412 research outputs found
Multiple Migration and Use of Ties: Bangladeshis in Italy and Beyond
This article analyses previous multiple migratory trajectories of Bangladeshifirst generationmigrants before their arrival in Italy and within Italy. It also uncovers the role of social net-works and transnational ties in their multiple migrations. Thefindings show that theirfirstinternational migration was mainly shaped by their family\u2019s socio-economic condition andtransnational kinship networks. They already had someone from their family or close relativesin the preferred country with whom they were connected. Their onward relocations until arriv-ing in Italy, in most cases, was to achieve the socio-economic success and legal status thatthey had failed to attain in theirfirst and subsequent destinations, but the transnational connec-tions with friends or acquaintances are a key resource facilitating these remigrations. Banglade-shis who arrived in Italy from various countries mostly had networks, either with someonefrom their local district in Bangladesh or with their earlier fellow migrants who moved to Italybefore the
A tale worth telling: the impact of the diagnosis experience on disclosure of genetic disorders: Impact of the diagnosis experience on disclosure
Research suggests children with genetic disorders exhibit greater coping skills when they are aware of their condition and its heritability. While the experiences parents have at diagnosis may influence their decision to disclose the diagnosis to their children, there is little research into this communication. The aim of the current study was to examine the relationship between the diagnosis experience and the disclosure experience for parents of children with intellectual disabilities; with a child affected by 22q11.2 deletion syndrome (22q11DS) compared to a group of parents with children affected with other genetic diagnoses, with a similar age of diagnosis (e.g., Fragile X syndrome) and a group where diagnosis generally occurs early (i.e., Down syndrome)
Radiogenic and Muon-Induced Backgrounds in the LUX Dark Matter Detector
The Large Underground Xenon (LUX) dark matter experiment aims to detect rare
low-energy interactions from Weakly Interacting Massive Particles (WIMPs). The
radiogenic backgrounds in the LUX detector have been measured and compared with
Monte Carlo simulation. Measurements of LUX high-energy data have provided
direct constraints on all background sources contributing to the background
model. The expected background rate from the background model for the 85.3 day
WIMP search run is
~events~keV~kg~day
in a 118~kg fiducial volume. The observed background rate is
~events~keV~kg~day,
consistent with model projections. The expectation for the radiogenic
background in a subsequent one-year run is presented.Comment: 18 pages, 12 figures / 17 images, submitted to Astropart. Phy
Identification of Radiopure Titanium for the LZ Dark Matter Experiment and Future Rare Event Searches
The LUX-ZEPLIN (LZ) experiment will search for dark matter particle
interactions with a detector containing a total of 10 tonnes of liquid xenon
within a double-vessel cryostat. The large mass and proximity of the cryostat
to the active detector volume demand the use of material with extremely low
intrinsic radioactivity. We report on the radioassay campaign conducted to
identify suitable metals, the determination of factors limiting radiopure
production, and the selection of titanium for construction of the LZ cryostat
and other detector components. This titanium has been measured with activities
of U~1.6~mBq/kg, U~0.09~mBq/kg,
Th~~mBq/kg, Th~~mBq/kg, K~0.54~mBq/kg, and Co~0.02~mBq/kg (68\% CL).
Such low intrinsic activities, which are some of the lowest ever reported for
titanium, enable its use for future dark matter and other rare event searches.
Monte Carlo simulations have been performed to assess the expected background
contribution from the LZ cryostat with this radioactivity. In 1,000 days of
WIMP search exposure of a 5.6-tonne fiducial mass, the cryostat will contribute
only a mean background of (stat)(sys) counts.Comment: 13 pages, 3 figures, accepted for publication in Astroparticle
Physic
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