Preliminary estimation of ARFIMA models

COMPSTAT ◽  
2000 ◽  
pp. 247-252
Author(s):  
Marcella Corduas
Keyword(s):  
Preliminary Estimation ◽  
Arfima Models

The diatoms as a component of bottom algocenoses in the mouth of the Oka River

2019 ◽  
Author(s):  
Alexander G. Okhapkin ◽  
Tabet Hhedairia
Keyword(s):  
Water Temperature ◽  
Preliminary Estimation ◽  
Composition And Structure

The preliminary estimation of composition and structure of diatoms in the benthos of the Oka River allowed to determine the clear spatiotemporal confinedness of structure in such communities of them which has the most diverse composition in the low water period while water temperature decreasing.

Preliminary Estimation of the Factors Influencing the Distribution of the Midlittoral Crab Portumnus lysianassa (Herbst, 1796)

Hydrobiologia ◽  
2006 ◽  
Vol 557 (1) ◽  
pp. 97-106 ◽  
Author(s):  
N. Chartosia ◽  
A. Koukouras ◽  
M. Mavidis ◽  
M. -S. Kitsos
Keyword(s):  
Factors Influencing ◽  
Preliminary Estimation

scholarly journals Preliminary estimation of physiological activity of 9-amine-9-fluorenephosphonic acid derivatives

2013 ◽  
Vol 34 (2) ◽  
pp. 253-260 ◽  
Author(s):  
W. Czerwiński ◽  
R. Gancarz ◽  
E. Przybyłka ◽  
J. S. Wieczorek
Keyword(s):  
Nitrogen Atom ◽  
Physiological Activity ◽  
Ethyl Esters ◽  
Test Plant ◽  
Preliminary Estimation ◽  
Technical University ◽  
Spirodela Oligorrhiza

The physiological activity of twenty one 9-amine-9-fluorenephosphonic acid derivatives was tested. The compounds were synthesized by the Wrocław Technical University. <i>Spirodela oligorrhiza</i> was used as the test plant. There was tested the inhibiting influence of these compounds on the growth of <i>Spirodela</i> and synergism with the herbicide "mecoprop". Ethyl esters substituted at the nitrogen atom with buthyl and heptyl group appeared to be most active. Their concentration of 0.5-1.5 × 10<sup>-5</sup> M inhibited the growth of <i>Spirodela</i> by 50%. Most of the 9-amine-9-fluorenephosphonic acid derivatives tested with different substitutes showed a strong synergism with the herbicide "mecoprop". An addition of these compounds to sublethal solution of the herbicide killed <i>Spirodela</i> within 10-20 houres.

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