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Effects of Biostimulation-Bioaugmentation on Coastal Microbial Community in an in situ Mesocosm System

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Journal of Ocean university of china 2024年第1期23卷 233-246页

作者： yuan Fangzheng ZHAO Yangyong DAI Yulai YANG Wen ZHU jinyong College of Marine science Ningbo UniversityNingbo 315800China Zhejiang Easytest Environmental technology Co. Ltd.Ningbo 315800China Hangzhou Academy of Agricultural sciences Hangzhou 310024China

Globally,various types of pollution affect coastal waters as a result of human *** and biostimulation are effective methods for treating water ***,few studies have explored the response of coastal prokaryotic and eukaryotic communities to bioaugmentation and ***,a 28-day outdoor mesocosm experiment with two treatments(bioaugmentation-A and combined treatment of bioaugmentation and biostimulation-AS)and a control(untreated-C)were carried *** experiment was conducted in Meishan Bay to explore the composition,dynamics,and co-occurrence patterns of prokaryotic and eukaryotic communities in response to the A and AS using 16S rRNA and 18S rRNA gene amplicon *** treatment,Gammaproteobacteria and Epsilonproteobacteria were significantly increased in group AS compared to group C,while Flavobacteriia and Saprospirae were significantly *** was significantly reduced in AS compared to C,while Chrysophyta was significantly reduced in both AS and *** to C,the principal response curve analyses of the prokaryotic and eukaryotic communities both showed an increasing trend followed by a decreasing trend for ***,the trends of prokaryotic and eukaryotic communities in group A were similar to those in group AS compared with group C,but AS changed them more than A *** to the species weight table on principal response curves,a significant increase was observed in beneficial bacteria in prokaryotic communities,such as Rhodobacterales and Oceanospirillales,along with a decrease in autotrophs in eukaryotic communities,such as Chrysophyta and *** properties of network analysis reveal that A and AS complicate the interactions between the prokaryotic and eukaryotic ***,these findings expand our understanding of the response pattern of the bioaugmentation and biostimulation on coastal prokaryotic and eukaryotic communities.

关键词： prokaryotic community eukaryotic community bioaugmentation biostimulation coastal waters

A CHARACTERISTIC-BASED FINITE VOLUME SCHEME FOR SHALLOW WATER EQUATIONS

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Journal of Hydrodynamics 2009年第4期21卷 531-540页

作者： GUO Yan LIU Ru-xun DUAN Ya-li LI yuan department of mathematics University of Science and Technology of China Hefei 230026 China department of mathematics China University of Mining and Technology XuZhou 221116 China

We propose a new characteristic-based finite volume scheme combined with the method of Central Weighted Essentially Non-Oscillatory （CWENO） reconstruction and characteristics, to solve shallow water equations. We apply the scheme to simulate dam-break problems. A number of challenging test cases are considered, such as large depth differences even wet/dry bed. The numerical solutions well agree with the analytical solutions. The results demonstrate the desired accuracy, high-resolution and robustness of the presented scheme.

关键词： shallow water equations finite volume method characteristic method Central Weighted Essentially Non-Oscillatory (CWENO) scheme HLLC flux

SYNTHESIS AND CHARACTERIZATION OF FOUR-ARMED BLOCK POLY(STYRENE-b-p-NITROPHENYL METHACRYLATE)PREPARED BY THE ATRP METHOD

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Chinese Journal of Polymer science 2002年第4期20卷 353-360页

作者： Cai-yuan Pan Lei Tao Ye Liu department of Polymer science and Engineering university of science and technology of china, hefei 2.002. china department of Polymer science and Engineering University of Science and Technology of China Hefei 230026

