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Longer titles found: Half-Life: Alyx (view), Half-Life: Blue Shift (view), Half-Life: C.A.G.E.D. (view), Half-Life: Decay (view), Half-Life: Echoes (view), Half-Life: Escape from City 17 (view), Half-Life: Opposing Force (view), Half-Life (Krach novel) (view), Half-Life (film) (view), Half-Life (series) (view), Half-Life (video game) (view), Half-Life 2 (view), Half-Life 2: Capture the Flag (view), Half-Life 2: Deathmatch (view), Half-Life 2: Episode One (view), Half-Life 2: Episode Two (view), Half-Life 2: Lost Coast (view), Half-Life E.P. (view), Half-Life VR but the AI is Self-Aware (view), Biological half-life (view), Combine (Half-Life) (view), Locations of Half-Life (view), Half-life (disambiguation) (view), Characters of Half-Life (view), Unreleased Half-Life games (view), G-Man (Half-Life) (view), List of radioactive nuclides by half-life (view)

searching for Half-Life 326 found (5214 total)

alternate case: half-Life

Analgesic (5,853 words) [view diff] case mismatch in snippet view article find links to article

Davies NM (June 1998). "Clinical pharmacokinetics of lornoxicam. A short half-life oxicam". Clinical Pharmacokinetics. 34 (6): 421–8. doi:10.2165/00003088-199834060-00001
Radioactive decay (10,332 words) [view diff] case mismatch in snippet view article find links to article
atoms, the overall decay rate can be expressed as a decay constant or as half-life. The half-lives of radioactive atoms have a huge range; from nearly instantaneous
Impact factor (6,085 words) [view diff] case mismatch in snippet view article find links to article
include: Cited half-life: the median age of the articles that were cited in Journal Citation Reports each year. For example, if a journal's half-life in 2005
Francium (3,465 words) [view diff] case mismatch in snippet view article find links to article
called actinium K after the natural decay chain it appears in), has a half-life of only 22 minutes. It is the second-most electropositive element, behind
Einsteinium (7,415 words) [view diff] case mismatch in snippet view article find links to article
hydrogen bomb explosion in 1952. Its most common isotope einsteinium-253 (half-life 20.47 days) is produced artificially from decay of californium-253 in
Proton decay (2,328 words) [view diff] case mismatch in snippet view article find links to article
has never been observed. If it does decay via a positron, the proton's half-life is constrained to be at least 1.67×1034 years. According to the Standard
Isotopes of oxygen (1,499 words) [view diff] case mismatch in snippet view article find links to article
15O with a half-life of 122.24 seconds, while the shortest-lived isotope is 12O with a half-life of 580(30)×10−24 seconds (the half-life of the unbound
Isotopes of carbon (1,333 words) [view diff] case mismatch in snippet view article find links to article
12C and 13C are stable. The longest-lived radioisotope is 14C, with a half-life of 5,730 years. This is also the only carbon radioisotope found in nature—trace
Isotopes of thorium (4,404 words) [view diff] case mismatch in snippet view article find links to article
but none are stable. One isotope, 232Th, is relatively stable, with a half-life of 1.405×1010 years, considerably longer than the age of the Earth, and
Isotopes of argon (973 words) [view diff] case mismatch in snippet view article find links to article
radioactive isotopes are 39Ar with a half-life of 269 years, 42Ar with a half-life of 32.9 years, and 37Ar with a half-life of 35.04 days. All other isotopes
Mendelevium (4,042 words) [view diff] case mismatch in snippet view article find links to article
known, the most stable being 258Md with a half-life of 51 days; nevertheless, the shorter-lived 256Md (half-life 1.17 hours) is most commonly used in chemistry
Isotopes of xenon (1,672 words) [view diff] case mismatch in snippet view article find links to article
has been observed in 124Xe (half-life 1.8 ± 0.5(stat) ± 0.1(sys) ×1022 years) and double beta decay in 136Xe (half-life 2.165 ± 0.016(stat) ± 0.059(sys)
Bismuth (6,953 words) [view diff] case mismatch in snippet view article find links to article
alpha decay with a half-life more than a billion times the estimated age of the universe. Because of its tremendously long half-life, bismuth may still
Isotopes of nitrogen (820 words) [view diff] case mismatch in snippet view article find links to article
radioisotopes are short-lived, the longest-lived being nitrogen-13 with a half-life of 9.965 minutes. All of the others have half-lives below 7.15 seconds
Isotopes of iodine (2,898 words) [view diff] case mismatch in snippet view article find links to article
monoisotopic element. Its longest-lived radioactive isotope, 129I, has a half-life of 15.7 million years, which is far too short for it to exist as a primordial
Californium (4,495 words) [view diff] case mismatch in snippet view article find links to article
twenty known isotopes is californium-251, which has a half-life of 898 years. This short half-life means the element is not found in significant quantities
Isotopes of ruthenium (776 words) [view diff] case mismatch in snippet view article find links to article
most stable are 106Ru, with a half-life of 373.59 days; 103Ru, with a half-life of 39.26 days and 97Ru, with a half-life of 2.9 days. Twenty-four other
Isotopes of uranium (2,374 words) [view diff] case mismatch in snippet view article find links to article
radioisotopes), and the most abundant and stable is uranium-238, with a half-life of 4.4683×109 years (close to the age of the Earth). Uranium-238 is an
Isotopes of polonium (535 words) [view diff] case mismatch in snippet view article find links to article
a half-life of 138.376 days has the longest half-life of naturally occurring polonium. 209Po, with a half-life of 125.2 years, has the longest half-life
Isotopes of selenium (565 words) [view diff] case mismatch in snippet view article find links to article
half-life 327,000 years, 75Se with a half-life of 120 days, and 72Se with a half-life of 8.40 days. Of the other isotopes, 73Se has the longest half-life
Isotopes of neptunium (1,990 words) [view diff] case mismatch in snippet view article find links to article
stable being 237 Np with a half-life of 2.14 million years, 236 Np with a half-life of 154,000 years, and 235 Np with a half-life of 396.1 days. All of the
Isotopes of sodium (656 words) [view diff] case mismatch in snippet view article find links to article
Sodium has two radioactive cosmogenic isotopes (22 Na, half-life = 2.605 years; and 24 Na, half-life ≈ 15 hours). With the exception of those two, all other
Nuclear isomer (3,258 words) [view diff] case mismatch in snippet view article find links to article
× 10−9 seconds to distinguish the metastable half life from the normal "prompt" gamma-emission half-life. Occasionally the half-lives are far longer than
Isotopes of rhenium (528 words) [view diff] case mismatch in snippet view article find links to article
are 183Re with a half-life of 70 days, 184Re with a half-life of 38 days, 186Re with a half-life of 3.7186 days, 182Re with a half-life of 64.0 hours, and
Isotopes of technetium (1,396 words) [view diff] case mismatch in snippet view article find links to article
the exceptions are 93Tc (half-life: 2.75 hours), 94Tc (half-life: 4.883 hours), 95Tc (half-life: 20 hours), and 96Tc (half-life: 4.28 days). Technetium
Isotopes of lead (1,451 words) [view diff] case mismatch in snippet view article find links to article
half-life of 17.3 million years and 202Pb with a half-life of 52,500 years. A shorter-lived naturally occurring radioisotope, 210Pb with a half-life of
Isotopes of lithium (2,393 words) [view diff] case mismatch in snippet view article find links to article
lithium-8, which has a half-life of just 839.4 milliseconds. Lithium-9 has a half-life of 178.3 milliseconds, and lithium-11 has a half-life of about 8.75 milliseconds
Decay chain (3,058 words) [view diff] case mismatch in snippet view article find links to article
present in direct proportion to its half-life; but since its activity is inversely proportional to its half-life, each nuclide in the decay chain finally
Isotopes of protactinium (1,437 words) [view diff] case mismatch in snippet view article find links to article
most stable being 231Pa with a half-life of 32,760 years, 233Pa with a half-life of 26.967 days, and 230Pa with a half-life of 17.4 days. All of the remaining
Protactinium (5,331 words) [view diff] case mismatch in snippet view article find links to article
Fajans and Oswald Helmuth Göhring and named brevium because of the short half-life of the specific isotope studied, i.e. protactinium-234. A more stable
Isotopes of bismuth (693 words) [view diff] case mismatch in snippet view article find links to article
radioisotopes are 210mBi with a half-life of 3.04 million years, 208Bi with a half-life of 368,000 years and 207Bi, with a half-life of 32.9 years, none of which
Isotopes of iron (1,281 words) [view diff] case mismatch in snippet view article find links to article
of four stable isotopes: 5.845% of 54Fe (possibly radioactive with a half-life over 4.4×1020 years), 91.754% of 56Fe, 2.119% of 57Fe and 0.286% of 58Fe
Radon (12,184 words) [view diff] case mismatch in snippet view article find links to article
immediate decay product of radium. Its most stable isotope, 222Rn, has a half-life of only 3.8 days, making it one of the rarest elements. Since thorium
Isotopes of europium (850 words) [view diff] case mismatch in snippet view article find links to article
150Eu with a half-life of 36.9 years, 152Eu with a half-life of 13.516 years, 154Eu with a half-life of 8.593 years, and 155Eu with a half-life of 4.7612
Isotopes of tantalum (952 words) [view diff] case mismatch in snippet view article find links to article
179Ta with a half-life of 1.82 years, 182Ta with a half-life of 114.43 days, 183Ta with a half-life of 5.1 days, and 177Ta with a half-life of 56.56 hours
Isotopes of calcium (633 words) [view diff] case mismatch in snippet view article find links to article
42Ca, 43Ca, 44Ca and 46Ca), plus one isotope (48Ca) with such a long half-life that for all practical purposes it can be considered stable. The most
Fissile material (1,614 words) [view diff] case mismatch in snippet view article find links to article
are usually short-lived (a notable exception is neptunium-236 with a half-life of 154,000 years) because they readily decay by beta-particle emission
Isotopes of beryllium (1,208 words) [view diff] case mismatch in snippet view article find links to article
of beryllium, the most stable are 10 Be with a half-life of 1.39 million years and 7 Be with a half-life of 53.22 days. All other radioisotopes have half-lives
Isotopes of rhodium (515 words) [view diff] case mismatch in snippet view article find links to article
radioisotopes are 101Rh with a half-life of 3.3 years, 102Rh with a half-life of 207 days, and 99Rh with a half-life of 16.1 days. Thirty other radioisotopes
Actinium (4,285 words) [view diff] case mismatch in snippet view article find links to article
with a half-life of 21.772 years, predominantly emitting beta and sometimes alpha particles, and 228Ac, which is beta active with a half-life of 6.15
Isotopes of palladium (1,084 words) [view diff] case mismatch in snippet view article find links to article
radioisotopes are 107Pd with a half-life of 6.5 million years, 103Pd with a half-life of 17 days, and 100Pd with a half-life of 3.63 days. Twenty-three other
Isotopes of curium (790 words) [view diff] case mismatch in snippet view article find links to article
longest-lived isotope is 247Cm, with a half-life of 15.6 million years – several orders of magnitude longer than the half-life of all known nuclei of elements
