Physiological system modelling

Computer graphics has a major impact in our day-to-day life. It is used in diverse areas such as displaying the results of engineering and scientific computations and visualization, producing television commercials and feature films, simulation and analysis of real world problems, computer aided design, graphical user interfaces that increases the communication bandwidth between humans and machines, etc Scientific visualization is a well-established method for analysis of data, originating from scientific computations, simulations or measurements. The development and implementation of the 3Dgen software was developed by the author using OpenGL and C language was presented in this report 3Dgen was used to visualize threedimensional cylindrical models such as pipes and also for limited usage in virtual endoscopy. Using the developed software a model was created using the centreline data input by the user or from the output of some other program, stored in a normal text file. The model was constructed by drawing surface polygons between two adjacent centreline points. The software allows the user to view the internal and external surfaces of the model. The software was designed in such a way that it runs in more than one operating systems with minimal installation procedures Since the size of the software is very small it can be stored in a 1 44 Megabyte floppy diskette. Depending on the processing speed of the PC the software can generate models of any length and size Compared to other packages, 3Dgen has minimal input procedures was able to generate models with smooth bends. It has both modelling and virtual exploration features. For models with sharp bends the software generates an overshoot

Crystal and Molecular Structure of Desmodin

The crystal structure of the title compound has been determined from X-ray diffraction. The compound crystallizes from benzene in the orthorhombic system, space group P212121, with unit cell parameters: a = 8.485(2), b = 9.816(2), c = 22.597(4) A, Z = 4, V = 1881.9(7) A3. The structure was determined by direct methods and refined to a final R-factor of 0.04. Six membered rings B and E are planar. Ring A and ring C are in slightly distorted sofa conformation. Ring D is in envelope conformation. The structure is stabilised by weak intermolecular C-H...O hydrogen bond

Tricoccin R6

The X-ray crystal structure of the title compound, $(C_{25}H_{28}O_8)$, has been determined. In the structure, both the terminal five-membered rings (A and F) are planar. The fused five-membered rings C and E are in envelope conformations, and ring B is in a slightly distorted half-chair conformation. The six-membered ring D is in a slightly distorted sofa conformation. The structure is stabilized by $O-H^{...}O$ hydrogen bonds and $C-H^{...}O$ inter- and intramolecular interactions