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C, or c, is the third letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is cee (pronounced 'siː), plural cees. History "C" comes from the same letter as "G". The Semites named it gimel. The sign is possibly adapted from an Egyptian hieroglyph for a staff sling, which may have been the meaning of the name gimel. Another possibility is that it depicted a camel, the Semitic name for which was gamal. Barry B. Powell, a specialist in the history of writing, states "It is hard to imagine how gimel = "camel" can be derived from the picture of a camel (it may show his hump, or his head and neck!)". In the Etruscan language, plosive consonants had no contrastive voicing, so the Greek 'Γ' (Gamma) was adopted into the Etruscan alphabet to represent /k/. Already in the Western Greek alphabet, Gamma first took a '' form in Early Etruscan, then '' in Classical Etruscan. In Latin

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Development of Cyclopentadienylcobalt(III) Catalyzed Asymmetric C-H Functionalizations

Kristers Ozols

Transition metal catalyzed C-H activation plays a major role in modern organic chemistry, affording mild, selective and atom-efficient protocols. Most of current developments in the field rely on the use of several precious metals. As a consequence, an intense research is going on in order to develop methodologies that might employ the more abundant 3d metals instead. Lately, cobalt catalysis has attracted much attention and displayed reactivities analogous to those of rhodium. Interestingly, there are very limited number of reports on asymmetric cobalt(III) catalyzed C-H functionalization. Therefore, the aim of our research is do develop efficient enantioselective cobalt(III)-catalyzed C-H functionalization protocols.

EPFL2022

A Global Version Of The Darboux Theorem With Optimal Regularity And Dirichlet Condition

Bernard Dacorogna, Olivier Kneuss

Let n > 2 be even; r >= 1 be an integer; 0 < alpha < 1; Omega be a bounded, connected, smooth, open set in R-n; and nu be its exterior unit normal. Let f, g is an element of C-r,C-alpha((Omega) over bar; Lambda(2)) be two symplectic forms (i.e., closed and of rank n) such that f-g is orthogonal to the harmonic fields with vanishing tangential part, nu boolean AND f,nu boolean AND g is an element of C-r+1,C-alpha(partial derivative Omega; Lambda(3)) and nu boolean AND f = v boolean AND g on partial derivative Omega. Moreover assume that tg + (1-t)f has rank n for every t is an element of [0, 1]. We will then prove the existence of a phi is an element of Diff(r+1,alpha)((Omega) over bar; (Omega) over bar )satisfying

2011

Magnetic phase diagram of the antiferromagnetic cobalt tellurate Co3TeO6

Helmuth Berger, Wei Li

In this study, we measured the temperature-dependent magnetic susceptibility [chi(T)], ac magnetic susceptibility [chi(ac)(T)], specific heat [C-p(T)], and high-field magnetization [M(H)] of a newly synthesized single-crystalline material, Co3TeO6. Two transitions were observed in chi(T) and C-p(T) curves at values of T-N1 and T-N2 of approximately 26 and 18 K (H = 0), respectively. The high-field M(H) curves exhibited strong magnetic anisotropy and several field-induced transitions, suggesting that the magnetic ground state was complicated. Large spin-lattice coupling was evident by the large hysteresis in the M(H) curves and through analysis of the specific heat data. We propose herein an H-T phase diagram that is consistent with our experimental findings.

2011

MATH-611: Scientific programming for Engineers

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La Physique Générale I (avancée) couvre la mécanique du point et du solide indéformable. Apprendre la mécanique, c'est apprendre à mettre sous forme mathématique un phénomène physique, en modélisant la situation et appliquant les lois de la physique.

PHYS-101(k): General physics : mechanics

Le but du cours de physique générale est de donner à l'étudiant.e les notions de base nécessaires à la compréhension des phénomènes physiques. L'objectif est atteint lorsque l'étudiant.e est capable de prévoir quantitativement les conséquences de ces phénomènes avec des outils théoriques appropriés.