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.

Some synthetic radioactive isotopes are known ; the most stable one is holmium-163, with a half life of 4570 years.

Some produce isotopes for medical and industrial use, and some are run only for research.

Some columnar cactus also exhibit similar seasonal patterns in the isotopes of carbon and oxygen in their spines ( acanthochronology ).

Some of the isotopes have half-lives that are comparable to the time interval since their formation, and isotopic ratios can therefore carry some information about the amount of time that has passed since they were formed.

: Some particle accelerator-based neutron generators exist that work by inducing nuclear fusion between beams of deuterium and / or tritium ions and metal hydride targets which also contain these isotopes.

" Some of the isotopes, such as strontium 90 and cesium 137, would not have diminished much.

Some of the nuclei resulting from the fission are radioactive isotopes with short half-lives, and nuclear reactions among them release additional neutrons after a long delay of up to several minutes after the initial fission event.

Some reactors, such as the liquid metal and molten salt variants, use Thorium-232 fuel which is more abundant in nature than Uranium isotopes and requires no enrichment.

* Some studies seem to show that human beings and animals can distinguish between isotopes by smell, despite their identical shapes.

Some of the petroleum geochemical techniques used are: stable isotopes ; hydrocarbon analysis ( fingerprinting ) of specific organic compounds ( biological organic markers ) with gas chromatography ( GC ) and gas chromatography-mass spectrometry ( GC-MS ); maturity indicators like vitrinite reflectance ; laboratory pyrolysis and analysis ; kerogen typing ; and other more exotic techniques.

( Some lighter elements have isotopes with alpha decay as a rare branch )

Some painters have less interest in the experience of the moment, with its attendant urgencies and ambiguities, than in looking beyond the flux of particular impressions to a higher, more serene level of truth.

Some students from the University returned around six with a large pot containing enough hot soup to last me a week.

Some day we might see a Federation of Prison and Jail Inmates, with a leader busily trying to organize reformatory occupants, defendants out on bail, convicts opposed to probation officers, etc..

Some of the poetic cadence of the older version certainly is lost in the newer one, but almost anyone, with a fair knowledge of the English language, can understand the meaning, without the necessity of interpretation by a Biblical scholar.

Some of the most dramatic successes of Communism in winning local support can be traced to the identification -- correct or not -- of Communist regimes with personal honesty and pro-Western regimes with corruption.

Some 45 frequencies are assigned for use primarily by dominant Class 1, -- A or Class 1, -- B clear-channel stations, designed to operate with adequate power and to provide service -- both groundwave and ( at night ) skywave -- over large areas and at great distances, being protected against interference to the degree necessary to achieve this objective.

Some renditions are of symphonic dimensions, with the contrabass given free rein.

Some of them are obvious, such as the fact that we associate recorded and live music with our responses and behavior in different types of environments and social settings.

Some of the small vessels were filled with fibrin thrombi, and there was extensive interstitial hemorrhage.

Some of them were then covered with a drop of Af in a moist chamber at 24-degrees for 30 - 40 minutes.

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

Some 30,000 completed schedules with 20 items ( collected by sub-chiefs in 1,100 circumscriptions ) have been tabulated.

Some of those who did not initially react with an arm-elevation also associated their behavior in the situation with control factors -- an inability to relinquish control voluntarily.

Some who have written on Utopia have treated it as `` a learned diversion of a learned world '', `` a phantasy with which More amused himself '', `` a holiday work, a spontaneous overflow of intellectual high spirits, a revel of debate, paradox, comedy and invention ''.

Some retailing, of course, always spreads with the population -- grocery stores, drugstores, local haberdasheries and dress shops, candy stores and the like.

Some time later the missing part of the relic was found and the complete inscription, together with other new evidence, fully corroborated the ancient priest's information.

Some are blest with an abundance of good health -- some are in poor health and many are invalids.

Some people love to crack tile and it's amazing what beautiful designs they come up with as a result of their cracking good time.

Some such youngsters rarely smile, or they try to speak with the mouth closed.

Some of them are very delicious indeed, and there are many good ones exported -- unfortunately, along with others not so good, and worse.

Some are used in paints along with drying oils.

Some opposition to the home rule movement started to be heard yesterday, with spokesmen for the town's insurgent Democratic leadership speaking out against the home rule charter in favor of the model municipal league charter.

Some pastors have two sessions in one evening, with a refreshment period between.

Some are fishing, some driving the team, and many are sitting indolently on the banks of the river.

Some faculty members and many administrators oppose faculty review groups because they either repeat department's actions or act pro forma.

Some day, many years in the future, true spacecraft will be able to find and destroy mobile targets.

Some schools were technical -- the Belgians needed carpenters and mechanics to help exploit the land, and trained many.

Some alphabets disregard tone entirely, especially when it does not carry a heavy functional load, as in Somali and many other languages of Africa and the Americas.

Some researchers state that the evidence-based approach to defining CAM is problematic because some CAM is tested, and research suggests that many mainstream medical techniques lack solid evidence.

Some of his most important images were in editions of only 30 and many were described as rare in 1970.

Some protesters destroyed the windows of storefronts of businesses owned or franchised by targeted corporations such as a large Nike shop and many Starbucks windows.

Some see them as a " popular university ", an occasion to make many people aware of the problems of globalization.

Some of the many theoreticians that have written about the NDR include Joe Slovo, Joel Netshitenzhe, Tshilidzi Marwala.

Some Jains abstain from farming because it inevitably entails unintentional killing or injuring of many small animals, such as worms and insects, but agriculture is not forbidden in general and there are Jain farmers.

It was Laura Clifford Barney who, by asking questions of ` Abdu ' l-Bahá over many years and many visits to Haifa, compiled what later became the book Some Answered Questions.

Some bar associations are responsible for the regulation of the legal profession in their jurisdiction ; others are professional organizations dedicated to serving their members ; in many cases, they are both

Some birds, especially corvids and parrots, are among the most intelligent animal species ; a number of bird species have been observed manufacturing and using tools, and many social species exhibit cultural transmission of knowledge across generations.

Some even provided gateways, such as UFGATE, by which members could send / receive e-mail to / from the Internet via UUCP, and many FidoNet discussion groups were shared via Usenet.

Some bicycle parts, particularly hub-based gearing systems, are complex, and many cyclists prefer to leave maintenance and repairs to professional bicycle mechanics.

Some cafés use a non-dairy creamer milk substitute instead of milk because many East Asians are lactose intolerant and because it is cheaper and easier to store and use than perishable milk.

Some systems have proposed as many as 90 subspecies, while recent DNA analysis has identified as few as five clades.

Some of the B4-fitted Mark 2s, as well as many B4-fitted Mark 1 BGs were allowed to run at with extra maintenance, particularly of the wheel profile, and more frequent exams.

Some moved because of the rising cost of living throughout the Bay Area, and others because of the decline and disappearance of many industries in West Berkeley.

Some classic examples of these types of tasks are multimedia applications ( images, video, and sound ), as well as many types of scientific and engineering tasks.

" Some historians have put forward the idea that more recently the United States has become the home of conspiracy theories because so many high-level prominent conspiracies have been undertaken and uncovered since the 1960s.