Fast return

Two-dimensional (2D) spectroscopy is used to obtain some kind of correlation between two nuclear spins 7 and J, for instance through scalar or dipolar connectivities, or to improve resolution in crowded regions of spectra. The parameters to obtain 2D spectra are nowadays well optimized for paramagnetic molecules, and useful information is obtained as long as the conditions dictated by the correlation time for the electron-nucleus interaction are not too severe. Sometimes care has to be taken to avoid that the fast return to thermal equilibrium of nuclei wipes out the effects of the intemuclear interactions that are sought through 2D spectroscopy. 

The use of sensors and detectors to continuously measure important chemical properties has significant analytical advantages. By providing a fast return of analytical information in a timely, safe, and cost-effective fashion, such devices offer direct and reliable monitoring of explosive compounds while greatly reducing the huge analytical costs and... 

Fast returns to initial conditions Higher cost (perhaps)... 

From the quantum yields of the direct cis-trans photoisomerization of 2,4-hex-adienes it is seen that a one-step conversion of the trans-trans isomer into the cis-cis isomer or vice versa does not occur. A common intermediate can therefore be excluded, and at least two different intermediates have to be assumed as indicated in Scheme 1 (Saltiel et al., 1970). In contrast to this singlet reaction with very fast return to S, the triplet reaction is characterized by intermediate lifetimes long enough to allow for interconversion. The result of the benzo-phenone-sensitized photoisomerization of 2,4-hexadienes is therefore in agreement with a common triplet intermediate for the isomerization of both double bonds (Saltiel et al., 1969). 

Considering small battery capacities, it becomes obvious that the number of cycles is reaching values of more than 250, which results in more than 5000 full cycles for a predicted calendar lifetime of 20 years. As lithium-ion battery systems are still comparably expensive such a configuration could make sense in terms of a fast return of investment but has only a comparably small influence on the self-consumption rate and the solar fraction of the annual consumption (Figure 13.4). 

Precoat discharges of modern design are operated with a separate drive for scraper advance and with a second drive for the scraper fast return motion. The advance speed is thus independent ofthe drum speed and continuously adjustable, within the framework of limits applying to the respective use (e.g. from 0.1 to 0.002 mm min ). The scraper advance is automatically shut off as soon as the preset minimum layer thickness is reached. In older designs, the scraper advance is mechanically regulated by rotation of the drum and operated in steps from 1/100 mm up to some tenths of a miUimetre per rotation. 

Swager et al. [144] used crown ether 3,4-disubstituted polythiophene to fabricate sensors for electron deficient organic compounds and alkali ions. The sensor device so fabricated showed high chemical reversibility and fast return to its original state in the absence of signal besides very good stability for longer exposure times for the electrode materials XI, XII, and Xm. 

Function/feature it remains inside the base of the lock it moves fast returning springs, it is limited by rotating movements with knockers, it makes cormection between the handle and the locking system. 

As for its functions, it is possible to observe in the current lock the following to ensure the oven total sealing provide relieve system, to serve as a stem for opening and closing of the oven. The new lock closing features include the functions of the current system and more to open the oven with a twist of the handle, for the right or for the left to assure a fast return of the handle after been moved. 

Fast return on investment Radical and dramatic change... 

Magnalux 304 is reportedly formulated to save time and labor and ensure a fast return to service. It can be applied in one coat for a dry film thickness of 14-16 mils, is fast drying and cures in two to three days. The product is also low in volatile organic compounds (VOCs), at fewer than 150 g/1. It is also easy to clean and disinfect, allowing tanks and vessels to he returned to service quickly. 

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