213 research outputs found
Ralph LeCocq\u27s First Employment Contract, August 1, 1912
Ralph\u27s first job after graduating law school. The contract was for working with E.P. Wanzer, Attorney for Plaintiff or Defendant, in Armour, South Dakota for one year to gain experience.https://nwcommons.nwciowa.edu/lecocqmiscellaneous/1024/thumbnail.jp
Buitenzorg Ayrshire Farm Breeding Diagram
A diagram of a family tree of the Ayrshire cows on Ralph LeCocq\u27s farm, with photos and descriptions.https://nwcommons.nwciowa.edu/lecocqfarm/1000/thumbnail.jp
Quantum nondemolition measurement of a nonclassical state of a massive object
While quantum mechanics exquisitely describes the behavior of microscopic
systems, one ongoing challenge is to explore its applicability to systems of
larger size and mass. Unfortunately, quantum states of increasingly macroscopic
objects are more easily corrupted by unintentional measurements from the
classical environment. Additionally, even the intentional measurements from the
observer can further perturb the system. In optomechanics, coherent light
fields serve as the intermediary between the fragile mechanical states and our
inherently classical world by exerting radiation pressure forces and extracting
mechanical information. Here we engineer a microwave cavity optomechanical
system to stabilize a nonclassical steady-state of motion while independently,
continuously, and nondestructively monitoring it. By coupling the motion of an
aluminum membrane to two microwave cavities, we separately prepare and measure
a squeezed state of motion. We demonstrate a quantum nondemolition (QND)
measurement of sub-vacuum mechanical quadrature fluctuations. The techniques
developed here have direct applications in the areas of quantum-enhanced
sensing and quantum information processing, and could be further extended to
more complex quantum states.Comment: 9 pages, 6 figure
On discretization in time in simulations of particulate flows
We propose a time discretization scheme for a class of ordinary differential
equations arising in simulations of fluid/particle flows. The scheme is
intended to work robustly in the lubrication regime when the distance between
two particles immersed in the fluid or between a particle and the wall tends to
zero. The idea consists in introducing a small threshold for the particle-wall
distance below which the real trajectory of the particle is replaced by an
approximated one where the distance is kept equal to the threshold value. The
error of this approximation is estimated both theoretically and by numerical
experiments. Our time marching scheme can be easily incorporated into a full
simulation method where the velocity of the fluid is obtained by a numerical
solution to Stokes or Navier-Stokes equations. We also provide a derivation of
the asymptotic expansion for the lubrication force (used in our numerical
experiments) acting on a disk immersed in a Newtonian fluid and approaching the
wall. The method of this derivation is new and can be easily adapted to other
cases
The 6 May 1976 Friuli earthquake: re-evaluating and consolidating
The aim of this paper is to propose the creation, in terms of European Macroseismic
Scale (EMS-98), of the entire macroseismic fi eld of the 6 May 1976 Friuli earthquake.
Only forty odd years have passed, and nothwithsatnding that there is a huge quantity
of existing data, it was still disturbing to fi nd that much of the original data are missing
and probably lost forever Efforts have therefore been made to fi nd additional and
still unknown primary data. For the majority of the collected national data sets, a reevaluation
was then possible. This study presents the comprehensive macroseismic
data set for 14 European countries. It is, to our knowledge, one of the largest European
data sets, consisting of 3423 intensity data points (IDPs). The earthquake was felt from
Rome to the Baltic Sea, and from Belgium to Warsaw. The maximum intensity 10
EMS-98 was reached in eight localities in Friuli (Italy). Compared to previous studies,
the Imax values have changed from country to country, in some cases being lowered due
to methodological differences, but in the case of three among the most hit countries,
Imax is now higher than in the previous studies, mainly due to the new data.Published417-4444T. Sismicità dell'ItaliaJCR Journa
Cloning and expression in Escherichia coli of a dog thyroid cDNA encoding a novel inositol 1,4,5-trisphosphate 5-phosphatase
Genes Suggest Ancestral Colour Polymorphisms Are Shared across Morphologically Cryptic Species in Arctic Bumblebees
email Suzanne orcd idCopyright: © 2015 Williams et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Ultrasound assessment of the lateral collateral ligamentous complex of the elbow: imaging aspects in cadavers and normal volunteers
OBJECTIVE: The Lateral Collateral Ligamentous complex (LCL) is an important stabiliser of the elbow. It has a Y-shaped structure with three components. In this study, we sought to describe the ultrasound aspect of the individual components of this ligamentous complex and to evaluate the performance of ultrasound in both cadavers and in normal subjects. METHODS: Ten cadaveric elbow specimens underwent high-frequency ultrasound. Two specimens were sliced and two were dissected for anatomical correlation. Ten elbows of normal subjects were also evaluated by ultrasound. The findings were compared. RESULTS: The three components of the LCL could be visualised in all specimens and normal subjects with the exception of the proximal portion of one specimen. In 80% of the specimens and 100% of the healthy volunteers the proximal portion of the LCL could be separated from the extensor tendons. CONCLUSION: High-resolution ultrasound can assess all components of the LCL of the elbow and can distinguish them from surrounding structures
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