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Comparison of Responses to Mn Deficiency Between the UK Wheat Genotypes Maris Butler, Paragon and the Australian Wheat Genotype C8MM

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Journal of Integrative Plant Biology 2008年第4期50卷 457-465页

作者： Wen-zhi jiang Writtle College Essex University Chelmsford Essex CM1 3RR UK

Wheat grown in Mn-deficient soil has been widely observed to produce much reduced yields. Breeding for Mn-efficient wheat genotypes adapted to Mn-deficient soils would represent a long-term solution for wheat agronomy. To characterize the physiological basis of Mn efficiency in wheat genotypes would facilitate the breeding programs for producing Mn-efficient wheat. Using a solution culture and a soil culture system in the present study, a Mn-efficient UK wheat genotype Maris Butler and a Mn-inefficient UK wheat genotype Paragon have been compared with a Mn-efficient Australian wheat genotype C8MM in the responses to Mn deficiency in order to characterize the Mn efficiency in these wheat genotypes. Results showed that in solution culture, Marls Butler grown under Mn deficiency had 77% relative dry matter yield of control plants that were grown under Mn sufficiency, whereas CSMM and Paragon had 60% and 58% relative dry matter yield of their respective controls. Results from the soil culture demonstrated that relative dry matter yield remained high for Maris Butler and C8MM （53% and 56%, respectively）, whereas the value for Paragon dropped to 33%. In terms of dry matter yield and photosynthetic efficiency, Maris Butler demonstrated Mn efficiency in both solution culture and soil culture, whereas C8MM showed Mn efficiency only in soil culture. Results also demonstrated that under Mn-depleted supply in soil, plants of C8MM had a significantly higher ability in Mn uptake, whereas plants of Marls Butler showed a higher internal Mn use efficiency in comparison with plants of Paragon. Results from the present study indicate that the ability of C8MM to accumulate higher amounts of Mn is the basis of the improved Mn efficiency of this genotype in comparison with Paragon, and in Marls Butler there is a higher internal use of Mn expressed as an improved photosynthetic efficiency in conferring its Mn efficiency. It is suggested that more than one mechanism has arisen in wheat to

关键词： Mn accumulation Mn deficiency Mn efficiency photosynthetic efficiency wheat genotype.

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REGIONAL TOURISM COOPERATION IN TRIANGLE ZONE OF LIAONING PROVINCE

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Chinese Geographical Science 2005年第4期15卷 361-367页

作者： LONG jiang-zhi School of Tourism and Hotel Management Dongbei University of Finance ＆ Economics Dalian 116025 P. R. China

Strengthening the regional tourism cooperation is the requirement of both tourism development and tourist competition drive. On the one hand, resources, products, market and infrastructure in tourism are characteristics of half-public goods, which are the externalities. On the other hand, tourism competition has evolved from individual scenic spot, or finn competition to regional competition, which also requires urgent regional tourism cooperation. In recent years, the regional economic cooperation has been becoming popular in the world. The triangle tourism zone of Liaoning Province, constituted by Shenyang, Dalian and Dandong, is the core region of Liaoning tourism system. This regional tourism cooperation has been raised for a long time, but has not made substantial progress as yet. In recent years, the strategic cooperation among them has been becoming urgent, along with the change of tourism competition models, as well as the desire for building a Northeast Asia tourist economy circle. Based on literature, this paper establishes a conceptual frame of regional tourism cooperation and applies it in the analysis of the strategic tourism cooperation of Liaoning Province＇s golden triangle zone. This paper firstly examines both qualifications and motives concerning with cooperation among the three cities, and believes that the biggest difficulties involve traditional ideas, administrative institutions, communications, economic performances, time constraints, and more overlap among their tourist markets. Then this paper continues to construct a cooperating mechanism, including participant arrangements, construction of operating mechanism and construction of assisting mechanism. At last, this paper proposes approaches to the strategic cooperation such as introducing Xiuyan County, strategic integration and developing differentiated and complemented tourism products.

