Big Chemical Encyclopedia

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

Articles Figures Tables About

NOEDS experiment

On slow-speed equipment, where the hub does not have to be removed for maintenance and integral hubs are not available from the supplier, a straight fit can be used with a reasonably heavy shrink—1.25 mil/ in. of diameter. Tolerances may allow this value to vary from 1.0 to 1.5 mil/in. of diameter however, 1.0 mil/in. may be loo loose for some applications, while 1.5 mil/in. over-stresses hubs at maximum bore sizes. In light of this, each application should be carefully evaluated if there is no experience at hand to use as a guide. Of course, field removal at the higher shrink fit is mnrv difficult. Keys should not be used. [Pg.335]

A As z company we have adopted ISO 9000 and today most of our staff are familiar with this system. Changing to a different system would cause confusion. We did consider adopting ISO 14000, the new environmental standard. However, we have no experience with ISO 14000, and I consider it prudent to stick with something we already know. The integration itself will introduce enough changes in the way we work. We may revisit this decision is a few years when some of our competitors have tried out ISO 14000 ... [Pg.42]

Experimental research chemists with little or no experience with computational chemistry may use this work as an introduction to electronic structure calculations. They will discover how electronic structure theory can be used as an adjunct to their experimental research to provide new insights into chemical problems. [Pg.313]

No experiments appear to have been made with such cells, although the equation has been verified with oxygen at different partial pressures in admixture with nitrogen, with platinum electrodes and hot solid glass as electrolyte (Haber and Moser). A similar case is that of two amalgams of a metal, of different concentrations, as electrodes, and a solution of a salt of the metal as electrolyte (G. Meyer, 1891). Here we must take the osmotic pressures of the metals in the amalgams, Pi, P2, and, for an 7i-valent metal ... [Pg.464]

All these experiments can be explained simply using quantum electrodynamics. There has been to date no experiment to violate this theory. We will now see what are its predictions in various cases. [Pg.354]

When a reaction proceeds in a single elementary step, its rate law will mirror its stoichiometry. An example is the rate law for O3 reacting with NO. Experiments show that this reaction is first order in each of the starting materials and second order overall NO + 03- NO2 + O2 Experimental rate = i [N0][03 J This rate law is fully consistent with the molecular view of the mechanism shown in Figure 15-7. If the concentration of either O3 or NO is doubled, the number of collisions between starting material molecules doubles too, and so does the rate of reaction. If the concentrations of both starting materials are doubled, the collision rate and the reaction rate increase by a factor of four. [Pg.1062]

Figure 2, Selected residual IR spectra from the UDMH + NO experiments (a) spectrum of un-known(s) formed in approximately 3 h from UDMH + NO in the dark (b) residual spectrum at 19 min into the UDMH + NO irradiation (c) residual spectrum at 200 min into the irradiation. Figure 2, Selected residual IR spectra from the UDMH + NO experiments (a) spectrum of un-known(s) formed in approximately 3 h from UDMH + NO in the dark (b) residual spectrum at 19 min into the UDMH + NO irradiation (c) residual spectrum at 200 min into the irradiation.
Plm - plasmalemma, CW -cell wall, ChE- cholinesterase, ChR - cholinoreceptor, AdR -adrenoreceptor, Glc-glucosidase, I - Inhibition, S-stimulation,l50 or S50 - concentration, which inhibits or stimulate the process by 50 %, N - no effect, (-) - no experiments... [Pg.133]

Under what conditions can experiments yield data relevant to the goal we have just described Two conditions have to be fulfilled the various dissolved hydrogen species have to have had time to get equilibrated with each other before the surface boundary conditions have changed appreciably, and the surface chemical potential /x must be, if not known, at least reproducible in experiments involving different bulk dopings. At the present writing, there have been no experiments that are entirely beyond question in either of these respects, but several experiments, which we shall presently discuss, can plausibly be argued to satisfy both criteria. [Pg.351]

Firstly, the industry has little or no experience with most of these tests, especially those which have not reached their finalised format yet. Whilst the industry ideal may be to produce materials... [Pg.481]

