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PROPERTIES OF THREE-DIMENSIONAL MOVEMENT OF SANDY WATER DISCHARGED INTO A LAkE

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Journal of Hydrodynamics 2001年第2期13卷 72-76页

作者： deng, Y. Li, J. Li, k.F. Zhao, W.Q. State key Lab. of High Speed Flow Sichuan Univ. Chengdu 610065 China

A Random Trajectory Model (RTM) for solid-liquid two-phase flow based on the Lagrangian Method is presented in this paper. The effects of water drag force, pressure gradient force, buoyancy and virtual mass force on the particles were included and the turbulent dispersion was modeled by random method. Three-dimensional k-Ε model was used to calculate the flow field. A pumped-storage power station, with a natural lake as its upper pool, was taken as a case for the study. Averaged movement trajectories, velocities and the volume-concentration distributions for 5 groups of sediment particles, were predicted with RTM. The possible silted locations in the lake were also predicted.

关键词： Boundary conditions Computer simulation Lakes Sand Three dimensional Two phase flow Velocity

CuZr-based bulk metallic glass and glass matrix composites fabricated by selective laser melting

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Journal of Materials Science & Technology 2021年第22期81卷 139-150页

作者： Liang deng Long Zhang konrad kosiba RenéLimbach Lothar Wondraczek Gang Wang Dongdong Gu Uta kühn Simon Pauly Leibniz IFW Dresden Institute for Complex MaterialsHelmholtzstraße 20D-01069DresdenGermany Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Otto Schott Institute of Materials Research University of JenaFraunhoferstraße 6D-07743 JenaGermany Laboratory for Microstructure Institute of MaterialsShanghai UniversityShanghai200444China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing210016China University of Applied Sciences Aschaffenburg Würzburger Straße 45D-63743AschaffenburgGermany

Monolithic bulk metallic glass and glass matrix composites with a relative density above 98%were produced by processing Cu_(46)Zr_(46)Al_(8)(at.%)via selective laser melting(SLM).Their microstructures and mechanical properties were systematically examined.B2 CuZr nanocrystals(30-100 nm in diameter)are uniformly dispersed in the glassy matrix when SLM is conducted at an intermediate energy *** B2 CuZr nanocrystals nucleate the oxygen-stabilized big cube phase during a remelting *** presence of these nanocrystals increases the structural heterogeneity as indirectly revealed by mircrohardness and nanoindentation *** corresponding maps in combination with calorimetric data indicate that the glassy phase is altered by the processing *** the formation of crystals and a high overall free volume content,all additively manufactured samples fail at lower stress than the as-cast glass and without any plastic *** inherent brittleness is attributed to the presence of relatively large pores and the increased oxygen content after selective laser melting.

关键词： Selective laser melting CuZr-based glass Bulk metallic glass matrix composites Phase formation Mechanical properties

Enhanced ion conductivity and electrode–electrolyte interphase stability of porous Si anodes enabled by silicon nitride nanocoating for high-performance Li-ion batteries

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Journal of Energy Chemistry 2022年第6期31卷 616-625,I0017页

作者： Shixiong Mei Siguang Guo Ben Xiang Jiaguo deng Jijiang Fu Xuming Zhang Yang Zheng Biao Gao Paul k Chu kaifu Huo The State key Laboratory of Refractories and Metallurgy and Institute of Advanced Materials and Nanotechnology Wuhan University of Science and TechnologyWuhan 430081HubeiChina Wuhan National Laboratory for Optoelectronics(WNLO) School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074HubeiChina Department of Physics Department of Materials Science&EngineeringDepartment of Biomedical EngineeringCity University of Hong KongTat Chee AvenueKowloonHong KongChina

Silicon (Si) is a promising anode material for next-generation high-energy lithium-ion batteries (LIBs) due to its high ***,the large volumetric expansion,poor ion conductivity and unstable solid electrolyte interface (SEI) lead to rapid capacity fading and low rate ***,we report Si nitride (SiN) comprising stoichiometric Si_(3)N_(4) and Li-active anazotic SiN_(x) coated porous Si (p-Si@SiN)for high-performance anodes in *** ant-nest-like porous Si consisting of 3D interconnected Si nanoligaments and bicontinuous nanopores prevents pulverization and accommodates volume expansion during *** Si_(3)N_(4) offers mechanically protective coating to endow highly structural integrity and inhibit superfluous formation of *** fast ion conducting Li_(3)N generated in situ from lithiation of active SiN_(x) facilitates Li ion ***,the p-Si@SiN anode has appealing electrochemical properties such as a high capacity of 2180 mAh g^(-1)at 0.5 A g^(-1) with 84%capacity retention after 200cycles and excellent rate capacity with discharge capacity of 721 mAh g^(-1) after 500 cycles at 5.0 A g^(-1).This work provides insights into the rational design of active/inactive nanocoating on Si-based anode materials for fast-charging and highly stable LIBs.

