Due to high energy density,clean combustion products and abundant resources,natural gas hydrates(NGHs)have been regarded as an important clean energy source with the potential for large-scale development and ***,pilot...
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Due to high energy density,clean combustion products and abundant resources,natural gas hydrates(NGHs)have been regarded as an important clean energy source with the potential for large-scale development and ***,pilot tests in NGHs show that their production rates are far below commercial *** well technology may lead to a solution to this problem because it can dramatically expand the drainage area of production *** paper presents the practical rate transient analysis for multilateral horizontal wells in *** developing solution to the diffusivity equation of multilateral horizontal wells in NGHs,the superposition principle and reciprocity are *** wrote the governing equation in cylindrical coordinates to describe the NGH flow *** used the moving boundaries and dissociation coefficients to model the solid-to-gas transition process in *** obtain solutions for flow in hydrate reservoirs,we used Laplace transforms and the Stehfest numerical inversion *** principle and Gaussian elimination are applied to obtain the desired solution for multilateral horizontal *** validated our proposed model with a commercial numerical *** performing sensitivity analyses,effects on production behavior of the number of branches,dissociation coefficient,radius of the region with dissociated hydrate,and dispersion ratio are determined.A synthetic case study is conducted to show the typical production behaviors.
As machine learning (ML) continues to find applications, extensive research is currently underway across various domains. This study examines the current methodologies of ML being investigated to optimize semiconducto...
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Based on the continuous rise of the technological level of the Internet of Things, the Internet of Things has already evolved into a new industry at this stage. It has been widely used in many industries and has conti...
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Quadcopter UAV elastic suspension system has a good development prospect due to its flexible and easy-to-operate features. However, during the flight transportation process, the oscillation of load, the irregular exte...
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Using software robots that communicate with systems via their user interfaces, robotic processautomation (RPA) attempts to automate corporate operations while increasing efficiency and cutting costs. To prevent ineff...
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作者：
Guerfel, MohamedMessaoud, HassaniUniversity of Sousse
Higher Institute of Applied Sciences and Technology of Sousse Electronics Department Sousse Tunisia
National Engineering School of Monastir Monastir Tunisia
This paper proposes an innovative Dynamic Principal Component Analysis (DPCA) scheme to perform fault detection and identification (FDI) for systems affected by process faults. In this scheme, a new modeling method is...
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Quality by design (QbD) is a strategic approach that ensures that quality becomes a built-in feature of processes in production. It presents a systematic approach to process development and quality management. It begi...
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Although robot-based automation in chemistry laboratories can accelerate the material development process,surveillance-free environments may lead to dangerous accidents primarily due to machine control *** detection t...
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Although robot-based automation in chemistry laboratories can accelerate the material development process,surveillance-free environments may lead to dangerous accidents primarily due to machine control *** detection techniques can play vital roles in addressing these safety issues;however,existing detection models still suffer from insufficient accuracy in environments involving complex and noisy *** the aim of improving safety in a surveillance-free laboratory,wereport a deep learning(DL)-based object detector,namely,*** the foremost and frequent problem of detecting positions of transparent chemical vessels,DenseSSD achieved a mean average precision(mAP)over 95%based on a complex dataset involving both empty and solution-filled vials,greatly exceeding those of conventional detectors;such high precision is critical to minimizing failureinduced ***,DenseSSD was observed to be generalizable to other laboratory environments,maintaining its high precisions under the variations of solution colors,camera view angles,background scenes,experiment hardware and type of chemical *** robustness of DenseSSD supports that it can universally be implemented in diverse laboratory *** study conclusively demonstrates the significant utility of DenseSSD in enhancing safety within automated material synthesis ***,the exceptional detection accuracy of DenseSSD opens up possibilities for its application in various other fields and scenarios where precise object detection is paramount.
The optimization of power consumption of manufacturing lines (ML) is a relevant topic in the context of increasing electricity prices. This paper presents the topic of optimizing the energy consumption of a production...
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We investigated the parametric optimization on incremental sheet forming of stainless steel using Grey Relational Analysis(GRA) coupled with Principal Component Analysis(PCA). AISI 316L stainless steel sheets were use...
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We investigated the parametric optimization on incremental sheet forming of stainless steel using Grey Relational Analysis(GRA) coupled with Principal Component Analysis(PCA). AISI 316L stainless steel sheets were used to develop double wall angle pyramid with aid of tungsten carbide tool. GRA coupled with PCA was used to plan the experiment conditions. control factors such as Tool Diameter(TD), Step Depth(SD), Bottom Wall Angle(BWA), Feed Rate(FR) and Spindle Speed(SS) on Top Wall Angle(TWA) and Top Wall Angle Surface Roughness(TWASR) have been studied. Wall angle increases with increasing tool diameter due to large contact area between tool and workpiece. As the step depth, feed rate and spindle speed increase,TWASR decreases with increasing tool diameter. As the step depth increasing, the hydrostatic stress is raised causing severe cracks in the deformed surface. Hence it was concluded that the proposed hybrid method was suitable for optimizing the factors and response.
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