Results 51 to 60 of about 420,355 (316)

Experimental Study and Prediction Modelling for Slippage Effect of Gas-Liquid Two-Phase Nozzle Flow

Shiyou jixie, 2022
In order to accurately predict the dynamic parameters of gas-liquid two-phase throttling production of wellbore,a physical simulation test device for gas-liquid two-phase nozzle flow was built.With this device,liquid holdups at different gas-liquid ...
Chen Zhengyu, Xiao Yuyang, Chen Junliang, Liu Jie   +3 more
doaj  

TURBOSHAFT ENGINE THERMOGASDYNAMIC PARAMETERS CALCULATION METHOD BASED ON BLADE-TO BLADE DESCRIPTION OF TURBOMASHINES. PART II. STAGE AND MULTISTAGE COMPRESSORS PARAMETERS DETERMINATION

Авіаційно-космічна техніка та технологія, 2019
Gas Turbine Engine (GTE) operating characteristics such as thrust (or power), specific fuel consumption and other cycle parameters on different regimes, can be determined by engine modeling and applying correspondent calculation method.
Людмила Георгиевна Бойко, Александр Евгеньевич Демин, Наталия Владимировна Пижанкова   +2 more
doaj   +1 more source

Analytical and experimental research on impact load during rapid engagement of gas turbine

Zhongguo Jianchuan Yanjiu, 2022
ObjectivesThis paper proposes a theoretical calculation method for obtaining the impact load and dynamic response of shafting during the rapid engagement process of a combined gas turbine and gas turbine (COGAG) power plant.
Hao CHEN, Ruiping ZHOU, Hong FAN, Junsong LEI, Zhaowei ZHOU   +4 more
doaj   +1 more source

ATG4B is required for mTORC1‐mediated anabolic activity and is associated with clinical outcomes in non‐small cell lung cancer

FEBS Open Bio, EarlyView.
The relationship between anabolic and catabolic processes governing lung cancer cell growth is nuanced. We show that ATG4B, an autophagy regulator, is elevated in lung cancer and that high ATG4B is associated with worse patient outcomes. Targeting ATG4B in cells reduces growth, protein synthesis, and mTORC1 activity, demonstrating a new relationship ...
Patrick J. Ryan, Bethany C. Guerra, Selina Uranga, Jessica M. Cardin, Steven E. Riechman, Mariana Janini Gomes, James D. Fluckey   +6 more
wiley   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Optimization of exhaust catalytic manifold of internal combustion engine

Journal of Materials Science: Materials in Engineering
The paper presents the results of gas dynamic calculation and strength analysis required to optimize the mathematical model of the body of the catalytic collector of a passenger car.
Vladimir K. Nikolaev, Arkady A. Skvortsov, Zamir F. Khudayarov, Roman S. Nikolaev   +3 more
doaj   +1 more source

A new approach to analyzing wellbore pressure dynamically in well-killing

Frontiers in Earth Science, 2023
Casing pressure during well-killing is both an unknown variable that must be addressed and a time-dependent function. Therefore, the calculation of the dynamic reaction of wellbore pressure during well-killing is a dynamic indeterminate boundary problem.
Pu Liu, Zhiping Wang, ChenLong Wang, Zhengqiang Tang, Hao Yu, Huixin Liu, Kaixuan Li   +6 more
doaj   +1 more source

Adjustment of Coatings Morphology and Particle Distribution of Layered Silicates by Freeze‐Drying for Improved Gas Barriers

Advanced Engineering Materials, EarlyView.
Freeze‐drying of layered silicate is the key to get coatings with superior gas barrier. Freeze‐drying of layered silicates modified with dodecylamine (DDA) is a highly effective technique for the preparation of barrier pigments that significantly mitigate the permeation of oxygen, water vapor, and hydrogen through polymer films containing these ...
Joshua Lommes, Moritz Bätcher, Andrea Deißenberger, Volkmar Stenzel, Andreas Hartwig   +4 more
wiley   +1 more source

A Dynamic Reserve Evaluation Method for an Ultra-Deep Fractured Tight Sandstone Gas Reservoir

Energies
Dynamic reserves evaluation is crucial for the development and assessment of gas reservoirs. However, ultra-deep fractured tight sandstone gas reservoirs pose unique challenges due to their abnormally high pressure, tight matrix, and complex fracture ...
Xinxing He, Chenhui Wang, Baohua Chang, Zhenglin Cao, Haifa Tang   +4 more
doaj   +1 more source