关键词： Silicon anode Ion conductivity Si_(3)N_(4) SiN_(x) Lithium-ion battery

A new Late Miocene Hystrix(Hystricidae,Rodentia)from Turkey

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Integrative Zoology 2024年第3期19卷 548-563页

作者： kazım HALAÇLAR Ayla SEVIM EROL Tolga kÖROG˘LU Paul RUMMY Tao deng Serdar MAYDA Natural History Application and Research Centre Ege UniversityTurkey key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijingPeople’s Republic of China Department of Anthropology Faculty of Languages and HistoryGeographyAnkara UniversityTurkey Department of Biology Faculty of SciencesEge UniversityTurkey

TheÇorakyerler fossil locality in Anatolia reveals unique faunal *** study introduces Hystrix kayae ***.,a new Late Miocene porcupine initially classified as Hystrix *** et al.,*** finding expands our knowledge of Late Miocene Anatolian porcupines,bringing the total number of known species to *** *** larger than Hystrix aryanensis and exhibits greater upper cheek tooth crown *** cheek tooth morphology differs from Hystrix depereti,and it possesses distinctive U-shaped choanae unlike Hystrix ***Çorakyerler locality may predate sites with *** and *** but aligns temporally with Hystrix parvae *** study enhances our understanding of Late Miocene porcupine diversity in Anatolia,emphasizing the importance ofÇorakyerler in unraveling the evolutionary history of these fascinating mammals.

关键词： Çorakyerler Hystrix Late Miocene paleobiogeography Turkey

Phase formation of a biocompatible Ti-based alloy under kinetic constraints studied via in-situ high-energy X-ray diffraction

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Progress in Natural Science:Materials International 2020年第3期30卷 432-436页

作者： konrad kosiba André Rothkirch Junhee Han Liang deng Benjamin Escher Gang Wang Uta kühn Jozef Bednarcik Leibniz IFW Dresden Institute for Complex Materials DESY Photon Science 3. korea Institute of Industrial Technology (kITECH) Korea Institute for Rare Metals 4. Fraunhofer Institute for Photonic Microsystems IPMS Department of Engineering 5. Laboratory for Microstructures Institute of Materials Shanghai University 6. J. Safarik University in Kosice Institute of Physics Department of Condensed Matter Physics

The biocompatible Ti40Cu34Pd14Zr10Sn2bulk metallic glass was rapidly heated,also known as flash-annealed,at varying heating rates up to 1579 k/***,the phase formation was characterized via advanced in-situ highenergy X-ray *** has been found that the evolving kinetic constraints can be used as a tool to deliberately alter the crystalline phase *** novel processing route permits to select phases to crystallize to a predefined fraction and,thus,to potentially design the microstructure of materials according to a specified ***,flash-annealing poses a unique synthesis route to design materials with,for instance,good biomechanical compatibility.

关键词： High-energy X-ray diffraction Flash-annealing Phase formation Metallic glass Biocompatible Ti alloy

THEORETICAL INVESTIGATION ON BY-ONLY-CURRENT ELECTROMAGNETIC SEPARATION OF INCLUSION FROM MOLTEN METALS

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Acta Metallurgica Sinica(English Letters) 2002年第5期15卷 416-424页

作者： B. W. Zhang, Z.M. Ren , Y.B. Zhong, k. deng and k.D. XuShanghai Enhanced Laboratory of Metallurgy,Shanghai University, Shanghai 200072, China Shanghai Enhanced Laboratory of Metallurgy Shanghai University

The electromagnetic field under applied AC and DC current in round and rectangular pipe was systematically investigated, then a concept of 'equivalent current density' was proposed for evaluating the inhomogeneous electromagnetic pinch force, and the mono-component removal efficiency and the overall removal efficiency of inclusion were formulated. It is founded that flat pipe is superior to round pipe for the electromagnetic removal of inclusion, and DC current can get a higher removal efficiency than A C current due to absence of skin phenomenon. Under usual condition, a removal efficiency of 52% for 10μm inclusion or more than 92% for 20μm inclusion can be achieved by imposing a current density of 3×106A/m2 in a flat pipe.

关键词： inclusion electromagnetic separation efficiency of removal equivalent current density

keep swimming but stop peeing in the pools

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Journal of Environmental Sciences 2017年第3期29卷 322-325页

作者： Qi Zheng Lindsay k.Jmaiff Blackstock Wenchao deng Hailin Wang X.Chris Le Xing-Fang Li key Laboratory of Optoelectronic Chemical Materials and Devices Ministry of EducationInstitute of Environment and HealthJianghan University Division of Analytical and Environmental Toxicology Department of Laboratory Medicine and PathologyFaculty of Medicine and DentistryUniversity of Alberta State key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of Sciences

Swimming is excellent exercise and offers many health benefits. However, the ＂chlorine smell＂ in swimming pools may be a turn-off for some people. Although this smell is often thought to be of chlorine, it actually comes from volatile compounds that are produced from unintended reactions between disinfectants （e.g., chlorine） and organic matter in the water （Li and Blatchley, 2007; Zwiener et al., 2007; Schmalz et al., 2011; Daiber et al., 2016）. Body fluids, such as sweat and urine, are among the sources of this organic matter that contribute to the formation of disinfection byproducts （DBPs）（Richardson et al., 2007; Arnaud, 2016; Tang et al., 2016）.

