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Journal of Environmental Sciences 2022年第2期34卷 48-58页

作者： Jinhong Fan ying Cai Shihao shen Lin Gu State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

In this study,complete tetracycline(TTC)and above 50%of total organic carbon(TOC)were removed by Fe S/PS after 30 min under optimized *** free radicals and high-valent iron ions were identified to generate in the process,the apparent similarity between intermediate products of Fe S/PS,Fe/PS,and UV/PS systems demonstrated that the degradation of TTC was due to sulfate radicals(SO_(4)·^(-))and hydroxyl radicals(·OH).Based on the reaction between free radicals and organic matter,we speculated that TTC in the Fe S/PS system was decomposed and mineralized by dehydration,dehydrogenation,hydroxyl addition,demethylation,substitution,E-transfer,and ***,a new understanding of Fe S-mediated PS activation based on stoichiometry and kinetic analysis showed that there were both homogeneous and heterogeneous reactions that occurred in the entire ***,due to the effect of p H on the dissolution of iron ions,the homogeneous reaction became the principal process with iron ions concentration exceeding 1.35 mg/*** work provides a theoretical basis for the study of the degradation of TTC-containing wastewater by the iron-based advanced oxidation process.

关键词： Tetracycline Persulfate activation Iron valence Homogeneous-heterogeneous reactions Degradation pathways

Separation efficiency of liquid-solid undergoing vibration based on breakage of liquid bridge

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Particuology 2022年第2期20卷 103-110页

作者： jian Chen Jiahe shen Jie Guo Geoff Wang School of Mechanical Engineering The University of NewcastleCallaghan 2308Australia School of Chemical Engineering The University of QueenslandSt Lucia 4072Australia Centre for Bulk Solids and Particulate Technologies Newcastle Institute for Energy and ResourcesThe University of NewcastleCallaghan 2308Australia

Vibrating separation is a significant method for liquid-solid separation.A typical example is the vibrating screen to dewater wet granular *** properties of granular matter and the vibrating parameters significantly affect the separation *** study investigates the effect of vibration parameters in separation based on the breakage of large-scale liquid bridge numerically by using a calibrated simulation *** analysing the simulation results,the liquid bridge shape and the volume between two sphere particles for various particle sizes and particle distances were studied in the static condition under the effect of *** results show a general reducing trend of liquid bridge volume when the radius ratio of two particles increases,particularly when the ratio increases to ***,a set of vibrating motion was applied to the liquid bridge in the simulation model.A group of experiments were also performed to validate the simulation model with ***,the effect of vibrating peak acceleration,distance between spheres and radius on the separation efficiency which was reflected by the residual water were *** is found that separation efficiency increased obviously with the peak acceleration and the increase slowed down after the peak acceleration over 1 m/s^(2).

关键词： Liquid bridge shape Liquid bridge volume Retention capacity Vibration VOF model

High-speed electro-optic modulation in topological interface states of a one-dimensional lattice

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Light(Science & Applications) 2023年第9期12卷 1961-1970页

作者： Yong Zhang jian shen Jingchi Li Hongwei Wang Chenglong Feng Lei Zhang Lu Sun jian Xu Ming Liu ying Wang Yonghui Tian jianwen Dong Yikai Su State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China Center for Advanced Electronic Materials and Devices Shanghai Jiao Tong UniversityShanghai 200240China Institute of Microelectronics and Key Laboratory for Magnetism and Magnetic Materials of MOE School of Physical Science and TechnologyLanzhou UniversityLanzhou 730000 GansuChina State Key Laboratory of Optoelectronic Materials and Technologies&School of Physics Sun Yat-sen UniversityGuangzhou 510275China

lectro-optic modulators are key components in data communication,microwave photonics,and quantum *** bandwidth,energy efficiency,and device dimension are crucial metrics of ***,we provide an important direction for the miniaturization of electro-optic modulators by reporting on ultracompact topological modulators.A topological interface state in a one-dimensional lattice is implemented on a thin-film lithium-niobate integrated *** to the strong optical confinement of the interface state and the peaking enhancement of the electro-optic response,a topological cavity with a size of 1.6×140μm^(2)enables a large modulation bandwidth of 104 *** first topological modulator exhibits the most compact device size compared to reported LN modulators with bandwidths above 28 GHz,to the best of our knowledge.100 Gb/s non-return-to-zero and 100 Gb/s four-level pulse amplitude modulation signals are *** switching energy is 5.4 fJ/bit,owing to the small electro-optic mode volume and low *** topological modulator accelerates the response time of topological photonic devices from the microsecond order to the picosecond order and provides an essential foundation for the implementation of large-scale lithium-niobate photonic integrated circuits.

