Bounds on the Zγγ couplings from HERA

The possibility of testing trilinear neutral gauge boson couplings in radiative neutral current scattering at HERA is analyzed using a Monte Carlo program that includes the Standard Model at tree level and the anomalous vertices. Acceptance and isolation cuts are applied as well as optimized cuts to enhance the signal from new physics. The bounds on Z\gamma\gamma couplings that can be achieved are not so stringent as present bounds, even for high luminosities, but probe a different kinematical region almost unsensitive to form factors.This work has been partially supported by the CICYT and the European Commission under contract CHRX-CT-92-0004

Modelling ultrasonic debulking of tape lamination

COMATCOMP 09 : Donostia - San Sebastian, 7, 8 y 9 de octubre de 2009A numerical model is presented, which has been developed to study the quality of the ultrasonic debulking of a composite laminate. The quality of the debulking level will depend, primarily, of the temperature raised in the laminate. For that reason, the evolution in time of the temperature inside the composite laminate has been studied. To this end, a thermal model has been developed which leads to the determination of the temperature inside the laminate from the values of the temperature at the tip of the ultrasonic horn. To validate the model, the numerical results have been compared with experimental measurements in a particular case

Peer education for secondary stroke prevention in inner-city minorities: Design and methods of the Prevent Recurrence of All Inner-city Strokes through Education randomized controlled trial

Background The highest risk for stroke is among survivors of strokes or transient ischemic attacks (TIA). However, use of proven-effective cardiovascular medications to control stroke risk is suboptimal, particularly among the Black and Latino populations disproportionately impacted by stroke. Methods A partnership of Harlem and Bronx community representatives, stroke survivors, researchers, clinicians, outreach workers and patient educators used community-based participatory research to conceive and develop the Prevent Recurrence of All Inner-city Strokes through Education (PRAISE) trial. Using data from focus groups with stroke survivors, they tailored a peer-led, community-based chronic disease self-management program to address stroke risk factors. PRAISE will test, in a randomized controlled trial, whether this stroke education intervention improves blood pressure control and a composite outcome of blood pressure control, lipid control, and use of antithrombotic medications. Results Of the 582 survivors of stroke and TIA enrolled thus far, 81% are Black or Latino and 56% have an annual income less than $15,000. Many (33%) do not have blood pressures in the target range, and most (66%) do not have control of all three major stroke risk factors. Conclusions Rates of stroke recurrence risk factors remain suboptimal in the high risk, urban, predominantly minority communities studied. With a community-partnered approach, PRAISE has recruited a large number of stroke and TIA survivors to date, and may prove successful in engaging those at highest risk for stroke and reducing disparities in stroke outcomes in inner-city communities

The Front End Electronics of the Scintillator Pad Detector of LHCb Calorimeter

In this paper the Front End electronics of the Scintillator Pad Detector (SPD) is outlined. The SPD is a sub-system of the Calorimeter of the LHCb experiment designed to discriminate between charged and neutral particles for the first level trigger. The system design is presented, describing its different functionalities implemented through three different cards and several ASICs. These functionalities are signal processing and digitization, data transmission, interface with control and timing systems of the experiment, low voltage power supply distribution and monitoring. Special emphasis is placed on installation and commissioning subjects such as cabling, grounding, shielding and power distribution

Development of a prototype test system for certification of curved fuselage panels

Volume 1024, Issue 1 Article number 012081A prototype test system with capacity to reproduce combined loads representative of real loading cases of a curved fuselage panel has been developed. This prototype test system allows the structural validation of curved fuselage panels to be accomplished. The developed system is able to apply combined mechanical and pressurization loading states under quasi-static and dynamic loading conditions. It has been designed using CAD models and calculated with the aid of Finite Element models to ensure its integrity. A data acquisition system synchronized with a control system enables real time monitoring of test parameters.Horizonte 2020 (Unión Europea) CS2-AIR-GAM-2014-2015-0

Stability and Electronic Properties of TiO2 Nanostructures With and Without B and N Doping

We address one of the main challenges to TiO2-photocatalysis, namely band gap narrowing, by combining nanostructural changes with doping. With this aim we compare TiO2's electronic properties for small 0D clusters, 1D nanorods and nanotubes, 2D layers, and 3D surface and bulk phases using different approximations within density functional theory and GW calculations. In particular, we propose very small (R < 0.5 nm) but surprisingly stable nanotubes with promising properties. The nanotubes are initially formed from TiO2 layers with the PtO2 structure, with the smallest (2,2) nanotube relaxing to a rutile nanorod structure. We find that quantum confinement effects - as expected - generally lead to a widening of the energy gap. However, substitutional doping with boron or nitrogen is found to give rise to (meta-)stable structures and the introduction of dopant and mid-gap states which effectively reduce the band gap. Boron is seen to always give rise to n-type doping while depending on the local bonding geometry, nitrogen may give rise to n-type or p-type doping. For under coordinated TiO2 surface structures found in clusters, nanorods, nanotubes, layers and surfaces nitrogen gives rise to acceptor states while for larger clusters and bulk structures donor states are introduced

Health Care Workers Occupational Accidents in a Brazilian Hospital

Universidade Federal de São Paulo, São Paulo, BrazilUniversidade Federal de São Paulo, São Paulo, BrazilWeb of Scienc