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Now showing items 11-20 of 60
Creative mathematics: Do SAT-M sex effects matter?
(1988-06-01)
Dark matter in the dwarf galaxy II Zwicky 40
(1988-03-01)
H I observations of the blue compact dwarf galaxy II Zwicky 40 at high angular resolution reveal the presence of two kinematical systems. The H I structure and kinematics can be understood in terms of two interacting H I ...
Characterisation of multimeric DNA forms associated with tomato golden mosaic virus infection
(1988-03-01)
Homodimeric and trimeric double-stranded DNA forms of both components of the genome of the geminivirus, tomato golden mosaic virus have been isolated from infected Nicotiana tabacum plants and characterised.
Dispersal of Rhynchosporium secalis conidia from infected barley leaves or straw by simulated rain
(1988-02-29)
Simulated rain (mean drop diameter c. 1 or 3 mm) was allowed to fall for 10 – 15 min on to barley leaves or straw infected by Rhynchosporium secalis (leaf blotch). The leaves were supported on a mesh through which run-off ...
Nonlinear effects on pulsed laser propagation in the atmosphere
(1988-02)
Nonlinear effects on the propagation of a high power pulsed laser beam through the earth’s atmosphere are modeled. Stimulated Raman scattering in relatively modest power laser beams is estimated to be very significant when ...
Stages in the progress of eyespot epidemics in winter wheat crops
(1988-02)
The temporal progress of eyespot (Pseudocercosporella herpotrichoides) epidemics in winter wheat crops is considered in four stages: leaf sheath lesion establishment, leaf sheath penetration, stem lesion establishment and ...
The electromagnetic field in rotating coordinates
(1988)
The electromagnetic field equations in rotating coordinates obtained by various authors, are based on incorrect expressions for the divergence and curl operators and the electromagnetic spatial vectors. This is a serious ...
Infrared polarimetry of dark clouds. II : Magnetic field structure in the Rho Ophiuchi dark cloud
(1988)
K-band polarimetry of 20 sources embedded within the densest region of the Rho Oph dark cloud has been obtained. The degree of polarization ranges from 1.1 to 7.4 percent, and the position angles have a bimodal distribution, ...
Infrared reflection nebula in W75N
(1988)
A new infrared reflection nebula is identified in the W75N region. The K-band polarization map shows a centrosymmetric pattern of the vectors extending over a region 2 arcmin in size, with large values of degrees of ...