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Analysis of land use change and its driving force in the Longitudinal Range-Gorge Region

Science Bulletin 2007年第S2期 10-20页

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

The research on land use degree,land use change rate as well as regional difference of various land use types in the southwest Longitudinal Range-Gorge Region(LRGR)has been carried out on the re- gional and county *** the view of social economy,we have also analyzed the driving mecha- nism of land use change and the corresponding spatial scopes of various driving forces in the research *** research result indlcetse that,on the regional scale,farmland,forest and grassland compose the main body of land use in the LRGR,and the structural change of land use shows that grassland declines sharply,farmland increases and forest keeps *** the county scale,the land use is characterized by that land use level is relatively low,and the land use degree,the comprehensive variation rate and the relative variation rate among different land use types still *** analysis,the land use changes in the LRGR are mainly driven by investment Intensity of manpower and physical resources,the social economic output level,the intensity of natural disasters disturbance and educa- tional level of ***,the regionalism exists in the influence scope of different driving force types.

关键词： land use land use degree land use change rate driving force Longitudinal Range-Gorge Region(LRGR)

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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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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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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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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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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 college of Animal Science and Animal Medicine Inner Mongolia Agricultural University Huhhot China college of Biotechnology and Bioengineering Inner Mongolia Agricultural University Huhhot 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 college of Physical Science and Technology Inner Mongolia University Hohhot China Key Laboratory of Physics and Chemistry of Functional Materials College of Physics and Electronic Information Inner Mongolia Normal University Hohhot 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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Molecular and Crystal Structure of Hexacobalt Carbonyl Cluster Containg Twin Co_3S(CO)_7 Fragments Linked by a Novel Phosphido-Thiolato Ligand as Backbone

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Chinese Chemical Letters 1997年第5期8卷 461-464页

作者： Zhi Rong ZHAO Xiang HU Shu Tang LIU and Qi Wang LIU(Department of Chedristry, inner mongolia university, huhhot 010021) Department of Chemistry Inner Mongolia University Huhhot 010021 China

Reaction of dimers of (R) thionophosphine sulfide (R = P - C6H4OMe,SMe ) with Co, (CO), yields the novel hexacobalt cluster [Co'(μ3, -S)2, (CO) 14 (μ4 -μ4- and the trinuclear clusterPSCH,)J 2' In 1, tw0 Co3S(C0)7 u... 详细信息

关键词： Twin Co CO Fragments Linked by a Novel Phosphido-Thiolato Ligand as Backbone Molecular and Crystal Structure of Hexacobalt Carbonyl Cluster Containg Twin Co3S

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Some constructions of projectively flat Finsler metrics

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Science china Mathematics 2006年第5期49卷 703-714页

作者： MO Xiaohuan, SHEN Zhongmin & YANG Chunhong LMAM, School of Mathematical sciences, Peking university, Beijing 100871, china Department of Mathematical sciences, Indiana university-Purdue university, Indianapolis, IN 46202-3216, USA Department of Mathematics, inner mongolia university, Hohhot 010021, china LMAM School of Mathematical Sciences Peking University Beijing China Department of Mathematical sciences Indiana University-Purdue University Indianapolis USA Department of Mathematics Inner Mongolia University Hohhot China

In this paper, we find some solutions to a system of partial differential equations that characterize the projectively flat Finsler metrics. Further, we discover that some of these metrics actually have the zero flag ... 详细信息

关键词： Randers metric, (α,β)-metric, Finsler metric, projectively flat metric, Scurvature.

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Milestone of the meridian science──970th anniversary of the Chinese Bronze Statue of Meridian

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Chinese Science Bulletin 1998年第5期43卷 353-362页

作者： ZHANG Renji college of life sciences, Peking university, Beijing 100871, china college of life sciences Peking University Beijing 100871 China

For more than a thousand years, Chinese people were aware of the transmitted sensations by the application of needles on the body surface. This practice is called acupuncture. Acupuncture had been recorded and transcribed in writings and in drawings, until finally the acupoints were inscribed onto a bronze statue. The bronze statue was called the Meridian Figure. Deeply embodied in the bronze statue is a tripartite confrontation-prism representation of the humans body. This concept was a great scientific achievement in ancient china. The author traces the history of Meridian science described in traditional Chinese medical terms. Then he explores a clear analogy of the meridian pathway (MP) phenomenon. In a model system, by using a simple segmental in vertebrate, certain parallels can be demonstrated with the meridian concept. For example, the author demonstrated a clear correlation rule among the central mechano-sensory channels, and characteristics of positional discrimination in individual nerve cells from different receptive field inputs. The evidence suggests that the MP phenomenon is an objective neurobiological response. To clarify the research objective in this paper, the author suggests that the MP is a bi-directional pathway along which a positional message signal is transmitted. This phenomenon is evoked by physical stimulation, transmitted linearly across the human body segments, and is perceived by the brain. The MP consists of low resistance paths, is connected by the liquid media contained in the apposite membranous structure. At the cellular level, the regulation functions of MP must pass through along this low resistance path. Two aspects of the modern Meridian research are the functional regulation and the mechanism of intercellular liquid modulation at the nanometer level.

关键词： meridian pathway tripartite confrontation-prism coordinate position discriminative recognition apposite membranous structure.

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