Results 21 to 30 of about 390,980 (293)

Effects of Inlet Pressure on Ignition of Spray Combustion

open access: yesInternational Journal of Aerospace Engineering, 2018
To evaluate the effects of inlet pressure on the ignition process of spray combustion, the images of the ignition process were recorded and the outlet temperatures were measured under inlet pressure of 0.04–0.16 MPa. The initial flame formation and flame
Jian Chen, Jianzhong Li, Li Yuan
doaj   +1 more source

Estimation of Super High-Rise Pumping Pressure for High-Performance Concrete Based on Computational Fluid Dynamics Modeling and Situation Measurement

open access: yesAdvances in Civil Engineering, 2021
Traditional methods fail to predict the pumping pressure loss of high-performance concrete properly in super high-rise pumping situations due to complex changes of concrete properties. Therefore, it is imperative to propose a relative accurate method for
Weijiu Cui, Chuankai Zhao, Sheng Wang
doaj   +1 more source

Thermal decomposition characteristics and thermal safety performance evaluation of HAN-based propellant under different external environmental stimulations

open access: yesCase Studies in Thermal Engineering, 2023
This research aims to investigate thermal characteristics and assess thermal hazards of hydroxylamine nitrate (HAN)-based liquid propellant using a combination of accelerating rate calorimeter and high-pressure differential scanning calorimetry ...
Limin Kang   +10 more
doaj   +1 more source

Experimental study on performance characteristics of a fin pump

open access: yesNihon Kikai Gakkai ronbunshu, 2016
A fin pump utilizing a forced vibration of a flexible sheet in the same way as a caudal fin motion was developed for a treatment of fetal hydrocephalus. This study conducted an experiment to investigate the performance characteristics of the fin pump.
Donghyuk KANG   +2 more
doaj   +1 more source

DESIGN AND INVESTIGATION OF WEIGHT BUNDLE SIMULATOR FOR INDIAN PHWR USING APDL - A THERMAL ASPECT [PDF]

open access: yesEPJ Web of Conferences, 2021
Under a postulated scenario of Loss of Coolant Accident (LOCA) with un-availability of emergency core cooling system (ECCS) for Indian Pressurized Heavy Water Reactor (IPHWR), the channel integrity needs to be assured.
Bhadauria Madhuri   +2 more
doaj   +1 more source

Study on evolution mechanism of unsteady transient pressure drop caused by gas phase cracking

open access: yesMeikuang Anquan, 2021
The dynamic evolution mechanism of gas explosion pressure drop is the basis of theoretical and field application research of point type gas fracturing coal seam permeability increasing technology.
LEI Yun   +3 more
doaj   +1 more source

NONINVASIVE RATE OF RISE OF INTRAVENTRICULAR PRESSURE AS A MEASURE OF RIGHT VENTRICULAR FUNCTION

open access: yesJournal of the American College of Cardiology, 2012
Complex right ventricular (RV) geometry makes volumetric assessment by 2-dimensional echocardiography difficult. Current measures of RV systolic function are susceptible to translational motion artifact. Intraventricular pressure rate of rise (dP/dt) correlates with myocardial contractility and dP/
Singbal, Yash   +7 more
openaire   +2 more sources

DETERMINATION OF EXPLOSION CHARACTERISTICS OF SUGAR DUST CLOUDS

open access: yesTransactions of the VŠB: Technical University of Ostrava, Safety Engineering Series, 2018
A dust explosion occurs when an airborne combustible dust cloud encounters an effective ignition source. The resulting pressure and temperature increase can severely injure people and damage surrounding equipment and buildings, and therefore needs to be ...
Richard KURACINA   +2 more
doaj   +1 more source

Numerical simulation on influence of initial pressures on gas explosion propagation characteristics in roadway

open access: yesFrontiers in Energy Research, 2022
In order to investigate the influence of initial pressures on the propagation characteristics of gas explosion in roadway, the physical model of gas explosion under different initial pressures in roadway is established by the fluid-structure interaction ...
Zhang Haohao   +4 more
doaj   +1 more source

Blood Pressure and Heart Rate Alterations through Music in Patients Undergoing Cataract Surgery in Greece

open access: yes, 2015
Introduction Music has been proposed as a safe, inexpensive, nonpharmacological antistress intervention. The purpose of this study was to determine whether patients undergoing cataract surgery while listening to meditation music experience lower levels ...
Dimitrios Theodoridis   +7 more
core   +1 more source

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