نتایج جستجو برای: tibet
تعداد نتایج: 4205 فیلتر نتایج به سال:
OBSERVATION OF TeV GAMMA RAYS FROM THE FERMI BRIGHT GALACTIC SOURCES WITH THE TIBET AIR SHOWER ARRAY
Using the Tibet-III air shower array, we search for TeV γ-rays from 27 potential Galactic sources in the early list of bright sources obtained by the Fermi Large Area Telescope at energies above 100 MeV. Among them, we observe 7 sources instead of the expected 0.61 sources at a significance of 2σ or more excess. The chance probability from Poisson statistics would be estimated to be 3.8×10. If ...
The fate of the colliding Indian and Asian tectonic plates below the Tibetan high plateau may be visualized by, in addition to seismic tomography, mapping the deep seismic discontinuities, like the crust-mantle boundary (Moho), the lithosphere-asthenosphere boundary (LAB), or the discontinuities at 410 and 660 km depth. We herein present observations of seismic discontinuities with the P and S ...
A number of tectonic models have been proposed for the Tibetan Plateau, which origin, however, remains poorly understood. In this study, investigations of the shear wave velocity (Vs) and density (ρ) structures of the crust and upper mantle evidenced three remarkable features: (1) There are variations in Vs and ρ of the metasomatic mantle wedge in the hanging wall of the subduction beneath diff...
We consider the Sherrington-Kirkpatrick mean eld model for spin glasses and show how the cavity method can be exploited for constructing functional representations of the ther-modynamic variables, in terms of functional order parameters. One representation is based on a functional order parameter of Parisi type. By assuming that the functional order parameter does not depend on the strength of ...
The gastroesophageal reflux presence in asthma has been the subject of many studies indicating their frequent coexisting. The essence of this correlation is not entirely clear and several hypotheses can be found in literature. Recently defined laryngopharyngeal reflux and studies on its impact on the course of asthma seem to bring us closer to understanding this issue. In the last years we gain...
High-precision calculations of a series of standard models of the internal structure of the Sun using diierent opacity tables are presented. The models are compared on the basis of two key parameters-helium abundance and speciic entropy in the convection zone. The eeect of opacity on these two parameters in the radiative interior of the Sun is studied. Comparison of standard models calculated u...
In dieser Arbeit wird ein Verfahren zur vollautomatischen Verifikation von Sicherheitseigenschaften von Scade-Modellen entwickelt. Dazu transformieren wir jedes dieser Modelle in eine SMT-Instanz (Satisfiability Modulo Theories) und übergeben dies an einen Solver. SMT wurde gewählt, da es Logiken umfasst die ausdrucksstärker als Aussagenlogik sind, während deren Solver sehr gute Geschwindigkeit...
The Qinghai-Tibet (QT) Plateau Engineering Corridor is located in the hinterland of the QT Plateau, which is highly sensitive to global climate change. Climate change causes permafrost degradation, which subsequently affects vegetation growth. This study focused on the vegetation dynamics and their relationships with climate change and human activities in the region surrounding the QT Plateau E...
SAR differential interferometry is an innovative space-based measurement technology for ground deformation. Under inclement Qinghai-Tibet plateau environment, monitoring and analysis of railway subgrade deformation using satellite interferometry in plateau permafrost region has very important engineering significance for stability evaluation and safety management. In the paper, a brief descript...
The Tibetan Plateau results from the collision of the Indian and Eurasian Plates during the Cenozoic, which produced at least 2,000 km of convergence. Its tectonics is dominated by an eastward extrusion of crustal material that has been explained by models implying either a mechanical decoupling between the crust and the lithosphere, or lithospheric deformation. Discriminating between these end...
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