These spaces are now known, respectively, to be the places of the radioactive synthetic elements technetium and promethium, and also the last two quite rare naturally-occurring stable elements hafnium ( discovered 1923 ) and rhenium ( discovered 1925 ).

These comprise the first 82 elements from hydrogen to lead, with the two exceptions, technetium ( element 43 ) and promethium ( element 61 ), that do not have any stable nuclides.

This period contains technetium, one of the two elements until lead that has no stable isotopes ( along with promethium ), as well as molybdenum and iodine, two of the heaviest elements with a known biological role, and Niobium has the largest magnetic known penetration depth of all the elements.

Promethium is one of the two elements with atomic number less than 83 that have only unstable isotopes ; the other is technetium.

But in our case -- and neither my wife nor I have extreme views on integration, nor are we given to emotional outbursts -- the situation has ruined one or two valued friendships and come close to wrecking several more.

The breakup of the Holy Roman Empire and the downfall of feudalism led, not more than two centuries ago, to the surge of nationalism.

We followed the asphalt road for a few miles and then swung off onto a smaller road which was nothing more than two tire marks on the earth.

Even two decades ago in Go Down, Moses Faulkner was looking to the more urban future with a glimmer of hope that through its youth and its new way of life the South might be reborn and the curse of slavery erased from its soil.

They differed in the balance they believed essential to the sovereignty of the citizen -- but the supreme sacrifice each made served to maintain a still more fundamental truth: That individual life, liberty and happiness depend on a right balance between the two -- and on the limitation of sovereignty, in all its aspects, which this involves.

Of these there are surely few that would be more rewarding discoveries than Verner Von Heidenstam, the Swedish poet and novelist who received the award in 1916 and whose centennial was celebrated two years ago.

With that act of Parliament the opponents of the stage won the day, and for more than two decades after that England had no legitimate public drama.

The turn of the century, or to be more precise, the two decades preceeding and following it, marks a great change in the history of early English scholarship.

Lewis was spending his mornings, with the help of two secretaries, on the galleys of that long novel, making considerable revisions, and the combination of hard work and hard frivolity exhausted him once more, so that he was compelled to spend three days in the Harbor Sanatorium in the last week of January.

To the newspapers he talked about his unquiet life, about his wish to be a newspaperman once more, about the prevalence of American slang in British speech, about the loquacity of the English and the impossibility of finding quiet in a railway carriage, about his plans to wander for two years `` unless stopped and made to write another book ''.

He was going to do one or two more films for cash and then chuck it all, leave Rome and its intellectual cliques and money-fed life, go back to Calabria.

Of course, some of the credit for the sale boost must be given to improvement in the weather and to the fact that Easter comes more than two weeks earlier than in 1960.

He said he had No. 2's enough to last two weeks more.

Desegregation is beginning in two more important Southern cities -- Dallas and Atlanta.

There's more specialization and a narrower purpose in two albums recently issued by Dover Publications.

and President Kennedy indicated there were one or two more than those reported.

there might even be two or more candidates for voters to choose from.

I put a lot more trust in my two legs than in the gun, because the most important thing I had learned about war was that you could run away and survive to talk about it.

The two in the bed knew each other as old people know the partners with whom they have shared the same bed for many years, and they needed to say no more.

As long as there were two human beings working together on the same project, there would be competition and you could no more escape it than you could expect to escape the grave.

( B ) to finance, for not more than two years beyond the end of said period, such grants, contracts, cooperative agreements, and studies as may theretofore have been undertaken pursuant to this Act ; ;

The Secretary of the Interior shall submit a report of his findings, together with recommendations for an effective safety program for metal and nonmetallic mines ( excluding coal and lignite mines ) based upon such findings, to the Congress not more than two years after the date of enactment of this Act.

Whenever two or more standard broadcast stations operate simultaneously on the same or closely adjacent frequencies, each interferes to some extent with reception of the other.

By this standard, it is determined that where two stations operating on the same frequency are involved, objectionable interference from station A exists at any point within the service area of station B where station A's signal is of an intensity one-twentieth or more of the strength of station B's signal at that point.

A Junior who won two or more wins in the Open Class was eligible.

The two men resemble each other closely in their cunning, their egotism, their relentlessness.

In spite of the armistice negotiated by Amadee two years earlier, the war between Bishop Guillaume of Lausanne and Louis of Savoy was still going on, and although little is known about it, that little proves that it was yet another phase of the struggle against French expansion and was closely interwoven with the larger conflict.

The adolescent experiences two closely related crises: self-certainty vs. an identity consciousness ; ;

The order Caudata ( from the Latin cauda meaning " tail ") consists of the salamanders, elongated, low-slung animals that mostly resemble lizards in form, though this is a symplesiomorphic trait and the two groups are no more closely related than salamanders are to mammals.

Wallace did extensive fieldwork, first in the Amazon River basin and then in the Malay Archipelago, where he identified the Wallace Line that divides the Indonesian archipelago into two distinct parts, one in which animals closely related to those of Australia are common, and one in which the species are largely of Asian origin.

During his reign, Jerusalem became more closely allied with the Byzantine Empire, and the two states launched an unsuccessful invasion of Egypt.

Wester Aberdour has the more ' olde worlde ' feel of the two, with the narrower through road more closely hemmed in by shops and hotels.

Nevertheless, two closely related cultures are possible candidate regions as they broadly correspond to where sources placed the Basternae: the Zarubintsy culture lying in the forest-steppe zone in northern Ukraine-southern Belarus, and the Poienesti-Lukashevka culture in northern Moldavia.

Though closely related, the two disciplines are not necessarily the same.

The first two were closely related, and Attlee was assisted by Ernest Bevin.

The cut-up and the closely associated fold-in are the two main techniques:

The net result of these two closely linked pathways is the oxidation of nutrients to produce usable energy in the form of ATP.

Regarding mitotic chromosome structure, centromeres represent a constricted region of the chromosome ( often referred to as the primary constriction ) where two identical sister chromatids are most closely in contact.

The two teams met in the first regular season game the Cowboys ever played in 1960 ( a 35 – 28 loss to the Steelers ), the first-ever regular season victory for the expansion Cowboys in 1961, and would later meet in three Super Bowls, all of them closely contested events.

This can give rise to the situation in which two dialects ( defined according to this paradigm ) with a somewhat distant genetic relationship are mutually more readily comprehensible than more closely related dialects.

After dissecting the preserved head and foot of the specimen at the Oxford University Museum and comparing it with the few remains then available of the extinct Rodrigues Solitaire ( Pezophaps solitaria ) they found that the two were closely related.

Thomas Young performed a celebrated experiment in 1803 demonstrating interference from two closely spaced slits.

At Pennsylvania he worked closely with another student of Boas, Frank Speck and the two undertook work on Catawba in the summer of 1909.

This is a trait not found in the Clethraceae and Cyrillaceae, the two families most closely related to the Ericaceae.

For example, if there is a triple star system in which two stars orbit each other closely while a third star is in a more distant orbit, the two closely orbiting stars would be considered a component with two subcomponents.