Fujun Ma
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View article: Increasing disparities in human exposure to perfluorooctanesulfonic acid: Findings from per- and polyfluoroalkyl substance concentrations in 1999–2018 NHANES
Increasing disparities in human exposure to perfluorooctanesulfonic acid: Findings from per- and polyfluoroalkyl substance concentrations in 1999–2018 NHANES Open
View article: Study on the Performance Mechanism of Polyformaldehyde Glycol Ether Polymer for Crude Oil Recovery Enhancement
Study on the Performance Mechanism of Polyformaldehyde Glycol Ether Polymer for Crude Oil Recovery Enhancement Open
The demand for energy continues to increase as the global economy continues to grow. The role of oilfield chemicals in the process of oil and gas exploration, development, and production is becoming more and more important, and the demand …
View article: Pre-Synchronization Control Strategy for Virtual Synchronous Generator Grid Connection Based on Voltage Mathematical Relationships
Pre-Synchronization Control Strategy for Virtual Synchronous Generator Grid Connection Based on Voltage Mathematical Relationships Open
Conventional pre-synchronization control strategies for grid-connected virtual synchronous generator typically involve phase-locked loops, coordinate transformations or other non-linear computations, which may lead to substantial hardware …
View article: The mobility and fate of Cr during aging of ferrihydrite and ferrihydrite organominerals
The mobility and fate of Cr during aging of ferrihydrite and ferrihydrite organominerals Open
The fixation of environmentally hazardous Cr(VI) in soils is largely attributed to its retention by iron (Fe) (oxyhydr)oxides in the soil environment, which are prevailingly associated with organic carbon (OC). The effect of OC with differ…
View article: An Improved Phase-Disposition Pulse Width Modulation Method for Hybrid Modular Multilevel Converter
An Improved Phase-Disposition Pulse Width Modulation Method for Hybrid Modular Multilevel Converter Open
The hybrid modular multilevel converter (MMC) consisting of half-bridge submodules (HBSMs) and full-bridge submodules (FBSMs) is a promising solution for overhead lines high-voltage direct current systems (HVDC) due to the advantages of di…
View article: Study on the Dust Migration Rule and Optimal Ventilation Parameters in Tunnel Drilling and Blasting Under Forced Ventilation
Study on the Dust Migration Rule and Optimal Ventilation Parameters in Tunnel Drilling and Blasting Under Forced Ventilation Open
View article: Novel Insights into the Influence of Soil Microstructure Characteristics on the Migration and Residue of Light Non-Aqueous Phase Liquid
Novel Insights into the Influence of Soil Microstructure Characteristics on the Migration and Residue of Light Non-Aqueous Phase Liquid Open
Understanding the influence of soil microstructure on light non-aqueous phase liquids (LNAPLs) behavior is critical for predicting the formation of residual LNAPLs under spill condition. However, the roles of soil particle and pore on LNAP…
View article: BTG2 suppresses renal cell carcinoma progression through N6-methyladenosine
BTG2 suppresses renal cell carcinoma progression through N6-methyladenosine Open
The biological functions of N6-methyladenosine (m 6 A) modification of mRNA have recently received a great deal of attention. In previous studies, m 6 A methylation modification has been shown to regulate mRNA fate and to be crucial for th…
View article: Leaching Characteristics of Heavy Metals in the Baghouse Filter Dust from Direct-Fired Thermal Desorption of Contaminated Soil
Leaching Characteristics of Heavy Metals in the Baghouse Filter Dust from Direct-Fired Thermal Desorption of Contaminated Soil Open
After thermal desorption, the total amount of heavy metals (HMs) is enriched in baghouse filter dust. To further understand the related environmental impact, the leaching characteristics under various conditions must be explored. Therefore…
View article: Diffusion of Cement Kiln Co-Processing of Contaminated Soil in Selected Provinces of China: Engineering Practices, Modeling, and Driving Factors
Diffusion of Cement Kiln Co-Processing of Contaminated Soil in Selected Provinces of China: Engineering Practices, Modeling, and Driving Factors Open
Promoting the diffusion of remediation technologies is an attractive solution to environmental protection and urban sustainability challenges. To better understand technology diffusion, we reviewed the engineering practices of cement kiln …
View article: Multi-Port and -Functional Power Conditioner and Its Control Strategy with Renewable Energy Access for a Railway Traction System
Multi-Port and -Functional Power Conditioner and Its Control Strategy with Renewable Energy Access for a Railway Traction System Open