关键词： modulator interface lattice

Distribution of TiN inclusions in Ti-stabilized ultra-pure ferrite stainless steel slab

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Journal of Iron and Steel Research International 2019年第9期26卷 962-972页

作者： Hao-jian Duan ying Zhang ying Ren Li-feng Zhang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

In order to clarify and control the silver defect on surface of cold-rolled sheet of the Ti-stabilized ultra-pure ferrite stainless steel, the distribution of TiN inclusions on the cross section of hot-rolled plate was studied using automated scanning electron microscopy/energy-dispersive X-ray spectroscopy inclusion analysis (ASPEX 1020 system). It was found that the number density decreases sharply from the surface to the center of the hot-rolled plate, whereas the average size increases. Then, the distribution of TiN inclusions on the cross section of continuously cast slab was investigated. Similarly, numerous small-sized TiN inclusions were generated at the subsurface of the slab. The average size rapidly increased and the number density dramatically decreased from the subsurface to 1/4 thickness, while from 1/4 thickness to 1/2 thickness, the increase in average size and the decrease in number density were slight. Thermodynamics results showed that TiN inclusion was formed below the liquidus temperature, which indicated that TiN inclusions could not be formed during secondary refining. Considering the microsegregation of solute elements and the equilibrium of TiN formation during solidification, TiN precipitated in the mushy zone when the solid fraction was close to 0.2. The growth of TiN was analyzed based on the diffusion-controlled growth model. With the increase in cooling rate, the time for TiN growth decreased and the size of TiN inclusions was diminished, which revealed the size distribution of TiN inclusions in the cast slab qualitatively.

关键词： TiN inclusion Ti-stabilized ultra-pure ferrite stainless steel Distribution in slab Thermodynamics Diffusion-controlled growth model

Receptor-Like Kinases in Plant Innate Immunity

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Journal of Integrative Plant Biology 2013年第12期55卷 1271-1286页

作者： ying Wu jian-Min Zhou State Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental BiologyChinese Academy of Sciences

Plants employ a highly effective surveillance system to detect potential pathogens, which is critical for the success of land plants in an environment surrounded by numerous microbes. Recent efforts have led to the identification of a number of immune receptors and components of immune receptor complexes. It is now clear that receptor-like kinases （RLKs） and receptor-like proteins （RLPs） are key pattern-recognition receptors （PRRs） for microbe- and plant-derived molecular patterns that are associated with pathogen invasion. RLKs and RLPs involved in immune signaling belong to large gene families in plants and have undergone lineage specific expansion. Molecular evolution and population studies on phytopathogenic molecular signatures and their receptors have provided crucial insight into the co-evolution between plants and pathogens.

关键词： Receptor-like kinase (RLK) receptor-like protein (RLP) cytoplasmic RLK (RLCK) pathogen-associated molecular pattern (PAMP) damage-associated molecular pattern (DAMP) plant innate immunity.

A Lattice Boltzmann Method for Simulating the Separation of Red Blood Cells at Microvascular Bifurcations

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Chinese Physics Letters 2012年第2期29卷 130-133页

作者： shen Zai-Yi HE ying Department of Modern Mechanics University of Science and Technology of ChinaHefei 230026

A computational simulation for the separation of red blood cells (RBCs) is *** deformability of RBCs is expressed by the spring network model,which is based on the minimum energy *** the computation of the fluid flow,the lattice Boltzmann method is used to solve the Navier-Stokes *** of the fluid-membrane interaction is carried out by using the immersed boundary *** verify our method,the motions of RBCs in shear flow are *** motions of RBCs observed in the experiments are reproduced,including tank-treading,swinging and *** motions of 8 RBCs at the bifurcation are simulated when the two daughter vessels have different *** results indicate that when the ratio of the daughter vessel diameter becomes smaller,the distribution of RBCs in the two vessels becomes more non-uniform.

关键词： method Bifurcation bifurcation

Study on the effect of thermal deformation on the liquid seal of high-temperature molten salt pump in molten salt reactor

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Nuclear Science and Techniques 2023年第2期34卷 128-138页

作者： Xing‑Chao shen Yuan Fu jian‑Yu Zhang Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

The high-temperature molten salt pump is the core equipment in a molten salt reactor that drives the flow of the molten salt *** stability is key to the continuous and reliable operation of the molten salt pump,and the liquid seal at the wear ring can affect the dynamic characteristics of the rotor *** the molten salt pump is operated in the hightemperature molten salt medium,thermal deformation of the submerged parts inevitably occurs,changing clearance between the stator and rotor,affecting the leakage and dynamic characteristics of the *** this study,the seal leakage,seal dynamic characteristics,and rotor system dynamic characteristics are simulated and analyzed using finite element simulation software based on two cases of considering the effect of seal thermal deformation effect or *** results show a significant difference in the leakage characteristics and dynamic characteristics of the seal obtained by considering the effect of seal thermal deformation and neglecting the effect of thermal *** leakage flow rate decreases,and the first-order critical speed of the seal-bearing-rotor system decrease after considering the seal’s thermal deformation.

