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Chinese Journal of Natural Medicines 2018年第1期16卷 1-9页

作者： XU Jing-Yuan zhu Yan YI Ze wu Gang XIE Guo-Yong QIN Min-Jian Department of Resources Science of Traditional Chinese Medicines State Key Laboratory of Natural Medicines China Pharmaceutical University

"wu zhu yu", which is obtained from the dried unripe fruits of Tetradium ruticarpum(A. Jussieu) T. G. Hartley, has been used as a traditional Chinese medicine for treatment of headaches, abdominal colic, and hypertension for thousands of years. The present study was designed to assess the molecular genetic diversity among 25 collected accessions of T. ruticarpum(wu zhu yu in Chinese) from different areas of China, based on inter-primer binding site(i PBS) markers and inter-simple sequence repeat(ISSR) markers. Thirteen ISSR primers generated 151 amplification bands, of which 130 were polymorphic. Out of 165 bands that were amplified using 10 iPBS primers, 152 were polymorphic. The iPBS markers displayed a higher proportion of polymorphic loci(PPL = 92.5%) than the ISSR markers(PPL = 84.9%). The results showed that T. ruticarpum possessed high loci polymorphism and genetic differentiation occurred in this plant. The combined data of iPBS and ISSR markers scored on 25 accessions produced five clusters that approximately matched the geographic distribution of the species. The results indicated that both iPBS and ISSR markers were reliable and effective tools for analyzing the genetic diversity in T. ruticarpum.

关键词： Genetic diversity Tetradium ruticarpum iPBS Retrotransposon ISSR

Study on impact factors of tracer gas method in investigations of gaseous pollutant transport and building ventilation

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Building Simulation 2023年第3期16卷 413-426页

作者： Naiping Gao Ruge Wang Yan wu zhu wu School of Mechanical Engineering Tongji UniversityShanghai201804China Baoye Group Co.LTD Zhejiang312000China

Building ventilation is essential to discharge indoor pollutants and improve indoor air quality for occupant *** gas method is an efficient way in the field of building ventilation to measure ventilation rate and to evaluate the ventilation *** shows notable deviation of measured ventilation rate using different tracer *** the present study,CFD simulations are carried out to analyze He-,CO_(2)-and SF_(6)-based tracer gas *** effects of tracer gas density and release rate on the concentration distribution and ventilation effectiveness are *** application scenarios of different ventilation rates and airflow distribution forms are *** results show that the deviation of ventilation effectiveness evaluated by different tracer gases can be above 2-4 times,and the error is introduced by non-passive *** tracer gas dispersion is passive or not depends on the relative importance of density difference driven mass transfer to forced convection mass transfer,which is due to the combined effects of density difference,release rate,and indoor airflow velocity,and can be judged by a dimensionless number θ.Under the geometry and ventilation settings in the present study,the critical value of θ is 1.0 for the error range of 5%,and 2.0 for the error range of 10%.When θ is below the critical value,the gas transport is passive and dominated by the indoor ventilation airflow.A release of tracer gas with smaller release rate and smaller density difference into a stronger indoor airflow behaves more *** tracer gas tends to significantly overestimate the performance of upper supply and lower exhaust ventilation,and lighter tracer gas aggravates the overestimation of the performance for lower supply and upper exhaust *** mechanical ventilation rooms with air change rate of 3.0-6.0 h^(−1),a continuous release of tracer gas SF_(6),CO_(2) or He with release rate above 8 mg/s or source concentrati

关键词： building ventilation tracer gas method passive dispersion non-passive dispersion ventilation effectiveness

Thermal insulation design of subsea vertical X-mas tree

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Petroleum Science 2021年第4期18卷 1182-1194页

作者： Xin Rong Hong-wu zhu College of Mechanical and Transportation Engineering China University of PetroleumBeijing102249China

