exchange

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Related to anion exchange: cation exchange, Anion exchange membrane, anion exchange resin

Exchange

Stock Exchange

A place, whether physical or electronic, where stocks, bonds, and/or derivatives in listed companies are bought and sold. A stock exchange may be a private company, a non-profit, or a publicly-traded company (some exchanges have shares that trade on their own floors). A stock exchange provides a regulated place where brokers and companies may meet in order to make investments on neutral ground. The concept traces its roots back to medieval France and the Low Countries, where agricultural goods were traded for cash or debt. Most countries have a main exchange and many also have smaller, regional exchanges. A stock exchange is also called a bourse or simply an exchange.

exchange


exchange

See swap.

Exchange.

Traditionally, an exchange has been a physical location for trading securities. Trading is handled, at least in part, by an open outcry or dual auction system.

Two examples in the United States are the New York Stock Exchange (NYSE), which has the largest trading floor in the world, and the Chicago Board Options Exchange (CBOE).

However, the definition is evolving. Traditional exchanges handle an increasing number of trades electronically, off the floor. Nasdaq and other totally electronic securities markets, without trading floors, have exchange status.

As a result, the terms exchange and market are being used interchangeably to mean any environment in which listed products are traded.

The term exchange also refers to the act of moving assets from one fund to another in the same fund family or from one variable annuity subaccount to another offered through the same contract.

exchange

see MARKET, BARTER.

exchange

  1. 1the transfer of the right to own or use goods and services. Exchange is necessary in specialized economies (see SPECIALIZATION). In simpler specialized economies, exchange can take the form of BARTER. In more complex specialized economies exchange is undertaken through MARKETS, where the right to own or use goods and services is bought and sold. See TRANSACTION.
  2. the means of financing the purchase of goods and services in a market. See MONEY, FOREIGN EXCHANGE.

exchange

Parties may exchange like-kind properties and not pay any income taxes at the time of the exchange but, instead, defer them until the later sale of the exchanged property. See 1031 exchange.

Exchange

A transfer of property for other property or services. Some exchanges produce currently taxable income while others can be structured so as to defer any tax liability.
References in periodicals archive ?
with the incorporation of a decolorization step using the strong base anion exchange resin selected in the last section.
The concentrations of exudates measured from root tips and mature regions indicate that poor absorption of organic anions onto anion exchange membranes was not a constraint to collection, as the elution efficiency of these membranes (as measured by malate) is greatest at low anion concentrations.
This consideration leads to the hypothesis that patients with AD had normal anion exchange kinetics ([Lambda] [is less than] 0) before the onset of disease, which in turn requires that measurements of young adults differ from those of patients.
It is interesting to prepare a new type of organic-inorganic anion exchange composite fibers (AECFs) based on PAN and silica gel by an ecofriendly route.
Tony Milici, CEO of GeneThera remarked, "GeneThera's PURIVAX(TM) is able to achieve both high purity and high viral titer (up to 10e16 viral particles/eulate) based on its proprietary multi-resin anion exchange chromatography system, unlike traditional technologies and first generation chromatography processes that are inadequate, both in terms of purity and yield.
In this study, we used the cation exchange film contained the sulfonic acid groups and the anion exchange film contained the quaternary ammonium groups.
Vaccine research evaluates the potential of dendritic cells, T27K fractionated by gel filtration and anion exchange, and a recombinant Ag2/PRA106 + CSA chimeric fusion protein.
The Mauzerall-Granick method and its variants (3-7) incorporate anion exchange purification and can be time-consuming and inconvenient.
Ion exchange chromatogray: Q Sepharose (Pharmacia, Sweden) was used for anion exchange in column (bed dimension 2.
Using theory developed by Uehara and Gillman (1980), a methodology has been developed that distinguishes that portion of the cation exchange capacity (CEC) that retains the basic cations, and predicts changes in CEC and anion exchange capacity (AEC) as soil solution pH and ionic strength are varied.
This membrane uses Quaternary Ammonium (Q) chemistries to capture molecules by anion exchange, and features a large mass transfer surface, which is ideal for binding of biopolymers.
Strongly acidic cation-exchange resin, strongly basic anion exchange resin, and mixed bed columns of weakly acidic cation exchange resin and weakly basic anion exchange resin were used with a stevidoside (purity 80-87%) showing recovery of about 79% [10].