Search results for "Petersen"
showing 5 items of 5 documents
Zur Erinnerung an Julius Gustav Petersen, Livländischen Gouvernements-Procureur, geb. am 17. August 1806, gest. am 17. Mai 1844
1844
"von C.A. Berkholz, Oberpastor zu St. Jacob in Riga"
Electrical Safety of Resonant Grounding
2019
The resonant grounding is one of the possible methods of system neutral grounding for the medium-voltage distribution. IEEE standards do define this grounding configuration, but important advantages and drawbacks of the resonant grounding might not be fully known, due to its rather uncommon application in North America. On the other hand, resonant grounding in Europe is imposed by the increased requirements for power quality, especially for medium-voltage industrial users, and imposed to electric utilities by Regulatory Authorities, with the purpose to protect the interests of users and consumers. Level of the continuity of the service, magnitude and phase of ground-fault currents, magnitud…
'Viva Alemania': internados alemanes de Camerún en España durante la Primera Guerra Mundial
2019
espanolUn episodio historico poco conocido en el ambito de las relaciones interculturales germano-espanolas y de los procesos migratorios, pero cuyas huellas son todavia palpables en la actualidad, es el de la internacion de la llamada Schutztruppe (fuerza militar colonial alemana) de Camerun en Espana durante la Primera Guerra Mundial. Lo sorprendente en esta situacion de crisis politica se reflejo en el entusiasmo y la admiracion con que fueron recibidos en un primer momento los llamados “internados” alemanes en un pais supuestamente neutral y que se encontraba oficiosamente dividido entre aliadofilos y germanofilos. El ensayo es el resultado de una minuciosa busqueda de las huellas liter…
Data from: The importance of phytoplankton biomolecule availability for secondary production
2018
The growth and reproduction of animals is affected by their access to resources. In aquatic ecosystems, the availability of essential biomolecules for filter-feeding zooplankton depends greatly on phytoplankton. Here, we analyzed the biochemical composition, i.e., the fatty acid, sterol and amino acid profiles and concentrations as well as protein, carbon, nitrogen, and phosphorus content of 17 phytoplankton monocultures representing the seven most abundant phytoplankton classes in boreal and sub-arctic lakes. To examine how the differences in the biochemical composition between phytoplankton classes affect their nutritional quality for consumers, we assessed the performance of Daphnia, on …
Electrical Safety Analysis in the Presence of Resonant Grounding Neutral
2019
The resonant grounding is one of the possible methods of the system neutral grounding for the medium voltage distribution. IEEE standards do define this grounding configuration, but important advantages and drawbacks of the resonant grounding might not be fully known, due to its rather uncommon application in North America. On the other hand, resonant grounding in Europe is imposed by the increased requirements for power quality, especially for medium-voltage (MV) industrial users, imposed to electric utilities by regulatory authorities, with the purpose to protect the interests of users and consumers. Level of the continuity of the service, magnitude and phase of ground-fault currents, mag…