Many applications, practices, and devices associated or involved in metallurgy were established in ancient China, such as the innovation of the blast furnace, cast iron, hydraulic-powered trip hammers, and double acting piston bellows.

The piston is returned to the cylinder top ( Top Dead Centre ) by a flywheel, the power from other pistons connected to the same shaft or ( in a double acting cylinder ) by the same process acting on the other side of the piston.

Another major conspiracy was the Babington Plot-the event which most directly led to Mary's execution, the discovery of which involved a double agent Gilbert Gifford acting under the direction of Francis Walsingham, the Queen's highly effective spy master.

The Ngôs were unaware Thảo, ostensibly a Catholic, was in fact a communist double agent acting to turn the rural populace against Saigon.

Lou Costello ( 1906 — 1959 ) had been a burlesque comic since 1930, after failing to break into movie acting and working as a stunt double and film extra.

They patented a double cylinder direct acting engine in 1839.

Before the development of the double acting piston, the linkage to the beam and the piston rod had been by means of a chain, which meant that power could only be applied in one direction, by pulling.

Four double acting hydraulic shock absorbers with coil springs.

Baking powders that contain both fast-and slow-acting acids are double acting ; those that contain only one acid are single acting.

The piston rod is mounted on the underside of the piston and connected to the crosshead by a single nut in double acting engines.

An exception is the oscillating cylinder steam engine which can be double acting and yet has no crosshead.

The same applies to double acting diesel engines ( see also: H class battleship ( 1939 ): 12 MAN double-acting 2-stroke 9-cylinder diesels ).

Torp led his cabinet for four years, and also had to double as acting Minister of Trade and Shipping from 3 to 15 June 1954.

The principle of double effect ; also known as the rule of double effect ; the doctrine of double effect, often abbreviated as DDE or PDE, double-effect reasoning ; or simply double effect, is a set of ethical criteria which Christians, and some others, use for evaluating the permissibility of acting when one's otherwise legitimate act ( for example, relieving a terminally ill patient's pain ) will also cause an effect one would normally be obliged to avoid ( for example, the patient's death ).

A further example, originating from physics ( see quantum mechanics ), is the special orthogonal group of rotations of, which has the " double " covering group of unitary rotations of ( in quantum mechanics acting as the group of spinor rotations ).

Bonpensiero claimed that he had been acting as a double agent as a strategy to feed misinformation to the FBI.

Most have a paint pump ( also called a lower ) that is a double acting piston, in which the piston pumps the paint in both the down and the upstroke.

Prior to acting in Malayalam movies, he worked as a stunt double for Bollywood star Dev Anand.

This kindled his enthusiasm for acting, and he was hired by film studios as a bit part actor, stuntman and body double.

By the time the government killed the project in 1842, they had given Babbage over ₤ 17, 000, more than double the cost of a warship, without receiving a working engine.

This was based on the Karp-class which had a double hull, was powered by a Körting kerosene engine and armed with a single torpedo tube.

In 1914, an advanced Grand Prix car was designed and built, the GP1914, which featured a four-cylinder engine, double overhead camshafts, four valves per cylinder and twin ignition.

For the 1913 French Grand Prix, an improved L5 ( with engine ) was produced with a pioneering ballbearing crankshaft, gear-driven camshafts, and dry sump lubrication, all of which soon became standard on racing cars ; unfortunately, Zuccarelli was killed during testing on public roads, but Boillot easily won the event, making him ( and Peugeot ) the race's first double winner.

He believed that he could design a better engine and did so, inventing his double sleeve principle in 1904.

While today some cheaper engines rely on a single camshaft per cylinder bank, which is known as a single overhead camshaft ( SOHC ), most modern engine designs ( the overhead-valve or OHV engine being largely obsolete on passenger vehicles ), are driven by a two camshafts per cylinder bank arrangement ( one camshaft for the intake valves and another for the exhaust valves ); such camshaft arrangement is known as a double or dual overhead cam ( DOHC ), thus, a V engine, which has two separate cylinder banks, may have four camshafts ( colloquially known as a quad-cam engine ).

The Vega production cars ( Facel FV, later and more famously the HK500 ) appeared in 1954 using Chrysler V8 engines, at first a DeSoto Hemi engine ; the overall engineering was straightforward, with a tubular chassis, double wishbone suspension at the front and a solid driven axle at the back, as in standard American practice.

Cosworth increased its association with Ford in 1969, by developing a double overhead camshaft ( DOHC ) 16-valve inline four-cylinder engine for road use in the Ford Escort.

In the case of the steam engine, a crosshead is essential if the engine is to be double acting-steam is applied to both sides of the piston, which requires a seal around the piston rod.

