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A distributed Grid-Xinanjiang model with integration of subgrid variability of soil storage capacity

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Water Science and Engineering 2016年第2期9卷 97-105页

作者： Wei-jian Guo Chuan-hai Wang teng-fei ma Xian-min Zeng Hai Yang PowerChina Huadong Engineering Corporation Limited Hangzhou 311122 China State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China College of Hydrology and Water Resources Hohai University Nanjing 210098 China

Realistic hydrological response is sensitive to the spatial variability of landscape properties. For a grid-based distributed rainfall-runoff model with a hypothesis of a uniform grid, the high-frequency information within a grid cell will be gradually lost as the resolution of the digital elevation model(DEM) grows coarser. Therefore, the performance of a hydrological model is usually scale-dependent. This study used the GridXinanjiang(GXAJ) model as an example to investigate the effects of subgrid variability on hydrological response at different scales. With the aim of producing a more reasonable hydrological response and spatial description of the landscape properties, a new distributed rainfall-runoff model integrating the subgrid variability(the GXAJSV model) was developed. In this model, the topographic index is used as an auxiliary variable correlated with the soil storage capacity. The incomplete beta distribution is suggested for simulating the probability distribution of the soil storage capacity within the raster grid. The Yaogu Basin in China was selected for model calibration and validation at different spatial *** demonstrated that the proposed model can effectively eliminate the scale dependence of the GXAJ model and produce a more reasonable hydrological response.

关键词： Scale effect Subgrid variability Soil storage capacity Incomplete beta distribution GXAJSV model

Microstructure and mechanical properties of Ti44Al6Nb1Cr2V alloy after gaseous hydrogen charging at 1373-1693 K

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Rare Metals 2023年第2期42卷 664-671页

作者： teng-fei ma Rui-Run Chen De-Shuang Zheng Jing-Jie Guo Hong-Sheng Ding Yan-Qing Su Heng-Zhi Fu School of materials Science and Engineering Harbin Institute of TechnologyHarbin150001China

The hydrogenation behavior of Ti44A16Nb1Cr2V(at%)alloy at temperature range of 1373-1693 K and its effect on microstructure and room-temperature mechanical properties were studied systematically in this *** results show that hydrogen content increases with the increase in temperature,and the maximum hydrogen content is 0.126 wt%at 1693 *** heat of solution of hydrogen is calculated as 82.9 kJ·mol^(-1)by curve fitting,indicating that hydrogen absorptionin TiAl alloys is *** promotes the lamellar colony size because hydrogen promotes the diffusion of *** stabilizes B2phase during hydrogenation resulting in more residual B2phase in the hydrogenated *** nanohardness and elastic modulus decrease after hydrogenation due to that hydrogen weakens the *** Ti44A16Nb1Cr2V alloy exhibits higher plasticity and lower flow stress hydrogenation with 0.039 wt%H,and the ultimate compressive strength decreases from 1220 to 1130 MPa,while the fracture strain is enhanced by 26%.

关键词： TiAl alloys Hydrogenation Hydrogen content Nanohardness Compressive property

As-cast microstructure and properties of non-equal atomic ratio TiZrTaNbSn high-entropy alloys

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China Foundry 2022年第6期19卷 481-488页

作者： teng-fei ma Qiao-yu Li Yu-liang Jin Xi Zhao Xiao-hong Wang Duo Dong Dong-dong Zhu Key Laboratory of Air-driven Equipment Technology of Zhejiang Province Quzhou UniversityQuzhou 324000ZhejiangChina Northwest Institute for Nonferrous Metal Research Xi'an 710016China

High-entropy alloys have been proved to be potential candidate materials in the biomedical field due to their balanced mechanical properties and excellent *** effects of atomic ratios on the as-cast microstructural evolution,mechanical properties,and electrochemical property of TiZrTaNbSn high-entropy alloys were studied *** crystal structure of TiZrTaNbSn high-entropy alloys is single BCC phase,and the microstructural evolution is based on atomic *** dendric structure,peritectic structure,pseudo eutectic and equiaxed grain,which are associated with element segregation,can be obtained by non-equal atomic ***_(30)Zr_(20)Ta_(20)Nb_(20)Sn_(10)alloy demonstrates a high compressive strength and fracture strain,which are 2,571.8 MPa and 12%,respectively,and the fracture behavior is quasicleavage *** Ti_(45)Zr_(35)Ta_(5)Nb_(5)Sn_(10),Ti_(30)Zr_(20)Ta_(20)Nb_(20)Sn_(10)and Ti_(35)Zr_(25)Ta_(15)Nb_(15)Sn_(10)alloys show excellent corrosion resistance according to Nyquist diagram,polarization curves and corrosion *** with TiZrTaNbSn alloy,the corrosion rate of Ti_(45)Zr_(35)Ta_(5)Nb_(5)Sn_(10) alloy increases by about 98.9%.It can be concluded that non-equal atomic ratios are effective for microstructure control and performance optimization.

