Volume fraction

In chemistry, the volume fraction φ_i is defined as the volume of a constituent V_i divided by the volume of all constituents of the mixture V prior to mixing:

Being dimensionless, its unit is 1; it is expressed as a number, e.g., 0.18. It is the same concept as volume percent (vol%) except that the latter is expressed with a denominator of 100, e.g., 18%.

The volume fraction coincides with the volume concentration in ideal solutions where the volumes of the constituents are additive (the volume of the solution is equal to the sum of the volumes of its ingredients).

The sum of all volume fractions of a mixture is equal to 1:

The volume fraction (percentage by volume, vol%) is one way of expressing the composition of a mixture with a dimensionless quantity; mass fraction (percentage by weight, wt%) and mole fraction (percentage by moles, mol%) are others.

Volume percent

Volume percent is a common expression of a solution's concentration. It is the volume fraction expressed with a denominator of 100, and thus is defined as:

Vol. 4 (Black Sabbath album)

Vol. 4 is the fourth studio album by English heavy metal band Black Sabbath, released in September 1972. It was the first album by Black Sabbath not produced by Rodger Bain; guitarist Tony Iommi assumed production duties. Patrick Meehan, the band's then-manager, was listed as co-producer, though his actual involvement in the album's production was minimal at best.

Recording

In June 1972, Black Sabbath reconvened in Los Angeles to begin work on their fourth album at the Record Plant Studios. The recording process was plagued with problems, many due to substance abuse issues. In the studio, the band regularly had large speaker boxes full of cocaine delivered. While struggling to record the song "Cornucopia" after "sitting in the middle of the room, just doing drugs",Bill Ward feared that he was about to be fired from the band. "I hated the song, there were some patterns that were just horrible", Ward said. "I nailed it in the end, but the reaction I got was the cold shoulder from everybody. It was like 'Well, just go home, you're not being of any use right now.' I felt like I'd blown it, I was about to get fired". According to the book How Black Was Our Sabbath, Bill Ward "was always a drinker, but rarely appeared drunk. Retrospectively, that might have been a danger sign. Now, his self-control was clearly slipping." Iommi claims in his autobiography that Ward almost died after a prank-gone-wrong during recording of the album. The Bel Air mansion the band was renting belonged to John DuPont of the DuPont chemical company and the band found several spray cans of gold DuPont paint in a room of the house; finding Ward naked and unconscious after drinking heavily, they proceeded to cover the drummer in gold paint from head to toe.

Volume 4

Volume Four, Volume 4, or Volume IV may refer to:

Music

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DVD

DVD ( "digital versatile disc" or "digital video disc") is a digital optical disc storage format invented and developed by Philips, Sony, Toshiba, and Panasonic in 1995. The medium can store any kind of digital data and is widely used for software and other computer files as well as video programs watched using DVD players. DVDs offer higher storage capacity than compact discs while having the same dimensions.

Pre-recorded DVDs are mass-produced using molding machines that physically stamp data onto the DVD. Such discs are a form of DVD-ROMs, because data can only be read and not written or erased. Blank recordable DVD discs (DVD-R and DVD+R) can be recorded once using a DVD recorder and then function as a DVD-ROM. Rewritable DVDs (DVD-RW, DVD+RW, and DVD-RAM) can be recorded and erased many times.

DVDs are used in DVD-Video consumer digital video format and in DVD-Audio consumer digital audio format as well as for authoring DVD discs written in a special AVCHD format to hold high definition material (often in conjunction with AVCHD format camcorders). DVDs containing other types of information may be referred to as DVD data discs.

Karl Maximovich

Carl Johann Maximovich (also Karl Ivanovich Maximovich, Russian: Карл Иванович Максимович; 1827 in Tula, Russia – 1891 in Saint Petersburg) was a Russian botanist. Maximovich spent most of his life studying the flora of the countries he had visited in the Far East, and naming many new species. He worked at the Saint Petersburg Botanical Gardens from 1852 as curator of the herbarium collection, becoming Director in 1869.

History

Born a Baltic-German, his name at birth was Karl Ivanovich Maksimovich, but he changed it to the German version of his name for his scientific work. He graduated from the institution which is now University of Tartu, Estonia in (1850), he was a pupil of Alexander G. von Bunge.

From 1853-1857 he traveled around the world. He travelled with another Baltic-German Leopold von Schrenck to the Amur region in eastern Asia. From 1859 to 1864 he also he visited China, Korea and Japan. He arrived in Japan in late 1860, initially basing his operations in Hakodate. He traveled extensively in southern Japan and for much of 1862 including the region of Yokohama and Mount Fuji, he ended that year in Nagasaki. He also explored much of Kyūshū.

Maxim of Bulgaria

Patriarch Maxim (Maximus) (Bulgarian: Патриарх Максим) (Marin Naydenov Minkov, October 29, 1914– November 6, 2012) was the head of the Bulgarian Orthodox Church from 1971 until his death.

He was born in Oreshak, the second of the two children of Nayden Minkov Rachev, but very little is known about his parents' background. He was educated only in his native mountain village of Oreshak but from his late childhood he became a novice monk in the Troyan Monastery and then studied Orthodox Theology at Sofia University. He took Holy Orders in 1941 and became secretary general of the Holy Synod in 1955 and titular bishop of Branit on December 30, 1956.

In 1960 he was elected Metropolitan of Lovech on October 30, 1960, and during this time, despite the atmosphere of persecution under Todor Zhivkov, Maxim was able to win enough favour with the Politburo to be a certainty for election as Patriarch on July 4, 1971, after Patriarch Kyril died.

In the early 1990s, a split in the Bulgarian Church was stimulated by the government of the Union of Democratic Forces, based on the alleged cooperation and affiliation of Maxim with the former regime. However, Maxim was able to take control of the majority of the parishes and to prevent any schismatic threats within the Church. The faction against Maxim formed the Bulgarian Orthodox Church – Alternative synod.

Jet

Jet, Jets, or The Jets may refer to:

Aerospace

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