Big Chemical Encyclopedia

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

Articles Figures Tables About

Distributed sites

Logistics—If a company is geographically located such that it can not meet the desired service level and deliveiy requirements of its customers, tolling may provide a local production and distribution site. Shorter transportation routes for hazardous chemicals or wastes may also be a consideration. [Pg.6]

In order to study the influence of surface disorder in the MM reaction, Frachenbourg et al. [91] have considered a substratum which has two types of randomly distributed sites with different adsorption rates. It is found that such a kind of disorder can sustain a reactive steady state, in contrast to the standard MM process on homogeneous surfaces. [Pg.422]

Rainfall samples collected in the Great Lakes area of Canada in 1976 and 1977 contained mean concentrations of 1-2 ng/L (parts per trillion) a-endosulfan and 4—5 ng/L P-endosulfan. Endosulfan was detected in spring and summer rainfall samples but not in samples collected during the fall and winter (Strachan et al. 1980). a-Endosulfan has also been detected in snowpack samples obtained from widely distributed sites in the Canadian Arctic. Endosulfan concentrations in samples collected in the spring of 1986 ranged from 0.1 to 1.34 ng/L (Gregor and Gummer 1989). [Pg.231]

Recovery of DNAPL is a very slow process that is alfected by those factors encountered with LNAPL (i.e., relative permeability, viscosity, residual hydrocarbon pool distribution, site-specific factors, etc ). Dissolution of a DNAPL pool is dependent upon the vertical dispersivity, groundwater velocity, solubility, and pool dimension. Dispersivities for chamolid solvent are estimated for a medium to coarse sand under laboratory conditions on the order of 1(L3 to 1(H m. Thus, limited dispersion at typical groundwater velocities is anticipated to be slow and may take up to decades... [Pg.201]

Large differences in A sv s for a dual Gaussian distribution site model are required to produce nonlinear intensity Stern-Volmer plots. When the differences in /f.sv s are large enough to produce nonlinear intensity Stern-Volmer plots, wide ranges in the fractional contributions of the sites to the total intensity can yield detectable curvature. [Pg.104]

In this model, proton transport in the membrane is mapped on a percolation problem, wherein randomly distributed sites represent pores of variable sizes and fhus variable conductance. The distinction of pores of differenf color (red or blue) corresponds to interfacial or by bulk-like proton transport. Water uptake by wet pores controls the transition between these mechanisms. The chemical structure of the membrane is factored in at the subordinate structural levels, as discussed in the previous subsections. [Pg.391]

The success of treating tumours, especially solid tumours, by systemic therapy depends on various characteristics of the tumour. Besides the importance of intrinsic drug activity and the potential targets within the tumour cells, drug pharmacokinetics and whole body distribution, site of delivery and the ability of site-specific targeting (affinity) are important features. [Pg.202]

According to the vendor, MITUs can be half the cost of alternative technologies such as incineration, landfilling, or soil vapor extraction (SVE) (D17269U, p. 8). At a petroleum and gas distribution site in Schuylkill Haven, Pennsylvania, 4200 tons of contaminated soil were treated at a cost of 18.63/ton. (D17269U, p. 30). Additional vendor-supplied cost information is presented in Table 1. [Pg.446]

We briefly consider the use of literate programming techniques in enhancing collaborative virtual environments, which facilitate developed cooperation between geographically distributed sites. [Pg.4]

The homogeneous nucleation of martensite in typical solids is too slow by many orders of magnitude to account for observed results. Calculations of typical values of AQc using the classical nucleation model of Section 19.1.4 (see Exercise 19.3) yield values greatly exceeding 76 kT. Furthermore, nearly all martensitic transformations commence at very sparsely distributed sites. Small-particle experiments [14] have yielded typical nucleation densities on the order of one nucleation event per 50 pm diameter Fe-Ni alloy powder particle.3 Thus, nucleation of martensite is believed to occur at a small number of especially potent heterogeneous nucleation sites. [Pg.574]

Our starting point is a density analogous to that used in [49] in treating the migration of excitons between randomly distributed sites. This expansion is generalization of the cluster expansion in equilibrium statistical mechanics to dynamical processes. It is formally exact even when the traps interact, but its utility depends on whether the coefficients are well behaved as V and t approach infinity. For the present problem, the survival probability of equation (5.2.19) admits the expansion... [Pg.278]

I would argue that in innovation and in the drive to move academic technologies to industry, the second- and third-tier universities are inherently more aggressive or at least would like to be more aggressive than the first-tier universities in this. Frankly, all of our administrators hope that there is a Gatorade or a cis-platinum in their future. Among the distribution sites I would hope we would consider for the ultimate output of this conference are the second- and third-tier academia. I don t think MIT and Harvard University need to know what we have said here. If they did know it, they wouldn t change their policies anyway. [Pg.113]