关键词： high-entropy alloy biomedical materials microstructure electrochemical property

GPa-level pressure-induced enhanced corrosion resistance in TiZrTaNbSn biomedical high-entropy alloy

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China Foundry 2024年第3期21卷 265-275页

作者： Xiao-hong Wang Yu-lei Deng Qiao-yu Li Zhi-xin Xu teng-fei ma Xing Yang Duo Dong Dong-dong Zhu Xiao-hong Yang Key Laboratory of Air-driven Equipment Technology of Zhejiang Province Quzhou UniversityQuzhou 324000ZhejiangChina School of materials Science and Engineering Taizhou UniversityTaizhou 318000ZhejiangChina

TiZrTaNb-based high-entropy alloys(HEAs)are research frontier of biomedical materials due to their high hardness,good yield strength,excellent wear resistance and corrosion ***,as an essential trace element in the human body that plays a significant role in physiological *** has stable chemical properties and a low elastic *** this study,a new material,TiZrTaNbSn HEAs,was proposed as a potential biomedical *** Ti_(35)Zr_(25)Ta_(15)Nb_(15)Sn_(10)biomedical high-entropy alloys(BHEAs)were successfully prepared through an arc melting furnace and then remelted using a German high-temperature and high-pressure apparatus under GPa-level(4 GPa and 7 GPa).The precipitation behavior of the needle-like HCP-Zr_(5)Sn_(3)phase that precipitates discontinuously at the grain boundary was successfully *** phase constitution,microstructure,and corrosion resistance of the alloy were *** results show that the needle-like HCP-Zr_(5)Sn_(3)phase is eliminated and the(Zr,Sn)-rich nano-precipitated phase is precipitated in the microstructure under high pressure,which leads to the narrowing of grain boundaries and consequently improves the corrosion resistance of the *** addition,the formation mechanisms of(Zr,Sn)-rich nanoprecipitates in BHEAs were *** Zr and Sn dissolve in the matrix due to the effect of high pressure,during the cooling process,they precipitate to form a(Zr,Sn)-rich nano-precipitated phase.

关键词： biomedical HEAs precipitation grain boundary corrosion resistance TiZrTaNbSn

Interaction of major facilitator superfamily domain containing 2A with the blood-brain barrier

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Neural Regeneration Research 2025年第8期20卷 2133-2152页

作者： Yilun ma Taiwei Dong fei Luan Juanjuan Yang Feng Miao Peifeng Wei College of Pharmacy and First Clinical Medical College Shaanxi University of Chinese MedicineXianyangShaanxi ProvinceChina National Drug Clinical Trial Agency The Second Affiliated Hospital of Shaanxi University of Chinese Medicine/Xixian New District Central HospitalXi′anShaanxi ProvinceChina

The functional and structural integrity of the blood-brain barrier is crucial in maintaining homeostasis in the brain microenvironment;however,the molecular mechanisms underlying the formation and function of the blood-brain barrier remain poorly *** major facilitator superfamily domain containing 2A has been identified as a key regulator of blood-brain barrier *** plays a critical role in promoting and maintaining the formation and functional stability of the blood-brain barrier,in addition to the transport of lipids,such as docosahexaenoic acid,across the blood-brain ***,an increasing number of studies have suggested that major facilitator superfamily domain containing 2A is involved in the molecular mechanisms of blood-brain barrier dysfunction in a variety of neurological diseases;however,little is known regarding the mechanisms by which major facilitator superfamily domain containing 2A affects the blood-brain *** paper provides a comprehensive and systematic review of the close relationship between major facilitator superfamily domain containing 2A proteins and the blood-brain barrier,including their basic structures and functions,cross-linking between major facilitator superfamily domain containing 2A and the blood-brain barrier,and the in-depth studies on lipid transport and the regulation of blood-brain barrier *** comprehensive systematic review contributes to an in-depth understanding of the important role of major facilitator superfamily domain containing 2A proteins in maintaining the structure and function of the blood-brain barrier and the research progress to *** will not only help to elucidate the pathogenesis of neurological diseases,improve the accuracy of laboratory diagnosis,and optimize clinical treatment strategies,but it may also play an important role in prognostic *** addition,the effects of major facilitator superfamily domain containing 2A on blood-brain barrier lea

关键词： blood-brain barrier(BBB) caveolin-1 central nervous system docosahexaenoic acid endothelial cells lysophosphatidylcholine major facilitator superfamily domain containing 2A(MFSD2A) transcytosis

Microstructure evolution and hot workability of in-situ synthesized Ti_(2)AlC/TiAl composite

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Transactions of Nonferrous Metals Society of China 2024年第12期34卷 3905-3918页

作者： Yu-peng WANG teng-fei ma Lei LI Long-long DONG Wang-tu HUO Yu-sheng ZHANG Lian ZHOU Northwest Institute for Non-ferrous Metal Research Xi’an 710016China Key Laboratory of Air-driven Equipment Technology of Zhejiang Province Quzhou UniversityQuzhou 324000China