These unusual results suggest that dichlorosilane may have added to these alkenes by a thermal or free-radical mechanism, and that the addition was not catalyzed by chloroplatinic acid in the usual way. No experiment in which these reagents were heated in the absence of platinum was described.. wm-Tetrarnethyldisiloxane added to 3-heptene at reflux with chloroplatinic acid in mole ratios of 1/2.1/10-5 at reflux for 48 hours to give an excellent yield of a mixture of 1,3-diheptyltetramethyl-disiloxanes. The heptyl substituents were mostly rc-heptyl, but they included a considerable amount of 3- and 4-heptyl as well. No 2-heptyl substituents were detected (2a). [Pg.437]

Figure 5. Example of the ion-molecule RISA cycle using NO. Experiments using this process are in progress at ORNL. Figure 5. Example of the ion-molecule RISA cycle using NO. Experiments using this process are in progress at ORNL.
Figure 6. A laser scheme for the NO experiment suggested in Figure 5. Figure 6. A laser scheme for the NO experiment suggested in Figure 5.
Task Freq. routine task very infrequent no experience base... [Pg.33]

Although no experiment has yet been reported to support the idea, it seems clear that a majority of the pyrrolidine alkaloids arise from the ornithine, pu-trescine, and proline pool. This could be the case for ficine (61) and isoficine (62), vochysine (63), and phyllospadine (64) but also of the Darlingia alkaloids, which share common features with hygrine this assertion probably also holds for the ruspolinone (25) and odorine-roxburghlin (59) families. Peripentadenine, isolated from a plant of the family Elaeocarpaceae, bears resemblance to other alkaloids of the elaeocarpus type such as isoelaeocarpicine (124) (161). It cannot be excluded, however, that spermidine may be a biosynthetic intermediate instead of putrescine. The question of the origin of ant alkaloid substances remains so far without an obvious answer. [Pg.308]

The XeF2 polymer surface fluorination technique can be easily applied at manufacturing companies that have no experience in dealing with fluorine. [Pg.239]

Costs of treatment techniques vary strongly. The costs not only depend on the type of treatment process but also on the concentrations of the pollutants to be removed, and the required removal efficiency of the pollutants. Most treatment steps have been developed for the treatment of wastewater at a temperature above zero degree Celsius as lower limit and somewhat above ambient temperature as upper limit. An exception is anaerobic treatment, which is often also applied at temperatures of about 60°C. In general little or no experience is available with the purification of wastewater at temperatures above 50° C. Experimental research is necessary to assess the feasibility of a treatment step in that temperature range. [Pg.234]

As far as the present reviewer is aware, no experiments of this kind have been performed yet. It is easy to think of other possibilities for testing Eq. (30). Thus, specimens of equal volumes but different areas A, and, in another series, specimens of a constant A but different volumes could be compared according to the theory, the volume is irrelevant for the value of W0 or for the extension produced by a given W. Would this prediction be confirmed ... [Pg.22]

Fig. 4 (a) and (b) explain the principle. This is the thermally stimulated current to be used for the analysis of the trap depth and its population. In so far as the film has no experience of being heated above 110°C, the same film assembly could be used repeatedly many times with satisfactory reproducible results. [Pg.208]


See other pages where NOEDS experiment is mentioned: [Pg.80]    [Pg.526]    [Pg.779]    [Pg.851]    [Pg.1134]    [Pg.77]    [Pg.412]    [Pg.243]    [Pg.305]    [Pg.12]    [Pg.32]    [Pg.6]    [Pg.300]    [Pg.93]    [Pg.428]    [Pg.740]    [Pg.14]    [Pg.227]    [Pg.113]    [Pg.845]    [Pg.48]    [Pg.172]    [Pg.188]    [Pg.28]    [Pg.247]    [Pg.286]    [Pg.931]    [Pg.609]    [Pg.47]    [Pg.80]    [Pg.9]    [Pg.78]   
See also in sourсe #XX -- [ Pg.382 , Pg.392 ]




SEARCH



Experience Does Count No Ifs, Ands, or Buts about That

© 2024 chempedia.info