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Secondary efflorescence on the dam of the Robert Moses Niagara Power Plant. In chemistry, efflorescence (which roughly means "the flowering" in French) is the migration of a salt to the surface of a porous material, where it forms a coating. The essential process involves the dissolving of an internally held salt in water or occasionally, in ...
This damage is an average of 2,000 hectares of irrigated land in arid and semi-arid areas daily for more than 20 years across 75 countries (each week the world loses an area larger than Manhattan)...To feed the world's anticipated nine billion people by 2050, and with little new productive land available, it's a case of all lands needed on deck.—principal author Manzoor Qadir, Assistant ...
A filibuster is a tactic used in the United States Senate to delay or block a vote on a measure by preventing debate on it from ending. [1]: 2 The Senate's rules place few restrictions on debate; in general, if no other senator is speaking, a senator who seeks recognition is entitled to speak for as long as they wish.
Example of secondary efflorescence in parking garage exposed to diluted road salt from vehicles entering the garage during winter. When water flows through cracks present in concrete, water may dissolve various minerals present in the hardened cement paste or in the aggregates, if the solution is unsaturated with respect to them.
Efflorescence is usually the result of mineral solutions in the capillary channels being drawn to the surface. If the water evaporates, the minerals remain as the so-called efflorescence. It also can be the result of chemical reaction; if badly prepared cement-based mortar is applied to maintain the stone in position, free calcium hydroxide may ...
What to Do If You Notice Semaglutide Has Expired. If you notice semaglutide has expired, toss it out. We know it’s tempting to use expired medication (especially when it’s expensive). But even ...
A Louisiana grand jury Friday indicted a New York doctor accused of prescribing the abortion pill online to a teenager in what appears to be the first case of its kind since Roe v.
An affected gastropod shell (a juvenile Agathistoma) from a museum collection. Byne's disease, more accurately known as Bynesian decay, is a peculiar and permanently damaging condition resulting from an ongoing chemical reaction which often attacks mollusk shells and other calcareous specimens that are in storage or on display for long periods of time.
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