中南大学学报·社会科学版杂志 CSSCI南大期刊 北大期刊

Fuel combustion synthesis and upconversion properties of Yb3+ and Er3+ dual-doped ZrO2 nanocrystals

作者：刘小林; 张宁; 李丹; 李志成; 游维雄; 张骞; 夏李斌; 杨斌 刊期：2017年第10期

Ytterbia and erbia dual-doped zirconia (ZrO2: Yb3+, Er3+) nanophosphors were successfully synthesized by high-temperature fuel combustion at 1000 °C for 2 h. The effects of dopant concentration on the structure and upconversion properties were investigated by X-ray diffraction, transmission electron microscopy and ph...

Effect of Ti on microstructure and strengthening behavior in press hardening steels

作者：闻玉辉; 朱国明; 戴思雨; 康永林 刊期：2017年第10期

Effect of Ti addition on the microstructure and strengthening behavior in press hardening steels (PHS) was analyzed by optical metallography (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results show that the microstructure of PHS is martensite, and ...

Flatness predictive model based on T-S cloud reasoning network implemented by DSP

作者：张秀玲; 高武杨; 来永进; 程艳涛 刊期：2017年第10期

The accuracy of present flatness predictive method is limited and it just belongs to software simulation. In order to improve it, a novel flatness predictive model via T-S cloud reasoning network implemented by digital signal processor (DSP) is proposed. First, the combination of genetic algorithm (GA) and simulated ...

Effect of zirconium on microstructures and mechanical properties of squeeze cast Al–5.0Cu–0.4Mn–0.1Ti–0.1RE alloy

作者：孟凡生; 张卫文; 胡愿; 张大童; 杨超 刊期：2017年第10期

Al–5.0Cu–0.4Mn alloys with different Zr additions have been prepared by direct squeeze casting. The effects of Zr on microstructures and mechanical properties of the as-cast and T6 heat-treated alloys were investigated by tensile test, optical microscope (OM), scanning electron microscope (SEM) and transmission ele...

Effect of cathode composition on microstructure and tribological properties of TiBN nanocomposite multilayer coating synthesized by plasma immersion ion implantation and deposition

作者：吕文泉; 曹永智; 王浪平; 王小峰; 顾至伟; 闫永达; 于福利 刊期：2017年第10期

Nanocomposite multilayer TiBN coatings were prepared on Si (100) and 9Cr18Mo substrates using TiBN composite cathode plasma immersion ion implantation and deposition technique (PIIID). Synthesis of TiBN composite cathodes was conducted by powder metallurgy technology and the content of hexagonal boron nitride (h-BN) ...

Effect of ultraviolet mutagenesis on heterotrophic strain mutation and bioleaching of low grade copper ore

作者：吴爱祥; 胡凯建; 王洪江; 张爱卿; 杨莹 刊期：2017年第10期

The effect of ultraviolet mutagenesis on a heterotrophic strain (Providencia JAT-1) mutation was studied and bioleaching of low grade copper ore with mutant bacteria was investigated. The results show that the activity of bacteria was improved after ultraviolet mutagenesis; the best irradiation time was 120 s. Compar...

Solvent extraction separate of zinc and cadmium from magnesium and calcium in sulfuric acid medium by mixing extractants

作者：李晓晖; 艾仙斌; 何力; 计少石; 胡淼; 丁建南; 李凤 刊期：2017年第10期

Synergistic extraction has been proven to enhance extractability and selectivity for the separation of cadmium and zinc from magnesium and calcium in the sulfuric acid medium with Mextral V10 and Mextral 622H (aromatic hydroxamic) mixtures diluted in DT100. Mixtures of Mextral V10 and 622H are highly selective for Zn...

Evaluation of granulability and absorbtivity of biomass in agglomeration mixture

作者：Hudák; Jozef; Lesko; Jaroslav; Semanová; Zuzana; Frohlichová; Mária; Findorák; Róbert; Legemza; Jaroslav 刊期：2017年第10期

The granulability and absorbtivity of sawdust and coke breeze were investigated. These properties are important within the preparation of agglomeration charge. They have a significant impact on plynodynamic batch conditions. Ability of materials to wet is a fundamental condition of granulability of materials. Wettabi...

Extracting reaction mechanism analysis of Zn and Si from zinc oxide ore by NaOH roasting method

作者：陈兵; 申晓毅; 顾惠敏; 邵鸿媚; 翟玉春; 马培华 刊期：2017年第10期

The orthogonal test was used to optimize the reaction conditions of roasting zinc oxide ore with NaOH aiming to comprehensively utilize zinc oxide ore. The optimized reaction conditions were molar ratio of NaOH to zinc oxide ore 6:1, roasting temperature 450 °C, holding time 150 min. The molar ratio of NaOH to zinc o...

Numerical study on polymer nanofibers with electrically charged jet of viscoelastic fluid in electrospinning process

作者：P.; Valipour; H.; Zaersabet; M.; Hatami; Ali; Zolfagharian; S.E.; Ghasemi 刊期：2017年第10期

Electrospinning is a useful and efficient technique to produce polymeric nanofibers. Nanofibers of polymers are electrospun by creating an electrically charged jet of polymer solution. Numerical study on non-Newtonian and viscoelastic jets of polymer nanofibers in electrospinning process is presented in this work. In...

Theoretical and experimental investigation on vertical tank technology for sinter waste heat recovery

作者：冯军胜; 董辉; 高建业; 刘靖宇; 梁凯 刊期：2017年第10期

In the present work, the gas flow pressure drop and gas–solid heat transfer characteristics in sinter bed layer of vertical tank were studied experimentally on the basis of the homemade experimental setup. The gas flow pressure drop through the sinter bed layer was measured with different gas velocity and particle d...

Electronic structure and flotability of gold-bearing pyrite:A density functional theory study

作者：刘丹; 王伊杰; 先永骏; 文书明 刊期：2017年第10期

Performance analysis of high-static-low-dynamic stiffness vibration isolator with time-delayed displacement feedback

作者：程春; 李舜酩; 王勇; 江星星 刊期：2017年第10期

The displacement feedback with time delay considered is introduced in order to enhance the vibration isolation performance of a high-static-low-dynamic stiffness (HSLDS) vibration isolator. Such feedback is detailedly analyzed from the viewpoint of equivalent damping. Firstly, the primary resonance of the controlled ...

Rock fragmentation under different installation polar angles of TBM disc cutters

作者：程永亮; 钟掘; 梅勇兵; 夏毅敏 刊期：2017年第10期

The disc cutters of tunnel boring machine (TBM) are installed with different polar angles. This causes the cutting depth difference between adjacent disc cutters on the tunnel face. A rock-cutting model was established to study the rock fragmentation law between adjacent disc cutters with different polar angles based...

Phase type delay distribution with PU return and sensing error in CR networks

作者：Mohammad; Reza; Amini; Hemati; Farzad 刊期：2017年第10期

Many studies have been done in cognitive radios to maximize the network efficiency. There is always a trade-off between sensing and transmission time which has been addressed fully in the literature. There is also some missed idle times during the waiting phase when secondary user finds the channel busy. Therefore, t...