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Capacitive deionization (CDI) is a technology to deionize water by applying an electrical potential difference over two electrodes, which are often made of porous carbon. [2] In other words, CDI is an electro-sorption method using a combination of a sorption media and an electrical field to separate ions and charged particles. [ 3 ]
1,1'-Carbonyldiimidazole (CDI) is an organic compound with the molecular formula (C 3 H 3 N 2) 2 CO. It is a white crystalline solid . It is often used for the coupling of amino acids for peptide synthesis and as a reagent in organic synthesis .
The more calcium and magnesium ions that are dissolved in water, the harder it is said to be; water with few dissolved calcium and magnesium ions is described as being soft. [ 2 ] The U.S. Food and Drug Administration classifies mineral water as water containing at least 250 parts per million total dissolved solids (TDS), originating from a ...
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A Brazilian Swap is a type of swap where the floating rate is calculated using an average rate and has only one payment, which occurs at maturity. [1]The average rate used for the Floating Leg is the Average One-Day Interbank Deposit (aka CDI rate, or overnight DI rate) which is an annual rate and is calculated daily by the Central of Custody and Financial Settlement of Securities (CETIP).
An estimated 10 percent of urban water supply is provided by private or mixed public-private companies, usually under concessions, leases or management contracts. Under these water service contract arrangements the public entity that is legally responsible for service provision delegates certain or all aspects of service provision to the ...
For example, the theme of the UN World Water Day in 2007 was Coping with Water Scarcity; [8] The USA's Worldwatch Institute featured a chapter on water management in its assessment State of the World 2008; [9] and reports published in 2009 by the World Economic Forum and UNESCO concluded that water scarcity is now a bigger threat than the ...