Some authorities advocate replacing bottled gas or natural gas with biogas.

Some 400 kilometers of the planned Nabucco Pipeline, bringing gas from Azerbaijan and Iran to Central Europe, were to cross Bulgaria sometime before 2011.

Some engines convert heat from noncombustive processes into mechanical work, for example a nuclear power plant uses the heat from the nuclear reaction to produce steam and drive a steam engine, or a gas turbine in a rocket engine may be driven by decomposing hydrogen peroxide.

Some able-bodied prisoners delivered to the death camp were not immediately killed, but were forced into labor units ( Sonderkommando ) to work at the extermination process, removing corpses from the gas chambers and burning them.

Some of this gas was used in the world's first helium-filled airship, the U. S. Navy's C-7, which flew its maiden voyage from Hampton Roads, Virginia, to Bolling Field in Washington, D. C., on December 1, 1921.

Some fraction of the nonvolatile product atoms carried along with the gas, were deposited permanently on the foil surface.

Some natural gas was discovered in 1974 in the Kudu Field off the mouth of the Orange River, but the extent of this find is only now being determined.

Some parenchyma cells, as in the epidermis, are specialized for light penetration and focusing or regulation of gas exchange, but others are among the least specialized cells in plant tissue, and may remain totipotent, capable of dividing to produce new populations of undifferentiated cells, throughout their lives.

Some scuba sets incorporate attached extra stage cylinders, as bailout in case the main breathing gas supply is used up or malfunctions, or containing another gas mixture.

Some terrestrial species lack both lungs and gills and perform gas exchange through their skin, a process known as valerian respiration in which the capillary beds are spread throughout the epidermis, and inside the mouth.

Some examples: the United Nations Framework Convention on Climate Change ( UNFCCC ) established a framework for the development of binding greenhouse gas emission limits, while the Kyoto Protocol contained the specific provisions and regulations later agreed upon.

Some " dry " transformers ( containing no liquid ) are enclosed in sealed, pressurized tanks and cooled by nitrogen or sulfur hexafluoride gas.

Some arachnids have structures called " book lungs " used for atmospheric gas exchange.

Some of these channels were filled with uranium fuel, others with a moderator, and some were left open as a gas channel.

Some kinetic sculptures contain other gaseous elements, such as the sculptures of Jean-Paul Riopelle's La Joute, which includes natural gas fire jets, a water fountain, and bronze sculptural elements.

In 1815, he published Mémoire sur les masses relatives des molécules des corps simples, ou densités présumées de leur gaz, et sur la constitution de quelques-uns de leur composés, pour servir de suite à l ' Essai sur le même sujet, publié dans le Journal de Physique, juillet 1811 (" Note on the Relative Masses of Elementary Molecules, or Suggested Densities of Their Gases, and on the Constituents of Some of Their Compounds, As a Follow-up to the Essay on the Same Subject, Published in the Journal of Physics, July 1811 ") (), about gas densities.

Some coaxial lines use air ( or some other gas ) and have spacers to keep the inner conductor from touching the shield.

Some fuels like natural gas, for instance, contain only very low boiling, gaseous components.

" Some researchers suggest the possibility that ethylene gas caused the Pythia's state of inspiration.

Some modern masks have a see-through visor in the front of the mask.

Some early single hose scuba sets used full-face masks instead of a mouthpiece, such as those made by Desco and Scott Aviation ( who continue to make breathing units of this configuration for use by firefighters ).

Some sources indicate these portraits were busts, while others suggest that funeral masks were also displayed.

Some airsoft masks are made with mesh screens, although there is debate that fragments from lower quality or bio-degradable BBs may pass through the mesh and enter the eye.

Some members were sent to the colony of Hegewald for such efforts even when they had to receive gas masks and soldier escorts.

Some of the latest welding masks are fitted with an electric powered fan to help disperse harmful fumes.

Some African tribes believe that the animal masks can help them communicate with the spirits who live in forests or open savannas.

Some researchers have interpreted this through the Slavic folk belief in werewolves, whilst others believe that Herodotus actually referred to ancient Slavic carnival festivals, when groups of young men roamed the villages in masks, sometimes referred to as vucari ( wolf-humans ).

Some people believe it comes from the French " L ' inconnu ", which means, " the unknown ", in reference to the masks worn by the paraders.