关键词： High-temperature molten salt pump Seal thermal deformation Leakage characteristics Seal dynamic characteristics Critical speed

A 4H-SiC trench MOSFET structure with wrap N-type pillar for low oxide field and enhanced switching performance

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Chinese Physics B 2022年第7期31卷 629-636页

作者： Pei shen ying Wang Fei Cao The Key Laboratory of RF Circuits and Systems Ministry of EducationHangzhou Dianzi UniversityHangzhou 310018China The School of Mechanical and Electronic Engineering Pingxiang UniversityPingxiang 337055China

An optimized silicon carbide(SiC)trench metal-oxide-semiconductor field-effect transistor(MOSFET)structure with side-wall p-type pillar(p-pillar)and wrap n-type pillar(n-pillar)in the n-drain was investigated by utilizing Silvaco TCAD *** optimized structure mainly includes a p+buried region,a light n-type current spreading layer(CSL),a p-type pillar region,and a wrapping n-type pillar region at the right and bottom of the *** improved structure is named as *** side-wall p-pillar region could better relieve the high electric field around the p+shielding region and the gate oxide in the off-state *** wrapping n-pillar region and CSL can also effectively reduce the specific on-resistance(Ron,sp).As a result,the SNPPT-MOS structure exhibits that the figure of merit(Fo M)related to the breakdown voltage(V_(BR))and Ron,sp(V_(BR)^2R_(on,sp))of the SNPPT-MOS is improved by 44.5%,in comparison to that of the conventional trench gate SJ MOSFET(full-SJ-MOS).In addition,the SNPPT-MOS structure achieves a much fasterwitching speed than the full-SJ-MOS,and the result indicates an appreciable reduction in the switching energy loss.

关键词： 4H-silicon carbide(4H-SiC)trench gate MOSFET breakdown voltage(V_(BR)) specific onresistance(R_(on sp)) switching energy loss super-junction

Gene transfer into primary cultures of fetal neural stem cells by a recombinant adenovirus carrying the gene for green fluorescent protein

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第4期9卷 299-305页

作者： Yong FU shen-qing WANG ying-peng LIU Guo-peng WANG jian-ting WANG Shu-sheng GONG Department of Otorhinolaryngology the First Affiliated Hospital School of Medicine Zhejiang University Hangzhou 310003 China Department of Otorhinolaryngology Union Hospital of Tongii Medical College Huazhong University of Science and Technology Wuhan 430022 China Department of Surgery-Otolaryngology University of Kentucky Medical Center Lexington Kentucky 40536 USA Department of Surgery-Otolaryngology Beijing Tongren Hospital Capital Medical University Beijing 100730 China

Objective: To evaluate the transduction efficiency of a recombinant adenovirus carrying the gene for green fluorescent protein (Ad-GFP) into the primary cultures of fetal neural stem cells (NSCs) by the expression of GFP. Methods: The Ad-GFP was constructed by homologous recombination in bacteria with the AdEasy system; NSCs were isolated from rat fetal hippocampus and cultured as neurosphere suspensions. After infection with the recombinant Ad-GFP, NSCs were examined with a fluorescent microscopy and a flow cytometry for their expression of GFP. Results: After the viral infection, flow cytometry analysis revealed that the percentage of GFP-positive cells was as high as 97.05%. The infected NSCs sustained the GFP expression for above 4 weeks. After differentiated into astrocytes or neurons, they continued to express GFP efficiently. Conclusion: We have success- fully constructed a viral vector Ad-GFP that can efficiently infect the primary NSCs. The reporter gene was showed fully and sustained expression in the infected cells as well as their differentiated progenies.

关键词： Recombinant adenovirus vector Viral infection Fetal neural stem cells Green fluorescent protein

Synthesis and Crystal Structure of 1-H-Pyrrole-2-carboxylic Acid [2-(Naphthalen-1-ylamino)-ethyl]-amide

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Chinese Journal of Structural Chemistry 2006年第7期25卷 771-774页

作者： YIN Zhen-Ming WANG jian-ying College of Chemistry and Life Science Tianjin Normal University Tianjin 300074 China

1-H-Pyrrole-2-carboxylic acid [2-（naphthalen-1-ylamino）-ethyl]-amide has been synthesized and characterized. Its crystal is of monoclinic, space group P2 1/n with a = 5.930（6）, b = 12.144（13）, c = 20.10（2） , A, β = 95.709（17）°, V= 1441（3） ,A, Z= 4, C17H17N3O, Mr= 279.34, Dc= 1.288 g/cm^3, F（000） = 592, μ（MoKa） = 0.083 mm^-1, S = 1.019, R = 0.0473 and wR = 0.1181 for 1713 observed reflections with I 〉 2 σ（I）. X-ray diffraction reveals that two molecules of the title compound form a dimer through a pair of N-H…O hydrogen bonds.

关键词： 1-H-pyrrole-2-carboxylic acid [2-(naphthalen-l-ylamino)-ethyi]-amide crystal structure hydrogen bonds