The in-situ micro-nano Ti_(2)AlC particles reinforced TiAl(Ti_(2)AlC/TiAl)composite was fabricated using spark plasma *** hot workability of Ti_(2)AlC/TiAl composite was studied,and the effect of micro-nano particles on flow stress and dynamic recrystallization of composite was *** results showed that the micro-nano Ti_(2)AlC particles included strengthening and softening effects during hot deformation,resulting in the fact that the Ti_(2)AlC/TiAl composite exhibited a higher flow stress and more sufficient dynamic *** strengthening effect was mainly attributed to the Ti_(2)AlC particles induced refinement strengthening and hindered dislocation motion at the initial ***,the precipitation of nano-TiCr2 particles induced by stress concentration during hot deformation also contributed to higher flow stress via impeding dislocation ***,the refined microstructure and dislocation pile-up caused by micro-nano particles during deformation provided more nucleation sites for dynamic recrystallization,which significantly promoted the dynamic recrystallization of the second *** present results reveal that the Ti_(2)AlC/TiAl composite exhibited excellent hot workability,which is important to promote the application of TiAl alloys.

关键词： Ti_(2)AlC/TiAl composite spark plasma sintering hot deformation microstructure evolution dynamic recrystallization

Protective effects of penehyclidine hydrochloride in myocardial ischemic injury via inhibiting the p38maPK activation

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Protective effects of penehyclidine hydrochloride in myocard...

Gene Expression Profiling of the Interactions between maize and it fungal pathogen Fusarium graminearum

第八届海峡两岸心血管科学研讨会

作者： Mei Li,Li-juan Liu,Dong-yu Min,Yun Wang,teng-fei ma, Xing ma,Hong Sun,Shu-ling Gu~* Department of Pharmacology,Xuzhou Medical College,Xuzhou,China

＜正＞Aims Accumulating evidence indicates that penehyclidine hydrochloride（PHC） is beneficial to treatments of brain and lung ischemia/reperfusion（I/R） injury in animal ***,the effects of PHC on myocardial ischemia have not been studied ***,in this study,we investigated the protective effect and functional mechanism of PHC on myocardial I/R *** The infarction size,MDA production and SOD activity were measured to estimate PHC’ s myocardial protection after blocking the left anterior descending coronary artery（LAD） for 30 min and reperfusion for 20 *** blotting was performed in myocardial muscle to determine the expression of Bc Caspase -3,activation of p38maPK and downstream signaling pathways to discover the potential mechanisms of PHC against myocardial *** The myocardial infarction size was strongly reduced after PHC *** the assay,MDA content was significantly reduced,while SOD activity was *** level of the anti - apoptotic protein Bcl-2 was *** proapoptotic protein Caspase -3 was *** phosphorylated p38maPK and ATF2 were down-expressed in rat myocardial *** PHC performs myocardial protective function via inhibiting the activation of p38maPK.

关键词： procyclidine hydrochloride myocardial ischemia-reperfusion injury p38 mitogen activated protein kinases

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Gene Expression Profiling of the Interactions between Maize ...

Multiplexing metal grating coupler based on MIM structure

2010中国青年遗传学家论坛

作者： Wei-Hua Tang,Yan Zhang,Xiao-Wei Zhang,Ting-Lu Yuan,Gang Jiang,teng-fei ma,Dong Zhang Institute of Plant Physiology and Ecology,Shanghai Institutes for Biological Sciences,Chinese Academy of Sciences

The fungal pathogen Fusarium graminearum is the causal agent of several destructive crop diseases including wheat head blight and maize Gibberella stalk *** a fluorescent-tagged Fusarium graminearum transgenic strain,we tracked the pathogen growth and host cell response during the infection *** laser capture microdissection,we isolated Fusarium graminearum at various infection stages and then profiled the fungal gene expression within the host by Fusarium Affymetrix gene chips;we also isolated infected maize cells at various infection stages and profiled host gene expression with maize genome *** dynamic transcriptomes along infection in

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Optoelectronics Letters 2025年

作者： LIU Yang LIU fei ma Yunxia ZHANG Ailing Engineering Research Center of Communication Devices and Technology， Ministry of Education， Tianjin Key Laboratory of Film Electronic and Communication Devices， School of Integrated Circuit Science and Engineering， Tianjin University of Technology

We propose and numerically investigate a multiplexing metal grating coupler based on metal/insulator/metal （MIM） structure. The coupler consists of gold grating/silicon/gold layers， which combines with MIM waveguide， concurrently achieving path multiplexing and wavelength multiplexing through TMnmodes coupling. In visible light band， TM waves are coupled to the upper surface of gold plate， and the coupling efficiency reaches maximum of 31.67% at wavelength of 736 nm. In near infrared and mid infrared bands， TM waves are coupled into MIM waveguide， and the coupling efficiency reaches maximum of 53.57% at wavelength of 2550 nm. There can be four modes of TM0， TM1， TM2and TM3simultaneously in MIM waveguide， which are excited at different wavelengths. The preparation process of the structure designed in this article is simple， with dimensions at the micrometer level， easy to be integrated， and can be applied to be integrated optical circuits.

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