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  • Lisp  (1)
  • Models, Biological
  • Periplaneta americana
  • Springer  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 172 (1993), S. 359-368 
    ISSN: 1432-1351
    Keywords: Acetylcholine receptors ; Muscarinic ; Nicotinic ; Cockroach ; Periplaneta americana
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The effects of a number of cholinergic agonists and antagonists have been examined on the cell body of the fast coxal depressor (Df) of the cockroach Periplaneta americana using voltage-clamp techniques. Acetylcholine (ACh), when applied to this neurone voltage-clamped at its normal resting potential, results in the generation of an inward current through the activation of receptors which are blocked by α-bungarotoxin (α-bgt). At more depolarized membrane potentials acetylcholine induces an inward current which is strongly voltage-dependent and which is insensitive to α-bgt. An α-bgt-resistant current is also induced by the application of a number of cholinergic agonists. In order of potency these are: decamethonium〉oxotremorine = McN-A-343 = (+)-muscarine = arecaidine propargyl ester 〉nicotine 〉ACh. This α-bgt-resistant response to cholinergic agonists is blocked by a range of antagonists. In order of potency these are : decamethonium 〉pirenzipine 〉quinuclidinyl benzilate = atropine = p-f-hexahydro-sila-difenidol = dexetimide 〉scopolamine = methoctramine. The receptors mediating this response have been termed ‘mixed cholinergic’ due to their sensitivity to both nicotinic and muscarinic ligands. Pharmacological similarities between these ‘mixed’ receptors and binding components found in high speed supernatant fractions of insect nervous tissue are discussed.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-0557
    Keywords: Scheme ; Lisp ; programming languages
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract The report gives a defining description of the programming language Scheme. Scheme is a statically scoped and properly tail-recursive dialect of the Lisp programming language invented by Guy Lewis Steele, Jr. and Gerald Jay Sussman. It was designed to have an exceptionally clear and simple semantics and few different ways to form expressions. A wide variety of programming paradigms, including imperative, functional, and message passing styles, find convenient expression in Scheme. The introduction offers a brief history of the language and of the report. The first three chapters present the fundamental ideas of the language and describe the notational conventions used for describing the language and for writing programs in the language. Sections 5 and 6 describe the syntax and semantics of expressions, programs, and definitions. Section 7 describes Scheme's built-in procedures, which include all of the language's data manipulation and input/output primitives. Section 8 provides a formal syntax for Scheme written in extended BNF, along with a formal denotational semantics. An example of the use of the language follows the formal syntax and semantics. The report concludes with a list of references and an alphabetic index and is followed by a short list of clarifications and corrections.
    Type of Medium: Electronic Resource
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