Temperature drop is commonly observed in subsea vertical X-mas trees during *** presence of a huge temperature difference between internal crude oil and external seawater can cause severe equipment degradation of the oil flow channel(e.g.,hydrate precipitation),which can block the oil flow channel and interrupt the production *** most vulnerable parts of a subsea vertical X-mas tree tend to be components with high convective heat transfer rates,such as production modules and short *** proposed an innovative approach for the insulation design of underwater equipment under a shutdown ***,we obtained a heat transfer analysis of the tree under working conditions through computational fluid dynamics to ascertain the initial temperature condition for an unsteadystate ***,we investigated the unsteady heat transfer characteristics of the tree with an insulation layer in the shutdown state and derived the relationships between insulation duration and thickness by data *** used data analysis to identify the relationship between insulation duration and ***,we derived the empirical formula of insulation thickness for underwater equipment given the effect of environmental factors on the heat preservation *** performed the experiment with an oil pipeline,and the results showed that the internal oil of the equipment did not hydrate within 8 h under the shutdown condition with insulation layers.

关键词： Subsea vertical X-mas tree Thermal insulation design Unsteady heat-transfer analysis Computational fluid dynamics

Recent advances in visible-light-driven organic reactions

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National Science Review 2017年第3期4卷 359-380页

作者： Qiang Liu Li-zhu wu State Key Laboratory of Applied Organic Chemistry Lanzhou University Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of Sciences

In recent years, visible-light-driven organic reactions have been experiencing a significant renaissance in response to topical interest in environmentally friendly green chemical synthesis. The transformations using inexpensive, readily available visible-light sources have come to the forefront in organic chemistry as a powerful strategy for the activation of small molecules. In this review, we focus on recent advances in the development of visible-light-driven organic reactions, including aerobic oxidation, hydrogen-evolution reactions, energy-transfer reactions and asymmetric reactions. These key research topics represent a promising strategy towards the development of practical, scalable industrial processes with great environmental benefits.

关键词： visible light catalysis synthesis photocatalyst aerobic oxidation hydrogen evolution energy transfer asymmetric photoreaction

A Survey of Newtonian Core-Shell Systems with Pseudo High Order Symplectic Integrator and Fast Lyapunov Indicator

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Chinese Journal of Astronomy and Astrophysics 2007年第4期7卷 601-610页

作者： Jun-Fang zhu Xin wu Da-zhu Ma Department of Physics Nanchang University Nanchang 330031

Newtonian core-shell systems, as limiting cases of relativistic core-shell models under the two conditions of weak field and slow motion, could account for massive circumstellar dust shells and rings around certain types of star remnants. Because this kind of systems have Hamiltonians that can be split into a main part and a small perturbing part, a good choice of the numerical tool is the pseudo 8th order symplectic integrator of Laskar ＆ Robutel, and, to match the symplectic calculations, a good choice of chaos indicator is the fast Lyapunov indicator （FLI） with two nearby trajectories proposed by wu, Huang ＆ Zhang. Numerical results show that the FLI is very powerful when describing not only the transition from regular motion to chaos but also the global structure of the phase space of the system.

关键词： celestial mechanics - chaos - methods: numerical

An advanced higher-order theory for laminated composite plates with general lamination angles

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Acta Mechanica Sinica 2011年第5期27卷 720-729页

作者： Zhen wu Hong zhu Wan-Ji Chen Key Laboratory of Liaoning Province forComposite Structural Analysis of Aerocraft and Simulation Shenyang Aerospace University 110136 Shenyang China

This paper proposes a higher-order shear deformation theory to predict the bending response of the laminated composite and sandwich plates with general lamination *** proposed theory a priori satisfies the continuity conditions of transverse shear stresses at ***,the number of unknown variables is independent of the number of *** first derivatives of transverse displacements have been taken out from the inplane displacement fields,so that the C 0 shape functions are only required during its finite element *** to C 0 continuity requirements,the proposed model can be conveniently extended for implementation in commercial finite element *** verify the proposed theory,the fournode C 0 quadrilateral element is employed for the interpolation of all the displacement parameters defined at each nodal point on the composite *** results show that following the proposed theory,simple C 0 finite elements could accurately predict the interlaminar stresses of laminated composite and sandwich plates directly from a constitutive equation,which has caused difficulty for the other global higher order theories.

