2,339 research outputs found
Design and Prototyping of the ATLAS High Level Trigger
This paper outlines the design and prototyping of the ATLAS High Level Trigger (HLT) which is a combined effort of the Data Collection, HLT and PESA (Physics and Event Selection Architecture) subgroups within the ATLAS TDAQ collaboration. Two important issues, already outlined in the ATLAS HLT, DAQ and DCS Technical Proposal [1] will be highlighted: the treatment of the LVL2 Trigger and Event Filter as aspects of a general HLT with a view to easier migration of algorithms between the two levels; unification of the selective data collection for LVL2 and Event Building
The roles of transforming growth factor-β, Wnt, Notch and hypoxia on liver progenitor cells in primary liver tumours
Primary liver tumours have a high incidence and mortality. The most important forms are hepatocellular carcinoma and intrahepatic cholangiocarcinoma, both can occur together in the mixed phenotype hepatocellular-cholangiocarcinoma. Liver progenitor cells (LPCs) are bipotential stem cells activated in case of severe liver damage and are capable of forming both cholangiocytes and hepatocytes. Possibly, alterations in Wnt, transforming growth factor-, Notch and hypoxia pathways in these LPCs can cause them to give rise to cancer stem cells, capable of driving tumourigenesis. In this review, we summarize and discuss current knowledge on the role of these pathways in LPC activation and differentiation during hepatocarcinogenesis
Resonant-tunnelling-assisted crossing for subwavelength plasmonic slot waveguides
We theoretically investigate the properties of crossing for two perpendicular
subwavelength plasmonic slot waveguides. We show that, when encountering nano
intersection, the crosstalk for the direct crossing is around 25%, almost same
as throughout. In terms of symmetry considerations and resonant-tunnelling
effect, we design compact cavity-based structures. Our results show that the
crosstalk is eliminated and the throughput reaches the unity on resonance.
Simulations results are in agreement with those from the coupled-model theory.
When taking into account of the material loss, due to the unchanged symmetry
properties of the modes, the crosstalk is still suppressed. Our results may
open a way to construct nanoscale crossings for high-density nanoplasmonic
integration circuits
Increased susceptibility to proactive interference in adults with dyslexia?
Recent findings show that people with dyslexia have an impairment in serial-order memory. Based on these findings, the present study aimed to test the hypothesis that people with dyslexia have difficulties dealing with proactive interference (PI) in recognition memory. A group of 25 adults with dyslexia and a group of matched controls were subjected to a 2-back recognition task, which required participants to indicate whether an item (mis)matched the item that had been presented 2 trials before. PI was elicited using lure trials in which the item matched the item in the 3-back position instead of the targeted 2-back position. Our results demonstrate that the introduction of lure trials affected 2-back recognition performance more severely in the dyslexic group than in the control group, suggesting greater difficulty in resisting PI in dyslexia.Peer reviewedFinal Accepted Versio
Modeling of chemical processes in the low pressure capacitive RF discharges in a mixture of Ar/C2H2
We study the properties of a capacitive 13.56 MHz discharge properties with a
mixture of Ar/C2H2 taking into account the plasmochemistry and growth of heavy
hydrocarbons. A hybrid model was developed to combine the kinetic description
for electron motion and the fluid approach for negative and positive ions
transport and plasmochemical processes. A significant change of plasma
parameters related to injection of 5.8% portion of acetylene in argon was
observed and analyzed. We found that the electronegativity of the mixture is
about 30%. The densities of negatively and positively charged heavy
hydrocarbons are sufficiently large to be precursors for the formation of
nanoparticles in the discharge volume.Comment: 11 pages, 14 figure
Experimental demonstration of TM lateral leakage in a standard SOI photonics platform
We provide an experimental demonstration of the width dependent losses of the fundamental TM guided mode in fabricated silicon-on-insulator shallow etched ridge waveguides
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