Carl Friedlander - translation to french
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Carl Friedlander - translation to french

GERMAN PATHOLOGIST AND MICROBIOLOGIST
Friedländer bacillus; Karl Friedlaender; Karl Friedländer; Carl Friedlaender; Friedlander bacillus; Friedlaender bacillus; Karl Friedlander; Carl Friedlander

Carl Friedlander      
Carl Friedlander (1847-1887), German pathologist

Definition

Carl Friedrich Gauss
<person> A German mathematician (1777 - 1855), one of all time greatest. Gauss discovered the method of least squares and Gaussian elimination. Gauss was something of a child prodigy; the most commonly told story relates that when he was 10 his teacher, wanting a rest, told his class to add up all the numbers from 1 to 100. Gauss did it in seconds, having noticed that 1+...+100 = 100+...+1 = (101+...+101)/2. He did important work in almost every area of mathematics. Such eclecticism is probably impossible today, since further progress in most areas of mathematics requires much hard background study. Some idea of the range of his work can be obtained by noting the many mathematical terms with "Gauss" in their names. E.g. Gaussian elimination (linear algebra); Gaussian primes (number theory); Gaussian distribution (statistics); Gauss [unit] (electromagnetism); Gaussian curvature (differential geometry); Gaussian quadrature (numerical analysis); Gauss-Bonnet formula (differential geometry); {Gauss's identity} (hypergeometric functions); Gauss sums ({number theory}). His favourite area of mathematics was number theory. He conjectured the Prime Number Theorem, pioneered the {theory of quadratic forms}, proved the {quadratic reciprocity theorem}, and much more. He was "the first mathematician to use complex numbers in a really confident and scientific way" (Hardy & Wright, chapter 12). He nearly went into architecture rather than mathematics; what decided him on mathematics was his proof, at age 18, of the startling theorem that a regular N-sided polygon can be constructed with ruler and compasses if and only if N is a power of 2 times a product of distinct Fermat primes. (1995-04-10)

Wikipedia

Carl Friedländer

Carl Friedländer (19 November 1847, Brieg (Brzeg), Silesia – 13 May 1887, Meran (Merano), County of Tyrol) was a German pathologist and microbiologist who helped discover the bacterial cause of pneumonia in 1882. He also first described thromboangiitis obliterans.

Edwin Klebs had seen bacteria in the airways of individuals who died from pneumonia in 1875; however, it was not until 1882 when Friedländer recognized that bacteria (Klebsiella pneumoniae) were nearly always observable in persons dying from pneumonia that the bold statement was made that these were the likely cause of pneumonia. Friedländer's second communication on the micrococci of pneumonia, which appeared on 15 November 1883, touched off a controversy over the causative agent of pneumonia that continued for the next three years. In this second report he noted that he had examined more than 50 additional cases of pneumonia and that he had identified bacteria in nearly all of them and that sections from which the bacteria were absent were from the lungs of patients dying late in the course of the disease. Friedländer also noted that it was necessary to use special stains (e.g. the Gram Stain) to see the bacteria because using ordinary stains (H&E) nuclei and fibrin stained the same way as bacteria and thus obscured the ability to see the bacteria. As a result, Klebsiella pneumoniae is often called Friedländer's bacterium or Friedländer's bacillus. It is unclear if the bacteria that he observed in persons dying of pneumonia were truly all Klebsiella, some may well have been Streptococcus pneumoniae.

In 1886, he introduced the ampoule in medicine.

He died a premature death, aged 39 or 40, after a brief stint with a respiratory disease, believed to be caused by his discovered infectious organism, the Friedlander's Bacillus.