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International Journal of Minerals,Metallurgy and Materials 2013年第6期20卷 522-528页

作者： Guang Wang yin-gui ding Jing-song Wang Xue-feng She Qing-guo Xue State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

Iron nugget and boron-rich slag can be obtained in a short time through high-temperature reduction of boron- bearing iron concentrate by carbonaceous material, both of which are agglomerated together as a carbon composite pellet. This is a novel flow sheet for the comprehensive utilization of boron-bearing iron concentrate to produce a new kind of man-made boron ore. The effect of reducing agent species （i.e., carbon species） on the reduction and melting process of the composite pellet was investigated at a laboratory scale in the present work. The results show that, the reduction rate of the composite pellet increases from bituminite, anthracite, to coke at temperatures ranging from 950 to 1300~C. Reduction temperature has an important effect on the microstructure of reduced pellets. Carbon species also affects the behavior of reduced metallic iron particles. The anthracite-bearing composite pellet melts faster than the bituminite- bearing composite pellet, and the coke-bearing composite pellet cannot melt due to the high fusion point of coke ash. With anthracite as the reducing agent, the recovery rates of iron and boron are 96.5% and 95.7%, respectively. This work can help us get a further understanding of the new process mechanism.

关键词： iron ore pellets iron ore reduction boron bituminite anthracite coke

Basic properties of steel plant dust and technological properties of direct reduction

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International Journal of Minerals,Metallurgy and Materials 2011年第3期18卷 277-284页

作者： Xue-feng She Jing-song Wang Qing-guo Xue yin-gui ding Sheng-sheng Zhang Jie-ji Dong Hui Zeng School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China Shandong Laiwu Iron and Steel Co. Ltd. Laiwu 271104 China

Basic physicochemical properties of the dust from Laiwu Iron and Steel Co. Ltd. were studied. It is found that C, Zn, K, Na, etc. exist in the fabric filter dust, off gas （OG） sludge, fine ash in converter, and electrical field dust in sinter. Among these, OG sludge gives the finest particle, more than 90% of which is less than 2.51 mm. The dust can lead to a serious negative influence on the production of sintering and blast furnaces （BF） if it is recycled in sintering. The briquette and reduction experimental results showed that the qualified strength could be obtained in the case of 8wt% molasses or 4wt% QT-10 added as binders. Also, more than 75% of metallization ratio, more than 95% of dezincing ratio, as well as more than 80% of K and Na removal rates were achieved for the briquettes kept at 1250℃ for 15 min during the direct reduction process. SEM observation indicated that the rates of indirect reduction and carbonization became dominating when the bri-quettes were kept at 1250℃ for 6 min.

关键词： steel metallurgy dust zinc direct reduction process briquettes

2D phosphides heterostructures on titanium microfiltration membrane for enhanced ampere-level current density overall seawater splitting

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Nano Research 2025年第1期18卷 249-259页

作者： Wenjing Dai Xin Wang Yulong Ma Sisi He Ming Chen Zhaohui yin Shuheng Tian Maolin Wang Shixiang Yu Hang Zhang Yuanzhe Wang Hong Wang Jianxin Li Faming Gao Bowen Cheng Yun Wang Zhen yin ding Ma Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization College of Chemical Engineering and Materials ScienceTianjin University of Science and TechnologyTianjin 300457China State Key Laboratory of Biobased Fiber Manufacturing Technology Tianjin University of Science and TechnologyTianjin 300457China Haian Institute of High-Tech Research Nanjing UniversityHaian 226600China Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Separation Membranes and Membrane Processes Separation Membrane Science and Technology International Joint Research CentreTiangong UniversityTianjin 300387China Centre for Catalysis and Clean Energy School of Environment and ScienceGold Coast CampusGriffith UniversitySouthportQueensland 4222Australia

