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Journal of Environmental Sciences 2015年第2期27卷 1-7页

作者： Zhao-hui Wang Yu Liang college of Life Science and Technology Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education InstitutesJinan University

The growth and alkaline phosphatase ac.ivity（APA） of two raphidophyceae species chattonella marina and Heterosigma akashiwo were investigated in response to P-limitation and subsequent addition of dissolved inorganic phosphorus（DiP, Na H2PO4） and two dissolved organic phosphorus（DOP） compounds： guanosine 5-monophosphate（GMP） and triethyl phosphate（TEP）. APA levels increased greatly after P-starvation as the decrease of the cellular phosphorus quotes（Qp）. c. marina responded to P-limitation quickly and strongly, with 10-fold increase in APA within 24 hr after P-starvation. The larger difference between maximal and minimal QP values in c. marina indicated its high capacity in P storage. APA of H. akashiwo was maximally enlarged about 2.5 times at 48 hr of P-starvation. After the addition of nutrients, cell numbers of c. marina increased in all treatments including the P-free culture, demonstrating the higher endurance of c. marina to P-limitation. However, those of H. akashiwo increased only in DiP and GMP cultures. APA increased only after the addition of the monophosphate ester GMP. The results suggest that quick responses of c. marina to P-limitation, high capacity in P storage as well as endurance for P-depletion provide this species an ecological advantage in phytoplankton community competition under DiP-limited conditions.

关键词： Alkaline phosphatase Dissolved inorganic phosphorus Dissolved organic phosphorus Growth Phytoplankton

Globally coupled chaotic Maps with constant Force

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communications in Theoretical Physics 2008年第3期49卷 665-668页

作者： Li Jing-hui Faculty of Science P.O. Box 58 Ningbo University Ningbo 315211 China ccAST （World Laboratory） P.O. Box 8730 Beijing 100080 China

We investigate the motion of the globally coupled maps （logistic map） with a constant force. it is shown that the constant force can cause multi-synchronization for the globally coupled chaotic maps studied by us.

关键词： chaotic map synchronization

Preparation and Electrochemical Properties of the Pd-modified cu Electrode for Nitrate Reduc.ion in Water

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c.inese chemical Letters 2006年第1期17卷 61-64页

作者： Ying WANG Jiu hui QU hui Juan LiU State Key Laboratory of Environmental Aquatic chemistry Research Center for Eco-Environmental Sciences Beijing 100085 Graduate School of the c.inese Academy of Sciences Beijing 100039

The Pd-modified cu （Pd/cu） electrodes for nitrate reduc.ion were prepared using electro-deposition method at different potentials, compared with other different electrodes so far studied in our work （cu, Sn/cu and Pd/Ti electrode） using cyc.ic voltammetry method, Pd/cu electrode showed the highest electrocatalytic capacity of nitrate reduc.ion. it was found that at more negative electrode potential the smaller Pd particles formed on the cu electrode, which was beneficial to the nitrate reduc.ion. With increasing deposition amount of Pd, the capacity of nitrate reduc.ion increased. Too rich Pd, however, has a negative influence on the capacity of nitrate reduc.ion. in our study, the maximum nitrate reduc.ion current was 2.07 mA/cm^2, when electrodeposition potential of Pd was -0.3 V and deposition amount was 0.9 c.

关键词： Nitrate reduc.ion electro-deposition potentials water treatment.

Photocatalytic degradation of Acid Blue 62 over cuO-SnO_2 nanocomposite photocatalyst under simulated sunlight

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Journal of Environmental Sciences 2007年第9期19卷 1141-1145页

作者： XiA hui-li ZHUANG hui-sheng ZHANG Tao XiAO Dong-chang college of Environmental Science and Engineering Donghua University Shanghai 201620 China.

The novel cuO-SnO2 nanocomposite oxide photocatalysts were prepared by simple co-precipitation method, and characterized by X- ray diffrac.ion, transmission electron microscopy, N2 adsorption-desorption measurement and UV-Vis diffuse reflectance spectroscopy. The photocatalytic ac.ivities of cuO-SnO2, evaluated using the photodegradation of Acid Blue 62 as a probe reac.ion under the irradiation of Xenon light, were also found to be related to the calcination temperature and the molar ratio of cu to Sn. The maximum photocatalytic ac.ivity of the cuO-SnO2 photocatalyst was observed to be calcined at 500~c for 3 h （the molar ratio of cu to Sn was 1：1） due to the sample with good crystallization and high surface area. it also showed much higher photocatalytic ac.ivity in treatment dye wastewater under simulated sunlight irradiation compared to Degussa P25 TiO2.

