Modern regulators typically feature high-pressure ports for pressure sensors of dive-computers and submersible pressure gauges, and additional ports for low-pressure hoses for inflation of dry suits and BC devices.

Modern recreational rigs most often have two regulators connected to a single cylinder, in case the primary regulator fails or another diver runs out of air.

Modern day forms of intensive crop based agriculture involve the use of mechanical ploughing, chemical fertilizers, plant growth regulators or pesticides.

Modern day forms of intensive crop based agriculture involve the use of mechanical ploughing, chemical fertilizers, herbicides, fungicides, insecticides, plant growth regulators and pesticides.

Many other authors have identified specific problems in financial engineering that caused catastrophes: Aaron Brown named confusion between quants and regulators over the meaning of “ capital ”, Felix Salmon fingered the Gaussian copula, Ian Stewart criticized the Black-Scholes formula, Pablo Triana < ref name = Triana >< Pablo Triana, The Number That Killed Us: A Story of Modern Banking, Flawed Mathematics, and a Big Financial Crisis, Wiley ( December 6, 2011 ) 978-0470529737 </ ref > dislikes Value-at-Risk and Scott Patterson

Modern day herbicidal warfare resulted from military research discoveries of plant growth regulators in the Second World War, and is therefore a technological advance on the scorched earth practices by armies throughout history to deprive an enemy of food and cover.

Modern antitrust law could be said to derive in some ways from the original statutes by which the guilds were abolished in Europe.

Modern words that derive from the work include fluorspar ( from which was later named fluorine ) and bismuth.

Modern scholars derive his name from the Luwian compound Priya-muwa -, which means " exceptionally courageous ".

The role of Anglo-Norman as the language of government and law can be seen in the abundance of Modern English words for the mechanisms of government which derive from Anglo-Norman: court, judge, jury, appeal, parliament.

According to the dominant opinion in scholarship, the name may derive from the ancient Germanic word * herut ( Modern English hart, i. e. ' deer ').

It is related to Modern German Weib ( woman, female ), and may derive ultimately from the Indo-European root ghwībh-" shame ; pudenda " ( cf.

Modern classification systems such as APGIII, this order was the first to derive from the core eudicots.

), Mithra became Mehr, Myhr etc., from which Modern Persian Mehr, Pashto لمر Lmar, Waziri ميېر Myer and Armenian Mihr / Mher ultimately derive.

* Modern high power output stages are usually push pull, often necessitating some form of phase splitter to derive a differential / balanced drive signal from a single ended input, typically followed by a further gain stage ( the " driver ") prior to the output tubes.

Modern variants of the running key cipher often replace the traditional tabula recta with bitwise exclusive or, operate on whole bytes rather than alphabetic letters, and derive their running keys from large files.

Modern unisex names may derive from nature ( Lake, Rain, Willow ), colors ( Blue, Grey, Indigo ), countries or states ( Dakota, India, Montana ), surnames ( Jackson, Mackenzie, Murphy ), and politicians ( Kennedy, Madison, Reagan ).

Modern advances in game theory, such as those developed by John Nash, challenge this assumption and derive stable equilibria ( such as the Nash equilibrium ) in complicated bargaining situations.

Modern systems of education in Europe derive their origins from the schools of the High Middle Ages.

Modern editions derive from the Faulkner edition with the inclusion of this 1899 addendum.

Modern historians believe little, if any, of the detail provided by Livy for this battle derive from authentic records.

The name Ximenes itself is thought to derive as both surname and place name from the common Iberian territory of Galicia, since Lusophone linguists believe the Galician language is the forebear of both Modern Portuguese and Modern Spanish.

Modern conservatives, on the other hand, derive support for free markets from practical grounds.

Modern Pueblo oral traditions hold that the Pueblo originated to the north of their current settlements, from sipapu, where they emerged from the underworld.

Alexander I ( c. 1078 – 23 April 1124 ), also called Alaxandair mac Maíl Coluim ( Modern Gaelic: Alasdair mac Mhaol Chaluim ) and nicknamed " The Fierce ", was King of the Scots from 1107 to his death.