Some techniques involved using animal head masks worn as a disguise.

Some people make masks and there are many kinds of performances, so it is a lot of fun.

Some masks are designed to dry or solidify on the face, almost like plaster ; others just remain wet.

Some facial masks are not suited to frequent use.

Some full-face masks " float " on the face like a hover-craft, with thin, soft, flexible " curtains " ensuring less skin abrasion, and the possibility of coughing and yawning.

Some masks may have two lenses, which in some cases allows the user to fit prescription lenses.

Some masks have a one-way purge valve under the nose to let water out.

Some British Army and Russian gas masks are designed so that when the wearer breathes in, the inflow of air blows over the inside of the mask window and tends to evaporate any mist deposit on it.

Some face wrestlers would often give high fives or give out their own personal merchandise while entering the ring before their match, such as t-shirts, sunglasses, hats, masks, etc.

Some of the fans even wore dog masks and threw dog biscuits at opposing players.

( Some countries already have laws banning the wearing of masks in public, which can be applied to veils that conceal the face ).

High profiled " Luchas de Apuestas " include El Santo winning the mask of Black Spirit, Los Villaños winning the masks of all three Los Brazos ( El Brazo, Brazo de Oro and Brazo de Plata ), Atlantis winning the match of Villaño III, La Parka unmasking both Cibernético and El Mesias, Villaño V taking Blue Panther's mask and Último Guerrero winning the mask of Villaño V. Some wrestlers have made a career by the volume of masks they have won rather than the general quality of their opponents — wrestler Super Muñeco claims to have won over 100 masks, with at least 80 verifiable " Luchas de Apuestas " wins, while Estrella Blanca is said to have the most Luchas de Apuestas with over 200 masks won.

Some of us might be inclined to argue, in fact, that an independence of mind and action and an intolerance of regimentation, either mental or physical, are particularly Southern traits.

Some years ago Julian Huxley proposed to an audience made up of members of the British Association for the Advancement of Science that `` man's supernormal or extra-sensory faculties are ( now ) in the same case as were his mathematical faculties during the ice age ''.

Some are fishing, some driving the team, and many are sitting indolently on the banks of the river.

Some historians have found his point of view not to their taste, others have complained that he makes the Tory tradition appear `` contemptible rather than intelligible '', while a sympathetic critic has remarked that the `` intricate interplay of social dynamics and political activity of which, at times, politicians are the ignorant marionettes is not a field for the exercise of his talents ''.

Some of the marble busts in the park are of young Englishmen who fought and died for Garibaldi.

Some accounts are quite lengthy but Florida's is the shortest of all, requiring only four paragraphs.

Some plant-location specialists take these signs to mean St. Louis county doesn't want industry, and so they avoid the area, and more jobs are lost.

Some fiscal changes are important.

Some brilliant rookies nailed them down, so that this spring just two spots, left and right field, are really up for grabs.

Some of the stumps are as much as three feet long, but most of them have been flattened by the pressure of the overlying sediments.

Some privately held inholdings are a source of direct damage to these Federal lands.

Some 45 frequencies are assigned for use primarily by dominant Class 1, -- A or Class 1, -- B clear-channel stations, designed to operate with adequate power and to provide service -- both groundwave and ( at night ) skywave -- over large areas and at great distances, being protected against interference to the degree necessary to achieve this objective.

Some deductions are subtracted from Gross Income to determine Adjusted Gross Income.

Some renditions are of symphonic dimensions, with the contrabass given free rein.

Some of them are obvious, such as the fact that we associate recorded and live music with our responses and behavior in different types of environments and social settings.

Some tasty frank toppings are chili con carne, Coney Island sauce and savory sauerkraut.

Some general things to look for in a site, if you haven't already bought one, are accessibility, water drainage, and orientation.

Some distribution costs are kept up by competitive pressure, some by the fact that the customers have come to expect certain niceties and flourishes.

Some of these temperatures are plotted in figure 4.

( Some suspensions break up before they are near to the direction of shear, and some become asymptotic to it without breakup.

Some experiments are composed of repetitions of independent trials, each with two possible outcomes.

Some of these speculations may have some merit, others are somewhat ambiguous.

Some phonetic features, for example glottal catch or murmur, are sometimes to be assigned to segmental phonemics and sometimes to accentual systems.

Some are failing to achieve as much as their ability would permit ; ;