49 Result(s)
within
Article
**ang-Yun Xu
Engineering
-
Article
Treatment of bauxite residue dust pollution by improving structural stability via application of synthetic and natural polymers
The residue drying area (RDA) is the major source of fugitive red sand (RS) dust emissions in the bauxite mining industry and causes serious environmental and safety detriments. Polymer stabilizer (PS) is one ...
-
Article
Surface property variations in flotation performance of calcite particles under different grinding patterns
Based on the working principles of particle bed comminution, particles produced by high-pressure grinding rolls (HPGR) have surface properties different from particles produced by other grinding patterns, whic...
-
Article
Analyses on uniformity of particles under HPGR finished grinding system
In order to deal with the disadvantages of excessive grinding and non-uniformity in finished particle under high-pressure grinding rolls (HPGR) finished grinding system, four aspects were investigated, includi...
-
Article
Effect of Mg addition on formation of intragranular acicular ferrite in heat-affected zone of steel plate after high-heat-input welding
The effects of Mg content, inclusion size, and austenite grain size on the intragranular acicular ferrite (IAF) nucleation in heat-affected zone of steel plate after high-heat-input welding of 400 kJ/cm were i...
-
Article
Effect of phosphorus and heat treatment on microstructure of Al-25%Si alloy
It is known that phosphorus can refine the primary silicon and heat treatment can spheroidize the eutectic silicon. This paper presents an optimal combination of heat treatment processes and P refinement on hy...
-
Article
Removal of Pb(Π) from aqueous solution by magnetic humic acid/chitosan composites
A novel adsorbent named magnetic humic acid/chitosan composite (M-HA/Cs) was synthesized by decorating humic acid/chitosan composites with Fe3O4 nanoparticles. The adsorption capacity of M-HA/Cs was 1.5 times tha...
-
Article
An investigation of cam-roller mechanism applied in sphere cam engine
As an alternative power source for hybrid electrical vehicle(HEV), electric generating system(EGS) driven by sphere cam engine(SCE) is said to own higher power density and integration. In this work, the struct...
-
Article
Design and dynamic characteristic prediction of air-powered twin-rotor piston engine
A novel air-powered twin-rotor piston engine (ATPE) utilizing a differential velocity driving mechanism to achieve a high output torque was proposed. The ATPE had eight separated rotary cylinders which can dyn...
-
Article
Improved social force model based on exit selection for microscopic pedestrian simulation in subway station
An improved social force model based on exit selection is proposed to simulate pedestrians’ microscopic behaviors in subway station. The modification lies in considering three factors of spatial distance, occu...
-
Article
Fundamental study on iron ore sintering new process of flue gas recirculation together with using biochar as fuel
It is of great significance for cleaner production to substitute bio-energy for fossil fuels in iron ore sintering. However, with the replacement ratio increasing, the consistency of heat front and flame front...
-
Article
Influence of seismic input on response of Baihetan arch dam
The dynamic responses of the arch dam including dam-foundation-storage capacity of water system, using two different earthquake input models, i.e. viscous-spring artificial boundary (AB) condition and massless...
-
Article
A study on the contraction joint element and damage constitutive model for concrete arch dams
A new contraction joint element model for the interface in different meshes between the arch dam sections is constructed. The study on the elastic-plastic damage constitutive model for concrete, which is appli...
-
Article
Study on spline wavelet finite-element method in multi-scale analysis for foundation
A new finite element method (FEM) of B-spline wavelet on the interval (BSWI) is proposed. Through analyzing the scaling functions of BSWI in one dimension, the basic formula for 2D FEM of BSWI is deduced. The ...
-
Article
Swelling properties and molecular simulation of PNIPA porous hydrogels
A series of porous intelligent hydrogels, which exhibited appropriate lower critical solution temperature (LCST) and fast response behavior, were synthesized by radiation method. The structure and surface morp...
-
Article
Fast Face Detection Algorithm Based on Improved Skin-Color Model
Automatic face recognition is one of the most challenging tasks in fields of computer vision and pattern recognition, and face detection is the first critical step in full automatic face recognition system. Th...
-
Article
Impacts of land-use change on ecosystem service value in Changsha, China
Changsha, a typical city in central China, was selected as the study area to assess the variations of ecosystem service value on the basis of land-use change. The analysis not only included the whole city but ...
-
Article
Catalytic graphitization of Mo-B-doped polyacrylonitrile (PAN)-based carbon fibers
A novel carbon fiber pretreatment was proposed. Polyacrylonitrile (PAN)-based carbon fibers were first anodized in H3PO4 electrolyte to achieve an active surface, and then coated with Mo-B catalysts by immersed t...
-
Article
CCT curves of low-carbon Mn-Si steels and development of water-cooled bainitic steels
CCT curves of Mn-Si steels with different manganese contents or carbon contents were determined. The results show that the transformation range of bainite can be separated from that of ferrite when the mangane...
-
Article
Flow Characteristics in Energy Dissipation Units of Labyrinth Path in the Drip Irrigation Emitters with DPIV Technology
The energy dissipation mechanism and anti-clogging properties of drip irrigation emitters are closely related to flow characteristics of the fluid in its flow paths, and flow field tests using modern flow visu...
-
Article
Optimal training design and placement for MIMO orthogonal frequency division multiplexing channel estimation
This paper deals with optimal training design and placement over multiple orthogonal frequency division multiplexing (OFDM) symbols for the least squares (LS) channel estimation in multiple-input multipleoutpu...