In the first years of Prohibition, Ekiel s four boys ran all bootlegging from the prairie states of Canada to major distribution sites south like Chicago. To secure the shipment lines, Harry set up a dummy firm, Transcanada Transport Company. Trans-canada was a protective cover for the Canadian Pacific Railway owned by respectable gentlemen back in London, which ran the whiskey across the border. (6) The Bronfmans also bought up stretches of barren farmland along the border and even built an underground pipeline to pump their "chickencock" into the United States. [Pg.271]

Registration of the importer. This involves the inspection and certification of the importer within the EU by an approved certification body. The inspection covers the offices of the operation as well as any ancillary storage and distributions sites, especially if the handling of bulk materials such as grain is involved. On completion of the certification procedure, the body registers the importer with the national control body, for example, UKROFS in the UK. [Pg.58]

In the USA, the company has two manufacturing plants located in Columbus, OH, and five distribution sites located in Marietta, GA, IL Fullerton, CA Dallas, TX and Mt. Laurel, NJ, respectively. It also has a manufacturing plant in Gentbrugge, Belgium and another distribution site in Northampton, UK. The corporate office is located in Columbus, Ohio. [Pg.126]

Nerve Block Nervefs) Involved Sensory Distribution Site of Injection ... [Pg.325]

The benefits of nonuniform activity distributions (site density) or diffusive properties (porosity, tortuosity) within pellets on the rate of catalytic reactions were first suggested theoretically by Kasaoka and Sakata (Ml). This proposal followed the pioneering experimental work of Maatman and Prater (142). Models of nonuniform catalyst pellets were later extended to more general pellet geometries and activity profiles (143), and applied to specific catalytic reactions, such as SO2 and naphthalene oxidation (144-146). Previous experimental and theoretical studies were recently discussed in an excellent review by Lee and Aris (147). Proposed applications in Fischer-Tropsch synthesis catalysis have also been recently reported (50-55,148), but the general concepts have been widely discussed and broadly applied in automotive exhaust and selective hydrogenation catalysis (142,147,149). [Pg.288]

An initial network configuration was set up by randomly choosing sizes for all sites and bonds, while observing the imposed twofold size distribution. Sites were placed at the nodes of the cubic lattice and bonds in between the nodes. Node to node distance was constant (i.e. equal to the diameter of the largest site) the length of each bond was adjusted to a value enough to connect its two neighbouring sites. This particular selection of bond-site distance defined the porosity of the network. [Pg.126]

The mature bean is innocuous if the hard outer coat is intact. Any interruption in the integrity of the seed coat (e.g., chewing) or ingestion of the soft-coated immature bean may cause toxicity. The inner core contains the amino acid n-methyltryptophan, abric acid, glycyrrhizin, and abrin. Abrin is stable in the gastrointestinal tract where it is slowly, but erratically absorbed. In rats, distribution sites occur primarily in the liver (12%) and spleen. Biotransformation and elimination of toxalbumins are poorly defined. [Pg.1468]

From a photomicrographic study, Figlarz and Vincent [41] concluded that the dehydration of Co(OH)2 is initiated at randomly-distributed sites on the surfaces of the approximately hexagonal crystals of reactant. Following the topotactic advance of the reaction interface, alignment of the (111) fece of CoO with (0001) of Co(OH)2 preserves the external form of the reactant particles to yield pseudomorphic particles of product. Appreciable quantitites of water are retained in the residual material. [Pg.280]

Distribution strategies. By providing voucher redemption rates for each voucher distributor, the information system identifies which are the most effective. This information can be used to create productivity incentives. The information system can also identify the distribution sites from which vouchers are most likely to be redeemed, and it can identify where they achieve the scheme s aims most cost-effectively. [Pg.71]

Active Catalyst Sites (Number and Distribution) Site Strength ... [Pg.92]


See other pages where Distributed sites is mentioned: [Pg.273]    [Pg.658]    [Pg.407]    [Pg.550]    [Pg.58]    [Pg.448]    [Pg.200]    [Pg.91]    [Pg.10]    [Pg.11]    [Pg.101]    [Pg.262]    [Pg.154]    [Pg.121]    [Pg.67]    [Pg.56]    [Pg.433]    [Pg.267]    [Pg.843]    [Pg.259]    [Pg.479]    [Pg.479]    [Pg.30]    [Pg.100]    [Pg.11]    [Pg.239]   
See also in sourсe #XX -- [ Pg.259 ]




SEARCH



Active sites, nonuniform distribution

Active-site distributions

Adsorption Isotherms and Site Distribution

Binding site distribution

Bone, lead distribution accumulation sites

Catalysts activity site distribution

Cation-site distribution

Charge distribution MUlti Site

Deuterium site-specific distribution

Distribution function site energy

Distribution function, sites

Element site distributions

Four-site orientational distribution

Glassy polymers site distribution model

Isoprene polymerization active site distributions over kinetic

Molecular weight distribution single-site catalysts

Nontarget-site Resistance by Altered Herbicide Distribution

Site energy distribution

Site energy distribution differential

Site energy distribution integral

Sites, distribution

Sites, distribution

Sites, spatial distribution

Supramolecular polymers site distribution

Synthesis sites probe distributions

Titania site distribution

© 2024 chempedia.info