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Synthesis of BiOCl photocatalyst by a low-cost,simple hydrolytic technique and its excellent photocatalytic activity

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International Journal of Minerals,Metallurgy and Materials 2012年第5期19卷 467-472页

作者： Yan Wang Zhu-qing Ski Cai-mei Fan Xiao-gang Hao Guang-yue ding yun-fang Wang College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan 030024 China College of Chemistry and Bioengineering Taiyuan University of Science and Technology Taiyuan 030021 China

A novel photocatalyst, bismuth oxychloride （BiOC1） micro-nano particles with a fine ferrite plate structure, was prepared by a low-cost, simple hydrolytic method. The as-prepared BLOC1 was characterized by scanning electron microscopy （SEM）, thermogravimetric analysis-differential thermal analysis （TGA-DTA）, X-ray diffraction （XRD）, and UV-vis diffuse reflectance spectra （DRS）. The effects of preparation conditions such as sodium dodecyl benzene sulfonate （SDBS） dispersant, HC1 concentration, and heat treatment temperature on BiOC1 performances were investigated. Moreover, its photocatalytic activity was evaluated on the degradation of methylene orange （MO） and was compared with that of TiO2 （P25）. The experimental results confirmed that BiOC1 micro-nano particles prepared with SDBS, the HC1 concentration of 1.5 mol/L, and the heat treatment temperature of 80℃ exhibited the best performance for the photodegradation of MO solution, and they showed good stability and better photocatalytic activity than P25 photocatalyst.

关键词： bismuth compounds bismuth oxychloride nanoparticles photocatalysis xenon light degradation methylene orange (MO)

AN ASYMPTOTIC SOLUTION OF VELOCITY FIELD IN SHIP WAVES

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Journal of Hydrodynamics 2006年第4期18卷 387-392页

作者： WU yun-gang TAO Ming-de Department of Mechanics and Engineering Science and The Key Laboratory of Wave Scattering and RemoteSensing Information Fudan University Shanghai 200433 China

The stationary phase method in conventional Lighthill＇s two-stage scheme to get the expressions of the velocity field was given up in this paper. The method that Ursell had used in deducing the elevation expression of ship wave was adopted, and an asymptotic solution of velocity field of ship waves on an inviscid fluid that is perfectly fit for the region inside and outside the critical lines was obtained. It is very convenient to be used in SAR technique.

关键词： ship waves velocity field remote sensing,asymptotic solution

Description of the Triaxial Strongly Deformed Bands in 160,161Tm and 163Tm

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Chinese Physics Letters 2010年第6期27卷 48-51页

作者： ZHANG Da-Li ding Bin-gang Department of Physics Huzhou Teacher's College Huzhou 313000

Properties of the triaxial strongly deformed （ TSD） bands of 160,161 Tin and 163Tm are investigated systematically within the supersymmetry scheme including ma^y-body interactions and a perturbation possessing SO（5）（or SU（5）） symmetry on the rotational symmetry. Quantitatively good results of the γ-ray energies, the dynamical moments of inertia and the spin of the TSD bands in 160,161Tm and 163Tm are obtained. The calculation shows that competition between the pairing and anti-pairing effects exist in these TSD bands. Meanwhile, the SU（3） symmetry in TSD bands is broken more seriously than that in superdeformed bands.

关键词： ENERGY bands SUPERSYMMETRY (Physics) COLLISIONS (Nuclear physics) PERTURBATION (Quantum dynamics) QUANTITATIVE research MOMENTS of inertia

Numerical simulation of pollution process due to resuspension of bed materials adsorbing pollutants in alluvial rivers

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Science China(Technological Sciences) 2015年第7期58卷 1280-1288页

作者： ding yun XIAO Yang ZHONG DeYu State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University College of Water Conservancy and Hydropower Engineering Hohai University State Key Laboratory of Hydroscience and Engineering Tsinghua University

Resuspension of bed materials absorbing pollutants potentially poses unpredictable challenges to water management in alluvial rivers and its mechanism of transport has not been widely *** this study,a transport equation that defines the movement of pollutants adsorbed on the bed materials in the active bed layer is established,on the basis of mass conservation law and continuum *** transport equation is coupled into the 1-D mathematical model to numerically investigate water pollution process due to the scour of the bed sediment adsorbing *** with the situation in which the dynamics of the active bed layer is not considered indicate that the periodical evolution of the bed layer plays an innegligible role in the pollution process due to sediment ***,comparisons of the results with available experimental observations are presented,and fairly good agreement is obtained.

关键词： resuspension pollutants alluvial rivers active bed layer

Development,differentiation,and material distribution of secondary phloem in Pinus massoniana

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Journal of Forestry Research 2023年第6期34卷 1915-1926页

作者： Chao Yang Fuhua Fan gang Xu Guijie ding Institute for Forest Resources and Environment of Guizhou Province Guizhou UniversityGuiyang 550025People’s Republic of China Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province Guiyang 550025People’s Republic of China College of Forestry Guizhou UniversityGuiyang 550025People’s Republic of China

Phloem is the woody tissue for the storage and long-distance transport of organic matter in vascular *** reveal the process of secondary phloem development and differentiation in Pinus massoniana,the structure of the secondary phloem and the distribution of cell inclusions were observed by histochemical staining,spontaneous fluorescence of phenolic substances and cell *** on tissue development and differentiation characteristics of *** secondary phloem,the secondary phloem development was divided into seven stages:the functional phloem stage;the sieve cell lignification stage;the phloem ray bending stage;the parenchyma cell dedifferentiation and division stage;the dedifferentiated parenchyma cell population formation stage;the periderm alteration stage,and the rhytidome *** analysis of cell morphology and inclusion distribution characteristics showed that the sieve cells were deformed during lignification,the quantities of parenchyma and resin ducts increased with development and the crystal content in cells,as well as the levels of sugars and lipids in phloem parenchyma cells,increased with *** results indicate that the *** phloem first lost longitudinal transport function and then increased its secretory,storage and mechanical ***,the parenchyma differentiated into the cortex and periderm,and the tissue outside the new periderm lignified to form the rhytidome,which fully developed into the protective tissue of the stem.

