Most modern scuba sets have a secondary second-stage demand valve on a separate hose, a configuration variously called a " secondary ", or " octopus " demand valve, " alternate air source ", " safe secondary " or " safe-second ".

The stereogenic centers in syndiotactic polymers alternate their relative configuration.

An alternate network configuration to Virtual circuit is Datagram.

Relatively recently, cyclobutadiene was discovered to adopt an asymmetric, rectangular configuration in which single and double bonds indeed alternate ; there is no resonance and the single bonds are markedly longer than the double bonds, reducing unfavorable p-orbital overlap.

However, it is not possible given the current design configuration for one site to act as a lower power alternate frequency backup for the other.

The toy is essentially a permanent magnetic top and base plate, ring or alternate geometric configuration.

; Attack Mode II: Similar to the original KITT's alternate configuration to allow faster traveling speeds.

The game uses a six-button control configuration similar to Street Fighter II and its iterations, as well as an alternate version of the first Street Fighter, with three punch buttons and three kick buttons, each for different strength levels ( light, medium, and heavy ).

Variations in the character of the solution or in the conditions of deposition may cause a corresponding variation in the successive layers, so that bands of chalcedony often alternate with layers of crystalline quartz.

If the individual is seeking death an alternate method is often suicide by cop.

The demand for unissued Holly material was so great that Norman Petty resorted to overdubbing whatever he could find: alternate takes of studio recordings, originally rejected masters, " Crying, Waiting, Hoping " and the other five 1959 tracks ( adding new surf-guitar arrangements ), and even Holly's amateur demos from 1954 ( where the low-fidelity vocals are often muffled behind the new orchestrations ).

Between the 1959 – 60 Jack Hansen overdubs, the 1960s Norman Petty overdubs, various alternate takes, and Holly's undubbed originals, collectors can often choose from multiple versions of the same song.

The burial chamber is normally located at one end of a rectangular or trapezoidal cairn, while a roofless, semi-circular forecourt at the entrance provided access from the outside ( although the entrance itself was often blocked ), and gives this type of chambered cairn its alternate name of court tomb or court cairn.

Many versions of Doom ( and its sequels ) include secret levels which are accessed by the player discovering alternate exits, often hidden behind secret doors or in areas which are difficult to reach.

Most of its releases begin with these stories then add background material to explain the settings ( often as alternate worlds whose history diverges from our own ), adventures, and other game material.

Due to limitations of this system found during the 1960s and 1970s — victims often simply did not report crimes to the police in the first place — the Department of Justice developed an alternate method of tallying crime, the victimization survey.

She is often depicted as a trio of goddesses, all sisters, although membership of the triad varies ; the most common combinations are Badb, Macha and Nemain, or Badb, Macha and Anand ; Anand is also given as an alternate name for Morrigu.

But mania is most often associated with bipolar disorder, where episodes of mania may alternate with episodes of major depression.

" Like their madrigal cousins, Renaissance motets developed in episodic format, with separate phrases of the source text being given independent melodic treatment and contrapuntal development ; contrapuntal passages often alternate with monody.

Anderson set much of his work in the past, often with the addition of magic, or in alternate or future worlds that resemble past eras.

This is often interpreted as merely an alternate name for Remus: Rom II, or Romulus II.

The name of the residence is often used as a metonym or alternate title for ' the government ' when the office is politically the highest, e. g. in the UK " Downing Street announced today ..."

Since there is always the possibility of jurors not completing the trial for health or other reasons, often one or more alternate jurors are nominated.

In New York, areas around the river are often named with the alternate spelling Allegany in reference to the river ; for example, the Village of Allegany and Allegany State Park.

The leaves are simple, alternate, usually lanceolate, unlobed, and often with nectaries on the leaf stalk.

Compared to other techniques often used in its basic forms by shredders, such as alternate picking, few strokes are required in sweep picking.

Yoshis of various colours appear often in multiplayer games as alternate choices, which may or may not have tweaked stats.

The name Adad and various alternate forms and bynames ( Dadu, Bir, Dadda ) are often found in the names of the Assyrian kings.

Electronica composers often create alternate versions of their compositions, known as " remixes "; this practice also occurs in related musical forms such as ambient, jungle, and electronic dance music.

Euphoniums often have a fourth valve as an alternate fingering for 1 & 3 split fingering with improved intonation.

Particularly, any piece of music performed by two semi-independent choirs in interaction, often singing alternate musical phrases, is known as ' antiphonal '.

As you can see, in this Push-Pull Super Set the entire chest-back-shoulder area is vigorously exercised in alternate sectors by alternate exercises so the complete torso remains pumped-up all the time!!

The term Building design professional ( or Design professional ), by contrast, is a much broader term including professionals who practice independently under an alternate profession, such as engineering professionals, or those who assist in the practice architecture under the supervision of a licensed architect, such as architectural technologists and intern architects.

Cross-time, time-splitting and alternate history themes have become so closely interwoven that it is impossible to discuss them fully apart from one another.

According to Steven H Silver, alternate history requires three things: 1 ) the story must have a point of divergence from the history of our world prior to the time at which the author is writing, 2 ) a change that would alter history as it is known, and 3 ) an examination of the ramifications of that change.

Science fiction set in what was the future but is now the past, like Arthur C. Clarke's 2001: A Space Odyssey or Nineteen Eighty-Four, are not alternate history because the author has not made the conscious choice to change the past.

Secret history, works that document things that are not known to have happened historically but would not have changed history had they happened, is also not to be confused with alternate history.

* Changing The Times, is an Alternate History Electronic Magazine written and maintained by alternate historians.

Vowels and their corresponding semivowels alternate in many languages depending on the phonological environment, or for grammatical reasons, as is the case with Indo-European ablaut.

Because the WD1770 is capable of single density mode and uses the same IBM360 derived floppy disc format as the Intel 8271 found in the BBC Micro, it was also possible to run a DFS filing system with an alternate ROM, such as the P. R. E. S AP4 interface.

The series is set on an alternate 18th-century Earth.

The standard tuning for an acoustic guitar is E-A-D-G-B-E ( low to high ), although many players, particularly fingerpickers, use alternate tunings ( scordatura ), such as " open G " ( D-G-D-G-B-D ), " open D " ( D-A-D-F-A-D ), or " drop D " ( D-A-D-G-B-E ).

An alternate viewpoint is that limiting praise to the unaccompanied chant of the early church is not commanded in scripture, and that the churches in any age are free to offer their songs with or without musical instruments.

Raimi recalls, " Actually, I kind of like the fact that there are two endings, that in one alternate universe Bruce is screwed, and in another universe he's some cheesy hero ".

Last Bronx, a 1996 Sega game played on the bad reputation of the Bronx to lend its name to an alternate version of post-Japanese bubble Tokyo, where crime and gang warfare is rampant.

A connection between Bragi and the bragarfull ' promise cup ' is sometimes suggested, as bragafull, an alternate form of the word, might be translated as ' Bragi's cup '.

A common alternate ruleset is to require all available boxes be claimed on your turn.

An alternate uniform is black with the word " Orioles " written across the chest.

The Orioles wear their black alternate jerseys for Friday night games with the alternate " O's " cap, whether at home or on the road ; the cartoon bird batting helmet is still used with this uniform ( see description on home and road design below ).

Additionally, in the alternate history novel Ruled Britannia by Harry Turtledove, Boudicca is the subject of a play written by William Shakespeare to incite the people of Britain to revolt against Spanish conquerors.