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Study on the spatial differences and its time lag effect on climatic factors of the vegetation in the Longitudinal Range-Gorge Region

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science Bulletin 2007年第S2期 42-49页

作者： BAO YaJing~1 SONG GuoBao~(1,2) LI ZhengHai~(1,3) GAO JiXi~3 L HaiYan~4 WANG HaiMei~5 CHENG Yan~6 XU Tian~7 1 Institute of Bio-Resources and Environment,college of life science,Dalian Nationalities university,Dalian 116600,china 2 college of Resources science and Technology,Beijing Normal university,Beijing 100875,china 3 Innovation Base of Regional Ecology,Chinese Research Academy of Environmental sciences,Beijing 100012,china 4 Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural sciences,Beijing 100081,china 5 inner mongolia Municipality Observatory,huhhot 010051,china 6 college of Ecological Environment,inner mongolia Agricultural university,huhhot 010018,china 7 college of life science,inner mongolia university,huhhot 010021,china

This article analyzes the correlation of NDVI and two meteorological data including temperature and precipitation,and probes the spetial pattern of responding sensitivity of the vegetation to temperature and precipitation *** constructing the NDVIrindex,the relation between vegetation cover and land use in the Longitudinal Range-Gorge Region（LRGR）is *** conclusion is as follows:（1） The time lag effect that vegetation responds to temperature and precipitation change is ***- ferent regions have different delay time corresponding to maximum correlation *** to response time of precipitation and temperature combination,three kinds of temperature-precipi- tation forms are defined,namely,precipitation and temperature in the same time,precipitation prior to temperature and temperature prior to precipitation.（2）The spatial distribution of sensitivity,of which vegetation responses to temperature,is characterized by several high and low scattered correlation *** from temperature,two insensitive regions and two sensitive belts are formed to pre- sent the response of vegetation to precipitation.（3）The NDVIris constructed,which can perfectly re- flect the corresponding relationship between meteorological factors and land use condition in the LRGR.

关键词： land cover meteorological factors effect of time lag spatial correlation population density Longitudinal Range-Gorge Region(LRGR)

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Microscopic and Dynamic Rheological Characteristics of Crumb Rubber Modified Asphalt

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Journal of Wuhan university of Technology(Materials science) 2010年第6期25卷 1022-1026页

作者：王岚 college of Civil Engineering Inner Mongolia University of Technology

A test for crumb rubber modified asphalt containing 20% crumb rubber particles（30 mesh） was performed using a scanning electron microscope（SEM）.The experimental results indicate that the crumb rubber particles are evenly distributed in the *** rate sweep and shear-temperature sweep tests on the crumb rubber modified asphalt at-20-80 ℃ using a dynamic shear rheology（DSR） instrument,were carried *** tests show that the complex modulus decreases with increasing temperature;at equivalent temperature,higher load frequencies lead to a larger complex modulus,and this value increasingly decreases as the temperature increases;the phase angle increases with temperature and decreases as the load frequency *** can be concluded that the rutting resistance limiting temperature of crumb rubber modified asphalt is 78 ℃,and the anti-fatigue limiting temperature is 16 ℃,which shows that the asphalt has preferable rutting resistance characteristics at high temperature,as well as anti-fatigue *** addition,the complex modulus master curve at different temperatures was plotted according to the time temperature equivalence principle,which allows the study of the dynamic state behavior of crumb rubber modified asphalt at a wide range of load frequency.

关键词： crumb rubber modified asphalt microcosmic characteristic rheology characteristic complex modulus phase angle

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Optimizing the product of nonzero functions

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Chinese science Bulletin 1997年第22期42卷 1862-1865页

作者： BA DalahuDepartment of Mathematics, inner mongolia university, Huhehot 010021, china Department of Mathematics Inner Mongolia University Huhehot China

OPTIMIZING problems on the product of a number of functions are generally quite complex,even if each factor function is very simple. In this note, a simplified method is established foroptimizing the product of non-ze... 详细信息

关键词： optimization mathematical programming min-max problem.

