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Development of a Non-Pollution Orange Fruit Expert System Software Based on ***

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Agricultural Sciences in China 2011年第5期10卷 805-812页

作者： LI yi-shan HONG Li-fang Institute of Network Technology Beijing University of Posts and Telecommunications Beijing 100876 P.R.China Agricultural Environment and Resource Institute Yunnan Academy of Agricultural Sciences Kunming 650205 P.R.China

Based on ***,a orange fruit tree fertilizer expert system software was *** system could simulate and decide an annual fertilization plan for young and mature trees in terms of geographical position and *** paper introduced the design conditions,framework,production,and deployment of the *** exhibited characters of orange specialty and was a typical online agriculture expert *** use of the system for orange fruit management could decrease production cost,guarantee orange quality and improve economical benefit at the same *** using the system saved N input by 41-238 g/plant,P2O5 input 3-24 g/plant,and K2O input 1-36 g/plant,and got higher yield by 6-17 kg/plant.

关键词： rational fertilization expert system orange fruit tree ***

Effect of Rare Earth and Cooling Process on Microstructure and Mechanical Properties of an Ultra-Cleaned X80 Pipeline Steel

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Acta Metallurgica Sinica(English Letters) 2021年第5期34卷 639-648页

作者： He Duan yi-yin shan Ke Yang Xian-Bo Shi Wei Yan yi Ren Institute of Metal Research Chinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China State Key Laboratory of Metal Materials and Application for Marine Equipment Anshan114009China

In order to explore the eff ect of a small amount of rare earth addition in ultra-cleaned pipeline steel and the influence of the cooling process on the tensile and impact properties,three API X80 pipeline steels were fabricated by varying RE addition and the cooling process at the same *** microstructures with different features for a low C high Nb microalloyed high-strength pipeline steel and the corresponding mechanical properties were *** results showed that even in the ultra-cleaned steel with O and S contents less than 10 ppm,the addition of RE would still cause an increase in the volume fraction of inclusions consisting of complicated RE oxysulfide and RE *** inclusions formed in the 112 ppm RE steel were harmful to the low temperature toughness,while few inclusions formed in the 47 ppm RE steel had almost no influence on the low temperature *** two RE additions had no effect on strength of the *** the finishing cooling temperature was increased and the cooling rate was decreased within a certain range,the volume fractions of polygonal ferrite and quasi-polygonal ferrite as well as the number density and size of martensite–austenite islands were *** such combined effect,the strength of the steels had almost no *** the finishing cooling temperature was increased from 481 to 584℃and the cooling rate was reduced from 20 to 13℃/s,for the steel with 112 ppm addition of RE,there was an obvious decrease in the low temperature *** reduced value(about 33 J)of the USE of steel consisted of two parts including the influence(about 18 J)of more inclusions formed due to 112 ppm addition of RE and the eff ect(about 15 J)of the lower high-angle grain boundaries.

关键词： Low temperature toughness Cooling process High-angle grain boundaries(HAGBs) Ductile–brittle transition temperature(DBTT) Rare earth Inclusions

Jasmonate Signal Pathway in Arabidopsis

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Journal of Integrative Plant Biology 2007年第1期49卷 81-86页

作者： Xiao-yi shan Zhi-Long Wang Daoxin Xie Department of Biological Sciences and Biotechnology Tsinghua University Beijing 100084 China Temasek Life Science Laboratory National University of Singapore117604 Republic of Singapore

Jasmonates （JAs）, which include jasmonic acid and its cyclopentane derivatives are synthesized from the octadecanoid pathway and widely distributed throughout the plant kingdom. JAs modulate the expression of numerous genes and mediate responses to stress, wounding, insect attack, pathogen infection, and UV damage. They also affect a variety of processes in many plant developmental processes. The JA signal pathway involves two important events： the biosynthesis of JA and the transduction of JA signal. Several important Arabidopsis mutants in jasmonate signal pathway were described in this review.

