Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Transform relevant

Denitrification in activated sludge systems is well known and well described. However, only a few investigations of anoxic transformations relevant for sewer systems have been performed. [Pg.122]

All chemical transformations relevant to metal/olefin reactions occur at the three orbitals in the plane between the two Cp rings or between the Cp and the N atom in the case of the CGC catalysts. This plane is usually referred to as the wedge or belt of the catalyst. The first detailed analysis of the electronic structure of group 4 metallocenes, and the implications on their chemistry, was performed by Lauher and Hoffmann with simple... [Pg.26]

The most important reactions related to ester and double-bond moieties have been the object of thorough reviews, particularly by Biermann and co-workers [1], Corma, Iborra and Velty [2], Behr and co-workers [3] and, within a wider scope, by Meier and co-workers [4]. The succinct treatment shown below is limited to transformations relevant to the scope of this book, viz. the routes to monomers or their precursors. [Pg.12]

Evidence That CXC Chemokines are Involved in Cellular Transformation Relevant to Preneoplastic-to-Neoplastic Transformation Evidence That Chemokines are Involved in the Regulation of Angiogenesis in Tumors... [Pg.255]

II. EVIDENCE THAT CXC CHEMOKINES ARE INVOLVED IN CELLULAR TRANSFORMATION RELEVANT TO PRENEOPLASTIC-TO-NEOPLASTIC TRANSFORMATION... [Pg.256]

Aspects of the Jahn-Teller symmetry argument will be relevant in later sections. Suppose that the electronic states aie n-fold degenerate, with symmetry at some symmetiical nuclear configuration Qq. The fundamental question concerns the symmetry of the nuclear coordinates that can split the degeneracy linearly in Q — Qo, in other words those that appeal linearly in Taylor series for the matrix elements A H B). Since the bras (/1 and kets B) both transform as and H are totally symmetric, it would appear at first sight that the Jahn-Teller active modes must have symmetry Fg = F x F. There... [Pg.5]

In Section IV.A, the adiabatic-to-diabatic transformation matrix as well as the diabatic potentials were derived for the relevant sub-space without running into theoretical conflicts. In other words, the conditions in Eqs. (10) led to a.finite sub-Hilbert space which, for all practical purposes, behaves like a full (infinite) Hilbert space. However it is inconceivable that such strict conditions as presented in Eq. (10) are fulfilled for real molecular systems. Thus the question is to what extent the results of the present approach, namely, the adiabatic-to-diabatic transformation matrix, the curl equation, and first and foremost, the diabatic potentials, are affected if the conditions in Eq. (10) are replaced by more realistic ones This subject will be treated next. [Pg.648]

For example one forms, within a two-dimensional (2D) sub-Hilbert space, a 2x2 diabatic potential matrix, which is not single valued. This implies that the 2D transformation matrix yields an invalid diabatization and therefore the required dimension of the transformation matrix has to be at least three. The same applies to the size of the sub-Hilbert space, which also has to be at least three. In this section, we intend to discuss this type of problems. It also leads us to term the conditions for reaching the minimal relevant sub-Hilbert space as the necessary conditions for diabatization. ... [Pg.678]

The obvious way to form a similarity between the Wigner rotation matrix and the adiabatic-to-diabatic transformation mabix defined in Eqs. (28) is to consider the (unbreakable) multidegeneracy case that is based, just like Wigner rotation matrix, on a single axis of rotation. For this sake, we consider the particular set of T matrices as defined in Eq. (51) and derive the relevant adiabatic-to-diabatic transfonnation matrices. In what follows, the degree of similarity between the two types of matrices will be presented for three special cases, namely, the two-state case which in Wigner s notation is the case, j =, the tri-state case (i.e.,7 = 1) and the tetra-state case (i.e.,7 = ). [Pg.686]

Comparing this equation with Eq. (75), it is seen that the mixing angle p is, up to an additive constant, identical to the relevant adiabatic-to-diabatic transformation—angle y ... [Pg.700]

The profits from using this approach are dear. Any neural network applied as a mapping device between independent variables and responses requires more computational time and resources than PCR or PLS. Therefore, an increase in the dimensionality of the input (characteristic) vector results in a significant increase in computation time. As our observations have shown, the same is not the case with PLS. Therefore, SVD as a data transformation technique enables one to apply as many molecular descriptors as are at one s disposal, but finally to use latent variables as an input vector of much lower dimensionality for training neural networks. Again, SVD concentrates most of the relevant information (very often about 95 %) in a few initial columns of die scores matrix. [Pg.217]

Issuance of a United States patent transforms a patent appHcant into a patentee, and new concerns may arise relevant to management. For example, the patent should be reviewed to determine formal and substantive correctness. An audit should be taken regularly to determine whether there is a continuing justification to pay the maintenance fees required to keep the patent in force during its effective period. The patentee or patent assignee may have to address concerns of patent infringement or patent vaHdity. [Pg.36]

A power system is connected to a number of power supply machines that determine the fault level of that. system (e.g. generators and transformers). The impedances of all such equipment and the impedances of the interconnecting cables and overhead lines etc. are the parameters that limit the fault level of the system. For ease of calculation, when determining the fault level of such a system it is essential to consider any one major component as the base and convert the relevant parameters of the other equipment to that base, for a quicker calculation, to establish the required fault level. Below we provide a few common formulae for the calculation of faults on a p.u. basis. For more details refer to a textbook in the references. [Pg.356]

For brevity, only the more relevant aspects are discussed here. For more details, refer to lEC 60044-2 and lEC 60186. for instrument voltage transformers and lEC 60076-3 for control transformers. [Pg.467]

Type tests These are conducted on a finished voltage or current transformer, one of each design and type, to verify their compliance with the design data and relevant Standards. [Pg.491]

Instrument and control transformers application and selection 15/495 Relevant Standards... [Pg.495]

Greater selectivity in purification can often be achieved by making use of differences in chemical properties between the substance to be purified and the contaminants. Unwanted metal ions may be removed by precipitation in the presence of a collector (see p. 54). Sodium borohydride and other metal hydrides transform organic peroxides and carbonyl-containing impurities such as aldehydes and ketones in alcohols and ethers. Many classes of organic chemicals can be purified by conversion into suitable derivatives, followed by regeneration. This chapter describes relevant procedures. [Pg.53]


See other pages where Transform relevant is mentioned: [Pg.323]    [Pg.37]    [Pg.44]    [Pg.402]    [Pg.403]    [Pg.380]    [Pg.381]    [Pg.334]    [Pg.356]    [Pg.356]    [Pg.238]    [Pg.124]    [Pg.330]    [Pg.346]    [Pg.254]    [Pg.675]    [Pg.116]    [Pg.323]    [Pg.37]    [Pg.44]    [Pg.402]    [Pg.403]    [Pg.380]    [Pg.381]    [Pg.334]    [Pg.356]    [Pg.356]    [Pg.238]    [Pg.124]    [Pg.330]    [Pg.346]    [Pg.254]    [Pg.675]    [Pg.116]    [Pg.43]    [Pg.513]    [Pg.515]    [Pg.637]    [Pg.644]    [Pg.704]    [Pg.406]    [Pg.442]    [Pg.408]    [Pg.386]    [Pg.515]    [Pg.375]    [Pg.218]    [Pg.459]    [Pg.477]    [Pg.235]   
See also in sourсe #XX -- [ Pg.167 , Pg.171 ]




SEARCH



Relevant transforms

© 2024 chempedia.info