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Journal of Integrative Agriculture 2012年第10期11卷 1665-1674页

作者： XU You-ping CHEN Hui-ying ZHOU xin CAI xin-zhong Institute of Biotechnology College of Agriculture and Biotechnology Zhejiang University Center of Analysis and Measurement Zhejiang University Key Laboratory of Molecular Biology of Crop Pathogens and Insects Ministry of Agriculture/Zhejiang University

Nonhost resistance is a phenomenon that enables plants to protect themselves against the majority of potential pathogens, and thus has a great potential for application in plant protection. We recently found that CfHNNI1 （for Cladosporium fulvum host and nonhost plant necrosis inducer 1） is an inducer of plant hypersensitive response （HR） and nonhost resistance. In this study, its functional mechanism was analyzed. CfHNN11 was a single copy gene in C. fulvum genome. The functional ORF of the CfHNN11 cDNA was ATG3-TAG780, which showed homology with genes encoding bZIP transcription factors. The functional ORF included in frame an inner one ATG273-TAG780, which was sufficient to induce HR in plants. CfIINN11 induced plant HR in a dose-dependent manner. CfHNNIl-induced necrosis in NahG transgenic tomato plants was significantly stronger than that in their wild type controls. However, the necrosis in Nr and defl tomato mutants was similar to that in their corresponding wild type plants. These data demonstrate that induction of HR and nonhost resistance by CfHNNI1 is negatively regulated by salicylic acid signalling pathway but independent of ethylene and jasmonic acid signalling pathways.

关键词： CfHNNI1 Cladosporium fulvum ethylene hypersensitive response jasmonic acid nonhost resistance salicylic acid

Isolation and Identification of New Impurities in Nomegestrol Acetate

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Chemical Research in Chinese Universities 2009年第5期25卷 653-656页

作者： YANG zhong-duo ZHANG Xu LI Tao LI Yuan-chao WANG You-fu School of Life Science and Engineering Lanzhou University of Technology Lanzhou 730050 P. R. China Shanghai Institute ofMateria Medica Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 201203 P. R. China The 2nd Branch Factory of Xianju Pharmaceutical Factory Xianju 317300 P. R. China State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 P. R. China

Three new and five known steroidal compounds as impurities in nomegestrol acetate（I） were isolated from the enriched mother liquor via various chromatographic methods. Their structures were elucidated by spectrometric analysis and single-crystal X-ray diffraction analysis. New compounds were characterized as 17a-hydroxyl-3-oxoes- trane-5β, 17-dicarbonitrile（l）, 4-ethyl- 17a-hydroxyl-3-oxoestr-4-en- 17-carbonitrile（2）, 4-ethylestr-4-en-3,17-dione（3）. The ^13C NMR data of known estrane derivatives（4--7） were also reported first time in this paper. The study may be helpful to identifing and characterizing all the impurities that are present at a level of 0.1% and be useful in the quality control of the production ofnomegestrol acetate.

关键词： Steroid Nomegestrol acetate Estrane derivative

Towards quantum entanglement of micromirrors via a two-level atom and radiation pressure

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Frontiers of physics 2018年第5期13卷 259-269页

作者： Zhi-Rong zhong xin Wang Wei Qin Fujian Key Laboratory of Quantum Information and Quantum Optics College of Physics and Information Engineering Fuzhou University Fuzhou 350116 China Institute of Quantum Optics and Quantum Information School of Science Xi'an Jiaotong University Xi'an 710049 China Quantum Physics and Quantum Information Division Beijing Computational Science Research Center Beijing 100193 China

We propose a method to entangle two vibrating microsize mirrors （i.e., mechanical oscillators） in a cavity optomechanieal system. In this scheme, we discuss both the resonant and large-detuning conditions, and show that the entanglement of two mechanical oscillators can be achieved with the assistance of a two-level atom and cavity-radiation pressure. In the resonant case, the operation time is relatively short, which is desirable to minimize the effects of decoherence. While in the large-detuning case, the cavity is only virtually excited during the interaction. Therefore, the decay of the cavity is effectively suppressed, which makes the efficient decoherence time of the cavity to be greatly prolonged. Thus, we observe that this virtual-photon process of microscopic objects may induce the entanglement of macroscopic objects. Moreover, in both cases, the generation of entanglement is deterministic and no measurements on the atom and the cavity are required. These are experimentally important. Finally, the decoherence effect and the experimental feasibility of the proposal are briefly discussed.