Isotopes of samarium (1,307 words) [view diff] no match in snippet view article find links to article
152Sm and 154Sm, and two extremely long-lived radioisotopes, 147Sm (half life: 1.06×1011 y) and 148Sm (7×1015 y), with 152Sm being the most abundant
Isotopes of cadmium (745 words) [view diff] case mismatch in snippet view article find links to article
isotopes are 113Cd (beta decay, half-life is 8.04 × 1015 years) and 116Cd (two-neutrino double beta decay, half-life is 2.8 × 1019 years). The other three
Lawrencium (6,542 words) [view diff] case mismatch in snippet view article find links to article
currently known; the most stable is 266Lr with a half-life of 11 hours, but the shorter-lived 260Lr (half-life 2.7 minutes) is most commonly used in chemistry
Isotopes of actinium (853 words) [view diff] case mismatch in snippet view article find links to article
stable isotopes are 227Ac with a half-life of 21.772 years, 225Ac with a half-life of 10.0 days, and 226Ac with a half-life of 29.37 hours. All other isotopes
Radiocarbon dating (13,542 words) [view diff] case mismatch in snippet view article find links to article
older a sample is, the less 14 C there is to be detected, and because the half-life of 14 C (the period of time after which half of a given sample will have
Duncan Sheik (2,477 words) [view diff] exact match in snippet view article find links to article
more modern-sounding album which included the singles, "On A High" and "Half-Life".[citation needed] After a four-year recording break, Sheik released White
Primordial nuclide (1,999 words) [view diff] case mismatch in snippet view article find links to article
Because the age of the Earth is 4.58×109 years (4.6 billion years), the half-life of the given nuclides must be greater than about 108 years (100 million
Isotopes of americium (1,318 words) [view diff] case mismatch in snippet view article find links to article
characterized, with the most stable being 243Am with a half-life of 7,370 years, and 241Am with a half-life of 432.2 years. All of the remaining radioactive
Isotopes of tungsten (666 words) [view diff] case mismatch in snippet view article find links to article
are 181W with a half-life of 121.2 days, 185W with a half-life of 75.1 days, 188W with a half-life of 69.4 days and 178W with a half-life of 21.6 days.
Isotopes of dysprosium (651 words) [view diff] case mismatch in snippet view article find links to article
stable being 154Dy with a half-life of 3.0 million years, 159Dy with a half-life of 144.4 days, and 166Dy with a half-life of 81.6 hours. All of the remaining
Isotopes of tellurium (938 words) [view diff] case mismatch in snippet view article find links to article
is 121Te with a half-life of about 19 days. Several nuclear isomers have longer half-lives, the longest being 121mTe with a half-life of 154 days. The
Isotopes of silicon (349 words) [view diff] case mismatch in snippet view article find links to article
radioisotope is 32Si, which is produced by cosmic ray spallation of argon. Its half-life has been determined to be approximately 150 years (with decay energy 0
Isotopes of thallium (640 words) [view diff] case mismatch in snippet view article find links to article
half-life of 3.78 years. 207Tl, with a half-life of 4.77 minutes, has the longest half-life of naturally occurring radioisotopes. Thallium-202 (half-life
Isotopes of helium (1,992 words) [view diff] case mismatch in snippet view article find links to article
the longest-lived being 6 He with a half-life of 806.7 milliseconds. The least stable is 5 He , with a half-life of 7.6×10−22 s, although it is possible
Radionuclide (2,526 words) [view diff] case mismatch in snippet view article find links to article
collection of atoms of a single element the decay rate, and thus the half-life (t1/2) for that collection, can be calculated from their measured decay
Isotopes of rubidium (761 words) [view diff] case mismatch in snippet view article find links to article
enough to fog photographic film in approximately 30 to 60 days. 87Rb has a half-life of 4.92×1010 years. It readily substitutes for potassium in minerals,
Isotopes of gadolinium (866 words) [view diff] case mismatch in snippet view article find links to article
beta decay of 160Gd has never been observed; only a lower limit on its half-life of more than 1.3×1021 years has been set experimentally. Thirty radioisotopes
Astatine (9,046 words) [view diff] case mismatch in snippet view article find links to article
astatine's isotopes are short-lived; the most stable is astatine-210, with a half-life of 8.1 hours. A sample of the pure element has never been assembled, because
Isotopes of potassium (730 words) [view diff] case mismatch in snippet view article find links to article
positron emission. 40K has the longest known half life for any positron-emitter nuclide. The long half-life of this primordial radioisotope is caused by
Isotopes of fluorine (802 words) [view diff] case mismatch in snippet view article find links to article
numbers other than 19. The longest-lived radioisotope is 18F; it has a half-life of 109.739 minutes. All other fluorine isotopes have half-lives of less
Isotopes of scandium (540 words) [view diff] case mismatch in snippet view article find links to article
46Sc with a half-life of 83.8 days, 47Sc with a half-life of 3.35 days, and 48Sc with a half-life of 43.7 hours and 44Sc with a half-life of 3.97 hours
Isotopes of radium (673 words) [view diff] case mismatch in snippet view article find links to article
The longest lived, and most common, isotope of radium is 226Ra with a half-life of 1600 years. 226Ra occurs in the decay chain of 238U (often referred
Isotopes of potassium (730 words) [view diff] case mismatch in snippet view article find links to article
positron emission. 40K has the longest known half life for any positron-emitter nuclide. The long half-life of this primordial radioisotope is caused by
Radionuclide (2,526 words) [view diff] case mismatch in snippet view article find links to article
collection of atoms of a single element the decay rate, and thus the half-life (t1/2) for that collection, can be calculated from their measured decay
Isotopes of caesium (1,660 words) [view diff] case mismatch in snippet view article find links to article
radioisotopes are 135Cs with a half-life of 2.3 million years, 137Cs with a half-life of 30.1671 years and 134Cs with a half-life of 2.0652 years. All other
Isotopes of vanadium (531 words) [view diff] case mismatch in snippet view article find links to article
composed of one stable isotope 51V and one radioactive isotope 50V with a half-life of 1.5×1017 years. 24 artificial radioisotopes have been characterized
Isotopes of erbium (583 words) [view diff] case mismatch in snippet view article find links to article
169Er with a half-life of 9.4 days, 172Er with a half-life of 49.3 hours, 160Er with a half-life of 28.58 hours, 165Er with a half-life of 10.36 hours
Isotopes of niobium (721 words) [view diff] case mismatch in snippet view article find links to article
with a half-life of 34.7 million years. The next longest-lived niobium isotopes are 94Nb (half-life: 20,300 years) and 91Nb with a half-life of 680 years
Isotopes of berkelium (799 words) [view diff] case mismatch in snippet view article find links to article
239Bk), and 6 nuclear isomers. The longest-lived isotope is 247Bk with a half-life of 1,380 years. mBk – Excited nuclear isomer. ( ) – Uncertainty (1σ) is
Isotopes of cobalt (838 words) [view diff] case mismatch in snippet view article find links to article
60Co with a half-life of 5.2714 years, 57Co with a half-life of 271.8 days, 56Co with a half-life of 77.27 days, and 58Co with a half-life of 70.86 days
Isotopes of lanthanum (479 words) [view diff] case mismatch in snippet view article find links to article
stable being 138La, with a half-life of 1.02×1011 years; 137La, with a half-life of 60,000 years and 140La, with a half-life of 1.6781 days. The remaining
Isotopes of hafnium (464 words) [view diff] case mismatch in snippet view article find links to article
174Hf, with a half-life of 2×1015 years. In addition, there are 30 other known radionuclides, the most stable of which is 182Hf with a half-life of 8.9×106
Isotopes of gadolinium (866 words) [view diff] case mismatch in snippet view article find links to article
beta decay of 160Gd has never been observed; only a lower limit on its half-life of more than 1.3×1021 years has been set experimentally. Thirty radioisotopes
Isotopes of phosphorus (586 words) [view diff] case mismatch in snippet view article find links to article
longest-lived radioactive isotopes are 33P with a half-life of 25.34 days and 32P with a half-life of 14.268 days. All others have half-lives of under
Isotopes of nickel (1,378 words) [view diff] case mismatch in snippet view article find links to article
most stable being 59 Ni with a half-life of 76,000 years, 63 Ni with a half-life of 100.1 years, and 56 Ni with a half-life of 6.077 days. All of the remaining
Fermium (3,820 words) [view diff] case mismatch in snippet view article find links to article
total of 19 isotopes are known, with 257Fm being the longest-lived with a half-life of 100.5 days. It was discovered in the debris of the first hydrogen bomb
Isotopes of nobelium (2,745 words) [view diff] case mismatch in snippet view article find links to article
longest-lived isotope is 259No with a half-life of 58 minutes. The longest-lived isomer is 251mNo with a half-life of 1.7 seconds. mNo – Excited nuclear
Isotopes of germanium (733 words) [view diff] case mismatch in snippet view article find links to article
76Ge is very slightly radioactive, decaying by double beta decay with a half-life of 1.78 × 1021 years (130 billion times the age of the universe). Stable
Isotopes of zirconium (1,251 words) [view diff] case mismatch in snippet view article find links to article
primordial nuclide that decays via double beta decay with an observed half-life of 2.0×1019 years; it can also undergo single beta decay, which is not
Radioactive tracer (2,340 words) [view diff] case mismatch in snippet view article find links to article
with a half-life of ca. 20 min. 11C is one of the isotopes often used in positron emission tomography. 14C decays by beta decay, with a half-life of 5730
Bilirubin (3,515 words) [view diff] case mismatch in snippet view article find links to article
enterohepatic circulation to be re-excreted in the bile. Conjugated bilirubin's half-life is shorter than delta bilirubin. Although the terms direct and indirect
Isotopes of antimony (414 words) [view diff] case mismatch in snippet view article find links to article
of which are 125Sb, with a half-life of 2.75856 years; 124Sb, with a half-life of 60.2 days; and 126Sb, with a half-life of 12.35 days. All other isotopes
Isotopes of californium (1,043 words) [view diff] case mismatch in snippet view article find links to article
one nuclear isomer, 249mCf. The longest-lived isotope is 251Cf with a half-life of 898 years. mCf – Excited nuclear isomer. ( ) – Uncertainty (1σ) is
Isotopes of osmium (1,379 words) [view diff] case mismatch in snippet view article find links to article
extremely long half-life (2×1015 years) and for practical purposes can be considered to be stable as well. 187Os is the daughter of 187Re (half-life 4.56×1010
Radium (6,764 words) [view diff] case mismatch in snippet view article find links to article
radioactive, with the most stable isotope being radium-226, which has a half-life of 1600 years and decays into radon gas (specifically the isotope radon-222)
Isotopes of astatine (1,170 words) [view diff] case mismatch in snippet view article find links to article
210At, which has a half-life of 8.1 hours; the longest-lived isotope existing in naturally occurring decay chains is 219At with a half-life of 56 seconds.