关键词： jasmonate SCF^COl1 Arabidopsis

A novel poly[acrylonitrile-co-(3-ammoniumcarboxylate-butenoic acid-methylester)]copolymer for carbon fiber precursor

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Chinese Chemical Letters 2012年第11期23卷 1307-1310页

作者： An Qi Ju shan yi Guang Hong Yao Xu College of Materials Science and Engineering&State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua UniversityShanghai 201620China College of Chemistry&Chemical Engineering Donghua UniversityShanghai 201620China

A novel bifunctional comonomer 3-ammoniumcarboxylate-butenoic acid-methyl ester （ACBM） was synthesized tor preparing poly[acrylonitrile-co-（3-ammoniumcarboxylate-butenoic acid-methyl ester）] [P（AN-co-ACBM）] copolymer as a carbon fiber precursor. Differential scanning calorimetry results show that the P（AN-co-ACBM） exhibits a significantly improved stabilization performance compared with polyacrylonitrile （PAN）, such as lower cyclization temperature and smaller rate of heat release, which is mainly attributed to the initiation of ACBM through an ionic cyclization mechanism. Simultaneously, the rheological analysis shows that P（AN-co-ACBM） possesses better spinnabilitv than PAN.

关键词： Polyacrylonitrile Carbon fiber Thermal analysis DSC Polymerization

Microstructural stability of 9-12%Cr ferrite/martensite heat-resistant steels

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Frontiers of Materials Science 2013年第1期7卷 1-27页

作者： Wei YAN Wei WANG yi-yin shan Ke YANG Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

The microstructural evolutions of advanced 9–12%Cr ferrite/martensite heat-resistant steels used for power generation plants are reviewed in this article. Despite of the small differences in chemical compositions, the steels share the same microstructure of the as-tempered martensite. It is the thermal stability of the initial microstructure that matters the creep behavior of these heat-resistant steels. The microstructural evolutions involved in 9–12%Cr ferrite heat-resistant steels are elaborated, including (1) martensitic lath widening, (2) disappearance of prior austenite grain boundary, (3) emergence of subgrains, (4) coarsening of precipitates, and (5) formation of new precipitates, such as Laves-phase and Z-phase. The former three microstructural evolutions could be retarded by properly disposing the latter two. Namely improving the stability of precipitates and optimizing their size distribution can effectively exert the beneficial influence of precipitates on microstructures. In this sense, the microstructural stability of the tempered martensite is in fact the stability of precipitates during the creep. Many attempts have been carried out to improve the microstructural stability of 9–12%Cr steels and several promising heat-resistant steels have been developed.

关键词： heat-resistant steel microstructure martensite precipitate microstructural evolution

Proteomics Study of Benzene Metabolite Hydroquinone Induced Hematotoxicity in K562 Cells

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Biomedical and Environmental Sciences 2024年第4期37卷 341-353页

作者： JIN yi shan yi Zong Chun ZHANG Yu Jing RONG Long YU Chun Hong School of Biological Science and Medical Engineering Beihang UniversityBeijing 100191China School of Engineering Medicine Beihang UniversityBeijing 100191China

Objective Hydroquinone(HQ),one of the phenolic metabolites of benzene,is widely recognized as an important participant in benzene-induced ***,there are few relevant proteomics in HQ-induced hematotoxicity and the mechanism hasn’t been fully understood *** In this study,we treated K562 cells with 40μmol/L HQ for 72 h,examined and validated protein expression changes by Label-free proteomic analysis and Parallel reaction monitoring(PRM),and performed bioinformatics analysis to identify interaction *** One hundred and eighty-seven upregulated differentially expressed proteins(DEPs)and 279 downregulated DEPs were identified in HQ-exposed K562 cells,which were involved in neutrophilmediated immunity,blood microparticle,and other GO terms,as well as the lysosome,metabolic,cell cycle,and cellular senescence-related *** on the 23 DEGs and 5 DEPs in erythroid differentiation-related pathways,we constructed the network of protein interactions and determined 6 DEPs(STAT1,STAT3,CASP3,KIT,STAT5B,and VEGFA)as main hub proteins with the most interactions,among which STATs made a central impact and may be potential biomarkers of HQ-induced *** Our work reinforced the use of proteomics and bioinformatic approaches to advance knowledge on molecular mechanisms of HQ-induced hematotoxicity at the protein level and provide a valuable basis for further clarification.

