to free a radical of fractions
41Épicatéchine — Catéchine Catéchine (+) Catéchine Général Nom IUPAC () 2 (3,4 dihydroxyphenyl)chromane 3,5,7 triol …
42Flavan-3-ol — Squelette de base des flavan 3 ol 2 phényl 3 chromanol Les flavan 3 ols ou flavanols ou catéchines sont une sous famille de flavonoïdes dont la structure est basée sur la 2 phényl 3 chromanol. Les flavanols ne doivent pas être confondues avec les …
43Deng Xiaoping — This is a Chinese name; the family name is Deng. Deng Xiaoping 邓小平 Deng Xiaoping in 1979 Chairman of the …
44Ring (mathematics) — This article is about algebraic structures. For geometric rings, see Annulus (mathematics). For the set theory concept, see Ring of sets. Polynomials, represented here by curves, form a ring under addition and multiplication. In mathematics, a… …
45Local ring — In abstract algebra, more particularly in ring theory, local rings are certain rings that are comparatively simple, and serve to describe what is called local behaviour , in the sense of functions defined on varieties or manifolds, or of… …
46Agriculture and Food Supplies — ▪ 2007 Introduction Bird flu reached Europe and Africa, and concerns over BSE continued to disrupt trade in beef. An international vault for seeds was under construction on an Arctic island. Stocks of important food fish species were reported… …
47Srinivasa Ramanujan — Infobox Scientist name=Srinivasa Ramanujan thumb|Srinivasa Ramanujan birth date = birth date|1887|12|22|df=y birth place = Erode, Tamil Nadu, India death date = death date and age|1920|4|26|1887|12|22|df=y death place = Chetput, (Madras), Tamil… …
48History of algebra — Elementary algebra is the branch of mathematics that deals with solving for the operands of arithmetic equations. Modern or abstract algebra has its origins as an abstraction of elementary algebra. Historians know that the earliest mathematical… …
49Compagnie des mines de Marles — Création 1852 Disparition 1946 (Nationalisation) Siège social …
50transition element — Chem. any element in any of the series of elements with atomic numbers 21 29, 39 47, 57 79, and 89 107, that in a given inner orbital has less than a full quota of electrons. Also called transition metal. [1920 25] * * * Any chemical element with …
