Lsd - Vl98
نویسندگان
چکیده
App © 19 for c obta Abstract Languages used for design activities in CAD software are usually textual languages akin to standard procedural programming languages such as Basic or C++. This creates a discontinuity between the drafting and solid modelling aspects of design, and the programming aspects which are becoming increasingly important as designers attempt to economise on their activities by building parametrised specifications. The declarative language LSD addresses this issue by applying visual programming to design. Here we present a formal model for objects in a design space and for operations on design objects. We also show how this model is integrated with LSD to provide a general mechanism for extending the language through the addition of new operations.
منابع مشابه
Effective GC-MS procedure for detecting iso-LSD in urine after base-catalyzed conversion to LSD.
A sensitive method is described to detect isolysergic acid diethylamide (iso-LSD) in urine. The compound was extracted from urine and converted to a C-8 carbanion by sodium ethoxide in ethanol. Protonation of the carbanion by water selectively produced LSD. The conversion of iso-LSD to LSD was almost quantitative (98%). The product was purified by solid-phase fractionation and acid-base separat...
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