^|^Uuml;ber die Nukleolinus-Chromosomen von Hyacinthus orientalis

Die Leitwarte von heute verstehen - die Leitwarte von morgen gestalten!

In diesem Beitrag wird eine domänenübergreifende Nutzungskontextanalyse vorgestellt, vor dem Hintergrund der Herausforderung einer stetig ansteigenden Komplexität der Mensch-MaschineSchnittstelle in der Arbeitsumgebung von Leitwartenoperatoren. Die mittels teilnehmender Beobachtung und teilstrukturierten Interviews durchgeführte Erhebung in Leitwarten hatte die Zielsetzung Gemeinsamkeiten in Be...

Die Bedeutung von nationaler Kultur für die Gestaltung von Informationssystemen

snRNP: Rich Nuclear Bodies in Hyacinthus orientalis L. Microspores and Developing Pollen Cells

The aim of the present work was the characterization of nuclear bodies in the microspore and developing pollen cells of Hyacinthus orientalis L.. The combination of Ag-NOR, immunofluorescence and immunogold techniques was used in this study. The obtained results showed the presence of highly agyrophylic extranucleolar bodies in microspore and developing pollen cells, which were finally identifi...

Nuclear activity of sperm cells during Hyacinthus orientalis L. in vitro pollen tube growth

In this study, the transcriptional state and distribution of RNA polymerase II, pre-mRNA splicing machinery elements, and rRNA transcripts were investigated in the sperm cells of Hyacinthus orientalis L. during in vitro pollen tube growth. During the second pollen mitosis, no nascent transcripts were observed in the area of the dividing generative cell, whereas the splicing factors were present...

Die Kristallstruktur von Ga3Cl7

Trigallium heptachloride, G a3Cl7, has been prepared from GaCl3 and Ga in sealed glass ampoules. G a3Cl7 crystallizes in the space group P«a2, (No. 33) with a = 1181.8(1) pm; b = 889.7(1) pm; c — 1057.5(1) pm; Z = 4. The compound is isotypic with KGa2Cl7. The G a2Cl7~ anion has nearly C2 symmetry (gauche conformation) with d (G a—Clbrjdg) = 230.3 pm, d(G a—Clterm) = 214.3 pm and < G a —Cl —Ga =...