关键词： regional tourism cooperation triangle tourism zone of Liaoning

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Recent advances of hydrogen production through particulate semiconductor photocatalytic overall water splitting

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Frontiers in Energy 2022年第1期16卷 49-63页

作者： zhi jiang Zhen YE Wenfeng SHANGGUAN Research Center for Combustion and Environment Technology Shanghai Jiao Tong UniversityShanghai 200240China

Solar energy-driven photocatalytic water splitting has been investigated for decades to produce clean and renewable green *** this paper,the cutting-edge research within the overall water splitting system is summarized from the one-step photocatalytic overall water splitting(POWS)system to the two-step system and the cocatalysts research in this *** addition,the photocatalytic reaction engineering study is also reviewed which is crucial for future *** mini-review provides a picture of survey of recent progress of relevant overall water splitting system,with particular attention paid to material system and mechanistic breakthroughs,and highlights the challenge and opportunity of the current system.

关键词： photocatalysis overall water splitting hydrogen

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A New Model for Quark Mass Matrix

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Chinese Physics Letters 2011年第6期28卷 71-73页

作者： jiang zhi-Wei Department of Modern Physics University of Science and Technology of ChinaHefei 230026

We study the status of S3,i.e.a slightly broken symmetry of quarks and propose a new model in which the S3 symmetry among the three generation up−quarks is slightly broken into the C2 symmetry while the S3 symmetry of... 详细信息

关键词： symmetry quark slightly

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The Same Distribution of Limit Cycles in a Hamiltonian System with Nine Seven-order Perturbed Terms

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Acta Mathematicae Applicatae Sinica 2008年第1期24卷 167-176页

作者： Tao jiang zhi-yan Yang School of Information Beijing Wuzi University Beijing 101149 China

Using qualitative analysis and numerical simulation, we investigate the number and distribution of limit cycles for a cubic Hamiltonian system with nine different seven-order perturbed terms. It is showed that these perturbed systems have the same distribution of limit cycles. Furthermore, these systems have 13, 11 and 9 limit cycles for some parameters, respectively. The accurate positions of the 13, 11 and 9 limit cycles are obtained by numerical exploration, respectively. Our results imply that these perturbed systems are equivalent in the sense of distribution of limit cycles. This is useful for studying limit cycles of perturbed systems.

关键词： Limit cycles bifurcation

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Effects of Branches on the Crystallization Kinetics of Polypropylene-gPolystyrene and Polypropylene-g-Poly(n-butyl acrylate) Graft Copolymers with Well-defined Molecular Structures

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Chinese Journal of Polymer Science 2014年第3期32卷 333-349页

作者： Lu Wang zhi-wei jiang Feng Liu zhi-jie Zhang 唐涛 State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences University of Chinese Academy of Sciences

Effects of branches on the crystallization kinetics of polypropylene-g-polystyrene （PP-g-PS） and polypropylene-g- poly（n-butyl acrylate）（PP-g-PnBA） graft copolymers with well-defined molecular structures were systematically investigated by DSC. The Avrami equation was used to analyze the isothermal crystallization process, while the analysis of nonisothermal crystallization process was based on the Jeziorny-modified Avrami model and Mo model. The kinetics results of isothermal and nonisothermal crystallization verified the peculiar effects of branches on the crystallization process of PP backbones in PP-g-PS and PP-g-PnBA graft copolymers： on one hand, the interaction between branches （n-n interaction between PS branches, or dipole-dipole interaction between PnBA branches） restrained the mobility and reptation ability of the PP backbones, which hindered the crystallization process; on the other hand, the heterogeneous nucleation effect resulting from the branched structure and fluctuation-assisted nucleation mechanism （caused by microphase separation between the PS or PnBA rich phase and the PP rich phase） became more pronounced with increasing branch length, which facilitated the crystallization process.

关键词： Polypropylene Polypropylene-g-polystyrene graft copolymer Polypropylene-g-poly(n-butyl acrylate) graftcopolymer Isothermal crystallization Nonisothermal crystallization.

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Surface modification mechanism of magnesium oxysulfate whiskers via wet chemical method

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Rare Metals 2016年第11期35卷 874-880页

作者： Yu-zhi jiang Chun-Yan Wang zhi-Shuo Xu Zhong-Yang Zhang College of Materials Science and Engineering Shenyang Ligong University，Shenyang 110159，China

Magnesium oxysulfate whisker（MOSW） was produced using magnesite and sulfuric acid as raw materials by hydrothermal method and further modified by taking zinc stearate as modifier via wet chemical *** infiuences of the amount of modifier, slurry concentration, modification duration, modification temperature and the stirring rate on the surface modification were investigated. The effects of surface modification in functional groups, morphology and electron binding energies of surface elements of MOSW were characterized by Fourier transform infrared spectroscopy（FT-IR）, scanning electron microscopy（SEM） and X-ray photoelectron spectroscopy（XPS）. The mechanism of modification was analyzed by studying the microstructure model of the surface of MOSW, which was modified by zinc stearate. The results show that the coordination is generated by the Mg element and O in carboxylic ion of modifier, and the chemical bond could be obtained by modification. Moreover, the surface of MOSW bonds the molecules of zinc stearate, and it becomes rough. Then, the hydrophobicity of MOSW is also improved significantly. In addition, the 1s electron binding energies of Mg and O on the surface of MOSW decrease by1.2 and 0.2 eV, respectively.

