Big Chemical Encyclopedia

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

Articles Figures Tables About

Structure normalization

Reference electrodes The generally accepted criterion for the effectiveness of a cathodic-protection system is the structure/electrolyte potential (Section 10.1). In order to determine this potential it is necessary to make a contact on the structure itself and a contact with the electrolyte (soil or water). The problem of connection to the structure normally presents no difficulties, but contact with the electrolyte must be made with a reference electrode. (If for example an ordinary steel prol e were used as a reference electrode, then inaccuracies would result for two main reasons first, electrochemical action between the probe and the soil, and second, polarisatibn of the probe owing to current flow through the measuring circuit.)... [Pg.243]

The emergent soliton structures arc obviously very reminiscent of the propagating structures normally associated with one-dimensional class c4 elementary CA, as well as the glider -like structures appearing in Conway s Game of Life (section 3.4.4). There are two noteworthy differences between these systems, however (aside from the fact that we are looking at the spatial derivative here as opposed to a... [Pg.400]

With diblock copolymers, similar behavior is also observed. One component is enriched at the surface and depending on miscibility and composition a surface-induced ordered lamellar structure normal to the surface may be formed. Recent investigations include poly (urethanes) [111], poly(methoxy poly (ethyleneglycol) methacrylate)/PS [112] and PS/PMMA [113, 114]. In particular the last case has been extensively studied by various techniques including XPS, SIMS, NR and optical interferometry. PS is enriched at the surface depending on blockcopolymer composition and temperature. A well ordered lamellar structure normal to the surface is found under favourable conditions. Another example is shown in Fig. 6 where the enrichment of poly(paramethylstyrene), PMS(H), in a thin film of a di-... [Pg.381]

F9. Fujii, H., Miwa, S., Tani, K., Fujinami, N., and Asano, H., Overproduction of structurally normal enzyme in man Hereditary hemolytic anemia with increased red cell adenosine deaminase activity. Br. J. Haematol. 51,427-430 (1982). [Pg.41]

Fig. 9.5 A midsagittal section through the human brain. Note that in this type of section half of the brain is cut away so that structures normally covered by the cerebrum are exposed. Fig. 9.5 A midsagittal section through the human brain. Note that in this type of section half of the brain is cut away so that structures normally covered by the cerebrum are exposed.
Frost-Kalkwarf equation calculated from molecular structures, normal bp and... [Pg.214]

The Eqs. (10) and (11) functionally connect thep parameter, the initial electron s velocity Vo and velocity s constituents Vqx and Voy in plane-parallel structure with distributed potential with the coordinate of its entry s point xo, on the electrode with distributed potential. Let us analyze Eq. (10) Under pxo < B the electron will lose the initial kinetic energy completely with generation of electromagnetic radiation (the kinetic energy is absorbed completely). Under these conditions the electron doesn t leave the structure. There is the partial selection of energy under px0 > B and the electron comes beyond the limits of structure. If electron enters the structure normally (Voy = Vo, Vox = Vo) the boundary condition after that electron leaves the structure can be written as ... [Pg.151]

The most stable cluster consists of an aggregation of four cation vacancies in a tetrahedral geometry surrounding an Fe3+ ion, called a 4 1 cluster. Cations in the sodium chloride structure normally occupy octahedral sites in which each metal is coordinated to six nonmetal atoms. The central Fe3+ ion in the 4 1 cluster is displaced into a normally unoccupied tetrahedral site in which the cation is coordinated to four oxygen ions. Because tetrahedral sites in the sodium chloride structure are normally empty, the Fe3+ is in an interstitial site. Equation (4.1) can now be written correctly as... [Pg.150]

Structure. Normal granular materials such as coal, ores and rocks can be effectively crushed employing the normal forces of compression, impact, and so on. With fibrous materials a tearing action is required. [Pg.105]

Exploration for unconformity-related deposits is based firstly on Proterozoic red-bed basins overlying basement complexes and source regions characterized by high U contents. Given this criteria alone, there are nearly 200 basins that would qualify. Graphitic metasedimentary units within the basement complex are desirable, but not necessary, as exemplified by the Nabarlek deposit in the Northern Territory, Australia (Polite et al. 2004). Repeated brittle reactivations of ductile structures, normally from far field tectonic events, that may offset the basal unconformity and were foci for fluid flow are required. [Pg.441]

