منابع مشابه
Blast Mitigation Analysis of Semi-Buried Structure
Semi-buried structures are most commonly used at first line of defense along the border between two countries. This demands investigation of their dynamic behaviour under blast loading. Herein, a semi-buried structure with foam sandwiched walls and buttresses to reduce the effect of blast is analysed. The effect of provision of different configurations of buttresses and foam core between two la...
متن کاملthe structure of lie derivations on c*-algebras
نشان می دهیم که هر اشتقاق لی روی یک c^*-جبر به شکل استاندارد است، یعنی می تواند به طور یکتا به مجموع یک اشتقاق لی و یک اثر مرکز مقدار تجزیه شود. کلمات کلیدی: اشتقاق، اشتقاق لی، c^*-جبر.
15 صفحه اولSouthern Circumpolar Crater Ice Deposits on Mars
Introduction: Layered deposits at the poles of Mars are thought to preserve a record of past climatic conditions in up to 3 km of water ice and dust. Just beyond the extent of the south polar layered deposits (SPLD), dozens of impact craters in the heavilycratered southern highlands contain mounds of fill material. Many of these crater-filling deposits (CFDs) appear to be outliers of the main S...
متن کاملSubsurface ice on Mars with rough topography
[1] High-latitude ground ice on Mars discovered by the Gamma Ray Spectrometer suite is thought to be thermally stable owing to the presence of vapor in the Martian atmosphere. However, local slopes can alter surface and subsurface temperatures substantially, and hence allow ground ice to persist at locations where it would otherwise be unstable. Global statistics of the topography of Mars are c...
متن کاملDo ice caves exist on Mars?
We have developed a numerical model for assessing the lifetime of ice deposits in martian caves that are open to the atmosphere. Our model results and sensitivity tests indicate that cave ice would be stable over significant portions of the surface of Mars. Ice caves on Earth commonly occur in lava tubes, and Mars has been significantly resurfaced by volcanic activity during its history, includ...
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ژورنال
عنوان ژورنال: Journal of Aircraft and Spacecraft Technology
سال: 2018
ISSN: 2523-1200
DOI: 10.3844/jastsp.2018.72.79