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Optimize results

Gammagraphic weld inspection in the lower range of steel thicknesses has been done with Iridium and Ytterbium isotope sources throughout the past. The large majority of applications has been using Iridium due to the unfavourable economical parameters of Ytterbium, obviously with non-optimal results at thin wall inspections. [Pg.423]

Hoffmann introdueed the so-ealled extended Hiiekel method. He found that a value for K= 1.75 gave optimal results when using Slater-type orbitals as a basis (and for ealeulating the Sg,v)- The diagonal h elements are given, as in the eonventional Hiiekel method, in terms of valenee-state IP s and EA s. Cusaehs later proposed a variant of this parameterization of the off-diagonal elements ... [Pg.198]

Hoffmann introdueed the so-ealled extended Hiiekel method. He found that a value for K= 1.75 gave optimal results when using Slater-type orbitals as a basis (and for ealeulating the... [Pg.608]

Characterize a potential energy minimum. Ageometry optimization results in anew structure at a minimum. You can examine atomic coordinates and energy of this structure. [Pg.57]

Lubrication AND lubricants). Optimal results are obtained at 130 5°C at a pressure of 1.5—2.0 MPa (15—20 bars) using 0.2 wt % nickel catalyst. Other catalysts and processing parameters may be used to produce unique derivatives. Simple double-bond hydrogenation at 140°C in the presence of Raney nickel catalyst produces glyceryl tris(12-hydroxystearate) [139-44-6], having a melting point of 86°C (46,47). [Pg.154]

Usually goodness of fit is provided by adding new parameters in the model, but it decreases the prediction capability of the retention model and influences on the optimization results of mobile phase composition. [Pg.45]

All three optimizations result in very similar planar structures. The bond lengths are all in fairly good agreement with experiment with the exception of the O-H distance. The bond angle predictions are more erratic some are reasonable while others have errors of several degrees. The dihedral angles are both predicted to be essentially zero in all three cases, consistent with a planar structure. [Pg.106]

For Sb, derived from cydopentanone, a maximum ee of 9096 was adiieved witii tlie bulky copper reagent r-BuPbySiOfCHyl Cu/Lit. EtyO bad to be used as solvent for optimal results in tiiis case, but THF was tiie best solvent in otiiets. Low temperature cnnditions (-100 C, or from -100 to -78 C) were used for all tlie enan-... [Pg.264]

The thermodynamic point of view developed in this review and in our original works with regard to the behavior of SAH in laboratory experiments and in soil models can pave, in our opinion, the most rational way for achieving the optimal results. Based on the existing theory of network polymers, this concept is undoubtedly open to further improvement that would expand its prognostic potentialities. [Pg.131]

MONITORING DRUGS GIVEN INTRAVENOUSLY. For optimal results, die nurse inspects the needle site and die area around die needle every hour for signs of extravasation of die IV fluid. The nurse performs diese assessments more frequently if the patient is restiess or uncooperative It is important to check the rate of infusion every 15 minutes and adjust it as needed. The nurse should inspect die vein used for die IV infusion every 4 hours for signs of tenderness, pain, and redness (which may indicate phlebitis or thrombophlebitis). If tiiese are apparent, die nurse must restart the IV in another vein and bring the problem to the attention of the primary health care provider. [Pg.96]

Blood coagulation tests are usually ordered before and during heparin tiierapy, and die dose of heparin is adjusted to die test results. Optimal results of therapy are obtained when the APTT is 1.5 to 2.5 times the control value The LMWHs do not require close monitoring of blood coagulation tests. [Pg.426]

Insulin must be administered via the parenteral route, usually the subcutaneous (SC) route Insulin cannot be administered orally because it is a protein and readily destroyed in the gastrointestinal tract. Regular insulin is the only insulin preparation given intravenously (IV). Regular insulin is given 30 to 60 minutes before a meal to achieve optimal results. [Pg.493]

