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The sensitivity *) is the derivative of the signal by the concentration (Eqs. 3.3-38, 45, 48). It should be as high as possible in order to reduce the detection limit and to enhance the precision. Ideally, a sample should give rise to a narrow line with a high peak intensity, and the spectrometer should only 'see' the spectral band at which y is at its maximum. This is possible with spectrometers which use tunable lasers as radiation sources for absorption spectroscopy or by using spectrometers with high resolution, e.g., for trace analyses of atmospheric gases. The line widths i n vibrational spectroscopy are a function of the measuring conditions and of the state of the sample. The natural line width of about I0 cm is not usually resolved. The Doppler effect at room temperature contributes 10 cm I . The contribution due to impacts and intermolecular interactions for a gas at 1 mbar is 10 cm and for 1 bar it is 10 cm '. The resulting line width in the spectra of crystals is of the order 1 - 5 cm and for a liquid it may reach 20 cm Fig. 3.3-16 shows that the line width increases as the pressure of a gas increases (even by adding an inert gas at constant partial pressure of the analyte). As a result of condensation of the gas to a liquid, the entire band is reduced to one line. Solidification further reduces the band width. Since the integral intensity remains constant, the intensity of the band maximum increases, and so does the sensitivity (Schrader et al., 1981). In short: Reducing the sample temperuture increases the sensitivity.

The resource adapter can be configured to provide appropriate transaction support. The valid values for transaction level are NoTransaction, Local Transaction and XATransaction. Here s an example:

To view the shared contacts list on your SPS server, log in to the SPS site using your web browser. On the left, click the Contacts link under Lists, as shown in Figure 29.1. Your browser displays the shared contacts list as shown in Figure 29.2.

After entering all this data, Figure 22.7 shows the confirmation screen. If you want, check the Download messages now box to download all the messages from the e-mail server. Thunderbird downloads messages again every 10 minutes, or you can click the Get Msgs button at any time in the main Thunderbird window. When you are all done, Thunderbird displays the mail user interface, shown in Figure 22.8.

The JavaHome project prints the location of the running JVM s home directory. Because this tool does not have a Window or Dialog to display the information, I describe how to build and run the application in the Xcode Console window. This provides a display for standard output. Follow these steps:

to carry out these techniques is covered in s 12 through 14, Scenarios, use cases, and essential use cases are helpful techniques for beginning to document the findings from the data-gathering sessions. Task analysis is a little more structured, but does not scale well.

It doesn t take a Java genius to work out that this application is fraught with pitfalls. Very little checking is going on with respect to the ID of the desired message to check that it is indeed in the range listed by the folder. In addition to this, the errorhandling is a little crude, simply allowing the exception to be thrown and caught by one try...catch block.

When your system administrator (or you) configured printers for your computer, one of those printers was defined as the default printer. If you are not sure which printer is your default in a Fedora Core or other Red Hat Linux distribution, type system-config-printer and look for the printer with the check by it. For other Linux distributions, check the CUPS Web-based interface to see how your printers are configured. Most graphical word processors, such as StarOffice Writer and OpenOffice.org Writer, let you choose a printer from those available. Some of the less sophisticated Linux utilities that run from the command line, however, use only the default printer. For example, dvips (to print a PostScript file) and groff -l (to print a troff/nroff file) automatically send the output to the default printer. As a regular user, you can override the default printer using the PRINTER environment variable. If the default printer on your computer is lp0, for example, and you want to print regularly to lp1, change your default printer by setting the PRINTER variable as follows: