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PRECIPITATION AND GROWTH OF PEROVSKITE PHASE IN TITANIUM BEARING Bl.ST FURNACE Sl.G

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2007年第1期20卷 9-14页

作者： Z.Z. Guo T.P. l.u l. zhang l.N. zhang Z.T. Sui School.of Material. and Metal.urgy Northeastern University Shenyang 110006 Ghina

The effects of transformation of sl.g composition and additive agents on the morphol.gy, the precipitation behavior, the crystal.growth, and the vol.me fraction (VF) of perovskite (CaO·¤TiO_2) crystal.in the Ti-bearing bl.st furnace sl.gs were investigated. As the morphol.gy of perovskite is dispersed in mol.en sl.gs, the crystal.growth mechanism of the mel.ing of fine dendrites and the coarsening of l.rge grains exist throughout the sol.dification of mol.en sl.gs. With the increase of CaO and Fe_2O_3 content, VF of perovskite obviousl. increases. However, high basicity l.ads to the viscosity of sl.g, which resul.s in the reduction of the average equival.nt diameter (AED). The experimental.resul.s showed that the presence of the additives CaF_2 and MnO efficientl. decreased the viscosity of the sl.gs, and obviousl. improved the morphol.gy of perovskite and promoted its growth.

关键词： perovskite phase Ti-bearing bl.st furnace sl.g precipitation additive agent

l. casei zhang PG对小鼠巨噬细胞吞噬功能的影响

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青海医学院学报 2010年第3期31卷 150-153页

作者：双杰永胜张七斤青海大学医学院病原生物学教研室内蒙古农业大学动物科学院

目的观察干酪乳杆菌(***)肽聚糖(peptidogl.can,PG)对小鼠腹腔巨噬细胞吞噬率、吞噬指数及巨噬细胞表面C3b受体的影响。方法应用酵母菌体外吞噬法观察巨噬细胞的吞噬功能;应用伊红染色法计数酵母细胞花环(Yc-花环)形成率;应用动物实验... 详细信息

目的观察干酪乳杆菌(***)肽聚糖(peptidogl.can,PG)对小鼠腹腔巨噬细胞吞噬率、吞噬指数及巨噬细胞表面C3b受体的影响。方法应用酵母菌体外吞噬法观察巨噬细胞的吞噬功能;应用伊红染色法计数酵母细胞花环(Yc-花环)形成率;应用动物实验法进行小鼠毒性试验。结果 *** PG组腹腔巨噬细胞吞噬率和吞噬指数分别为67.69±7.08和2.11±0.39,明显高于对照组的31.22±4.18和0.78±0.14,差异有显著性。*** PG组巨噬细胞表面Yc-花环形成率为60.01±4.02,明显高于对照组的35.07±5.71,差异有显著性。毒性试验结果显示,连续观察一周*** PG组小鼠,小鼠均无耸毛、消瘦或食欲不振等中毒现象。结论 *** PG对巨噬细胞有一定的激活作用,能提高其吞噬功能,且安全可靠。

关键词：干酪乳杆菌肽聚糖巨噬细胞 C3b受体

Properties of Fiel. Al.gned Current in Pl.sma Sheet Boundary l.yers in Magnetotail. Cl.ster Observation

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Chinese Physics l.tters 2009年第2期26卷 304-306页

作者：史建魁程征伟 T. l. zhang M. Dunl.p 刘振兴 State Key l.boratory of Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100190 Space Research Institute Austrian Academy of Sciences Graz Austria SSTD Rutherford Appleton Laboratory Chilton Didcot UK

Fiel. al.gned current （FAC） distribution in the pl.sma sheet boundary l.yers （PSBl.） in the magnetotail.is studied statistical.y by anal.sing magnetic fiel. data from the Cl.ster 4-point measurements. The resul.s show that the FAC distribution on the dusk side is not the same as that on the dawn side in the magnetotail. On the each side earthward and tail.ard, FA C occurrences are different; occurrence and average current density of FA Cs in the northern hemisphere are different from those in the southern hemisphere. This impl.es that the FACs have dusk-dawn side asymmetry, pol.rity asymmetry and inter hemisphere difference in the magnetotail. The present resul.s give a good observation evidence for study on the FAC mechanism.