关键词： Hydroquinone Proteomics Hematotoxicity K562 cells

A versatile nanobuilding precursor for the effective architecture of well-defined organic/inorganic hybrid via click chemistry

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Chinese Chemical Letters 2012年第9期23卷 1095-1098页

作者： Ya Kun Zhu shan yi Guang Hong Yao Xu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials&College of Material Science and Engineering Donghua UniversityChina Shanghai 201620 College of Chemistry Chemical Engineering and BiotechnologyDonghua UniversityChina Shanghai 201620

A novel octazido substituted nanobuilding precursor, octakis[dimethy（p-azidomethylene）siloxyl]octasilsesquioxane （ODA）, was prepared by the conventional diazo-transfer reaction of octalds[dimethy（p-chloromethylene）silyl]octasilsesquioxane （ODC） with NAN3, and its structure was characterized by FT-IR, 1H, a3C, 29Si NMR and MALDI-TOF MS, respectively. The structural rearrangement of POSS core in the synthesis strategy of ODA developed in this work was effectively prohibited in comparison with traditionary azidization process. The resultant ODA was not only soluble in common solvents such as CHC13, THF, toluene, DMF and DMSO, but also could effectively serve as a versatile nanobuilding precursor for the architecture of well-defined organic- inorganic hybrids via click chemistry.

关键词： Azides POSS Nanoparticles Structural Click chemistry

High-Temperature Deformation and Low-Temperature Fracture Behavior of Steel Slag Rubber Asphalt Mixture Surface Layer

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Journal of Renewable Materials 2022年第2期10卷 453-467页

作者： Zhiqiang Shu Jianmin Wu Shi Chen shan yi haoqing Li Key Laboratory of Special Area Highway Engineering of Ministry of Education Chang’an UniversityXi’an710064China China State Railway Investment Construction Group Co. Ltd.Beijing102600China

Steel slag is regarded as one of the most widespread solid by-products of steel smelting with little commercial *** can play a vital role in the construction industry especially in the field of transportation infrastructure ***,there are few evaluation systems established on the high-temperature deformation and low-temperature fracture behavior of steel slag rubber asphalt mixture(SSRAM).This study explores the perfor-mance of SSRAM by uniaxial penetration test,Semi-Circular Bending(SCB)test and evaluates test data through regression *** uniaxial penetration test results shows that the failure deformation of SSRAM increases with the increase of steel slag *** to the minimum allowable permanent deformation(R TS-min),the deformation of SSRAM should be controlled within 3 ***,the cracking index of the SSRAM surface layer calculated at low temperature can meet the design *** SCB test results show that the stress peak degradation rate(specimens with 10 mm notch are compared with 0 mm)of SSRAM with 40%steel slag content is 20.04%.That means proper steel slag content makes the stress peak degradation rate of SSRAM reaches the lowest *** calculation results of fracture energy density(J_(1C))show that the steel slag additive reduced the fracture energy density of ***,it is still proved that SSRAM with 40%steel slag has the best low-temperature fracture performance based on critical fracture toughness(K_(1C))and fracture stress ***-more,the crack propagation velocity parametric equation of SSRAM is proposed through fracture mechanics theory and the increase of velocity is *** the high-temperature deformation resistance and low-temperature fracture property,the SSRAM surface layer with 40%steel slag content showed a batter application potential.

关键词： Steel slag asphalt mixture uniaxial penetration test SCB test deformation resistance crack propagation velocity

Polymer-based TiO_(2)nanocomposite membrane:synthesis and organic pollutant removal

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International Journal of Smart and Nano Materials 2021年第2期12卷 129-145页

作者： Junyao Wu shan yi yixuan Wang Jun Yao Wei Gaoa Department of Chemical and Materials Engineering The University of AucklandAucklandNew Zealand School of Water Resources and Environment China University of Geosciences BeijingBeijingP.R.China

Titanium dioxide(TiO_(2))nanoparticles are efficient photocatalysis for treating organic pollutants in *** TiO_(2)nanoparticles not only enables the reuse of nanoparticles but also prevents the harmful impact of releasing nanoparticles into the aquatic *** this study,a porous composite microfiber membrane based on polyacrylonitrile(PAN)with TiO_(2)nanoparticles has been synthesized by electrospinning *** new membrane system has exhibited excellent adsorptive-photocatalytic property to degrade Methylene blue(MB).Using the nonlinear form of the pseudo-first-order,pseudo-second-order,Elovich,and Intra-particle diffusion models,the adsorption mechanism was *** with adsorption and photocatalysis,the efficiency of this membrane system was illustrated via the multistage linear form of the pseudo-first-order kinetic;and the electrical energy per order(EEO)confirmed the lowest energy requirements to transfer selected *** the results of SEM,BET,FTIR,XRD and TGA,it revealed the relationship of microstructure,composition,and MB decomposition *** finding presents new knowledge for material design and evaluation of polymers/oxides membrane systems for remediating organic pollutants in water.

关键词： Electrospinning porous composite microfiber membranes TiO_(2)nanoparticles adsorption photocatalysis