关键词： Magnesium oxysulfate whiskers Surface modi?cation Modi?ed mechanism Structural model

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A comprehensive review of cavitation in valves:mechanical heart valves and control valves

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Bio-Design and Manufacturing 2019年第2期2卷 119-136页

作者： Jin-yuan Qian zhi-xin Gao Cong-wei Hou zhi-jiang Jin Institute of Process Equipment College of Energy EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027People’s Republic of China

Valves are widely used in various working conditions for their flow control functions,and the cavitation inside valves has been investigated owing to its harm to the valve itself and the connecting downstream *** paper presents a comprehensive review of the progress that has been achieved in the past years about cavitation in valves including both mechanical heart valves and control *** review is divided in the following parts,namely the location where there is a high possibility of the occurrence of cavitation,the parameters that affect cavitation intensity,and the methods to minimize cavitation *** should be noticed that although simulation has been widely used,advanced experiments are still needed in order to obtain accurate analysis of cavitation in valves and the cavitation model still needs to be improved.

关键词： Cavitation Mechanical heart valves Control valves

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Numerical investigation on the flow and power of small-sized multi-bladed straight Darrieus wind turbine

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第9期8卷 1414-1421页

作者： jiang zhi-chao DOI Yasuaki ZHANG Shu-you College of Mechanical and Energy Engineering Zhejiang University Hangzhou 310027 China Hangshen Holding Group Co.. Ltd Hangzhou 311234 China Graduate School of Engineering. Hiroshima UniversiO＇ Higashi-hiroshima Hiroshima 739-852 7 Japan

Straight Darrieus wind turbine has attractive characteristics such as the ability to accept wind from random direction and easy installation and maintenance. But its aerodynamic performance is very complicated,especially for the existence of dynamic stall. How to get better aerodynamic performance arouses lots of interests in the design procedure of a straight Darrieus wind turbine. In this paper,mainly the effects of number of blades and tip speed ratio are discussed. Based on the numerical investigation,an assumed asymmetric straight Darrieus wind turbine is proposed to improve the averaged power coefficient. As to the numerical method,the flow around the turbine is simulated by solving the 2D unsteady Navier-Stokes equation combined with continuous equation. The time marching method on a body-fitted coordinate system based on MAC (Marker-and-Cell) method is used. O-type grid is generated for the whole calculation domain. The characteristics of tangential and normal force are discussed related with dynamic stall of the blade. Averaged power coefficient per period of rotating is calculated to evaluate the eligibility of the turbine.

关键词： Small-sized Straight Darrieus wind turbine Multi-bladed Power coefficient

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Crystallization Behavior and Dynamic Mechanical Properties of Poly(ε-caprolactone)/Octaisobutyl-Polyhedral Oligomeric Silsesquioxanes Composites Prepared via Different Methods

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Chinese Journal of Polymer Science 2020年第2期38卷 158-163,I0006页

作者： Si-Qi Teng zhi-Guo jiang Zhao-Bin Qiu State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology

Two octaisobutyl-polyhedral oligomeric silsesquioxanes(oib-POSS)reinforced biodegradable poly(ε-caprolactone)(PCL)composites were prepared via two different methods,i.e.,melt compounding and solution casting,which were named as m PCL/oib-POSS and s PCL/oibPOSS,respectively,in this ***-POSS dispersed finely in both composites;moreover,oib-POSS aggregates were larger in m PCL/oib-POSS than in s PCL/*** the different preparation methods,oib-POSS obviously promoted the crystallization of PCL,especially in s PCL/oib-POSS,but did not modify the crystal structure of *** storage moduli of PCL were improved significantly in both ***/oib-POSS composites with enhanced crystallization behavior and improved dynamic mechanical properties were successfully prepared through both methods;moreover,the solution casting method was more effective than the melt compounding method.

关键词： Poly(ε-caprolactone) POSS Crystallization

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