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Modeling and experimental study to identify arrival-time jitter sources in the presence of a magnetic chicane
(2013)Physical Review. Special Topics. Accelerators and BeamsThe accurate and stable synchronization between electron bunch and external laser is a key requirement for the successful operation of an externally seeded free electron laser. This requirement is particularly stringent when the electron bunch is longitudinally compressed to sub-ps durations. We present an analytical description of the electron bunch arrival-time jitter that, supported by experimental evidence, allows the identification ...Journal Article -
Cyclotrons with fast variable and/or multiple energy extraction
(2013)Physical Review. Special Topics. Accelerators and BeamsWe discuss the possibility in principle of stripping extraction in combination with reverse bends in isochronous separate-sector cyclotrons (and/or fixed field alternating gradient accelerators). If one uses reverse bends between the sectors (instead of or in combination with drifts) and places stripper foils at the sector exit edges, the stripped beam has a reduced bending radius and it should be able to leave the cyclotron within the ...Journal Article -
Infections with the microbe Cardinium in the Dolichopodidae and other Empidoidea
(2013)Journal of Insect ScienceMaternally transmitted reproductive parasites such as Wolbachia and Cardinium can drastically reshape reproduction in their hosts. Beyond skewing sex ratios towards females, these microbes can also cause cytoplasmic incompatibility. Wolbachia probably infects two thirds of insects, but far less is known about the occurrence or action of other bacteria with potentially similar effects. In contrast with the two more widespread reproductive ...Journal Article -
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Topoclimatological case-study of Alpine pastures near the Albula Pass in the eastern Swiss Alps
(2013)Geographica HelveticaAlpine grasslands are an important source of fodder for the cattle of Alpine farmers. Only during the short summer season can these pastures be used for grazing. With the anticipated climate change, it is likely that plant production – and thus the fodder basis for the cattle – will be influenced. Investigating the dependence of biomass production on topoclimatic factors will allow us to better understand how anticipated climate change ...Journal Article -
Security of two-way quantum key distribution
(2013)Physical Review AQuantum key distribution protocols typically make use of a one-way quantum channel to distribute a shared secret string to two distant users. However, protocols exploiting a two-way quantum channel have been proposed as an alternative route to the same goal, with the potential advantage of outperforming one-way protocols. Here we provide a strategy to prove security for two-way quantum key distribution protocols against the most general ...Journal Article -
ArDM: first results from underground commissioning
(2013)Journal of InstrumentationThe Argon Dark Matter experiment is a ton-scale double phase argon Time Projection Chamber designed for direct Dark Matter searches. It combines the detection of scintillation light together with the ionisation charge in order to discriminate the background (electron recoils) from the WIMP signals (nuclear recoils). After a successful operation on surface at CERN, the detector was recently installed in the underground Laboratorio Subterráneo ...Journal Article -
Comparison of climate change signals in CMIP3 and CMIP5 multi-model ensembles and implications for Central Asian glaciers
(2013)Hydrology and Earth System SciencesCentral Asian water resources largely depend on melt water generated in the Pamir and Tien Shan mountain ranges. To estimate future water availability in this region, it is necessary to use climate projections to estimate the future glacier extent and volume. In this study, we evaluate the impact of uncertainty in climate change projections on the future glacier extent in the Amu and Syr Darya river basins. To this end we use the latest ...Journal Article -
Synthetically defined glycoprotein vaccines: current status and future directions
(2013)Chemical SciencePrimary examples in vaccine design have shown good levels of carbohydrate-specific antibody generation when raised using extracted or fully synthetic capsular polysaccharide glycans covalently coupled to a protein carrier. Herein, we cover recent clinical developments of carbohydrate-based vaccines and describe how novel cutting-edge methodology for the total synthesis of oligosaccharides and for the precise placement of carbohydrates at ...Journal Article -
Experimental chlorine partitioning between forsterite, enstatite and aqueous fluid at upper mantle conditions
(2013)Geochimica et Cosmochimica ActaCl partition coefficients between forsterite, enstatite and coexisting Cl-bearing aqueous fluids were determined in a series of high pressure and temperature piston cylinder experiments at 2GPa between 900 and 1300°C in the system MgO-SiO2-H2O-NaCl-BaO-C±CaCl2±TiO2±Al2O3±F. Diamond aggregates were added to the experimental capsule set-up in order to separate the fluid from the solid residue and enable in situ analysis of the quenched ...Journal Article