426 research outputs found
Preliminary report
Following the identification of two autochthonous cases of dengue type 1 on 3 October 2012, an outbreak of dengue fever has been reported in Madeira, Portugal. As of 25 November, 1,891 cases have been detected on the island where the vector Aedes aegypti had been established in some areas since 2005. This event represents the first epidemic of dengue fever in Europe since 1928 and concerted control measures have been initiated by local health authorities.publishersversionpublishe
Project 8 Phase III Design Concept
We present a working concept for Phase III of the Project 8 experiment,
aiming to achieve a neutrino mass sensitivity of ( C.L.)
using a large volume of molecular tritium and a phased antenna array. The
detection system is discussed in detail.Comment: 3 pages, 3 figures, Proceedings of Neutrino 2016, XXVII International
Conference on Neutrino Physics and Astrophysics, 4-9 July 2016, London, U
Results from the Project 8 phase-1 cyclotron radiation emission spectroscopy detector
The Project 8 collaboration seeks to measure the absolute neutrino mass scale
by means of precision spectroscopy of the beta decay of tritium. Our technique,
cyclotron radiation emission spectroscopy, measures the frequency of the
radiation emitted by electrons produced by decays in an ambient magnetic field.
Because the cyclotron frequency is inversely proportional to the electron's
Lorentz factor, this is also a measurement of the electron's energy. In order
to demonstrate the viability of this technique, we have assembled and
successfully operated a prototype system, which uses a rectangular waveguide to
collect the cyclotron radiation from internal conversion electrons emitted from
a gaseous Kr source. Here we present the main design aspects of the
first phase prototype, which was operated during parts of 2014 and 2015. We
will also discuss the procedures used to analyze these data, along with the
features which have been observed and the performance achieved to date.Comment: 3 pages; 2 figures; Proceedings of Neutrino 2016, XXVII International
Conference on Neutrino Physics and Astrophysics, 4-9 July 2016, London, U
Um Caso Clínico de Lepra Multibacilar com Vários Surtos de Eritema Nodoso Leproso
Leprosy is a chronic granulomatous disease with a long incubation period caused by Mycobacterium leprae that mainly affects the skin, mucous membranes and the peripheral nervous system. It carries the risk of per-manent sequels with a significant impact on the patient’s quality of life. It has a considerable clinically diver-sity and possible atypical presentations. We present a case of a 31-year-old, skin phototype V woman with multibacillary leprosy characterized by multiple outbreaks of erythema nodosum leprosum, as an inaugural manifestation of the disease. The disease was acquired within a group of children and adolescents from an endemic region of Africa, evolved untreated for 3 years, and presented with unusual features and remarkable lymphatic involvement. We highlight the importance of building and maintaining collaboration between expert centers and institutional partnerships in order to provide the adequate diagnostic resources and appropriate care to the affected populations.A lepra é uma doença granulomatosa crónica com longo período de incubação causada pelo bacilo Mycobacte- -rium leprae que afeta principalmente a pele, mucosas e sistema nervoso periférico. Tem risco de sequelas permanentes e impacto significativo na qualidade de vida do paciente. É clinicamente heterogénea com possíveis apresentações atípicas. Descrevemos o caso de uma mulher de 31 anos, fototipo V, com lepra multibacilar caracterizada por múltiplos surtos de eritema nodoso leproso como manifestação inaugural. A doença foi adquirida num grupo de crianças e adolescentes de uma região endémica de África, evoluiu sem tratamento durante 3 anos, e manifestou-se com algumas características clínicas incomuns e notável envolvimento linfático. Destacamos a importância da colaboração entre centros especializados e parcerias institucionais, a fim de fornecer os recursos de diagnósti-co e os cuidados adequados às populações afetadas
After LUX: The LZ Program
The LZ program consists of two stages of direct dark matter searches using
liquid Xe detectors. The first stage will be a 1.5-3 tonne detector, while the
last stage will be a 20 tonne detector. Both devices will benefit tremendously
from research and development performed for the LUX experiment, a 350 kg liquid
Xe dark matter detector currently operating at the Sanford Underground
Laboratory. In particular, the technology used for cryogenics and electrical
feedthroughs, circulation and purification, low-background materials and
shielding techniques, electronics, calibrations, and automated control and
recovery systems are all directly scalable from LUX to the LZ detectors.
Extensive searches for potential background sources have been performed, with
an emphasis on previously undiscovered background sources that may have a
significant impact on tonne-scale detectors. The LZ detectors will probe
spin-independent interaction cross sections as low as 5E-49 cm2 for 100 GeV
WIMPs, which represents the ultimate limit for dark matter detection with
liquid xenon technology.Comment: Conference proceedings from APS DPF 2011. 9 pages, 6 figure
Status of the LUX Dark Matter Search
The Large Underground Xenon (LUX) dark matter search experiment is currently
being deployed at the Homestake Laboratory in South Dakota. We will highlight
the main elements of design which make the experiment a very strong competitor
in the field of direct detection, as well as an easily scalable concept. We
will also present its potential reach for supersymmetric dark matter detection,
within various timeframes ranging from 1 year to 5 years or more.Comment: 4 pages, in proceedings of the SUSY09 conferenc
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