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Now showing items 11-20 of 59
Stability and expression of bacterial genes in replicating geminivirus vectors in plants
(1989-04-11)
Bacterial beta-glucuronidase (gus) and neomycin phosphotransferase (neo) genes were introduced into coat protein replacement vectors based on DNA A of tomato golden mosaic virus (TGMV). Recombinant gus and neo vectors up ...
The behaviour of tomato golden mosaic virus DNA in cultured cells isolated from systemically infected tobacco leaves
(1989-03)
When callus tissue was cultured from leaf pieces taken from a Nicotiana tabacum cv. Xanthi nc. plant systemically infected with tomato golden mosaic virus (TGMV), TGMV-specific DNA persisted for up to 6 months in culture. ...
Geographical approach to international tourism
(1989-03-01)
Dr S.J. Page of the Department of Geography, Christ Church College, Canterbury, reports on the proceedings of a conference organized by the International Geographical Union (IGU) Commission of Tourism and Leisure, 13-20 ...
Vertical dispersal of plant pathogens by splashing. Part II : experimental study of the relationship between raindrop size and the maximum splash height
(1989-03)
This paper describes a simple experimental test of the theoretical relationship between raindrop diameter and maximum splash height proposed by Walklate (1989). This relationship contains two empirical parameters to model ...
HARP: A Parallel Pipelined RISC Processor
(1989)
HARP (the Hatfield RISC processor) is a reduced instruction set processor being developed at Hatfield Polytechnic, UK. The major aim of the HARP project is to develop a RISC processor capable of a sustained instruction ...
Spectropolarimetry of the 3-micron ice feature in molecular clouds. II : GL 2591, GL 2136, W 33A and Elias 29 (Rho Ophiuchi dark cloud)
(1989)
Spectropolarimetric observations in the 3-micron ice band are presented for the infrared sources GL 2591, GL 2136, W 33A and Elias 29 (Rho Ophiuchi dark cloud). Some continuum polarization measurements between 1.2 and 5.0 ...
A simple formulation of microtubule dynamics: quantitative implications of the dynamic instability of microtubule
(1989)
A simple formulation of microtubule dynamic instability is presented, which is based on the experimental observations by T. Horio and H. Hotani of coexisting, interconverting growing and shrinking microtubules. Employing ...
The positive fixed points of Banach lattices
(1989)
Let Z be a Banach lattice endowed with positive cone C and an order-continuous norm j.j . Let G be a left-amenable semigroup of positive linear endomorphisms of Z . Then the positive fixed points Co of Z under G form a ...
A Lateral Cap model of microtubule dynamic instability
(1989)
The co-existence and interconversion of growing and shrinking microtubules have been termed ‘dynamic instability’, and have been directly observed to occur under a variety of conditions in vitro and in vivo. Previous ...