Axelrod (1912–2004) is probably best known for his research in the early 1960s on brain chemistry, which has become fundamental to our understanding of depression and anxiety disorders. Several slide rules with the number 1767 were made by Dietzgen: this one was named “National” and had K, S, A, B, CI, C, D, T, and L scales on its one printed side to calculate single logarithms and trigonometric and exponential functions, as well as the basic arithmetic functions. Before electronic calculators became available in the early 1970s, scientists used slide rules to accurately make complex calculations. Julius Axelrod of the NIH National Institute of Mental Health (NIMH) to analyze the data from his seminal experiments on neurotransmitter re-uptake. Keuffel & Esser Polyphase Duplex Decitrig Slide Rule, Model 4071-3 , c.1939įar from being a glorified ruler, this plastic slide rule, produced by Dietzgen Co. Rowe also described the epidemiology and clinical characteristics of these infections. They get their name from the human organ they were isolated from: adenoids. Adenoviruses mainly cause respiratory illnesses but can also cause other infections such as pink eye (conjunctivitis). He was the first to isolate an adenovirus from patients and helped to clarify its role in respiratory disease. Rowe, chief of the Laboratory of Viral Diseases at the National Institute of Allergy and Infectious Diseases. Dempster of Berkeley, California, filed the first patent filed for a circular slide rule on Apthe patent was issued on March 15, 1932. This slide rule is one of the commonly used 6-inch slide rules, equivalent to a 14-inch straight slide rule in calculation power. AA., after 1933Ī circular slide rule eliminates the problem of calculations running off the scale, as the scale has no end. Midget Slide Rule and 06.0005.001 Eugene Dietzgen Co. See also 05.0014.003, Eugene Dietzgen Co. This slide rule is one of several belonging to Berger in the NIH Stetten Museum collection. This thermometer could measure temperature differences to several micro-degrees centigrade and is a forerunner of the digital thermometers used today for cooking and taking temperatures. patents: the first in 1988 for the computer-controlled all-tantalum stopped-flow micro calorimeter and the second in 1992 for the high-resolution digital thermometer. ![]() Over the course of 40 years, Berger developed a number of instruments used by scientists at the NIH. Berger, who owned this rule, began his career at the NIH in 1962 in the Laboratory of Technical Development, NHLBI. Catalogue, 38th Edition, 1936) This model includes DF, CF, CI, C, and D scales. This slide rule was “especially designed for the Merchant, Importer, Exporter, Accountant, Manager, Mechanic, Foreman, and others, whose computations involve only multiplication, division, proportion, and percentage.” ( Keuffel & Esser Co. ![]() Rowe (1926–1983), chief of NIAID’s Laboratory of Viral Disease, was the first to isolate an adenovirus from patients, and he helped to clarify its role in respiratory disease. Janet Harley (NIAID), Rowe used this abacus for many years “in making rapid calculations for data analysis-before and even after hand calculators were readily available.” His use of this calculation aid is of interest because many of Rowe’s research contributions had important and fairly sophisticated mathematical aspects. Rowe of the National Institute of Allergy and Infectious Diseases (NIAID).
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