Results 21 to 30 of about 13,218,212 (303)
Shock and Vibration, 2020 This paper examines the effects of borehole arrangement on the failure process of coal-like materials based on its energy conversion and acoustic characteristics from the perspectives of energy, AE energy, AE spectrum, and frequency band.
Chuanbo Hao +3 more
doaj +1 more source
Put pressure worldwide on blood pressure control [PDF]
Journal of Thoracic Disease, 2016 There is a close relationship between high blood pressure (BP) levels and the risk of cardiovascular disease (CVD) and chronic kidney disease (1). The risk of these clinical outcomes is lowest at a BP of around 115/75 mmHg.
Costanzo S. +2 more
openaire +3 more sources
A Method of Two-Stage Pressure Control Based on Multistage Orifices
Applied Sciences, 2021 The interaction of pressure and flow in a hydraulic system with multiple working conditions, multiple actuators, and large flow limits action adjustment and control.
Junxia Gao +3 more
doaj +1 more source
Study on Multiparameter Precursory Information Identification of the Fracture of Yellow Sandstone
Advances in Civil Engineering, 2019 In order to explore the disaster caused by uncontrollable instability of coal and rock mass, a multiparameter fusion system is constructed to predict and predict disasters more accurately by identifying the mechanical and acoustic precursors of coal and ...
Xiao Fukun, Wang Houran, Liu Gang
doaj +1 more source
Performance Comparison of Control Strategies for a Variable-Thrust Solid-Propellant Rocket Motor
Aerospace, 2022 This paper deals with a performance comparison of the control algorithm for a variable-thrust solid-propellant rocket motor (VTSRM). To do this, we develop a simulation model of a VTSRM considering characteristic changes in the combustor and design ...
Jihyoung Cha +1 more
doaj +1 more source
Involvement of endothelium-derived relaxing factor in the pressure control of renin secretion from isolated perfused kidney [PDF]
, 1993 Using isolated rat kidneys perfused at controlled pressure, we examined a potential role of endothelium-derived relaxing factor (EDRF) in the pressure control of renin secretion.
Kurtz, Armin +5 more
core +1 more source
Real time control of the sawtooth period using EC launchers [PDF]
, 2009 Tokamak plasmas operating at high performance are limited by several MHD instabilities. The sawtooth instability limits the core plasma pressure and can drive the neoclassical tearing mode unstable, but also prevents accumulation of impurities in the ...
Paley, J.I. +6 more
core +2 more sources
Shock and Vibration, 2019 An experimental study was carried out to investigate the acoustic emission (AE) characteristics of dry and saturated basalt columnar joints under uniaxial compression and tensile damage by using the TAW-2000 rock experiment system and SH-IIAE system for ...
Liu Gang +3 more
doaj +1 more source
Practical Study for Investigation Proportional Pressure Relief Valve (DBETR-1X/25) Performance [PDF]
Engineering and Technology Journal, 2010 The trend in hydraulic power applications is to improve efficiency andperformance of hydraulic systems parts. This paper examines the performances ofdirect operated proportional pressure relief valve type (DBETR-1X/25). There arelimitations to the closed
Majid A. Oleiwi
doaj +1 more source
Real-Time Pressure Monitoring and Control of a Hydraulic System without Sensor [PDF]
, 2009 In a traditional hydraulic system, a pressure sensor is used to implement feedback control. However, there are many industrial cases where applications have required a pressure feedback but the media is so corrosive and/or dangerous, the sensor becomes ...
Craig Struthers +5 more
core +1 more source