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Staggered Grid Scheme for the FFT-Based Methods

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Chinese Journal of Electronics 2019年第5期28卷 1066-1072页

作者： XIE Jiaye KONG Weibin PANG Lili SONG Weiju huang zhixiang wu xianliang Industrial Center Nanjing Institute of Technology State Key Laboratory of Millimeter Waves College of Information Engineering Yancheng Institute of Technology Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University

A staggered grid scheme is proposed to reduce both the total memory requirement and the CPU time of generating the corrected near matrix in the FFTbased methods. Two sets of Cartesian grids are used to project the source points and the field points, *** proposed method does not lower the efficiency of computing far matrix-vector products, compared with the traditional uniform Cartesian grid scheme. Some numerical experiments are provided to demonstrate both the correctness and the efficiency of the proposed method.

关键词： Green’s function Singularity RFG-FFT Staggered grid scheme Corrected near matrix

Study on the Gain Material with Four Energy Level Model Using FDTD Method

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Optics and Photonics Journal 2013年第2期3卷 15-20页

作者： Hui Xue zhixiang huang xianliang wu 1Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei China 2Department of Physics and Electronic Engineering Hefei Normal University Hefei China Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei China

A faster numerical method based on FDTD for the four energy level atomic system is present here. The initial conditions for the electrons of each level are achieving while the fields are in steady state. Polarization equation, rate equations of electronic population and Maxwell’s equations were used to describe the coupling between the atoms and electromagnetic wave. Numerical simulations, based on a finite-difference time-domain (FDTD) method, were utilized to obtain the population inversion and lasing threshold. The validity of the model and its theory is confirmed. The time, which we can observe the lasing phenomenon, is much shorter in our new model. Our model can be put into using in large scale simulations in mutiphysics to reduce the total simulated time.

关键词： Finite-Difference Time-Domain Gain Material Lasing

Chitosan-based carbon dots with multi-color-emissive tunable fluorescence and visible light catalytic enhancement properties

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Nano Research 2023年第2期16卷 1835-1845页

作者： qiong wu Shouyun Zhang Shuang Li Yan Yan Shitao Yu Ruiyang Zhao Lang huang State Key Laboratory Base of Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042China Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101China

Carbon quantum dots(CQDs)are receiving increasing attention for their excellent photostability,low toxicity,and tunable fluorescence performance,but it is still challenging to prepare full-spectrum CQDs using only one single set of precursor and *** this study,P and N co-doped carbon dots(N,PR-CQDs)with multi-color-emissive tunable fluorescence from blue to green and orange were synthesized from bio-based chitosan,employing phosphoric acid as solvent and *** introduction of phosphoric acid successfully shortens the manufacturing reaction time,and the heteratomic functional groups of P–O/P=O on surface of carbon dots enrich the surface defect states,promoting n–π*transition,and therefore changing their electron structure/energy level to reduce the band gap,thus facilitating emission at long ***,increasing phosphoric acid concentration leads to characteristic excitation peaks red shift from 320 to 420 nm with the characteristic emission peaks red shift from 406 to 503 nm.A new emission peak at 610 nm appears,enabling N,PR-CQDs exhibit double emission peaks with fluorescence color from green to yellow to *** compositing with carbon nitride(g-C3N4),N,PR-CQDs work as photosensitizer and effectively narrow the energy gap(Eg)of g-C3N4 from 2.75 to 2.40 eV,endowing the photocatalyst higher visible light capture ability and broader light response *** photocatalytic degradation rate of rhodamine B(RhB)under visible light irradiation reaches up to 98.39%within 60 min using N,P20%-CQDs/g-C3N4 as catalyst,which is 1.4 times that of pure g-C3N4,and it is demonstrated that·O2−is the major active substance contributing for RhB degradation by de-ethyl and aromatic ring breakage.

