Scientists from Paris

Marie Adolphe Carnot (27 January 1839 – 20 June 1920) was a French chemist, mining engineer and politician. He came from a distinguished family: his father, Hippolyte Carnot, and brother, Marie François Sadi Carnot, were politicians, the latter becoming President of the third French Republic.
He was born in Paris and studied at the École Polytechnique and the École des Mines. He became a member of the Corps des mines, and from 1864 to 1867, served as a mining engineer in Limoges. From 1868 to 1877 he was a professor of preparatory courses and general chemistry at the École des Mines in Paris, where from 1877 to 1901, he worked as a professor of analytical chemistry.In 1881 he was appointed Chief Engineer of Mines, and in 1894, was named Inspector General of Mines. He became director of the École des Mines in 1901, a post he held until 1907. Aside from administrative work and teaching and training many engineers, he wrote a treatise on the chemical analysis of minerals (Traité d'analyse des substances minérales, published 1898) and pursued research. The uranium ore carnotite is named after him.He was honoured with membership of the Académie d'Agriculture (1884) and Académie des sciences (1895), and was made a Commander of the Légion d'honneur (1903). He also pursued a political career.

Alexandre Joseph Émile Brumpt (10 March 1877, in Paris – 8 July 1951) was a French parasitologist.He studied zoology and parasitology in Paris, obtaining his degree in science in 1901, and his medical doctorate in 1906. In 1919 he succeeded Raphaël Blanchard (1857-1919) as professor of parasitology to the Faculté de Médecine de Paris, a position he maintained until 1948. Much of his career was spent performing research in Africa and Latin America.
Brumpt is credited for introducing a technique known as xenodiagnosis into parasitological research. In 1935, he described Plasmodium gallinaceum, an avian malarial parasite that infects chickens and other fowl. He also conducted important research involving the African tsetse fly (Glossina palpalis) as a biological vector for trypanosomiasis. In addition, he did extensive studies of the diseases: schistosomiasis, Chagas disease, onchocerciasis and leishmaniasis.
He described Blastocystis hominis and Entamoeba dispar. The latter species helped to explain why most people who appeared to be infected with Entamoeba histolytica were asymptomatic. However, because there are no morphological differences between the two species, his proposal was largely ignored for over 50 years before being proven correct using molecular techniques.The French Academy of Sciences awarded him the Prix Savigny for 1910. A number of parasitic species bear his name, including Plasmodium brumpti and Xenocoeloma brumpti. Also, a genus of phlebotomine sand flies, Brumptomyia, and a species of Corsican mosquito, Culex brumpti, are named after him.
Brumpt's best known written work is Précis de Parasitologie, which was published in six editions between 1910 and 1949. He was the author of many scientific papers, including several on the Anopheles mosquito and its relationship to malaria. He was the President of the Société zoologique de France in 1922. With Maurice Neveu-Lemaire and Maurice Langeron, he founded in 1923 the parasitological journal Annales de Parasitologie Humaine et Comparée, now continued as Parasite.

Gabriel Bertrand (born 17 May 1867 in Paris, died 20 June 1962 in Paris) was a French pharmacologist, biochemist and bacteriologist.
Bertrand introduced into biochemistry both the term “oxidase” and the concept of trace elements.
The laccase, a polyphenol oxidase and an enzyme oxidating urishiol and laccol obtained from the lacquer tree, was first studied by Gabriel Bertrand in 1894.Bertrand's rule refers to the fact that the dose–response curve for many micronutrients is non-monotonic, having an initial stage of increasing benefits with increased intake, followed by increasing costs as excesses become toxic. In 2005, Raubenheimer et al. fed excess carbohydrates to Spodoptera littoralis and extended Bertrand's rule to macronutrients.In 1894, with Césaire Phisalix, he developed an antivenom for use against snake bites.Bertrand was made a member of the Académie Nationale de Médecine in 1931. In 1932 he became foreign member of the Royal Netherlands Academy of Arts and Sciences.

Charles Eugène Bertrand (2 January 1851, in Paris – 18 August 1917) was a French botanist, paleobotanist and geologist. He is remembered for his research involving the formation of coal.
He studied sciences in Paris, where he had as influences botanist Joseph Decaisne and plant physiologist Pierre Paul Deherain. In 1874 he obtained his doctorate in sciences, and was later appointed professor of botany at the University of Lille (1878). From 1881 to 1887, he was head of the Archives botaniques du nord de la France.In 1878 he became a member of the Société botanique de France. He was the father of botanist Paul Charles Édouard Bertrand (1879-1944).

