摘要:
A process for separating an anomeric mixture of alpha and beta 2-deoxy-2,2-difluoro-D-ribofuranosyl-1-alkylsulfonates by contacting the anomeric mixture with a solvent; heating; adding a countersolvent; and lowering the temperature.
摘要:
The present invention provides isotopically labeled oxazinocarbazole derivatives having a ring connecting position 8 (C-8) and position 9 (N-9), and more specifically, provides compounds of formula (I) wherein R1, R2, R3 and R4 are described herein. These compounds are useful in the diagnostic analysis of diseases wherein modulation of 5-HT activity is desired.
摘要:
An adaptive image acquisition system employing a hand-held optical scanner or camera is disclosed. The system includes an adaptive camera exposure control system to adjust the camera exposure time to the media's reflectivity characteristics. The system assembles a "filmstrip" of images from compressed video data, wherein redundant image data appearing in successive image frames has been removed. The system employs a correlation process between successive frames to identify the redundant frame information and determined the camera velocity. By adapting the correlation process to the velocity of the camera, the effects of variations in the velocity may be substantially eliminated.
摘要:
A computer system receives a number of different dependent variable data sets, all varying with respect to a single independent variable such as time, and displays a plot of each data set on a different one of a set of graphs, all of the graphs having conforming and preferably identical, aligned scales of the independent variable. The identical scales for the common independent variable are preferably in precise vertical alignment, which allows the viewer to more easily see relationships in the changes of the dependent variable data sets as the independent variable changes.
摘要:
An adaptive image acquisition system employing a hand-held optical scanner or camera is disclosed. The system includes an adaptive camera exposure control system to adjust the camera exposure time to the media's reflectivity characteristics. The system assembles a "film-strip" of images from compressed video data, wherein redundant image data appearing in successive image frames has been removed. The system employs a correlation process between successive frames to identify the redundant frame information and determine the camera velocity. By adapting the correlation process to the velocity of the camera, the effects of variations in the velocity may be substantially eliminated.