关键词： Swimming poolAcesulfame potassium (ACE)Artificial sweetenersDisinfection byproducts (DBPs)Dissolved organic carbon (DOC)Human urineSwimmer hygieneWater quality

Diagnostic and Prognostic Value of Plasma Factor V Activity and Parameters in Thrombin Generation for Disseminated Intravascular Coagulation in Patients with Hematological Malignancies

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Current Medical Science 2019年第4期39卷 546-550页

作者： Hai-ming k0U Xiao-ping ZHANG Man-zhi WANG Jun deng Heng MEI Yu HU Institute of Hematology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Hubei Clinical and Research Center of Thrombosis and Hemostasis Wuhan 430022China

In this study,we used plasma factor V activity and parameters of the thrombin generation test to discuss their diagnostic and prognostic value for disseminated intravascular coagulation (DIC) in patients with hematological malignancies.A total of 164 patients who were diagnosed with hematological malignancies in the Department of Hematology,Union Hospital,between Apr 2014 and Dec.2014 were enrolled in this *** were 131 patients in the study group and 33 patients in the control group in terms of the laboratory results for *** patients in the study group were divided into a DIC subgroup (n=59) and a non-DIC subgroup (n=72) based on the International Society of Thrombosis and Hemostasis (ISTH) Integral System,and they were divided into four subgroups [score ≤3 (n=35),score=4 (n=37),score=5 (n=47),and score >6 (n=12)] according to ISTH *** 28-day mortality as the endpoint,the patients in the study group were divided into a survival subgroup (n=111) and a non-survival subgroup (n=20).The results showed that the plasma factor V activity was significantly weaker,and lag time and time to peak were significantly shorter in the study group than in the control group (Pk and endogenous thrombin potential (ETP) were significantly decreased in the DIC subgroup as compared with those in the non-DIC subgroup (Pk,ETP,and ttPeak,only the factor V activity was significantly decreased in the nonsurvival subgroup compared with the survival subgroup (Pk decreased *** binary logistic regression analysis revealed that PLT,D-dimer,factor V activity and ETP had linear relationship with DIC diagnosed by ISTH Integral *** DIC diagnosed by ISTH Integral System as the endpoint,the area under curve (AUC) of factor V activity was found to be similar to that of blood platelet count (PLT) and prothrombin time (PT).In conclusion,facto

关键词： disseminated intravascular coagulation hematological malignancies factor V activity thrombin generation test

Contrasting habitat use and conservation status of Chinese-wintering and other Eurasian Greater White-fronted Goose(Anser albifrons)populations

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Avian Research 2021年第4期12卷 600-611页

作者： Xueqin deng Qingshan Zhao Junjian Zhang Andrea kölzsch Diana Solovyeva Inga Bysykatova-Harmey Zhenggang Xu Helmut kruckenberg Lei Cao Anthony David Fox State key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 101408China Department of Migration Max Planck Institute of Animal BehaviorRadolfzellGermany Institute for Wetlands and Waterbird Research E.V.(IWWR) Verden(Aller)Germany Institute of Biological Problems of the North MagadanRussia Institute of Biological Problems of Cryolitozone YakutskRussia key Laboratory of National Forestry and Grassland Administration On Manage-ment of Western Forest Bio-Disaster College of ForestryNorthwest A&F Uni-versityYangling 712100China Department of Ecoscience Aarhus UniversityAarhusDenmark

Background:GPS/GSM tracking data were used to contrast use of(i)habitats and(ii)protected areas between three Arctic-nesting Greater White-fronted Geese(Anser albifrons,GWFG)populations throughout the annual *** wished to demonstrate that the East Asian Continental Population(which winters on natural wetlands in the Chinese Yangtze River floodplain and is currently declining)avoids using farmland at multiple wintering *** also gath-ered tracking evidence to support general observations from two increasing population of GWFG,the North Sea-Baltic(which winters in Europe)and the West Pacific(which winter in korea and Japan)winter mostly within farmland landscapes,using wetlands only for safe night ***:We tracked 156 GWFG throughout their annual cycle using GPS/GSM transmitters from these three popu-lations to determine migration routes and stopover staging *** used Brownian Bridge Movement Models to generate summer,winter and migration stopover home ranges which we then overlaid in GIS with land cover and protected area boundary at national level to determine habitat use and degree of protection from nature conserva-tion designated ***:Data confirmed that 73%of European wintering GWFG homes ranges were from within farmland,com-pared to 59%in Japan and korea,but just 5%in China,confirming the heavy winter use of agricultural landscapes by GWFG away from China,and avoidance of farmland at multiple sites within the Yangtze River *** same GWFG used farmland in northeast China in spring and autumn,confirming their experience of exploiting such habi-tats at other stages of their annual *** wintering birds showed the greatest overlap with protected areas of all three populations,showing current levels of site safeguard are failing to protect this ***:Results confirm the need for strategic planning to protect the East Asian Continental GWFG *** the site protection network in place to p

关键词： Farmland feeding Habitat use Migration National nature reserve Protected areas Staging areas