关键词： Laminated and sandwich composites Higherorder theory C 0 continuity requirement Transverse shear stress

Cohomology of the Schrdinger Algebra S(1)

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Acta Mathematica Sinica,English Series 2014年第12期30卷 2054-2062页

作者： Yue zhu wu Xiao Qing YUE Lin Sheng zhu Department of Mathematics Changshu Institute of Technology Department of Mathematics Tongji University

We explicitly compute the first and second cohomology groups of the SchrSdinger algebra S（1） with coefficients in the trivial module and the finite-dimensional irreducible modules. We also show that the first and second cohomology groups of S（1） with coefficients in the universal enveloping algebras U（S（1））（under the adjoint action） are infinite dimensional.

关键词： Schrodinger algebra first cohomology groups second cohomology groups

Quantum Size Effects on Two Electrons and Two Holes in Double-Layer Quantum Dots

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Communications in Theoretical Physics 2002年第7期38卷 99-102页

作者： XIE Wen-Fang zhu wu Department of Physics Guangzhou University Guangzhou 510405 China Department of Physics Guangzhou University Guangzhou 510405 China

We propose a procedure to solve exactly the Schrodinger equation for a system of two electrons and two holes in a double-layer quantum dot by using the method of few-body physics. The features of the low-lying spectra have been deduced based on symmetry. The binding energies of the ground state are obtained as a function of the electron-to-hole mass ratio σ for a few values of the quantum dot size.

关键词： two-electron and two-hole system, quantum dot, method of few-body physics

Fractal-like Kinetic Characteristics of Coalbed Methane Hydrate Dissociation at Normal Pressure

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Chinese Journal of Chemistry 2011年第1期29卷 21-26页

作者： Xu, Feng wu, Qiang zhu, Lihua School of Safety Engineering & Technology Heilongjiang Institute of Science & Technology Harbin Heilongjiang 150027 China

Surface modality of coalbed methane hydrate and fractal-like kinetic characteristics of the hydrate dissociation at normal pressure have been studied by using fractal geometry theory. The results show that the surface modality of coalbed methane hydrate has fractal characteristic, and the dissociation kinetics of coalbed methane hydrate is fractal-like. Moreover, a new kinetic model for coalbed methane hydrate dissociation was proposed, and its reliability was validated.

关键词： coalbed methane hydrate dissociation kinetic normal pressure fractal

Identification of miRNAs and their targets in tea (Camellia sinensis)

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第10期14卷 916-923页

作者： Quan-wu zhu Yao-ping LUO Institute of Tea Science Zhejiang University

MicroRNAs(miRNAs) are endogenous small RNAs playing a crucial role in plant growth and development,as well as stress *** them,some are highly evolutionally conserved in the plant kingdom,this provide a powerful strategy for identifying miRNAs in a new ***(Camellia sinensis) is one of the most important commercial beverage crops in the world,but only a limited number of miRNAs have been *** the present study,a total of 14 new *** miRNAs were identified by expressed sequence tag(EST) analysis from 47 452 available *** *** miRNAs potentially target 51 mRNAs,which can act as transcription factors,and participate in stress response,transmembrane transport,and signal *** of gene ontology(GO),based on these targets,suggested that 37 biological processes were involved,such as oxidation-reduction process,stress response,and *** Encyclopedia of Genes and Genomes(KEGG) pathway enrichment analysis inferred that the identified miRNAs took part in 13 metabolic *** study will help further understanding of the essential roles of miRNAs in *** growth and development,and stress response.

关键词： MicroRNA(miRNA) Camellia sinensis Tea Gene ontology Pathway