Protons and electrons bear opposite electrical charges which make them attract each other, and when they are joined they make up an atom of hydrogen -- the basic building block of matter.

Protons and neutrons are most important and best known for constituting atomic nuclei, but they can also be found on their own, not part of a larger nucleus.

All Protons are built at the Khrunichev plant in Moscow, and then transported for launch to the Baikonur Cosmodrome, where they are brought to the launch pad horizontally and then raised into vertical position for launch.

Protons are charged particles and are therefore influenced by magnetic fields.

Protons are generated in an ion source, which can have many different designs.

Protons ( H < sup >+</ sup >) are transported across the proton exchange membrane-often made from Nafion-to the cathode where they react with oxygen to produce water.

Protons are produced by a medical synchrotron or cyclotron, extracting them from proton donor materials and accelerating them in successive travels through a circular, evacuated conduit or cavity, using powerful magnets, until they reach sufficient energy ( usually about 200 MeV ) to enable them to approximately traverse a human body, then stop.

Protons are transferred across a series of hydrogen bond s between hydronium ion s and water molecule s.

Protons are pulled into the intermembrane space by the energy of the electrons going through the electron transport chain.

Protons on a molecule that are acidic, even only slightly, can be exchanged for a metal by a suitable butyllithium reagent mixture.

In nuclear physics the ratio N / Z ( number of Neutrons to number of Protons ) is close to one for light elements and then it grows to about 1. 5 because protons are less favourable in terms of stability due to the Coulomb repulsion.

Protons consist of two up quarks and one down quark, while antiprotons consist of the corresponding antiquarks.

In 2000, physicists first observed a new type of radioactive decay in which a nucleus emits two protons at once-perhaps a nucleus .< ref > Decay of a Resonance in < sup > 18 </ sup > Ne by the Simultaneous Emission of Two Protons, Physical Review Letters vol. 86, p. 43-46 ( 2001 ), by J. Gómez del Campo, A. Galindo-Uribarri et al .</ ref > The team led by Alfredo Galindo-Uribarri of the Oak Ridge National Laboratory announced that the discovery will help scientists understand the strong nuclear force and provide fresh insights into the creation of elements inside stars.

These he interpreted as " negative-energy electrons " and attempted to identify them with protons in his 1930 paper A Theory of Electrons and Protons However, these " negative-energy electrons " turned out to be positrons, and not protons.

In addition, the launch pad can supply existing Protons with common hypergol fuels from single sources.

Protons can also interact with the nucleus of the atoms in the sample through elastic collisions, Rutherford backscattering, often repelling the proton at angles close to 180 degrees.

Protons have a positive charge and a mass 1, 836 times that of the electron, at, although this can be reduced by changes to the energy binding the proton into an atom.

Protons on the SO < sub > 3 </ sub > H ( sulfonic acid ) groups " hop " from one acid site to another.

The most distal airways are similar to those found in type 1,, being composed of numerous, apparently true terminal bronchioles and occasional, poorly developed respiratory bronchioles ( figs. 14, 15 ).

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

Experiments are often composed of several identical trials, and sometimes experiments themselves are repeated.

If three dice are tossed, a trial is one toss of one die and the experiment is composed of three trials.

When this experiment is viewed as composed of five binomial trials, one for each member of the family, the outcomes of the trials are obviously not independent.

If the inner functions of religion are performed, the individual is a composed, ordered, motivated, and emotionally secure associate ; ;

Combellack argues further, and here he makes his main point, that once The Iliad and The Odyssey are thought formulaic poems composed for an audience accustomed to formulaic poetry, Homeric critics are deprived of an entire domain they previously found arable.

Although the fatty protein molecules, carried in the blood and partly composed of cholesterol, are water soluble, cholesterol itself is insoluble, and cannot be destroyed by the body.

The order of the books ( or the teachings from which they are composed ) is not certain, but this list was derived from analysis of Aristotle's writings.

UTC is a discontinuous time scale composed from segments that are linear transformations of atomic time, the discontinuities being arranged so that UTC approximated UT2 until the end of 1971, and UT1 thereafter.

The other parts are more stiff and are composed of intermediate filaments and microtubules.

The shells of amoebas are often composed of calcium.

The base and crown of these are composed of dentine separated by an uncalcified layer and they are replaced at intervals.

While most alphabets have letters composed of lines ( linear writing ), there are also exceptions such as the alphabets used in Braille, fingerspelling, and Morse code.

Ocean sediments are composed of:

This means that the game graphics are composed entirely of lines which are drawn on a vector monitor.

Two 13-person juries composed of artists, academics, critics and AFI Trustees deliberate, discuss and determine the honored ensembles, who are then feted at a private event in January.

However, both protons and neutrons are composite particles composed of elementary particles called quarks.

Within the sects of the Latter Day Saint movement, the Articles of Faith are a list composed by Joseph Smith, Jr. as part of an 1842 letter sent to " Long " John Wentworth, editor of the Chicago Democrat.

But in our case -- and neither my wife nor I have extreme views on integration, nor are we given to emotional outbursts -- the situation has ruined one or two valued friendships and come close to wrecking several more.

The two main charges levelled against the Bourbons by liberals is that they are racists and social reactionaries.

( There are two receivers in case one should be dropped and damaged.

It seems that for Persia, and especially for this city, there are only two times: the glorious past and the corrupt, depressing, sterile present.

The one apparent connection between the two is a score of buildings which somehow or other have survived and which naturally enough are called `` historical monuments ''.

These songs ( practically all Persian music, for that matter ) are limited to a range of two octaves.

Here are the two Preambles: Federal Constitution, 1789

Whatever pole of this contrast one emphasizes and whatever the tension between these two approaches to understanding the artistic imagination, it will be readily seen that they are not mutually exclusive, that they belong together.

But people can't be made to integrate, socialize ( the two are inseparable by Southern standards ) by law.

Of these there are surely few that would be more rewarding discoveries than Verner Von Heidenstam, the Swedish poet and novelist who received the award in 1916 and whose centennial was celebrated two years ago.

In the mystery story, as in The Wealth of Nations, individualism and the social good are two sides of the same benevolent coin.

So all-important are ideas, we are told, that persons successful in business and happy in social life usually fall into two classes: those who invent new ideas of their own, and those who borrow, beg, or steal from others.

These ways are absolutely irreconcilable because they offer two different recipes for man's redemption from chaos.

Within this context of spontaneous and unanalyzed responses to the experience of civilizational crisis, two basic organizations of response are observable: reaction and ideological progressivism.

There is probably some significance in the fact that two of the best incest stories I have encountered in recent years are burlesques of the incest myth.

Here, in two nations alone, are almost five hundred million people, all working, and working hard, to raise their standards, and in doing so, to make of themselves a strong bulwark against the spread of an ideology that would destroy liberty.

`` the matters to be considered are obviously of a grave character, and I therefore respectfully request that the hearing be postponed for two weeks in order that I might make adequate preparation ''.

Office workers frequently go out there to lunch and swim during the siesta period, which, during the summer, lasts from two until five in the afternoon, when shops and offices are again open for business.

But there are at least two reasons for contemplating one's mind in even a cracked mirror.

There are only two men remaining in Congress who, with Rayburn, voted for the declaration of war against Germany in 1917.

Regardless of the decision two facts are clear.

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

The speed is controlled by pressing on the two brake buttons located where the index finger and thumb are placed when holding the motor.

The biggest nuclear device the United States has exploded measured some 15 megatons, although our B-52s are said to be carrying two 20-megaton bombs apiece.