[Ni(3',5'-cGMP)(H20)5][3',5'-cGMP] • 5 H 2 0 (1) was isolated from an aqueous solution of Ni(N03)2 and guanosine 3'.5'-cvclic monophosphate at a pH of 0.5. 1 is orthorhombic P2i2i2i with a = 19.020(4), 6 = 7.718(1), c = 12.316(2) A, Z = 2, Dc = 1.70 g-cm-». The structure was refined to R = 0.085 and Rw = 0.077 for 1364 independent reflections. The structure of 1 is disordered. The nickel atom h...

{[Cu3(3'-GMP)2(3'-GMPH)2(H20)5] • 7 H 2 0 } „ (1) was isolated from an aqueous solution of Cu(N03)2 and guanosine 3'-monophosphate at a pH of 4.4. 1 is monoclinic space group C 2 with a = 29.140(7), b = 6.865(5), c = 16.980(7)Ä, ß = 90.31(3)°, Z = 2, D c = 1.81 g cm-". The structure was refined to R — 0.065 with i?w = 0.060 for 2642 independent reflections. It is disordered about a crystallogra...

[P(NH2)4]Br and [P(NH2)41[N03] have been prepared by anion exchange in liquid ammonia. Single crystals of [P(NH2)4]Br were obtained from an acetonitrile solution in a tempera­ ture gradient between 60 °C and room temperature while attempts to grow single crystals of [P(NH2)4][N 0 3] yielded [P(NH2)4][N 03](OP(NH2)3). Both crystal structures were determined by single crystal X-ray methods at roo...

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

Effects ef ions on the orientation of cortical microtubu]es (MTs) in spirogyra cells were studied. After depotymerization with amiprophos-methyl (APM), MTs were atlowed to reorganize in NaCl sollltions of yarious concentrations. As the conce"tration of NaCl increased, the frequency of ce]ls that had oblique MTs increased. When ce]ls in NaCl solution vvere transferred into artificia) pond water ...

109Ag chemical shift measurements of 0.02 up to 3 molar solutions of AgNOa, AgCl, and AgBr in solvent mixtures of H2O (W) and ethylamine (ea) were performed. The extremely long relaxation times T\ and T2 were determined with new techniques. The Ag+-ion in solvent mixtures of W and ea shows a strongly selective solvation by ea. The 109Ag chemical shift of the solvate complex [Ag ea2]+ surrounded...

Lipoprotein lipase activity was studied in rat parametrial adipose tissue perfused with chylomicrons and in gelatin blocks containing postheparin plasma and chylomicrons . The tissues and blocks were fixed in glutaraldehyde and incubated in 0 .035 M CaCl2-0 .1 M Tris medium (pH 8 .3) at 38 °C. The doubly labeled chylomicron triglycerides (glycerol 3H and palmitate14 C) in the tissues and blocks...

Rates of sediment community oxygen consumption determined in situ are compared to fluxes predicted from oxygen microelectrode gradients measured in cores from -3,750-m water depth in the eastern North Pacific. Oxygen concentrations decrease exponentially over > 1.5 cm and suggest that organic matter in the sediments is degraded most rapidly immediately below the sediment-water interface. Molecu...

This paper presents the results of research in a stationary experiment, launched 1992 on grey forest coarse-dusty light loamy soil, aimed at studying influence long-term chemical amelioration and various fertilisation systems (mineral, organic, organic-mineral) nitrogen regime. Nitrogen is extremely important agriculture, as all growth processes, photosynthesis, metabolism, yield volume quality...