1,147 research outputs found
Bovine electrocardiography in normal, tranquilized and certain abnormal animals.
http://www.worldcat.org/oclc/1114500
Electromagnetic Sum Rules and Response Functions from the Symmetry-Adapted No-Core Shell Model
Recent developments in ab initio nuclear structure have provided us with a variety of many-body methods capable of describing nuclei into the medium-mass region of the chart of nuclides. One of these, the symmetry-adapted no-core shell model (SA-NCSM), capitalizes on inherent symmetries of the nucleus and is uniquely suited to examine the underlying physics of dynamical quantities, such as the response function.
We examine the applicability of the SA-NCSM to calculations of these quantities and assess the quality of its inputs by calculating electromagnetic sum rules and response functions with the Lanczos sum rule method and Lanczos response function method, respectively. Our systematic analysis of 4He shows good agreement in the sum rules between the SA-NCSM and hyperspherical harmonics, an exact method. We also detail a novel use of a projection technique to remove spurious center-of-mass contributions to our sum rules. Our calculations for the response functions of 4He, 16O, and 20Ne reveal the advantages of the SA-NCSM when examining giant resonances and we detail a straightforward procedure to calculate the compressibility of nuclear matter from only the microscopic calculations of these response functions.
The results of this work illustrate the ability of the SA-NCSM to reliably and accurately calculate electromagnetic sum rules, as well as its usefulness in providing physically-informed interpretations of electromagnetic response functions. This suggests future work with the SA-NCSM could provide valuable insights, particularly for open-shell nuclei beyond the reach of other methods
Controlling Weeds in Horse and Cattle Pastures
Weed control is one of the most talked about concerns of forage-animal systems. Producers will sometimes pay more attention to some pests than others and more so in some crops than others. For example, a producer may have a very low threshold for weed infestation in their corn, soybean or tobacco field but will have a very high tolerance for weeds in their pastures. This is usually because the “direct” dollar value of the forage is not seen while we can “see” how a reduction in soybean or corn yield will affect the bottom line of our operation. Vegetation manipulation is the only practical way to increase forage for livestock and to improve wildlife habitat on some grasslands (Holechek et al., 2004) especially when land prices prohibit the acquisition of more acreage
Daily Vacation Bible Schools
https://digitalcommons.acu.edu/crs_books/1453/thumbnail.jp
Narco-Submarines: Specially Fabricated Vessels Used for Drug Smuggling Purposes
This work is intended to be an initial primer on the subject of narco-submarines, that is, those specially fabricated vessels utilized principally by Colombian narco traffickers and developed to smuggle cocaine into the United States illicit drug market.https://scholarship.claremont.edu/cgu_facbooks/1029/thumbnail.jp
07401 Abstracts Collection -- Deduction and Decision Procedures
From 01.10. to 05.10.2007, the Dagstuhl Seminar 07401 ``Deduction and Decision Procedures\u27\u27 was held in the International Conference and Research Center (IBFI),
Schloss Dagstuhl.
During the seminar, several participants presented their current
research, and ongoing work and open problems were discussed. Abstracts of
the presentations given during the seminar
as well as abstracts of seminar results and ideas
are put together in this paper
Observation of transverse interference fringes on an atom laser beam
Using the unique detection properties offered by metastable
helium atoms we have produced high resolution images of the transverse
spatial profiles of an atom laser beam. We observe fringes on the beam,
resulting from quantum mechanical interference between atoms that start
from rest at different transverse locations within the outcoupling surface
and end up at a later time with different velocities at the same transverse
position. Numerical simulations in the low output-coupling limit give good
quantitative agreement with our experimental data
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