27 Result(s)
within
Yun-**g Zeng
Engineering
English
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Article
Effects of metallic derivatives in adsorbent derived from sewage sludge on adsorption of sulfur dioxide
The sewage sludge was used to produce adsorbent by controlling the pyrolytic and chemical conditions. Using the adsorbent derived from sewage sludge to adsorb the low concentration SO2 in fixed bed system, the ef...
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Article
Relationship between interfacial structure and property of steel-mushy Al-28Pb bonding pate
The interfacial properties of steel-mushy Al-28Pb bonding plate with different interfacial structures, and the influence of ratio of Fe-Al compound at the interface on interfacial shear strength were investiga...
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Article
Research of BJMOSFET frequency characteristics
The parasitic capacitance effect and its influence to the performance have been investigated in Bipolar Junction Metal-Oxide-Semiconductor Field-Effect Transistor (BJMOSFET). The frequency characteristic equiv...
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Article
Ratio of Fe-Al compound at interface of steel-backed Al-graphite semi-solid bonding plate
The ratio of Fe-Al compound at the bonding interface of solid steel plate to Al-7graphite slurry was used to characterize the interfacial structure of steel-Al-7graphite semi-solid bonding plate quantitatively...
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Article
Optimal interval of tunnel with small spacing considering visco-elastic plasticity
Based on different surrounding rock classifications, the numerical simulation of visco-elasto-plastic surrounding rock was studied for three roadway tunnels with small spacing, especially analyzing the visco-e...
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Article
Influence factors analysis of removing heavy metals from multiple metal-contaminated soils with different extractants
Some key factors on the heavy metals removal efficiencies were studied when soil washing technology was used in the remediation of soils contaminated by multiple heavy metals. The results show that the dissolu...
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Article
Speciation of chromium in soil inoculated with Cr(VI)-reducing strain, Bacillus sp. XW-4
Cr(VI)-amended soil was inoculated with Cr(VI)-reducing strain, Bacillus sp. XW-4 and incubated at 28 °C in an incubator. Cr(VI) reduction, available Cr and Cr fraction in soils were studied. The results show tha...
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Article
Exploring harmonious development between urbanization and eco-environment based on climate analysis—A study in Changsha, China
The process of urbanization affects the urban warming. The change of urban warming was investigated by several urbanization factors in Changsha, China. The data of surface temperature (minimum, maximum and mea...
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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 ...
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Article
High-performance porous carbon for supercapacitors prepared by one-step pyrolysis of PF/gelatin blends
A high-performance porous carbon material for supercapacitor electrodes was prepared by using a polymer blend method. Phenol-formaldehyde resin and gelatin were used as carbon precursor polymer and pore former...
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Article
Formation of active radicals and mechanism of photocatalytic degradation of phenol process using eosin sensitized TiO2 under visible light irradiation
The role of oxygen and the generation of active radicals in the photocatalitic degradation of phenol were investigated using the eosin sensitized TiO2 as photocatalyst under visible light irradiation. Diffuse ref...
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Article
Competitive adsorption of Cu(II) and Pb(II) ions from aqueous solutions by Ca-alginate immobilized activated carbon and Saccharomyces cerevisiae
To establish a theoretical foundation for simultaneous removal of multi-heavy metals, the adsorption of Cu(II) and Pb(II) ions from their single and binary systems by Ca-alginate immobilized activated carbon and
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Article
Kinetics study of leaching arsenic from Ni-Mo ore roasting in dust mixture of hydrochloric and sulfuric acids
The kinetics of leaching arsenic from Ni-Mo ore roasting dust was investigated. The effects including leaching temperature, particle size of the smelter dust, stirring speed, the coefficient β (the molar ratio of...
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Article
Theoretical and experimental analyses of casing collapsing strength under non-uniform loading
Failure data from oilfield showed that casings which were designed according to API standards were deformed and collapsed in salt formations. The main reason for decrease in strength may be caused by non-unifo...
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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...
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Chapter and Conference Paper
A Brief Discussion on the Method and Key Technology of Using ZY-3
Digital orthography (DOM) is an important 4D map** product. In this paper, according to the characteristics of ZY-3 satellite image, the technical process of making orthophoto image based on ZY-3 satellite i...
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Article
Seepage characteristics of a fractured silty mudstone under different confining pressures and temperatures
To investigate the influence of confining pressures and temperatures on the seepage characteristics of fractured rocks, seepage tests were conducted on a fractured silty mudstone using a self-developed experim...
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Article
Dynamic modelling and properties analysis of 3RSR parallel mechanism considering spherical joint clearance and wear
The collision and wear caused by inevitable clearance in kinematic pair have an effect on the dynamic characteristics of the mechanism. Therefore, we established the dynamic model of a 3RSR (R is the revolute ...
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Article
Experimental and numerical simulation of loading rate effects on failure and strain energy characteristics of coal-rock composite samples
The deformation and failure of coal and rock is energy-driving results according to thermodynamics. It is important to study the strain energy characteristics of coal-rock composite samples to better understan...
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Chapter and Conference Paper
Characteristics and Development Work Emphasis of Thin-Layer Low-Resistivity Subtle Reservoir – A Case Study of DK Oilfield
Thin-layer low-resistivity subtle reservoir is a kind of complex reservoir, accounting for large proportion in the currently developed oilfields. Predictably, this kind of reservoir will become more important ...