关键词： P.massoniana Phloem Periderm Lignifi cation Inclusion

A Reliability Analysis of Calculated Results for Odd-Even and Odd-Odd Nuclei in Relativistic Mean-Field Theory

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Communications in Theoretical Physics 2006年第1X期46卷 113-118页

作者： ding Bin-gang ZHANG Da-Li LU ding-Hui School of Science Huzhou Teachers College Huzhou 313000 China Institute of Modern Physics Zhejiang University Hangzhou 310027 China

We calculate the binding energies of Ni, Cu, Xe, Cs, Pt, Au, Np, Pu isotope chains using two interaction parameter sets NL-3 and NL-Z, and compared the relative errors of the even-even nuclei with those of odd-even nuclei and odd-odd nuclei. We find that the errors of binding energy of odd-even and odd-odd nuclei are not bigger than the one of even-even nuclei. The result shows that comparing with even-even nuclei, there is no systematic error and approximation in the calculations of the binding energy of odd-even and odd-odd nuclei with relativistic mean-field theory. In addition, the result is explained theoretically.

关键词： relativistic mean-field theory binding energy even-even nuclei odd-even nuclei odd-odd nuclei

The influences of convective overshooting and semiconvection on the chemical evolution of massive stars

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Research in Astronomy and Astrophysics 2014年第8期14卷 979-991页

作者： Cai-yun ding Yan Li yunnan Observatories Chinese Academy of Sciences Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of Sciences University of Chinese Academy of Sciences

In massive stars, convection in the interior is different from that of inter- mediate and small mass stars. In the main-sequence phase of small mass stars, there is a convective core and a radiative envelope, between which are the radiative inter- mediate layers with uneven chemical abundances. Semiconvection would occur in the intermediate layers between the convective core and the homogeneous envelope in massive stars. We treat core convective overshooting and semiconvection together as a process. We found that when decreasing overshooting, the semiconvection is more pronounced. In these two processes, we introduce one diffusive parameter D, which is different from other authors who have introduced different parameters for these two zones. The influences of the turbulent diffusion process on chemical evolution and other quantities of the stellar structure are shown in the present paper.

关键词： stars evolution -- stars abundances -- convection -- diffusion

Borel Equivalence Relations between l_1and l_p

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Acta Mathematica Sinica,English Series 2013年第12期29卷 2391-2396页

作者： Long yun ding Zhi YIN School of Mathematical Sciences and LPMC Nankai University

In this paper, we show that, for each p 〉 1, there are continuum many Borel equivalence relations between Rω/l1 and Rω/p ordered by ≤B which are pairwise Borel incomparable.

关键词： Borel equivalence relation Borel reducibility

A Biosurfactant-containing TSD Strategy to Modify Bovine Pericardial Bioprosthetic Valves for Anticalcification

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Chinese Journal of Polymer Science 2023年第1期41卷 51-66页

作者： Cai-yun Gao gang Wang Lin Wang Qun-Song Wang Han-Cheng Wang Lin Yu Jian-Xiong Liu Jian-Dong ding State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai200438China R&D Center Lifetech Scientific(Shenzhen)Co.Ltd.Shenzhen518057China R&D Center Lifevalve Medical Scientific Co.Ltd.Shenzhen518057China

Bioprosthetic heart valves(BHVs)are important for transcatheter valve *** commercial BHVs on the market are basically porcine or bovine pericardium(BP)crosslinked with glutaraldehyde(GA).Simply applying GA to BHVs can enhance mechanical stability,but cannot alleviate in vivo *** this work,we developed a two-step decellularization(TSD)strategy to modify this biomacromolecular network,in which BP was post-treated,as the second step of decellularization,with a mild biosurfactant n-dodecyl-β-D-maltoside in a mixture of isopropanol and phosphate-buffered saline after the first step of traditional decellularization and GA *** TSD-treated BP exhibited not only low cytotoxicity and excellent mechanical properties in vitro,but also low immune responses and significant anticalcification in *** 60 days of subcutaneous implantation in the back of Wistar rats,the calcium content was,as quantified with an inductively coupled plasma optical emission spectrometer,only 1.1µg/mg compared to 138.6µg/mg in the control group without the *** addition,collagen fibrils were observed with field emitting scanning electron microscopy(SEM),and the morphology and composition of the calcified sites resulting from in vivo biomineralization were studied with SEM with energy dispersive spectroscopy and also X-ray *** study proposes a facile yet effective anticalcification strategy for the modification of the bovine pericardial bioprosthetic heart valve,a natural biomacromolecular network.

关键词： Heart valve Anticalcification Collagen In vivo biomineralization Transcatheter aortic valve implantation(TAVI) Extracellular matrix Biomacromolecular network Biosurfactant Bovine pericardium