Zhisheng Xu
YOU?
Author Swipe
View article: Polysaccharides and Polyacrylamide as Linear Polymeric Stabilizers for Zwitterionic Short-Chain Fluorocarbon Surfactant: Interfacial Properties, Apparent Viscosity, and Foam Performance
Polysaccharides and Polyacrylamide as Linear Polymeric Stabilizers for Zwitterionic Short-Chain Fluorocarbon Surfactant: Interfacial Properties, Apparent Viscosity, and Foam Performance Open
Polymeric stabilizers play a critical role in enhancing the stability and performance of firefighting foams. This study evaluated the influence of three polymeric stabilizers (xanthan gum, XG; polyacrylamide, PAM; sodium carboxymethyl cell…
View article: Effectiveness and impact of 7 and 13-valent pneumococcal conjugate vaccines in Chinese children: A systematic review and meta-analysis
Effectiveness and impact of 7 and 13-valent pneumococcal conjugate vaccines in Chinese children: A systematic review and meta-analysis Open
Pneumococcal conjugate vaccines (PCVs) are highly effective against pneumococcal diseases, yet coverage in China remains low. We conducted a systematic review of observational studies published between 2006 and 2024 in mainland China, Hong…
View article: Study on the Fire Temperature Pattern of Tunnels with Beams Under the Longitudinal Smoke Exhaust Mode
Study on the Fire Temperature Pattern of Tunnels with Beams Under the Longitudinal Smoke Exhaust Mode Open
Previous studies on tunnel fires have primarily focused on tunnels with flat ceilings and lacked studies on tunnels with beams. The present study is predicated on a reduced-scale tunnel model with a beam structure. Through meticulous analy…
View article: Probabilistic Analysis of Shield Tunnel Responses to Surface Surcharge Considering Subgrade Nonlinearity and Variability
Probabilistic Analysis of Shield Tunnel Responses to Surface Surcharge Considering Subgrade Nonlinearity and Variability Open
Accidental surface surcharge will generate additional load in the stratum, which then leads to unfavorable impacts on the underlying shield tunnel. This paper proposes a probabilistic analysis method to address this problem. In this framew…
View article: Numerical Study on Smoke Characteristics in Ultra-Long Tunnels with Multi-Train Fire Scenarios
Numerical Study on Smoke Characteristics in Ultra-Long Tunnels with Multi-Train Fire Scenarios Open
Metropolitan city express line tunnels are fully enclosed and often span long distances between stations, allowing multiple trains within a single interval. Traditional segmented ventilation ensures only one train per section, but ultra-lo…
View article: Fire Resistance and Mechanical Properties of Wooden Dou-Gong Brackets in Chinese Traditional Architecture Exposed to Different Fire Load Levels
Fire Resistance and Mechanical Properties of Wooden Dou-Gong Brackets in Chinese Traditional Architecture Exposed to Different Fire Load Levels Open
Dou-Gong brackets, the distinctive structural element in ancient Chinese architecture, fulfill critical roles in load transfer, span reduction, and decoration, making its preservation vital for safeguarding wooden heritage buildings. This …
View article: Study of the Effect of Regulating Alloying Elements and Optimizing Heat Treatment Processes on the Microstructure Properties of 20MnCr5 Steel Gears
Study of the Effect of Regulating Alloying Elements and Optimizing Heat Treatment Processes on the Microstructure Properties of 20MnCr5 Steel Gears Open
To optimize heat treatment of gears for high-end equipment and enhance their fatigue resistance, this paper studied the effects of Al, Mn and Cr content on surface microstructure, i.e., martensite, retained austenite, grain size, hardened …
View article: Experimental Study on Temperature Distribution Characteristics Under Coordinated Ventilation in Underground Interconnected Tunnels
Experimental Study on Temperature Distribution Characteristics Under Coordinated Ventilation in Underground Interconnected Tunnels Open
Underground interconnected tunnels typically have a large curvature and multiple branching structures, which pose a higher fire risk than traditional single-tube tunnels. In this paper, experiments were performed on a reduced-scale tunnel …
View article: Dynamic modeling and analysis of local defect system of rolling bearing outer ring
Dynamic modeling and analysis of local defect system of rolling bearing outer ring Open
Rolling bearings are of fundamental importance in rotating machinery. Outer - ring spalling, in particular, stands as a commonly encountered and quintessential defect. The dynamic model of rolling bearings enables an in-depth analysis of t…
View article: Study on Fire Temperature Field in Small-Section Steel-Shell Concrete Immersed Tube Tunnel Structure Based on CFD-FEM Method
