Electrostatic image theory for the dielectric sphere with an internal source

1992 ◽  
Vol 5 (11) ◽  
pp. 597-602 ◽  
Author(s):  
Johan C.-E. Sten ◽  
Ismo V. Lindell
Keyword(s):  
Image Theory ◽  
Internal Source ◽  
Dielectric Sphere

Image theory for a point charge inside a layered dielectric sphere

1994 ◽  
Vol 77 (5) ◽  
pp. 327-335 ◽  
Author(s):  
J. C. -E. Sten ◽  
R. Ilmoniemi
Keyword(s):  
Point Charge ◽  
Image Theory ◽  
Dielectric Sphere ◽  
Layered Dielectric

Electrostatic image theory for the dielectric sphere

Radio Science ◽  
1992 ◽  
Vol 27 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Ismo V. Lindell
Keyword(s):  
Image Theory ◽  
Dielectric Sphere

Low-frequency image theory for the dielectric sphere

1994 ◽  
Vol 8 (3) ◽  
pp. 295-313 ◽  
Author(s):  
I.V. Lindell ◽  
J.C.-E. Sten ◽  
R.E. Kleinman
Keyword(s):  
Low Frequency ◽  
Image Theory ◽  
Dielectric Sphere

Electrostatic image theory for layered dielectric sphere

1992 ◽  
Vol 139 (2) ◽  
pp. 186 ◽  
Author(s):  
I.V. Lindell ◽  
M.E. Ermutlu ◽  
A.H. Sihvola
Keyword(s):  
Image Theory ◽  
Dielectric Sphere ◽  
Layered Dielectric

scholarly journals Benthic fluxes of dissolved organic nitrogen in the lower St. Lawrence estuary and implications for selective organic matter degradation

2013 ◽  
Vol 10 (11) ◽  
pp. 7609-7622 ◽  
Author(s):  
M. Alkhatib ◽  
P. A. del Giorgio ◽  
Y. Gelinas ◽  
M. F. Lehmann
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Nitrogen ◽  
Organic Nitrogen ◽  
Bottom Water ◽  
Estuarine Sediments ◽  
Internal Source ◽  
Lawrence Estuary ◽  
Element Partitioning ◽  
Sediment Porewaters ◽  
St Lawrence Estuary

Abstract. The distribution of dissolved organic nitrogen (DON) and carbon (DOC) in sediment porewaters was determined at nine locations along the St. Lawrence estuary and in the gulf of St. Lawrence. In a previous manuscript (Alkhatib et al., 2012a), we have shown that this study area is characterized by gradients in the sedimentary particulate organic matter (POM) reactivity, bottom water oxygen concentrations, and benthic respiration rates. Based on the porewater profiles, we estimated the benthic diffusive fluxes of DON and DOC in the same area. Our results show that DON fluxed out of the sediments at significant rates (110 to 430 μmol m−2 d−1). DON fluxes were positively correlated with sedimentary POM reactivity and varied inversely with sediment oxygen exposure time (OET), suggesting direct links between POM quality, aerobic remineralization and the release of DON to the water column. DON fluxes were on the order of 30 to 64% of the total benthic inorganic fixed N loss due to denitrification, and often exceeded the diffusive nitrate fluxes into the sediments. Hence they represented a large fraction of the total benthic N exchange, a result that is particularly important in light of the fact that DON fluxes are usually not accounted for in estuarine and coastal zone nutrient budgets. In contrast to DON, DOC fluxes out of the sediments did not show any significant spatial variation along the Laurentian Channel (LC) between the estuary and the gulf (2100 ± 100 μmol m−2 d−1). The molar C / N ratio of dissolved organic matter (DOM) in porewater and the overlying bottom water varied significantly along the transect, with lowest C / N in the lower estuary (5–6) and highest C / N (> 10) in the gulf. Large differences between the C / N ratios of porewater DOM and POM are mainly attributed to a combination of selective POM hydrolysis and elemental fractionation during subsequent DOM mineralization, but selective adsorption of DOM to mineral phases could not be excluded as a potential C / N fractionating process. The extent of this C- versus N- element partitioning seems to be linked to POM reactivity and redox conditions in the sediment porewaters. Our results thus highlight the variable effects selective organic matter (OM) preservation can have on bulk sedimentary C / N ratios, decoupling the primary source C / N signatures from those in sedimentary paleoenvironmental archives. Our study further underscores that the role of estuarine sediments as efficient sinks of bioavailable nitrogen is strongly influenced by the release of DON during early diagenetic reactions, and that DON fluxes from continental margin sediments represent an important internal source of N to the ocean.

Anapole electric dipole modes for a dielectric sphere

2020 ◽  
Author(s):  
S. R. Ponomareva ◽  
E. A. Gurvitz ◽  
K. S. Ladutenko ◽  
A. M. Miroshnichenko ◽  
A. S. Shalin
Keyword(s):  
Electric Dipole ◽  
Dielectric Sphere

scholarly journals Coworking with Roma: Exploration of Slovak majority’s cooperation intention using content analyses and networks of free association

Human Affairs ◽  
2021 ◽  
Vol 31 (2) ◽  
pp. 194-211
Author(s):  
Juraj Petrík ◽  
Branislav Uhrecký ◽  
Miroslav Popper ◽  
Lenka Nôtová
Keyword(s):  
Research Group ◽  
Free Association ◽  
Image Theory ◽  
Demographic Groups ◽  
Network Analyses ◽  
The Third ◽  
Demographic Group ◽  
Content Analyses ◽  
Roma People ◽  
Mental Constructs

Abstract This study, theoretically based on integrated threat and image theory, explored (1) the mental constructs produced by the Slovak majority in relation to cooperation with the Roma minority and (2) differences in thinking about different Roma demographic groups. In Slovakia, prejudice towards Roma people is a long-standing phenomenon. In this study there were 228 participants, mostly young adults, who produced 22 categories of associations, explored using content and network analyses. The frequency of category associations in the first and second research group was mostly the same, but the distribution differed for the demographic groups considered by the third research group, which was asked to produce associations separately for each Roma demographic group. The largest difference measured was between integrated and segregated Roma people – the associations were mostly positive for the first and negative for the second. These results provide the first empirical exploration of cooperation intentions with Roma people in the Slovak context and suggestions are made for future discourse on Roma.

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