关键词： cavity optomechanical system atomic entanglement

Mass to light ratio of galaxies and gravitational lensing

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Research in Astronomy and Astrophysics 2013年第9期13卷 1041-1051页

作者： Nan Li Ran Li xin-zhong Er National Astronomical Observatories Chinese Academy of Sciences

We investigate the potential of constraining the mass to light ratio of field galaxies using weak lensing shear and flexions. A suite of Monte Carlo simulations are used to generate weak lensing observations with different noise models. Using mock data, we find that the inclusion of flexions can improve the estimate of foreground halo parameters, but the details are strongly dependent on noise in the model. In the intrinsic noise limit, both shear and flexions are promising tools to study the mass to light ratio of galaxies. However, if the noise model of flexions follows the form described by Rowe et al., there is only - 5% improvement in the constraints even with next generation lensing observations.

关键词： cosmology: dark matter -- galaxies: halos -- gravitational lensing

Thermoelectric properties of (GeTe)_(1-x)[(Ag_(2)Te)_(0.4)(Sb_(2)Te_(3))_(0.6)]_(x) alloys

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Rare Metals 2022年第3期41卷 921-930页

作者： Hong-Xia Liu xin-Yue Zhang zhong-Lin Bu Wen Li Yan-zhong Pei School of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Laboratory of Magnetic and Electric Functional Materials and the Applications The Key Laboratory of Shanxi ProvinceTaiyuan 030024China Interdisciplinary Materials Research Center School of Materials Science and EngineeringTongji UniversityShanghai 201804China

The(GeTe)_(x)(AgSbTe_(2))_(100-x)alloys(TAGS-x)have been demonstrated as a promising p-type candidate for thermoelectric applications,attracting numerous atten-tions on the advancements of thermoelectric *** of carrier concentration for optimizing ther-moelectric performance in TAGS can be achieved by varying the ratio of Ag to Sb,and the Ag/Sb ratio of~2/3 has been proven as the optimal ***,this work focuses on the systematic investigation on ther-moelectric properties of(GeTe)_(1-x)[(Ag_(2)Te)_(0.4)(Sb_(2)Te_(3))_(0.6)]_(x) *** crystal structure for the alloys transfers from rhombohedral to cubic at room temperature as x≥*** evolution of band parameter is estimated using a single parabolic band(SPB)model with acoustic phonon *** density of states effective mass increases with x increasing,which leads to an enhancement of Seebeck coefficient along with a reduction in Hall mobility due to the additional carrier scattering by point ***-while,the lattice thermal conductivity of lower than~0.7 W·m^(-1)·K^(-1) in the entire temperature range and the lowest one of only 0.45 W·m^(-1)·K^(-1) is achieved due to additional phonon scattering by point *** a result,a peak thermoelectric figure of merit(zT)of~1.80 and an average one of~1.37 in 300–800 K are realized in non-stoichiometric TAGS alloys here.

关键词： Thermoelectric Tellurium-antimonygermanium-silver(TAGS) Crystal structure Lattice thermal conductivity

A case report of significant progression after FFR-guided deferred PCI

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Journal of Geriatric Cardiology 2020年第10期17卷 649-652页

作者： Cheng-duo ZHANG xin-Ye XU Li-Jun GUO Wei GAO Department of Cardiology Peking University Third HospitalNHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory PeptidesBeijingChina

In recent years,the use of coronary functional evaluation derived by fractional flow reserve(FFR)to guide percutaneous coronary intervention(PCI)treatment has been recommended by several mainstream ***,FFR>0.80 in cor... 详细信息

关键词： Delayed lesion intervention Fractional flow reserve Intermediate lesion Intravascular imaging Unstable plaques

Numerical Simulation and Sensitivity Analysis of Parameters for Multistand Roll Forming of Channel Section With Outer Edge

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Journal of Iron and Steel Research International 2009年第1期16卷 32-37页

作者： ZENG Guo LAI xin-min YU zhong-qi LIN zhong-qin School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China State Key Laboratory of Mechanical System and Vibration Shanghai 200240 China

Cold roll forming is a high production but complex metal forming process under the conditions of coupled effects with multi-factor. A new booting finite element method （FEM） model using the updated Lagrangian （IAL） method for multistand roll forming process is developed and validated. Compared with most of the literatures related to roll forming simulation, the new model can take the roll rotation into account and is well suited for simulating multistand roll forming. Based on the model, the process of a channel section with outer edge formed with twelve passes is simulated and the sensitivity analysis of parameters is conducted with orthogonal design combined FEM model. It is found that the multistand roll forming process can be efficiently analyzed by the new booting model, and sensitivity analysis shows that the yield strength plays an important role in controlling the quality of the products.