Fig. 9.1. Structures of the acetate ion showing bond valences (above the bond) and bond lengths (in pm below the bond) (a) the ideal structure of the isolated ion (b) the structure normally observed in the solid state (c) the structure observed when bonded to a strong cation (Si) (d) the structure observed for the diprotonated acetate ion (e) the structure of the trifluoroacetate ion normally observed in the solid state. Fig. 9.1. Structures of the acetate ion showing bond valences (above the bond) and bond lengths (in pm below the bond) (a) the ideal structure of the isolated ion (b) the structure normally observed in the solid state (c) the structure observed when bonded to a strong cation (Si) (d) the structure observed for the diprotonated acetate ion (e) the structure of the trifluoroacetate ion normally observed in the solid state.
Teriparatide, the recombinant form of PTH 1-34, is approved for treatment of osteoporosis. Teriparatide is given in a dosage of 20 meg subcutaneously daily. Like fluoride, teriparatide stimulates new bone formation, but unlike fluoride, this new bone appears structurally normal and is associated with a substantial reduction in the incidence of fractures. Teriparatide is approved for use for only 2 years. Trials examining the sequential use of teriparatide followed by a bisphosphonate after 1 or 2 years are in progress and look promising. Giving teriparatide with a bisphosphonate has not shown greater efficacy than the bisphosphonate alone. [Pg.971]

Structure Normal hexane derivatives Melting Point, 0 C. -95.32 Boiling Point, 0 C. 68.74 Refractive Index, 1.3749 Density, dj° 0.6594... [Pg.362]

Frausto da Silva and co-workers proposed structure (131 R = OH) for the species predominant in the pH range 4-7, which corresponds to the structure normally assumed for amavadin which occurs in the toadstool Amanita muscaria.377,378... [Pg.548]

It has been mentioned that mole fractions are not always the most convenient composition variables since they often do not take into account particular features and conditions of the crystal structure. Normally, statistical considerations require composition variables which refer to the number of sites in a sublattice rather than to the number of component atoms. Let us discuss a simple example. Component B is dissolved in the interstitial lattice of crystal A. NH = nB/(nA + nB) does not have an immediate statistical meaning. However, if we know from the crystal structure condition that the number of interstitial sites per A-lattice site is miy then the fraction... [Pg.31]

THALLIUM. [CAS 7440-28-0], Chemical element symbol Tl, at. no. 81, at. wt, 204,38, periodic table group 3. mp 303.5°C, bp 1447-1467°C, density 11.85 g/cm3 (20°C). Elemental thallium has a hexagonal close-packed crystal structure normally, but also exhibits a face-centered cubic crystal structure. [Pg.1603]

Reactive sputter deposition is a useful technique not only for coating but also for obtaining metastable phases, especially nitrides. Nitrogen gas is activated in a plasma to enhance nitride formation and heating at high temperature is not required. It is possible to obtain metastable nitrides by sputter deposition in which species in the plasma are quenched on substrates. Compounds with different crystal structures normally do not form solid solutions, but by co-sputter deposition metastable solid solutions may form. [Pg.106]

Were the subjects asleep, and were their experiences actually dreams When occasionally questioned specifically by the experimenter, A and B felt sure they had not been asleep when the reported phenomena occurred. They referred to the continuity of the vase and the table percept throughout most of the experiences in question. The vivid phenomena seemed to be superimposed on that continuity. On some occasions, the subjects specifically mentioned that they had fallen asleep for a brief time, as they had become "suddenly" aware that their heads had fallen forward and that there had been a break in the continuity of the concentration. Nevertheless, the subjects could have had brief periods of sleep of which they were not aware. The perceptual continuity they experienced would argue against a dream state, as does the fact that their experiences did not have the complex structures normally associated with dreaming. [Pg.308]


See other pages where Structure normalization is mentioned: [Pg.51]    [Pg.582]    [Pg.291]    [Pg.180]    [Pg.42]    [Pg.191]    [Pg.176]    [Pg.127]    [Pg.177]    [Pg.31]    [Pg.143]    [Pg.73]    [Pg.310]    [Pg.229]    [Pg.706]    [Pg.191]    [Pg.92]    [Pg.10]    [Pg.165]    [Pg.137]    [Pg.139]    [Pg.154]    [Pg.472]    [Pg.370]    [Pg.73]    [Pg.364]    [Pg.193]    [Pg.217]    [Pg.533]    [Pg.174]    [Pg.140]   


SEARCH



Normal structure

© 2024 chempedia.info