 100–300cm/d and then decreases gradually over the course of a day, occurred repeatedly during June and July 1978–81 in Variegated Glacier (Alaska), a surging-type glacier that surged in 1982–83. These “mini-surges” appear to be related mechanistically to the main surge. The flow-velocity peak propagates down-glacier as a wave at a speed of about 0.3 km/h, over a reach of about 6 km in length. It is accompanied by a propagating pressure wave in the basal water system

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10

Kamb, Barclay, and Hermann Engelhardt. "Waves of Accelerated Motion in a Glacier Approaching Surge: the Mini-Surges of Variegated Glacier, Alaska, U.S.A." Journal of Glaciology 33, no. 113 (1987): 27–46. http://dx.doi.org/10.3189/s0022143000005311.

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AbstractPeriods of dramatically accelerated motion, in which the flow velocity increases suddenly from about 55 cm/d to a peak of 100–300cm/d and then decreases gradually over the course of a day, occurred repeatedly during June and July 1978–81 in Variegated Glacier (Alaska), a surging-type glacier that surged in 1982–83. These “mini-surges” appear to be related mechanistically to the main surge. The flow-velocity peak propagates down-glacier as a wave at a speed of about 0.3 km/h, over a reach of about 6 km in length. It is accompanied by a propagating pressure wave in the basal water system

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11

Shin, Y. W., and A. H. Wiedermann. "A Method for Suppression of Pressure Pulses in Fluid-Filled Piping—Part I: Theoretical Analysis." Journal of Pressure Vessel Technology 114, no. 1 (1992): 60–65. http://dx.doi.org/10.1115/1.2929013.

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A simple, nondestructive method to suppress pressure pulses in fluid-filled piping is theoretically analyzed, and the result provides the basis needed for design and evaluation of a pressure-pulse suppression device based on the proposed theory. The method is based on forming of fluid jets in the event of a pressure surge, such that the pulse height and the energy of the pulse are reduced. The results for pressure pulses in the range of practical interest show that a substantial reduction in the pulse height can be attained, with accompanying reduction of the pulse remaining in the system. The

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12

Hilsenbeck, Jochen, Michael Treu, Roland Rupp, Kathrin Rüschenschmidt, Ronny Kern, and Matthias Holz. "Investigations on Surge Current Capability of SiC Schottky Diodes by Implementation of New Pad Metallizations." Materials Science Forum 645-648 (April 2010): 673–76. http://dx.doi.org/10.4028/www.scientific.net/msf.645-648.673.

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In this paper we describe how a merged pn Schottky diode (MPS diode) is capable to drive surge current levels far beyond the normal current of the diode and how to improve the device in order to achieve even higher surge current levels. For a sine half wave of 10 µs an 8A MPS diode (size: 2.52mm2) with conventional Al pad metallization shows surge current levels of greater than 500A, using Cu it can be increased to ~900A. For 10ms pulse length a different behaviour was observed, here diodes with Al pad metallization show a higher surge current level (80A) compared to Cu pad metallization (~ 40

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13

Lazov, Lyubomir, Tsanko Karadzhov, Edmunds Teirumnieks, Antons Pacejs, and Conyu Conev. "METHODS FOR MEASUREMENT OF PULSE PARAMETERS OF FIBER LASERS." ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 22, 2024): 406–12. http://dx.doi.org/10.17770/etr2024vol3.8185.

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Fiber lasers play an increasingly pivotal role in numerous scientific and industrial domains, spanning from optical communications to medicine. Their utilization across various technological realms continues to surge, prompting the demand for novel physical methods and principles to precisely measure laser pulse parameters during technological investigations. This article provides an overview of contemporary techniques and approaches employed in measuring the parameters of laser pulses generated by fiber laser systems, with a focus on accurately determining pulse frequency and duration. Specia

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14

Clarke, I. J., J. T. Cummins, M. Jenkin, and D. J. Phillips. "The oestrogen-induced surge of LH requires a 'signal' pattern of gonadotrophin-releasing hormone input to the pituitary gland in the ewe." Journal of Endocrinology 122, no. 1 (1989): 127–34. http://dx.doi.org/10.1677/joe.0.1220127.

