248 research outputs found
Kufor-Rakeb syndrome, pallido-pyramidal degeneration with supranuclear upgaze paresis and dementia, maps to 1p36
Kufor-Rakeb syndrome is an autosomal
recessive nigro-striatal-pallidal-pyramidal
neurodegeneration. The onset is in the
teenage years with clinical features of Parkinson’s
disease plus spasticity, supranuclear
upgaze paresis, and dementia. Brain
scans show atrophy of the globus pallidus
and pyramids and, later, widespread cerebral
atrophy. We report linkage in Kufor-
Rakeb syndrome to a 9 cM region of
chromosome 1p36 delineated by the markers
D1S436 and D1S2843, with a maximum
multipoint lod score of 3.6.
(J Med Genet 2001;38:680–682
A contribution to the conceptualisation of quality in impact assessment
Quality is much sought after in, and a basic foundation for, good impact assessment (IA). However, the term is rarely defined, has an uncertain relationship with IA effectiveness, and it means different things to different stakeholders, which can lead to debates over the legitimacy associated with an IA process. Thus, IA quality needs conceptualising to position research and practice within broader understandings. This paper contributes to this conceptualisation by identifying nine dimensions of quality through a process of literature review drawing on three fields of study in which quality and quality management have already been debated and conceptualised: education; health care; and business. This approach sidesteps the plural views on quality existing within the field of IA itself which might otherwise bias the identification of quality dimensions. We therefore propose that the dimensions of IA quality are: Efficiency; Optimacy; Conformance; Legitimacy; Equity; Capacity Maintenance; Transformative Capacity; and Quality Management. A literature review of IA research and practice confirms the relevance of the identified quality dimensions to IA. We identify, to an extent, the relationship between quality and effectiveness. Quality aligns with procedural and transactive effectiveness, partly aligns with normative effectiveness and is distinct from, but helps to deliver, substantive effectiveness
Ellipticity in Cosmic Microwave Background as a Tracer of Large-Scale Universe
Wilkinson Microwave Anisotropy Probe (WMAP) 3-year data confirm the
ellipticity of anisotropies of Cosmic Microwave Background (CMB) maps, found
previously for Boomerang and WMAP 1-year high sensitivity maps. The low noise
level of the WMAP latter data enable also to show that, the ellipticity is a
property not described by the conventional cosmological model fitting the power
spectrum of CMB. As a large scale anomaly, the ellipticity characteristics are
consistent with the effect of geodesics mixing occurring in hyperbolic
Universe. Its relation to other large scale effects, i.e. to suppressed low
multipoles, as well as to dark energy if the latter is due to vacuum
fluctuations, is then an arising issue.Comment: to appear in Phys. Lett.
Important marine areas for the conservation of northern rockhopper penguins within the Tristan da Cunha Exclusive Economic Zone
The designation of Marine Protected Areas has become an important approach to conserving marine ecosystems that relies on robust information on the spatial distribution of biodiversity. We used GPS tracking data to identify marine Important Bird and Biodiversity Areas (IBAs) for the endangered northern rockhopper penguin Eudyptes moseleyi within the Exclusive Economic Zone (EEZ) of Tristan da Cunha in the South Atlantic. Penguins were tracked throughout their breeding season from 3 of the 4 main islands in the Tristan da Cunha group. Foraging trips remained largely within the EEZ, with the exception of those from Gough Island during the incubation stage. We found substantial variability in trip duration and foraging range among breeding stages and islands, consistent use of areas among years and spatial segregation of the areas used by neighbouring islands. For colonies with no or insufficient tracking data, we defined marine IBAs based on the mean maximum foraging range and merged the areas identified to propose IBAs around the Tristan da Cunha archipelago and Gough Island. The 2 proposed marine IBAs encompass 2% of Tristan da Cunha’s EEZ, and are used by all northern rockhopper penguins breeding in the Tristan da Cunha group, representing ~90% of the global population. Currently, the main threat to northern rockhopper penguins within the Tristan da Cunha EEZ is marine pollution from shipping, and the risk of this would be reduced by declaring waters within 50 nautical miles of the coast as ‘Areas To Be Avoided
A First Search for coincident Gravitational Waves and High Energy Neutrinos using LIGO, Virgo and ANTARES data from 2007
We present the results of the first search for gravitational wave bursts
associated with high energy neutrinos. Together, these messengers could reveal
new, hidden sources that are not observed by conventional photon astronomy,
particularly at high energy. Our search uses neutrinos detected by the
underwater neutrino telescope ANTARES in its 5 line configuration during the
period January - September 2007, which coincided with the fifth and first
science runs of LIGO and Virgo, respectively. The LIGO-Virgo data were analysed
for candidate gravitational-wave signals coincident in time and direction with
the neutrino events. No significant coincident events were observed. We place
limits on the density of joint high energy neutrino - gravitational wave
emission events in the local universe, and compare them with densities of
merger and core-collapse events.Comment: 19 pages, 8 figures, science summary page at
http://www.ligo.org/science/Publication-S5LV_ANTARES/index.php. Public access
area to figures, tables at
https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=p120000
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