7,041 research outputs found
Set-up and characterization of a humidity sensor realized in LTCC-technology
A new type of integrated temperature and humidity sensor applying
LTCC-technology has been developed and characterized. In this approach, sensing
elements are implemented using heated metal resistors (Pt-elements), where one
is exposed to the humid environment that causes the sensor element to cool down
with increased humidity, while the other one is sealed from the environment.
Sensor design is based on FEA (Finite Element Analyses) where the critical
design parameters have been analyzed with regard to the performance
characteristic of the device. The set-up of sensor element will be shown and
the functional capability will be demonstrated by experimental results.Comment: Submitted on behalf of EDA Publishing Association
(http://irevues.inist.fr/EDA-Publishing
Continuous Time Monte Carlo for Lattice QCD in the Strong Coupling Limit
We present results for lattice QCD in the limit of infinite gauge coupling,
obtained from a worm-type Monte Carlo algorithm on a discrete spatial lattice
but with continuous Euclidean time. This is obtained by sending both the
anisotropy parameter gamma^2 \sim a/a_t and the number of time-slices N_\tau to
infinity, keeping the ratio \gamma^2/N_\tau \sim aT fixed. The obvious gain is
that no continuum extrapolation N_\tau -> \infty has to be carried out.
Moreover, the algorithm is faster and the sign problem disappears. We compare
our computations with those on discrete lattices. We determine the phase
diagram as a function of temperature and baryon chemical potential.Comment: 4 pages, Proceedings for Quark Matter 2011 Conference, May 23-28,
2011, Annecy, Franc
The violent interstellar medium in Messier 31
Taurus observations in the line of H alpha and Very Large Array (VLA) HI mapping of the HII complex No. 722 in M31, reveal what seems to be a spherical cavity 330 pc in diameter blown out by a stellar association of over 20(exp 6) years old. Evidence of induced star formation which was initiated less than 5(exp 6) years ago is present in the form of bright HII emission and numerous O, B and Wolf-Rayet stars which are found within the shell surrounding the cavity. The energy necessary to create the HI shell is estimated to be about 5(exp 51) erg
Chapter Markets and Merchants: Commercial and Cultural Integration in Northwest Europe, 1300-1700
Between the thirteenth and seventeenth centuries commerce in northern Europe expanded and contracted. The long term net effect of the trade increase was an overall substantial impact on the economy and on the culture of the lands around the North and Baltic Seas. The development of interdependent markets can be indicated by examining the tendency of prices to converge in different places. Relying on previous research and novel ways of constructing indices using price data from a number of ports in northern Europe it is possible to confirm both the long term direction, with ups and downs, toward market integration as well as the emergence in the sixteenth and seventeenth centuries of regional markets in certain food grains
Legitimating inaction : differing identity constructions of the Scots language.
The Scots language plays a key role in the political and cultural landscape of contemporary Scotland. From a discourse-historical perspective, this article explores how language ideologies about the Scots language are realized linguistically in a so-called âlanguages strategyâ drafted by the Scottish Executive, and in focus groups consisting of Scottish people. This article shows that although the decline of Scots is said to be a âtragedyâ, focus group participants seem to reject the notion of Scots as a viable, contemporary language that can be used across a wide range of registers. The policy document also seems to construct Scots in very positive terms, but is shown to be unhelpful or potentially even damaging in the process of changing public attitudes to Scots
Resolved Spectroscopy of the Narrow-Line Region in NGC 1068: Kinematics of the Ionized Gas
We have determined the radial velocities of the [O III] emitting gas in the
inner narrow-line region (NLR) of the Seyfert 2 galaxy NGC 1068, along a slit
at position angle of 202 degrees, from STIS observations at a spatial
resolution of 0.1 arcsec and a spectral resolving power of approximately 1000.
We use these data to investigate the kinematics of the NLR within 6 arcsec (430
pc) of the nucleus. The emission-line knots show evidence for radial
acceleration, to a projected angular distance of 1.7 arcsec in most cases,
followed by deceleration that approaches the systemic velocity at a projected
distance of about 4 arcsec. We find that a simple kinematic model of biconical
radial outflow can match the general trend of observed radial velocities. In
this model, the emitting material is evacuated along the bicone axis, and the
axis is inclined 5 degrees out of the plane of the sky. The acceleration of the
emission-line clouds provides support for dynamical models that invoke
radiation and/or wind pressure. We suggest that the deceleration of the clouds
is due to their collision with a patchy and anistropically distributed ambient
medium.Comment: 18 pages, Latex, includes 3 figures in postscript, to appear in the
Astrophysical Journal Letter
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