关键词： carbon dots multicolor luminescence chitosan visible light catalysis photosensitizer

Geochemistry and geological significance of the Upper Paleozoic and Mesozoic source rocks in the Lower Yangtze region

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Chinese Journal Of Geochemistry 2012年第3期31卷 315-322页

作者： huang Yanran ZHANG Zhihuan wu Liyuan ZANG Chunjuan LI qiong State Key Laboratory of Petroleum Resource and Prospecting China University of PetroleumBeijing 102249China Hunan Provmce Key Laboratory of Coal Resources Clean-utilization and Mine Environment Protection Hunan University of Science and TechnologyXiangtan 411201China Sinopec East China Company Nanjing 210011China

The Lower Yangtze region is one of the important marine sedimentation areas of oil and gas distribution in southern China,for its favorable source rocks,reservoirs and ***,the intense tectonic movements and complex hydrocarbon generation process made it highly impossible to form large-sized oil and gas *** it was divided to different hydrocarbon-bearing preservation units in oil-gas *** study shows that the Permian and Lower Triassic source rocks in the Lower Yangtze region are complicated in *** hydrocarbon generation potential of limestone there is low while argillaceous source rocks are overall of high abundance with excellent organic types,now in the process of hydrocarbon generation,so differences in high maturity influence the evaluation of organic matter abundance and *** characteristics indicate a reductive environment.n-alkanes are marked by a single peak,with no odd-even *** composition and distribution of the carbon numbers of n-alkanes,and the high abundance of long-chain tricyclic terpanes are indicative of marine *** high contents of pregnane,homopregnane,rearranged hopane suggest that the source rocks are of high *** is a good linear correlation between methylphenanthrene index and vitrinite *** correlation of oil-source rocks indicated that the oil of Well HT-3 may come from the Permian Longtan Formation in the huangqiao area,the oil of Wells Rong-2 and Juping-1 came from the Lower Triassic Qinglong Formation in the Jurong *** exploration here is promising in those different source rocks which all have great potential in hy-drocarbon generating,and oil and gas were produced in the late stage of hydrocarbon generation.

关键词：长江中下游地区烃源岩地球化学特征地质意义上古生界中生界有机质丰度天然气生产

Simulation and Experimental Study on the Effect of Dispersants on Soot Aggregation

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China Petroleum Processing & Petrochemical Technology 2020年第4期22卷 101-107页

作者： Liu qiong wu Zhiqiang huang Zuoxin Zhang Feng Zhao Yi Research Institute of Petroleum Processing SINOPECBeijing 10083

Diesel engine technology innovation causes excessive soot accumulated in engine *** to its detrimental effect on lubricant and diesel engine,improving the dispersibility of engine oil to restrain soot aggregation efficiently is the key technique for *** this study,the aggregation of soot and interaction between dispersant and soot were investigated by molecular dynamic *** was found that the molecular interaction between the dispersant and the soot aggregation system had a significant influence on disrupting the soot ***-PIBSI was more beneficial to having more interaction sites with soot molecules,while the mono-PIBSI with a high proportion of polar groups had stronger interaction with soot *** to the simulation result,suggestions for use of additives were *** black dispersancy test was exploited to verify the dispersion effect of different dispersants on carbon *** results indicate that mono-PIBSI and bis-PIBSI added at suitable mixture ratio to lubricant could perform good dispersion ability.

关键词： engine oil soot aggregation dispersant dispersancy molecular interaction

Dynamics evolution of γ' precipitates size and composition interface between γ/γ' phases in Ni-Al alloy at different aging temperatures

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Rare Metals 2022年第10期41卷 3552-3559页

作者： Xing-Chao wu Yong-Sheng Li Wei Liu Zhi-Yuan Hou Meng-qiong huang School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing210094China

The precipitation dynamics of γ’(L1-NiAl)phase and composition interfacial width between γ(fcc Ni)and γ’ phase were investigated using the phase field simulation linking with CALPHAD *** coarsening rate and particle size distribution(PSD) of γ’ phase,the temporal composition interfacial width of γ/γ’ in Ni-17 at% Al alloy aged at 923,973 and 1023 K were *** the aging temperature increases,the morphology of γ’ phase changes from the interconnected rectangle shape to the separated cuboidal *** average particle radius() of γ’ phase at coarsening stage follows ∞t^(n) with the exponents n=0.21,0.23 and 0.26,*** peak values of simulated PSDs at 923 K are less than the value calculated by the Lifshitz-Slyozov-Wagner(LSW) model,and the width of simulated PSD increases at later stage of *** normalized radius(r/)which corresponds to the peak value of PSD moves from1.1 to 1.0 as the aging temperature increases from 923 to1023 K,and they are smaller than that of LSW *** composition interfacial width decreases as the aging progresses and increases as the aging temperature increases.

