A5101717558- Fire effects on concrete materials
- Structural Load-Bearing Analysis
- Structural Behavior of Reinforced Concrete
- Welding Techniques and Residual Stresses
- Structural Response to Dynamic Loads
- Transportation Planning and Optimization
- Advanced Welding Techniques Analysis
- Fatigue and fracture mechanics
- Hydrogen embrittlement and corrosion behaviors in metals
- Evacuation and Crowd Dynamics
- Advanced Cellulose Research Studies
- Microstructure and Mechanical Properties of Steels
- Traffic Prediction and Management Techniques
- Higher Education and Teaching Methods
- Non-Destructive Testing Techniques
- Sepsis Diagnosis and Treatment
- Smart Parking Systems Research
- Innovations in Educational Methods
- Fire Detection and Safety Systems
- Elasticity and Material Modeling
- Educational Technology and Assessment
- Engineering Structural Analysis Methods
- Thermal Radiation and Cooling Technologies
- School Choice and Performance
- Ocular and Laser Science Research
Dalian Minzu University
2006-2024
Qingdao Agricultural University
2021
Xuzhou Medical College
2020
Lanzhou University of Technology
2017-2018
E.O. Paton Electric Welding Institute
2015
The Welding Institute
2015
ITRI International
2015
Hunan University
2014
University of Nottingham
2011
Fudan University
2008
Abstract Background Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has been spreading globally. The number of deaths increased with the increase in infected patients. We aimed to develop a clinical model predict outcome COVID-19 patients early. Methods Epidemiological, clinical, and first laboratory findings after admission 183 (115 survivors 68 nonsurvivors) from Sino-French New City Branch Tongji Hospital were used...
The primary objective of this study was to evaluate the associations between centre/country-based factors and two important process outcome indicators in patients with hospital-acquired bloodstream infections (HABSI).
It is of great significance to investigate the dynamic response pipes under blasting loads for operation, assessment, and repair pipes. However, there are few studies available on buckling multiple explosion loads. In present study, pipe-soil coupling 3-D models established X70 steel pipe with bolted flange connection (BFC) two-charge (Charge A lied ground surface Charge B in soil). The main influencing factors also discussed, including mode, internal pressure, interval time, mass ratio...
In this work, micrometer-thick organic-inorganic hybrid films are fabricated. A photothermal experiment is designed and conducted to characterize the thermophysical properties of films, as well thermal contact resistance between film substrate. The molecular cagelike or nanopores, which can strongly enhance phonon scattering, considered be formed inside during fabrication. first order estimation volume fraction cavities its effect on obtained. zirconium(IV) propoxide (ZPO) concentration also...
This paper is an attempt to study the fire performance of concrete filled steel tube reinforced (CFSTRC) columns exposed condition. Tests were carried out on CFSTRC subjected ISO-834 standard fire. Details temperature distribution, resistance, deformations and failure mechanism are presented in paper. Based observation analysis test results, characteristics a investigated. It was found that outside CFST can act as natural insulation inner concrete; there no local buckling due presence both...
The temperature fields within twelve concrete filled steel tubular columns with or without fire protection when exposed to the ISO-834 standard curve (ISO-834, 1975) have been experimentally investigated and results are presented in this paper. main parameters varied tests are: (1)Sectional types, square circular; (2) Sectional dimensions from 299mm 800mm; (3) Thickness of coat 14mm 35mm. A derivation has given for surface concrete-filled columns. Nonlinear finite element analysis carried...
Softwood kraft lignin is a renewable type of woody material that can be converted to value-added products, for example, as paper strength additive in the industry. In this study, monomers methacryloxyethyltrimethyl ammonium chloride (DMC), acrylic acid (AA), and acrylamide (AM) were grafted on softwood (SKL) prepare three different SKL copolymers. Fourier-transform infrared, proton nuclear magnetic resonance, charge density, elemental, molecular weight analyses confirmed successfully onto...
The characteristics of zinc behavior that the layer is vaporized and ionized during laser welding galvanized steel are closely related to stability molten pool, weld keyhole formation, easily leading defects such as pores, splashes, cave, incomplete fusion. In this paper, an experimental platform was built based on a multichannel spectrum signal acquisition study spectral zinc, plasma temperature, electron density, bremsstrahlung absorption in with copper addition. results show that, due...
Finite element (FE) simulation of welding processes enables the prediction component distortions which significantly reduces need for physical trials. This facilitates reduction in lead time and costs associated with process planning. In this paper, FE modelling tungsten inert gas is performed using SYSWELD a butt joint between 2 mm thick stainless steel 304 (SS304) sheets. A three-dimensional double ellipsoid (Goldak) heat source used to model flow during welding. The definition as...
To improve the manufacturing quality of welded structures, to prevent failures at weld joints and predict their lifetime, measurements residual stresses generated by welding in structures are extremely useful. The may reduce component life due phenomena that occur low applied such as brittle fracture, fatigue stress corrosion cracking. Welded thin Ti–6Al–4V panel components commonly found aero-engine assemblies integrity reliability critical. In this work, distributions a T-joint were...
To reveal the temperature characteristics and mechanical properties of frame structures with concrete filled steel tube reinforced (CFSTRC) columns under fire, fire resistance four planar frames consisting CFSTRC (RC) beams subjected to ISO-834 standard was tested in this study. The test parameters included column load ratio, beam beam-to-column linear stiffness ratio. In test, temperatures column, beam, slab cross-sections joint nonjoint zones were measured, resistance, deformation curves,...
Background.Quantitative radiomic features of medical images could provide clinical significance in assisting decision-making, but the existing feature selection and modeling methods are usually parameter-dependent. We aim to develop validate a generalized method applicable variety outcomes.Methods materials.A methodology for ('GRFM' short), including two-step logistic regression, was proposed studying outcomes correlations. The consists Pearson correlation analysis followed by sequential...
A-TIG welding is a new variant of high-efficiency TIG weld technology, the penetration can be improved by using surface activating fluxes. In present work, 12 mm thick stainless steel plates were welded method utilizing self-developed oxide-based composite flux. Results showed that for plates, joint full and one-side with back formation good appearance could achieved welding. Furthermore, compared traditional welding, microstructure was finer, directivity dendritic crystals near bond line...
Cyclobalanopsis glauca (Thunb.) Oerst. is one of the most widely distributed species evergreen broad-leaved tree in subtropical areas China. It also grown Korea, Japan, and India. Because its beautiful shape, C. commonly used for greening gardens walkways. In July 2018, leaf spots on were observed Zhejiang province (Lishui, N: 28°26' 6.75";E: 119°54'11.22), About 70% trees found to be diseased, with approximately 50% leaves showing symptoms. The symptoms initially appeared as small...
The temperature field analysis method of steel tubes reinforced columns under fire by finite element software ABAQUS is proposed in this paper. theoretical validated tests, and the calculated results agree well with those tests. On basis that, influencing laws section perimeter; reinforcement ratio sectional core area on are discussed. It has been found that effects size significant, but very little effect both tube center. These achievements make it possible to study further resistance...
Incidents including damage, failure, and collapse of building structures frequently occur under the combined influence multiple disasters such as fires impacts. Research on ensuring structural integrity buildings throughout their service life, particularly for newly constructed structures, is currently inadequate. To elucidate mechanical behavior steel tube-reinforced concrete (ST-RC) columns effects fire lateral impacts, a comprehensive finite element model was developed. This integrates...