Fuel factor

The Fuel Factor, f_o, is the ratio of created CO₂ to depleted oxygen in a combustion reaction, used to check the accuracy of an emission measurement system. It can be calculated using the equation

Where %O₂ is the percent O₂ by volume, dry basis, %CO₂ is the percent CO₂ by volume, dry basis, and 20.9 is the percent O₂ by volume in ambient air. The Fuel factor can be corrected for the amount of CO, by adding the percent CO on a dry basis to the CO₂, and subtracting half of the percent CO from the O₂.

References

Fuel

A fuel is any material that can be made to react so that it releases chemical or nuclear energy as heat or to be used for work. The concept was originally applied solely to those materials capable of releasing chemical energy but has since also been applied to other sources of heat energy such as nuclear energy (via nuclear fission or nuclear fusion).

The heat energy released by reactions of fuels is converted into mechanical energy via a heat engine. Other times the heat itself is valued for warmth, cooking, or industrial processes, as well as the illumination that comes with combustion. Fuels are also used in the cells of organisms in a process known as cellular respiration, where organic molecules are oxidized to release usable energy. Hydrocarbons and related oxygen-containing molecules are by far the most common source of fuel used by humans, but other substances, including radioactive metals, are also utilized.

Fuels are contrasted with other substances or devices storing potential energy, such as those that directly release electrical energy (such as batteries and capacitors) or mechanical energy (such as flywheels, springs, compressed air, or water in a reservoir).

Fuel (hardcore band)

Fuel was a short-lived Bay Area post-hardcore musical act that created both personal and political songs, something that was unique during the "first wave" of emo in the 1990s. Fuel had a sound akin to early-Hot Water Music and especially Fugazi with twin guitars and dueling rough post-hardcore vocals. In fact, it is noted that Fuel was often jokingly referred to as "Fuelgazi." Fuel's style has been compared to the D.C. sound of many Dischord bands.

Fuel featured Mike Kirsch (of early Pinhead Gunpowder and a number of other notable punk rock bands) on guitar/vocals, Jim Allison on guitar/vocals, Aaron Arroyo on bass, and Jeff Stofan (also of Monsula and the White Trash Debutantes at one time) on drums.

In 2008, Alternative Press named Fuel as a group of significant interest in its profile of "23 Bands who Shaped Punk." Jason Black of Hot Water Music and The Draft contributed a testimony for the article citing musical influence.

Discography

Fuel released one LP “Monuments to Excess” in 1990, first on Cargo Records then repressed by Ebullition Records. Monuments to Excess was produced by Kevin Army. Army audio engineered the albums of many influential punk bands, including Operation Ivy, Green Day, The Mr. T Experience, etc. In addition, Fuel put out an EP "Take Effect" on Lookout Records, also in 1990.

Fuel (EP)

Fuel is Fuel's self-titled EP.

Track listing

All songs by Carl Bell except where noted.

Personnel

Factor

Factor, a Latin word meaning "who/which acts", may refer to:

Commerce

Science and technology

Biology

Computer science and information technology

Factoring (finance)

Factoring is a financial transaction and a type of debtor finance in which a business sells its accounts receivable (i.e., invoices) to a third party (called a factor) at a discount. A business will sometimes factor its receivable assets to meet its present and immediate cash needs.Forfaiting is a factoring arrangement used in international trade finance by exporters who wish to sell their receivables to a forfaiter. Factoring is commonly referred to as accounts receivable factoring, invoice factoring, and sometimes accounts receivable financing. Accounts receivable financing is a term more accurately used to describe a form of asset based lending against accounts receivable.

Factoring is not the same as invoice discounting (which is called an "Assignment of Accounts Receivable" in American accounting – as propagated by FASB within GAAP). Factoring is the sale of receivables, whereas invoice discounting ("assignment of accounts receivable" in American accounting) is a borrowing that involves the use of the accounts receivable assets as collateral for the loan. However, in some other markets, such as the UK, invoice discounting is considered to be a form of factoring, involving the "assignment of receivables", that is included in official factoring statistics. It is therefore also not considered to be borrowing in the UK. In the UK the arrangement is usually confidential in that the debtor is not notified of the assignment of the receivable and the seller of the receivable collects the debt on behalf of the factor. In the UK, the main difference between factoring and invoice discounting is confidentiality.

Von Neumann algebra

In mathematics, a von Neumann algebra or W*-algebra is a *-algebra of bounded operators on a Hilbert space that is closed in the weak operator topology and contains the identity operator. They were originally introduced by John von Neumann, motivated by his study of single operators, group representations, ergodic theory and quantum mechanics. His double commutant theorem shows that the analytic definition is equivalent to a purely algebraic definition as an algebra of symmetries.

Two basic examples of von Neumann algebras are as follows. The ring L^∞(R) of essentially bounded measurable functions on the real line is a commutative von Neumann algebra, which acts by pointwise multiplication on the Hilbert space L²(R) of square integrable functions. The algebra B(H) of all bounded operators on a Hilbert space H is a von Neumann algebra, non-commutative if the Hilbert space has dimension at least 2.

Von Neumann algebras were first studied by von Neumann (1930) in 1929; he and Francis Murray developed the basic theory, under the original name of rings of operators, in a series of papers written in the 1930s and 1940s (F.J. Murray & J. von Neumann 1936, 1937, 1943; J. von Neumann 1938, 1940, 1943, 1949), reprinted in the collected works of von Neumann (1961).