That remained the state of affairs until the late 1960s when Harald Loe ( at the time a professor at the Royal Dental College in Aarhus, Denmark ) demonstrated that a chlorhexidine compound could prevent the build-up of dental plaque.

Farming of abalone began in the late 1950s and early 1960s in Japan and China.

Collins decided to record it in the late 1960s amid an atmosphere of counterculture introspection ; she was part of an encounter group that ended a contentious meeting by singing " Amazing Grace " as it was the only song to which all the members knew the words.

The last of the Ainu households disappeared in the late 1960s, when Yamanaka Kitaro committed suicide after the death of his wife.

His attitude towards conjectures was that one should not dignify a guess as a conjecture lightly, and in the Taniyama case, the evidence was only there after extensive computational work carried out from the late 1960s.

By the late 1960s he had started to become interested in scientific areas outside of mathematics.

From the late 1940s to the early 1960s, following the creation of the state of Israel, most of these Jews fled their countries of birth and are now mostly concentrated in Israel.

One story is that The Rolling Stones went to stay at Korner's house late one night, in the early 1960s, after a performance.

Although he himself was a blues purist, Korner criticised better-known British blues musicians during the blues boom of the late 1960s for their blind adherence to Chicago blues, as if the music came in no other form.

This practice was particularly popular in the late 1960s.

However, the late 1950s and early 1960s saw the onset of a lasting transformation of the city by the tourist industry.

The local economy is based upon tourism directed to the beaches of the Costa Blanca and particularly the second residence construction boom which started in the 1960s and reinvigorated again by the late 1990s.

From the late 1820s until the mid 1960s, Arapawa Island was a base for whaling in the Sounds.

The region was a major producer of raw opium ( hence the name Afyon ) until the late 1960s when under international pressure, from the USA in particular, the fields were burnt and production ceased.

Remains of the walls of this fort were discovered west of the castle when excavating the foundations for a new post office and telephone exchange building in the late 1960s.

By the late 1960s, the area of LAFTA had a population of 220 million and produced about $ 90 billion of goods and services annually.

Throughout the late 1950s and into the 1960s, the United States and the Soviet Union had been developing a series of missile systems with the ability to shoot down incoming ICBM warheads.

* About 50 people in Vernon, Florida collected insurance claims for loss-of-limb accidents in the late 1950s and early 1960s ; this was more than two-thirds of all such claims in the United States during that time.

He changed his surname from Einstein ( to avoid confusion with the famous physicist ) and began a comedy career that quickly made him a regular on variety and talk shows during the late 1960s and early 1970s.

A standardized form of the Basque language, called Euskara Batua, was developed by the Basque Language Academy in the late 1960s.

In the late 1960s and early 1970s, Thackeray built the party by forming temporary alliances with nearly all of Maharashtra's political parties.

However, in the late 1950s and early 1960s, base-stealing was brought back to prominence primarily by Luis Aparicio and Maury Wills, who broke Cobb's modern single-season record by stealing 104 bases in 1962.

During the late 1960s, the Baseball Players Union became much stronger and conflicts between owners and the players ' union led to major work stoppages in 1972, 1981, and 1994.

The BASIC language was also central to the HP Time-Shared BASIC system in the late 1960s and early 1970s, and the Pick operating system.

Following a brief modeling career in the late 1960s, Berenson became a freelance photographer.

If this violation is noticed too late, the employee will not only be required to pay tax on the excess contribution amount the year was earned, the tax will effectively be doubled as the late corrective distribution is required to be reported again as income along with the earnings on such excess in the year the late correction is made.

In the late 1980s the area was frequently in violation of multiple National Ambient Air Quality Standards established by the United States Environmental Protection Agency ( EPA ).

Duke Bennett was elected Mayor in late 2007, but Bennett's election was subsequently challenged by the losing incumbent, Kevin Burke, based on an alleged violation of the " Little Hatch Act " by Bennett ( the violation of which would have made Bennett ineligible for office ).

Efforts during the late 1950s revealed the violation of P-symmetry by phenomena that involve the weak force, and there were well-known violations of C-symmetry as well.

The appeals court agreed that the acts did indeed suggest " an intentional violation " of Rolax's rights, and that he " was detained and used for political purposes by his governor ," but upheld the trial court's decision that it was too late to sue.

" As an example, the enforcement action taken in late 2006 against firms mis-selling payment protection insurance was based on their violation of principle six of the FSA's Principles for Business, rather than requiring the use of the sort of complex technical regulations that many in financial services find burdensome.

" Harold L. Ickes, Secretary of the Interior in the late 1930s, said there was a violation of the Raker Act, but he and the city reached a final solution in 1945.

" Some more recent Thai Buddhist accounts ( from the late 1980s ) have " described homosexuality as a wilful violation of " natural " ( hetero ) sexual conduct resulting from lack of ethical control over sexual impulses.

The convention resolved in favor of making Kansas a free Territory, and as a consequence, a free State ; the convention looked upon the conduct of a portion of the people of Missouri in the late Kansas election as a gross outrage on the elective franchise and rights of freemen and a violation of the principles of popular sovereignty.

The flag of Czechoslovakia was taken over by the Czech Republic in late 1992 in direct violation of the 1992 Act on the Division of Czechoslovakia explicitly forbidding state symbols to be used by the two successor states.

Shortly after the resolution of the 2007 – 2008 Writers Guild of America strike, Triumph appeared at the WGA East Awards and lampooned many of the strike's key figures, as well as the controversy surrounding the decision of late night hosts ( such as O ' Brien and Jay Leno ) to return to the air in violation of Guild rules: How about our negotiating committee?

Because of its late introduction ( some three-fourths of the way through the model year ) and the ambiguous nature of the GTO – which was technically a violation of GM policy limiting intermediate models to 330 CID – the Olds offering was a conservative package.

In late 1915, the Attorney General of the United States advised the New York Central that its control of the Lake Shore and Michigan Southern and the Nickel Plate was in violation of the Federal antitrust laws.

Despite this warning, DeMeo's crew continued to sell large amounts of cocaine, marijuana, and a variety of narcotic pills, a violation many members of all Five Families continued to commit through the late 1970s and early 1980s due to the tremendous profits gained.

In the late 1960s when the university required faculty to sign an oath of loyalty to the United States, Marinsky refused, calling it a violation of civil liberties, a position that caused some other faculty members to lose their jobs.

The law was found to be in violation of the separate but equal clause in the state's constitution by the state's Supreme Court late in 1909 when no equal opportunity was offered for the state's African-American children.

In late 2004, however, the South Korean Government announced plans to move most of the national government branches, except the Executive Branch, to Gongju, thus evading violation of the Constitutional Court ruling and still allow Seoul to be a National Capital.

* A setup time violation, when a signal arrives too late, and misses the time when it should advance.