نتایج جستجو برای: marine transport
تعداد نتایج: 363766 فیلتر نتایج به سال:
S OF PAPERS AT THE SIXTY-SEVENTH ANNUAL MEETING OF THE SOCIETY OF GENERAL PHYSIOLOGISTS The Enigmatic Chloride Ion: Transport, Regulation, and Roles in Physiology Marine Biological Laboratory Woods Hole, Massachusetts
Through the fixation of atmospheric nitrogen and photosynthesis, marine diazotrophs play a critical role in the global cycling of nitrogen and carbon. Crocosphaera watsonii is a recently described unicellular diazotroph that may significantly contribute to marine nitrogen fixation in tropical environments. One of the many factors that can constrain the growth and nitrogen fixation rates of mari...
F o r a s n a M a r a " to undertake, to coordinate , to promote and assist in marine research and development and to provide such services related to marine research and development that, in the opinion of the Institute, will promote economic development and create employment, and protect the marine environment ". The Maritime INTERREG Series was established to promote the dissemination of res...
Unlike virtually any other cells in the human body, neurons are tasked with the unique problem of transporting important factors from sites of synthesis at the cell bodies, across enormous distances, along narrow-caliber projections, to distally located nerve terminals in order to maintain cell viability. As a result, axonal transport is a highly regulated process whereby necessary cargoes of a...
this study examines the transport of seventeen heavy metals between the isipingo estuary andthe adjacent sea. results demonstrate variability of fluxes in terms of prevalence, concentration and seasonality.summer neap and spring tides had approximately twice the number of heavy metals compared to winter andspring seasons. spring and winter seasons yielded higher concentrations and a greater num...
[1] Micro-plastic marine debris is widely distributed in vast regions of the subtropical gyres and has emerged as a major open ocean pollutant. The fate and transport of plastic marine debris is governed by poorly understood geophysical processes, such as ocean mixing within the surface boundary layer. Based on profile observations and a one-dimensional column model, we demonstrate that plastic...
We present a global dioxin model that simulates one year of atmospheric emissions, transport processes, and depositions to the earth's terrestrial and marine habitats. We map starting emission levels for each land area, and we also map the resulting deposits to terrestrial and marine environments. This model confirms that 'hot spots' of deposition are likely to be in northern Europe, eastern No...
The knowledge about environmental sensitivity of the marine regions to radionuclide release can be used for the development of response strategies and improvement of design-maker systems. The present results are based on the consequences analysis after potential Russian submarine accident involving a modern vessel. The radioecological consequences are based on modelling of potential releases of...
Introduction and background The presence of microplastic particles (<5mm, MP) in the environment is a problem of growing concern. While research has focused on MP occurrence and impacts in the marine environment, very little is known about their release on land, storage in soils and sediments and transport by run-off and rivers (Nizzetto, 2016). Especially the transport behaviour with involved ...
Discharges from shipping are estimated to account for about 20% of global discharges at sea. The protection of the marine environment can be greatly enhanced by reducing these discharges of ship generated waste and cargo residues into the sea. Achieving zero-waste in maritime transport is one of the Commission's policy goals, as set out in the Commission Communication on strategic goals and rec...
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