Some 19th-century or earlier experimental engines used external flames, exposed by valves, for ignition, but this becomes less attractive with increasing compression.

Some layout engines such as Trident / MSHTML and Presto are associated primarily or exclusively with a particular browser such as Internet Explorer and Opera respectively.

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 engines ( air or water cooled ) also have an oil cooler.

" Some unusual engines ", 1975 The Institution of Mechanical Engineers, London.

Some specialised search engines such as Google Scholar offer a way to facilitate searching for academic resources such as journal articles and research papers.

Some aviation engines as well as some early luxury cars have had dual-plugged systems with one set of plugs fired by a magneto, and the other set wired to a coil, dynamo, and battery circuit.

Some real-time software 3D engines based on ray tracing have been developed by hobbyist demo programmers since the late 1990s.

Some engines were equipped with a switch that cut out only some rather than all of the cylinders to ensure that the engine kept running and did not oil up.

Some search engines apply improvements to search queries to increase the likelihood of providing a quality set of items through a process known as query expansion.

Some SSTO vehicles use the same engine for all altitudes, which is a problem for traditional engines with a bell-shaped nozzle.

Some SSTO vehicles simply use very high pressure engines which permit high ratios to be used from ground level.

Some designs for SSTO attempt to use airbreathing jet engines that collect oxidiser and reaction mass from the atmosphere to reduce the take-off weight of the vehicle.

Some commercial aircraft with turboprop engines include the Bombardier Dash 8, ATR 42, ATR 72, BAe Jetstream 31, Embraer EMB 120 Brasilia, Fairchild Swearingen Metroliner, Saab 340 and 2000, Xian MA60, Xian MA600, and Xian MA700, Fokker 27, 50 and 60.

Some of the most popular and successful online sites or search engines of the 2000s included Google, Yahoo !, Wikipedia, Amazon, eBay, MySpace, Facebook, Twitter, and YouTube.

Some search engines, like Yahoo, use automated processes to detect soft 404s.

Some 100-200 engines completed their mission on Soviet and Russian satellites until the late 1990s.

Some are carbureted, usually the smaller engines.

Some of the Shuttle systems integrated in the simulation are the main propulsion system, main engines, solid rocket boosters, ground liquid hydrogen and liquid oxygen, external tank, flight controls, navigation, and avionics.

Some search engines give a higher rank to results where the keyword searched for appears in the URL.

Some search engines like Vivísimo try to group found web pages into automated categories in an attempt to show various genres the search hits might fit.

Some older biplane designs, such as the Grumman Ag Cat and the aforementioned An-2 ( in the form of the An-3 ) are available in upgraded versions with turboprop engines.

Some small propeller-driven aircraft engines still use the updraft carburetor design.

Some lower-compression piston engines can operate on unleaded mogas, and turbine engines and diesel engines — neither of which requires lead — are appearing on some newer light aircraft.

Some members of the organization called attention also to the article on hymns of inspiration, the Daily Prayer and Three Minutes A Day, as being very helpful.

Some recreation features, such as scenic values and water interest, also have greater overall value than other interests.

Some of those who did not initially react with an arm-elevation also associated their behavior in the situation with control factors -- an inability to relinquish control voluntarily.

Some are also in Albania and others are on loan to Egypt.

Some time after this mosaic was executed, the earliest depictions of Christ would also be beardless and haloed.

Some signs that are created with a 1 handshape can also be made using an L or a 5 handshape ( open handshape ).

Some 98 % of Antarctica is covered by the Antarctic ice sheet, the world's largest ice sheet and also its largest reservoir of fresh water.

Some non-benzene-based compounds called heteroarenes, which follow Hückel's rule, are also aromatic compounds.

Some states also define assault as an attempt to menace ( or actual menacing ) by placing another person in fear of imminent serious bodily injury.

Some lists also mention 1-555-1313 as ANAC ( 506 New Brunswick ).

Some have understood Ammianus's testimony as a claim that at the time of Atlantis's actual sinking into the sea, its inhabitants fled to western Europe ; but Ammianus in fact says that “ the Drasidae ( Druids ) recall that a part of the population is indigenous but others also migrated in from islands and lands beyond the Rhine " ( Res Gestae 15. 9 ), an indication that the immigrants came to Gaul from the north ( Britain, the Netherlands or Germany ), not from a theorized location in the Atlantic Ocean to the south-west.

Some have also begun using non-wood materials, such as plastic or graphite.

Some also claim it to be the oldest subway tunnel in the world, as it was built by the cut and cover method under a city street, specifically for the purposes of improved public safety, attaining grade separation and enhanced railway operations.

Some also include the western part of Hants County, including the towns of Hantsport and Windsor even further to the east, but geographically speaking they are part of the Avon River valley.

Some remixes, particularly in dance music, can also be considered re-arrangements in this style.

Some evidence also suggests ACE inhibitors might increase inflammation-related pain, perhaps mediated by the buildup of bradykinin that accompanies ACE inhibition.

Some also banned fishing for some time each year.

Some also block or partially block serotonin receptors ( particularly 5HT < sub > 2A, C </ sub > and 5HT < sub > 1A </ sub > receptors ): ranging from risperidone, which acts overwhelmingly on serotonin receptors, to amisulpride, which has no serotonergic activity.

Some critics have also analyzed the use of alleged front organizations and conflicted patient " advocacy " groups funded by pharmaceutical companies that seek to set the mental health agenda, including the use of the law to force people to take antipsychotics against their will, often justified by claims about risk of violence.

Some authors also define an alkali as a base that dissolves in water.

Some Afrobeat influence can also be found in the music of Vampire Weekend and Paul Simon.

Some of Whorf's unpublished manuscripts on spirituality also suggest that he was influenced by the ideas of Helena Blavatsky the founder of the Theosophical Society who wrote about cosmic evolution, a belief that regards reincarnation to be the source of evolution of human races towards continuously higher forms.

Some also release ova into the water, while others capture sperm via their tentacles to fertilize their ova internally.

Some assistance was provided to Belarus within the framework of the TACIS programme and also through various aid programs and loans.

Some also serve as middle-level technicians.