In spite of the fact that the final result is always significant, a complete elimination of all the scars is usually impossible. Patients need to be aware that use of multiple complimentary techniques and time-consuming treatments is needed to produce optimal results. [Pg.96]

The first ternary metal oxide catalyst of Ca0-Mn0/Ce02 was prepared by simultaneous impregnation method, while the second ternary metal oxide of Ca0/Mn0-Ce02 catalyst was prepared by combination of co-precipitation and impregnation method. The catalysts composition used in this paper were based on multi-responses optimization result [3]. H2-TPR was carried out using Micromeritics 2900 TPD/TPR equipped by TCD. A catalyst amount of... [Pg.213]

To achieve a steady state, simulation time was set to 60 days which is six times of the SRT. The settling was assumed to ideal settling. A stepwise calibration nethdology was applied to the SBR process and some key parameters in ASM2d were optimized (results not shown). [Pg.402]

The Cr analogues 6 (Fig. 4.2) of the bis(carbene)pyridine systems were found to be exceptionally active for the oligomerisation of ethylene [10,11]. Activation with MAO led to optimal results, and complexes with Me, Pr and substitution... [Pg.107]

The addition of perfluoroalkyl iodides to simple olefins has been quite successful under aqueous conditions to synthesize fluorinated hydrocarbons.119 In addition to carbon-based radicals, other radicals such as sulfur-based radicals, generated from RSH-type precursors (R = alkyl, acyl) with AIBN, also smoothly add to a-allylglycines protected at none, one, or both of the amino acid functions (NH2 and/or CO2H). Optimal results were obtained when both the unsaturated amino... [Pg.67]

If the approach does not go beyond the ordinary entropy, or if it applies an optimized result to a constrained state, then one can immediately conclude that a quantitative theory for the nonequilibrium state is unlikely to emerge. Regrettably, for phenomenological theories of the type just discussed, the answer to both questions is usually negative. The contribution of Prigogine, in particular, will be critically assessed from these twin perspectives (see Section HE). [Pg.5]

Increasing the hydrogen partial pressure enables a subsequent enam-ine/immonium hydrogenation and thus leads to an n-regioselective hydro aminomethylation of terminal alkenes. In this case the optimal results were obtained with the rhodium(I)/XANTPHOS catalyst (Scheme 14) [59]. [Pg.156]

Some direct dyes are sensitive to reduction or hydrolysis under alkaline conditions, particularly if temperatures above 100 °C are used (section 3.1.3) pH 6 is frequently favoured for stability and this can usually be achieved using ammonium sulphate. A few dyes give optimal results under alkaline conditions, using sodium carbonate or soap the tetra-amino dye Cl Direct Black 22 (12.22) is an example. Whether or not an addition is needed will depend on whether alkali is already present in the commercial brand. [Pg.371]

For concentrated or bulk samples a transmission experiment is both the simplest and the most effective. In essence, one measures the X-ray intensities incident and transmitted through a thin and uniform film of the material. Careful analysis of signal-to-noise ratio considerations indicates that optimal results are obtained when the sample thickness is of the order of 2.5 absorption lengths. Since in this case a simple Beer s law applies, the data are usually plotted as In(7//0) versus E. The intensities are measured using ionization chambers in conjunction with high-gain electrometers (see Fig. 11). [Pg.288]

The medium composition used in the fed-batch process was optimized, resulting in cell densities near 100 g l-1. By using an exponential feed rate resulting in a growth rate of 0.05 h-1, a maximum biomass concentration of 112 g 1 1 was attained, with a biomass productivity of 1.8 g 1 1 h. The poly(3HAMCL) productivity however was low, 0.34 g 1 1 h, caused by a steady decrease of the poly(3HAMCL) content during the last part of the fermentation [51]. When this optimized medium composition was used in the continuous culture system described above, a maximum biomass concentration of 18 g 1 1 was reached. The PHA content however remained low at approximately 10% [51]. It is still unclear what causes these low PHA contents. [Pg.169]


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