Results 21 to 30 of about 431,067 (243)

Simultaneous injection of chemical agents and carbon dioxide to enhance the sweep efficiency from fractured tight core samples

Energy Reports, 2021
Foams would play a substantial role in mobility control and are considered an efficient chemical agent to improve the oil recovery factor. Co-injection of foam and carbon dioxide (CO2) would be one of the optimum injectivity scenarios in fractured tight ...
Rahmad Syah, S.M. Alizadeh, Leila Darvishzadeh, Marischa Elveny, Maryam Abedi, Dadan Ramdan   +5 more
doaj   +1 more source

Investigation of the Influence of Gas Pressure at the Inlet in Jet-Reactive Turbine on its Performance Indicators [PDF]

Problems of the Regional Energetics, 2018
The results of gas current calculations in a flow part in not reversive jet-reactive turbine at pressure upon an input to the turbine up to 10 МPа (earlier calculations were spent up to 0.9 МPа), executed in program complex FlowVision for the first time ...
Vanyeyev S.M., Meleychuk S.S., Baga V.N., Rodymchenko T.S.   +3 more
doaj   +1 more source

Study on the Effects of Inflow Conditions on the Inlet Performance of a Dorsal S-Shaped Inlet

Aerospace
As an important aerodynamic configuration of the new-generation UAV, the dorsal S-shaped inlet’s performance is affected by the complex coupling of inflow conditions and the boundary layer ingestion effect.
Meng Cao, Daxin Liao, Hexiang Wang, Neng Xiong, Fangji Li, Dawei Liu, Ce Zhang, Jie Chen, Yang Tao   +8 more
doaj   +1 more source

Effects of Nacelle Inlet Geometry on Crosswind Distortion Under Ground Static Conditions

Aerospace
The aerodynamic performance of nacelle inlets under crosswind conditions is crucial for engine stability and efficiency. Current parametric investigations are predominantly focused on cruise operations, with minimal consideration given to crosswind ...
Xiufeng Song, Binbin Tang, Changkun Li, Zhenlong Wu   +3 more
doaj   +1 more source

Effect of magnesium sulfate pretreatment on onset and recovery characteristics of cisatracurium [PDF]

Korean Journal of Anesthesiology, 2012
BackgroundTo determine how pretreatment with magnesium sulfate (MgSO4) potentiates neuromuscular blocking agents. We investigated how the onset and recovery characteristics of cisatracurium are changed by pretreatment with MgSO4.MethodsAfter ...
Sang-Hun Kim, Keum-Young So, Ki-Tae Jung
doaj   +1 more source

Wind Tunnel Experiment and Numerical Simulation of Secondary Flow Systems on a Supersonic Wing

Aerospace
Aircraft secondary flow systems are small-flow circulation devices that are used for thermal and cold management, flow control, and energy generation on aircraft. The aerodynamic characteristics of main-flow-based inlets have been widely studied, but the
Sheng Zhang, Zheng Lin, Zeming Gao, Shuai Miao, Jun Li, Lifang Zeng, Dingyi Pan   +6 more
doaj   +1 more source

Dimensionality Reduction Optimization of High Subsonic Unmanned Aerial Vehicles Intake

气体物理
To address the problem of poor aerodynamic performance in the S-shaped intake duct of a subsonic unmanned aerial vehicle (UAV), the study investigates how to optimize its design to achieve the highest possible total pressure recovery coefficient and ...
Zeqi QI, Zheng GUO, Suqi CHEN, Ke YU
doaj   +1 more source

Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
wiley   +1 more source

The effect of gel foam mattress use during total hip replacement surgeries on the development of pressure ulcers in the recovery unit: a quasi-experimental study

Medical Science and Discovery, 2018
Objective:  This study was conducted on patients undergoing total hip replacements in order to examine the effect of the use of a gel foam mattress during surgery on preventing the development of pressure ulcers. Material and Method: A quasi-experimental design, with a pretest-posttest control group, was used for this study, which was carried out in ...
ŞAHİN, Büşra, ÇAM, Rahşan
openaire   +2 more sources

CFD-Driven Enhancement for Supersonic Aircraft Variable Geometry Inlet

Applied Sciences
High-speed propulsion systems require supersonic inlets for operation; however, these inlets lose efficiency when the flight speed range is wide. Fixed-geometry inlets designed for particular conditions encounter operational difficulties when running at ...
Abdullah Ezzeldin, Zhenlong Wu
doaj   +1 more source