We describe a new species of giant spitting cobra, Naja ashei sp. nov., from eastern and north-eastern Africa. The species was previously regarded as a colour phase of the black-necked spitting cobra, N. nigricollis. However, mtDNA sequence data show it to be more closely related to N. mossambica than N. nigricollis. The new species is diagnosable from all other African spitting cobras by the p...

Acetylcholinesterase purified from cobra (Naja naja) venom exhibits a serotonin-sensitive aryl acylamidase activity. Both acetylcholinesterase and aryl acylamidase activities co-eluted in column chromatographic procedures (Sephadex G-75 and Zinc-Sepharose), co-migrated on polyacrylamide gel electrophoresis, co-immunoprecipitated by anti-snake venom antibody and showed the same heat denaturation...

Both sea snakes and cobras have venoms containing postsynaptic neurotoxins. Comparison of the primary structures indicates many similarities, especially the positions of the four disulfide bonds. However, detailed examination reveals differences in several amino acid residues. Amino acid sequences of sea snake neurotoxins were determined, and then compared to cobra neurotoxins by computer model...

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Orthorhombic crystals of cardiotoxin-analogue III from Taiwan cobra have been grown from 2-methyl-2,4-pentanediol solution. The space group is P222 with 2 molecules/asymmetric unit. Several different crystal forms of phospholipase A2 from Taiwan cobra have been produced with or without Ca2+ ion. One of them, grown from 30 mM sodium cacodylate buffer (pH 6 to 7) and 30% 2-methyl-2,4-pentanediol ...

This document describes a new approach that explores the use of Semantic Web languages in building an architecture for supporting context-aware systems. This new architecture called Context Broker Architecture (CoBrA) differs from other architectures in using the Web Ontlogy Language OWL for modeling ontologies of context and for supporting context reasoning. Central to our architecture is a br...

The complex chemical nature of Indian cobra (Naja naja) venom was indicated by Ganguly & Malkana (1936) and Ganguly (1937), who reported its percentage composition as follows: total protein 87-56, globulin 20*31, albumin 39-69, primary proteose 11 31, secondary proteose 16-81. In addition to proteins, the venom was found to contain cholesterol, phospholipins, inorganic substances and colouring ...

Computing is moving toward a pervasive context-aware environment in which agents with limited resources will require external support to help them become context-aware. In this paper, we describe an agent based architecture called Context Broker Architecture (CoBrA) to help these agents to acquire, reason about and share context knowledge. A key component in our architecture is an explicit cont...

We describe Context Broker Architecture (CoBrA) – a new architecture for supporting context-aware systems in smart spaces. Our architecture explores the use of Semantic Web languages for defining and publishing a context ontology, for sharing information about a context and for reasoning over such information. Central to our architecture is a broker agent that maintains a shared model of the co...