The advancement of direct seawater electrolysis is a significant step towards sustainable hydrogen production,addressing the critical need for renewable energy sources and efficient resource ***,direct seawater electrolysis has to face several challenges posed by the corrosiveness of highly concentrated chloride and the competitive chlorine evolution reaction(ClER).To overcome these issues,we designed a novel NiP_(2)@CoP electrocatalyst on a porous titanium microfiltration(Ti MF)*** obtained bifunctional NiP_(2)@CoP catalyst outperforms the Pt/C and IrO_(2),as evidenced by its low overpotentials of 192 and 425 mV at a current density of 500 mA·cm^(-2) for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in alkaline seawater(1 M KOH+0.5 M NaCl),***,only 231 and 569 mV overpotentials are required at the current density of 1500 mA·cm^(-2) towards HER and OER in alkaline seawater,*** importantly,no ClER was observed,demonstrating its excellent selectivity to *** selection of porous Ti MF membrane as an electrode substrate further enhances the performance by providing a robust structure that promotes the fast generation and release of gas *** promising outcomes obtained with NiP_(2)@CoP catalysts on Ti MF support,therefore,pave the way for the commercial viability of direct seawater electrolysis technologies at industrial-level current densities.

关键词： direct seawater electrolysis porous titanium microfiltration membrane phosphides heterostructures NiP_(2)@CoP electrocatalyst excellent selectivity to oxygen evolution reaction(OER)

PREPARATION AND CHARACTERIZATION OF NOVEL CHITOSAN DERIVATIVES:ADSORPTION EQUILIBRIUM OF IRON(Ⅲ) ION

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Chinese Journal of Polymer Science 2008年第1期26卷 1-11页

作者： Ke-long Huang Ping ding Su-qin Liu gui-yin Li Yan-fei Liu School of Public Health College of Chemisty and Chemical EngineeringCentral South UniversityChangsha 410083China

The adsorption of Fe(Ⅲ)ions from aqueous solution by chitosan alpha-ketoglutaric acid(KCTS)and hydroxamated chitosan alpha-ketoglutaric acid(HKCTS)was studied in a batch adsorption *** were carried out as function of pH,temperature,agitation rate and concentration of Fe(Ⅲ)*** Langmuir and Freundlich adsorption models were applied to describe the equilibrium isotherms and isotherm constants were *** Langmuir model agrees very well with experimental *** pseudo-first-order a...

关键词： Chitosan derivatives Fe(Ⅲ)ion Adsorption kinetics

On the Application of PCA Technique to Fault Diagnosis

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Tsinghua Science and Technology 2010年第2期15卷 138-144页

作者： ding S ZHANG P ding E yin S Naik A DENG P gui W Institute for Automatic Control and Complex Systems (AKS) University of Duisburg-Essen 47057 Duisburg Germany Department of Physical Engineering University of Applied Sciences Gelsenkirchen 45877 Gelsenkirchen Germany School of Information Science and Engineering Central South University Changsha 410083 China

In this paper, we bdefly address the application of the standard principal component analysis （PCA） technique to fault detection and identification. Based on an analysis of the existing test statistic, we propose a new test statistic, which is similar to the Hawkin＇s T2 H statistic but without the numerical drawback. In comparison with the SPE index, the threshold setting associated with the new statistic is computationally simpler. Our further study is dedicated to the analysis of fault sensitivity. We consider the off-set and scaling faults, and evaluate the test statistic by viewing its sensitivity to the faults. Our final study focuses on identifying off-set and scaling faults. To this end, two algorithms are proposed. This paper also includes some critical remarks on the application of the PCA technique to fault diagnosis.