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ABSTRACT Two experiments were conducted with ovariectomized and hypothalamo-pituitary disconnected (HPD) ewes to ascertain the pattern of inputs, to the pituitary gland, of gonadotrophin-releasing hormone (GnRH) necessary for the full expression of an oestrogen-induced LH surge. The standard GnRH replacement to these sheep was to give pulses of 250 ng (i.v.) every 2 h; at the onset of experimentation, pulses were given hourly. In experiment 1, groups of sheep (n = 7) were given an i.m. injection of 50 μg oestradiol benzoate, and after 10 h the GnRH pulse frequency or pulse amplitude was double

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15

Liu, Tai Long, Hua Biao Jin, Qi Dou Wu, Peng Li, Long Huang, and Fang Ping Yu. "Surge Voltage Suppression Circuit Design of On-Board SCR Controller." Applied Mechanics and Materials 333-335 (July 2013): 2358–63. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.2358.

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SCR controller is one of the components of the SCR system, which should pass the test pulse 5b. The features and test requirements of pulse 5b are introduced. Its energy is very large, so passing the test is difficult. Two surge voltage suppression circuits are designed. The first design utilized a surge stopper-LT4356, its work process includes fault timer period, warning period and cooling period. During the cooling period, the SCR controller cannot work normally. So connecting a capacitor in parallel to the output of the surge voltage suppression circuit is used to improving its performance

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16

Lee, Youngjun, and Young Sam Lee. "A Low-Cost Surge Current Detection Sensor with Predictive Lifetime Display Function for Maintenance of Surge Protective Devices." Sensors 20, no. 8 (2020): 2310. http://dx.doi.org/10.3390/s20082310.

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In this study, a low-cost surge current detection sensor (SCDS) that can measure high current surges using a low-current toroidal coil is proposed for maintenance of a surge protective device (SPD). The proposed SCDS is designed to display the predicted lifetime of the SPD based on the magnitude of surge current and number of surges. In addition, a method for measuring high surge current using a toroidal coil that can usually measure only low current is proposed. A lightning strike counter consists of a microcontroller with a low-power liquid crystal display (LCD) driver, 3 VDC lithium battery

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17

Weatherall, Eva, and Geoff R. Willmott. "Applications of tunable resistive pulse sensing." Analyst 140, no. 10 (2015): 3318–34. http://dx.doi.org/10.1039/c4an02270j.

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This Review focusses on the recent surge in applied research using tunable resistive pulse sensing, a technique used to analyse submicron colloids in aqueous solutions on a particle-by-particle basis.

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18

Adriaanse, Ria, Georg Brabant, Erik Endert, Frederique J. Bemelman, and Wilmar M. Wiersinga. "Pulsatile thyrotropin and prolactin secretion in a patient with a mixed thyrotropin- and prolactin-secreting pituitary adenoma." European Journal of Endocrinology 130, no. 2 (1994): 113–20. http://dx.doi.org/10.1530/eje.0.1300113.

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Adriaanse R, Brabant G, Endert E, Bemelman FJ, Wiersinga WM. Pulsatile thyrotropin and prolactin secretion in a patient with mixed thyrotropin- and prolactin-secreting pituitary adenoma. Eur J Endocrinol 1994;130:113–20. ISSN 0804–4643 The circadian and pulsatile thyrotropin (TSH) and prolactin (PRL) release was investigated in a patient with slight hyperthyroidism due to a mixed TSH- and PRL-secreting pituitary adenoma. Blood was withdrawn every 10 min for 24 h (before and after medical treatment); pulse characteristics were analyzed by Desade and Cluster programs (values as mean±sd). The ina

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19

Clément, Frédérique, and Jean-Pierre Françoise. "Mathematical Modeling of the GnRH Pulse and Surge Generator." SIAM Journal on Applied Dynamical Systems 6, no. 2 (2007): 441–56. http://dx.doi.org/10.1137/060673825.

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20

V.P., Goutham Murari, Selvakumar G., and Chandrasekhara Sastry C. "Experimental Investigation of Wire-EDM Machining of Low Conductive Al-SiC-TiC Metal Matrix Composite." Metals 10, no. 9 (2020): 1188. http://dx.doi.org/10.3390/met10091188.

