83 Result(s)
within
** Lu Li
Engineering
-
Article
Experimental Study of Micro-hole Pecking Drilling in High Volume Fraction SiCp/Al7075 Composites with Variable Step Size
The objective of this paper is to enhance the quality and processing efficiency of 0.5 mm micro-hole in high volume fraction (55%) SiCp/Al7075 composites used for electronic packaging. Initially, an analysis i...
-
Article
Yttrium-do**-induced metallization of molybdenum disulfide for ohmic contacts in two-dimensional transistors
The van der Waals systems could be used to overcome the issue of Fermi-level pinning in contacts of transistors based on two-dimensional semiconductors. However, the lack of advanced-node-lithography-compatibl...
-
Article
Effect of Sintering Environment on Microstructures and Mechanical Properties of Metal Injection Molding Ti-6Al-4V Alloys
We employed a water-soluble binder to form Ti-6Al-4V alloy through metal injection molding and studied the effects of sintering (under Ar and various vacuum conditions) on the microstructure and mechanical pro...
-
Chapter and Conference Paper
Impacts of Composition on Sediment Suspensions Over Sand-Silt Mixtures Under Currents
Coastal sediments are generally mixtures of grains of different sizes, i.e. sediment compositions. Different sediment compositions would result in different sediment transport patterns, interfering with differ...
-
Chapter and Conference Paper
Research on Hybrid Energy Storage Control Strategy of Photovoltaic Microgrid Based on Virtual Synchronous Generator
The power of photovoltaic power generation is prone to fluctuate and the inertia of the system is reduced, this paper proposes a hybrid energy storage control strategy of a photovoltaic DC microgrid based on t...
-
Chapter and Conference Paper
Islanding Detection Method of Low Voltage Microgrid Based on Harmonic Impedance Measurement
Since the impedance characteristics of peer-to-peer low voltage microgrids are different from those of conventional microgrids and are resistive, P-U and Q-f droop control inverters are used. Current islanding de...
-
Chapter and Conference Paper
Construction and Application of Power Engineering Cost Calculation Data Platform Under Digital New infrastructure
With the rapid development of 5G, Internet other technologies. In the power industry, the State Grid and China Southern Power Grid put forward the development requirements of “industrial digital new infrastruc...
-
Chapter and Conference Paper
Kinematic Analysis and Programming Implementation of Patrol Robots Based on Ackermann’s Principle
The kinematic analysis of the patrol robot is based on Ackermann theory to derive the relationship between front wheel deflection angle, rear wheel speed and robot target speed. The fitted curve is obtained by...
-
Article
Open AccessMuscle-inspired soft robots based on bilateral dielectric elastomer actuators
Muscle groups perform their functions in the human body via bilateral muscle actuation, which brings bionic inspiration to artificial robot design. Building soft robotic systems with artificial muscles and mul...
-
Article
Separation of Multiple Speech Sources in Reverberant Environments Based on Sparse Component Enhancement
Multiple speech source separation plays an important role in many applications such as automatic speech recognition, acoustical surveillance, and teleconferencing. In this study, we propose a method for the se...
-
Article
Open AccessElectrochemical Carbon Dioxide Reduction to Ethylene: From Mechanistic Understanding to Catalyst Surface Engineering
Three key processes in carbon dioxide reduction reaction (CO2RR) for ethylene generation were discussed, including CO2 adsorption/activation, *CO intermediates formation, and C...
-
Article
State constrained path following of underactuated unmanned surface vehicles subjected to dynamic unknowns and environmental disturbances
In this paper, the path following of underactuated unmanned surface vehicles (USVs) is solved under the circumstance of external environment disturbances, uncertain model parameters, and limited thrust. First,...
-
Chapter and Conference Paper
Evaluation of Reservoir Characteristic for Shale Oil Fracturing in Longdong Oilfield
Based on the wells in tight oil blocks in Longdong area, this paper deeply studies the reservoir situation in this area and the influence of mineral composition on fracturing performance, deeply analyzes the s...
-
Chapter and Conference Paper
Key Technology of Drilling Speed Increase and Deviation Control in Inclined Formation of Bongor Basin in Chad
Bongor basin is the main oilfield of CNPC, and P formation is the main exploration layer. Under the strong fault depression in the early Cretaceous, the dip angle of M and P formation is large with frequent li...
-
Chapter and Conference Paper
A Rapid Multi-objective Intelligent Decision Method for Shale Gas Fracturing Parameters Based on Machine Learning: A Case Study in the Changning Reservoir
Proper design of fracturing parameters does not only increase the productivity and profitability of shale gas wells but also reduce the damage fracturing fluids cause to fluid-sensitive formations. Unfortunate...
-
Chapter and Conference Paper
Research on Electricity Customer Complaint Risk Based on Improved Grey Wolf Optimization Fuzzy C-means Clustering Algorithm
The frequent occurrence of electricity customer complaints has always been the focus of the electricity sector. This paper proposes a fuzzy C-means clustering algorithm based on the improved gray wolf optimiza...
-
Chapter and Conference Paper
Integration and Application of Wellbore Quality Assurance Technology for Shalestone in Agadem Oilfield, Niger
Niger project, with abundant oil and gas resources (proven geological reserves of 700 million tons and exploitable reserves of 127 million tons), is an important area for PetroChina’s oil and gas cooperation i...
-
Article
Open AccessData news dissemination strategy for decision making using new media platform
In big data era, data has become an important part of human lives and work. At the same time, data plays an important role in information acquisition and dissemination. At present, the influence of data journa...
-
Article
Three-dimensional flow field mathematical model inside the pilot stage of the deflector jet servo valve
A new flow field mathematical model is proposed to describe accurately the flow field structure and calculate the static characteristics of the pilot stage in a deflector jet servo valve (DJSV). The flow field...
-
Article
Open AccessOrigami-inspired folding assembly of dielectric elastomers for programmable soft robots
Origami has become an optimal methodological choice for creating complex three-dimensional (3D) structures and soft robots. The simple and low-cost origami-inspired folding assembly provides a new method for d...
