FLATLAND system

The FLATLAND system provides a model, on the other hand, for how one graphics system can, in principle, utilize the raw data from a variety of information sources, including operator input, public... 

R. M. Malzbender, Freezing Flatland Analog Simulation of a Phase Transition in a Classical Two-Dimensional System, Ph.D. thesis. University of Colorado, Boulder, 1990. 

FLATLAND takes its name from the book FT.ATLAND A Romance of Many Dimensions written by Edwin A. Abbott in 1884. In his book, Abbott depicts his world through the eyes of 19th century Victorian satire, imagining a land of two dimensions. Likewise, the depiction of our three-dimensional world of chemistry in the two dimensions of the printed page is the aim of the FLATLAID system, developed by the author for use on a VAX computer operating under the VliS environment. 

FLATLAND also has its own structure and structure fragment libraries (see Figure 3). Structures and reaction scheme "templates" can be used over and over while drawing to add whole predrawn molecular or scheme sections to the developing scheme. The libraries, both public (system wide) and private (user owned), are dynamic and can be customized easily and continually. 

FLATLAND is the first chemical graphics system ever designed specifically to work concurrently with other systems. Information can be transferred back and forth between systems, and FLATLAND can be instructed to wait for other processes to call for graphics. 

Other software that has been recently integrated into SOCRATES includes FLATLAND, a package designed to incorporate chemical structures and schemes into word processing systems, and 3D-SEARCH, which extends our searching capability into databases with 3-D structure coordinates (e.g., the Cambridge Crystal Structure... 

A beginning has been made on the estimation of adsorbate concentrations from the isotherms of pure vapors, assuming that the adsorbate is ideal and follows an analog of Raoult s law [49, 74, 75]. Some systems follow such a law, such as ethane-propane-carbon black [26] and -butane-ethane-molecuiar sieves [29]. Others do not. Thus, in the case of benzene-n-heptane-silica gel, adsorbates deviate negatively from ideal solutions, whereas in the vapor-liquid equilibria for these hydrocarbons the deviation is positive [90]. An excellent review of the thermodynamics is available [97], including the concept of two-dimensional equations of state for the adsorbate layer, strongly reminiscent of Abbott s Flatland [1],... 

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