Émile Charles Achard (24 July 1860 – 7 August 1944) was a French internist born in Paris.In Paris, he served as médecin des hôpitaux (from 1893), later becoming a professor of general pathology and therapeutics. In 1910, he was appointed professor of internal medicine at the University of Paris (Hôpital Beaujon). During his career, he also served as a physician at Hôpital Cochin.

In 1896, along with Raoul Bensaude (1866–1938), he identified a disease he called paratyphoid fever. They were able to isolate the cause of illness to a microbe now classified as salmonella paratyphi B.
A postmenopausal condition known as "diabetic-bearded woman syndrome" is sometimes referred to as "Achard-Thiers syndrome", and the eponymous "Achard syndrome" is a disorder characterized by arachnodactyly, brachycephaly, a receding lower jaw and joint laxity in the extremities.In 1897, along with internist Joseph Castaigne (1871–1951), he developed a urinary test using methylene blue dye for examining the excretory function of the kidneys. The procedure was to become known as the "Achard-Castaigne test". With Castaigne and Georges Maurice Debove (1845–1920), he published Manuel des maladies du tube digestif.

Georges Claude (24 September 1870 – 23 May 1960) was a French engineer and inventor. He is noted for his early work on the industrial liquefaction of air, for the invention and commercialization of neon lighting, and for a large experiment on generating energy by pumping cold seawater up from the depths. He has been considered by some to be "the Edison of France". Claude was an active collaborator with the German occupiers of France during the Second World War, for which he was imprisoned in 1945 and stripped of his honors.

Joseph Louis François Bertrand (French pronunciation: [ʒozɛf lwi fʁɑ̃swa bɛʁtʁɑ̃]; 11 March 1822 – 5 April 1900) was a French mathematician whose work emphasized number theory, differential geometry, probability theory, economics and thermodynamics.

Jacques Benveniste (French: [ʒɑk bɛ̃venist]; 12 March 1935 – 3 October 2004) was a French immunologist born in Paris. In 1979, he published a well-known paper on the structure of platelet-activating factor and its relationship with histamine. He was head of allergy and inflammation immunology at the French biomedical research agency INSERM.
In 1988, Benveniste and colleagues published a paper in Nature describing the action of very high dilutions of anti-IgE antibody on the degranulation of human basophils, findings that seemed to support the concept of homeopathy. After the article was published, a follow-up investigation was set up by a team including John Maddox, James Randi and Walter Stewart. With the cooperation of Benveniste's own team, the group failed to replicate the original results, and subsequent investigations did not support Benveniste's findings. Benveniste refused to retract, damaging his reputation and forcing him to fund research himself, as external sources of funding were withdrawn. In 1997, he founded the company DigiBio to "develop and commercialise applications of Digital Biology." Benveniste died in 2004 in Paris following heart surgery.

Eugène-Melchior Péligot (24 March 1811 – 15 April 1890), also known as Eugène Péligot, was a French chemist who isolated the first sample of uranium metal in 1841.Péligot proved that the black powder of Martin Heinrich Klaproth was not a pure metal (it was an oxide of uranium, known in chemistry as UO2). He then succeeded in producing pure uranium metal by reducing uranium tetrachloride (UCl4) with potassium metal. Today better methods have been found.
Péligot was a professor of analytical chemistry at the Institut National Agronomique. He collaborated with Jean-Baptiste Dumas, and together they discovered the methyl radical during experiments on wood spirit (methanol). The terminology "methyl alcohol" was created by both chemists from "wood wine". They also prepared the gaseous dimethyl ether, and many esters. In 1838, they successfully transformed camphor into p-cymene using phosphorus pentoxide.
In 1844 he synthesized chromium(II) acetate, which was much later recognized (by F. Albert Cotton in 1964) to be the first chemical compound which contains a quadruple bond.

François Gros (French pronunciation: [fʁɑ̃swa ɡʁo]; 24 April 1925 – 18 February 2022) was a French biologist and one of the pioneers of cellular biochemistry in France. His scientific career concerned genes and their role in regulating cellular functions.Honorary professor at the Collège de France, member of the Institute of France, he was also director of the Pasteur Institute (1976–1982) and advisor to Prime Ministers Pierre Mauroy and Laurent Fabius (1981–1985).Elected correspondent (1977) then member (1979) of the French Academy of Sciences, he was permanent secretary from 1991 to 2000.Gros died on 18 February 2022, at the age of 96.