A novel tetrafunctional initiator, C [CH_2O (CH_2)_3 OOCCH(Br)CH_3]_4 (1), was synthesized through the reaction oftetraol with α-bromopropionyl chloride, and then was used as initiator of atom transfer radical polymerization (ATRP) in thepreparation of 4-armed polystyrene (PSt) with narrow polydispersity. The structure, molecular weight and molecular weightdistribution (MWD) of each arm were studied by ~1H-NMR and GPC data of hydrolyzed products of the 4-armed PSt. TheATRP of St using 1/CuBr/bpy as initiator system is of 'living' character based on the following evidence: narrow MWD,constant concentration of chain radical during the polymerization, control of molecular weight by the molar ratio of monomerconsumed to 1. The 4-armed poly(St-b-p-nitrophenyl methacrylate) [poly(St-b-NPMA)] was prepared by the ATRP ofNPMA using 4-armed PSt with terminal bromine as the initiator, and characterized by FT-IR, ~1H-NMR spectra and GPCcurves. The micelles with PSt as core, and PNPMA as shell were formed by dropping DMSO into a solution of 4-armedpoly(St-b-NPMA) in DMF, as proved by laser light scatter (LLS) method.

关键词： Tetrafunctional initiator Atom transfer radical polymerization 4-Armed polystyrene 4-Armed poly(styrene-b-pnitrophenyl methacrylate) Unimolecular micelles

CONTROLLED RADICAL COPOLYMERIZATION OF STYRENE AND MALEIC ANHYDRIDE UNDER GAMMA RADIATION IN THE PRESENCE OF BENZYL DITHIOBENZOATE

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Chinese Journal of Polymer science 2002年第6期20卷 525-530页

作者： De-cheng Wu Ying-fang Zou Cai-yuan Pan department of Polymer science and Engineering university of science and technology of china, hefei 2.002., china department of Polymer science and Engineering University of Science and Technology of China Hefei 230026

The copolymerization of styrene (St) with maleic anhydride (MAh) under gamma radiation at room temperature in the presence of benzyl dithiobenzoate (BDTB) was found to display 'living' nature evidenced by constant concentration of chain radicals during the copolymerization, linear evolution of molecular weights with conversion and narrow molecular weight distribution (M-w/M-n = 1.23-1.35). The compositional analysis and the sequence structural information of the copolymers obtained from DEPT (Distortionless Enhancement by Polarization Transfer) experiments demonstrate that the copolymers obtained also possess strictly alternating structure.

关键词： controlled radical polymerization alternating copolymer maleic anhydride styrene

Hybrid of comprehensive learning particle swarm optimization and SQP algorithm for large scale economic load dispatch optimization of power system

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science china(Information sciences) 2010年第8期53卷 1566-1573页

作者： WANG Yu , LI Bin & yuan Bo department of Electronic science and technology, School of Information science and technology, university of science and technology of china, hefei 2.002., china department of Electronic science and technology School of Information Science and Technology University of Science and Technology of China Hefei China

Economic load dispatch (ELD) is an important optimization task in power systems. In the previous works, various researchers attempted to address this problem by both mathmatical and heuristic optimization algorithms. However, there are still two practically important issues that have not attracted sufficient attention: 1) the stability of these algorithms cannot be effectively ensured; 2) the performance of these algorithms on large scale ELD optimization tasks remains to be unsatisfactory. CLPSO is an effective global optimization algorithm. To strengthen the convergence ability of CLPSO, the sequential quadratic programming (SQP) is introduced into it. This results in a new algorithm hybrid of comprehensive learning particle swarm optimization and sequential quadratic programming (SQP-CLPSO). To assess the performance of SQP-CLPSO, it is compared with several state-of-the-art evolutionary algorithms (EAs) on the classical ELD optimization problems. Experimental results show that SQP-CLPSO has very good abilities of convergence, diversity maintainence and scalability, which make it suitable for complex ELD problems.

关键词： particle swarm optimization comprehensive learning particle swarm optimization sequential quadratic programming local search power systems economic load dispatch

Multi-polarimetric SAR image compression based on sparse representation

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science china(Information sciences) 2012年第8期55卷 1888-1897页

作者： CHEN yuan,ZHANG Rong&YIN Dong department of Electronic Engineering and Information science,university of science and technology of china,hefei 2.002.,china department of Electronic Engineering and Information science University of Science and Technology of China Hefei China

The use of sparse representation in signal and image processing has gradually increased over the past few *** an over-complete dictionary from a set of signals allows us to represent these signals as a sparse linear combination of dictionary *** considering the relativity among the multi-polarimetric synthetic aperture radar(SAR)images,a new compression scheme for multi-polarimetric SAR image based sparse representation is *** multilevel dictionary is learned iteratively in the 9/7 wavelet domain using a single channel SAR image,and the other channels are compressed by sparse approximation,also in the 9/7 wavelet domain,followed by entropy coding of the sparse *** experimental results are compared with two state-of-the-art compression methods:SPIHT(set partitioning in hierarchical trees)and *** of the efficiency of the coding scheme,our method outperforms both SPIHT and JPEG2000 in terms of peak signal-to-noise ratio(PSNR)and edge preservation index(EPI).

