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Journal of Mountain Science 2013年第1期10卷 149-162页

作者： CAO yin-gui BAI Zhong-ke ZHOU Wei WANG Jing School of Land Science and Technology China University of Geosciences Key Laboratory of Land Reconsolidation and Rehabilitation Ministry of Land and Resources Key Laboratory of Land Use Ministry of Land and Resources

The Three Gorges project accelerates economic development in the Three Gorges Reservoir *** paper aimed to investigate the distribution,changes and features of cultivated land in this area,analyze the forces driving the changes in cultivated land area,and propose the countermeasures for cultivated land *** matrix was used to analyze the features of cultivated land changes,and quantitative analysis and qualitative analysis were adopted to research the driving forces according to the features of cultivated land *** land in the Three Gorges Reservoir Area mainly lay to the northwest of the Yangtze River,especially the upper *** areas of cultivated land increased from 1996 to 1999,then decreased from 2000 to 2006,and finally increased again from 2007 to *** important forces driving changes in cultivated land included government policies,employment and food security,increasing construction land,agriculture structure adjustment,land rearrangement,*** cultivated land management,firstly,it is necessary to insist on the principle of cultivated land protection,standardize land exploitation and strictly restrict the transformation of cultivated land into non-farming ***,land rearrangement must be implemented,which can not only increase the area of the cultivated land,but also improve the quality of the cultivated ***,it is feasible to intensify eco-agriculture construction to increase the quantity and quality of cultivated ***,it is helpful to improve the traditional agriculture production methods to promote cultivated land ***,it is important to propagandize cultivated land protection and realize the enormous pressure of cultivated land shortage,making more people obligated to protect cultivated land.

关键词： Land use change Driving force Management countermeasure Cultivated land Three Gorges Reservoir Area

Effect of carbon species on the reduction and melting behavior of boron-bearing iron concentrate/carbon composite pellets

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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

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

Reduction Characteristics and Kinetics of Bayanobo Complex Iron Ore Carbon Bearing Pellets

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Journal of Iron and Steel Research International 2013年第5期20卷 28-33页

作者： DING yin-gui WANG Jing-song SHE Xue-feng WANG Guang XUE Qing-guo State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

The kinetics of isothermal reduction of the carbon bearing pellets, which were mainly composed of Bayanobo complex iron ore and pulverized coal, was investigated by thermogravimetry at the temperature of 1 273-1 673 K. The effects of xC/xO and the atmospheres on the extent of reduction also were investigated. The results indicate that the fractional reaction increased proportionally with temperature increasing and heating temperature is the significant influence factor to the reaction of carbon bearing pellets. The optimum xC/xO is 1.2 and the effect of atmosphere on the reduction of iron oxides is almost negligible. The results can be interpreted that the reaction was initially controlled by a mixed controlled mechanism of carbon gasification and interface chemical reaction, and in the later stage, interface chemical reaction became the rate-controlling step. Apparent activation energy values of reduction at different levels of fractional reaction were calculated. Before F （fraction of reaction）=0.5, the apparent activation energy ranges from 66.39 to 75.64 kJ/mol, while after F=0.5, the apparent activation energy is 80.98 to 85.37 kJ/mol.

关键词： Bayanobo complex iron ore carbon bearing pellet thermogravimetry apparent activation energy

Comprehensive Utilization of Paigeite Ore Using Iron Nugget Making Process

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Journal of Iron and Steel Research International 2012年第6期19卷 9-13页

作者： DING yin-gui WANG Jing-song WANG Guang MA Sai XUE Qing-guo State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The feasibility of paigeite ore treatment with iron nugget making process is proved. The isothermal reduc- tion experiments at laboratory scale were carried out, using carbon bearing pellets which were made of boron contai- ning iron concentrate and pulverized coal mainly, from 1 623 to 1 723 K with different heating time. The results indi- cated that iron nugget making process depends mainly on heating time and temperature. And the iron nugget and slag can separate in a clean manner at 1 673 K for 15 min. For the iron nugget, the C content is 3.57% （mass percent） and B is 0. 065~ （mass percent）. The B203 content of slag is 20.01~/00, and the boron was concentrated into one phase which is identified as suanite （Mg2BaOs） during the solidification. With an extraction ratio of 80~ under the atmospheric conditions, the activity of boron in slag is good. The boron-rich slag can be used to extract boric or boric acid and alleviate the shortage of boron resource. Through series of calculation and analysis related, it can be conclu- ded that the recovery ratio of Fe and boron are about 98% and 97% respectively. The results show that this method is feasible and effective on the utilization of paigeite ore.

关键词： boron containing iron concentrate carbon bearing pellets iron nugget boron-rich slag

Development of short prototype of dual aperture quadrupole magnet for CEPC ring

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Nuclear Science and Techniques 2023年第7期34卷 148-158页

作者： Mei Yang Fu-San Chen Ya-Feng Wu Zhuo Zhang Bao-gui yin Bin Na Zhan-Jun Zhang Institute of High Energy Physics Chinese Academy of SciencesBeijing 10049China Key Laboratory of Particle Acceleration Physics and Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China Beijing HE-Racing Technology Co. Ltd.Beijing 1000049China

Main quadrupole magnets are critical for the Circular Electron and Positron Collider(CEPC)and are specifically designed as dual aperture quadrupole(DAQ)***,the field crosstalk between the two apertures presents *** the CEPC will work at four beam energies of Z,W,Higgs and ttbar mode,the DAQ magnets will operate at four field gradients spanning from 3.18 to 12.63 T/*** first short quadrupole magnet prototype with the bore diameter of 76 mm and magnetic length of 1.0 m revealed the problems of large magnetic field harmonics and a magnetic center shift within the beam energy ***,a compensation method was proposed in this work to solve the field crosstalk *** adjusting the gap height at the middle of the two apertures,the field harmonics and magnetic center shift are significantly *** optimization,the short prototype was modified using a new *** field simulations are validated from the magnetic measurement ***,the multipole field meets the requirements of the four beam *** detailed magnetic field optimization,field harmonics adjustment,and measurement results are presented herein.