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The application of metal matrix composites (Al-SiC-TiC) in aerospace and defense industries have surged in the areas of hull safety, aviation fins, and closure units. The close to ideal solution for generating powdered mixture availing ball milling, for processing of a metal matrix composite of size 24 × 24 × 5.95 cm3 and composition of 75% Al, 10% SiC, and 10% TiC weight composition is 10:1 ball weight ratio, ball size of 8 mm, rotation speed of 250 rpm, and milling time of 4 h. The powdered mixture is compressed to pellet, sintered for two hours, and further silver coated in a physical vapor

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21

Levinshtein, Michael E., Tigran T. Mnatsakanov, Pavel A. Ivanov, John W. Palmour, Mrinal K. Das, and Brett A. Hull. "Self-Heating of 4H-SiC PiN Diodes at High Current Densities." Materials Science Forum 600-603 (September 2008): 1007–10. http://dx.doi.org/10.4028/www.scientific.net/msf.600-603.1007.

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Self-heating in high-voltage 4H-SiC PiN diodes has been studied experimentally and theoretically in dc and 8-ms single pulse modes. To simulate the self-heating, an electro-thermal model was used to calculate non-isothermal current-voltage characteristics at dc and current-time dependences at pulsed measurements. The dynamic instability of N-type was observed: the current decreases in spite of increasing of bias applied to the structure. At dc, irreversible diode degradation was found to occur at a current density of about 1700 A/cm2. Under a single current surge 8-ms pulse, the loss of therma

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Wang, Yifan, Meng Guo, Zehui Lu, et al. "Pattern effect suppression of pulse signals based on pre-signal control method." Journal of Optics 26, no. 4 (2024): 045703. http://dx.doi.org/10.1088/2040-8986/ad2d38.

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Abstract By using the pre-signal light as the control light, we propose a method to suppress the transient effect of erbium-doped fiber amplifiers for low-frequency pulse signals. The pattern effect of the pulse signals within the low frequency range (400–1000 Hz) and 1550 nm band is relieved, and the optical surge coefficient Cs decreases to about 0.54 dB. Experimental results show that the proposed method has better performances in suppressing pattern effect in comparison with the conventional continuous light control scheme and higher output gain compared to the compensation pulsed light me

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Wallace, J. M., G. B. Martin, and A. S. McNeilly. "Changes in the secretion of LH pulses, FSH and prolactin during the preovulatory phase of the oestrous cycle of the ewe and the influence of treatment with bovine follicular fluid during the luteal phase." Journal of Endocrinology 116, no. 1 (1988): 123–35. http://dx.doi.org/10.1677/joe.0.1160123.

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ABSTRACT It has previously been shown that treatment of ewes with bovine follicular fluid (bFF) throughout the luteal phase of the oestrous cycle lowers plasma levels of FSH but increases the frequency and amplitude of the pulses of LH. Under these conditions, ovarian follicles grow to a maximum diameter of 2·7 mm and have a reduced capacity to release oestradiol. We have examined the nature of the gonadotrophin signals controlling follicular development in the normally cycling ewe and have investigated the effects of previous exposure to bFF on these signals and the follicular responses to th

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Fujita, Akira, Shohei Kato, Takao Hirai, and Shigemitsu Okabe. "Surge Simulation in Pulse Transformer Model by Numerical Electromagnetic Field Computation." IEEJ Transactions on Power and Energy 123, no. 11 (2003): 1350–56. http://dx.doi.org/10.1541/ieejpes.123.1350.

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Bizjak, M., M. Bekovic, and A. Hamler. "Spark Breakdown in Gas-Discharge-Tube Surge Arrester at Voltage Pulse." IEEE Transactions on Power Delivery 30, no. 3 (2015): 1552–60. http://dx.doi.org/10.1109/tpwrd.2014.2377783.

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Czieselsky, Katja, Mel Prescott, Robert Porteous, et al. "Pulse and Surge Profiles of Luteinizing Hormone Secretion in the Mouse." Endocrinology 157, no. 12 (2016): 4794–802. http://dx.doi.org/10.1210/en.2016-1351.

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Chen, Wanjun, Ruize Sun, Kun Xiao, et al. "A behavioral model for MCT surge current analysis in pulse discharge." Solid-State Electronics 99 (September 2014): 31–37. http://dx.doi.org/10.1016/j.sse.2014.04.044.

