55th ASMS Conference – Indianapolis 2007 www.chemistry.wustl.edu/~msf/ Overview Purposes •Evaluate the resolving power and sensitivity achievable with a new compensated trap for FTMS as a function of m/z and develop a protocol for tuning this trap. Methods •Sample empirically the cyclotron frequency surface at various cyclotron radii and z-mode amplitude distributions. •Compare the mass resolvi...

We realize a combined trap for bosonic chromium (Cr) and rubidium (Rb) atoms. First experiments focus on exploring a suitable loading scheme for the combined trap and on studies of new trap loss mechanisms originating from simultaneous trapping of two species. By comparing the trap loss from the Rb magneto-optical trap (MOT) in absence and presence of magnetically trapped ground state Cr atoms ...

Broomcorn seed (Sorghum vulgare) was used as raw material for bioethanol production. Optimum conditions were obtained from response surface method. Broomcorn seed flour (45 g/l) was treated by alkaline treatment and dual enzymatic hydrolysis (0.7 g/l of α- amylase and 0.42 g/l of amyloglucosidase). The hydrolyzed total sugar of 25.5 g/L was used in conventional bioethanol production (8.1 g/l) u...

Because of its simple body plan and ease of gene knockout and allele replacement, the moss Physcomitrella patens is often used as a model system for studies in plant physiology and developmental biology. Gene-trap and enhancer-trap systems are useful techniques for cloning genes and enhancers that function in specific tissues or cells. Additionally, these systems are convenient for obtaining mo...

Pheromone-baited traps are often used in ecological studies of the European corn borer, Ostrinia nubilalis (Hübner) (Lepidoptera: Crambidae). However, differences in trap captures may be confounded by trap design, trap location relative to a windbreak, and changes in local weather. The objectives of this experiment were, first, to examine differences in 0. nubilalis adult (moth) captures among ...

In a wheat flour mill, seasonal trends in stored-product insect trap capture, relationships between trap captures inside and outside the mill, and between pheromone trap capture and product infestation, and the impact of fumigation on pest populations, were assessed. Mark-recapture was used to evaluate the potential for movement of insects outside the mill into the mill. For Plodia interpunctel...

Staphylococcus aureus cause infections by producing toxins, a process regulated by cell-cell communication (quorum sensing) through the histidine-phosphorylation of the target of RNAIII-activating protein (TRAP). We show here that TRAP is highly conserved in staphylococci and contains three completely conserved histidine residues (His-66, His-79, His-154) that are phosphorylated and essential f...

The parameters of the near-confocal Fabry-Pérot resonator at the wavelengths of trap light (851 nm) and probe light (780 nm) are summarized in table A1. Both trap laser and probe laser are locked to the resonator via Pound-Drever-Hall locks of 1 MHz loop bandwidth. Another feedback loop stabilizes the resonator frequency to an atomic transition in Rb. The atoms are loaded into the standing-wave...