Since that time, Alberta's economic fortunes have largely tracked the price of oil, and increasingly natural gas prices.

Since this gas is in approximate hydrostatic equilibrium with the overall cluster gravitational field, the total mass distribution can be determined.

Since carbon monoxide is a colorless, odorless and tasteless gas, and poses a potentially fatal threat, detectors have become commercially available to warn of dangerous levels in residences.

Since 1999, the Isle of Man has received electricity through the world's longest submarine AC cable, the 90 kV Isle of Man to England Interconnector, as well as from a natural gas power station in Douglas, an oil power station in Peel and a small hydro-electric power station in Sulby Glen.

Since World War II, Iraq's use of mustard gas against Iranian troops and Kurds ( Iran-Iraq war of 1981 – 1988 ) has been the only large-scale use of any chemical weapons.

Since organic compounds often exist as mixtures, a variety of techniques have also been developed to assess purity, especially important being chromatography techniques such as HPLC and gas chromatography.

Since the collapse of the Soviet Union on 31 December 1991, privately owned Russia-based multinational corporations, including producers of petroleum, natural gas, and metal have, in the view of some analysts, become oligarchs.

Automobile exhaust gas capture has also been proposed to be economical but would require extensive design changes or retrofitting .< ref name = Musadi2011 > Since carbonic acid in seawater is in chemical equilibrium with atmospheric carbon dioxide, extraction of carbon from seawater has been studied.

Since xenon is a volatile noble gas it can be assumed that there wasn't much of it in the rock to begin with.

Since 80 % or more of the oxygen remains in normal exhaled gas, and is thus wasted, rebreathers use gas very economically, making longer dives possible and special mixes cheaper to use at the cost of more complicated technology and more possible failure points.

Since the UNFCCC entered into force, the parties have been meeting annually in Conferences of the Parties ( COP ) to assess progress in dealing with climate change, and beginning in the mid-1990s, to negotiate the Kyoto Protocol to establish legally binding obligations for developed countries to reduce their greenhouse gas emissions.

Since it is in the gas phase, the amount of vapor present is quantified by the partial pressure of the gas.

Since the force imparted by a magnetic field is proportional to the charge on the particle, and the acceleration is proportional to the force divided by the mass of the particle, the magnets required to contain uranium gas would be impractically large ; most such designs have focussed on fuel cycles that do not depend upon retaining the fuel in the reactor.

Since the dielectric strength of gases varies depending on the shape and configuration of the electrodes, it is usually measured as a fraction of the dielectric strength of Nitrogen gas.

Since then, the U. S. has contributed to other large infrastructure programs including the Interstate Highway System, 1956-1990, with a dedicated financing system through the gas tax and a matching contribution between federal government and states at 90 % to 10 %.

Since thrust depends on both the amount of gas moved and the velocity, we can generate high thrust by accelerating a large mass of gas by a small amount, or by accelerating a small mass of gas by a large amount.

Since oil and gas pipelines are an important asset of the economic development of almost any country, it has been required either by government regulations or internal policies to ensure the safety of the assets, and the population and environment where these pipelines run.

Since quartz is very strong, the gas pressure can be higher, which reduces the rate of evaporation of the filament, permitting it to run a higher temperature ( and so luminous efficacy ) for the same average life.

Since methane clathrates are stable at a higher temperature than liquefied natural gas ( LNG ) (− 20 vs − 162 ° C ), there is some interest in converting natural gas into clathrates rather than liquifying it when transporting it by seagoing vessels.

Since then, large natural gas reserves have also been discovered.

Since there are almost no schools in the country offering graduate work in interior design this rule cannot at present be observed.

Since a national interpretation cannot be avoided it is unfortunate that the elections were not held in a way to maximize party responsibility and the educational effect of mass political participation.

Since this type of item was not in the statute when section 381 was enacted in 1954, one cannot say with certainty what effect the enactment of that section should have.

Since the railroad cannot reduce the salary of individual union members under contract, it must accomplish its payroll reduction by placing some of the men on furlough, a B. & O. spokesman said.

Since apurva is non-sentient, it cannot act unless moved by an intelligent being such as a god.

Since a player cannot control another player's bids, and since all bids are non-refundable, the auction involves a considerable amount of strategizing and prioritization by players.

Since they have paid points for the items, they are a part of the character's legend, and cannot lightly be destroyed.

Since the implementation of the Statute of Westminster 1931 in each of the Commonwealth realms ( on successive dates from 1931 onwards ), the Act of Settlement cannot be altered in any realm except by that realm's own parliament and, by convention, only with the consent of all the other realms, as it touches on the succession to the shared throne.

Since inside pitching is a legitimate tactic in baseball, courts have recognized that being hit by a pitch is an inherent risk of the game, so that players cannot sue for any resulting injuries.

Since there are infinitely many positive integers, this means that there are positive integers that cannot be defined by phrases of under eleven words.

Since Carmichael numbers exist, this primality test cannot be relied upon to prove the primality of a number, although it can still be used to prove a number is composite.

Since μ is a function of x, we cannot simplify any further directly.

Since no variables of this language range over the reals, we cannot simply copy the earlier definition of definability.

Since non-Euclidean geometry is provably relatively consistent with Euclidean geometry, the parallel postulate cannot be proved from the other postulates.

Since electrical energy cannot easily be stored in quantities large enough to meet demands on a national scale, at all times exactly as much must be produced as is required.

Since the valves of the heart do not receive any dedicated blood supply, defensive immune mechanisms ( such as white blood cells ) cannot directly reach the valves via the bloodstream.

Since details of fact change constantly, these cannot be the most important.

Since it was a work created by the US federal government, a copyright cannot be placed on the source code, making the source code in the public domain.

Since every sequence of real numbers can be used to construct a real not in the sequence, the real numbers cannot be written as a sequence — that is, the real numbers are not countable.

Since the base of the case must be hard, it cannot be annealed.

Since the Church did not make either of these laws, she cannot be their arbiter — only their guardian and interpreter.

Since one cannot logically consider these subjects to be both " at the same moment " and " away in time ", an exclusive choice has to be made that defines these two separate domains, B and C. Our reality or domain B is created by the complex, but consistent transformation of A by our biological and mental makeup.

According to the what economist Nicholas Barr describes as the " classical definition of income :" the 1938 Haig-Simons definition, " income may be defined as the ... sum of ( 1 ) the market value of rights exercised in consumption and ( 2 ) the change in the value of the store of property rights ..." Since the consumption potential of non-monetary goods, such as leisure, cannot be measured, monetary income may be thought of as a proxy for full income.

Since 1927 South Australia has permitted majority verdicts of 11: 1, and 10: 1 or 9: 1 where the jury has been reduced, in criminal trials if a unanimous verdict cannot be reached in four hours.

Since there has been a lot of cross-fertilization between these styles, with many practitioners training or competing under the rules of more than one style, the history of the individual styles cannot be seen in isolation from one another.