The number of neutrons, N, is known as the neutron number of the atom ; thus, A = Z + N. Since protons and neutrons have approximately the same mass ( and the mass of the electrons is negligible for many purposes ), and the mass defect is usually very small compared to the mass, the atomic mass of an atom is roughly equal to A.

Since a coulomb is approximately equal to elementary charges ( such as electrons ), one ampere is approximately equivalent to elementary charges moving past a boundary in one second, or the reciprocal of the value of the elementary charges in coulombs.

Since 1891, the modern Japanese ' shaku ' is approximately equal to a foot ( 11. 93 inches ), calibrated with the meter to equal exactly 10 meters per 33 shaku ( 30. 30 cm ).

Since 1978 black membership has grown, and in 1997 there were approximately 500, 000 black members of the church ( about 5 % of the total membership ), mostly in Africa, Brazil and the Caribbean.

Since the 1950s, manga has steadily become a major part of the Japanese publishing industry, representing a ¥ 406 billion market in Japan in 2007 ( approximately $ 3. 6 billion ) and ¥ 420 billion ($ 5. 5 billion ) in 2009.

* The atomic mass unit ( u ) is defined so that a single carbon-12 atom has a mass of 12 u ; 1 u is approximately .< ref group =" note "> Since the Avogadro constant N < sub > A </ sub > is defined as the number of atoms in 12 g of carbon-12, it follows that 1 u is exactly 1 /( 10 < sup > 3 </ sup > N < sub > A </ sub >) kg .</ ref > The atomic mass unit is convenient for expressing the masses of atoms and molecules.

Since the large ribosomal subunit is 28S ( approximately 5kb ) and the small ribosomal subunit is 18S ( approximately 2kb ) two prominent bands will appear on the gel, the larger at close to twice the intensity of the smaller.

Since approximately 10, 000 BC Syria was one of the centers of Neolithic culture ( PPNA ), where agriculture and cattle breeding appeared for the first time in the world.

Since that fuel must itself be accelerated, this results in an approximately exponential increase in mass as a function of velocity change at non-relativistic speeds, asymptotically tending to infinity as it approaches the speed of light.

Since the pressure gradient normal to the flow within a boundary layer is approximately zero for low to moderate hypersonic Mach numbers, the increase of temperature through the boundary layer coincides with a decrease in density.

Since 2005 the paper has been printed in tabloid format, and approximately 28, 000 copies have been published.

Since 2006, natural growth has been positive, but the most important factor for the recent population of the Czech Republic has been immigration, approximately 300, 000 during the last decade.

Since the load resistance is large compared to the other resistances, the output voltage will be approximately:

Since approximately 1830, the Holladay House has served as a mercantile store, a residence, a doctor ’ s office, and a Virginia bed and breakfast inn.

Since the power dissipation, P = I < sup > 2 </ sup > R, increases with the square of the current but only increases approximately linearly with the number of windings, the power lost in the windings can be minimized by reducing I and increasing the number of turns N proportionally.

Since cotton could be shipped by rail, the cotton gin at Ceres was disassembled and moved approximately two miles to Musella.

Since approximately one-fourth of the U. S. peanut crop is produced nearby, with much of it being processed in the city, Dothan is called " The Peanut Capital of the World.

Since its incorporation in 1961, Bell Gardens has grown from a population of approximately 4, 000 to nearly 45, 000.

Since that time, Parks has remained approximately the same size.

Since La Plata's inception, it has grown into a town with a population of approximately 9, 500 people.

Since tire air pressure is approximately equal to average ground pressure, a typical car will have an average ground pressure of to.

Since 1971 Danderyd Municipality is reunified in approximately the old boundaries.

Since 1900, Taylors population growth has averaged approximately 128 new residents per year, based on an estimated population of 1100 in the year 1900, and the population in 2010 of 15191, according to the U. S. Census Bureau.

Since 30 June 2012 when the last leap second was added, TAI has been exactly 35 seconds ahead of UTC.

Since 1969, over 30, 000 tourists have been to Antarctica.

Since May 2006, the simulcast begins with the programme at 06: 00 until 08: 30 when programming on BBC News begins.

Since 30 June 2007, the island's governor has been Eustaquio Juan Santana Gil.

Since the working life of a hearse is generally one of light duty and short, sedate drives, hearses remain serviceable for a long time ; hearses 30 years old or more may still be in service, although some funeral homes replace them at least once a decade.

Since 1995, Hungary has pegged the forint against a basket of currencies ( in which the U. S. dollar is 30 %), and the central rate against the basket is devalued at a preannounced rate, originally set at 0. 8 % per month, the Forint is now an entirely free-floating currency.

Since the 17th century, the Roman Catholic ecclesiastic year has started on the first day of Advent, the Sunday nearest to St. Andrew's Day ( 30 November ).

Since it was put into use, the nuevo sol's exchange rate with the United States dollar has stayed mostly between 2. 80 and 3. 30 to 1.

Since there was no compromise coming from Henry V, it was determined on 30 October 1119 that the Emperor and his antipope should be solemnly excommunicated.

Since then, South Korea has advanced into a developed economy to eventually attain a GDP per capita of $ 30, 000 in 2010, almost thirteen times the figure thirty years ago.

Since the secession of South Sudan in July 2011, estimates place the current population of Sudan at a little over 30 million.

Since 1972, Versailles has been the seat of one of France's 30 nationwide académies ( districts ) of the Ministry of National Education.

Since the gaussian beam model uses the paraxial approximation, it fails when wavefronts are tilted by more than about 30 ° from the direction of propagation.

Since 1897, the municipal council has been elected by proportional voting and consists of 30 members and 15 alternate members.

Since then, the game series has branched out to include action games, and has sold 50 million units as of 30 June 2012.

Since 1999, the public health scheme has been supplemented by a Private Health Insurance Rebate, where the government funds at least 30 % of any private health insurance premium covering people eligible for Medicare.

Since the discovery of the Sweet Track, it has been determined that it was built along the route of an even earlier track, the Post Track, dating from 3838 BC and so 30 years older.

Since 9 / 11, TFRs have been routinely used to restrict airspace for 30 nautical miles around the President, with a radius no-fly zone for non-scheduled flights.

Since American Secretary of State John Hay suggested that the US $ 30 million plus Boxer indemnity paid to the United States was excessive, in 1909, President Roosevelt then obtained congressional approval to reduce the Qing Dynasty indemnity payment by US $ 10. 8 million, on the condition that the said fund was to be used as scholarship for Chinese students to study in the United States.

Since October 2010, programming on both night's schedules has been somewhat fluid as while all series have a permanent place on the Friday and Sunday primetime schedules, episode premieres of all Disney Channel original series are subject to being rotated on and off the schedule depending on the schedule for that given week as they usually air as part of a 90-minute block from 8 – 9: 30 p. m. ET / PT on Friday evenings and 7: 30 – 9 p. m. ET / PT on Sunday evenings.

The earliest microscopic signs of BPH usually begin between the age of 30 and 50 years old in the PUG, which are posterior to the proximal urethra .< sup >: 694 </ sup > However, the majority of growth eventually occurs in the TZ .< sup >: 694 </ sup > In addition to these two classic areas, the peripheral zone ( PZ ) of the prostate is also involved to a lesser extent .< sup >: 695 </ sup > Since prostatic cancer also occurs in the PZ, BPH nodules in the PZ are often biopsied to rule out cancer .< sup >: 695 </ sup >

" Since the county was founded almost 30 years before the U. S. Civil War, Union County obviously was not named in sympathy for the North, as is sometimes thought.