Slow system performance

These subsystems profoundly affect the fuel cell system performance. As an example, the inherently slow air (oxygen) electrode reaction must be acceler-... 

Human subjects exposed to 200ppm detected a strong odor, but excessive discomfort was not experienced at 400 ppm, there was strong eye and nasal irritation. Central nervous system effects, such as depression, poor memory, and slow visuomotor performance, have been associated with heavy exposures. ... 

Even assuming that these limitations are acceptable, the most appropriate and promising techniques for security applications are based on nanosecond neutron analysis (not only in API) therefore, the use of HPGe with its intrinsically slow signal (timing resolutions of tens of nanoseconds at best) and low-rate capability is highly undesirable. The use of HPGe in this application with 14-MeV neutron sources has been described in the literature for more than 15 years with little evidence that such detectors improve real-world system performance and much evidence that they do not. 

Elution efficiency. In flow systems with SPE involving derivatisation immediately after elution, it is possible to visually evaluate the efficiency of the elution process. In the ideal situation, a very abrupt colour formation is observed immediately after the inlet of the make-up stream. When elution is a limiting factor for optimum system performance, a slow fading of the colour is observed. 

Remark. Note that the discretization error analysis from [4] also allows the exclusive use of only the first iterate. We have tested this version of discretization, too, and have not obtained better performance. That is why we finally decided to stick to the full discretization scheme, which requires the approximation of gy. In addition, in almost all of our experiments the remaining slow system could be integrated explicitly i.e. with the choice /y = 0 in both A and A. In this case, we only need to decompose gz once per integration step - which has already been done in order to compute the projection of the initial data onto the manifold by Newton s method. 

As described below, the HAS-derived nitroxides in heterophasic polymer systems perform a triple role. First, they provide the contrast needed in the imaging experiments. Second, they enable the visualization of polymer morphology, based on the detection of two dynamically different components detected in the ESR spectra of the nitroxides in ABS, for example, the two sites, fast (F) and slow (S), have been assigned to location of nitroxides in butadiene-rich and styrene-acrylonitrile (SAN)-rich domains, respectively. Third, the spatial variation of the ESR spectra of nitroxides (in terms of intensity and line shapes) with treatment time, t, provides detailed information on the extent of degradation in the different miCTodomains. These experiments made possible the determination of the concentration profiles of the nitroxides from ID ESRl, and also of the spectral profiles from 2D spectral-spatial ESRI, both in a nondestructive way. In these studies the nitroxides, which are the contrast agents, are part of the systan therefore these studies represent the evolution of ESRl techniques beyond phantoms. 

As shown in Table 3 in an elevated temperature shear test, acrylic/BKUA-2260 systems perform extremely well, while elevated temperature peel shows some fall off in performance. Since the BKUA-2260 is self-crosslinking at elevated temperature and has the ability to co-cure with certain acrylic and vinyl-acrylic latexes, the elevated temperature performance of bonds depends, to some extent, on the previous thermal history of the bond. The shear test involves a slow heat up to test temperature and allows the bond to cure partially. Mechanical properties of thermally cured films of UCAR Latex 154/BKUA-2260 show 10 fold modulus increases over the uncured films. Vinyl-acrylic latexes that do not have the ability to co-cure with the phenolic do not exhibit the same high elevated temperature shear values. 

A water-reducible coating or resin is one that is diluted with water before use. Water-reducible alkyds give comparable drying performance to solvent-bome alkyds. However, they are not widely used because film properties tend to be poorer than those of solvent-bome alkyds, especially in air-dry systems (26). This is pardy because of alcoholysis of the alkyd by primary alcohols such as 1-butanol [71-36-3] C H qO, a common solvent in water-reducible alkyds (27,28) secondary alcohols such as 2-butanol [78-92-2] C qH O, minimize this problem (27). In any case, the slow loss of amine or ammonia leads to short-term high sensitivity to water. Even in the fully dry films, the presence of unreacted carboxyHc acid groups leads to films having comparatively poor water resistance limiting their usehilness. 

Note The time gap between a fa.st bus transfer i.s so small that it will not permit the various drives to slow down sufficiently to affect their performance or the system if they are made to re-accelerate (re-energize) on restoration of power. 

The influence of transport process in two-phase reaction systems depends on flow conditions, which change with the size of the equipment. This is the reason for the historic observation that performance changes as processes are scaled up and therefore scale-up should be done in several steps, each limited to a small increase in size. This is a slow and expensive method and still does not guarantee optimum design. 

Cess Pools This system is similar to a septic tank, in performance. Sewage water usually seeps through the open bottom and portholes in the sides of the walls. These can also clog up with overuse and the introduction of detergents and other material which slow up the bacterial action. 

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