Suchergebnisse
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Vor 2 Tagen · Windswept desert pavement of small, smooth, closely packed stones in the Mojave desert. A large part of the surface area of the world's deserts consists of flat, stone-covered plains dominated by wind erosion. In "eolian deflation", the wind continually removes fine-grained material, which becomes wind-blown sand.
Vor 2 Tagen · Sahel, semiarid region of western and north-central Africa extending from Senegal eastward to Sudan. It forms a transitional zone between the arid Sahara (desert) to the north and the belt of humid savannas to the south. Learn more about the Sahel here.
- The Editors of Encyclopaedia Britannica
Vor 5 Tagen · Desert pavements are unique landforms with distinct characteristics. They are composed of closely packed, interlocking angular or rounded rock fragments, usually of pebble and cobble size. These fragments create a surface that is solid and resistant to erosion.
Vor 5 Tagen · The durability of the curing agent-coated base met the requirements of pavement performance in desert areas. The results of XRD, TG, and SEM indicated that the curing agent promoted hydration. In addition, the number of C-S-H gel and AFt crystals significantly increased. The curing difficulty of road bases in desert areas could be reduced effectively through the application presented in this ...
Vor einem Tag · Twenty died at bus stops, others were in tents, and an unrecorded number of people were found on the pavement, prone as if on a baking stone. More than 250 other people — the elderly, ill and ...
Vor 3 Tagen · Pavement @ Parque do Ibirapuera, São Paulo, Brazil, May 19, 2024
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- Cristiano Souza
Vor einem Tag · The measures can be very expensive. The most important will likely be paving dirt roads, which make up 67% of all PM-10 emissions according to the most recent inventory from 2017. Other steps include watering, an expensive measure in the desert, and treating both construction sites and miles of roads with dust suppressants.