Isotopes of magnesium (260 words) [view diff] case mismatch in snippet view article find links to article
ranging from 19Mg to 40Mg. The longest-lived radioisotope is 28Mg with a half-life of 20.915 hours. The lighter isotopes mostly decay to isotopes of sodium
Rhodium (3,702 words) [view diff] case mismatch in snippet view article find links to article
101Rh with a half-life of 3.3 years, 102Rh with a half-life of 207 days, 102mRh with a half-life of 2.9 years, and 99Rh with a half-life of 16.1 days
Isotopes of chromium (674 words) [view diff] case mismatch in snippet view article find links to article
natural abundance). 50Cr is suspected of decaying by β+β+ to 50Ti with a half-life of (more than) 1.8×1017 years. Twenty-two radioisotopes, all of which
Uranium-235 (1,126 words) [view diff] case mismatch in snippet view article find links to article
isotope that exists in nature as a primordial nuclide. Uranium-235 has a half-life of 703.8 million years. It was discovered in 1935 by Arthur Jeffrey Dempster
Isotopes of chlorine (598 words) [view diff] case mismatch in snippet view article find links to article
of 35.45. The longest-lived radioactive isotope is 36Cl, which has a half-life of 301,000 years. All other isotopes have half-lives under 1 hour, many
Isotopes of zinc (579 words) [view diff] case mismatch in snippet view article find links to article
with the most abundant and stable being 65Zn with a half-life of 244.26 days, and 72Zn with a half-life of 46.5 hours. All of the remaining radioactive isotopes
Bohrium (5,328 words) [view diff] case mismatch in snippet view article find links to article
known isotope is 270Bh with a half-life of approximately 61 seconds, though the unconfirmed 278Bh may have a longer half-life of about 690 seconds. In the
Isotopes of sulfur (557 words) [view diff] case mismatch in snippet view article find links to article
half-life of 87 days. The next longest-lived radioisotope is sulfur-38, with a half-life of 170 minutes. The shortest-lived is 49S, with a half-life shorter
Link rot (1,703 words) [view diff] case mismatch in snippet view article find links to article
the Web, about one link out of every 200 broke each week, suggesting a half-life of 138 weeks. This rate was largely confirmed by a 2016–2017 study of
Isotopes of silver (631 words) [view diff] case mismatch in snippet view article find links to article
most stable being 105Ag with a half-life of 41.29 days, 111Ag with a half-life of 7.45 days, and 112Ag with a half-life of 3.13 hours. All of the remaining
Actinide (11,059 words) [view diff] case mismatch in snippet view article find links to article
a half-life of 10 days. Actinium-225 is less available than actinium-228, but is more promising in radiotracer applications. Actinium-227 (half-life 21
Isotopes of thulium (502 words) [view diff] case mismatch in snippet view article find links to article
171Tm with a half-life of 1.92 years, 170Tm with a half-life of 128.6 days, 168Tm with a half-life of 93.1 days, and 167Tm with a half-life of 9.25 days
Isotopes of neon (422 words) [view diff] case mismatch in snippet view article find links to article
is 24Ne with a half-life of 3.38 minutes. All others are under a minute, most under a second. The least stable is 15Ne with a half-life of 7.7×10−22 s
Isotopes of lutetium (671 words) [view diff] case mismatch in snippet view article find links to article
41% natural abundance) and one long-lived radioisotope, 176Lu with a half-life of 3.78 × 1010 years (2.59% natural abundance). Thirty-four radioisotopes
Isotopes of boron (533 words) [view diff] case mismatch in snippet view article find links to article
half-lives, the longest being that of 8B, with a half-life of only 770 milliseconds (ms) and 12B with a half-life of 20.2 ms. All other isotopes have half-lives
Isotopes of rutherfordium (3,648 words) [view diff] case mismatch in snippet view article find links to article
longest-lived isotope is 267Rf with a half-life of 2.5 hours, and the longest-lived isomer is 261mRf with a half-life of 81 seconds. mRf – Excited nuclear
Meitnerium (5,654 words) [view diff] case mismatch in snippet view article find links to article
isotope, meitnerium-278, has a half-life of 4.5 seconds, although the unconfirmed meitnerium-282 may have a longer half-life of 67 seconds. The GSI Helmholtz
Isotopes of cerium (509 words) [view diff] case mismatch in snippet view article find links to article
stable being 144Ce, with a half-life of 284.893 days; 139Ce, with a half-life of 137.640 days and 141Ce, with a half-life of 32.501 days. All of the remaining
Isotopes of platinum (480 words) [view diff] case mismatch in snippet view article find links to article
(half-life 6.50×1011 years) radioisotope (190Pt). There are also 34 known synthetic radioisotopes, the longest-lived of which is 193Pt with a half-life
Isotopes of yttrium (460 words) [view diff] case mismatch in snippet view article find links to article
The most stable radioisotopes are 88Y, which has a half-life of 106.6 days and 91Y with a half-life of 58.51 days. All the other isotopes have half-lives
Isotopes of strontium (873 words) [view diff] case mismatch in snippet view article find links to article
90Sr with a half-life of 28.9 years and 85Sr with a half-life of 64.853 days. Of importance are also strontium-89 (89Sr) with a half-life of 50.57 days
Isotopes of ytterbium (597 words) [view diff] case mismatch in snippet view article find links to article
most stable being 169Yb with a half-life of 32.026 days, 175Yb with a half-life of 4.185 days, and 166Yb with a half-life of 56.7 hours. All of the remaining
Darmstadtium (5,930 words) [view diff] case mismatch in snippet view article find links to article
synthetic element. The most stable known isotope, darmstadtium-281, has a half-life of approximately 12.7 seconds. Darmstadtium was first created in 1994
Lutetium (3,378 words) [view diff] case mismatch in snippet view article find links to article
stable such isotopes are lutetium-174 with a half-life of 3.31 years, and lutetium-173 with a half-life of 1.37 years. All of the remaining radioactive
Technetium (7,207 words) [view diff] case mismatch in snippet view article find links to article
extracted from nuclear fuel rods. Because no isotope of technetium has a half-life longer than 4.21 million years (technetium-97), the 1952 detection of
Isotopes of promethium (713 words) [view diff] case mismatch in snippet view article find links to article
most stable being 145Pm with a half-life of 17.7 years, 146Pm with a half-life of 5.53 years, and 147Pm with a half-life of 2.6234 years. All of the remaining
Population dynamics (2,334 words) [view diff] case mismatch in snippet view article find links to article
/ ln(λ) The half-life of a population is the time taken for the population to decline to half its size. We can calculate the half-life of a geometric
Uranium-238 (2,422 words) [view diff] case mismatch in snippet view article find links to article
uranium-238, which has a half-life of 1.41×1017 seconds (4.468×109 years, or 4.468 billion years). Due to its natural abundance and half-life relative to other
Isotopes of neodymium (592 words) [view diff] case mismatch in snippet view article find links to article
most stable being naturally occurring isotopes 144Nd (alpha decay, a half-life (t1/2) of 2.29×1015 years) and 150Nd (double beta decay, t1/2 of 7×1018
Isotopes of mendelevium (553 words) [view diff] case mismatch in snippet view article find links to article
longest-lived isotope is 258Md with a half-life of 51.3 days, and the longest-lived isomer is 258mMd with a half-life of 57 minutes. mMd – Excited nuclear
Isotopes of seaborgium (3,129 words) [view diff] case mismatch in snippet view article find links to article
isomers (261mSg and 263mSg). The longest-lived isotope is 269Sg with a half-life of 14 minutes. mSg – Excited nuclear isomer. ( ) – Uncertainty (1σ) is
Isotopes of lawrencium (1,882 words) [view diff] case mismatch in snippet view article find links to article
266Lr, and 1 isomer (253mLr). The longest-lived isotope is 266Lr with a half-life of 11 hours. mLr – Excited nuclear isomer. ( ) – Uncertainty (1σ) is given
Isotopes of krypton (891 words) [view diff] case mismatch in snippet view article find links to article
and one (78 Kr ) which is slightly radioactive with an extremely long half-life, plus traces of radioisotopes that are produced by cosmic rays in the
Isotopes of terbium (481 words) [view diff] case mismatch in snippet view article find links to article
most stable being 158Tb with a half-life of 180 years, 157Tb with a half-life of 71 years, and 160Tb with a half-life of 72.3 days. All of the remaining
Isotopes of iridium (885 words) [view diff] case mismatch in snippet view article find links to article
radioisotope being 192Ir with a half-life of 73.83 days, and many nuclear isomers, the most stable of which is 192m2Ir with a half-life of 241 years. All other
CNO cycle (2,388 words) [view diff] case mismatch in snippet view article find links to article
      +  1.95 MeV 13 7N       →  13 6C   +  e+   +  ν e  +  1.20 MeV (half-life of 9.965 minutes) 13 6C   +  1 1H   →  14 7N   +  γ       +  7.54 MeV
Carbon-14 (3,673 words) [view diff] case mismatch in snippet view article find links to article
and carbon-13 are both stable, while carbon-14 is unstable and has a half-life of 5,730 ± 40 years. Carbon-14 decays into nitrogen-14 through beta decay
Neptunium (13,240 words) [view diff] case mismatch in snippet view article find links to article