The rear section of the Kitten's chassis is essentially the same as the Reliant Robin or Reliant Rialto, however from the middle forwards the car is significantly different, with the engine moved forward to where the Robin's front wheel is, and a Reliant-designed ( but Lotus inspired ) double wishbone front suspension.

Computer generated image showing the major internal moving parts of an inline-four engine with belt-driven double overhead camshafts and 4 valves per cylinder.

The vehicle has a double bottom and the engine is located under the floor of the vehicle ( troops enter / leave the vehicle over the engine ).

This engine contained a different camshaft profile, a different cast of head featuring larger ports, tubular exhaust headers and a Weber double barrel carburettor.

The Lotus engine also used a different cylinder head of light alloy, featuring double overhead camshafts and four valves per cylinder.

The Saab 900 was a front-engined, front-wheel-drive compact car with a longitudinally mounted, 45-degree slanted, L 4-cylinder engine, double wishbone front suspension and beam-axle rear suspension.

The original 1984 model was powered by a water-cooled, turbocharged, double overhead camshaft, 16-valve inline-four engine, providing.

At one point he also suggested that Tata Engineering and Locomotive Company ( TELCO ) be nationalized since they were charging nearly double the price of a Japanese railway engine.

'' Mark asked, and Abel lifted his eyes from the double lines in the middle of the road, the twin white ribbons which the car swallowed rapidly as it ascended the crest of the hill and came down.

My double was made with standard-weight revolver barrels ( before cutting to revolver length ), and although it compares well in other respects, it's considerably heavier than the Deerstalker, which only scales about 6-1/2 pounds.

-- Billy Gardner's line double, which just eluded the diving Minnie Minoso in left field, drove in Jim Lemon with the winning run with two out in the last of the ninth to give the Minnesota Twins a 6-5 victory over the Chicago White Sox Monday.

He is talking about double effects, of which the specific action causes directly the one and indirectly the other, but causes both ; ;

This leaves one to share with one of its two neighboring carbon atoms, which is why the benzene molecule is drawn with alternating single and double bonds around the hexagon.

Like single covalent bonds, double bonds can be described in terms of overlapping atomic orbitals, except that, unlike a single bond ( which consists of a single sigma bond ), a carbon-carbon double bond consists of one sigma bond and one pi bond.

Rotation about the carbon-carbon double bond is restricted because it involves breaking the pi bond, which requires a large amount of energy ( 264 kJ / mol in ethylene ).

An allene is a compound in which one carbon atom has double bonds with each of its two adjacent carbon centres.

A common theme is a mountain which blocked the Sun, but on the right day would allow the tiniest fraction to re-emerge on the other side for a ' double sunset '.

The animation below shows two sunsets at a hypothetical site, one the day before the summer solstice and one at the summer solstice, which has a double sunset.

This scene has been restored on the " directors cut bootleg edition " DVD and the double disk DVD, which also featured the cinematic version of the film.

There is a total of, ( double track ( as of 1998 )), of which are electrified, mainly at 3, 000 volts DC but with at 25 kV 50 Hz AC ( 2004 ) and all on standard gauge of.

* DP — Double plays: one for each double play during which the fielder recorded a putout or an assist.

In more recent years, pure steals of home are rare, although a player may steal home plate during a " delayed double steal ," in which a runner on first attempts to steal second, while the runner on third breaks for home as soon as the catcher throws to second base.

The four-string bass — by far the most common — is usually tuned the same as the double bass, which corresponds to pitches one octave lower than the four lower strings of a guitar ( E, A, D, and G ).

If one player has not borne off any checkers by the time that player's opponent has borne off all fifteen, then the player has lost a gammon, which counts for double a normal loss.

If the Crawford rule is in effect, then another option is the Holland rule, which stipulates that after the Crawford game, a player cannot double until after at least two rolls have been played by each side.

Following this they played Australia in a four-Test series which was drawn 2 – 2, with Lara scoring 546 runs including three centuries and one double hundred.

Each bulletin is read by a single sports presenter, with the exception of Saturday Sportsday, which is double headed.

However, the Jews at Jesus ' time were actually speaking Aramaic, in which language there would not have been a double meaning.

In organic chemistry a carbonate can also refer to a functional group within a larger molecule that contains a carbon atom bound to three oxygen atoms, one of which is double bonded.

In 1916, chemist Gilbert N. Lewis developed the concept of the electron-pair bond, in which two atoms may share one to six electrons, thus forming the single electron bond, a single bond, a double bond, or a triple bond ; in Lewis's own words, " An electron may form a part of the shell of two different atoms and cannot be said to belong to either one exclusively.

In this case, it is the placing of the two highest priority substituents with respect to the double bond which matters.

The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and unifies its contents from the cellular cytoplasm, and the nucleoskeleton ( which includes nuclear lamina ), a meshwork within the nucleus that adds mechanical support, much like the cytoskeleton, which supports the cell as a whole.