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28

Kolamala, Srivikas Kolamala Srivikas, and Wakhare Prajwal Wakhare Prajwal. "AN ELECTROMAGNETIC PULSE PROOF VEHICLE." International Journal for Research Trends and Innovation 8, no. 10 (2023): 599–626. https://doi.org/10.5281/zenodo.10119421.

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An electromagnetic pulse (EMP) is a powerful burst of electromagnetic radiation that can be generated by a high-altitude nuclear explosion or a non-nuclear device. In our modern world, cars are equipped with a wide range of sophisticated electronics, making them highly vulnerable to the destructive effects of an EMP strike. When an EMP occurs, it releases surges of current that can wreak havoc on the delicate circuits and chips found in these electronic systems.The sources of EMP radiation are diverse, with nuclear explosions and lightning strikes being the most common. In the case of a delibe

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Safonov, Evgeniy, Vladimir Frolov, Ruslan Zhiligotov, and Yuri Petrenya. "The Specifics of PTC Thermistor Applications for Limiting Surge Currents." Energies 17, no. 2 (2024): 318. http://dx.doi.org/10.3390/en17020318.

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This paper investigates the possibilities of limiting emergency short current pulses by using materials with a positive temperature coefficient. A computational model and method for simulating this process were proposed. Barium titanate was considered a promising material for current-limiting devices due to its low cost, ease of manufacturing and autonomy. The current-limiting properties of a PTC thermistor device were estimated in relation to a significant pulse current overload (10 ms). The value of taking into account the varistor effect when modeling energy dissipation by a PTC thermistor

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Rajapandian, P., R. Ramyasri, and A. Deepa Shivani. "FRAUD PULSE." International Scientific Journal of Engineering and Management 03, no. 12 (2024): 1–6. https://doi.org/10.55041/isjem02166.

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The proliferation of e-commerce and advanced communication technologies has made credit cards the dominant payment method globally, both online and offline. This surge in credit card usage, however, has concurrently fueled a significant rise in fraudulent activities, resulting in substantial financial losses for individuals and businesses alike. Fraudsters continuously adapt their tactics, posing a significant challenge for researchers developing effective fraud detection systems. The inherent class imbalance in credit card fraud datasets—where legitimate transactions vastly outnumber fraudule

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Zuo, Boxi, Chengqi Peng, and Wenying Liu. "Research on Inventory Simulation of Pulse Supply Chain Based on Controllable Lead Time." International Journal of Science and Business 27, no. 1 (2023): 216–25. http://dx.doi.org/10.58970/ijsb.2143.

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In the e-commerce environment, how supply chain enterprises respond to surge demands has become an urgent issue to address. This article takes into consideration the overall interests of the supply chain system, aiming to maximize the supply chain profit. By applying system dynamics theory, an in-depth analysis is conducted on a two-tier supply chain consisting of a single manufacturer and a single retailer with controllable lead times. A system dynamics model is constructed using Vensim simulation software as the modeling platform, and simulation analyses are performed for both single and mul

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Bugała, Dorota, Artur Bugała, and Wojciech Machczyński. "Simulation of the Immunity Test of a Photovoltaic System Disturbed by Electromagnetic Voltage Surge." Energies 14, no. 12 (2021): 3646. http://dx.doi.org/10.3390/en14123646.

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This paper presents a computer simulation model (in the MATLAB/Simulink environment) of a photovoltaic system disturbed by a 1.2/50 µs voltage surge pulse, while operating as part of the fixed system of an intelligent building. The tested part of the system consisted of a single PV module and a single-phase DC/AC voltage source converter provided with a maximum power point tracking system. The simulation of the test performed in accordance with the IEC 61000-4-5 standard required the development of a model of a surge waveform generator and a model of a coupling/decoupling network. The 1.2/50 μ

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Tarun Debnath, Md. Imran Nazir, Pallab Kanti Podder, and Sohag Sarker. "Design and implementation of a novel dust collector controller for powder production industry." World Journal of Advanced Research and Reviews 18, no. 3 (2023): 1323–31. http://dx.doi.org/10.30574/wjarr.2023.18.3.1247.

