Water ventilation

Fig. 10-8 The pathways followed by the water ventilating the main oceanic thermocline. (Reproduced with permission from W. S. Broecker and T.-H. Peng (1982). Tracers in the Sea," p. 440, Eldigio Press, Palisades, NY.)... 

Kolok, A.S. Huckins, J.N. Petty, J.D. Oris, J.T. 1996, The role of water ventilation and sediment ingestion in the uptake of benzo[a]pyrene in gizzard shad (Dorosoma cepedianum). Environ. Toxicol. Chem. 10 1752-1759. 

Figure 9.1 illustrates the processes of chemical uptake and elimination via the respiratory surface for fish. These processes result from the combination of the water ventilation rate, the rate of chemical permeation across the membranes of the respiratory surface, and the rate of distribution of the chemical within the organism. 

Gw L-d-1 rate of water ventilation across the respiratory surface... 

Ohkushi, K., Itaki, T., and Nemoto, N. (2003). Last glacial-holocene change in intermediate-water ventilation in the Northwestern Pacific. Quat. Sci. Rev. 22(14), 1477—1484. 

Surface waters of the ocean should respond within a few years to changes in fluxes from the atmosphere, and the upper layers of the ocean should respond on decadal timescales. These expectations are based upon the penetration of the nuclear bomb tritium into the ocean and natural radioisotope °Pb (half-life 22.3 years). Studies of tritium penetration show that surface waters ventilate the upper thermocline of the ocean on a timescale of several years to several decades. °Pb is supplied to the ocean from windblown aerosols which have acquired °Pb from the... 

Chao SY, Shaw PT, Wu SY (1996b) Deep water ventilation in the South China Sea. Deep Sea Res Part I 43(4) 445-466... 

Before determine the position and orientation of observation drilling (drilling nest), we need to punch observation before mining and leave a rich time to punch observation after mining, then we need to consider the integrity of the surrounding rock around drilling nest, convenient water, ventilation, pedestrians should also be considered. 

Fuel cells, together with their ancillary equipment, are very compUcated systems. Therefore, fuel ceU service technicians wUl be expected to perform a variety of tasks in areas such as electrical, thermal, water, ventilation, fuel, magnetic, fuel stack, and process air systems. People who have an acceptable level of skill in aU of the listed areas wiU be in high demand. Therefore, colleges might want to consider programs that include training in aU of these technical areas. 

Heating Solvents, Chlorinated solvents can, upon heating, break down into dangerous compounds. A commonly used solvent, trichloroethylene, decomposes at temperatures not far above the boiling point of water. Ventilation must be adequate to prevent breathing excessive amounts of the solvent vapors or their decomposition products. Air respirators must be used in situations where the concentration of solvent vapors or any other foreign material in the atmosphere exceeds their threshold limit value (TLV). 

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