stable being 237Np with a half-life of 2.14 million years, 236Np with a half-life of 154,000 years, and 235Np with a half-life of 396.1 days. All of the
Roentgenium (5,714 words) [view diff] case mismatch in snippet view article find links to article
isotope, roentgenium-282, has a half-life of 100 seconds, although the unconfirmed roentgenium-286 may have a longer half-life of about 10.7 minutes. Roentgenium
Isotopes of fermium (545 words) [view diff] case mismatch in snippet view article find links to article
longest-lived isotope is 257Fm with a half-life of 100.5 days, and the longest-lived isomer is 250mFm with a half-life of 1.92 seconds. mFm – Excited nuclear
Berkelium (7,438 words) [view diff] case mismatch in snippet view article find links to article
low-energy electrons and thus is relatively safe to handle. It decays with a half-life of 330 days to californium-249, which is a strong emitter of ionizing
Isotopes of mercury (615 words) [view diff] case mismatch in snippet view article find links to article
The longest-lived radioisotopes are 194Hg with a half-life of 444 years, and 203Hg with a half-life of 46.612 days. Most of the remaining 40 radioisotopes
Isotopes of indium (534 words) [view diff] no match in snippet view article find links to article
measurably though weakly radioactive. Its spin-forbidden decay has a half life of 4.41×1014 years. The stable isotope 113In is only 4.3% of naturally
Zirconium (3,836 words) [view diff] case mismatch in snippet view article find links to article
beta decay (not observed experimentally) with a half-life of more than 1.10×1017 years. 96Zr has a half-life of 2.4×1019 years, and is the longest-lived radioisotope
Isotopes of darmstadtium (3,288 words) [view diff] case mismatch in snippet view article find links to article
gaps) and 2 or 3 known isomers. The longest-lived isotope is 281Ds with a half-life of 9.6 seconds. mDs – Excited nuclear isomer. ( ) – Uncertainty (1σ) is
Isotopes of hassium (4,800 words) [view diff] case mismatch in snippet view article find links to article
arises from the low number of measurements. The confidence interval of half-life of 269Hs corresponding to one standard deviation (the interval is ~68
Isotopes of holmium (403 words) [view diff] case mismatch in snippet view article find links to article
synthetic radioactive isotopes; the most stable one is 163Ho, with a half-life of 4,570 years. All other radioisotopes have half-lives not greater than
Uranium (10,732 words) [view diff] case mismatch in snippet view article find links to article
0050–0.0059%). Uranium decays slowly by emitting an alpha particle. The half-life of uranium-238 is about 4.47 billion years and that of uranium-235 is
Isotopes of gallium (621 words) [view diff] case mismatch in snippet view article find links to article
commercially important radioisotopes are gallium-67 and gallium-68. Gallium-67 (half-life 3.3 days) is a gamma-emitting isotope (the gamma emitted immediately after
Isotopes of arsenic (471 words) [view diff] case mismatch in snippet view article find links to article
a monoisotopic element. The longest-lived radioisotope is 73As has a half-life of 80 days. Arsenic has been proposed as a "salting" material for nuclear
Promethium (4,494 words) [view diff] case mismatch in snippet view article find links to article
promethium-145, which has a specific activity of 940 Ci/g (35 TBq/g) and a half-life of 17.7 years via electron capture. Because it has 84 neutrons (two more
Proteolysis (4,218 words) [view diff] case mismatch in snippet view article find links to article
prokaryotes and eukaryotes, the exposed N-terminal residue may determine the half-life of the protein according to the N-end rule. Proteins that are to be targeted
Radioisotope thermoelectric generator (6,549 words) [view diff] case mismatch in snippet view article find links to article
(power) of a given quantity is inversely proportional to half-life. An isotope with twice the half-life and the same energy per decay will release power at
Isotopes of bohrium (3,106 words) [view diff] case mismatch in snippet view article find links to article
longest-lived isotope is 270Bh with a half-life of 1 minute, although the unconfirmed 278Bh may have an even longer half-life of about 690 seconds. mBh – Excited
Isotopes of molybdenum (1,085 words) [view diff] case mismatch in snippet view article find links to article
least partly from trends from the Mass Surface (TMS). Bold half-life – nearly stable, half-life longer than age of universe. Modes of decay: Bold symbol
Long-lived fission product (1,905 words) [view diff] case mismatch in snippet view article find links to article
Long-lived fission products (LLFPs) are radioactive materials with a long half-life (more than 200,000 years) produced by nuclear fission of uranium and plutonium
Isotopes of praseodymium (488 words) [view diff] case mismatch in snippet view article find links to article
characterized with the most stable being 143Pr, with a half-life of 13.57 days and 142Pr, with a half-life of 19.12 hours. All of the remaining radioactive
Transuranium element (2,060 words) [view diff] case mismatch in snippet view article find links to article
plutonium later also discovered in nature. They are all radioactive, with a half-life much shorter than the age of the Earth, so any primordial atoms of these
Cobalt-60 (1,875 words) [view diff] case mismatch in snippet view article find links to article
Cobalt-60 (60Co) is a synthetic radioactive isotope of cobalt with a half-life of 5.2713 years. It is produced artificially in nuclear reactors. Deliberate
Alpha decay (2,474 words) [view diff] case mismatch in snippet view article find links to article
small variation around this energy, due to the heavy dependence of the half-life of this process on the energy produced. Because of their relatively large
Isotopes of copernicium (3,814 words) [view diff] case mismatch in snippet view article find links to article
(with one more unconfirmed); the longest-lived isotope is 285Cn with a half-life of 29 seconds. ( ) – Uncertainty (1σ) is given in concise form in parentheses
Spontaneous fission (1,000 words) [view diff] case mismatch in snippet view article find links to article
more. These are nuclides at least as heavy as thorium-232 – which have a half-life somewhat longer than the age of the universe. 232Th, 235U, and 238U are
Dubnium (7,550 words) [view diff] case mismatch in snippet view article find links to article
highly radioactive: the most stable known isotope, dubnium-268, has a half-life of about 28 hours. This greatly limits extended research on dubnium. Dubnium
Calcium (5,851 words) [view diff] case mismatch in snippet view article find links to article
and one isotope with a half-life so long that it can be considered stable for all practical purposes (48Ca, with a half-life of about 4.3 × 1019 years)
Methoxy polyethylene glycol-epoetin beta (638 words) [view diff] case mismatch in snippet view article find links to article
extended serum half-life. It has an in vivo half-life of around 135 hours (5.6 days) as compared to darbepoetin alfa which has a half life of around 21
Flerovium (11,068 words) [view diff] case mismatch in snippet view article find links to article
has a half-life of around 1.9 seconds, but it is possible that the unconfirmed flerovium-290 (with one extra neutron) may have a longer half-life of 19 seconds;
Erbium (2,631 words) [view diff] case mismatch in snippet view article find links to article
half-life of 9.4 d, 172 Er with a half-life of 49.3 h, 160 Er with a half-life of 28.58 h, 165 Er with a half-life of 10.36 h, and 171 Er with a half-life
Isotopes of tin (777 words) [view diff] case mismatch in snippet view article find links to article
and tin-132 (132Sn). The longest-lived radioisotope is 126Sn, with a half-life of 230,000 years. The other 28 radioisotopes have half-lives less than
TC-1827 (113 words) [view diff] no match in snippet view article find links to article
The pro-cognitive effects of TC-1827 last much longer than the short half life (0.2 - 1.0 hours) would suggest. Bohme, Georg Andrees (May 2004). "In
Sodium-cooled fast reactor (1,565 words) [view diff] case mismatch in snippet view article find links to article
neutrons. When it does absorb a neutron it produces sodium-24, which has a half-life of 15 hours and decays to magnesium-24, a stable isotope. There have been
Isotopes of einsteinium (405 words) [view diff] case mismatch in snippet view article find links to article
(250mEs, 254mEs, and 256mEs). The longest-lived isotope is 252Es with a half-life of 471.7 days, or around 1.293 years. mEs – Excited nuclear isomer. ( ) –
Isotopes of oganesson (1,554 words) [view diff] case mismatch in snippet view article find links to article
and only isotope to be synthesized was 294Og in 2002 and 2005; it has a half-life of 700 microseconds. ( ) – Uncertainty (1σ) is given in concise form in
Oganesson (9,195 words) [view diff] case mismatch in snippet view article find links to article
proposed. A half-life of 0.89 ms was calculated: 294 Og decays into 290 Lv by alpha decay. Since there were only three nuclei, the half-life derived from
Fosazepam (625 words) [view diff] case mismatch in snippet view article find links to article
active metabolite desmethyldiazepam which has a very long elimination half-life of about 3 days. Tolerance to the hypnotic effects of fosazepam starts
Classified (rapper) (1,699 words) [view diff] no match in snippet view article
