The second longest-lived isotope of astatine, astatine-211, is the only one currently having any commercial application, being employed in medicine to diagnose and treat some diseases via its emission of alpha particles ( helium-4 nuclei ).

The second important berkelium isotope, berkelium-247, is an alpha-emitter, as are most actinide isotopes.

A second method of laser separation is known as molecular laser isotope separation ( MLIS ).

When an isotope decays into a very short-lived isotope and then decays again to a relatively long-lived isotope, the products of the second decay are delayed.

< sup > 149 </ sup > Sm is a stable isotope of samarium, and a fission product ( yield 1. 0888 %) which is also a neutron-absorbing nuclear poison with significant effect on nuclear reactor operation, second only to < sup > 135 </ sup > Xe.

The primary decay mode before the second most abundant stable isotope, < sup > 112 </ sup > Cd, is electron capture and the primary modes after are beta emission and electron capture.

Pu-239, a fissile isotope which is the second most used nuclear fuel in nuclear reactors after U-235, and the most used fuel in the fission portion of nuclear weapons, is produced from U-238 by neutron capture followed by two beta decays.

In plutonium that has been used a second time in thermal reactors in MOX fuel, Pu-240 may even be the most common isotope.

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In the second example CH < sub > 3 </ sub > COOH undergoes the same transformation, in this case donating a proton to ammonia ( NH < sub > 3 </ sub >), but cannot be described using the Arrhenius definition of an acid because the reaction does not produce hydronium.

In the second reaction hydrogen chloride and ammonia ( dissolved in benzene ) react to form solid ammonium chloride in a benzene solvent and in the third gaseous HCl and NH < sub > 3 </ sub > combine to form the solid.

In practical terms, the ampere is a measure of the amount of electric charge passing a point in an electric circuit per unit time with 6. 241 × 10 < sup > 18 </ sup > electrons, or one coulomb per second constituting one ampere.

As the speed of light in meters per second ( c < sub > 0 </ sub >) is fixed in the International System of Units, this measurement of the speed of light in AU / d ( c < sub > AU </ sub >) also determines the value of the astronomical unit in meters ( A ):

If the first allele is dominant to the second, then the fraction of the population that will show the dominant phenotype is p < sup > 2 </ sup > + 2pq, and the fraction with the recessive phenotype is q < sup > 2 </ sup >.

The caustic, in the first case, resembles the sign > ( greater than ); in the second < ( less than ).

He theorized this could focus 10 < sup > 23 </ sup > protons per second on a 1 mm < sup > 2 </ sup > surface, then envisaged making two such beams collide.

By lowering the activation energy, the enzyme speeds up that reaction by a rate of 10 < sup > 11 </ sup > or more: a reaction that would normally take over 3, 000 years to complete spontaneously might take less than a second with an enzyme.

Classical mechanics is unable to determine this distance because of the enormous number of bombardments a Brownian particle will undergo, roughly of the order of 10 < sup > 21 </ sup > collisions per second.

The Bessel functions of the second kind, denoted by Y < sub > α </ sub >( x ), occasionally denoted instead by N < sub > α </ sub >( x ), are solutions of the Bessel differential equation.

Plot of Bessel function of the second kind, Y < sub > α </ sub >( x ), for integer orders α = 0, 1, 2.

Y < sub > α </ sub >( x ) is necessary as the second linearly independent solution of the Bessel's equation when α is an integer.

If the convention B < sub > 1 </ sub >=− is used, this sequence is also known as the first Bernoulli numbers ( / in OEIS ); with the convention B < sub > 1 </ sub >=+ is known as the second Bernoulli numbers ( / in OEIS ).

Unfortunately in the literature the definition is given in two variants: Despite the fact that Bernoulli defined B < sub > 1 </ sub > = 1 / 2 ( now known as " second Bernoulli numbers "), some authors set B < sub > 1 </ sub > = − 1 / 2 (" first Bernoulli numbers ").

