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Variations in the physical properties of surf generated aerosols with altitude

100%
Zielinski T.
Oceanologia
|
2003
|
tom 45
|
nr 4
Vertical profiles of marine aerosol size distribution and concentration in the marine boundary layer over surf zones depend strongly on wind speed, direction and duration as well as the sea bottom profile. The measurements in the present study were carried out in various seasons of the year with all these factors being taken into consideration. The data with respect to offshore winds were neglected in the calculations, since in such cases the major aerosol contribution was from terrigenous and anthropogenic particles. It was confirmed that in the range of wind speeds from 1 m s−1 to 12 m s−1 there were measurable differences in the concentrations, particularly in the size distribution of marine aerosol particles at two stations differing with respect to their sea bottom profiles.
2

Distribution of Dileptus anser (Ciliata, Holotricha, Gymnostomatida) of various genotypes for mat locus in the concentration gradient of their gamones

84%
Afon'kin S. Y., Yudin A. L.
Acta Protozoologica
|
1987
|
tom 26
|
nr 2
3

The effectiveness of penetration of erythrocyte membrane by sodium salt of 2,4-dichlorophenoxyacetic acid

84%
Bukowska B., Glowacki R., Michalowicz J., Bald E., Duda W.
Polish Journal of Environmental Studies
|
2008
|
tom 17
|
nr 1
11-16
The effectiveness of penetration of erythrocyte membrane by sodium salt of 2,4-dichlorophenoxyacetic acid was analyzed. The experiment was executed in a dependence on different doses of the herbicide and at different times of incubation of red blood cells with 2,4-D-Na. It is known that the main mechanism of detoxification of the cell from xenobiotics including 2,4-D is to bind them with proteins contained in blood plasma. In the case of exposure of blood to high doses of 2,4-D-Na, the unbound part of xenobiotics may penetrate into erythrocytes and change the activity of numerous parameters of the cells. The results obtained by the use of high pressure liquid chromatography (HPLC) revealed that 2,4-D-Na is adsorbed by erythrocytes of 5% haematocrite in the amount of ~1% of the initial concentration. Moreover, it was observed that 2,4-D-Na is capable of accumulating in erythrocyte’s membrane and haemolysate in the amounts of 0.15% and 1.23% of the initial concentration, respectively. It was also stated that penetration of 2,4-dichlorophenoxyacetic acid into erythrocytes is not associated with incubation time (the similar concentrations of 2,4-D-Na were detected after different incubation times of 0.5 to 3 hours); however, it was related with concentrations of the herbicide. We suggest that 2,4-D-Na was transported with concentration gradient in human erythrocytes.
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