Results 251 to 260 of about 16,517,842 (295)
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Unusual attempted suicide by shooting through heart
Forensic Science International, 2005Gunshot wounds in the heart are frequent suicidal injuries, especially in men. Most of them are lethal, but some cases of survival due to immediate and proper surgical treatment are reported. However, survival without specific treatment is extremely rare. In our case, a 44-year man attempted suicide by home-made shooting device.
P, Kadis +3 more
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Detection of pneumothorax with lateral shoot-through digital radiography
Clinical Radiology, 1993The aim of this study was to compare the performance of digital frontal radiographs vs digital lateral shoot-through radiographs for the diagnosis of pneumothoraces in supine patients. A total of 146 pairs of radiographs were performed on 32 ventilated patients on the Intensive Care Unit.
R A, Morgan +4 more
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An Adjustable Sensorless Shoot-Through Protection for H-Bridges
IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018The converters relying on H-bridge configurations exhibit complementary “symmetrical” switching devices for which a triggering dead-time must be considered in order to prevent shoot-through faults. There are two ways in which such dead-time is usually added to the bridges' input signals; namely, from the switching program itself, and by using dedicated
Luis Ibarra +2 more
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Active thermal control by controlled shoot-through of power devices
IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017Active Thermal Control (ATC) consists in driving power switches in a less efficient way when low load conditions are present. The resulting wasted power is used to self-heat the device, reducing amplitude and occurrence of thermal cycles and hence improving the reliability.
Alessandro Soldati +4 more
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A shoot-through protection scheme for converters built with SiC JFETs
2009 IEEE Energy Conversion Congress and Exposition, 2009SiC JFET has been an attractive device for the converter construction due to its superior switching performance and high temperature operation capability. But the shoot-through protection remains a challenge because of the limited knowledge and normally-on characteristics of this device. This paper presents a novel shoot-through protection approach.
null Rixin Lai +3 more
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IGBT half-bridge shoot-through characterization for model validation
IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting, 2002A circuit is described for making a variety of measurements on half-bridge insulated gate bipolar transistor (IGBT) pairs for validating IGBT models. The circuit incorporates two robust isolated gate drives for the IGBTs. Each IGBT is driven with an eight-cycle square-wave burst with a long dead-time between bursts so that heat-sinking requirements are
D.W. Berning, A.R. Hefner
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A Shoot-Through Protection Scheme for Converters Built With SiC JFETs
IEEE Transactions on Industry Applications, 2010The SiC JFET is an attractive semiconductor device due to its superior switching performance and high-temperature operating capability. Its shoot-through protection remains a challenge due to the limited practical knowledge existent on this device and due to its inherent normally on nature.
Rixin Lai +5 more
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Hysteresis current control with distributed shoot‐through states for impedance source inverters
International Journal of Circuit Theory and Applications, 2015SummaryThis paper presents a hysteresis current control technique with shoot‐through states distribution. This control algorithm could be applied to three‐level and multi‐level inverters with any impedance source network where reference current control signal along with shoot‐through states are required.
Oleksandr Husev +4 more
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Potential to prevent mass shootings through domestic violence firearm restrictions
Criminology & Public Policy, 2019Research Summary We investigated the extent to which the 89 mass shooters who committed their acts from 2014 through 2017 were known or suspected to commit domestic violence prior to the shooting, whether they had been engaged in the justice system in a way that could have led to domestic violence firearm ...
April M. Zeoli, Jennifer K. Paruk
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Data Organization of LED Bar Display Panel with Shoot-Through Connection
Chinese Journal of Liquid Crystals and Displays, 2011Based on dual-color screen with 12 interfaces as an example,the unit circuit configu-ration of LED bar display panel was described.On this basis,the data organization of LED bar display panel was in-depth discussed when the data was horizontally shifting in the manner of shoot-through connection.In this paper,a display round was designed to lively ...
朱云芳 ZHU Yun-fang +2 more
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