关键词： Ni-Al alloy Precipitation Dynamics Particle size distribution Composition interface Phase field

Photon energy response optimization using few-channel spectroscopy dose method for Si-PIN photodetector applied in personal dose equivalent measurements

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Nuclear Science and Techniques 2020年第4期31卷 37-46页

作者： Ping huang Shu-qiong Li Run-Dong Yang Yun-Tian Sun Yong Yang wu Gao National Institute of Measurement and Testing Technology Chengdu 610021China Sichuan Radiation Technology Co. LtdChengdu 610021China Institute of Microelectronics School of Computer S&TNorthwestern Polytechnical UniversityXi’an 710072China

Si-PIN photodetectors having features such as low cost,small size,low weight,low voltage,and low power consumption are widely used as radiation detectors in electronic personal dosimeters(EPDs).The technical parameters of EPDs based on the Si-PIN photodetectors include photon energy response(PER),angular response,inherent error,and dose rate *** them,PER is a key parameter for evaluation of EPD measurement *** present,owing to the limitations of volume,power consumption,and EPD cost,the PER is usually corrected by a combination of single-channel counting techniques and filtering material ***,the above-mentioned methods have problems such as poor PER and low measurement *** solve such problems,in this study,a 1024-channel spectrometry system using a Si-PIN photodetector was developed and fullspectrum measurement in the reference radiation fields was conducted for radiation *** measurement results using the few-channel spectroscopy dose method showed that the PER could be controlled within±14%and±2%under the conditions of two and three energy intervals,respectively,with different channel *** PER measured at 0°angle of radiation incidence meets the-29%to+67%requirements of IEC 61526:***,the channel number and counts-to-dose conversion factors formed in the experiment can be integrated into an EPD.

关键词： Electronic personal dosimeter Si-PIN photodetector Personal dose equivalent Photon energy response Few-channel spectroscopy dose method

A Salmonella enterica serovar Typhi plasmid induces rapid and massive apoptosis in infected macrophages

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Cellular & Molecular Immunology 2010年第4期7卷 271-278页

作者： Shuyan wu Yuanyuan Li Yang Xu qiong Li Yuanyuan Chu Rui huang Zhenghong Qin Medical College of Soochow University SuzhouChina

pRST98 is a chimeric plasmid isolated from Salmonella enterica serovar Typhi(***)that mediates the functions of drug resistance and ***,we reported that Salmonella plasmid virulence(spv)genes were present in *** our current study,we investigated whether plasmid pRST98 exhibits significant cytotoxicity in ***98 was transferred into the avirulent Salmonella enterica serovar Typhimurium(***)strain RIA to create the transconjugant pRST98/*** standard *** virulent strain SR-11,which carries a 100-kb virulence plasmid,was used as a positive *** bacterial strains were incubated with a murine macrophage-like cell line(J774A.1)in *** of J774A.1 cells was examined by electron microscopy and flow cytometry after annexin-V/propidium iodide labeling,and the survival of Salmonella strains in J774A.1 cells was *** showed that macrophages infected with strain pRST98/RIA displayed greater levels of apoptosis than those infected with RIA and that pRST98 may increase bacterial survival in *** studies showed that the pRST98-induced death of macrophages was associated with the loss of mitochondrial membrane potential and that pRST98 may activate caspase-9 and then *** research data indicate that the virulence of bacteria that contain the pRST98 plasmid is enhanced;the presence of this plasmid increases the survival of the bacterial pathogen and acts through the mitochondrial pathway to mediate macrophage apoptosis.

关键词： apoptosis macrophage plasmid Salmonella enterica serovar Typ

Nanoscale metal organic frameworks inhibition of pyruvate kinase of M2

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Chinese Chemical Letters 2021年第10期32卷 3087-3089页

作者： Xiangling Ren Xinyuan huang qiong wu Longfei Tan Changhui Fu Yi Chen Xianwei Meng Laboratory of Controllable Preparation and Application of Nanomaterials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China CAS Key Laboratory of Cryogenics Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Tumor cells usually show abnormally high glycolysis rate to maintain the dynamic balance of *** growth of tumor cells can be affected by inhibiting the activity of pyruvate kinase(especially M2-type isozyme,PKM2),the rate limiting enzyme of *** is helpful to the treatment of ***,metal organic frameworks(MOFs) were found to inhibit the activity of *** ZIF-8 was synthesized by standing and ultrasonic method,*** ZIF-8 has the performance of inhibiting *** research showed that the inhibition ability was attributed to zinc ion in ***,the IC_(50) of ZIF-8 on PKM2 was one percent of that of zinc *** novel enzyme inhibitor is expected to be used in cancer therapy.

关键词： Metal organic frameworks Pyruvate kinase Glycolysis Lactate dehydrogenase Inhibition