To relieve the contradiction between supply and demand, a multi-port power conditioner (MP-PC) and control strategy with renewable energy access for a railway traction system is presented, which is mainly composed of full-bridge-based MMC …
View article: A DC Hybrid Active Power Filter and Its Nonlinear Unified Controller Using Feedback Linearization
A DC Hybrid Active Power Filter and Its Nonlinear Unified Controller Using Feedback Linearization Open
In the current power system, the conversion between dc and ac is widely existing and the dc-side harmonic problem is prominent. To suppress the second-harmonic current at the dc side of a single-stage single-phase inverter, a dc hybrid act…
View article: Analysis and Control of Modular Multilevel Converter With Split Energy Storage for Railway Traction Power Conditioner
Analysis and Control of Modular Multilevel Converter With Split Energy Storage for Railway Traction Power Conditioner Open
In this paper, a railway power conditioner (RPC) based on modular multilevel converter (MMC) with split supercapacitor energy storage system (SCESS) is studied. In this case, the MMC-SCESS based RPC could not only provide normal negative s…
View article: Fault-Tolerant Oriented Hierarchical Control and Configuration of Modular Multilevel Converter for Shipboard MVdc System
Fault-Tolerant Oriented Hierarchical Control and Configuration of Modular Multilevel Converter for Shipboard MVdc System Open
Medium-voltage DC (MVDC) distribution system is considered as the promising power architecture of future shipboard power system. Fault-tolerance ability is of great importance for power system on ships. In this paper, zonal DC-DC conversio…
View article: Reactive Power Strategy of Cascaded Delta-Connected STATCOM Under Asymmetrical Voltage Conditions
Reactive Power Strategy of Cascaded Delta-Connected STATCOM Under Asymmetrical Voltage Conditions Open
Cascaded static synchronous compensator (STATCOM) is an effective solution for reactive power support in mid-dle/high voltage conditions, and it has been widely employed to control reactive power in photovoltaic (PV) plants, wind farms, an…
View article: Analysis and Comparison of Modular Railway Power Conditioner for High-Speed Railway Traction System
Analysis and Comparison of Modular Railway Power Conditioner for High-Speed Railway Traction System Open
With the rapid development of modern electrified railway, negative sequence current (NSC) minimization is one of the most important considerations in the high-speed railway traction system. In the past, many multiple or multilevel topologi…
View article: Overview of power quality analysis and control technology for the smart grid
Overview of power quality analysis and control technology for the smart grid Open
With the wide application of non-linear loads and the large-scale access of distributed energy generations based on power electronics equipments, power quality problems in the distribution network are increasingly serious with new characte…
View article: The Power Analysis and Its Control of Two-phase Orthogonal Power Supply for the Continuous Casting
The Power Analysis and Its Control of Two-phase Orthogonal Power Supply for the Continuous Casting Open
In order to improve the quality of the billet continuous casting, a two-phase orthogonal power supply (TPOPS) for electromagnetic stirrer is researched, which is composed of three-phase PWM rectifier and three-leg inverter. According to th…
View article: The Development of High-Current Power Supply System for Electrolytic Copper Foil
The Development of High-Current Power Supply System for Electrolytic Copper Foil Open
A 6.5 V/50 kA high-frequency switching power supply (HSPS) system composed of 10 power modules is developed to meet the requirements of copper-foil electrolysis. The power module is composed of a two-leg pulse width modulation (PWM) rectif…
View article: Large‐scale photovoltaic plant harmonic transmission model and analysis on resonance characteristics
Large‐scale photovoltaic plant harmonic transmission model and analysis on resonance characteristics Open
Harmonics generated from large‐scale grid‐connected photovoltaic plant (GCPV) has the characteristics of high frequency and wide frequency range. So the adverse impact of distributed parameter of high‐voltage cables becomes more significan…
View article: Research on Invisible Grid Management of Information Architecture of UI Design
Research on Invisible Grid Management of Information Architecture of UI Design Open
Information identification and artistic processing method of UI design has been a hot topic in design field.This paper puts forward a method of invisible grid management of information architecture of UI design.Using design geometry princi…