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.

In the late 1970s, the Continuing Anglican movement produced a number of new church bodies in opposition to women's ordination, prayer book changes, and the new understandings concerning marriage.

WSC came after an era during which the duopoly of Australian and English dominance dissipated ; the Ashes had long been seen as a cricket world championship but the rise of the West Indies in the late 1970s challenged that view.

Through the late 1970s and early 1980s, the group's popularity continued to grow ( although they were always more popular in North America and Continental Europe than in their home country, never achieving a UK Top 40 single or Top 20 album ).

To store matte information, the concept of an alpha channel was introduced by Alvy Ray Smith in the late 1970s, and fully developed in a 1984 paper by Thomas Porter and Tom Duff.

The election gave Democrats full control of the United States Congress, the first time one party controlled both the executive and legislative branches since Democrats held the 95th United States Congress during the Jimmy Carter presidency in the late 1970s.

During their heyday from the late 1970s to the mid-1990s, most BBSes were run as a hobby free of charge by the system operator ( or " SysOp "), while other BBSes charged their users a subscription fee for access, or were operated by a business as a means of supporting their customers.

With the original 110 and 300 baud modems of the late 1970s, BBSes were particularly slow and file transfers were typically limited to text files ( lists of BBS systems were a common example ) and small software applications, typically terminal programs for accessing BBSes.

Soon after, BBS software was being written for all of the major home computer systems of the late 1970s era-the Apple II, Atari, Commodore and TRS-80 being some of the most popular.

Purchased from Britain in 1956, the Minas Gerais was reconstructed in the Netherlands in 1960 and refitted extensively in Brazil in the late 1970s, and again in 1993.

The language and its variants became widespread on microcomputers in the late 1970s and 1980s, when it was typically a standard feature, and often part of the firmware of the machine.

Beatmatching was invented by Francis Grasso in the late 1960s and early 1970s.

Since its introduction at games by the " Roar from 34 ", led by Wild Bill Hagy and others, in the late 1970s, it has been a tradition at Orioles games for fans to yell out the " Oh " in the line " Oh, say does that Star-Spangled Banner yet wave " in " The Star-Spangled Banner ".

Korean-American artist Il Lee has been creating large-scale, ballpoint-only abstract artwork since the late 1970s.

During the late 1970s and early 1980s, the site hosted Creative Time's landmark Art on the Beach sculpture exhibitions.

He was one of the earliest founders and movement leaders of the Mujahideen in the late 1970s, right before the Soviet invasion of Afghanistan.

After becoming New York's de facto Red Light District in the 1960s and 1970s ( as can be seen in the films Taxi Driver and Midnight Cowboy ), since the late 1980s Times Square has emerged as a family tourist center, in effect being Disneyfied following the company's purchase and renovation of the New Amsterdam Theatre on 42nd Street in 1993.

The idea that the German army operated on a " blitzkrieg doctrine " was vigorously attacked in the late 1970s by Matthew Cooper.

The concept of a blitzkrieg Luftwaffe was challenged by Richard Overy in the late 1970s and by Williamson Murray in the mid-1980s.

In the late 1970s and early 1980s, the U. S. had experienced high inflation and Friedman's policy positions tended to defend the stronger dollar at that time.

Former Alabama governor and American presidential candidate George Wallace became born again in the late 1970s, which led him to apologize for his earlier segregationist views.

The show made Bixby a pop icon of the late 1970s and 1980s.

In the late 1970s, Diddley left Los Lunas and moved to Hawthorne, Florida where he lived on a large estate in a custom made log-cabin home, which he helped to build.