Gui-qing Zhang

article

Removal of impurities from scandium solutions by ion exchange

Zhen Peng, Qing-gang Li, Zhao-yang Li, Gui-qing Zhang, more

Journal of Central South University > 2018 > 25 > 12 > 2953-2961

A process of removing impurities, such as Fe, Zr, Ti, Al, Si, from scandium solution by ion exchange was proposed. Various resins’ selectivity was studied in scandium chloride solution. The results indicated that D851 resin had high selectivity of Sc at low acidity, and high selectivity of Zr at high acidity; D370 resin had high selectivity of Fe and Si in high acidity. A new technical process of...

article

An improved fitness evaluation mechanism with noise in prisoner’s dilemma game

Gui-Qing Zhang, Tao-Ping Hu, Zi Yu

Applied Mathematics and Computation > 2016 > 276 > C > 31-36

The prisoner’s dilemma game is a simple model to understand the evolution of cooperation in complex systems. In this work, we introduce the element of noise to the payoffs of the spatial prisoner’s dilemma game and study its effects on the evolution of cooperations. A tunable parameter, termed as the noise strength (α), is introduced into the model to mimic the effects of noise in the individual fitness...

article

Properties and Data-driven Design of Perceptual Reasoning Method Based Linguistic Dynamic Systems

Cheng-Dong LI, Gui-Qing ZHANG, Hui-Dong WANG, Wei-Na REN

Acta Automatica Sinica > 2014 > 40 > 10 > 2221-2232

The linguistic dynamic systems (LDSs) based on type-1 fuzzy sets can provide a powerful tool for modeling, analysis, evaluation and control of complex systems. However, as pointed out in earlier studies, it is much more reasonable to take type-2 fuzzy sets to model the existing uncertainties of linguistic words. In this paper, the LDS based on type-2 fuzzy sets is studied, and its reasoning process...

article

Avalanche duration time in a simple heterogeneous Olami–Feder–Christensen model

Gui-Qing Zhang, Qiu-Ying Yang, Ai-Zhen Zhang

Applied Mathematics and Computation > 2014 > 242 > Complete > 346-352

A modified version of the Olami–Feder–Christensen model has been introduced to consider the difference between avalanche duration distribution. The duration time of our model well demonstrates the power-law behavior and finite size scaling. Relationship between earthquake duration time and average size has been discussed. It gives a power-law behavior and provides a new evidence of self-organized...

article

Precursor solution prepared by evaporation deamination complex method for solvent separation of Mo and W by H2O2-complexation

Wen-juan GUAN, Gui-qing ZHANG, Cong-jie GAO

Transactions of Nonferrous Metals Society of China > 2013 > 23 > 4 > 1139-1146

An novel method on preparation of precursor solution for solvent separation of molybdenum (Mo) and tungsten (W) by hydrogen peroxide (H ₂ O ₂ )-complexation from the ammonium tungstate solution containing high Mo was studied. The precursor solution was obtained via evaporation deamination and H ₂ O ₂ -complex transformation processes. Then it was extracted with a mixture...

article

Comprehensive identification of high-frequency and co-occurring Mafa-B, Mafa-DQB1, and Mafa-DRB alleles in cynomolgus macaques of Vietnamese origin

Fei Ling, Min Zhuo, Chao Ni, Gui-qing Zhang, more

Human Immunology > 2012 > 73 > 5 > 547-553

High-frequency alleles and/or co-occurring human leukocyte antigen (HLA) alleles across loci appear to be more important than individual alleles, because they might be markers of disease risk that have clinical value as biomarkers for targeted screening or the development of new therapies. To better elucidate the major histocompatibility complex background and to facilitate the experimental use of...

article

Leaching of nickel-molybdenum sulfide ore in membrane biological reactor

Jia-wu CHEN, Cong-jie GAO, Qi-xiu ZHANG, Lian-sheng XIAO, more

Transactions of Nonferrous Metals Society of China > 2011 > 21 > 6 > 1395-1401

The bioleaching of molybdenum from its sulfide ore using a Mo-resistant thermophilic bacterium sulfolobus metallics combined with a membrane biological reactor (MBR) was studied. The experimental results showed that the concentration of Mo can be controlled by filter of the membrane in MBR and the toxicity of Mo to microorganism is decreased in the process of bioleaching. It was also evidenced that...

article

Design of square-shaped heat flux cloaks and concentrators using method of coordinate transformation

Guan-xia Yu, Yang-fan Lin, Gui-qing Zhang, Zi Yu, more

Frontiers of Physics > 2011 > 6 > 1 > 70-73

A square-shaped heat flux cloak and a square-shaped heat flux concentrator have been designed theoretically according to the invariance symmetry of steady state thermal conductive equation. The direction of heat flux in these devices can be modulated as desired. Using the method of coordinate transformation, the inhomogeneous and anisotropic thermal conductivity in the transformation region have been...

