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The company invented the mechanical syringe pump in the 1950s, and introduced the first microprocessor controlled syringe pumps in the 1980s. [5] Harvard Apparatus also developed first volume controlled- and then pressure controlled ventilators, pulsatile blood pumps, transducers, amplifiers, recorders, glassware and many other specialized bioscience research products.
A syringe pump for laboratory use. World Precision Instruments (WPI) SP120PZ. A syringe driver, also known as a syringe pump, is a small infusion pump, used to gradually administer small amounts of fluid (with or without medication) to a patient or for use in chemical and biomedical research. Some syringe drivers can both infuse and withdraw ...
This is a list of British periodicals established in the 19th century, excluding daily newspapers.. The periodical press flourished in the 19th century: the Waterloo Directory of English Newspapers and Periodicals plans to eventually list more 100,000 titles; the current Series 3 lists 73,000 titles. 19th-century periodicals have been the focus of extensive indexing efforts, such as that of ...
The NS 3500 was a series of express train steam locomotives of Nederlandse Spoorwegen (NS) and its predecessors Noord-Brabantsch-Deutsche Spoorweg-Maatschappij ...
In the 1960s, after abandoning a project to create an arrowhead price guide, Overstreet turned his attention to comics, which had no definitive guide. [1] Comic back-issue prices had stabilized by the end of the 1960s, [2] and, Jerry Bails, who had recently published the Collector's Guide to the First Heroic Age, was considering creating a ...
Wife selling in its "ritual form" appears to be an "invented custom" that originated at about the end of the 17th century, [1] although there is an account from 1302 of someone who "granted his wife by deed to another man". [2]
Painting of the Royal Institution by Thomas Hosmer Shepherd circa 1838. Founded in 1799 with the stated purpose of "diffusing the Knowledge, and facilitating the general Introduction, of Useful Mechanical Inventions and Improvements; and for teaching, by Courses of Philosophical Lectures and Experiments, the application of Science to the common Purposes of Life," the Royal Institution was a ...
Parkers Car Price Guide is a car valuations, reviews and advice website, and is one of the largest of its type in Europe. It was a monthly magazine between March 1972 and January 2020, and since 1998, a website with reviews and price lists for new and used cars in the United Kingdom. Initial searches are free, with payment required to access ...