关键词： cold roll forming multistand roll forming sensitivity FEM model

Polybenzoxazine/organosilicon composites with low dielectric constant and dielectric loss

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Chinese Journal of Chemical Engineering 2023年第12期64卷 241-249页

作者： Manlin Yuan xin Lu Xiaoyun Ma Hao Lin Angui Lu Liyan Shao zhong xin State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

The evolution of electronic communication technology raises higher requirements for low dielectric constant(low-k)*** this,a benzoxazine functional organosilicon(HP-aptes)with dense Si—O—Si crosslinking networks and large sterically hindered tert-butyl groups was prepared by the sol–gel ***,a series of polybenzoxazine composites(PPHP)were prepared from intrinsically low dielectric constant bis-functional benzoxazine monomer(P-aptmds)and *** double crosslinking networks of polybenzoxazine and organosilicon further increased the crosslinking density and decreased the dipole density of composites,which endowed the composites with enhanced low-k *** the content of HP-aptes is 30%(mass),the crosslinking density was 2.05×10^(-3)mol·cm^(-3),while that of PP-aptmds was 3.31×10^(-3)mol·cm^(-3).In addition,the dielectric constant and dielectric loss of PPHP composite at 1 MHz could reach 2.61 and 0.0056,respectively.

关键词： Polybenzoxazine Organosilicon Composite Dielectric constant

EXPERI MENTAL INVESTIGATION INTO HOT WATER SLOT JETS WITH NEGATIVELY BUOYANCYIN CROSS FLOW

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Journal of Hydrodynamics 2005年第4期17卷 412-417页

作者： YANG zhong-hua HUAI Wen-xin DAI Hui-chao State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan 430072 China

An experiment was conducted to examine the near-field behavior of negatively buoyant planar jets in flowing environment. Hot water jet was projected downwards at dif fercnt angles from a slot into a uniform cross flow. Micro Acoustic Doppler Velocimeter （Micro ADV） system is used to measure the velocity and turbulent fluxes of Reynolds stresses. The whole field temperatures were measured with fast response thermocouples. Pure jets experiments were made also to study the effect of buoyancy in negatively buoyant jets. It is found that the influenced area of hot jets is larger than which of pure jets when the jet angle is 90° and the influenced area of hot jets is smaller than which of pure jets when the jet angle is 45°. The difference is not obvious at 60° angle jets. This means that the rising of temperature has effect not only on negatively buoyancy, but also on the intensity of turbulence. The contrast of these two influences dominates the trend of jet flow.

关键词： negatively buoyant planar jets Micro Acoustic Doppler Velocimeter (Micro ADV) Reynolds stresses

Optimization of monitoring the stability of surrounding rock in a metal mine

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International Journal of Minerals,Metallurgy and Materials 2009年第4期16卷 359-367页

作者： Bo Song Min zhong xin Dong Pei-fu Wang School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China Zhaojin Mining Industry Limited Company Shandong 265400 China

Through analyzing the failure mechanics of rock under blasting effect, the optical fiber sensing system was used to monitor the strain of surrounding rock under blasting effect. Combined with practical exploration, the stability of surrounding rock was computed by numerical simulation using the blasting wave obtained from the site. According to the change regularities of displacement, stress, acceleration, and velocity of tunnels before and after explosion, the layout of key monitoring points was optimized. When disposed the monitoring position of sensors, the regular points should be considered to use as key points and the periodical monitor should be a part of the long-term monitor. In practical application, considering the geology condition in site, monitor points should be added on the area with joints and faults to assure the integrity of monitor data and the preciseness of decision.

关键词： metal mine monitoring optical fiber sensor numerical simulation blasting vibration