Frequently Asked Questions




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How can we select all the simulated data of the line intensity text area in a JDK1.1.8 applet?



(1) PC-Windows


Select

(1) Double-click inside the text area with the left-hand mouse button.
(2) Press the CTRL and C keys.

Paste

(1) Move the cursor to another area of the applet.
(2) Press the CTRL and V keys.


(2) PC-Windows XP


Select

(1) Move the cursor inside the text area.
(2) Press the right-hand mouse button.
(3) Choose the pop-up menu item "select all".
(4) Press the right-hand mouse button again.
(5) Choose the pop-up menu item "copy".

Paste

(1) Move the cursor to another area of the applet.
(2) Press the right-hand mouse button.
(3) Choose the pop-up menu item "paste".


(3) PC-Windows 95


Select

(1) Move the cursor to the beginning of the text area.
(2) Move to the end of the data with the scroll bar of the panel.
(3) Press the shift key.
(4) Put the cursor at the end of the text area.
(5) Press the left-hand mouse button.
(6) Press the CTRL and C keys.

Paste

(1) Move the cursor to another area of the applet.
(2) Press the CTRL and V keys.


(4) Netscape 7 in Unix
Mozilla 1.6 in Red Hat Linux 8
Konqueror 3 in Red Hat Linux 8


Select

(1) Move the cursor to the beginning of the text area.
(2) Move to the end of the data with the scroll bar of the panel.
(3) Press the shift key.
(4) Put the cursor at the end of the text area.
(5) Press the left-hand mouse button.

Paste

(1) Move the cursor to another area of the applet
(2) Press the middle mouse button.


(5) Mac


Select

The same process as with Netscape 7 in Unix.

Paste

Drag the selected data into another area of the applet.


How can we reach the NMR references of a nucleus?

Some references are on web pages, but most of them are in a mySQL data base.

There are three approaches to reach them:

  1. from the right-hand column of the home page, but some nuclei are missing, then via the MORE link to access to the data base;
  2. via the Periodic Table where all the quadrupole nuclei with half-integer spins are available;
  3. with the internal search engine via the SEARCH NMR references in a data base link to access to the data base.

This search engine differs with that available on the upper right corner of each web page because the latter searches data on web pages.

What are the restrictions for MAS experiments due to the STATIC first-order quadrupole interaction during the pulses?

The pulse lengths should be short enough so that the MAS rotor could be considered to be static during the application of the pulses.

Why the second-order quadrupole interaction is not taken into account during the pulses?

If this interaction is present during the pulses, it means that it must be present during the acquisition of the FID. In this case, the lineshape analysis is applicable to extract the quadrupole parameters. Since the aim of the nutation nmr is to extract these parameters from a series of featureless lineshapes, which means that the second-order quadrupole interaction could be neglected during the pulses.


 
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