Study on Fire Temperature Field in Small-Section Steel-Shell Concrete Immersed Tube Tunnel Structure Based on CFD-FEM Method Open
Small-section steel-shell concrete immersed tube tunnels are intended for minibuses and have a low fire heat release rate. Standard fire rise curves do not apply to such tunnels. In this study, a coupled method of computational fluid dynam…
View article: Measures of Type-2 Fuzzy Numbers: Balancing Fast and Slow Thinking in Decision Analysis
Measures of Type-2 Fuzzy Numbers: Balancing Fast and Slow Thinking in Decision Analysis Open
View article: Study on smoke spreading behavior under multi-point centralized smoke extraction in tunnel fires
Study on smoke spreading behavior under multi-point centralized smoke extraction in tunnel fires Open
In this work, the effect of various exhaust parameters on the smoke propagation laws under the multi-point centralized exhaust mode are investigated through numerical simulations. The research variables include heat release rate (HRR), exh…
View article: Asphyxiation effect analysis in confined space of B-type oil pool fire under pressure changes of nitrogen extinguishing system
Asphyxiation effect analysis in confined space of B-type oil pool fire under pressure changes of nitrogen extinguishing system Open
Nitrogen fire extinguishing system has a significant development space in the modern fire extinguishing because of its environmental protection, energy saving and high stability. To further broaden the application field of nitrogen fire ex…
View article: Synthesis of short-chain fluorocarbon surfactant: Enhancing surface and foam performance through hydrocarbon surfactants compounding
Synthesis of short-chain fluorocarbon surfactant: Enhancing surface and foam performance through hydrocarbon surfactants compounding Open
The research of short-chain fluorocarbon surfactants is crucial in effectively and environmentally extinguishing petrochemical fires. In this study, a short-chain fluorocarbon surfactant named 2H,2H-perfluorooctanoic acid sodium salt (PFH-…
View article: Study of air supplement velocity by thermal stack effect and critical velocity under longitudinal ventilation in the uniclinal V-shaped tunnel
Study of air supplement velocity by thermal stack effect and critical velocity under longitudinal ventilation in the uniclinal V-shaped tunnel Open
This research focuses on the specific uniclinal V-shaped tunnel during a fire, studying the air supplement triggered by the thermal stack effect and further examining the control mechanism of upstream smoke. It revealed how the air supplem…
View article: Fire extinction behavior of fly ash with different gas driving pressures on metal magnesium fires based on pneumatic conveying equipment
Fire extinction behavior of fly ash with different gas driving pressures on metal magnesium fires based on pneumatic conveying equipment Open
Metal fires are difficult to extinguish with traditional extinguishing agents, while special fire-extinguishing agents are difficult to obtain. Thus, the possibility of using fly ash to extinguish metal fires was explored, and the effects …
View article: An Experimental Study on the Fire Temperature Characteristic of Commuter Express Carriages with Multiple Side Doors in Tunnel of Urban Rail Transit
An Experimental Study on the Fire Temperature Characteristic of Commuter Express Carriages with Multiple Side Doors in Tunnel of Urban Rail Transit Open
View article: Experimental Study on the Impact of Blockage Ratio on Smoke Propagation in Underground Interconnected Tunnel
Experimental Study on the Impact of Blockage Ratio on Smoke Propagation in Underground Interconnected Tunnel Open
View article: Study on the Influence of Setting Parameters of Tunnel Centralized Smoke Extraction System on Fire Smoke Flow and Temperature Decay
Study on the Influence of Setting Parameters of Tunnel Centralized Smoke Extraction System on Fire Smoke Flow and Temperature Decay Open
The centralized smoke exhaust system of shield tunnel is an important determinant for tunnel fire safety, and the use of different design parameters of the tunnel smoke exhaust system will affect the smoke exhaust effect in the tunnel, and…
View article: Study of the Influence of the Distance between Smoke Outlets and Fire Source on Smoke Flow Characteristics in Tunnel Fires
Study of the Influence of the Distance between Smoke Outlets and Fire Source on Smoke Flow Characteristics in Tunnel Fires Open
This paper explores the smoke flow characteristics in tunnel fires, giving a particular emphasis on the effects of different distances between the smoke outlets and the fire source.It examines the smoke behavior under different conditions,…
