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Chinese Chemical Letters 2017年第3期28卷 633-641页

作者： yong Zhu Zhi-Shan bai Hua-Lin Wang State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and TechnologyShanghai 200237China

An improved biosorbent of thiourea modified chitosan microsphere（TMCM） with high specific surface,favorable mechanical strength and excellent adsorption performance had been synthesized via microfluidic technology. Polyethylene glycol was used as a significant component added in aqueous solution of chitosan to produce such microspheres through droplets forming, chemical crosslinking and pores creating. For the improvement of adsorption capacity, thiourea was considered as an excellent choice in increasing amino functional group by graft modification. The SEM, FTIR and EDS were employed to detect distinct features of TMCM. Copper（Ⅱ） was used to test the adsorption performance of TMCM. The experimental results indicated that TMCM exhibited higher adsorption capacity（q_e= 60.6 mg g_（-1）） and faster adsorption rate than that non-modified chitosan microsphere（NMCM）.The adsorption kinetic was described well by the pseudo-second order kinetic model, which suggested that chemical adsorption along with electrons transferring was dominant in adsorption process.

关键词： Thiourea modification Chitosan microsphere High specific surface area Microfluidic technology Adsorption

Numerical Modeling of Local Scour Around Hydraulic Structure in Sandy Beds by Dynamic Mesh Method

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Journal of Ocean University of China 2017年第5期16卷 738-746页

作者： FAN fei LIANG Bingchen bai Yuchuan ZHU Zhixia ZHU Yanjun State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin University Tianjin 300000 P. R. China Shandong Province Key Laboratory of Ocean Engineering Ocean University of China Qingdao 266100 P. R. China Jiangsu Province Water Transport Engineering Technology Research Center Nanjing 21000 P. R. China

Local scour, a non-negligible factor in hydraulic engineering, endangers the safety of hydraulic structures. In this work, a numerical model for simulating local scour was constructed, based on the open source code computational fluid dynamics model Open FOAM. We consider both the bedload and suspended load sediment transport in the scour model and adopt the dynamic mesh method to simulate the evolution of the bed elevation. We use the finite area method to project data between the three-dimensional flow model and the two-dimensional(2D) scour model. We also improved the 2D sand slide method and added it to the scour model to correct the bed bathymetry when the bed slope angle exceeds the angle of repose. Moreover, to validate our scour model, we conducted and compared the results of three experiments with those of the developed model. The validation results show that our developed model can reliably simulate local scour.

关键词： suspended validate adopt slide correct negligible hydraulic elevation turbulence projection

Growth and Saturation of the Relativistic Harmonic Radiation

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Chinese Physics Letters 1996年第1期13卷 31-34页

作者： ZENG Gui-hua YU Wei SHEN bai-fei XU Zhi-zhan Institute of Optics and Fine Mechanics Academia SinicaShanghai 201800

A series of coupling equations for the relativistic coherent harmonic generation is derived taking account of the coupling effect among the harmonic contents and plasmas *** these equations,the growth and satuTaiion of amplitude of the third harmonic wave is *** show that the coupling effect induces the saturation of harmonics,which is identical with ones of the Lagrangian description.

关键词： wave. harmonic coupling

Can ChatGPT Boost Artistic Creation:The Need of Imaginative Intelligence for Parallel Art

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IEEE/CAA Journal of Automatica Sinica 2023年第4期10卷 835-838页

作者： Chao Guo Yue Lu yong Dou fei-Yue Wang The State Key Laboratory for Management and Control of Complex Systems Chinese Academy of SciencesBeijing 100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100049China Institute of Systems Engineering Macao University of Science and TechnologyMacao 999078China

CHATGPT,one of the leading Large Language Models(LLMs),has acquired linguistic capabilities such as text comprehension and logical reasoning,enabling it to engage in natural conversations with humans.

关键词： such has reasoning

Double-slit interference of a relativistic vortex laser

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Chinese Physics B 2019年第1期28卷 442-446页

作者： Hao Zhang bai-fei Shen Lin-Gang Zhang State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Physics Shanghai Normal University

The interference of a relativistic vortex laser is investigated for the case when a linearly polarized Laguerre–Gaussian pulse impinges on a double-slit solid target. Three-dimensional particle-in-cell simulation results show that the interference fringes of high-order harmonics are twisted, similar to that of the fundamental vortex laser. The twisting order of the interference pattern is determined by the order of the vortex high-order harmonics, which can be explained by the classic double-slit interference models. The usual double-slit interference has been extended to the regime of relativistic intensity,which may have potential applications for measuring the topological charge of vortex high-order harmonics.