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Industries those work with powder either in production or processing always left a portion of industrial dust in the air. By releasing this air directly in the surrounding environment of the industry pollution occurs. Therefore air filtration system is mandatory in these industries and usually bag filter dust collector controller is used. To control and maintain the proper functionality of the bag filtration system PLC based control system or a modular control board is used. In this paper, a novel dust collector controller is designed which can be installed by any user without having any progr

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Tarun, Debnath, Imran Nazir Md., Kanti Podder Pallab, and Sarker Sohag. "Design and implementation of a novel dust collector controller for powder production industry." World Journal of Advanced Research and Reviews 18, no. 3 (2023): 1323–31. https://doi.org/10.5281/zenodo.8435357.

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Industries those work with powder either in production or processing always left a portion of industrial dust in the air. By releasing this air directly in the surrounding environment of the industry pollution occurs. Therefore air filtration system is mandatory in these industries and usually bag filter dust collector controller is used. To control and maintain the proper functionality of the bag filtration system PLC based control system or a modular control board is used. In this paper, a novel dust collector controller is designed which can be installed by any user without having any progr

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Sundaresan, Siddarth, Vamsi Mulpuri, and Ranbir Singh. "Surge Current and Avalanche Robustness of Commercial 1200 V SiC Schottky Diodes." Materials Science Forum 963 (July 2019): 544–48. http://dx.doi.org/10.4028/www.scientific.net/msf.963.544.

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This paper investigates the 10 ms surge current (IFSM) and single-pulse avalanche energy (EAS) limits of 1200 V/10 A SiC Schottky rectifiers from several commercial vendors. GeneSiC’s 1200 V/10 A diode recorded maximum IFSM values of 162 A at TC=25°C and 135 A at TC=150°C, which were the highest amongst investigated devices. The diode sustains junction temperatures as high as 910°C during surge current operation, which results in eventual failure of the Aluminum based metallization.

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de Morais, André M. de, Rodrigo M. S. de de Oliveira, and Marcus V. A. Nunes. "Mitigation of Insulator Lightning-Induced Voltages by Installing Parallel Low-Voltage Surge Arresters." Energies 16, no. 3 (2023): 1111. http://dx.doi.org/10.3390/en16031111.

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In this paper, we propose a mitigation method for reducing lightning-induced insulator voltages based on the installation of low-voltage surge arresters aligned parallelly to the insulator. The three-dimensional finite-difference time-domain (FDTD) method is applied to numerically model a real surge arrester residual voltage evaluation system. The application of a transient current pulse, typical of lightning discharges, is considered in our numerical model. We considered cases with one or two surge arresters installed per phase, in three different geometric and parametric configurations for i

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Thomas, GB, GB Martin, JR Ford, PM Moore, BK Campbell, and DR Lindsay. "Secretion of LH, FSH and Oestradiol-17ß During the Follicular Phase of the Oestrous Cycle in the Ewe." Australian Journal of Biological Sciences 41, no. 3 (1988): 303. http://dx.doi.org/10.1071/bi9880303.

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Plasma concentrations of LH, FSH and oestradiol-17iJ were measured in blood samples taken at 15 min intervals for 48 h during the follicular phase of four Merino ewes. The amplitude of pulses of LH and the mean concentration of LH were higher at the beginning of the follicular phase, 36-24 h before the preovulatory surge of LH (amplitude 2�4 ng ml- 1, mean concentration 3�9 ng ml- 1), than at the end, 24-0 h before the preovulatory surge (amplitude 1� 2 � 0�1 ng ml- 1; mean concentration 1�4 � 0�1 ng ml- 1). There was no change in the inter-pulse interval during this time (mean 74 � 5 min). Ov

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Bajaj, Gita. "HCL Infosystems Ltd. (A) and (B)." Asian Case Research Journal 23, no. 01 (2019): 119–51. http://dx.doi.org/10.1142/s0218927519500056.

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When Prem Seshadri was appointed executive vice chairman and MD of HCLI, the Indian IT conglomerate was bleeding in losses. Developing competitiveness and a DNA of evolution was imperative. This case details a two-year journey of reinventing the performance management system and using technology for behavioral change and cultural transformation. PULSE was developed to implement a weekly feedback system for 4,500 employees. However, in 2016, PULSE data revealed a surge in silver and bronze badges and a decline in gold ones. What story was PULSE telling? Students apply diagnosis at organizationa

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Sanchez Gelós, Diego F., Matilde E. Otero-Losada, Francisco Azzato, and José Milei. "Morning surge, pulse wave velocity, and autonomic function tests in elderly adults." Blood Pressure Monitoring 17, no. 3 (2012): 103–9. http://dx.doi.org/10.1097/mbp.0b013e3283532d40.

