Compromise frequency

Figure 2. Transient Raman spectra of Ni(PP) (60-80 ]iM) in pyrrolidine. Traces a) and b) were obtained with 406 nm excitation at high and low power, respectively, while traces c) and d) were generated with 420 nm excitation (which i.s a compromise frequency which resonantly enhances both species to some extent) at high and low power, respectively. For low power spectra the average laser power (at 10 Hz) was. 75-1.0 mW. The beam was only slightly focused onto the sample with a cylindrical lens. High power spectra were generated with 5-6 mW of average laser power sharply focused at the sample via a spherical lens. Spectra are the unsmoothed sum of 3-5 scans at 7-9 cm" spectral resolution.

This is called the compromise frequency because it lies between the natural frequencies of the two oscillators (Figure 8.6.8). 

A broad asymmetric peak makes the selection of the carrier position difficult since a compromise frequency must be selected to immediately saturate the greatest number of spins and then again during exchange with the other resonances. As the symmetry of the resonances in the sample improves (most likely through shimming) and the peaks become taller and narrower, the ideal presaturation position becomes evident. 

From the two equalities given in (6), we can observe that the time-frequency compromise expressed by (1) evolves within the changes of scale performed by the CWT. 

These values were ehosen since they were the best compromise between the possibility to provtde significant amplitudes of the cyclical pressure loading and the experimental apparatus limits. Infact, the cyclical pressure amplitude gets lower as the frequency gets higher. 

The number of accumulated scans and nominal resolution have been tested in order to ensure a compromise between sensitivity and sampling frequency. 

Equipment used to process, store, or handle highly hazardous chemicals must be designed constructed, installed and maintained to minimize the risk of release. A systematic, scheduled, test and maintenance program is preferred over "breakdown" maintenance " that could compromise safety. Elements of a mechanical integrity program include 1) identification and categorization of equipment and instrumentation, 2) documentation of manufacturer data on mean time to failure, 3 ) test and inspection frequencies, 4) maintenance procedures, 5) training of maintenance personnel, 6) test criteria, and 7) documentation of test and inspection results. 

Lick Observatory. The success of the LLNL/AVLIS demonstration led to the deployment of a pulsed dye laser / AO system on the Lick Observatory 3-m telescope (Friedman et al., 1995). LGS system (Fig. 14). The dye cells are pumped by 4 70 W, frequency-doubled, flashlamp-pumped, solid-state Nd YAG lasers. Each laser dissipates 8 kW, which is removed by watercooling. The YAG lasers, oscillator, dye pumps and control system are located in a room in the Observatory basement to isolate heat production and vibrations from the telescope. A grazing incidence dye master oscillator (DMO) provides a single frequency 589.2 nm pulse, 100-150 ns in length at an 11 kHz repetition rate. The pulse width is a compromise between the requirements for Na excitation and the need for efficient conversion in the dye, for which shorter pulses are optimum. The laser utilizes a custom designed laser dye, R-2 perchlorate, that lasts for 1-2 years of use before replacement is required. 

Because the wavelength of the RF signal is of the order of the substrate dimensions (3 m at 100 MHz), it can be expected that uniform deposition is more difficult at these high frequencies [477]. In fact, a practical optimum frequency around 60-70 MHz is used [478, 479], which provides a good compromise between high deposition rate and attainability of uniform deposition. Further, the use of a distributed RF electrode network where all nodes have identical amplitude and phase improves the homogeneity of deposition [480]. 

As with any computational method, it is important that the parameters that govern operation of the method are chosen appropriately. In the GCS, one of the key parameters is the frequency with which new units are added. Each time a unit is added, the map should be given sufficient time to adjust all the unit weights so that the resulting map is a fair representation of the data. If this is not done, new units may be added in inappropriate positions, which will compromise the quality of the map. 

Fraud, of course, is a different issue, but this kind of fraud couldn t happen—or at least, couldn t happen with such ease and frequency— in a world of paper-based records. With so much information floating about in cyberspace, and so much technology that can record and (55) observe, our privacy has been deeply compromised. 

In spite of its current popularity in the pharmaceutical industry, the use of two control groups is opposed by some statisticians on the grounds that a significant difference between the two groups may indicate that the study was compromised by excessive, uncontrolled variation. Haseman et al. (1986), however, analyzed tumor incidence data from 18 color additives tested in rats and mice and found that the frequency of significant pairwise differences between the two concurrent control groups did not exceed that which would be expected by chance alone. 

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