Browsing Research publications by Issue Date
Now showing items 41-60 of 23161
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Effects of root-infecting fungi on wheat transport processes and growth
(1978)Aurtobasidium bolleyi and Gaeumannomyces graminis damaged transport processes and decreased shoot growth of sand-grown wheat plants only if they colonized the stele and disrupted the phloem of most roots. One week after ... -
Short-pulse oscillator for SHIVA
(1978)An actively mode-locked and Q-switched Nd:YAG laser has been developed with pulse widths adjustable from ~100 ps to 1 ns, stability better than ±5%, and a single pulse energy of more than 200 μJ over this range -
Optical rise-time measurements on KD*P transmission-line Pockels cells
(1978)A technique has been developed for determining the optical-transmission rise times of subnanosecond switching KD*P electro-optic modulators. Optical streak-camera data with 15-psec overall resolution and 30-psec resolution ... -
Suppression of virus induced local lesions in plasmolysed leaf tissue
(1978-05-01)It has been demonstrated previously that protoplasts derived from leaves which normally respond in vivo to virus inoculation, with the formation of necrotic local lesions show no such response when inoculated in vitro [1]. ... -
Alterations in the soluble protein patterns of tobacco and cowpea leaves following inoculation with tobacco necrosis virus
(1978-06-01)Changes in the soluble protein composition of both tobacco and cowpea leaves following inoculation with tobacco necrosis virus (TNV R/1 : 1.5/19 : S/S : S/Fu [1]) have been investigated by the techniques of disc-electrophoresis. ... -
Imagination in a Christmas Carol
(1979) -
Detection of a bright ridge in the 2.2 MU-M emission of M82
(1979)Photometric scans through the central region of M82 with a resolution of 6 arcsec reveal that the 2.2-micron emission source has a compact ridge structure which is approximately aligned + or - 10 deg with the major axis ... -
Low-dose electron image reconstruction of negatively stained contractile phage sheath from Bacillus subtilis (PBS-Z)
(1979)The structure of the contractile sheath of the defective phage from B. subtilis (PBS-Z) has been investigated by low-dose electron microscopy and image reconstruction. The extended and contracted sheath particles were ... -
The effect of increased levels of endogenous nerve growth factor on mouse sympathetic ganglia
(1979)The present experiments showed that treatment of mice with a range of doses of testosterone propionate led to a significant increase in weight of the superior cervical ganglia (SCG). In all cases this was accompanied by ... -
High-speed scanning laser diffractometer
(1979)A high-speed laser diffractometer is described which employs a novel scanned array or optical light guides to record the angular intensity variation of light scattered radially by a particle throughout an arc of 180 degrees ... -
Analysis of histones from the yeast Saccharomyces carlsbergensis
(1979-02)Basic chromosomal proteins were isolated from the chromatin of the yeast Saccharomyces carlsbergensis by extraction with H2SO4 and were purified by ion-exchange chromatography. Electrophoresis of the purified fraction on ... -
Scanning diffractometer for the rapid analysis of microparticles and biological cells
(1979-05-01)A laser diffractometer is described which employs a novel scanned array of optical light guides to record the angular intensity variation of light scattered radially by a particle throughout an arc of 180° in approximately ... -
IR photometry and polarimetry of 2A0311−227
(1980)The X-ray source 2A0311 − 227 has recently been identified with a star whose spectrum and polarization properties show it to be an AM Herculis type binary. These binaries are thought to consist of a synchronously rotating ... -
An electron microscopic investigation of the structure of Alfalfa mosaic virus
(1980)Minimum beam electron microscopy and the three-dimensional reconstruction technique were used to analyse negatively stained Alfalfa mosaic virus particles and polymers of reassembled coat protein. Three strains of the virus ... -
The IR variability of SS433
(1980)We report here the results of a one-year monitoring programme of SS433 at IR and visual wavelengths. The most striking feature of these observations is the near constancy of the IR colours while the source's flux varies ... -
Attention bands: Some implications for categorical judgement
(1980-05-01)It is shown that results of categorical judgement experiments cannot simultaneously conform to a single process signal detectability model and to the recently proposed two process attention band model. Since there is ...