关键词： process monitoring fault diagnosis principal component analysis (PCA) multivariate analysis

The Isometric Extension Problem between Unit Spheres of Two Separable Banach Spaces

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Acta Mathematica Sinica,English Series 2015年第12期31卷 1872-1878页

作者： Guang gui ding School of Mathematical Sciences and LPMC Nankai University

In this article,we use some analytic and geometric characters of the smooth points in a sphere to study the isometric extension problem in the separable or reflexive real Banach *** obtain that under some condition th... 详细信息

关键词： Isometric extension smooth point supporting functional set of first category set of second category residual subset

On Linearly Isometric Extensions for 1-Lipschitz Mappings Between Unit Spheres of ALP-spaces (p>2)

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Acta Mathematica Sinica,English Series 2010年第2期26卷 331-336页

作者： Guang gui ding School of Mathematical Science and LPMC Nankai University Tianjin 300071 P. R. China

In this paper, we show that if Vo is a 1-Lipschitz mapping between unit spheres of two ALP-spaces with p 〉 2 and -Vo（S1（LP）） C Vo（S1（LP））, then V0 can be extended to a linear isometry defined on the whole space. If 1 〈 p 〈 2 and Vo is an ＂anti-l-Lipschitz＂ mapping, then Vo can also be linearly and isometrically extended.

关键词： isometric extension ALp-space strictly convex

The Representation Theorem of onto Isometric Mappings between Two Unit Spheres of l^1(Г) Type Spaces and The Application to the Isometric Extension Problem

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Acta Mathematica Sinica,English Series 2004年第6期20卷 1089-1094页

作者： Guang gui ding School of Mathematics Science and LPMC Nankai University

In this paper,we first derive the representation theorem of onto isometric mappings in theunit spheres of l~1(F) type spaces,and then conclude that such mappings can be extended to the wholespace as real linear isomet... 详细信息

关键词： Isometric mapping Isometric extension

Cerium oxide nanoparticles-mediated cascade catalytic chemo-photo tumor combination therapy

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Nano Research 2022年第1期15卷 333-345页

作者： Zitao Hu yin ding State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210093China

ROS-based tumor therapy based on nanocatalytic medicine has recently been proposed for its ***,a safe and highly efficient strategy towards getting high enough ROS to kill the hypoxic cancer cells is still a great ***,we report a simple pH/H_()20_(2)-activatable,O_(2)-evolving,and ROS regulating doxorubicin(DOX)and indocyanine green(ICG)co-loading PEGylated polyaniline(PANI)coated CeOx@polyacrylic acid(PAA)nanoclusters for highly selective and optimized cancer combination *** can selectively and greatly enhance intracellular O_(2) and ROS levels in tumor region,which depends on two-step catalytic properties of nanoceria(Ce^(4+)/Ce^(3+)=3.46,neutral surface charge,mostly localize into the cytoplasm,pH 7.4-6.5,catalase-like catalytic agents convert to Ce^(4+)/Ce^(3+)=0.58,negative surface charge,mostly localize into the lysosomes,pH 5-4,oxidase-like catalytic agents,triggered by near infrared(NIA)laser irradiation).Furthermore,the protective effect of polyethylene glycol(PEG),PANI,and PAA ensure that the nanoceria can only play the role of catalase under the irradiation of NIR light arrived at the tumor ***,loading of nanoceria and ICG onto PANI greatly enhanced photo thermal effect of nanoparticles.(NPs),which is useful for killing cancer cells by relieving hypoxia and promoting cross-membrane drug *** further enhance photodynamic therapy and chemotherapy *** chemo-photo combination therapies fantastically inhibited tumor growth and prevented tumor recurrence in vivo,suggesting a smart nanotheranostic system to achieve more precise and effective therapies in O_(2)-deprived tumor tissue.

关键词： nanocatalytic medicine photodynamic therapy hypoxia cerium oxide@polyaniline combination therapy

A Note on Linear Extension of Into-Isometries Between Two Unit Spheres of Atomic AL^p-Space （0 〈 p 〈∞）

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Acta Mathematica Sinica,English Series 2006年第1期22卷 279-282页

作者： Guang gui ding School of Mathematics Science and LPMC Nankai University Tianjin 300071 P. R. China

In this paper, we shall present a short and simple proof on the isometric linear extension problem of into-isometries between two unit spheres of atomic abstract L^p-spaces （0 〈 p 〈 ∞）.

关键词： Isometric extension Atomic abstract L^p-space