Etch Rate Dependence on Crystal Orientation for Lithium Niobate

IEEE Internatinal Ultrasonics Symposium, 200

Diversity among the coat proteins of luteoviruses associated with chickpea stunt disease in India

Chickpea stunt is an important virus disease of chickpea in the Indian subcontinent which is thought to be caused by infection with a luteovirus. Samples of diseased chickpea plants were collected from different chickpea growing regions of India and analysed with a panel of monoclonal antibodies to potato leafroll, beet western yellows and barley yellow dwarf (RPV strain) luteoviruses. The results suggested that more than one luteovirus was present in chickpea crops near ICRISAT Asia Center, Hyderabad. Aphid transmission tests resulted in the separation of two distinct isolates from these samples. One of them (isolate L) was more efficiently transmitted by Myzus persicae than the other (isolate IC). Nucleotide sequence analysis of DNA obtained by reverse transcription-polymerase chain reaction (RT/PCR) amplification revealed that the amino acid sequence of the coat protein of isolate L was 94% identical to that of beet western yellows virus, whereas the coat protein sequence of isolate IC was 82% identical to that of isolate L and 80% identical or less to those of the coat protein of other luteoviruses. Using newly designed “universal luteovirus primers”, a minor sequence variant of isolate IC, which was 96% identical to it in part of the coat protein gene, was detected in the same location during the next season. Only isolate IC could be detected in samples from other locations by either serological or nucleotide sequence analysi

Exercices de mathématiques pour le premier cycle — Volume 2 : Analyse

2e éditio

La navigabilité de l'Atlantique au Moyen Âge selon les universitaires et selon les marins

Randies W.-G.-L. La navigabilité de l'Atlantique au Moyen Âge selon les universitaires et selon les marins. In: Actes des congrès de la Société des historiens médiévistes de l'enseignement supérieur public, 17ᵉ congrès, Nantes, 1986. L'Europe et l'Océan au Moyen Age. Contribution à l'Histoire de la Navigation. pp. 211-216

Task Modelling Using Situation Calculus

The main aim of this paper is to demonstrate the effectiveness of using Situation Calculus in Task Modelling. The motivation for this approach is to enable a runtime adaptable task model to be used in the provision of the most appropriate user interfaces, according to circumstance. The task model and meta-reasoning model may both be specified in the Situation Calculus, which permits reasoning to occur over couterfactual situations and without exhaustive state enumeration. A task flow editor with input from the formal model is demonstrated and the approach is described using a medical process case study.Anglai