Since practical washing procedures are both lengthy and expensive, a number of laboratory tests have been developed for the numerical evaluation of detergents.

Since it was first proposed as a part of Mars Direct, the Mars Habitat Unit has been adopted by NASA as a part of their Mars Design Reference Mission, which utilizes two Mars Habitat Units-one of which flies to Mars unmanned, providing a dedicated laboratory facility on Mars, together with the capacity to carry a larger rover vehicle.

Since 1934, Schrader had been working in a laboratory in Leverkusen to develop new types of insecticides for IG Farben.

Since the publication of the rat genome sequence, and other advances, such as the creation of a rat SNP chip, and the production of knockout rats, the laboratory rat has become a useful genetic tool, although not as popular as mice.

Since he realized there was a difference in testing the drug in a laboratory and using it in clandestine operations, he initiated a series of experiments where LSD was given to people in " normal " settings without warning.

Since the Sperry " big company " mentality encroached on the decision-making powers of the ERA founders, they left Sperry to form the Control Data Corp. in 1957, setting up shop in an old warehouse across the river from Sperry's St. Paul laboratory, in Minneapolis at 501 Park Avenue.

Since the middle 20th century, they have been replaced in laboratory contexts primarily by mice and rats.

Since Tetrahymena can be easily cultured in a large quantity in the laboratory, for years it has been a great source for biochemical analysis of important enzymatic activities and for purification of sub-cellular components.

Since 2001, the United Nations has had a presence at the WSF through UNESCO, showing the institutional credibility achieved by the forum, seen by UNESCO as a " prime opportunity for dialogue and a laboratory of ideas for the renewal of public policies " through " critical reflection on the future of societies we want to create and for elaborating proposals in search of solidarity, justice, peace and human rights ".

Since the distance between the Zeeman sub-levels is a function of the magnetic field, this effect can be used to measure the magnetic field, e. g. that of the Sun and other stars or in laboratory plasmas.

Since the introduction of automated analyzers into the clinical laboratory, the ESR test has been automatically performed.

Since the discovery of ribozymes that exist in living organisms, there has been interest in the study of new synthetic ribozymes made in the laboratory.

Since May 2011 the London office has been located on the 2nd floor of the former Drummond Gate headquarters and houses the methodology consultancy service, the virtual microdata laboratory and media briefings

Since the 1990s, various software packages have eased stimulus presentation and the measurement of behavior in the laboratory.

Since its inception as a local university facility, TRIUMF has evolved into a national laboratory while still maintaining strong ties to the research programs of Canadian universities.

Since the completion of the excavation in September 1994, all efforts have been concentrated on full-time conservation, study, and sampling for analysis in the conservation laboratory of the Bodrum Museum of Underwater Archaeology in Turkey.

Since these investigators had encountered defective lysogenic strains among their transductants, we felt that such strains should be included in the collection of lambda prophage mutants under study in our laboratory.

Since Weinberg's article there have been many historical and sociological studies on the effects of Big Science both in and out of the laboratory.

Since then more than 200 different populations have been created in this laboratory radiation, with selection targeting multiple characters.

Since 1973, the University of Tokyo has maintained a marine research laboratory in Ōtsuchi.

Since it opened its first overseas laboratory, in Sierra Leone, in 1921, the School has expanded its collaborations to more than 60 countries. In 2011 the Diploma in Tropical Nursing was reestablished at the School ..

Since the U. S. Postal Inspection Service ( USPIS ) had the best laboratory, the director of the new agency was recruited there.

Since the United States Postal Inspection Service ( USPIS ) had the best laboratory, the director of the new agency was recruited there.

Since then it has been studied in the laboratory, and various chemical reactions have been observed to emit electromagnetic energy as part of the process.

Since then, and since the pure grain had gotten him divorced from every decent -- and even indecent -- group from Greenwich Village to the Embarcadero, he had become a sucker-rolling freight-jumper.

Since appeals to morality, to humanity, and to sanity have had such small effect, perhaps our last recourse is the deterrent example.

Since his seizure, Scotty had had little appetite ; ;

Since Mr. McKinley had to give a lecture, Rachel and Scotty drove home alone in the Plymouth.

Since she could not act, one part suited her as well as any other, and so she was the first person to offer Mr. Lincoln a glass of water, holding it up to the box, high above her head, to Miss Harris, who had asked for it.

Since the Santo Spirito hospital had taken only men, he had had no experience in the study of female anatomy ; ;

Since then, the flowers she had planted had spread all over the hill.

Since he had gross income of $600 or more, he must file a return in which he may claim an exemption deduction of $600.

Since the writer had established this democratic procedure in the beginning he had to go along with their decision -- after, of course, pointing out whether he thought their decision was a wise or an unwise one.

Since the writer had not noticed this characteristic in married students scattered throughout the various sections previous to this experiment, nor, as a matter of fact, in those who were continuing in `` single sections '', he can only conclude that there must have been something `` contagious '' within the specific group which caused this to occur.

Since the details of the elections were settled the change of government had no direct effect on the technical aspects of the elections, and may have been more important as an indication of royal displeasure with the U.N.F.P.

Since the strength of the Mexicans had been underrated, too small a posse had been collected, and since the deputy had not been provided with search warrants, MacPherson and his men decided it was much wiser to withdraw.

Since the magnitude of the plan made secrecy impossible, once the wheels had began to turn, persons controlling German industries, social institutions, and armed forces became, through their anti-Semitism or their tolerance of it, conscious accomplices of Hitler's crimes ; ;

Since Mrs. Calhoun remembered only that the marriage had been in the spring, he started to plod through several months.

Since then he had worked at this and that, though some said his main interest was gambling.

Since Election Day, Vice President Richard Nixon had virtually retired -- by his own wish -- from public view.

Since he possessed more power in an interdependent universe of living beings and dead spirits, the emperor had to use it for the benefit of the living.