关键词： multi-polarimetric SAR image compression sparse representation multilevel dictionary learning edge preservation index(EPI)

The Real-gas Effect in Single-bubble Sonoluminescence

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Communications in Nonlinear science and Numerical Simulation 1999年第1期4卷 29-34页

作者： Li yuan (LSEC, Institute of Computational mathematics and Scientific-Engineering Computing, Chinese Academy of sciences, Beijing 100080, china) Wei WEI (Center for Nonlinear sciences, university of science and technology of china, hefei 2.002.,china) LSEC Inst. Compl. Math./Sci.-Eng. Comp. Chinese Academy of Sciences Beijing 100080 China Center for Nonlinear sciences Univ. of Sci. and Technol. of China Hefei 230026 China department of Physics Chinese University of Hong Kong Shatin Hong Kong

The full set of hydrodynamic equations governing the oscillation of a bubble is solved numerically by using a modified equation of state with ionization. We show that the hydro-thermal process in the form of compression waves and low-level ionization are dominant inside a sonoluminescing bubble for a wide range of driving pressure. The resulting thermal bremsstrahlung radiation has pulse heights and widths that agree with experimental data for cases considered in this paper.

关键词： single-bubble sonoluminescence ionization bremsstrahlung

s-ordering operator expansions of quantum-mechanical fundamental representations and their applications

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science china(Physics,Mechanics & Astronomy) 2011年第12期54卷 2150-2154页

作者： FAN HongYi 1,3 , XU YeJun 2 & yuan HongChun 3,4 1 department of Materials science and Engineering, university of science and technology of china, hefei 2.002., china 2 department of Physics Electronic and Engineering, Chizhou university, Chizhou 247000, china 3 department of Physics, Shanghai Jiao Tong university, Shanghai 200030, china 4 College of Optoelectronic Engineering, Changzhou Institute of technology, Changzhou 213002, china department of Materials science and Engineering University of Science and Technology of China Hefei China department of Physics Shanghai Jiao Tong University Shanghai China department of Physics Electronic and Engineering Chizhou University Chizhou China College of Optoelectronic Engineering Changzhou Institute of Technology Changzhou China

We show that the quantum-mechanical fundamental representations, say, the coordinate representation, the coherent state representation, the Fan-Klauder entangled state representation can be recast into s-ordering operator expansion, which is elegant in form and has many applications in deriving new operator identities. This demonstrates that Dirac's symbolic method can be merged into Newton-Leibniz integration theory in a broad way.

关键词： s-ordering operator expansion operator identities quantum mechanical representation

A verifiable low-level concurrent programming model based on colored Petri nets

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science china(Information sciences) 2011年第10期54卷 2013-2027页

作者： WANG Shengyuan & DONG yuan department of Computer science and technology,Tsinghua university,Beijing 100084,china department of Computer science and technology Tsinghua University Beijing China

Concurrent programs written in a machine-level language are being used in many areas,but the verification of such programs brings various new challenges to the programming language *** of existing contributions on verifying the safety properties of concurrent programs are for high-level languages,specifications,or calculi in the *** to the lack of abstraction at a low level,additional work is needed to extend these methods to machine-level *** paper describes an approach to integrate Petri nets into low-level concurrent programs to form a new programming model (abstract machine).A program in the programming model is a restricted version of colored Petri net,with transitions colored by assembly codes for machine-level threads,and places colored by shared data consisting of memory locations or *** analysis and verification approaches for usual Petri nets can be applied indirectly for such a low-level concurrent program.

关键词： low-level concurrent programs colored Petri nets abstract machine verification