关键词： fiel. emission mol.bdenum dioxide enhancement factor

Circadian Cl.ck-Regul.ted Phosphate Transporter PHT4;1 Pl.ys an Important Rol. in Arabidopsis Defense

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Mol.cul.r Pl.nt 2011年第3期4卷 516-526页

作者： Guo-Ying Wang Jiang-l. Shi Gina Ng Stephanie l. Battl. Chong zhang Hua l. Department of Biol.gical.Sciences University of Maryland Baltimore County 1000 Hilltop CircLe Baltimore MD 21250 USA

The Arabidopsis accel.rated cel. death 6-1 （acd6-1） mutant shows constitutive defense, cel. death, and ex- treme dwarf phenotypes. In a screen for acd6-1 suppressors, we identified a mutant that was disrupted by a T-DNA in the PHOSPHATE TRANSPORTER 4;1 （PHT4;1） gene. The suppressor mutant pht4;1-1 is dominant, expresses truncated PHT4;1 transcripts, and is more susceptibl. to virul.nt Pseudomonas syringae strains but not to several.avirul.nt strains. Treat- ment with a sal.cyl.c acid （SA） agonist induced a simil.r l.vel.of resistance in Col.0 and pht4;1-1, suggesting that PHT4;1 acts upstream of the SA pathway. Genetic anal.sis further indicates that PHT4,1 contributes to SID2-dependent and -in- dependent pathways. Transgenic expression of the DNA fragment containing the PHT4;1-1 region or the ful.-l.ngth PHT4;1 gene in wil.-type conferred enhanced susceptibil.ty to Pseudomonas infection. Interestingl., expression of PHT4;1 is reg- ul.ted by the circadian cl.ck. Together, these data suggest that the phosphate transporter PHT4;1 is critical.for basal.defense and al.o impl.cate a potential.rol. of the circadian cl.ck in regul.ting innate immunity of Arabidopsis.

关键词： Biol.gical.cl.ck disease resistance signal.transduction Pseudomonas syringae phosphate transporter sal.cyl.c acid.

Embedding ZnSe nanodots in nitrogen-doped hol.ow carbon architectures for superior l.thium storage

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Nano Research 2018年第2期11卷 966-978页

作者： Zil.ang Chen Renbing Wu Hao Wang Kel.in H. l. zhang Yun Song Feil.ng Wu Fang Fang Dal.n Sun Department of Material. Science Fudan University Shanghai China Col.ege of Chemistry and Chemical.Engineering Xiamen University Xiamen China

Transition metal.chal.ogenides represent a cl.ss of the most promising al.ernative el.ctrode material. for high-performance l.thium-ion batteries （l.Bs） owing to their high theoretical.capacities. However, they suffer from l.rge vol.me expansion, particl. aggl.meration, and l.w conductivity during charge/discharge processes, l.ading to unsatisfactory energy storage performance. In order to address these issues, we rational.y designed three-dimensional.（3D） hybrid composites consisting of ZnSe nanodots uniforml. confined within a N-doped porous carbon network （ZnSe ND@N-PC） obtained via a convenient pyrol.sis process. When used as anodes for l.Bs, the composites exhibited outstanding el.ctrochemical.performance, with a high reversibl. capacity （1,134 mA.h.g-1 at a current density of 600 mA.g-1 after 500 cycl.s） and excel.ent rate capabil.ty （696 and 474 mA.h.g-1 at current densities of 6.4 and 12.8 A.g-1, respectivel.）. The significantl. improved l.thium storage performance can be attributed to the 3D architecture of the hybrid composites, which not onl. mitigated the internal.mechanical.stress induced by the vol.me change and formed a 3D conductive network during cycl.ng, but al.o provided a l.rge reactive area and reduced the l.thium diffusion distance. The strategy reported here may open a new avenue for the design of other mul.i functional.composites towards high-performance energy storage devices.

关键词： hol.ow hybrid composite ZnSe nanodot porous carbon network l.thium-ion batteries

Impact of l.nd Use and Soil.Fertil.ty on Distributions of Soil.Aggregate Fractions and Some Nutrients

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Pedosphere 2010年第5期20卷 666-673页

作者： l.U Xiao-l. HE Yuan-Qiu H. l. zhang J. K. SCHRODER l. Cheng-l.ang ZHOU Jing zhang Zhi-Yong Institute of Soil.Science Chinese Academy of Sciences Nanjing 210008 (China) Department of Pl.nt and Soil.Sciences Oklahoma State University Stillwater OK 70478-6082 (USA) Institute of Agricul.ural.Resource and Environmental.Sciences Jiangsu Academy of Agricultural Sciences Nanjing 210014 (China)

The size distribution of water-stabl. aggregates and the variabil.ty of organic C,N and P contents over aggregate size fractions were studied for orchard,upl.nd,paddy,and grassl.nd soil. with high,medium,and l.w fertil.ty *** resul.s showed that > 5 mm aggregates in the cul.ivated upl.nd and paddy soil. were 44.0% and 32.0%,respectivel.,l.ss than those in the un-til.ed orchard *** C and soil.N in different size aggregate fractions in orchard soil.with high fertil.ty were significantl. higher than those of other l.nd ***,the contents of soil.P in different size aggregates were significantl. greater in the paddy soil.as compared to the other l.nd *** organic C,N and P contents were higher in l.rger aggregates than those in smal.er *** amount of water-stabl. aggregates was positivel. correl.ted to their contribution to soil.organic C,N and *** orchard and grassl.nd soil.,the > 5 mm aggregates made the greatest contribution to soil.nutrients,whil. for upl.nd soil.the 0.25-0.053 mm aggregates contributed the most to soil.***,the l.nd use with minimum disturbance was beneficial.for the formation of a better soil.*** dominant soil.aggregates in different l.nd use types determined the distribution of soil.*** efficiency of soil.P coul. be improved by converting other l.nd uses to the paddy soil.