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Baba, Y., and Vladimir A. Rakov. "Applications of the FDTD Method to Lightning Electromagnetic Pulse and Surge Simulations." IEEE Transactions on Electromagnetic Compatibility 56, no. 6 (2014): 1506–21. http://dx.doi.org/10.1109/temc.2014.2331323.

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Edirisinghe, Mahesh. "Nonlinear Load and RLC Pulse Shaping Surge Generator Models in Simulation Environment." International Letters of Chemistry, Physics and Astronomy 36 (July 2014): 334–47. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.36.334.

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The present study was performed in order to understand how a nonlinear load affects the characteristics of the RLC pulse shaping surge generator waveforms under simulation studies. The obtained results were compared when analytical equations were used as source models for both 1.2/50 µs voltage & 8/20 µs current impulses. Three circuit models; Capacitor Bank generator, Combination waveform generator and Schaffner generator were evaluated under nonlinear loads varied from 10Ω to 106 Ω for voltage impulses and for current impulses it was from 10-4 Ω to 1 Ω. As it can perceive from the analys

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Edirisinghe, Mahesh. "Nonlinear Load and RLC Pulse Shaping Surge Generator Models in Simulation Environment." International Letters of Chemistry, Physics and Astronomy 36 (July 15, 2014): 334–47. http://dx.doi.org/10.56431/p-nq40n9.

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The present study was performed in order to understand how a nonlinear load affects the characteristics of the RLC pulse shaping surge generator waveforms under simulation studies. The obtained results were compared when analytical equations were used as source models for both 1.2/50 µs voltage & 8/20 µs current impulses. Three circuit models; Capacitor Bank generator, Combination waveform generator and Schaffner generator were evaluated under nonlinear loads varied from 10Ω to 106 Ω for voltage impulses and for current impulses it was from 10-4 Ω to 1 Ω. As it can perceive from the analys

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and Biomechanics, Applied Bionics. "Retracted: Research on Protection Performance of Surge Protective Devices against Electromagnetic Pulse." Applied Bionics and Biomechanics 2023 (November 1, 2023): 1. http://dx.doi.org/10.1155/2023/9848065.

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Caraty, A., A. Locatelli, and G. B. Martin. "Biphasic response in the secretion of gonadotrophin-releasing hormone in ovariectomized ewes injected with oestradiol." Journal of Endocrinology 123, no. 3 (1989): 375–82. http://dx.doi.org/10.1677/joe.0.1230375.

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ABSTRACT In ovariectomized ewes, an injection of oestrogen initially inhibits the tonic secretion of LH, and then induces a large release of LH similar to the preovulatory surge in intact ewes. The pattern of hypothalamic secretion of gonadotrophin-releasing hormone (GnRH) into the pituitary portal blood during this biphasic response to oestrogen was investigated in conscious, unrestrained, ovariectomized adult Ile-de-France ewes during the breeding season. The ewes were ovariectomized and implanted with cannulae for portal blood collection on the same day. Seven days later, portal and periphe

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Paul, Frank, Livia Piermattei, Désirée Treichler, et al. "Three different glacier surges at a spot: what satellites observe and what not." Cryosphere 16, no. 6 (2022): 2505–26. http://dx.doi.org/10.5194/tc-16-2505-2022.

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Abstract. In the Karakoram, dozens of glacier surges occurred in the past 2 decades, making the region a global hotspot. Detailed analyses of dense time series from optical and radar satellite images revealed a wide range of surge behaviour in this region: from slow advances longer than a decade at low flow velocities to short, pulse-like advances over 1 or 2 years with high velocities. In this study, we present an analysis of three currently surging glaciers in the central Karakoram: North and South Chongtar Glaciers and an unnamed glacier referred to as NN9. All three glaciers flow towards t

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Koppenaal, D. W., J. A. M. J. van Dieten, A. M. I. Tijssen, and J. de Koning. "Induction of the gonadotrophin surge-inhibiting factor by FSH and its elimination: a sex difference in the efficacy of the priming effect of gonadotrophin-releasing hormone on the rat pituitary gland." Journal of Endocrinology 138, no. 2 (1993): 191–201. http://dx.doi.org/10.1677/joe.0.1380191.