关键词： Dual aperture magnets Field measurements Crosstalk effect Quadrupole magnet Field harmonics CEPC

Preparation and characterization of ZnO/Cu/ZnO transparent conductive films

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Rare Metals 2013年第3期32卷 273-277页

作者： Wen-ying Li Lai-Xin Jiang gui-Lin yin Yuan-Yuan Wang Zhen Yu Dan-Nong He College of Materials Science and Engineering Shanghai Jiao Tong University National Engineering Research Center for Nanotechnology

ZnO/Cu/ZnO transparent conductive thin films were prepared by RF sputtering deposition of ZnO target and DC sputtering deposition of Cu target on n-type （001） Si and glass substrates at room temperature. The mor- phology, structure, optical, and electrical properties of the multilayer films were characterized by field emission scanning electron microscope （FESEM）, X-ray diffraction （XRD）, UV/Vis spectrophotometer, and Hall effect mea- surement system. The influence of Cu layer thickness and the oxygen pressure in sputtering atmosphere on the film properties were studied. ZnO/Cu/ZnO transparent conduc- tive film fabricated in pure Ar atmosphere with 10 nm Cu layer thickness has the best performance： resistivity of 2.3 × 10^-4 Ω.cm, carrier concentration of 6.44 × 10^16 cm-2, mobility of 4.51 cm2.（V.s）-1, and acceptable aver- age transmittance of 80 % in the visible range. The trans- mittance and conductivity of the films fabricated with oxygen are lower than those of the films fabricated without oxygen, which indicates that oxygen atmosphere does not improve the optical and electrical properties of ZnO/Cu/ ZnO films.

关键词： ZnO Cu Transparent conductive films Magnetic sputtering

Constructing high-capacity and flexible aqueous zinc-ion batteries with air-recharging capability using organic cathodes

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Chinese Chemical Letters 2024年第3期35卷 468-472页

作者： Xiaojuan Chen Haoqi Su Baozhu Yang Xiaocen Liu Xiuting Song Lixin Su gui yin Qi Liu Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis Green Manufacturing Collaborative Innovation Center and School of Petrochemical EngineeringChangzhou UniversityChangzhou 213164China State Key Laboratory of Coordination Chemistry Nanjing UniversityNanjing 210093China

Flexible aqueous zinc-ion batteries(AZIBs)with air-recharging capability are a promising self-powered system applied in future wearable *** is desired to develop high-capacity air-rechargeable ***,we developed a flexible AZIB with air-recharging capability based on trinitrohexaazatrinaphthylene(TNHATN)cathode and a ZnSO_(4)*** flexible Zn//TNHATN battery exhibits high volumetric energy density(21.36 mWh/cm^3)and excellent mechanical ***,the discharged flexible Zn//TNHATN battery can be chemical self-charged via the redox reaction between TNHATN cathode and O_(2)from the *** oxidation in air for 15 h,such flexible Zn//TNHATN battery can deliver a high specific capacity of 320 mAh/g at 0.5 A/g,displaying excellent air-recharging ***,this flexible Zn//TNHATN battery also works well in chemical or/and galvanostatic charging mixed modes,showing *** work provides a new insight for designing flexible aqueous self-powered systems.

关键词： Aqueous zinc-ion battery Trinitrohexaazatrinaphthylene Organic cathode materials Flexible air-rechargeable battery Self-powered system

Expression of PI3-K,PKB and GSK-3β in the skeletal muscle tissue of gestational diabetes mellitus

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Asian Pacific Journal of Tropical Medicine 2014年第4期7卷 309-312页

作者： Tao Zhang Min Fang Zi-Mu Fu He-Chun Du Hua Yuan gui-Yu Xia Jie Feng gui-Yun yin Shaoxing Women and Children's Hospital Department of Gynaecology Linyi People's Hospital

Objective:To analyze the expression of phosphatidylinositol 3 kinase(PI3-K),protein kinase B(PKB)and glycogen synthase kinase 3 beta(GSK-3β)in skeletal muscle tissue of gestational diabetes mellitus(GDM).Methods:A total of 90 cases of pregnant women were divided into observation group and control group according to the occurrence of GDM with 45 cases in either,and the expression of PI3-K,PKB,GSK-3βmRNA expression in skeletal muscle tissue was compared between two ***:The total PI3-K p85 protein was significantly higher in the observation group compared with the control group,the activity of PI3-K was lower than that of the latter;The total PKB,GSK-3βprotein in skeletal tissue had no significant difference between two groups,while the serine phosphorylation levels of PKB and GSK-3βwere significantly lower in observation group compared with the control ***:The downregulation of PI3-K,PKB and GSK-3βin skeletal tissue of GDM caused by phosphorylation dysfunction of signaling molecules is the reason for insulin resistance and transporter function decline which lead to GDM.

关键词： Phosphatidylinositol 3 kinase Protein kinase B Glycogen synthase kinase 3β Gestational diabetes mellitus Skeletal musclet