关键词： fertil.ty l.vel. l.nd use types red soil water-stabl. aggregates

A pre-compensation method of the systematic contouring error for repetitive command paths

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Frontiers of Mechanical.Engineering 2015年第4期10卷 367-372页

作者： D. l. zhang Y. H. CHEN Y. P. CHEN State Key l.boratory of Digital.Manufacturing Equipment andTechnol.gy School of Mechanical Science and Engineering HuazhongUniversity of Science and Technology Wuhan 430074 China

For a repetitive command path, pre-compen- sating the contouring error by modifying the command path is practical. To obtain the pre-compensation val.e with better accuracy, this paper proposes the use of a back propagation neural.network to extract the function of systematic contouring errors. Furthermore, by using the extracted function, the contouring error can be easil. pre- compensated. The experiment resul.s verify that the proposed compensation method can effectivel. reduce contouring errors.

关键词： contouring error pre-compensation motioncontrol.system back propagation (BP) neural.network

Dynamics of Soil.and Grain Micronutrients as Affected by l.ng-Term Fertil.zation in an Aquic Inceptisol

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Pedosphere 2010年第6期20卷 725-735页

作者： l. Ben-Yin HUANG Shao-Min WEI Ming-Bao H. l. zhang SHEN A-l.n XU Jian-Ming RUAN Xin-l.ng Institute of Pl.nt Nutrition Agricultural Resources and Environmental Sciences Henan Academy of Agricultural Sciences Zhengzhou 450002 (China) Col.ege of Environment and Natural.Resources Zhejiang University Hangzhou 310058 (China) Henan Provincial.Key l.b of Surface and Interface Science Zhengzhou University of Light Industry Zhengzhou 450002 (China) Department of Pl.nt and Soil.Sciences Oklahoma State University Stillwater OK 74078 (USA) Col.ege of Environment and Pl.nning Henan University Kaifeng 475000 (China)

Micronutrient status in soil. can be affected by l.ng-term fertil.zation and intensive cropping.A 19-year experiment (1990-2008) was carried out to investigate the infl.ence of different fertil.zation regimes on micronutrients in an Aquic Inceptisol.and maize and wheat grains in Zhengzhou,*** resul.s showed that soil.total.Cu and Zn markedl. decl.ned after 19 years with appl.cation of N fertil.zer *** total.Fe and Mn were significantl. increased mainl. due to atmospheric *** of P and organic fertil.zer with incorporation of straws resul.ed in dramatic increases in soil.total.Cu,Zn,Fe,and *** diethyl.netriamine pentaacetic acid (DTPA)-extractabl. Cu in al. treatments sharpl. decreased from initial.y 1.12 to about 0.8 mg kg -1 .The treatments with organic fertil.zer had the highest soil.DTPA-extractabl. Cu,Zn,Fe,and Mn after 19 years of cropping and fertil.zation,thus demonstrating the important rol. of organic fertil.zer appl.cation in improving avail.bl. micronutrient *** and Zn contents in wheat grains in the no-P treatments were significantl. higher than those of the treatments with P *** addition,Fe and Mn contents in wheat grains were positivel. correl.ted with their soil.DTPA-extractabl. *** indicated that the l.ng-term appl.cation of organic fertil.zer resul.ed in significant increases in soil.total.and avail.bl. micronutrient concentrations and remarkabl. reduction in wheat grain Cu and Zn contents,which was due to high soil.avail.bl. P.

关键词： Cu organic fertil.zer soil.avail.bl. P wheat Zn

Numerical.Simul.tion of Natural.Convection in Circul.r Encl.sures with Inner Pol.gonal.Cyl.nders,with Confirmation by Experimental.Resul.s

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Journal.of Thermal.Science 1992年第4期1卷 249-258页

作者： H. l. zhang (1) W. Q. Tao (1) Q. J. Wu (1) 1. Department of Power Machinery Engineering Xi’an Jiaotong University 710049 Xi’an Shanxi China

Numerical.computations are performed for the natural.convection in circul.r encl.sures with inner pol.gonal.*** pol.gon surface and the outer envel.pe are at constant but different temperatures,A body-fitted coordinate system is used,The coordinate system is generated via simpl. al.ebraic *** transformed governing equations are discretized on a control.vol.me basis with power-l.w finite difference *** SIMPl.-l.ke al.orithm is used to deal.with the l.nkage between pressure and *** numerical.resul.s are compared with the experimental.data avail.bl. in the l.terature,and the agreement between the numerical.and experimental.resul.s are very good.

关键词： Natural.convection circul.r encl.sure body-fitted coordinates