Multi-Elemental Analysis of Sandhills Meadow Hay

Traditionally, ranches in the Sandhills of Nebraska feed meadow hay to cows during the winter. Trace element composition of meadow hay varies. To determine if, when and where trace element supplementation is necessary, it is important to characterize the trace element concentrations in the hay. If the variation in trace element content of hay among location and years can be predicted ranch managers and advisors may develop appropriate strategies for sampling hay and preventing trace element deficiencies. Our objective was to develop a data base of trace element content of meadow hay from various locations over two years. The data base could be used to predict needs for sampling and supplementation strategies. appropriate strategies for sampling and supplementation strategies

Multi-Elemental Analysis of Sandhills Meadow Hay

Traditionally, ranches in the Sandhills of Nebraska feed meadow hay to cows during the winter. Trace element composition of meadow hay varies. To determine if, when and where trace element supplementation is necessary, it is important to characterize the trace element concentrations in the hay. If the variation in trace element content of hay among location and years can be predicted ranch managers and advisors may develop appropriate strategies for sampling hay and preventing trace element deficiencies. Our objective was to develop a data base of trace element content of meadow hay from various locations over two years. The data base could be used to predict needs for sampling and supplementation strategies. appropriate strategies for sampling and supplementation strategies

Modifizierung und Immobilisierung von Enzymen zur Herstellung neuartiger katalytischer Plattformen

In der vorliegenden Arbeit werden neue Konjugationsstrategien präsentiert, welche zur Herstellung von Protein-DNA Konjugaten verwendet werden können. Hierbei liegt der Schwerpunkt einerseits auf Strategien zur Modifizierung der natürlichen Aminosäure Tyrosin und andererseits auf eine lichtinduzierte reaktive Cycloaddition mittels eines sog. "eingesperrten reaktiven Diens". Weiterhin werden effektive Klonierungsmethoden und das Feld der DNA Origami Nanotechnologie vertieft

Synthesis of novel monomers containing the trifluorovinylidene group and the cyanato group and polymers thereof

Novel hybrid monomers containing both the aryltrifluorovyinyloxyether-group (TFVE-group) and the cyanato-group, their synthesis, and the synthesis of polymers made from these new hybrid monomers are disclosed

Two-stage, low noise quantum frequency conversion of single photons from silicon-vacancy centers in diamond to the telecom C-band

The silicon-vacancy center in diamond holds great promise as a qubit for quantum communication networks. However, since the optical transitions are located within the visible red spectral region, quantum frequency conversion to low-loss telecommunication wavelengths becomes a necessity for its use in long-range, fiber-linked networks. This work presents a highly efficient, low-noise quantum frequency conversion device for photons emitted by a silicon-vacancy (SiV) center in diamond to the telecom C-band. By using a two-stage difference-frequency mixing scheme SPDC noise is circumvented and Raman noise is minimized, resulting in a very low noise rate of $10.4 \pm 0.7$ photons per second as well as an overall device efficiency of $35.6\, \%$. By converting single photons from SiV centers we demonstrate the preservation of photon statistics upon conversion.Comment: 12 pages, 3 figure

Surface Cover from Corn Residue on Sandy Soils

Corn residue left as surface cover after land preparation and planting by various combinations of tillage implements and surface planters, respectively, was measured on four research/ demonstration sites with sandy soils in Nebraska. Surface cover ranged from 51 to 80% for the no-till treatments to 14 to 53% for the twice-disked treatments. The wide range in cover was due to the amount of antecedent residues from the previous crop and the soil type which ranged from sandy loam to tine sands. Other tillage implements included a rolling cultivator, sweep-plow, and mulch-treader