191,921 research outputs found
Super Mean Labeling of Some Classes of Graphs
No full textApproaching topics as Smarandachely super m-mean labeling, Smarandachely super m-mean graph, super mean labeling, super mean graph
Economics of the Super Bowl
No full textThe Super Bowl is America’s premier sporting event. This paper details basic economic facts about the game and examines the controversy surrounding the purported economic impact of the game on host communities. While the league and sports boosters claim that the game brings up to a $500 million economic impact to host cities, a review of the literature suggests that the true economic impact is a fraction of this amount.sports, stadiums, Super Bowl, impact analysis, football
Economics of the Super Bowl
No full textThe Super Bowl is America’s premier sporting event. This paper details basic economic facts about the game as examines the controversy surrounding the purported economic impact of the game on host communities. While the league and sports boosters claim that the game brings up to a $500 million economic impact to host cities, a review of the literature suggests that the true economic impact is a fraction of this amount.sports, stadiums, Super Bowl, impact analysis, football
Hydrogen Embrittlement Susceptibility of Super Duplex Stainless Steels
No full textThis thesis describes the metallurgical and environmental factors that influence
hydrogen embrittlement of super duplex stainless steels and presents a model
to predict the rate at which embrittlement occurs. Super duplex stainless steel
has an austenite and ferrite microstructure with an average fraction of each
phase of approximately 50%. An investigation was carried out on the
metallurgical and environmental factors that influence hydrogen embrittlement
of super duplex stainless steels.
Tensile specimens of super duplex stainless steel were pre-charged with
hydrogen for two weeks in 3.5% NaCl solution at 50º C at a range of applied
potentials to simulate the conditions that exist when subsea oilfield components
are cathodically protected in seawater. The pre-charged specimens were then
tested in a slow strain rate tensile test and their susceptibility to hydrogen
embrittlement was assessed by the failure time, reduction in cross-sectional
area and examination of the fracture surface.
The ferrite and austenite in the duplex microstructures were identified by
analysing their Cr, Ni, Mo and N contents in an electron microscope, as these
elements partition in different concentrations in the two phases. It was shown
that hydrogen embrittlement occurred in the ferrite phase, whereas the
austenite failed in a ductile manner.
An embrittled region existed around the circumference of each fracture surface
and the depth of this embrittlement depended on the hydrogen charging time
and the potential at which the charging had been carried out. The depth of
embrittlement was shown to correlate with the rate of hydrogen diffusion in the
alloy, which was measured electrochemically using hydrogen permeation and
galvanostatic methods. A two-dimensional diffusion model was used to
calculate the hydrogen distribution profiles for each experimental condition and
the model could be employed to provide predictions of expected failure times in
stressed engineering components
Super-Resolution Microscopy: A Virus’ Eye View of the Cell
No full textIt is difficult to observe the molecular choreography between viruses and host cell components, as they exist on a spatial scale beyond the reach of conventional microscopy. However, novel super-resolution microscopy techniques have cast aside technical limitations to reveal a nanoscale view of virus replication and cell biology. This article provides an introduction to super-resolution imaging; in particular, localisation microscopy, and explores the application of such technologies to the study of viruses and tetraspanins, the topic of this special issue
Super-hydrophobic and super-wetting surfaces: analytical potential?
No full textRoughening or texturing surfaces provides super-liquid repellent or film forming properties without alteration of the surface chemistry. These surfaces are easy to produce, can amplify wetting properties and can be either "sticky" or "slippy" to liquids. Their use as water-repellent coatings is established, but their potential for use in microfluidics and sensor applications remains largely unfulfilled. This article explains several key ideas and suggests why there may be potential for analytical applications
Padding Required: Assessing the Economic Impact of the Super Bowl
No full textCivic boosters generally have estimated the Super Bowl to have an impact of 400 million on a host city’s economy. The National Football League has used the promise of an economic windfall to convince skeptical cities that investments in new stadiums for their teams in exchange for the right to host the event makes economic sense. Evidence from host cities from 1970-2001 indicates the Super Bowl contributes approximately one-quarter of what the boosters have promised and that the game could not have contributed by any reasonable standard of statistical significance, more than $300 million to host economies.football, impact analysis, Super Bowl, sports, mega-event
Unravelling the structure of viral replication complexes at super-resolution
No full textThis work was supported by Biotechnology and Biomedical Sciences Research Council grant BB/H018719/1During infection, many RNA viruses produce characteristic inclusion bodies that contain both viral and host components. These structures were first described over a century ago and originally termed “X-bodies,” as their function was not immediately appreciated. Whilst some inclusion bodies may represent cytopathic by-products of viral protein over-accumulation, X-bodies have emerged as virus “factories,” quasi-organelles that coordinate diverse viral infection processes such as replication, protein expression, evasion of host defenses, virion assembly, and intercellular transport. Accordingly, they are now generally referred to as viral replication complexes (VRCs). We previously used confocal fluorescence microscopy to unravel the complex structure of X-bodies produced by Potato virus X (PVX). Here we used 3D-structured illumination (3D-SIM) super-resolution microscopy to map the PVX X-body at a finer scale. We identify a previously unrecognized membrane structure induced by the PVX “triple gene block” (TGB) proteins, providing new insights into the complex interplay between virus and host within the X-body.Peer reviewe
Super-area 7 (Dassen Island): Expected Situation regarding Exceptional Circumstances for the Next Two Seasons
No full textA time series of the “J index” for rock lobster abundance in Super-area 7, which is calculated to determine whether Exceptional Circumstances are to be declared, is shown in Figure 1. If this “J index” falls below a threshold value of 0.80, then Exceptional Circumstances are declared for this Super-area
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
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