View article: Fire Hazard Analysis on Different Fire Source Locations in Multi-Segment Converging Tunnel with Structural Beams
Fire Hazard Analysis on Different Fire Source Locations in Multi-Segment Converging Tunnel with Structural Beams Open
To investigate the fire risk in a complex tunnel with varying cross-sections, sloped structures, and dense upper cover beams, this study considered four fire source positions: the immersed tube section, confluence section, highway auxiliar…
View article: Construction of transparent PAM/PVA interpenetrating network hydrogel for designing fireproof glass with superior heat insulation and aging resistance
Construction of transparent PAM/PVA interpenetrating network hydrogel for designing fireproof glass with superior heat insulation and aging resistance Open
The decorative and fireproof performance degradation of the grouting fireproof glass exposed to UV irradiation limits its application in the fire protection of buildings. To solve this issue, a transparent polyacrylamide/polyvinyl alcohol …
View article: Comparative Study of the Suppression Behavior and Fire-Extinguishing Mechanism of Compressed-Gas Aqueous Film-Forming Foam in Diesel Pool Fires
Comparative Study of the Suppression Behavior and Fire-Extinguishing Mechanism of Compressed-Gas Aqueous Film-Forming Foam in Diesel Pool Fires Open
A compressed-gas fire extinguishing experiment was carried out to analyze the impact of gas-liquid flow ratio, liquid flow rate and driving pressure on the fire suppression efficiency of aqueous film-forming foam (AFFF) in a diesel pool fi…
View article: Facade flame height ejected from window of a compartment fire under a single sidewall constraint boundary condition
Facade flame height ejected from window of a compartment fire under a single sidewall constraint boundary condition Open
Under the boundary condition of single sidewall constraint, this study investigates the relationship between the window dimension, heat release rate, and sidewall distance and the development law of the mean flame height. Based on the char…
View article: Study on the Effect of Blockage Ratio on Maximum Smoke Temperature Rise in the Underground Interconnected Tunnel
Study on the Effect of Blockage Ratio on Maximum Smoke Temperature Rise in the Underground Interconnected Tunnel Open
The model-scale tunnel is used in this investigation to analyze the maximum smoke temperature rise of the interconnected tunnel for various longitudinal ventilation velocities, blockage ratios, and heat release rates where the fire is at t…
View article: Processing of Pinus sylvestris into remarkable heat- insulating, thermally stable, and flame-retarded materials by combining the flame retardant impregnation and densification treatment
Processing of Pinus sylvestris into remarkable heat- insulating, thermally stable, and flame-retarded materials by combining the flame retardant impregnation and densification treatment Open
Flame retardant impregnation and densification treatment as wood modification techniques both can improve the fire safety of the wood. Here, these two techniques are applied to prepare flame-retarded wood, aiming at further fire hazard red…
View article: Study of the Heat Exhaust Coefficient of Lateral Smoke Exhaust in Tunnel Fires: The Effect of Tunnel Width and Transverse Position of the Fire Source
Study of the Heat Exhaust Coefficient of Lateral Smoke Exhaust in Tunnel Fires: The Effect of Tunnel Width and Transverse Position of the Fire Source Open
The tunnel width and the transverse fire’s position both impact the heat exhaust coefficient, which is a critical component of the lateral smoke exhaust in tunnel fires. In this research, the tunnel width and the transverse location of the…
View article: Identifying fire safety in hospitals: Evidence from Changsha, China
Identifying fire safety in hospitals: Evidence from Changsha, China Open
Since the outbreak of the COVID-19 pandemic, fires occurred frequently in hospitals managing COVID-19, and caused over 279 deaths. Fire safety in hospitals should be identified clearly and taken seriously. Fire probability and fire service…
View article: Analyzing the reflash feature of large-area liquid fire in channel-like structures: A case study
Analyzing the reflash feature of large-area liquid fire in channel-like structures: A case study Open
View article: Experimental study on the effectiveness and safety of cement powder on extinguishing metal magnesium fires based on pneumatic conveying technology
Experimental study on the effectiveness and safety of cement powder on extinguishing metal magnesium fires based on pneumatic conveying technology Open