1,164 research outputs found
Phase-resolved Crab pulsar measurements from 25 to 400 GeV with the MAGIC telescopes
We report on observations of the Crab pulsar with the MAGIC telescopes. Our
data were taken in both monoscopic (> 25GeV) and stereoscopic (> 50GeV)
observation modes. Two peaks were detected with both modes and phase-resolved
energy spectra were calculated. By comparing with Fermi- LAT measurements, we
find that the energy spectrum of the Crab pulsar does not follow a power law
with an exponential cutoff, but has an additional hard component, extending up
to at least 400 GeV. This suggests that the emission above 25 GeV is not
dominated by curvature radiation, as suggested in the standard scenarios of the
OG and SG models.Comment: 4 pages, 2 figures, Proc. TAUP 2011, submitted for publication in
JCP
Industry 4.0 Driven Result-oriented PSS: An Assessment in the Energy Management
Sustainability is a current challenge and all sectors, including the buildings one, are being called upon to provide a solution to mitigate climate change.
The state of the art of energy management using Information and Communication Technologies (ICT) technology in building systems industry is
characterized by a traditional monitoring approach which could assess the energy consumption of the building but that cannot manage and act the
required action to improve the energy management according to a demand side approach. The aim of this paper is to overcome this traditional monitoring
approach, presenting Simon, a new model proposed by Evogy, enabling a result-oriented product service system (PSS) for buildings through cyber physical systems, artificial intelligence, and internet of things adoption. The main findings highlight the benefits associated with the Simon model by
virtue of digital-based predictive maintenance on the real system. In addition, its adoption allows the PSS provider to aggregate energy demand from
the plethora of buildings and, according to digital technologies, not only monitor consumption but also implement equipment. Finally, the application
case highlights the benefits are different and thus stands as a best practice for combining sustainability and digitization
Spectroscopic investigation of unstudied southern PNe
We present a spectroscopic investigation of two hitherto unstudied galactic
planetary nebulae (MeWe 1-10 and MeWe 1-11) and one candidate object (MeWe
2-5). The candidate object clearly has been identified as a bipolar hourglass
shaped PN. The galactic foreground extinction was derived and using
photoionization models with CLOUDY the two round objects were classified as
highly evolved nebulae.Comment: LaTeX, 5 pages with 6 figures, accepted in Astron. & Astrophy
TPXL-1 activates Aurora A to clear contractile ring components from the polar cortex during cytokinesis
During cytokinesis, a signal from the central spindle that forms between the separating anaphase chromosomes promotes the accumulation of contractile ring components at the cell equator, while a signal from the centrosomal microtubule asters inhibits accumulation of contractile ring components at the cell poles. However, the molecular identity of the inhibitory signal has remained unknown. To identify molecular components of the aster-based inhibitory signal, we developed a means to monitor the removal of contractile ring proteins from the polar cortex after anaphase onset. Using this assay, we show that polar clearing is an active process that requires activation of Aurora A kinase by TPXL-1. TPXL-1 concentrates on astral microtubules coincident with polar clearing in anaphase, and its ability to recruit Aurora A and activate its kinase activity are essential for clearing. In summary, our data identify Aurora A kinase as an aster-based inhibitory signal that restricts contractile ring components to the cell equator during cytokinesis.We thank the Caenorhabditis Genetic Center (funded by the National Institutes of Health Office of Research Infrastructure Programs P40 OD010440) for strains. This work was supported by grants to K. Oegema (National Institutes of Health; GM074207), E. Zanin (Deutsche Forschungsgemeinschaft, ZA619/3-1), and A.X. Carvalho (European Research Council; 640553–ACTOMYO). T. Kim was supported by a grant to Arshad Desai (National Institutes of Health; GM074215). K. Oegema receives salary and other support from the Ludwig Institute for Cancer Research. S. Mangal is a member of International Max Planck Research School for Molecular Life Sciences, and J. Sacher is a member of the Life Science Munich graduate program; both thank their programs for support
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