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The Analysis of CO2 Influence Factors in Tianquan Cave of Xingwen World Geopark

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四川地质学报 2009年第S1期 113-119页

作者： SHUI Wei 1 HU Yi 2 ZHANG Bing 3 SU Zheng-an 4 WANG Chen-yi 2 REN De-you 3 XU Xue-yi 1 CHENG Jin-ping 2(1.Department of Eco-agriculture and Rural Development,sichuan Agricultural university,Ya'an 625014,sichuan 2.College of resources and Environment,sichuan Agricultural university,Ya'an 625014,sichuan 3.school of land and resources,china west normal university,nanchong 637002,sichuan 4.Institute of Mountain Hazards and Environment,Chinese Academy of Sciences and Ministry of Water Conservancy,Chengdu 610041,sichuan)

A Vaisala CARBOCAP Hand-Held Carbon Dioxide Meter GM70 was used to measure CO 2 concentration in Tianquan cave of Xingwen world *** study was done in Tianquan cave during July and August,*** sources include the influence factors of distribution of CO 2:elevation,tourists,cross section and depth of the *** indicated tourists have strong impacts on the CO 2 concentration,while no significant differences could be found among different ***,significant correlation could be found among the depth of cave,the small cross section,the tourist's construction and the CO 2 *** results indicate that the CO 2 concentration in Tianquan cave has no threat to the health of *** results and the data provide a scientific basis for the protection of people's health and the exploitation of cave tourism.

关键词： Xingwen world Geopark Tianquan cave CO 2 concentration Influence factors

Accurate studies on dissociation energies of diatomic molecules

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Science china(Physics,Mechanics & Astronomy) 2007年第5期50卷 611-621页

作者： SUN WeiGuo1, FAN QunChao1 & REN WeiYi1,2 1 Institute of Physics, sichuan university, Chengdu 610065, china 2 Institute of Theoretical Physics, Xihua normal university, nanchong 637002, china Institute of Physics Sichuan University Chengdu 610065 China Institute of Theoretical Physics Xihua Normal University Nanchong 637002 China

The molecular dissociation energies of some electronic states of hydride and N2 molecules were studied using a parameter-free analytical formula suggested in this study and the algebraic method (AM) proposed recently. The results show that the accurate AM dissociation energies DeAM agree excellently with experimental dissociation energies Deexpt, and that the dissociation energy of an electronic state such as the 23Δg state of 7Li2 whose experimental value is not available can be predicted using the new formula.

关键词： algebraic method, diatomic molecule, vibrational energy, dissociation energy

Accurate studies on the full vibrational energy spectra and molecular dissociation energies for some electronic states of N_(2)molecule

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Science china(Physics,Mechanics & Astronomy) 2005年第4期48卷 385-398页

作者： REN Weiyi1,2, SUN Weiguo1, HOU Shilin3 & FENG Hao4 1. Institute of Physics, College of Chemical Engineering, sichuan university, Chengdu 610065, china 2. Institute of Theoretical Physics, Xihua normal university, nanchong 637002, china 3. Department of Physics, china Oceanography university, Qingdao 266003, china 4. College of Physics, sichuan university, Chengdu 610065, china 1. Institute of Physics College of Chemical Engineering Sichuan University 610065 Chengdu China 2. Institute of Theoretical Physics Xihua Normal University 637002 Nanchong China 3. Department of Physics China Oceanography University 266003 Qingdao China 4. College of Physics Sichuan University 610065 Chengdu China

It is usually very difficult to directly obtain molecular dissociation energy De and all accurate high-lying vibrational energies for most diatomic electronic states using modern experimental techniques or quantum theories, and it is also very difficult to give accurate analytical expression for diatomic molecular dissociation energy. This study proposes a new analytical formula for obtaining accurate molecular dissociation energy based on the LeRoy and Bernstein’s energy expression in dissociation limit. A set of full vibrational energy spectra for some electronic states of N2 molecule are studied using the algebraic method (AM) suggested recently, and the corresponding accurate molecular dissociation energies are evaluated using the proposed new formula and high-lying AM vibrational energies. The results show that the AM spectra and the new theoretical dissociation energies agree excellently with experimental data, and thereby providing a new physical approach to generating accurate dissociation energies for electronic states of diatomic molecules.