in Milford Station, Nova Scotia. He started his own production label, Half Life Records, and released his first full-length LP called Time's Up, Kid in
Isotopes of bromine (388 words) [view diff] case mismatch in snippet view article find links to article
and 32 known radioisotopes, the most stable of which is 77Br, with a half-life of 57.036 hours. mBr – Excited nuclear isomer. ( ) – Uncertainty (1σ)
Natural uranium (392 words) [view diff] case mismatch in snippet view article find links to article
decays at a faster rate (half-life of 700 million years) compared to uranium-238, which decays extremely slowly (half-life of 4.5 billion years). Therefore
Isotopes of flerovium (4,732 words) [view diff] case mismatch in snippet view article find links to article
longest-lived isotope is 289Fl with a half-life of 1.9 seconds, but the unconfirmed 290Fl may have a longer half-life of 19 seconds. ( ) – Uncertainty (1σ)
Caesium (9,249 words) [view diff] case mismatch in snippet view article find links to article
electronics, and in chemistry. The radioactive isotope caesium-137 has a half-life of about 30 years and is used in medical applications, industrial gauges
Isotopes of meitnerium (2,205 words) [view diff] case mismatch in snippet view article find links to article
known isotopes is 278Mt with a half-life of 8 seconds. The unconfirmed heavier 282Mt appears to have an even longer half-life of 67 seconds. mMt – Excited
Thorium (14,836 words) [view diff] case mismatch in snippet view article find links to article
thorium isotopes are unstable. The most stable isotope, 232Th, has a half-life of 14.05 billion years, or about the age of the universe; it decays very
Copernicium (7,219 words) [view diff] case mismatch in snippet view article find links to article
in a laboratory. The most stable known isotope, copernicium-285, has a half-life of approximately 28 seconds. Copernicium was first created in 1996 by
Island of stability (8,278 words) [view diff] case mismatch in snippet view article find links to article
Estimates of the stability of the elements on the island are usually around a half-life of minutes or days; some estimates predict half-lives of millions of years
Moscovium (7,097 words) [view diff] case mismatch in snippet view article find links to article
radioactive element: its most stable known isotope, moscovium-290, has a half-life of only 0.65 seconds. In the periodic table, it is a p-block transactinide
Isotopes of gold (394 words) [view diff] case mismatch in snippet view article find links to article
197Au, and 36 radioisotopes, with 195Au being the most stable with a half-life of 186 days. Gold is currently considered the heaviest monoisotopic element
Isotopes of moscovium (1,104 words) [view diff] case mismatch in snippet view article find links to article
radioisotopes from 287Mc to 290Mc. The longest-lived isotope is 290Mc with a half-life of 0.65 seconds. The isotopes undergo alpha decay into the corresponding
Americium (8,925 words) [view diff] case mismatch in snippet view article find links to article
of two neutrons. It decays by emission of a α-particle to 237Np; the half-life of this decay was first determined as 510±20 years but then corrected
Abciximab (620 words) [view diff] case mismatch in snippet view article find links to article
a glycoprotein IIb/IIIa inhibitor. While abciximab has a short plasma half-life, due to its strong affinity for its receptor on the platelets, it may
Telenzepine (190 words) [view diff] case mismatch in snippet view article find links to article
has a stereogenic C–N-axis. In neutral aqueous solution it displays a half-life for racemization of the order of 1000 years. The enantiomers have been
Plutonium-241 (569 words) [view diff] case mismatch in snippet view article find links to article
absorption, than isotopes with an even number of neutrons. 241Pu has a half-life of 14 years, corresponding to a decay of about 5% of 241Pu nuclei over
Uranium–lead dating (1,209 words) [view diff] case mismatch in snippet view article find links to article
series from 238U to 206Pb, with a half-life of 4.47 billion years and the actinium series from 235U to 207Pb, with a half-life of 710 million years. Uranium
Europium (4,920 words) [view diff] case mismatch in snippet view article find links to article
most stable being 150Eu with a half-life of 36.9 years, 152Eu with a half-life of 13.516 years, and 154Eu with a half-life of 8.593 years. All the remaining
Dysprosium (3,497 words) [view diff] case mismatch in snippet view article find links to article
with a half-life of approximately 3×106 years, followed by 159Dy with a half-life of 144.4 days. The least stable is 138Dy, with a half-life of 200 ms
Krypton (2,765 words) [view diff] case mismatch in snippet view article find links to article
with such a long half-life (9.2×1021 years) that it can be considered stable. (This isotope has the second-longest known half-life among all isotopes
Uranium-233 (1,922 words) [view diff] case mismatch in snippet view article find links to article
which has a half-life of only 22 minutes. Thorium-233 decays into protactinium-233 through beta decay. Protactinium-233 has a half-life of 27 days and
Radioactive contamination (4,069 words) [view diff] case mismatch in snippet view article find links to article
counter. In the case of low-level contamination by isotopes with a short half-life, the best course of action may be to simply allow the material to naturally
Benzodiazepine (16,025 words) [view diff] case mismatch in snippet view article find links to article
Desmethyldiazepam has a half-life of 36–200 hours, and flurazepam, with the main active metabolite of desalkylflurazepam, with a half-life of 40–250 hours. These
Tungsten (7,664 words) [view diff] case mismatch in snippet view article find links to article
are 181W with a half-life of 121.2 days, 185W with a half-life of 75.1 days, 188W with a half-life of 69.4 days, 178W with a half-life of 21.6 days, and
Isotopes of francium (391 words) [view diff] case mismatch in snippet view article find links to article
atomic weight cannot be given. Its most stable isotope is 223Fr with a half-life of 22 minutes, occurring in trace quantities as an intermediate decay
Isotopes of radon (501 words) [view diff] case mismatch in snippet view article find links to article
to 231Rn; all are radioactive. The most stable isotope is 222Rn with a half-life of 3.823 days, which decays into 218 Po . Five isotopes of radon, 217
Plutonium-239 (2,105 words) [view diff] case mismatch in snippet view article find links to article
reactors, along with uranium-235 and uranium-233. Plutonium-239 has a half-life of 24,110 years. The nuclear properties of plutonium-239, as well as the
Iodine-125 (1,709 words) [view diff] case mismatch in snippet view article find links to article
the second longest-lived radioisotope of iodine, after iodine-129. Its half-life is 59.49 days and it decays by electron capture to an excited state of
Technetium-99 (841 words) [view diff] case mismatch in snippet view article find links to article
Technetium-99 (99Tc) is an isotope of technetium which decays with a half-life of 211,000 years to stable ruthenium-99, emitting beta particles, but no
HIOC (369 words) [view diff] case mismatch in snippet view article find links to article
longer half-life (~30 min or less for NAS in rats, while HIOC is still detectable up to 24 hours after administration to mice; ~4 hour half-life for HIOC
Beta decay (6,831 words) [view diff] case mismatch in snippet view article find links to article
emission (β− decay) is the decay of carbon-14 into nitrogen-14 with a half-life of about 5,730 years: 14 6C → 14 7N + e− + ν e In this form of decay,
Fast-neutron reactor (4,690 words) [view diff] no match in snippet view article find links to article
fission products, strontium-90, which has a half life of 28.8 years, and caesium-137, which has a half life of 30.1 years, the result is to reduce nuclear
Fluorine-18 (662 words) [view diff] case mismatch in snippet view article find links to article
important source of positrons. It has a mass of 18.0009380(6) u and its half-life is 109.771(20) minutes. It decays by positron emission 97% of the time
Isotopes of roentgenium (2,326 words) [view diff] case mismatch in snippet view article find links to article
radioisotopes from 272Rg to 282Rg. The longest-lived isotope is 282Rg with a half-life of 2.1 minutes, although the unconfirmed 283Rg and 286Rg may have longer
Americium-241 (3,231 words) [view diff] case mismatch in snippet view article find links to article
americium. Like all isotopes of americium, it is radioactive, with a half-life of 432.2 years. 241Am is the most common isotope of americium as well
K–Ar dating (1,874 words) [view diff] case mismatch in snippet view article find links to article
amount of 40 Ar accumulated to the amount of 40 K remaining. The long half-life of 40 K allows the method to be used to calculate the absolute age of
Weapons-grade nuclear material (2,033 words) [view diff] case mismatch in snippet view article find links to article
isomer of Bk248 with a half-life greater than 9 [years]. No growth of Cf248 was detected, and a lower limit for the β− half-life can be set at about 104
Hydrogen astatide (324 words) [view diff] case mismatch in snippet view article find links to article
decomposition into elemental hydrogen and astatine, as well as the short half-life of the various isotopes of astatine. Because the atoms have a nearly equal
Nanosecond (452 words) [view diff] case mismatch in snippet view article find links to article