关键词： photocatalysis copper oxide tin dioxide Acid Blue 62 (AB62) simulated sunlight

Flux induced by Multiplicative Dichotomous Noise

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communications in Theoretical Physics 2008年第1期49卷 171-173页

作者： Li Jing-hui Faculty of Science P.O. Box 58 Ningbo University Ningbo 315211 China

The transport of particles induced by multiplicative dichotomous noise for a system is investigated. The stationary probability current is derived. it is shown that, for the system studied by us, the spatial asymmetry... 详细信息

关键词： transport dichotomous noise flux probability current

copper-catalyzed α-selec.ive c–H trifluoromethylation of acrylamides with TMScF3

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c.inese chemical Letters 2019年第5期30卷 969-972页

作者： Shang-Zheng Sun hui Xu hui-Xiong Dai Department of Medicinal chemistry Shanghai Institute of Materia MedicaUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 201203China Department of chemistry Innovative Drug Research CenterShanghai UniversityShanghai 200444China

A copper-catalyzedα-selec.ive c–H trifluoromethylation of acrylamides with TMScF3 is desc.ibed.A wide range of arenes and heteroarenes at theβ-position of acrylamides are compatible with the reac.ion,affording the corresponding(E)-trifluoromethylated products in moderate to good *** reac.ion proceeded fast and can be completed within 30 min.

关键词： α-Selec.ivity c–H trifluoromethylation copper Acrylamides Heterocycle

New regularization method and iteratively reweighted algorithm for sparse vector recovery

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Applied Mathematics and Mechanics(English Edition) 2020年第1期41卷 157-172页

作者： Wei ZHU hui ZHANG Lizhi cHENG Post-doctoral Research Station of Statistics School of Mathematics and Computational ScienceXiangtan UniversityXiangtan 411105Hunan ProvinceChina Department of Mathematics National University of Defense TechnologyChangsha 410073China

Motivated by the study of regularization for sparse problems,we propose a new regularization method for sparse vector *** derive sufficient conditions on the well-posedness of the new regularization,and design an iterative algorithm,namely the iteratively reweighted algorithm(iR-algorithm),for efficiently computing the sparse solutions to the proposed regularization *** convergence of the iR-algorithm and the setting of the regularization parameters are analyzed at ***,we present numerical examples to illustrate the features of the new regularization and algorithm.

关键词： regularization method iteratively reweighted algorithm(iR-algorithm) sparse vector recovery

Appearance of Stochastic Resonance in Protein Motor System

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communications in Theoretical Physics 2007年第5期47卷 861-864页

作者： Li Jing-hui Faculty of Science Ningbo University Ningbo 315211 China

A protein motor system driven by sine electric field is investigated. The signal-to-noise ratio （SNR） is derived in the adiabatic limit. The phenomenon of stochastic resonance is found for this protein motor system.

关键词： stochastic resonance protein motor

Probability Density and Statistical Properties for a Three-State Markovian Noise and Escape of Particles for a System Driven by This Noise

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communications in Theoretical Physics 2008年第8期50卷 391-395页

作者： Li Jing-hui Faculty of Science P.O. Box 58 Ningbo University Ningbo 315211 China

A three-state Markovian noise is *** probability density and statistical properties are obtained. Escape of particles for a system with potential barrier only driven by this noise is *** is shown that,in some circumstances,this noise can make the particles escape over the potential barrier;but in other circumstances,it cannot. Resonant ac.ivation phenomenon appears for the system considered by us.

关键词： probability density noise escape

Stochastic Huge-Resonance caused by coupling for a Globally coupled Linear System

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communications in Theoretical Physics 2009年第2期51卷 265-269页

作者： Li Jing-hui Faculty of Science Ningbo University P.O. Box 58 Ningbo 315211 China

in the paper, we investigate a globally coupled linear system with finite subunits subject to temporal periodic force and with multiplicative dichotomous noise. it is shown that, the global coupling among the subunits can hugely enhance the phenomenon of SR for the amplitude of the average mean field as the func.ions of the transition rate of the noise and that as the func.ion of the frequency of the signal respec.ively.

关键词： stochastic resonance globally coupled linear system dichotomous noise