Junfeng Qi
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View article: CycleGan-based kV-to-MV image translation for potential in vivo dosimetry application: concept proposal and cross-institutional validation
CycleGan-based kV-to-MV image translation for potential in vivo dosimetry application: concept proposal and cross-institutional validation Open
Without complex and time-consuming Monte Carlo simulations, the proposed ECA-CycleGAN network facilitates the efficient establishment of the reference MV portal images applicable to in vivo transmitted dosimetry. It may potentially improve…
View article: Effect of Feature Size on Defects, Microstructure, and Mechanical Properties of Selective Laser Melted AlSi10Mg Lattice Structure
Effect of Feature Size on Defects, Microstructure, and Mechanical Properties of Selective Laser Melted AlSi10Mg Lattice Structure Open
Selective laser melting lightweight lattice structures have broad application prospects in the aerospace field. Understanding the dependence of mechanical performance on feature size is crucial for structure design. This work optimized the…
View article: A novel approach of jet polishing for interior surface of small-grooved components using three developed setups
A novel approach of jet polishing for interior surface of small-grooved components using three developed setups Open
Highlights A novel approach of multi-phase jet polishing is proposed using a developed polisher, consisting of solid, liquid and gas phases. An abrasive air jet polishing is suggested through a customized polisher, including solid and gas …
View article: Improving Printing Resolution and Surface Finish by Thermodynamics Control and Process Optimization During High-Precision Micro Laser Powder Bed Fusion (Μ-Lpbf) of Al-Mg-Sc-Zr Alloy
Improving Printing Resolution and Surface Finish by Thermodynamics Control and Process Optimization During High-Precision Micro Laser Powder Bed Fusion (Μ-Lpbf) of Al-Mg-Sc-Zr Alloy Open
View article: Quantitative Frequency Security Assessment of Modern Power System Considering All the Three Indicators in Primary Frequency Response
Quantitative Frequency Security Assessment of Modern Power System Considering All the Three Indicators in Primary Frequency Response Open
The primary frequency response scale is deteriorating in the modern power system due to the high penetration of different power devices. Frequency security assessments are essential for the operation or stability-checking of the power syst…
View article: Simulation of a new respiratory phase sorting method for 4D-imaging using optical surface information towards precision radiotherapy
Simulation of a new respiratory phase sorting method for 4D-imaging using optical surface information towards precision radiotherapy Open
View article: Hosting capacity of distributed generation based on holomorphic embedding method in distribution networks
Hosting capacity of distributed generation based on holomorphic embedding method in distribution networks Open
Considering the voltage rise problem caused by integrating large-scale distributed generation into the distribution networks, a distributed generation hosting capacity assessment method based on the improved holomorphic embedding method is…
View article: Influence of doubly-fed induction generator on power system oscillation center migration
Influence of doubly-fed induction generator on power system oscillation center migration Open
With the proposal of the goals of carbon peaking and carbon neutrality, China’s power grid is moving towards low-carbon transformation. As a result, the power grid is increasingly affected by the dynamic response characteristics of renewab…
View article: A Simulation Study on the Effect of Residual Stress on the Multi-Layer Selective Laser Melting Processes Considering Solid-State Phase Transformation
A Simulation Study on the Effect of Residual Stress on the Multi-Layer Selective Laser Melting Processes Considering Solid-State Phase Transformation Open
The selective laser melting (SLM) manufacturing process is a complex process involving moving a molten pool, rapid non-equilibrium solidification and solid phase transformation. If the thermal residual stress is too large, it may lead to w…
View article: Research on splitting criterion of the power system with wind-storage system integrated
Research on splitting criterion of the power system with wind-storage system integrated Open
As the last defense line of the power system, splitting control is of great significance to the safety and stability of power grid. However, with the increasing penetration of wind power, photovoltaic, energy storage and other power electr…
View article: Research on Frequency Response Modeling and Frequency Modulation Parameters of the Power System Highly Penetrated by Wind Power
Research on Frequency Response Modeling and Frequency Modulation Parameters of the Power System Highly Penetrated by Wind Power Open
Renewable energy units led by wind power participate in diversified control primary frequency modulation, making the frequency response modes and the setting of frequency modulation parameters more complex. This paper proposes a frequency …
View article: Operation optimization analysis of 600 MW steam turbine under new situation
Operation optimization analysis of 600 MW steam turbine under new situation Open
It is of great significance to study the operation optimization of thermal power units under the new situation and the economic operation under low load. The bearing vibration of a 600 MW thermal power unit has been too large since it was …
View article: Numerical Weather Prediction Correction Strategy for Short-Term Wind Power Forecasting Based on Bidirectional Gated Recurrent Unit and XGBoost
Numerical Weather Prediction Correction Strategy for Short-Term Wind Power Forecasting Based on Bidirectional Gated Recurrent Unit and XGBoost Open
Accurate short-term wind power forecasting (WPF) plays a crucial role in grid scheduling and wind power accommodation. Numerical weather prediction (NWP) wind speed is the fundamental data for short-term WPF. At present, reducing NWP wind …
View article: Research on the Unstable Branch Screening Method for Power System With High-Proportion Wind Power
Research on the Unstable Branch Screening Method for Power System With High-Proportion Wind Power Open
The sooner the system instability is predicted and the unstable branches are screened, the timelier emergency control can be implemented for a wind power system. In this paper, aiming at the problem that the existing unstable branch screen…
View article: The comparison of accuracy and practicability between ultrasound and spiral CT in the diagnosis of intestinal obstruction
The comparison of accuracy and practicability between ultrasound and spiral CT in the diagnosis of intestinal obstruction Open
Background: Acute abdominal pain is often caused by intestinal obstruction, with high morbidity, and mortality, so that the early diagnosis is particularly important. Currently, both spiral CT and ultrasound are common imaging diagnostic m…
View article: The fault analysis for low pressure last stage blade of the deep load changing gas-steam combined cycle steam turbine unit
The fault analysis for low pressure last stage blade of the deep load changing gas-steam combined cycle steam turbine unit Open
In this paper, the causes of the abrasion at the fir-tree type blade root of low pressure last stage which are loosely assembled and the axial movement of the blade root to the intake side of gas-steam combined cycle steam turbine unit are…
View article: Prevalence, Awareness, and Treatment of Isolated Diastolic Hypertension: Insights From the China PEACE Million Persons Project
Prevalence, Awareness, and Treatment of Isolated Diastolic Hypertension: Insights From the China PEACE Million Persons Project Open
Background Characterizing and assessing the prevalence, awareness, and treatment patterns of patients with isolated diastolic hypertension ( IDH ) can generate new knowledge and highlight opportunities to improve their care. Methods and Re…
View article: Safety Problems and Solutions of External Heating Network
Safety Problems and Solutions of External Heating Network Open
With the continuous development of society and economy, people's material and cultural needs and quality of life continue to improve, the pace of urbanization is accelerating, and the safety of urban heating network is more and more worthy…
View article: Research on the surface subsidence monitoring technology based on fiber Bragg grating sensing
Research on the surface subsidence monitoring technology based on fiber Bragg grating sensing Open