For example, NASA's workhorse space shuttle used cryogenic hydrogen / oxygen propellant as its primary means of getting into orbit, and all of the rockets built for the Soviet space program by Sergei Korolev used liquid oxygen as their oxidiser.

The pairing of bases in DNA through hydrogen bonding means that the information contained within each strand is redundant.

; cis: A cis configuration means that adjacent hydrogen atoms are on the same side of the double bond.

; trans: A trans configuration, by contrast, means that the next two hydrogen atoms are bound to opposite sides of the double bond.

In 1766 – 81, Henry Cavendish was the first to recognize that hydrogen gas was a discrete substance, and that it produces water when burned, a property which later gave it its name: in Greek, hydrogen means " water-former ".

The dependence of the hydrogen fusion rate on temperature and pressure means that it is only when it is compressed and heated at the surface of the white dwarf to a temperature of some 20 million kelvin that a nuclear fusion reaction occurs ; at these temperatures, hydrogen burns via the CNO cycle.

At $ 0. 03 / kWh, common off-peak high-voltage line rate in the United States, this means hydrogen costs $ 1. 50 a kilogram for the electricity, equivalent to $ 1. 50 a U. S. gallon for gasoline if used in a fuel cell vehicle.

** Hydrogen dissolves rather well in metals, especially in palladium ; this is studied as a means of hydrogen storage.

The lower excess thrust of the hydrogen engines due to the lower thrust / weight ratio means that the vehicle must ascend more steeply, and so less thrust acts horizontally.

The energy required to split water into hydrogen and oxygen by electrolysis or any other means is greater than the energy that can be collected when the hydrogen and oxygen recombine.

This means that the ramjet scoop must sweep 10 < sup > 21 </ sup > cubic meters of space ( approximately the volume of the Earth ) to collect one kilogram of hydrogen.

Some other insiders, including Arnie Gundersen, a former nuclear industry executive who is now an expert witness in nuclear safety issues, make the same claim ; Gundersen offers evidence, based on pressure monitoring data, for a hydrogen explosion shortly before 2 pm on March 28, 1979, which would have provided the means for a high dose of radiation to occur.

Various metal hydrides have been examined for use as a means of hydrogen storage for fuel cell-powered electric cars and other purposed aspects of a hydrogen economy.

This material has been discussed as a means to carry hydrogen for vehicular fuel cells.

And thirdly, technological advances in spacecraft drive systems — specifically the ' asymptotic drive ' which improves the fuel efficiency by orders of magnitude — means that Titan's whole economy is under threat as the demand for hydrogen is about to collapse.

Fomalhaut is slightly metal-deficient as compared to the Sun, which means it is composed of a smaller percentage of elements other than hydrogen and helium.

Astronomers categorize it as a main-sequence star of spectral class K2, which means that energy generated at the core through nuclear fusion of hydrogen is emitted from the surface at a temperature of about 5, 000 K, giving the star an orange hue.

The disadvantages of LH2 / LOX engines are the low density and low temperature of liquid hydrogen, which means bigger and insulated and thus heavier fuel tanks are needed.

Ross 128 is an old disk star, which means it has a low abundance of elements other than hydrogen and helium, what astronomers term the star's metallicity, and it orbits near the plane of the Milky Way galaxy.

In units of the wavelength of the hyperfine transition of hydrogen this means 8 × 21 cm = 168 cm.

The greater scattering power of protons and deuterons means that the position of hydrogen in a crystal and its thermal motions can be determined with greater precision by neutron diffraction.

This means that as time passes, an employee accumulates additional sick or vacation time and this time is placed into a bank.

In the Manu tongue, `` eromonga '' means manhood -- a quality which the women derisively toasted in weekly feasts at which great quantities of a brew like kava were imbibed.

by this term he means to ridicule their professions of acting in the interest of the Church despite their own education and manner of life -- a gibe, in other words, at the `` Presbyterianism '' in Harley's family and at Bolingbroke's reputed impiety.

Thoroughly modern in treatment, they are at the same time, full of simple sincerity which invariably characterizes genuine Negro folk-music and are by no means to be confused with the average ' Broadway Spirituals ' which depend for their racial flavor upon sundry allusions to the ' Amen Corner ', ' judgement Day, ' Gabriel's Horn, and a frustrated devil -- with a few random hallelujahs thrown in for good measure.

We see at once what Victor Hugo means when he calls Macbeth a northern scion of the house of Atreus.

He must show at the outset that he means exactly what he says.

In March, 1961, representatives of the national laboratories of Australia, Canada, The Netherlands, United Kingdom, U.S.S.R., United States, and West Germany, met at the NBS to devise means for reaching international agreement on a temperature scale between 10 and 90 Af.

For the year 2000 this means servicing ( A ) the protection requirements of a watershed producing at least 200 million acre-feet of water each year, ( B ) recreation and wildlife resources used each year by 635 million visitors, ( C ) a timber resource supporting an annual cut of 21 billion board feet, and ( D ) 60 million acres of rangelands.

Fortunately, it is the FHA which has arrived at this conclusion, for it means that cooling equipment of all kinds may now be included in a mortgage, and thus acquired with a minimum of financial stress.

By 1937 he had clarified his intentions to serve his people: `` I have striven for clarity and melodious idiom, but at the same time I have by no means attempted to restrict myself to the accepted methods of harmony and melody.

Though little democracy had ever been practised in this region, and much of it was still ruled by feudalistic means, it was taken for granted that at least the forms of Western democracy would be established in this area and Western capitalism preserved within it.

We do not arrive at spatial images by means of the sense of touch by itself.

Perhaps the very important question -- What is, then, exactly the role of kinesthetic sensations in the patient's ability to recognize forms and shapes by means of the tracing movements when he is actually looking at things??

Another theme, sinuously chromatic, appears as he directs her to gain power over Grigori by any means, even at the cost of her honor.

Basically, this means that simpler processing equipment ( the mixture has good flowing characteristics ) and less external heat ( the foaming reaction is exothermic and develops internal heat ) are required in one-shot foaming, although, at the same time, the problems of controlling the conditions of one-shot foaming are critical ones.

By means of charts showing wave-travel times and depths in the ocean at various locations, it is possible to estimate the rate of approach and probable time of arrival at Hawaii of a tsunami getting under way at any spot in the Pacific.

The gala is the Thrift Shop's annual bundle party and, as all Thrift Shop friends know, that means the admission is a bundle of used clothing in good condition, contributions of household equipment, bric-a-brac and such to stock the shelves at the shop's headquarters at 1213 Walnut St..

Black said COAHR `` hoped to be able to integrate the theaters without taking direct action, but we are pledged to using every legal and nonviolent means at our disposal ''

In any case it is by no means clear that formally structured organs of participation are what is called for at all.

That added traffic means rising streams of dimes and quarters at toll gates.

consequently an experienced children's librarian at headquarters conducts a guidance program designed to promote well-planned library activities, cooperating with the children's librarians in member libraries by means of individual conferences, workshops, and frequent visits.

The house has been swept so clean that contemporary man has been left with no means, or at best with wholly inadequate means, for dealing with his experience of spirit.