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Changes in nucleic acid levels associated with improved germination performance of tomato seeds after low temperature presowing treatment
(1990-02)
Low temperature presowing treatment (LTPST) of tomato seeds, var. Moneymaker, increases their rate of germination. During this treatment there is a large increase in nucleic acid content, especially rRNA, within the seeds. ...
Knowledge-based systems in network management
(University of Hertfordshire, 1990)
Many applications of knowledge-based systems (KBS) in network management have been described, though few have seen practical use. Most work has been in the areas of network design and fault diagnosis, using consultative ...
The cool phase of the interstellar medium : Atomic gas
(Kluwer, 1990)
Microtubule dynamic instability: numerical simulation of microtubule transition properties using a Lateral Cap model
(1990)
We present a numerical formulation for the dynamic instability of microtubules involving the stabilisation of growing microtubules by a single layer of tubulin-GTP, with GTP hydrolysis effectively coupled to tubulin-GTP ...
An optical and near-infrared polarization survey of Seyfert and broad-line radio galaxies. 1 : statistical properties
(1990)
The present broad-band and near-IR flux density and polarization measurements of a sample of 71 Seyfert galaxies and three broad-line radio galaxies confirms earlier indications that the polarization of Seyferts is generally ...
An optical and near-infrared polarization survey of Seyfert and broad-line radio galaxies. 2 : the wavelength dependence of polarization
(1990)
We discuss the wavelength dependence (0.44-2.2 micron) of polarization of the sample of 71 Seyfert and three broad-line radio galaxies presented in Paper I. For four galaxies, 3A 0557-353, Fairall 51, IC 4329A and NGC 3753, ...
The odd couple or formal notations and the development of information systems
(University of Hertfordshire, 1990)
The development of information systems and the introduction of Formal Notations have tended to be taught as separate subjects. In this paper we hope to show that it is both possible and desirable to place Formal Notations ...
The optical and infrared-emission of blazars
(1990)
A polarization study is presented of 44 blazars and candidate blazars observed at optical and near-IR frequencies. The spectrum of the radiation is discussed in terms of shock acceleration models. Frequency dependence is ...