electronics. 0.001 nanoseconds – one picosecond 0.5 nanoseconds – the half-life of beryllium-13. 0.96 nanoseconds – 100 Gigabit Ethernet Interpacket gap
Triflubazam (188 words) [view diff] case mismatch in snippet view article find links to article
related to clobazam. It has sedative and anxiolytic effects, with a long half-life and duration of action. Benzodiazepine Clobazam CP-1414S Triflunordazepam
Nanosecond (452 words) [view diff] case mismatch in snippet view article find links to article
electronics. 0.001 nanoseconds – one picosecond 0.5 nanoseconds – the half-life of beryllium-13. 0.96 nanoseconds – 100 Gigabit Ethernet Interpacket gap
Seaborgium (6,195 words) [view diff] case mismatch in snippet view article find links to article
It is also radioactive; the most stable known isotope, 269Sg, has a half-life of approximately 14 minutes. In the periodic table of the elements, it
Iodine-131 (5,895 words) [view diff] case mismatch in snippet view article find links to article
at the University of California, Berkeley. It has a radioactive decay half-life of about eight days. It is associated with nuclear energy, medical diagnostic
Argon (4,556 words) [view diff] case mismatch in snippet view article find links to article
6%), 36 Ar (0.34%), and 38 Ar (0.06%). Naturally occurring 40 K, with a half-life of 1.25×109 years, decays to stable 40 Ar (11.2%) by electron capture
Radioluminescence (1,075 words) [view diff] case mismatch in snippet view article find links to article
safer to dispose of, compared to radium with its half life of 1600 years. However, this short half-life meant that the luminosity of promethium dials also
Hydrogen astatide (324 words) [view diff] case mismatch in snippet view article find links to article
decomposition into elemental hydrogen and astatine, as well as the short half-life of the various isotopes of astatine. Because the atoms have a nearly equal
Hadron (1,652 words) [view diff] case mismatch in snippet view article find links to article
decay (order of 1034+ years). Free neutrons are unstable and decay with a half-life of about 611 seconds. Their respective antiparticles are expected to follow
Isotopes of dubnium (3,140 words) [view diff] case mismatch in snippet view article find links to article
270Db, and 1–3 isomers. The longest-lived known isotope is 268Db with a half-life of 30 hours. mDb – Excited nuclear isomer. ( ) – Uncertainty (1σ) is given
Synthetic element (1,243 words) [view diff] case mismatch in snippet view article find links to article
isotopes synthesised were einsteinium-253, with a half-life of 20.5 days, and fermium-255, with a half-life of about 20 hours. The creation of mendelevium
Natural abundance (718 words) [view diff] case mismatch in snippet view article find links to article
atoms. This is because 238U is much more stable than 235U or 234U, as the half-life of each isotope reveals: 4.468 × 109 years for 238U compared with 7.038 × 108
Uranium-236 (1,228 words) [view diff] case mismatch in snippet view article find links to article
enriched natural uranium and then used once in an LWR). 240Pu decays with a half-life of 6561 years into 236U. In a closed nuclear fuel cycle, most 240Pu will
Tybamate (189 words) [view diff] case mismatch in snippet view article find links to article
or 4 times a day for a total daily dosage of 750 mg to 2 g. The plasma half-life of the drug is three hours. At high doses in combination with phenothiazines
Delanterone (159 words) [view diff] case mismatch in snippet view article find links to article
antiandrogen in vivo in animals, suggestive of low activity or a short terminal half-life, and likely in relation to this was not further developed. It was described
Ogilala (406 words) [view diff] exact match in snippet view article find links to article
"The Spaniards" 4:08 4. "Aeronaut" 3:40 5. "The Long Goodbye" 2:43 6. "Half-Life of an Autodidact" 3:27 7. "Amarinthe" 3:54 8. "Antietam" 3:16 9. "Mandarynne"
Isotopes of tennessine (1,059 words) [view diff] case mismatch in snippet view article find links to article
were 293Ts and 294Ts in 2009. The longer-lived isotope is 294Ts with a half-life of 51 ms. ( ) – Uncertainty (1σ) is given in concise form in parentheses
Group 5 element (1,644 words) [view diff] case mismatch in snippet view article find links to article
in laboratories, but it has not been found occurring in nature, with half-life of the most stable isotope, dubnium-268, being only 29 hours, and other
Nuclide (1,848 words) [view diff] case mismatch in snippet view article find links to article
nuclear isomer is the nuclide tantalum-180m (180m 73Ta ), which has a half-life in excess of 1,000 trillion years. This nuclide occurs primordially, and
Double beta decay (3,466 words) [view diff] case mismatch in snippet view article find links to article
when Edward L. Fireman made the first attempt to directly measure the half-life of the 124 Sn isotope with a Geiger counter. Radiometric experiments through
Edwin McMillan (3,342 words) [view diff] case mismatch in snippet view article find links to article
interesting and difficult to isolate due to its extraordinarily long half-life, about 1.39 million years. Following the discovery of nuclear fission
Palladium (5,182 words) [view diff] case mismatch in snippet view article find links to article
less than thirty minutes, except 101Pd (half-life: 8.47 hours), 109Pd (half-life: 13.7 hours), and 112Pd (half-life: 21 hours). For isotopes with atomic
Neutron poison (1,941 words) [view diff] case mismatch in snippet view article find links to article
while others remain relatively constant. The capture of neutrons by short half-life fission products is known as reactor poisoning; neutron capture by long-lived
Isotopes of livermorium (2,555 words) [view diff] case mismatch in snippet view article find links to article
longest-lived of the four well-characterised isotopes is 293Lv with a half-life of 53 ms. ( ) – Uncertainty (1σ) is given in concise form in parentheses
Table of nuclides (1,240 words) [view diff] case mismatch in snippet view article find links to article
indicating its half-life. Each color represents a certain range of length of half-life, and the color of the border indicates the half-life of its nuclear
Isotopes of nihonium (1,886 words) [view diff] case mismatch in snippet view article find links to article
unconfirmed 287Nh and 290Nh. The longest-lived isotope is 286Nh with a half-life of 8 seconds. ( ) – Uncertainty (1σ) is given in concise form in parentheses
Nihonium (12,489 words) [view diff] case mismatch in snippet view article find links to article
extremely radioactive; its most stable known isotope, nihonium-286, has a half-life of about 10 seconds. In the periodic table, nihonium is a transactinide
Medical Investigation (319 words) [view diff] no match in snippet view article find links to article
out what is causing the pregnant wives of military men to miscarry. 17 "Half Life" Roxann Dawson David Ehrman February 18, 2005 (2005-02-18) The NIH team
Carbon (10,486 words) [view diff] case mismatch in snippet view article find links to article
12C and 13C being stable, while 14C is a radionuclide, decaying with a half-life of about 5,730 years. Carbon is one of the few elements known since antiquity
Thulium (2,897 words) [view diff] case mismatch in snippet view article find links to article
very long half-life. The longest-lived radioisotopes are thulium-171, which has a half-life of 1.92 years, and thulium-170, which has a half-life of 128
Breeder reactor (7,765 words) [view diff] case mismatch in snippet view article find links to article
isomer of Bk248 with a half-life greater than 9 [years]. No growth of Cf248 was detected, and a lower limit for the β− half-life can be set at about 104
Doubling time (1,122 words) [view diff] case mismatch in snippet view article find links to article
exponential growth equation, and its converse for exponential decay is the half-life. For example, given Canada's net population growth of 0.9% in the year
Plutonium-238 (3,379 words) [view diff] case mismatch in snippet view article find links to article
Plutonium-238 (238Pu) is a radioactive isotope of plutonium that has a half-life of 87.7 years. Plutonium-238 is a very powerful alpha emitter; as alpha
Alpha-1 blocker (4,145 words) [view diff] case mismatch in snippet view article find links to article
half-life elimination rate is unchanged. therefore no dose adjustment is needed for low to moderate renal impairment. Delay in elimination half-life,
Pinazepam (378 words) [view diff] case mismatch in snippet view article find links to article
appropriate than other benzodiazepines for day time use. The elimination half-life is longer in the elderly. Benzodiazepine Schütz H, Holland EM, Kazemian-Erdmann
Lirequinil (309 words) [view diff] case mismatch in snippet view article find links to article
administration, and its O-desethyl metabolite Ro41-3290 is also active with a half-life of 8 hours. This meant that while effective as a hypnotic, lirequinil
Cytisine (946 words) [view diff] case mismatch in snippet view article find links to article
agonist of nicotinic acetylcholine receptors (nAChRs). Cytisine has a short half-life of 4.8 hours, and is rapidly eliminated from the body. The use of cytisine
Triclofos (130 words) [view diff] case mismatch in snippet view article find links to article
is metabolised in the liver into the active drug trichloroethanol. The half-life of triclofos is fairly long and it may cause drowsiness the next day.
