N-formals

Minato, K., Yasuda, R. and Yano, H. (1990b). Improvement of dimensional stabihty and acoustic properties of wood for musical instruments with cyclic oxymethylenes. n. Formalization with tetraoxane. Mokuzai Gakkaishi, 36(11), 990-996. 

A classification of hypervalent organo-nonmetallic derivatives, which have an electron-rich multicenter bonding system, has been devised by Perkins et al. in 1980. 2 This system, (the N-X-L system), describes the valence electron count and the coordination number. For an atom (X), the overall bonding system is described first by the number of valence shell electrons (N) formally directly associated with the atom (X), and by the number of ligands (L) directly bonded to it. A number of examples is shown below. 

OSiX2/OSiX (X = F, Cl) Being polymers, the silicones (OSiR2)n formally derived from the ketones, have no SiO double bonds but SiOSi bridges. The first example of such a monomeric species was the OSiCl2 molecule synthesized in a matrix reaction ... 

Avogadro Constant (N ) (Formally Avogadro s number) The number of atoms or molecules contained in one mole of any substance (6.0221367 x 10 ). Avogad ro proposed that each distinct substance in the gaseous s e consists of characteristic discrete particles called molecules a specified volume of any gas measured at a uniform pressure and temperature contains the same number of molecules. 

N-formals. Highly effective donor forms of formaldehyde are obtained by its reaction with amines or amides. Depending on the starting product and the reaction conditions, there are a large number of reaction possibilities. Thus we have such nitrogen formals as hexahydrotriazines, imidazolidines, oxazolidines, bisoxazolidines, aminals and methylol compounds of amides. 

Note that each term in this sum is a function of the four variables , F, N, and T, but the quantity obtained after summation over is a function of only three variables T, F, N. Formally, we have transformed one of our independent variables into T. Although Q has been defined as the normalization constant of Pr( ), it can be viewed as the result of the transformation of variables performed in (1.3.6). 

Moment n Formally the moment of a probability distribution. For a random variable, X, defined on a probability space, S, for an integer, k greater than or equal to 0, the fc moment about a constant, C, M)t X—C, are given by ... 

Random Variable n Formally a function defined on a sample space or variable determined by the outcome of a random experiment. See also Continuous Random Variable and Discrete Random Variable. 

Guarino, N. Formal ontology and information systems. In Guarino, N. (ed.) Formal Ontology in Information Systems. Proceedings of FOIS 98, pp. 3—15. lOS Press (1998)... 

ANT 08a] Antoni M., Ammad N., Formal validation method and tools for computerized railway interlocking systems , WCRR08 Congress, Formal Validation of Computerised Signal Boxes at the SNCF, Seoul, Korea, 21 May 2008. 

There are two crystalline phases known in the system Si-C-N, namely SiC N and SijCN (Riedel, 1997). They formally can be obtained by replacing in SijN the silicon atoms with carbon. Substitution of one silicon atom with carbon in Si,N, leads to Si CN, whereas replacing second silicon by carbon provides SiC N. Formally, the last member within this class of compound would be (all silicon atoms in SijN being replaced by carbon) however, the crystalline has not been experimentally verified so far. 

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