Alexander II ( Mediaeval Gaelic: Alaxandair mac Uilliam ; Modern Gaelic: Alasdair mac Uilleim ) ( 24 August 1198 – 6 July 1249 ) was King of Scots from

Alexander III ( Medieval Gaelic: Alaxandair mac Alaxandair ; Modern Gaelic: Alasdair mac Alasdair ) ( 4 September 1241 – 19 March 1286 ) was King of Scots from 1249 to his death.

Modern Anah lies from west to east on the right bank along a bend of the river just before it turns south towards Hit, and presents an attractive appearance.

Modern IFVs are well-armed infantry carriers, differencing from earlier APCs by their heavier armament allowing them to give direct-fire support during an assault.

** Early Modern Britain, Britain from the Tudor period, from 1485 to 1707

* Modern Bulgarian – dates from the 16th century onwards, undergoing general grammar and syntax changes in the 18th and 19th centuries.

The historical development of the Bulgarian language can be described as a transition from a highly synthetic language ( Old Bulgarian ) to a typical analytic language ( Modern Bulgarian ) with Middle Bulgarian as a midpoint in this transition.

Modern boomerangs used for sport are often made from carbon fibre-reinforced plastics, thin aircraft plywood, or other high-tech materials.

Dryden: " The rest in shape a beagle's whelp throughout, With broader forehead and a sharper snout " The Cock and the Fox, and again: " About her feet were little beagles seen " in Palamon and Arcite both from Fables, Ancient and Modern ( 1700 )

Modern historians have proposed wide ranging numbers for the infantry, from 20, 000 – 100, 000 with a consensus of perhaps 25, 000 ; estimates for the cavalry are in the range of 1, 000.

Modern Christian churches tend to be much more concerned with how humanity can be saved from a universal condition of sin and death than the question of how both Jews and Gentiles can be in God's family.

The language became recognizable as Modern Khmer, spoken from the 19th century till today.

Modern microprocessors appear in everything from automobiles to cell phones and children's toys.

Modern structural concrete differs from Roman concrete in two important details.

Modern research has located 20, 000 mass graves from the Khmer Rouge era all over Cambodia.

* Spence, Jonathan D. The Search for Modern China ( 1999 ), 876pp ; well written survey from 1644 to 1990s excerpt and text search ; complete edition online at Questia

* Spence, Jonathan D. The Search for Modern China ( 1991 ), 876pp ; well written survey from 1644 to 1980s excerpt and text search ; complete edition online

Modern societies generally regard crimes as offences against the public or the state, as distinguished from torts ( wrongs against private parties that can give rise to a civil cause of action ).

The glossing was probably brought to England as Old French crimne ( 12th century form of Modern French crime ), from Latin crimen ( in the genitive case: criminis ).

Modern calculations in quantum chemistry usually start from ( but ultimately go far beyond ) a molecular orbital rather than a valence bond approach, not because of any intrinsic superiority in the former but rather because the MO approach is more readily adapted to numerical computations.

Examples of cognates in Indo-European languages are the words night ( English ), nuit ( French ), Nacht ( German ), nacht ( Dutch ), nag ( Afrikaans ), nicht ( Scots ), natt ( Swedish, Norwegian ), nat ( Danish ), nátt ( Faroese ), nótt ( Icelandic ), noc ( Czech, Slovak, Polish ), ночь, noch ( Russian ), ноќ, noć ( Macedonian ), нощ, nosht ( Bulgarian ), ніч, nich ( Ukrainian ), ноч, noch / noč ( Belarusian ), noč ( Slovene ), noć ( Serbo-Croatian ), νύξ, nyx ( Ancient Greek, νύχτα / nyhta in Modern Greek ), nox ( Latin ), nakt-( Sanskrit ), natë ( Albanian ), noche ( Spanish ), nos ( Welsh ), nueche ( Asturian ), noite ( Portuguese and Galician ), notte ( Italian ), nit ( Catalan ), noapte ( Romanian ), nakts ( Latvian ) and naktis ( Lithuanian ), all meaning " night " and derived from the Proto-Indo-European ( PIE ), " night ".