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The effect of diffusion on the permanence of Smith population model in a polluted patch

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Communications in Nonlinear science and Numerical Simulation 2001年第4期6卷 217-221页

作者： Zhuoqin YANG, Qishao LU and Zaizhong YANG School of science, Beijing university of Aeronautics and Astronautics, Beijing 100083, china Department of Mathematics, inner mongolia university, inner mongolia 010021, china School of science Beijing Univ. of Aero. and Astronautics Beijing 100083 China Department of Mathematics Inner Mongolia University Inner Mongolia 010021 China

The effect of diffusion on the permanence of population in a polluted patch is studied by setting up a single-population diffusive system in two patches. The analysis focuses on the case that the toxicant input in the polluted patch has a limit value. It is shown that when there is no diffusion and the limit value exceeds a certain value, the population in the polluted patch goes extinct; when the diffusion exists and population diffusive coefficients between the two patches satisfy some conditions, the population of the system goes either permanent or extinct.

关键词： population diffusion system pollution permanence extinction

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Creep Characteristics of Crumb Rubber Modified Asphalt Binder

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Journal of Wuhan university of Technology(Materials science) 2011年第1期26卷 118-120页

作者：王岚 college of Civil Engineering Inner Mongolia University of Technology

Crumb rubber modified asphalt containing 20 percent crumb rubber particles of 30 mesh has been examined by Scanning Electron Microscope （SEM） to observe the microcosmic appearance and the characteristic distribution of crumb rubber particles in asphalt. The SEM pictures reveal that the crumb rubber particles distribute evenly in the asphalt and they are compatible well with asphalt. The shear creep test of crumb rubber modified asphalt was carried out at -10 ℃ and 40 ℃ by Dynamic Shear Rheology （DSR）. The shearing deformation at different temperature and creep stiffness modulus curve at loading stage of crumb rubber modified asphalt have been measured. The stiffness modulus of crumb rubber modified asphalt is much temperature sensitive and it decays much quick at the early stage of loading than normal asphalt. The rate of decay of stiffness modulus is slow at the subsequent stage and stiffness modulus approaches to a stable value at the final stage at a higher temperature. In addition, Burgers model is suitable to describe and simulate experimental results of viscoelastic properties of the crumb rubber modified asphalt.

关键词： crumb rubber modified asphalt creep stiffness modulus rheology model model parameter

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Effect of hormonal status and metabolic changes of restricted ewes during late pregnancy on their fetal growth and development

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science china(life sciences) 2007年第6期50卷 766-772页

作者： GAO Feng1, HOU XianZhi1 & LIU YingChun2 1 college of Animal science and Animal Medicine, inner mongolia Agricultural university, huhhot 010018, china 2 college of Biotechnology and Bioengineering, inner mongolia Agricultural university, huhhot 010018, china 1. college of Animal science and Animal Medicine Inner Mongolia Agricultural University Huhhot 010018 China 2. college of Biotechnology and Bioengineering Inner Mongolia Agricultural University Huhhot 010018 China

This study investigated the effects of hormonal status; metabolic changes of restricted ewes during late pregnancy on the ovine fetus growth; development. One hundred mongolian ewes, synchronized for oestrus; mated, were divided into three groups; offered 0.175 MJME·kgw[0.75]·d[1] (Restricted Group 1, RG1), 0.33 MJME·kgw[0.75]·d[1] (Restricted Group 2, RG2); ad libitum access to feed (Control Group, CG) during their late pregnancy respectively. The results suggested that with the supply of exogenous energy decreasing during late pregnancy, maternal body weight; net body weight loss in RG2; RG1 were lower than those of CG (Ps0.01). The insulin; IGF-1 concentrations of ewes in RG2; RG1 tended to be lower than those of CG (P>0.05), but the GH concentrations in RG2; RG1 were enhanced; there was significant difference between RG1; CG on d 120 of gestation (P0.05). However, the NEFA; FAA concentrations of ewes in RG1 were reduced from d 90 to d 120 of gestation, then enhanced from d 120 to d 140 of gestation. During the late pregnancy, with the supply of nutrition decreasing, the negatively physiological; biochemical maternal reactions to restriction became worse, which significantly reduced the average lamb birth weight; daily growth rate of fetus in RG2 (P<0.05); RG1 (P<0.01).

