Since then, four other novae explosions have been proposed as helium novae.

Since the 1920s it had been suspected that the Sun shines because of nuclear fusion reactions that transform hydrogen into helium and release energy.

Since the sun has been fusing hydrogen into helium throughout its lifetime, the present day abundance of helium in the core can be used to infer the age of the sun, using numerical models of stellar evolution applied to the Sun ( Standard solar model ).

Since the luminosity rises, the star expands so that the helium fusion ceases, and the hydrogen shell burning restarts.

Since stars, which comprise most of the visible matter in the universe, are composed mostly of hydrogen and helium, astronomers use for convenience the blanket term " metal " to describe all other elements collectively.

Since the mid-1980s most 3D traps ( Paul traps ) have used ~ 1 mtorr of helium.

Since the air is a continuum, the network of communication remains intact regardless of the positions or motions of the points ( the people ) in the net.

Since 1947, a major historical re-enactment commemorating the Declaration's signing has been held within the roofless remains of the Abbey church.

Since the 2002 civil war in Côte d ' Ivoire, relations between it and Burkina Faso have been filled with accusations of Burkinabé support for rebels on one side and claims of mistreatment of Burkinabé workers on the other .< ref > Blaise Campaoré :<< La crise ivoirienne inquiète le Burkina >>, Le Figaro, December 11, 2005 </ ref > Côte d ' Ivoire remains Burkina Faso's largest regional trading partner in spite of their disputes and tens of thousands of Burkinabés continue to work in the Ivory Coast.

Since the Irish War of Independence, the name ' Boxing Day ' is used only by the authorities in Northern Ireland, which remains part of the UK.

Since these canids are called dholes only in English, the etymology remains unclear, but it may have come from (‘ wolf ’).

Since there was no law against stealing a dead body, they were only fined $ 750 for stealing the coffin and were not prosecuted for leaving 35 lbs of his charred remains in the desert.

Since World War II France has been a leading member in the UN, the European Union and NATO, and remains a strong economic, cultural, military and political influence in the 21st century.

Since the dopamine remains in the synapse longer, the neurotransmitter continues to bind to the receptors on the postsynaptic neuron, eliciting a pleasurable emotional response.

Since they were constructed of sun-dried mud-brick, little remains of them.

Since the mid-1990s, the term " kcmil " has been adopted as the " official " designation of a thousand circular mils, but the designation " MCM " still remains in wide use.

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 its removal for Shelagh's interment, his grave here remains unmarked.

Since the days of Charles Wesley, the hymn-writer and early Methodist leader, lively singing has been, and remains, an important aspect of United Methodist worship.

Since there are few documents on site with datable contents ( such as an Egyptian scarab ) and since no dendrochronology has yet been performed upon the remains here, the events are listed here according to Helladic period material culture.

Since then, Mondale has returned to working at the law firm of Dorsey & Whitney and remains active in the Democratic Party.

Since there are rarely any visible remains of these settlements, they are not generally considered ghost towns ; instead, they are referred to in archaeological circles as deserted medieval villages.

Since external torque is minimized by mounting the device in gimbals, its orientation remains nearly fixed, regardless of any motion of the platform on which it is mounted.

Since the r < sup > th </ sup > failure comes last, it remains to choose the k trials with successes out of the remaining k + r − 1 trials.

( Since the Lockerbie crash was a terrorist act in Scotland, the Staines crash remains England's worst air disaster, and Britain's worst air accident ). The crash was commemorated in June 2004, with the opening of a dedicated garden near the crash site, created at the request of relatives, and the unveiling of a stained glass window at St. Marys Church, where a memorial service was held.

" Since the conclusion of the trial, Susan Levy has moved to keep photographic evidence of her daughter's remains sealed from the news media.

Since then, numerous impact craters have been identified around the world, though Meteor Crater remains one of the most visually impressive owing to its size, young age, and lack of vegetative cover.

Since then it remains as the capital of Cyprus.

Since much of the modern city and its environs is built over Roman remains, it is still not uncommon to unearth Roman artifacts several miles away.

Since completion, the Columbus Lighthouse, which supposedly houses Columbus ' remains, has been a minor tourist attraction.

Since honey normally exists below its melting point, it is a supercooled liquid.

Since lyotropic liquid crystals rely on a subtle balance of intermolecular interactions, it is more difficult to analyze their structures and properties than those of thermotropic liquid crystals.

Since S-waves do not pass through liquids, the liquid core causes a " shadow " on the side of the planet opposite of the earthquake where no direct S-waves are observed.

Since liquid hydrogen has a density of about 70 kg / m³, this represents a flow of about 1, 725 litres per second, about three times that of the J-2.

Since less water or liquid has to be heated, the food reaches its cooking temperature faster.

Since shear waves cannot pass through liquids, this phenomenon was original evidence for the now well-established observation that the Earth has a liquid outer core, as demonstrated by Richard Dixon Oldham.

Since mechanical systems try to find a state of minimum potential energy, a free droplet of liquid naturally assumes a spherical shape, which has the minimum surface area for a given volume.

Since the 1990s, " colloidal silver ", a liquid suspension of microscopic silver particles, has been marketed as an alternative medicine, often claiming impressive " cure-all " qualities.

Since air has a lower heat capacity and density than liquid coolants, a fairly large volume flow rate ( relative to the coolant's ) must be blown through the radiator core to capture the heat from the coolant.

Since the lighter liquid products are in great demand for use in internal combustion engines, a modern refinery will convert heavy hydrocarbons and lighter gaseous elements into these higher value products.

Since the gas and liquid volumes are functions of < i > P < sub > V </ sub ></ i > and T only, this equation is then solved numerically to obtain < i > P < sub > V </ sub ></ i > as a function of temperature ( and number of particles N ), which may then be used to determine the gas and liquid volumes.

Since then machines that freeze biological samples using programmable steps, or controlled rates, have been used all over the world for human, animal and cell biology – ' freezing down ' a sample to better preserve it for eventual thawing, before it is deep frozen, or cryopreserved, in liquid nitrogen.

Since almost all seals utilize the process liquid or gas to lubricate the seal faces, they are designed to leak.

Since the green arrow is perpendicular to the surface of the liquid, the slope of the surface must equal the quotient of these forces:

Since the liquid to gas expansion ratio of nitrogen is 1: 694 at, a tremendous amount of force can be generated if liquid nitrogen is rapidly vaporized.

Since water vapor gives up heat energy when it changes from vapor to liquid, the liquid water value is larger since it includes the latent heat of vaporization of water.

Since the density of the LOX ( liquid oxygen ) was higher than that of the Kerosene, extra pressure was available with the LOX, and it was to be used to cool the engine's throat and other components.

Since buoyancy force is linear with respect to the density of the liquid within which the float is submerged, the measure of the buoyancy force yields a measure of the density of the liquid.

Since the mass of the oxidizer is, at takeoff, the single largest mass of most rocket designs ( the Space Shuttle's liquid oxygen tank weighs 629, 340 kg, more than one of its solid rocket boosters ), this provides a huge potential weight savings benefit.