关键词： vibrational energy, dissociation energy, nitrogen molecule, algebraic method.

Image space analysis for variational inequalities with cone constraints and applications to traffic equilibria

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Science china Mathematics 2012年第4期55卷 851-868页

作者： LI Jun 1,& HUANG NanJing 2 1 College of Mathematics and Information,china west normal university,nanchong 637009,china 2 Department of Mathematics,sichuan university,Chengdu 610064,china 1. College of Mathematics and Information China West Normal University Nanchong 637009 China2. Department of Mathematics Sichuan University Chengdu 610064 China

In this paper,the image space analysis (for short,ISA) is employed to investigate variational in- equalities (for short,VI) with cone *** separation for VI with cone constraints is characterized by using the normal cone to a regularization of the image,and saddle points of the generalized Lagrangian func- ***-type necessary and sufficient optimality conditions for VI with cone constraints are presented by using a separation *** functions and weak sharpness for VI with cone constraints are also investi- ***,the obtained results are applied to standard and time-dependent traffic equilibria introduced by Daniele,Maugeri and Oettli.

关键词： variational inequality image space analysis linear separation necessary and sufficient optimalitycondition traffic equilibrium

LOW ORDER NONCONFORMING RECTANGULAR FINITE ELEMENT METHODS FOR DARCY-STOKES PROBLEMS

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Journal of Computational Mathematics 2009年第Z1期 400-424页

作者： Shiquan Zhang school of Mathematics,sichuan university,Chengdu 610064,china Xiaoping Xie Yangtze Center of Mathematics and school of Mathematics,sichuan university,Chengdu 610064,china Yumei Chen school of Mathematics,sichuan university,Chengdu 610064,china College of Mathematics and Information,china west normal university,nanchong 637002,china

In this paper,we consider lower order rectangular finite element methods for the sin-gularly perturbed Stokes *** model problem reduces to a linear Stokes problemwhen the perturbation parameter is large and degenerates to a mixed formulation of Pois-son’s equation as the perturbation parameter tends to *** propose two 2D andtwo 3D nonconforming rectangular finite elements,and derive robust discretization *** experiments are carried out to verify the theoretical results.

关键词： Darcy-Stokes problem Finite element Uniformly stable

The effects of PMD and PDL on the performance of OOK and DPSK systems

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Optoelectronics Letters 2008年第1期4卷 38-41页

作者： TIAN Xiao-xing, LIU Han-kui , QIU Jun-cai, and YUAN Fu-lai College of Physics and Electronics Information, china west normal university, nanchong 637002, china College of Physics and Electronics Information China West Normal University Nanchong China

Using multiple importance sampling (MIS) technique, the optical communication system performance affected by polariza- tion-mode dispersion (PMD) and polarization-dependent loss (PDL) is simulated numerically. The power penalties and system outage probabilities are obtained for optical communication systems with on-off keying (OOK) or differential phase shift keying (DPSK) modulation. The simulation results show that DPSK always performs better than OOK. When the system has moderate PDL (about 1.5 dB), it is necessary to compensate effectively the fiber PMD in order to enhance the system tolerance to the PMD and PDL. However, the efficiency of PMD compensation will degrade rapidly when the PMD of the whole optical link drops into the low value.

