A synthesis of the early life history of the anglerfish, Lophius piscatorius (Linnaeus, 1758) in northern British waters   总被引：1，自引：0，他引：1  

Hislop  John R.G.; Gallego  Alejandro; Heath  Michael R.; Kennedy  Fiona M.; Reeves  Stuart A.; Wright  Peter J. 《ICES Journal of Marine Science》2001,58(1):70-86

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Multidrug resistance in the embryos and larvae of the mussel Mytilus edulis.     

I McFadzen  N Eufemia  C Heath  D Epel  M Moore  D Lowe 《Marine environmental research》2000,50(1-5):319-323

Cells exhibiting the multidrug resistance (MDR) phenotype demonstrate a decreased intracellular drug accumulation due to an active outward transport and decreased intracellular flux. This study demonstrates the inhibition of MDR in mussel (Mytilus edulis) embryos and larvae based on a simple bioassay. The development of embryos was assessed and abnormalities identified at key stages of development, including gastrulation, trochophore and prodissoconch stages. The incidence of developmental abnormalities was significantly increased in the presence of vinblastine, MMS, chloroquine, mitomycin-C, cadmium chloride and colchicine, compared to clean seawater. Consistently, there was a further increase in the number and severity of deformities observed when each toxin was added in the presence of verapamil. Larval growth was also significantly impaired in the presence of verapamil. Increased accumulation of fluorescent MDR dyes, such as rhodamine B, has been measured and shown to be verapamil sensitive. This bioassay encompasses a period of intense cellular activity during which the impairment of a number of critical processes results in abnormal growth and development.  相似文献   

PLANETARY HABITABILlTY STUDIES GO UNDERGROUND     

Martin J. Heath  L.R. Doyle 《地学学报》1996,8(3):301-302

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The evolution of adiabatic density perturbations     

D. J. Heath 《Astrophysics and Space Science》1978,59(1):153-163

The evolution of adiabatic perturbations has been studied in Friedmann-Lemaître universes containing a mixture of non-interacting matter and radiation. The differential equation governing the growth of infinitely long adiabatic fluctuations has been derived. In the case of the Einstein-de Sitter universe, an exact solution is given to this differential equation.  相似文献   

The Nimbus-4 Backscatter Ultraviolet (BUV) atmospheric ozone experiment — tow years' operation     

Heath  Donald F.  Mateer  Carlton L.  Krueger  Arlin J. 《Pure and Applied Geophysics》1973,106(1):1238-1253

Summary In April 1970 the Backscatter Ultraviolet (BUV) experiment was placed into orbit aboard the Nimbus-4 satellite. This double monochromator experiment measures ultraviolet terrestrial radiance at twelve discrete wavelengths between 2550 Å and 3400 Å. Approximately 100 scans covering a 230 km square are made between terminator crossings on the daylight side of the earth. A colinear photometer channel with the same field of view is used to derive the Lambert reflectivity of the lower boundary of the scattering atmosphere. The extraterrestrial solar irradiance is measured at the northern terminator. The instrument has currently produced almost three years of nearly continuous data which are being used to infer the high-level ozone distribution and total ozone on a global basis. The high-level ozone data have been verified by independent coincident rocket ozone soundings, and the total ozone values show good agreement with Dobson spectrophotometer determinations as well as those made with the Infrared Interferometer Spectrometer also on Nimbus-4. An increase has been observed in equatorial radiance at 2550 Å relative to 2900 Å, which seems to indicate that the amount of ozone in the upper stratosphere is related to the eleven-year solar cycle.  相似文献   

Generation of the M4 tide in Cook Strait,New Zealand     

Dr. Ronald Allan Heath 《Ocean Dynamics》1982,35(6):261-270

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