关键词： late pregnancy restricted ewes fetus growth development

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Exchange bias for ferromagnetic/antiferromagnetic bilayers with the uniaxial anisotropy being misaligned with the exchange anisotropy

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science china(Physics,Mechanics & Astronomy) 2009年第12期52卷 1885-1892页

作者： BAI YuHao1 & YUN GuoHong1,2 1 college of Physical science and Technology,inner mongolia university,Hohhot 010021,china 2 Key Laboratory of Physics and Chemistry of Functional Materials,college of Physics and Electronic Information,inner mongolia Normal university,Hohhot 010022,china 1. college of Physical science and Technology Inner Mongolia University Hohhot 010021 China 2. Key Laboratory of Physics and Chemistry of Functional Materials College of Physics and Electronic Information Inner Mongolia Normal University Hohhot 010022 China

Using the principle of minimal energy and S-W model,the exchange bias for ferromagnetic/antiferro-magnetic bilayers has been investigated when the uniaxial anisotropy is misaligned with the exchange anisotropy. According to the relation between the energy of the bilayer and the orientation of ferro-magnetic magnetization,it is found that the bilayer will be in the monostable state or bistable state when the external field is absent in the initial magnetization state. The monostable state or bistable state of the bilayer,which determines the angular dependence of exchange bias directly,is controlled by the competition between the exchange anisotropy and uniaxial anisotropy. When the applied field is parallel to the intrinsic easy axes and intrinsic hard axes,one of the switching fields of the hysteresis loop shows an abrupt change,while the other keep continuous by analyzing the magnetization reversal processes. Consequently,the exchange bias field and the coercivity will show a jump phenomenon. The numerical calculations indicate that both the magnitude and direction of the exchange anisotropy will significantly affect the angular dependence of exchange bias. The jump phenomenon of exchange bias is an intrinsic property of the bilayer,which is dependent on the interfacial exchange-coupling constant,the orientation of the exchange anisotropy,the thickness and uniaxial anisotropy constant of the ferromagnetic layer.

关键词： monostable state bistable state intrinstic easy axis intrinstic hard axis switching field

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Icosahedral quasicrystals solids with an elliptic hole under uniform heat flow

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Chinese Physics B 2014年第5期23卷 397-403页

作者：李联和刘官厅 college of Mathematics science Inner Mongolia Normal University college of Physical science and Technology Inner Mongolia University inner mongolia Key Laboratory of Nanoscience and Nanotechnology

The complex variable method for solving the two-dimensional thermal stress problem of icosahedral quasicrystals is stated. The closed-form solutions for icosahedral quasicrystals containing an elliptical hole subjected to a remote uniform heat flow are obtained. When the hole degenerates into a crack, the explicit solutions for the stress intensity factors is presented.

关键词： icosahedral quasicrystals thermal stress elliptic hole stress intensity factors

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Discrimination of intra/extracellular sidedness segments of transmembrane proteins

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生物物理学报 2009年第S1期25卷 193-194页

作者： Wei Chen, Liao-fu Luo School of Physical science and Technology, inner mongolia university, Hohhot 010021, china

Topology of the transmembrane protein is closely related to its functions. So, it is desiderated to depict the topology of transmembrane proteins. In this work, an effective approach

关键词： transmembrane protein topology increment of diversity quadratic discriminant analysis

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Size effect of the elastic modulus of rectangular nanobeams:Surface elasticity effect

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Chinese Physics B 2013年第10期22卷 424-428页

作者：姚海燕云国宏范文亮 college of Ordos Inner Mongolia University inner mongolia Key Laboratory of Nanoscience and Nanotechnology college of Physical science and Technology Inner Mongolia University college of Physics and Electronic Information Inner Mongolia Normal University

The size-dependent elastic property of rectangular nanobeams （nanowires or nanoplates） induced by the surface elas- ticity effect is investigated by using a developed modified core-shell model. The effect of surface elasticity on the elastic modulus of nanobeams can be characterized by two surface related parameters, i.e., inhomogeneous degree constant and surface layer thickness. The analytical results show that the elastic modulus of the rectangular nanobeam exhibits a distinct size effect when its characteristic size reduces below 1 O0 nm. It is also found that the theoretical results calculated by a mod- ified core-shell model have more obvious advantages than those by other models （core-shell model and core-surface model） by comparing them with relevant experimental measurements and computational results, especially when the dimensions of nanostructures reduce to a few tens of nanometers.

关键词： size effects elastic modulus nanobeams surface elasticity

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