3 (American band) (1,336 words) [view diff] no match in snippet view article
Metal Blade Records) The Ghost You Gave to Me (2011, Metal Blade Records) Half Life (2002, Planet Noise Records) These Iron Bones (2007, iTunes exclusive)
Period 6 element (6,417 words) [view diff] case mismatch in snippet view article find links to article
radioactive. For bismuth, however, its only primordial isotope, 209Bi, has a half-life of more than 1019 years, over a billion times longer than the current
Potassium-40 (849 words) [view diff] case mismatch in snippet view article find links to article
Potassium-40 (40K) is a radioactive isotope of potassium which has a long half-life of 1.251×109 years. It makes up 0.012% (120 ppm) of the total amount of
Landiolol (2,640 words) [view diff] case mismatch in snippet view article find links to article
comparison to other betablockers, landiolol has the shortest elimination half-life (3 to 4 minutes), ultra-rapid onset of effect (heart rate begins to decrease
Talampanel (381 words) [view diff] case mismatch in snippet view article find links to article
suspended due to its poor pharmacokinetic profile, namely a short terminal half-life (3 hours) that necessitated multiple doses per day. Luszczki, J. J. (2009)
Neutron (11,072 words) [view diff] case mismatch in snippet view article find links to article
although they have the longest half-life of any unstable subatomic particle by several orders of magnitude. Their half-life is still only about 10 minutes
Sodium (6,591 words) [view diff] case mismatch in snippet view article find links to article
ray spallation: 22Na has a half-life of 2.6 years and 24Na, a half-life of 15 hours; all other isotopes have a half-life of less than one minute. Two
Nuclear fallout (9,047 words) [view diff] case mismatch in snippet view article find links to article
a long half-life. The second, depending on the height of detonation, is a large quantity of radioactive dust and sand with a short half-life. All nuclear
Iodine (10,799 words) [view diff] case mismatch in snippet view article find links to article
longest-lived of the radioactive isotopes of iodine is iodine-129, which has a half-life of 15.7 million years, decaying via beta decay to stable xenon-129. Some
Terbium (3,055 words) [view diff] case mismatch in snippet view article find links to article
radioisotopes of terbium are terbium-158, with a half-life of 180 years, and terbium-157, with a half-life of 71 years. All of the remaining radioactive
Estrone glucuronide (364 words) [view diff] case mismatch in snippet view article find links to article
long-lasting reservoir of estradiol that effectively extends its terminal half-life of oral estradiol. In demonstration of the importance of first-pass metabolism
Brallobarbital (214 words) [view diff] case mismatch in snippet view article find links to article
150 mg secobarbital, 50 mg brallobarbital and 50 mg hydroxyzine. The long half-life of this combination of drugs tended to cause a hangover effect the next
Thyroglobulin (1,957 words) [view diff] case mismatch in snippet view article find links to article
thyroid gland recycling of the protein. Circulating thyroglobulin has a half-life of 65 hours. Following thyroidectomy, it may take many weeks before thyroglobulin
Rutherfordium (5,928 words) [view diff] case mismatch in snippet view article find links to article
laboratory. It is radioactive; the most stable known isotope, 267Rf, has a half-life of approximately 1.3 hours. In the periodic table of the elements, it
Dihydrotachysterol (100 words) [view diff] case mismatch in snippet view article find links to article
(cholecalciferol). DHT has a rapid onset of action (2 hours), a shorter half-life, and a greater effect on mineralization of bone salts than does vitamin
Hydromorphinol (350 words) [view diff] case mismatch in snippet view article find links to article
as potent as morphine and has a steeper dose-response curve and longer half-life. It is used in medicine as the bitartrate salt (free base conversion ratio
NEO (cryptocurrency) (607 words) [view diff] no match in snippet view article
unit 0.00000001. The inflation rate of GAS is controlled with a decaying half life algorithm that will release 100 million GAS over approximately 22 years
High-level radioactive waste management (8,053 words) [view diff] case mismatch in snippet view article find links to article
transuranic elements in spent fuel are neptunium-237 (half-life two million years) and plutonium-239 (half-life 24,000 years). Consequently, high-level radioactive
Plutonium-242 (616 words) [view diff] case mismatch in snippet view article find links to article
isotopes of plutonium, the second longest-lived, with a half-life of 375,000 years. The half-life of 242Pu is about 15 times longer than that of 239Pu;
Estradiol glucuronide (865 words) [view diff] case mismatch in snippet view article find links to article
long-lasting reservoir of estradiol that effectively extends its elimination half-life of oral estradiol. In demonstration of the importance of first-pass metabolism
Integral fast reactor (7,052 words) [view diff] case mismatch in snippet view article find links to article
dangers are roughly divided by an isotope's half-life. For example, Technetium-99's 213,000 year half-life combines with the IFR's 1/20 volume reduction
Sesamin (253 words) [view diff] no match in snippet view article find links to article
performed. Its major metabolite is enterolactone, which has an elimination half life of less than 6 hours. Sesamin and sesamolin are minor components of sesame
Barium (3,719 words) [view diff] case mismatch in snippet view article find links to article
slow radioactive decay to xenon-130 by double beta plus decay, with a half-life of (0.5–2.7)×1021 years (about 1011 times the age of the universe). Its
Technetium star (354 words) [view diff] case mismatch in snippet view article find links to article
metal technetium. The most stable isotope of technetium is 98Tc with a half-life of 4.2 million years, which is too short a time to allow the metal to
Nickel (9,447 words) [view diff] case mismatch in snippet view article find links to article
radionuclide 60 Fe, which decays with a half-life of 2.6 million years. Because 60 Fe has such a long half-life, its persistence in materials in the solar
Accelerator mass spectrometry (1,257 words) [view diff] case mismatch in snippet view article find links to article
the competing technique of decay counting for all isotopes where the half-life is long enough. Other advantages of AMS include its short measuring time
MK-2048 (285 words) [view diff] case mismatch in snippet view article find links to article
dissociation half-life of 32 hours on wild-type integrase—more than four times that of raltegravir",[full citation needed] and its dissociation half-life against
Yttrium (6,477 words) [view diff] case mismatch in snippet view article find links to article
stable of these is 106Y with a half-life of >150 ns (76Y has a half-life of >200 ns) and the most stable is 88Y with a half-life of 106.626 days. Apart from
Ampoule (1,181 words) [view diff] no match in snippet view article find links to article
Column 18 Noble Gasses save radon (mainly because it is radioactive with a half life less than half a week) and special thick-walled quartz and fluorite ampoules
Benoxaprofen (2,548 words) [view diff] case mismatch in snippet view article find links to article
The mean half-life of absorption was 0.4 hours. This means that within 25 minutes, half of the dose is absorbed in the system. The mean half-life of distribution
Radon difluoride (226 words) [view diff] case mismatch in snippet view article find links to article
the radioactivity of radon. The longest-lived isotope, radon-222, has a half-life of only 3.82 days, which decays by α-emission to yield polonium-218. When
Radioisotope rocket (652 words) [view diff] case mismatch in snippet view article find links to article
typically use fuels with a short half-life such as Po-210, as opposed to the typical RTG which would use a long half-life fuel such as plutonium in order
Manganese (8,885 words) [view diff] case mismatch in snippet view article find links to article
most stable are 53Mn with a half-life of 3.7 million years, 54Mn with a half-life of 312.2 days, and 52Mn with a half-life of 5.591 days. All of the remaining
2β-Propanoyl-3β-(2-naphthyl)-tropane (183 words) [view diff] case mismatch in snippet view article
phenyltropanes are highly potent MAT inhibitors and also have a very long half-life, spanning perhaps at least a few days. HDEP-28 HDMP-28 List of cocaine
Nairobi Half Life (865 words) [view diff] no match in snippet view article find links to article
Nairobi Half Life is a 2012 Kenyan drama film directed by David "Tosh" Gitonga. The film was selected as the Kenyan entry for the Best Foreign Language
Ubik (4,645 words) [view diff] case mismatch in snippet view article find links to article
Runciter, assisted by his deceased wife Ella who is kept in a state of "half-life", a form of cryonic suspension that allows the deceased limited consciousness
Stable nuclide (2,513 words) [view diff] case mismatch in snippet view article find links to article
sufficiently long half-lives (also known) to occur primordially. If the half-life of a nuclide is comparable to, or greater than, the Earth's age (4.5 billion
Radiogenic nuclide (1,024 words) [view diff] case mismatch in snippet view article find links to article
used in geology, in order of decreasing half-life of the radioactive parent isotope. The values given for half-life and decay constant are the current consensus
Electron capture (1,225 words) [view diff] case mismatch in snippet view article find links to article
2013-12-26. Wang, B.; et al. (2006). "Change of the 7Be electron capture half-life in metallic environments". The European Physical Journal A. 28: 375–377
Protein catabolism (1,462 words) [view diff] case mismatch in snippet view article find links to article
has. Proteins have different half-lives: some have an incredibly short half-life while others have longer ones. Those with short half-lives are primarily
Ytterbium (4,864 words) [view diff] case mismatch in snippet view article find links to article
stable ones being 169Yb with a half-life of 32.0 days, 175Yb with a half-life of 4.18 days, and 166Yb with a half-life of 56.7 hours. All of the remaining
Radioactive source (924 words) [view diff] case mismatch in snippet view article find links to article
character of the radiation they emit, intensity of emission, and the half-life of their decay. Common source radionuclides include cobalt-60, iridium-192
Selenium (9,703 words) [view diff] case mismatch in snippet view article find links to article
from 64Se to 95Se; the most stable are 75Se with a half-life of 119.78 days and 72Se with a half-life of 8.4 days. Isotopes lighter than the stable isotopes
Luteinizing hormone (3,122 words) [view diff] case mismatch in snippet view article find links to article
biologic half-life of LH is 20 minutes, shorter than that of FSH (3–4 hours) and hCG (24 hours).[citation needed] The biological half-life of LH is 23
Uranium-234 (641 words) [view diff] case mismatch in snippet view article find links to article
up only 0.0055% (55 parts per million) of the raw uranium because its half-life of just 245,500 years is only about 1/18,000 as long as that of 238U.
