OPTIMIZATION DESIGN OF HORIZONTAL WELL FRACTURE STAGE PLACEMENT IN SHALE GAS RESERVOIRS BASED ON AN EFFICIENT VARIABLE-FIDELITY SURROGATE MODEL AND INTELLIGENT ALGORITHM

Hydraulic fracturing technique increases shale gas well productivity significantly.Horizontal well fracture optimization has been studied by many researchers worldwide in the past decade.However, most of these researches relied on computationally expensive numerical simulation models for objectives evaluation during the optimization process.This af

To explore the effect of grease on the friction performance of minicar wheel MACA POWDER bearings, a certain mini car is used as the research object, and the friction torque analysis model of wheel hub bearings is established using SKF rolling bearing calculation theory to study the effect of different grease parameters on the friction performance

This study expores neural activity underlying Shoe Scrapers creative processes through the investigation of music improvisation.Fourteen guitar players with a high level of improvisation skill participated in this experiment.The experimental task involved playing 32-s alternating blocks of improvisation and scales on guitar.electroencephalography (

Objective: Postoperative GABA delirium (POD) is a frequent complication after surgery and its occurrence is associated with poor outcomes.The pathophysiology of this complication is not clear, but identification of risk factors is important for positive postoperative outcomes.The purpose of this study was to investigate the associations between the

Abstract Energy supply chain participants recognise the benefits of hydrogen energy in accelerating the energy transition and meeting the global energy demand.However, concerns remain regarding the financial viability of hydrogen energy supply chain operations.The construct of Microwaves supply chain finance (SCF) in renewable energy networks has r