This produced enough of the drug to begin testing on animals.

Indeed, complaining that painting did not make enough money to justify the time spent when compared to his prints, he produced no paintings from 1513 to 1516.

Some of these elements, notably thorium ( atomic number 90 ) and uranium ( atomic number 92 ), have one or more isotopes with half-lives long enough to survive as remnants of the explosive stellar nucleosynthesis that produced the heavy elements before the formation of our solar system.

Some of these elements, notably thorium ( atomic number 90 ) and uranium ( atomic number 92 ), have one or more isotopes with half-lives long enough to survive as remnants of the explosive stellar nucleosynthesis that produced the heavy elements before the formation of our Solar System.

It is an actinide element, the sixth transuranium element to be synthesized, and has the second-highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye ( after einsteinium ).

And it ’ s not enough to deconstruction to expose the way oppositions work and how meaning and values are produced in speech of all kinds and stop there in a nihilistic or cynic position regarding all meaning, " thereby preventing any means of intervening in the field effectively ".

Electromagnetic radiation is associated with EM fields that are far enough away from the moving charges that produced them, that absorption of the EM radiation no longer affects the behavior of these moving charges.

Since electrical energy cannot easily be stored in quantities large enough to meet demands on a national scale, at all times exactly as much must be produced as is required.

In some locations, enough natural gas was produced to be used as fuel for the salt evaporating pans.

The amount of crystallographic damage can be enough to completely amorphize the surface of the target: i. e. it can become an amorphous solid ( such a solid produced from a melt is called a glass ).

* Philby, Burgess and MacLean – Spy Scandal of the Century, a BBC drama produced for TV in 1977, covers the period of the late 1940s, when British intelligence investigated Kim Philby's colleague Donald Maclean until 1955 when the British government cleared Philby because it did not have enough evidence to convict him.

In this way each will give to society all that his strength permits until enough is produced for every one ; and each will take all that he needs, limiting his needs only in those things of which there is not yet plenty for every one.

Prior to that, his last produced play was The Tik-Tok Man of Oz ( based on Ozma of Oz and the basis for Tik-Tok of Oz ), a modest success in Hollywood that producer Oliver Morosco decided did not do well enough to take to Broadway.

Ironically, Bradman was bowled shortly thereafter at a memorial match by Grimmett, who produced a perfectly pitched stock ball that turned just enough to remove Bradman's off bail.

The Advanced Combat Rifle program in the 1980s produced weapons that were superior in some ways, but none improved upon the M16 series enough to replace it.

The series began as a mid-season replacement in spring of 1987, and did well enough to be renewed for the fall television season, but the viewer ratings could not be sustained, due perhaps to direct competition with CBS's Top 20 hit Dallas ( also produced by Lorimar ) and NBC's Top 30 hit Miami Vice.

However, this process cannot happen to a great extent in a nuclear reactor, as too small a fraction of the fission neutrons produced by any type of fission have enough energy to efficiently fission U-238 ( fission neutrons have a median energy of 2 MeV, but a mode of only 0. 75 MeV, meaning half of them have less than this insufficient energy ).

However, too few of the neutrons produced by < sup > 238 </ sup > U fission are energetic enough to induce further fissions in < sup > 238 </ sup > U, so no chain reaction is possible with this isotope.

Based on the amount of lava estimated to have been produced during this period, the worst-case scenario is an expulsion of enough carbon dioxide from the eruptions to raise world temperatures five degrees Celsius.

Accurate radiometric dating generally requires that the parent has a long enough half-life that it will be present in significant amounts at the time of measurement ( except as described below under " Dating with short-lived extinct radionuclides "), the half-life of the parent is accurately known, and enough of the daughter product is produced to be accurately measured and distinguished from the initial amount of the daughter present in the material.

The proton which is produced does not have enough energy to be detected easily.

Baird's scanning disk produced an image of 30 lines resolution, just enough to discern a human face, from a double spiral of Photographic lenses.

It also produced fluctuations in atmospheric pressure strong enough to be detected in Great Britain.

Because boron is produced entirely by cosmic ray spallation and not by stellar nucleosynthesis, it is a low-abundance element in both the solar system and the Earth's crust.

Industrially, very pure boron is produced with difficulty, as boron tends to form refractory materials containing small amounts of carbon or other elements.

Pure boron was arguably first produced by the American chemist Ezekiel Weintraub in 1909.

It can be produced by compressing other boron phases to 12 – 20 GPa and heating to 1500 – 1800 ° C ; it remains stable after releasing the temperature and pressure.

The chemical elements are thought to have been produced by various cosmic processes, including hydrogen, helium ( and smaller amounts of lithium, beryllium and boron ) created during the Big Bang and cosmic-ray spallation.

Even smaller amounts of boron may have been produced in the Big Bang, since it has been observed in some very old stars, while carbon has not.

It is generally agreed that no heavier elements than boron were produced in the Big Bang.

Helium-3 is also produced via beta decay of tritium, which in turn can be produced from deuterium, lithium, or boron.

( Traces of boron have been found in some old stars, giving rise to the question whether some boron, not really predicted by the theory, might have been produced in the Big Bang.

Most notably spallation is believed to be responsible for the generation of almost all of < sup > 3 </ sup > He and the elements lithium, beryllium and boron ( some and are thought to have been produced in the Big Bang ).

Beryllium and boron are not significantly produced in stellar fusion processes, because the instability of any < sup > 8 </ sup > Be formed from two < sup > 4 </ sup > He nuclei prevents simple 2-particle reaction building-up of these elements.

Cosmic rays continue to produce new elements on Earth by the same cosmogenic processes discussed above that produced primordial beryllium and boron.

However the quality of the tanks produced during this era varied widely ; if the boron carbide was not available in time to meet production quotas, the tank would be shipped with any filler that could be found, and sometimes nothing at all.

However, neutron-sensitive tubes can be produced which either have the inside of the tube coated with boron, or the tube contains boron trifluoride or helium-3 as the fill gas.

Commercially produced or researched ceramics for such type of armour include boron carbide, silicon carbide, aluminium oxide ( sapphire or " alumina "), aluminium nitride, titanium boride and Syndite, a synthetic diamond composite.

Removing all nitrogen from the process by adding aluminium or titanium produced colorless " white " stones, and removing the nitrogen and adding boron produced blue ones.

For trisubstituted alkenes such as 1, boron is predominantly placed on the less substituted carbon. The minor product, in which the boron atom is placed on the more substituted carbon, is usually produced in less than 10 %.

By convention, certain stable nuclides of lithium, beryllium, and boron thought to have been produced by cosmic ray spallation in the period of time between the Big Bang and the solar system's formation ( thus making these primordial nuclides, by definition ) are not termed " cosmogenic ," even though they are were formed by the same process as the cosmogenic nuclides ( although at an earlier time ).