article

Deep removal of copper from cobalt sulfate electrolyte by ion-exchange

Jun-jie WEN, Qi-xiu ZHANG, Gui-qing ZHANG, Zuo-ying CAO

Transactions of Nonferrous Metals Society of China > 2010 > 20 > 8 > 1534-1540

SP-C was applied for the removal of Cu ²⁺ from simulated cobalt sulfate electrolyte containing Co ²⁺ 50 g/L and Cu ²⁺ 0.5–2.0 g/L. Experimental conditions included pH of 2–4, temperature of 20–60 °C and contact time of 10–40 min. The investigation demonstrated that SP-C had recommendable efficiency in adsorbing Cu ²⁺ from the electrolyte with 25- to 100-fold of Co ...

chapter

Design and application of handheld auto-tuning pid instrument used in HVAC

Jian Liu, Wen-Jian Cai, Gui-Qing Zhang

2009 4th IEEE Conference on Industrial Electronics and Applications > 1695 - 1698

2009 4th IEEE Conference on Industrial Electronics and Applications

The PID control algorithm commonly used in current domestic HVAC system. The difficulty status that the engineering staff encounter at the scene when they tune the parameter were given in this paper. A kind of handheld auto-tuning PID controller, based on frequency domain identification was designed, can identify online system model and give the best control parameters of the the current running system...

article

Analysis of self-organized criticality in weighted coupled systems

Gui-Qing Zhang, Lin Wang, Tian-Lun Chen

Physica A: Statistical Mechanics and its Applications > 2009 > 388 > 7 > 1249-1256

A weighted Olami, Feder, and Christensen (OFC) model, improving the redistribution rule of the original model, has been introduced. It can be seen as a generalization of the OFC model and exhibits Self-organized criticality (SOC) behavior, too. The stress evolution process has been accelerated and the nontrivial relationship between the exponent of 1/f and the control parameter has been reported....

chapter

Self-Calibration Algorithm and FPGA Implementation for Data Acquisition

Gui-Qing Zhang, Tian-Xu Zhang, Lu-Xin Yan, Lei Zhu

2007 IEEE International Conference on Control and Automation > 2548 - 2553

2007 IEEE International Conference on Control and Automation, ICCA 2007

Due to the no ideal characteristics of devices, the impacts of temperature and environment noise, linear conversion errors exist in common Data Acquisition Systems (DAS). In most applications, the acquired data need to be calibrated to satisfy the accuracy and real-time requirements of the system. However, conventional calibration methods are based on software and specialized devices are not appropriate...

article

Study on removal of trace lead from nickel sulphate solution by ion-exchange method

Lian-sheng Xiao, Gui-qing Zhang, Qi-xiu Zhang, Bo-fan Gong, more

Journal of Central South University of Technology > 2000 > 7 > 4 > 191-193

By comparing the adsorption capacity of several kinds of resins, D363 resin is regarded as the most suitable one for removing lead from nickel sulphate electrolyte. The effects of pH, temperature and contact time on exchange adsorption during removing trace lead from industrial nickel sulphate solution with D363 large-pore weak alkali anion-exchange resin are discussed. Optimum conditions of adsorption...

article

Study on removing zinc from nickel electrolyte by ion-exchange

Gui-qing Zhang, Qi-xiu Zhang, Lian-sheng Xiao, Bo-fan Gong

Journal of Central South University of Technology > 2000 > 7 > 4 > 194-197

In the process of nickel production by diaphragm electrolysis, the quality of the product has been tremendously affected by the content of zinc in the nickel electrolyte. Removing zinc from nickel electrolyte by ion-exchange is studied in the paper. Resin D201 is selected as the resin for zinc removing. Effects of the operative parameters, such as temperature, pH value and the contact time on zinc...

article

Relationship between global seismicity and solar activities

Gui-Qing Zhang

Earthquake Science > 1998 > 11 > 4 > 495-500

The relations between sunspot numbers and earthquakes (M≧6), solar 10.7 cm radio flux and earthquakes, solar proton events and earthquakes have been analyzed in this paper. It has been found that: (1) Earthquakes occur frequently around the minimum years of solar activity. Generally, the earthquake activities are relatively less during the peak value years of solar activity, some say, around the period...

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Search results for: Gui-qing Zhang

Removal of impurities from scandium solutions by ion exchange

An improved fitness evaluation mechanism with noise in prisoner’s dilemma game

Properties and Data-driven Design of Perceptual Reasoning Method Based Linguistic Dynamic Systems

Avalanche duration time in a simple heterogeneous Olami–Feder–Christensen model

Precursor solution prepared by evaporation deamination complex method for solvent separation of Mo and W by H2O2-complexation

Comprehensive identification of high-frequency and co-occurring Mafa-B, Mafa-DQB1, and Mafa-DRB alleles in cynomolgus macaques of Vietnamese origin

Leaching of nickel-molybdenum sulfide ore in membrane biological reactor

Design of square-shaped heat flux cloaks and concentrators using method of coordinate transformation

Deep removal of copper from cobalt sulfate electrolyte by ion-exchange

Design and application of handheld auto-tuning pid instrument used in HVAC

Analysis of self-organized criticality in weighted coupled systems

Self-Calibration Algorithm and FPGA Implementation for Data Acquisition

Study on removal of trace lead from nickel sulphate solution by ion-exchange method

Study on removing zinc from nickel electrolyte by ion-exchange

Relationship between global seismicity and solar activities

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