The first and second Bernoulli numbers now follow by setting n = 0 ( resulting in B < sub > 1 </ sub >=−, " first Bernoulli numbers ") respectively n = 1 ( resulting in B < sub > 1 </ sub >=+, " second Bernoulli numbers ").

At room temperature, the average speed of these random motions is 10 < sup > 6 </ sup > metres per second.

For example, in a copper wire of cross-section 0. 5 mm < sup > 2 </ sup >, carrying a current of 5 A, the drift velocity of the electrons is on the order of a millimetre per second.

Calreticulin is a multifunctional protein that binds Ca < sup > 2 +</ sup > ions ( a second messenger in signal transduction ), rendering it inactive.

Denmark's general coastline is much shorter, at, as it would, among other geographical features, not include most of the 1, 419 offshore islands ( each defined as exceeding 100 square meters in area ) and the 180 km long Limfjorden, which separates Denmark's second largest island, North Jutlandic Island, 4, 686 km < sup > 2 </ sup > in size, from the rest of Jutland.

Colloquially referred to as the New World, this second super continent came to be termed " America ", probably deriving its name from the feminized Latin version of Vespucci's first name .< ref > Rival explanations have been proposed ( see Arciniegas, Germán.

Church, Ministry and Sacraments in the New Testament Paternoster Press: 1993, p. 95 </ ref > Jalland comes to a similar conclusion and locates the change from the " polyepiscopacy " of the house churches in Rome to monepiscopacy as occurring before the middle of the second century.

The peace process collapsed following the outbreak of the second Palestinian ( Intifada ) uprising in September 2000, though Syria continues to call for a comprehensive settlement based on UN Security Council Resolutions 242 and 338, and the land-for-peace formula adopted at the 1991 Madrid conference.

The third section of the park is located on the west side of the second and was inaugurated in 1974 with a surface area of 242. 9 hectares.

The following week, the wide release of Anastasia in the United States made $ 14, 242, 807, which placed it as the second highest-grossing film between November 21-23, 1997.

In the fiscal year of 2007-08, total expenses claims amounted to £ 121, 809, of which second home allowance was £ 1, 242.

The Human Development Index Municipal ( HDI ) of Goiânia is considered high by the United Nations Development Programme ( UNDP ), its value being 0. 832, the second largest of any state of Goiás ( in 242 municipalities ); third of all Midwest Region of Brazil ( in 446 ) and 111 ° from all over Brazil ( in 5507 ).

The Air Service shall consist of one Chief of Air Service with the rank of major-general, one assistant with the rank of brigadier-general, 1, 514 officers in grades from colonel to second lieutenant, inclusive, and 16, 000 enlisted men, including not to exceed 2, 500 flying cadets ... — Section 13a, Public Law 242, 41 Stat.

In the first round of the election he polled 10, 242 votes, 0. 03 % of the total, and was eliminated from the second round.

Prior to the publishing of the Modernisation Plan advocating the change-over to diesel traction, there was a proposal to construct a second batch of the Clan Class, which was accepted as Crewe Works Order Lot 242.

In countrywide deposition of radionuclides, Sedan was highest in the amount of < sup > 7 </ sup > Be, < sup > 54 </ sup > Mn, < sup > 106 </ sup > Ru and < sup > 242 </ sup > Cm, and second highest in the amount of deposited < sup > 127m </ sup > Te.

DVD sales brought in $ 296, 043, 871 in revenue marking the best-selling DVD of 2007, although it ranks second in terms of units sold ( 14, 496, 242 ) behind Transformers.

The second largest surviving volcanic crater in the world, the Menengai Crater is 2, 242 meters above sea level at its highest point.

Terwilliger spent the 1950 season as the Cubs ' starting second baseman, hitting. 242 with 10 home runs, 32 RBI, and 13 stolen bases.

In the NEw Year's match against New South Wales, Burge made an unbeaten 242 in the second innings to overturn a 212-run first innings deficit and set a target of 306, but his team were unable to finish off the match, ending one wicket short of victory when time ran out.