关键词：开关键控系统微分相移键控系统偏振模式散射偏振损失光纤通信

Monitoring the Cultivated Slope land in the Three Gorges Reservoir Area Based on Remote Sensing and GIS

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Wuhan university Journal of Natural Sciences 2006年第4期11卷 915-921页

作者： ZHOU Jieming1, ZHOU Qigang 2, 3 ,HUANG Zhiqin 2, 3, 4 1. The Faculty of Geography and resources Science, sichuan normal university, Chengdu 610066, sichuan, china 2. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, sichuan, china 3. Graduate university of the Chinese Academy of Sciences, Beijing 100049, china 4. Information Center of land and resources Department of sichuan Province, Chengdu 610041, sichuan, china The Faculty of Geography resources Science Sichuan Normal University 610066 Chengdu Sichuan China Institute of Mountain Hazards Environment Chinese Academy of Sciences 610041 Chengdu Sichuan China Graduate university of the Chinese Academy of Sciences 100049 Beijing China Information Center of land resources Department of sichuan Province 610041 Chengdu Sichuan China

By means of combining auto-extraction with manual interpretation, the current distribution information about cultivated land is obtained. The distribution information of 1992 is extracted from the dynamic polygons of 2002. The monitoring mini-system of the cultivated slope land is established. In the system, detailed surveys, focused on the resources of cultivated slope land, are carried out. The results indicate that the area of the cultivated slope land is very large. Meanwhile, there are lots of cultivated steep slopes with gradient above 35°. The areas of steep land cultivated had been slowly reduced from 1992 to 2002. At the same time, the pressures of returning farm land to forestry are great in all counties. The conflicts between population growth, insufficient grain supply and stagnant economic development sharpen increasingly. It is inevitable to improve the agricultural structure.

关键词： slope land cultivated remote sensing geography information system (GIS) the pressure of returning farm land to forestry Three Gorges Reservoir Area

英美刑事证据法的发展理路及现代检视——对达马斯卡《漂移的证据法》的批判性解读

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法制与社会发展 2008年第1期14卷 151-160页

作者：唐芳西华师范大学法学院四川南充637002

证据法的发展走向是西方尤其是英美法学界近年来讨论的焦点和热点。《漂移的证据法》因运用比较方法对英美证据法的三大制度性支柱及其转变的现实进行精湛的分析而赢得了广泛赞誉,但对英美证据发展走向的悲观主义结论又使得这种赞誉大... 详细信息

证据法的发展走向是西方尤其是英美法学界近年来讨论的焦点和热点。《漂移的证据法》因运用比较方法对英美证据法的三大制度性支柱及其转变的现实进行精湛的分析而赢得了广泛赞誉,但对英美证据发展走向的悲观主义结论又使得这种赞誉大打折扣。从历史维度和现实逻辑来看,英美刑事证据法不会像达马斯卡所说的那样"崩溃"和"不可预测"。

关键词：英美刑事证据法达马斯卡理论根基制度构架发展走向

Quality evaluation for air plasma spray thermal barrier coatings with pulsed thermography

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Progress in Natural Science:Materials International 2011年第4期21卷 301-306页

作者： Shi-bin ZHAO~1,Cun-lin ZHANG~2,Nai-ming WU~3,Hua-ming WANG~1 1.school of Materials Science and Engineering,Beihang university,Beijing 100191,china 2.Department of Physics,Capital normal university,Beijing 100048,china 3.school of Jet Propulsion,Beihang university,Beijing 100191,china [a] school of Materials Science and Engineering Beihang University Beijing 100191 China [b] Department of Physics Capital Normal University Beijing 100048 China [c] school of Jet Propulsion Beihang University Beijing 100191 China

Pulsed thermography(PT) as a non-contact non-destructive evaluation(NDE) technique was employed to examine as-sprayed air plasma spray(APS) thermal barrier coatings(TBCs) for quality *** and micro-structural characteristics play a vital role in determining the *** this paper,PT logarithmic peak second-derivative method was adopted to measure the thickness of top *** dependent thermal images were used to characterize the microstructure which was confirmed by scanning electron microscope(SEM).The results showed that there was relationship between the temperature distribution of the surface and microstructure change in *** distribution in thermal images and measurement results of thickness were in fairly good agreement with the microstructure *** can be concluded that it was possible to employ these NDE methods as quality evaluation for as-sprayed TBCs.

关键词： thermal barrier coatings(TBCs) non-destructive evaluation(NDE) pulsed thermography microstructure thickness measurement