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The properties vary because HTPB is a mixture rather than a pure compound, and it is manufactured to meet customers' specific requirements. A typical HTPB is R-45HTLO. [ 1 ] This product consists of oligomeric units typically containing 40–50 butadiene molecules bonded together, with each end of the chain terminated with a hydroxyl [OH] group:
The 1562 map of the Americas, created by Spanish cartographer Diego Gutiérrez, which applied the name California for the first time.. California was the name given to a mythical island populated only by beautiful Amazon warriors, as depicted in Greek myths, using gold tools and weapons in the popular early 16th-century romance novel Las Sergas de Esplandián (The Adventures of Esplandián) by ...
The death toll from the earthquake and resulting fire is the greatest loss of life from a natural disaster in California's history. The most widely accepted estimate for the magnitude of the earthquake is a moment magnitude (M w) or Richter magnitude (M L) of 7.8; [7] however, other values have been proposed, from 7.7 to as high as 8.25. [8]
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Before 1768: An enlargeable territorial map of California tribal groups and languages prior to European contact within the modern day borders. Before 1768: An enlargeable map of the world showing the dividing lines for; Pope Alexander VI's Inter caetera papal bull (1493), the Treaty of Tordesillas (1494), and the Treaty of Saragossa (1529).
California’s eco-bureaucrats halted a wildfire prevention project near the Pacific Palisades to protect an endangered shrub. It’s just the latest clash between fire safety and conservation in ...
Present-day Baja California of Mexico was misrepresented in early maps as an island.This example c. 1650. Restored. The first European explorers, flying the flags of Spain and of England, sailed along the coast of California from the early 16th century to the mid-18th century, but no European settlements were established.
An additional $250 million came through Proposition 1, a bond measure passed by California voters in 2014 that included money for removing barriers blocking fish on rivers. A tunnel, left, at Iron ...