610 resultados para Gidstam, Björn: Pohjolan lintukirja


Relevância:

10.00% 10.00%

Publicador:

Resumo:

Little is known regarding the swimming ability of the larvae of European plaice (Pleuronectes platessa) in relation to changes in total length (TL), dry weight (DW) and developmental stage, which is surprising given the importance of transport processes to the recruitment dynamics of this species in the North Sea and elsewhere. We investigated ontogenetic changes in the critical swimming speed (Ucrit) of plaice from hatching to the onset of metamorphosis (50 days post-hatch, dph) at 8 °C. The mean (±SD) TL and DW growth rates were 1.59 ± 0.81 and 7.7 ± 0.35 % d−1, respectively. Larvae were unable to swim at against a minimum current speed of <0.5 cm s−1 until 10 dph (7 mm TL), after which Ucrit significantly increased with increasing TL until the onset of metamorphosis and subsequent settlement. Mean (±SD) Ucrit was 0.38(0.35), 1.59(0.54), 2.27(0.49) and 2.99(0.37) cm s−1 for stage I (6.61 ± 2.64 mm TL), stage II (7.75 ± 0.60 mm TL), stage III (9.10 ± 1.00 mm TL) and stage IV (11.59 ± 0.85 mm TL) larvae, respectively. Larval TL, DW, DNA content, RNA content and Ucrit significantly increased, whereas sRD significantly declined as larvae developed from stage I to V. Although inter-individual differences in Ucrit (coefficient of variation, CV = 33 %) were as large as those in biochemical and morphological condition (CV’s of 21–42 %), differences in Ucrit were not significantly related to those in nutritional condition and larvae with lower DNA/DW had also better swimming abilities. These estimates should be useful to ongoing efforts to create individual- based models of the transport, foraging and growth of plaice larvae in the North Sea.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Tese de Doutoramento em Ciências - Especialidade em Biologia

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Dissertação de mestrado em Genética Molecular

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Dissertação de mestrado em Genética Molecular

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Management , innovation project, success factor

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Magdeburg, Univ., Fak. für Naturwiss., Diss., 2011

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Dopamin, Substantia nigra, Gedächtnis, Hippocampus, funktionelle Magnetresonanztomographie, Genetik, Polymorphismus, Dopamin-Transporter, Catechol-O-Methyltransferase, Altern, Morbus Parkinson

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Magdeburg, Univ., Fak. für Elektrotechnik und Informationstechnik, Diss., 2012

Relevância:

10.00% 10.00%

Publicador:

Resumo:

In der Arbeit werden die Einsatzmöglichkeiten von Gleichspannungsnetzen, sowie deren grundsätzlicher Aufbau anhand einer Literaturrecherche herausgestellt. Es wird ein wirtschaftlicher Vergleich zwischen Gleich- und Wechselspannungsnetzen durchgeführt. Außerdem wird die Möglichkeit der Diagnose solcher Netze mittels der Teilentladungsmessung bei Gleichspannung mit dem Schwerpunkt auf verschiedene Sensoren, sowie der besonderen Auswertung bei Gleichspannung untersucht. Die gewonnenen Ergebnisse zeigen, dass die Auswertung von Gleichspannungsteilentladungsmessungen mittels neuartiger Diagramme möglich ist. Hierfür müssen jedoch noch weitere Erfahrungen für die Interpretation der neuen Darstellungsarten gewonnen werden.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Magdeburg, Univ., Med. Fak., Habil.-Schr., 2012

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Magdeburg, Univ., Fak. für Mathematik, Bachelorarbeit, 2013

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Die Arbeit untersucht die Immobilie Juristenstraße 12 in 06886 Lutherstadt Wittenberg. Ausgangspunkt ist der Kauf durch Investoren im Juli 2013. Aufgrund von erheblichem Leerstand, ist das Ziel ein Konzept zu entwickeln, welches die langfristige Vermietung der Flächen im Objekt sichert. Dazu erfolgt zunächst die Bestandsaufnahme des Gebäudes und aller einzelnen Einheiten. Im weiteren Verlauf erfolgt eine Standortanalyse, welche eine Makroanalyse für das Stadtgebiet Wittenberg und eine Mikroanalyse für die Altstadt und das Grundstück beinhaltet. Auf dieser Grundlage erfolgt die Erstellung eines Nutzungskonzepts für die Immobilie. In dieser werden wichtige Sanierungsarbeiten beschrieben, die zur Umsetzung der Zielvorgabe führen sollen. Begleitet wird dieser Schritt durch Kosten- und Mietanalysen die zur abschließenden Renditebtrachtung führen.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Otto-von-Guericke-Universität Magdeburg, Fakultät für Mathematik, Masterarbeit, 2016

Relevância:

10.00% 10.00%

Publicador:

Resumo:

PURPOSE: To identify cancer-linked genes, Sjöblom et al. and Wood et al. performed a genome-wide mutation screening in human breast and colorectal cancers. 140 CAN-genes were found in breast cancer, which in turn contained overall 334 mutations. These mutations could prove useful for diagnostic and therapeutic purposes. METHODS: We used a MALDI-TOF MS 40-plex assay for testing 40 loci within 21 high-ranking breast cancer CAN-genes. To confirm mutations, we performed single-plex assays and sequencing. RESULTS: In general, the mutation rate of the analyzed loci in our sample cohort was very low. No mutation from the 40 loci analyzed could be found in the 6 cell lines. In tissue samples, a single breast cancer tissue sample showed heterozygosity at locus c.5834G>A within the ZFYVE26 gene (Zinc finger FYVE domain-containing gene 26). CONCLUSIONS: Sjöblom et al./Wood et al. already showed that the vast majority of CAN-genes are mutated at very low frequency. Due to the fact that we only found one mutation in our cohort, we therefore assume that at the selected loci, mutations might be low-frequency events and therefore, more rarely detectable. However, further evaluation of the CAN-gene mutations in larger cohorts should be the aim of further studies.