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ABSTRACT This study was designed to explore the efficacy of gonadotrophin-releasing hormone (GnRH) to antagonize the effect of gonadotrophin surgeinhibiting factor (GnSIF) on the timing of the induction by GnRH of the maximal self-priming effect on pituitary LH responsiveness. The GnSIF levels were increased by FSH treatment and reduced after gonadectomy. Female rats were injected s.c. with 10 IU FSH or saline (control) on three occasions during the 4-day cycle. Serial i.v. injections of GnRH (500 pmol/kg body weight) were administered to intact rats on the afternoon of pro-oestrus or 15–30 mi

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Wu, Jiupeng, Na Ren, Qing Guo, and Kuang Sheng. "A Comparative Study of Silicon Carbide Merged PiN Schottky Diodes with Electrical-Thermal Coupled Considerations." Materials 13, no. 11 (2020): 2669. http://dx.doi.org/10.3390/ma13112669.

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A comparative study of surge current reliability of 1200 V/5 A 4H-SiC (silicon carbide) MPS (Merged PiN Schottky) diodes with different technologies is presented. The influences of device designs in terms of electrical and thermal aspects on the forward conduction performance and surge current capability were studied. Device forward characteristics were simulated and measured. Standard single-pulse surge current tests and thermal impedance measurements were carried to show their surge capability and thermal design differences. An advanced thermal RC (thermal resistance-capacitance) model, with

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Sarker, MH, M. Akter, S. Ali, SAM Arif Ul Haque, and M. Rahman. "Combining Microwave and Optical Sensor to Improve Post Cyclone Affected Area Mapping." Journal of Environmental Science and Natural Resources 12, no. 1-2 (2021): 1–9. http://dx.doi.org/10.3329/jesnr.v12i1-2.51978.

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Storm surge was adversely affected the life of people and property of coastal region of Bangladesh due to cyclone Roanu on 22 May 2016. It is important to delineate this surge extent and pattern which helps in the vulnerability assessment for relief and rehabilitation purposes. Optical sensor is not enough for outlining the affected areas. Because during cyclone, bad weather (cloud) usually prevails over the swamped area. Microwave remote sensing, can solve the problem because the radar pulse can penetrate cloud cover and it has ability to sharply distinguish between land and water. Combinatio

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Schöffl, Tobias, Georg Nagl, Johannes Hübl, and Roland Kaitna. "Pulse-Doppler radar measurements of debris flows: High-resolution monitoring of surge dynamics from two events in the Gadria Creek (Italy)." E3S Web of Conferences 415 (2023): 03027. http://dx.doi.org/10.1051/e3sconf/202341503027.

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As a consequence of their spontaneous occurrence, and frequent formation of multiple surges with high sediment loads, debris flows are considered one of the most hazardous gravity-driven mass movements in montane regions. Field measurements of surface velocities are an essential link in the chain of understanding fundamental process dynamics and applied protection against debris flows. In order to measure the velocities of multiple consecutive surges within a single debris-flow event, a PD radar (pulse-Doppler high-frequency radar) sensor for high-resolution real-time debris-flow monitoring ha

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Campbell, B. K., G. E. Mann, A. S. McNeilly, and D. T. Baird. "Pulsatile secretion of inhibin, oestradiol and androstenedione by the ovary of the sheep during the oestrous cycle." Journal of Endocrinology 126, no. 3 (1990): 385–93. http://dx.doi.org/10.1677/joe.0.1260385.

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ABSTRACT The pattern of pulsatile secretion of inhibin, oestradiol and androstenedione by the ovary at different stages of the oestrous cycle in sheep was studied in five Finn–Merino ewes in which the left ovary had been autotransplanted to the neck. The ewes had jugular venous blood samples collected at 4-hourly intervals from 42 h before the induction of luteolysis by i.m. injection of cloprostenol (100 μg) on day 10 of the oestrous cycle, until day 3 of the following cycle. There were five periods of intensive blood sampling, when both ovarian and jugular venous blood samples were collected

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