Beryllium-10 (603 words) [view diff] case mismatch in snippet view article find links to article
mainly by cosmic ray spallation of nitrogen and oxygen. Beryllium-10 has a half-life of 1.39 × 106 years, and decays by beta decay to stable boron-10 with
Otto Hahn (13,890 words) [view diff] no match in snippet view article find links to article
of a radioactive substance with a half life of between 6 and 7 hours. There was one isotope known to have a half life of 6.2 hours, mesothorium II (actinium-228)
Ruthenium (6,177 words) [view diff] case mismatch in snippet view article find links to article
the most stable are 106Ru with a half-life of 373.59 days, 103Ru with a half-life of 39.26 days and 97Ru with a half-life of 2.9 days. Fifteen other radioisotopes
Budiodarone (942 words) [view diff] case mismatch in snippet view article find links to article
benzofuran moiety. This side chain allows for budiodarone to have a shorter half-life in the body than amiodarone (7 hours versus 35–68 days) which allows it
List of Kenyan films (292 words) [view diff] no match in snippet view article find links to article
Sun (1952) Mo & Me (2006) Mzima: Portrait of a Spring (1972) Nairobi Half Life (2012) Nangos (2009) The Oath Film (2005) Our Strength (2012) Path of
Gadolinium (4,932 words) [view diff] case mismatch in snippet view article find links to article
being 152Gd (naturally occurring), with a half-life of about 1.08×1014 years, and 150Gd, with a half-life of 1.79×106 years. All of the remaining radioactive
Beryllium (8,853 words) [view diff] case mismatch in snippet view article find links to article
7Be (half-life 53 days) is also cosmogenic, and shows an atmospheric abundance linked to sunspots, much like 10Be. 8Be has a very short half-life of about
Phosphorus-32 (1,044 words) [view diff] case mismatch in snippet view article find links to article
Phosphorus-32 only exists in small quantities on Earth as it has a short half-life of 14 days and so decays rapidly. Phosphorus is found in many organic
CJC-1295 (820 words) [view diff] case mismatch in snippet view article find links to article
the half-life and bioavailability of growth-hormone-releasing hormone 1-29 and stimulate insulin-like growth factor 1 secretion. It increases the half-life
Hassium (12,431 words) [view diff] case mismatch in snippet view article find links to article
fission. This prediction is supported by the observed eleven-millisecond half-life of 277Hs and that of the neighbouring isobar 277Mt because the hindrance
Butyrylcholinesterase (2,062 words) [view diff] case mismatch in snippet view article find links to article
hypercholinesterasemia and hypocholinesterasemia indicate pathological processes. The half-life of BCHE is approximately 10 to 14 days. Butyrylcholine is a synthetic
Specific activity (1,493 words) [view diff] case mismatch in snippet view article find links to article
N=N_{0}e^{-\lambda t},} where N0 is the initial quantity of atoms at time t = 0. Half-life T1/2 is defined as the length of time for half of a given quantity of
Rebound effect (1,121 words) [view diff] no match in snippet view article find links to article
benzodiazepine receptors and long half life does not cause daytime anxiety rebound effects during treatment, showing that half life is very important for determining
First Cow (1,953 words) [view diff] no match in snippet view article find links to article
screenplay by Reichardt and Jonathan Raymond based on Raymond's novel The Half Life. It stars John Magaro, Orion Lee, Toby Jones, Ewen Bremner, Scott Shepherd
Alpha particle (3,142 words) [view diff] case mismatch in snippet view article find links to article
decay is mildly dependent on the half-life for the emission process, with many orders of magnitude differences in half-life being associated with energy changes
Rhenium (4,305 words) [view diff] case mismatch in snippet view article find links to article
only 37.4% 185Re, and 62.6% 187Re, which is unstable but has a very long half-life (≈1010 years). This lifetime can be greatly affected by the charge state
Radioactive iodine uptake test (432 words) [view diff] case mismatch in snippet view article find links to article
suggests the presence of a nodule.[citation needed] 123I has a shorter half-life than 131I (a half day vs. 8.1 days), so use of 123I exposes the body to
Macitentan (879 words) [view diff] case mismatch in snippet view article find links to article
muscle cells. Macitentan is taken as a 10 mg oral dose once a day. Its half-life in humans is about 16 hours and steady state is reached by the third day
Synthetic radioisotope (678 words) [view diff] case mismatch in snippet view article find links to article
positron emission tomography. Most synthetic radioisotopes have a short half-life. Though a health hazard, radioactive materials have many medical and industrial
Taltirelin (455 words) [view diff] case mismatch in snippet view article find links to article
which mimics the physiological actions of TRH, but with a much longer half-life and duration of effects, and little development of tolerance following
Glucagon-like peptide-1 (2,915 words) [view diff] case mismatch in snippet view article find links to article
neutral endopeptidase 24.11 (NEP 24.11) and renal clearance, resulting in a half-life of approximately 2 minutes. Consequently, only 10–15 % of GLP-1 reaches
S-40503 (572 words) [view diff] case mismatch in snippet view article find links to article
novel derivatives with similar bone anabolic effects, but longer in vivo half-life and better bioavailability. Selective androgen receptor modulators may
Cobalt (10,488 words) [view diff] case mismatch in snippet view article find links to article
60Co, has a half-life of 5.2714 years; 57Co has a half-life of 271.8 days; 56Co has a half-life of 77.27 days; and 58Co has a half-life of 70.86 days
GS-441524 (1,533 words) [view diff] case mismatch in snippet view article find links to article
main plasma metabolite of the antiviral prodrug remdesivir, and has a half-life of around 24 hours in human patients. Remdesivir and GS-441524 were both
JQ1 (551 words) [view diff] no match in snippet view article find links to article
not itself being used in human clinical trials because it has a short half life. Interest in JQ1 as a cancer therapeutic stemmed from its ability to inhibit
Thallium (5,670 words) [view diff] case mismatch in snippet view article find links to article
half-life of 3.78 years. It is made by the neutron activation of stable thallium in a nuclear reactor. The most useful radioisotope, 201Tl (half-life
Nitrogen-13 (280 words) [view diff] case mismatch in snippet view article find links to article
radioisotope of nitrogen used in positron emission tomography (PET). It has a half-life of a little under ten minutes, so it must be made at the PET site. A cyclotron
Persistent organic pollutant (4,086 words) [view diff] case mismatch in snippet view article find links to article
pink shrimp; it is a chemical that remains in the soil with a reported half-life of one year. Chlordane has been postulated to affect the human immune
List of religious ideas in science fiction (10,674 words) [view diff] case mismatch in snippet view article find links to article
"half-life" which allows for limited consciousness and the ability to communicate with both the living world and others in half-life.  (The half-life concept
Selenium-79 (606 words) [view diff] case mismatch in snippet view article find links to article
it is near the lower end of the mass range for fission products. Its half-life has been variously reported as 650,000 years, 65,000 years, 1.13 million
Independent Games Festival (1,537 words) [view diff] exact match in snippet view article find links to article
Warrior (Half-Life 2) Best Singleplayer FPS Mod ($500): Weekday Warrior (Half-Life 2) Best Multiplayer FPS Mod ($500): Eternal Silence (Half-Life 2) Best
Technetium-99m generator (1,257 words) [view diff] case mismatch in snippet view article find links to article
has a half-life of 66 hours and can be easily transported over long distances to hospitals where its decay product technetium-99m (with a half-life of only
PET-CT (1,018 words) [view diff] no match in snippet view article find links to article
PET imaging, which are usually extremely short-lived (for instance, the half life of radioactive Fluorine-18 (18F) used to trace glucose metabolism (using
Aldosterone (3,181 words) [view diff] case mismatch in snippet view article find links to article
is part of the renin–angiotensin–aldosterone system. It has a plasma half-life of less than 20 minutes. Drugs that interfere with the secretion or action
Cadmium (6,907 words) [view diff] case mismatch in snippet view article find links to article
radioactive isotopes are 113Cd (beta decay, half-life is 7.7×1015 y) and 116Cd (two-neutrino double beta decay, half-life is 2.9×1019 y). The other three are
Atom (12,789 words) [view diff] case mismatch in snippet view article find links to article
Also, only four naturally occurring, radioactive odd-odd nuclides have a half-life over a billion years: potassium-40, vanadium-50, lanthanum-138 and tantalum-180m
Zucapsaicin (1,644 words) [view diff] no match in snippet view article find links to article
exhalation following dermal administration. In rats, the elimination half life of zucapsaicin and its metabolites is approximately 7 to 11 hours. Most
Superboy and the Ravers (860 words) [view diff] exact match in snippet view article find links to article
confronted by a mysterious zombie-like teenager calling himself Half-Life. Half-Life is a 1950s teenager who was killed by an alien spaceship's wreck
Thyroid hormones (4,531 words) [view diff] case mismatch in snippet view article find links to article
of thyroid hormone in the blood is thyroxine (T4), which has a longer half-life than T3. In humans, the ratio of T4 to T3 released into the blood is approximately
Reteplase (167 words) [view diff] case mismatch in snippet view article find links to article
activator (alteplase), but the modifications give reteplase a longer half-life of 13–16 minutes. Reteplase also binds fibrin with lower affinity than
Prostaglandin H2 (480 words) [view diff] no match in snippet view article find links to article
to reduce PGG2 to PGH2. PGH2 is unstable at room temperature, with a half life of 90-100 seconds, so it is often converted into a different prostaglandin
Tedisamil (827 words) [view diff] case mismatch in snippet view article find links to article
efficiently in the atria. Tedisamil is administered intravenously and has a half-life of approximately 8 –13 hours in circulation. Tedisamil is being developed
Attosecond (546 words) [view diff] case mismatch in snippet view article find links to article
second-shortest pulses of laser light created 82 attoseconds (approximately): half-life of beryllium-8, maximum time available for the triple-alpha process for