关键词： optical vortices fringes analysis harmonics

Self-Generated Magnetic Fields in Plasmas

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Chinese Physics Letters 1996年第10期13卷 747-749页

作者： ZENG Gui-hua YU Wei SHEN bai-fei XU Zhi-zhan Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800

The self-generated magnetic field induced by an ultraintense short laser pulse propagating in a uniform underdense plasma is investigated. The magnetic fields are strong and associated with the plasma wave wake field.... 详细信息

关键词： pulse laser magnetic

Short Panicle 3 controls panicle architecture by upregulating APO2/RFL and increasing cytokinin content in rice

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Journal of Integrative Plant Biology 2019年第9期61卷 987-999页

作者： yong Huang Xufeng bai Meifang Luo yongzhong Xing National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China

Inflorescence architecture is a major determinant of spikelet numbers per panicle, a key component of grain yield in rice. In this study, Short Panicle 3(SP3) was identified from a short panicle 3(sp3) mutant in which T-DNA was inserted in the promoter of SP3, resulting in a knockdown mutation. SP3 encodes a DNA binding with one finger(Dof) transcriptional activator. Quantitative real time(q RT)-PCR and RNA in situ hybridization assays confirmed that SP3 is preferentially expressed in the young rice inflorescence, specifically in the branch primordial regions. SP3 acts as a negative regulator of inflorescence meristem abortion by upregulating APO2/RFL. SP3 both up-and downregulates expression of genes involved in cytokinin biosynthesis and catabolism, respectively. Consequently, cytokinin concentrations are decreased in young sp3 panicles, thereby leading to small panicles having fewer branches and spikelets. Our findings support a model in which SP3 regulates panicle architecture by modulating cytokinin homeostasis. Potential applications to rice breeding, through gene-editing of the SP3 promoter are assessed.

关键词： DNA controls panicle architecture RFL APO

Fabrication of chitosan microspheres for efficient adsorption of methyl orange

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Chinese Journal of Chemical Engineering 2018年第3期26卷 657-666页

作者： Linlin Zhai Zhishan bai yong Zhu Bingjie Wang Wenqiang Luo State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Mechanical and EngineeringEast China University of Science and Technology

In this article, morphology, structure and size controllable chitosan microspheres with high mechanical strength were synthesized by microfluidic technology combining chemical crosslinking and used as an adsorbent for methyl orange. The synthesized adsorbents were characterized using scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR), and an Energy Dispersive Spectrometer(EDS). The effect of pH revealed that the adsorption process depended on pH and the pH variation of methyl orange solution after adsorption indicated that adsorption capacity was affected through the associated role of chitosan nature and pH variation. Experimental results suggested that the as-prepared chitosan microspheres were controlled within a narrow size distribution(coefficients of variation is 1.81%), whose adsorption capacity reached to 207 mg·g^(-1) and mechanical strength was suitable to resist forces. In addition, the adsorption isotherm was well fitted with the Langmuir model, and the adsorption kinetic was best described by the pseudo-second-order kinetic *** high performance microfluidic-synthesized chitosan microspheres have promising potentials in the applications of removing dyes from wastewater.

关键词： Microfluidic technology Chitosan microspheres Adsorption Methyl orange

Microfluidic synthesis of renewable biosorbent with highly comprehensive adsorption performance for copper （II）

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Frontiers of Chemical Science and Engineering 2017年第2期11卷 238-251页

作者： yong Zhu Zhishan bai Bingjie Wang Linlin Zhai Wenqiang Luo State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology Shanghai 200237 China

A microsphere biosorbent with uniform size （CV = 1.52%）, controllable morphology and component, and high mechanical strength was synthesized from chitosan by microfluidic technology combining with chemical crosslinking and solvent extraction. This chitosan microsphere （CS-MS） was prepared with a two-step solidification process, which was acquired by drying for the enhancement of mechanical property in final. The adsorption behavior of CS-MS towards copper （II） and main influencing factors on adsorption performance were investigated by batch experiments. Kinetic data high-lighted dominant chemical bonding along with electrons transferring in adsorption process. Isothermal analysis indicated that adsorption capacity was relevant to the number of active site. All these explorations provided a new direction for preparing highly comprehensive performance sorbent used in heavy metal treatment via microfluidic technology.

关键词： chitosan microsphere microfluidic technol- ogy adsorption copper (II)

Some issues in diagnostics of solar chromospheric magnetic fields with the Mg b_2 line

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Research in Astronomy and Astrophysics 2014年第2期14卷 193-206页

作者： Xian-yong bai Yuan-yong Deng Jiang-Tao Su Guo-Ping Wang Key Laboratory of Solar Activity National Astronomical ObservatoriesChinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Space Weather Chinese Academy of Sciences

Up to now, exact measurements of chromospheric magnetic fields have not been as successful as those done in the photosphere. We are currently engaging in diagnostics of chromospheric magnetic fields with the Mg b2 line by employing the Multi-Channel Solar Telescope at Huairou Solar Observing Station. Therefore, how to improve accuracy in the measurement is the main issue of our present study. To this end, we first study linear calibration coefficients for longitudinal and transverse components of chromospheric fields, which vary with wavelength, in the case of a weak field assumption. Then the polarization crosstalk introduced by instruments is analyzed in detail with two numerical simulation methods. Comparisons of the po- larization signals between cases with and without correction are presented. The result indicates that polarization accuracy is greatly improved after crosstalk correction.

关键词： Sun: chromospheric -- magnetic fields -- spectral profiles: radiative transfer