Some Peculiarities in the Diurnal Variation of Maximum Ionization Density of the F2 Layer

Nature ◽  
1963 ◽  
Vol 198 (4877) ◽  
pp. 276-277 ◽  
Author(s):  
C. S. R. RAO
Keyword(s):  
Diurnal Variation ◽  
Ionization Density ◽  
Maximum Ionization

scholarly journals The association of meteorological changes with variations of ionization in the F 2 region of the ionosphere

1940 ◽  
Vol 174 (958) ◽  
pp. 298-309 ◽  
Keyword(s):  
Seasonal Variation ◽  
Seasonal Variations ◽  
Barometric Pressure ◽  
Magnetic Storms ◽  
The Other ◽  
Ionization Density ◽  
Other Hand ◽  
Solar Eruptions ◽  
Maximum Ionization

1. Introduction Of the known regions in the ionosphere, the F 2 region shows the most erratic variations. Whereas the E and F 1 regions show ionization maxima diurnally at noon, and seasonally in midsummer, in accordance with theory (Chapman 1931), the F 2 region on the other hand frequently shows diurnal ionization maxima both in the morning and afternoon, with a minimum near noon, while the seasonal variation shows maxima near the equinoxes and minima at both midsummer and midwinter. In addition to these unusual diurnal and seasonal variations, the region is particularly subject to disturbances, most of which tend to lower its maximum ionization density. Thus Appleton and Ingram (1935) have shown that magnetic storms are frequently accompanied by a decrease in the F 2 ionization, while Martyn, Munro, Higgs and Williams (1937) have found that all bright hydrogen solar eruptions are accompanied by a reduction of the maximum ionization density. In addition to these types of variation, Martyn and Pulley (1936) found some evidence that the noon F 2 ionization density correlated positively with the barometric pressure at the ground.

Fibrinolysis and Alimentary Lipaemia in Whites and Bantus; Their Relationship and Response to Intravenous Heparin

1964 ◽  
Vol 11 (01) ◽  
pp. 108-118 ◽  
Author(s):  
H Lackner ◽  
R Sougin-Mibashan
Keyword(s):  
Diurnal Variation ◽  
Fibrinolytic Activity ◽  
Butter Fat ◽  
Intravenous Heparin ◽  
The Difference

Summary and Conclusion1. Diurnal variation in fibrinolysis is marked in the Whites and almost absent in the Bantu. >2. The difference in fibrinolytic activity beween White and Bantu has been confirmed, but was found to decrease over the course of the morning due to diurnal variation in the White subjects.3. The ingestion of butter fat does not inhibit fibrinolysis to any appreciable extent in either White or Bantu.4. The accelerating effect of heparin on fibrinolysis was found to be present in lipaemic plasma, but appears to be distinct from the fat-clearing effect.

STUDIES ON DIURNAL VARIATION IN THYROID ACTIVITY

1962 ◽  
Vol 40 (3_Suppl) ◽  
pp. S149 ◽  
Author(s):  
A. Walser ◽  
H. Lüthy ◽  
H. R. Jenzer
Keyword(s):  
Diurnal Variation ◽  
Thyroid Activity

DIURNAL VARIATION OF PARTICULATE MATTER IN THE PROXIMITY OF ROVINARI FOSSIL-FUEL POWER PLANT

2011 ◽  
Vol 10 (1) ◽  
pp. 99-105 ◽  
Author(s):  
Catalin Nisulescu ◽  
Delia Calinoiu ◽  
Adrian Timofte ◽  
Andreea Boscornea ◽  
Camelia Talianu
Keyword(s):  
Particulate Matter ◽  
Power Plant ◽  
Diurnal Variation ◽  
Fossil Fuel ◽  
Fossil Fuel Power Plant

Diurnal variation in net photosynthetic rate and influencing environmentalfactors of Elaeagnus mollis Diels leaf

2009 ◽  
Vol 17 (3) ◽  
pp. 474-478
Author(s):  
Qun-Long LIU ◽  
Chan-Juan NING ◽  
Duo WANG ◽  
Guo-Liang WU ◽  
Hong-Mei ZHANG ◽  
...  
Keyword(s):  
Diurnal Variation ◽  
Net Photosynthetic Rate ◽  
Photosynthetic Rate ◽  
Elaeagnus Mollis
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