Experiments indicate that eggs and embryos of the North Sea sea urchin Echinus esculentus are excellent material to investigate the regulation of protein synthesis before and after fertilization. The dormant egg contains several proteins which are absent from embryos. Such additional proteins have been detected on the small ribosomal subunits, in the salt wash of whole ribosomes, and associated...

Increased scattering by seawater relative to that by pure water is primarily due to additional fluctuation of the refractive index contributed by sea salts. Salts with different ionic weight and sizes, while barely affecting the scattering that is due to density fluctuations, have a significant effect on the scattering that is due to concentration fluctuations. And this explains the major diffe...

The hydrological connectivity between the salt marsh and the sea was partially restored in a Mediterranean wetland containing isolated ponds resulting from former salt extraction and aquaculture activities. A preliminary assessment provided evidence that ponds farther from the sea hosted very large numbers of the endangered Spanish toothcarp, Aphanius iberus, suggesting that individuals had bee...

[1] Aerosols act as cloud condensation nuclei for cloud water droplets, with changes in aerosol concentrations having significant impacts on the corresponding cloud properties. An increase in aerosol concentration may lead to an increase in CCN, with an associated decrease in cloud droplet size for a given cloud liquid water content. Smaller droplet sizes may then lead to a reduction in precipi...

Parameterization of sea-salt optical properties and physics of the associated radiative forcing J. Li, X. Ma, K. von Salzen, and S. Dobbie Canadian Centre For Climate Modelling and Analysis, Science and Technology Branch, Environment Canada, University of Victoria, Victoria, British Columbia, Canada Inst. for Atmospheric Science, School of Earth and Environment, Univ. of Leeds, Leeds, UK Receiv...

As more resources are directed toward reverse time migration, an accurate velocity model, including strong reflectors, is necessary to form a clear image of the subsurface. This is of particular importance in the vicinity of salt, where singly scattered waves are often not ideal for imaging the salt flanks. This has led to interest in processing doubly scattered waves (also called duplex or pri...

OBJECTIVE To investigate iodine status and fish consumption of schoolchildren living in the Red Sea and White Nile regions of Sudan. DESIGN Cross-sectional study to determine urinary iodine concentration, visible goitre rate, iodine content of salt and fish consumption. SETTING Port Sudan (Red Sea) and Jabal Awliya (White Nile), Sudan. SUBJECTS Two hundred eighty (n 280) children aged 6-1...

The ability of West Indian manatees (Trichechus manatus) to move between fresh and salt water raises the question of whether manatees drink salt water. Water turnover rates were estimated in captive West Indian manatees using the deuterium oxide dilution technique. Rates were quantified in animals using four experimental treatments: (1) held in fresh water and fed lettuce (N=4), (2) held in sal...