A5102910608- Concrete and Cement Materials Research
- Concrete Corrosion and Durability
- Concrete Properties and Behavior
- Innovative concrete reinforcement materials
- Geotechnical Engineering and Underground Structures
- Structural Behavior of Reinforced Concrete
- Drilling and Well Engineering
- Structural Load-Bearing Analysis
- Building materials and conservation
- Structural Response to Dynamic Loads
- High-Velocity Impact and Material Behavior
- Landslides and related hazards
- Corrosion Behavior and Inhibition
- Structural Engineering and Vibration Analysis
- Geomechanics and Mining Engineering
- Fire effects on concrete materials
- Structural Integrity and Reliability Analysis
- Advanced Surface Polishing Techniques
- SARS-CoV-2 detection and testing
- Biosensors and Analytical Detection
- Membrane Separation and Gas Transport
- CO2 Sequestration and Geologic Interactions
- Hydraulic flow and structures
- Vibration Control and Rheological Fluids
- Membrane Separation Technologies
Anhui University of Traditional Chinese Medicine
2024
Wenzhou University of Technology
2023
Wenzhou University
2023
Chengdu University of Technology
2022-2023
Sichuan Institute of Building Research
2021-2022
Sichuan College of Architectural Technology
2021-2022
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2022
Tianjin University of Technology
2017
PLA Air Force Aviation University
2016
Guilin University of Electronic Technology
2015
Sixty-one SARS coronavirus genomic sequences derived from the early, middle, and late phases of severe acute respiratory syndrome (SARS) epidemic were analyzed together with two viral palm civets. Genotypes characteristic each phase discovered, earliest genotypes similar to animal SARS-like coronaviruses. Major deletions observed in Orf8 region genome, both at start end epidemic. The neutral mutation rate genome was constant but amino acid substitution coding slowed during course spike...
Nano-C-S-H seed crystal, as an early strength agent for cement-based materials, has great application prospects. In order to investigate the effect of nano-C-S-H crystal on early-age hydration process Portland cement, in this article, low-field nuclear magnetic resonance (NMR) technology with 1H a probe was used situ monitor microstructure evolution cement paste during process. Other micro-test methods including mercury intrusion porosimetry (MIP), scanning electron microscope (SEM), and...
During geothermal energy development, the bottom high-temperature fluid continuously exchanges heat with upper low-temperature wellbore and stratum during its rising process. Thermal insulation cement (TIC) can increase outlet temperature, thus effectively reducing loss of improving efficiency. In this study, vitrified microbubbles (VMB) were screened out by conducting an orthogonal test compressive strength (CS) thermal conductivity (TC) on three inorganic materials (VMB, expanded perlite...
Shear connectors have been widely used in bridge and steel engineering to transfer the dynamic load effect between neighbour elements. The shear are exposed moist air, corrosion is unavoidable. An experimental investigation was conducted on behaviour of corroded stud with growing strain rates study effects rate capacity. Four series specimens different were tested. electronic accelerating method fabricate studs target rates. loaded five loading speeds investigate fractured surfaces show that...
An explosion is defined as a large-scale, rapid and sudden release of energy. Explosions, such bomb within or immediately nearby building gas-chemical explosion, can cause catastrophic damage on the building's frames, collapsing walls, blowing out large expanses windows, shutting down critical life-safety systems. In fact, an may result in dynamic loads, greater than original design many structures. Blast phenomenon blast efforts have been made during past several decades to develop methods...
Abstract Nano calcium silicate hydrate (nano-C–S–H) has become a novel additive for advanced cement-based materials. In this paper, the effect of nano-C–S–H on early-age performance cement paste been studied, and some micro-characterization methods were used to measure microstructure nano-C–S–H-modified material. The results showed that initial fluidity was improved after addition nano-C–S–H, but gradual loss increased with dosage nano-C–S–H. autogenous shrinkage can be reduced by up 42%...
Conductive silicone keypads are widely applied in many electrical products. However, they still followed the plug-in mounting design up to now. In this study, accordance with development direction of Surface Mounted Technology (SMT) microelectronics packaging components, a SMT keypad quad flat no lead (QFN) form is proposed. First, modeled by using finite element analysis software, and then relationship between pressing force key displacement discussed. Second, mechanical stress distribution...
An extensive numerical study was carried out due to the concern that head-sectional damage caused by corrosion poses a threat tensile performance of headed stud connectors. Three-dimensional finite element models pull-out tests were established, with both material and geometric nonlinearities being considered. In particular, concrete weak region bleeding simulated. The simulation method verified results on two connectors different degrees. Tensile shear various shaft diameters (ds = 10 25...
ABSTRACT Although coronavirus disease 2019 (COVID-19) has not been considered a public health emergency of international concern since last year, intermittent regional impacts still persist, and accurate testing remains crucial. Ribonuclease P protein subunit P30 ( RPP30 ) RNA, known for its broad stable expression in tissue cells, was used to evaluate samples from 10 hospitals with over 3,000 negative nucleic acid tests. The results revealed that the overall pass rate collected consistently...
According the experience of gas pipeline project in Middle-Asia district, writer analyzes and concludes design feature for route process scheme district. For requirement code SNIP, ASME Chinese specification, difference on draws conclusion. The pipe grade, parameter, wall thickness selection station are detailed described article, which can expand thought provide reference similar project.
A trenchless pipeline HDD crossing is a key project of oil and gas construction. Although technology relatively mature, with the requirements larger diameter, longer span much more complex geological conditions, lot problems have emerged in design construction process. Thus, failure cases are markedly increased will eventually result great loss. Currently, long distance, large diameter conditions has many issues. This article analyzes status existing China. It discusses ideas development...
Flight or maneuvering at high angle of attack is one the most important parts for modern fighters.When within usual range, aerodynamic characteristics have a linear relationship with dynamic aircraft.With increase attack, airflow separation developed and nonlinear traits force moment occur.Vortex can be generated in front nose aircraft leading edge wing.Furthermore, change break down vortices are main cause attack.Study on structure flow field great significance to understand fighter's...
Collapses in drystone prehistoric Scottish broch towers probably started from localised failures at the supports of roofs or decks, settlements, ill-conceived modifications gradual decay producing long-term accumulation debris. Another source instability is their precarious state during excavations. Some these effects have been simulated as excessive lateral thrust settlement and are studied here through experimental analysis on wallettes 1/15 scale, expanding earlier insight complete models...
Explosions, such as a bomb explosion and gas explosion, can cause catastrophic damage on the buildings. In fact, an may result in large dynamic loads, greater than original design of many structures. Two RC specimens were tested under explosive loading. The first specimen was used control for experiment, while other retrofitted with 6 near surface mounted (NSM) Carbon FRP strips each face. Both subjected to 60g Pentolite at stand off distances 0.6m. aim this experiment observe compare...
To offer or predict the shear strength of stabilized expansive soils after cyclic wetting and drying for slope analysis, paper carried out direct test on different times drying. The results show: first 3-5 will cause decreased sharply, about 7-9 cycle, trend to a stable value, which is 40-60% normal before cycles. Logarithm model can well fitted variation cyclic, so index be predicted by using models was established according results.
To offer or predict the shear strength of compacted lime stabilized expansive soils after long-term immersion for slope analysis, paper carried out direct test on different time. The results show that has significant impact soils, reduced sharply soaking, but tends to a stable value about 60%~70% normal while soaking is longer than 50 days. Logarithm model can well fitted sketch φ , c and times within days, which may be used quickly.