4,864 research outputs found
The Respiratory Form of Pseudorabies in Pigs
Diagnosis of respiratory diseases among growing and finishing swine has become a challenge for food animal practitioners. The incidence and severity of respiratory disease has increased with confinement raising of hogs. Pseudorabies (Aujeszky\u27s Disease. mad itch) caused by Herpesvirus suis. can affect pigs. dogs. cats, cattle, sheep, and goats. There have been no confirmed cases of pseudorabies in horses. Although invariably fatal in other species, pseudorabies virus infection in swine can cause a variety of clinical syndromes characterized by respiratory signs, central nervous system (CNS) symptoms, and reproductive failure. These syndromes vary according to route of infection, viral strain, immune status of the animal and most importantly, age of the pig at the time of infection
Altered Cerebellar Short-Term Plasticity but No Change in Postsynaptic AMPA-Type Glutamate Receptors in a Mouse Model of Juvenile Batten Disease
Juvenile Batten disease is the most common progressive neurodegenerative disorder of childhood. It is associated with mutations in the CLN3 gene, causing loss of function of CLN3 protein and degeneration of cerebellar and retinal neurons. It has been proposed that changes in granule cell AMPA-type glutamate receptors (AMPARs) contribute to the cerebellar dysfunction. In this study we compared AMPAR properties and synaptic transmission in cerebellar granule cells from wild-type and Cln3 knockout mice. In Cln3Δex1–6 cells the amplitude of AMPA-evoked whole-cell currents was unchanged. Similarly, we found no change in the amplitude, kinetics, or rectification of synaptic currents evoked by individual quanta, or in their underlying single-channel conductance. We found no change in cerebellar expression of GluA2 or GluA4 protein. By contrast, we observed a reduced number of quantal events following mossy-fiber stimulation in Sr2+, altered short-term plasticity in conditions of reduced extracellular Ca2+, and reduced mossy fiber vesicle number. Thus, while our results suggest early presynaptic changes in the Cln3Δex1–6 mouse model of juvenile Batten disease, they reveal no evidence for altered postsynaptic AMPARs
Controlling Legionella pneumophila in water systems at reduced hot water temperatures with copper and silver ionization
Background: Hospital-acquired Legionnaires’ disease is associated with the presence of Legionella pneumophila in hospital water systems. In the United Kingdom, the Department of Health recommends maintaining hot water temperatures >55°C and cold water temperatures <20°C at the point of delivery to prevent proliferation of L pneumophila in water systems. In this study, we evaluated the efficacy of copper and silver ionization to control L pneumophila at deliberately reduced hot water temperatures (43°C) within a newly installed water system in a new building linked to a large health care facility in the United Kingdom. / Methods: One thousand, five hundred ninety-eight water samples were collected between September 2011 and June 2017. Samples were tested using accredited methods for L pneumophila, copper and silver ion levels, and total viable counts. Energy consumption and water usage data were also collected to permit carbon emission calculations. / Results: The results of 1,598 routine samples from September 2011 to June 2017, and the recordings of temperatures at outlets in this facility, demonstrated effective (100%) L pneumophila control throughout the study period with an average hot water temperature of 42°C. The energy savings and reduction of carbon emissions were calculated to amount to 33% and 24%, respectively, compared to an equivalent temperature-controlled system. Water system management interventions were required to achieve consistently adequate levels of copper and silver across outlets. / Conclusions: This study demonstrated that it is possible to control L pneumophila independent of temperature when copper and silver ionization is introduced into a new building in conjunction with an appropriately managed water system
Inductive learning spatial attention
This paper investigates the automatic induction of spatial attention
from the visual observation of objects manipulated
on a table top. In this work, space is represented in terms of
a novel observer-object relative reference system, named Local
Cardinal System, defined upon the local neighbourhood
of objects on the table. We present results of applying the
proposed methodology on five distinct scenarios involving
the construction of spatial patterns of coloured blocks
Transnational Legal Practice 2006-2007
Law practice continues to expand across borders, and lawyers and law firms from the United States and other countries are substantially invested in representations that take them outside of their home jurisdictions.[1] Unfortunately, reliable information relating to the extent of internationalization of the legal market is scarce. Neither the number of lawyers and law firms working in the international legal services market nor the receipts generated from internationally-related work are readily and reliably available. Nevertheless, statistics from both the United States and United Kingdom provide a sense of the numbers from the largest present sources of international legal practice.
In the category of outbound services, for example, we can consider how U.S. lawyers and law firms serve foreign clients and U.S.-based clients in their offshore activities. One measure of these services could include the offshore activity of U.S. law firms. The American Lawyer Global 100 includes nine U.S.-based law firms with more than a quarter of their lawyers stationed outside of the United States, three of which support more than 50 percent of their lawyers working from overseas offices.[2] Another study of approximately sixty large U.S. law firms reported that those firms support approximately 375 offices overseas, where approximately 8,000 lawyers are working;[3] three-quarters of these lawyers are working in offices located in Europe. The U.S. Department of Commerce Bureau of Economic Analysis estimates that the export of legal services from the United States generated 914 million, yielding a 4:1 surplus for balance-of-payment accounts.[4] According to the U.K. Department of Constitutional Affairs, British law firms generated ÂŁ1.9 billion in exports in 2003, compared to ÂŁ1.5 billion in imports.[5
Overcharging a Black Hole and Cosmic Censorship
We show that, contrary to a widespread belief, one can overcharge a near
extremal Reissner-Nordstrom black hole by throwing in a charged particle, as
long as the backreaction effects may be considered negligible. Furthermore, we
find that we can make the particle's classical radius, mass, and charge, as
well as the relative size of the backreaction terms arbitrarily small, by
adjusting the parameters corresponding to the particle appropriately. This
suggests that the question of cosmic censorship is still not wholly resolved
even in this simple scenario. We contrast this with attempting to overcharge a
black hole with a charged imploding shell, where we find that cosmic censorship
is upheld. We also briefly comment on a number of possible extensions.Comment: 26 pages, 3 figures, LaTe
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