1,593 research outputs found
Comparative value of dry-rolled corn, distiller’s dried grains, and wheat middlings for receiving diets
Two 28-day receiving experiments were
conducted using 620 exotic × British cross
steers to evaluate differences in growth performance,
morbidity, and mortality when fed diets
containing dry-rolled corn, distiller’s dried grains
with solubles, or wheat middlings. All diets
contained approximately 60% concentrate and
40% roughage (alfalfa hay). Gain and efficiency
tended to be poorer for cattle fed the wheat
middling-based diet than for those fed corn. No
notable differences were evident in terms of the
percentage of cattle treated for respiratory
disease. Feed intake and daily gain were improved
slightly when corn was replaced by
distiller’s dried grains, but efficiency was not
changed. However, the incidence of respiratory
disease also was higher for cattle fed the distiller’s
grains diet in comparison to corn
Applying Psychological Theory to in-game moral behaviors through the development of a purpose-made game
A number of video games involve moral narratives or require the players to make
moral decisions. Research from psychologists has helped to understand the effects that video
game content can have on how individuals think, feel and behave. Recent research has
examined the role of morality in video games, yet there are many inconsistencies in the
findings that could be due to the use of commercial video games for research purposes, which
contain biases such as familiarity with the game and favorite characters. By developing a
bespoke game designed specifically for the purpose of exploring morality, these potential
biases can be reduced. Before designing the game, morality in existing video games is
critically analyzed, using theories from moral psychology. From this, a game was developed
to measure behavioral outcomes through which moral decisions are made; with the aim to
address biases that are inherent in commercial games. Then, the resultant game was used to
investigate how participants make moral choices in video games
Study of Neutron-Induced Ionization in Helium and Argon Chamber Gases
Ion chambers used to monitor the secondary hadron and tertiary muon beam in
the NuMI neutrino beamline will be exposed to background particles, including
low energy neutrons produced in the beam dump. To understand these backgrounds,
we have studied Helium- and Argon-filled ionization chambers exposed to intense
neutron fluxes from PuBe neutron sources ( MeV). The sources emit
about 10 neutrons per second. The number of ion pairs in the chamber gas
volume per incident neutron is derived. While limited in precision because of a
large gamma ray background from the PuBe sources, our results are consistent
with the expectation that the neutrons interact purely elastically in the
chamber gas.Comment: accepted for publication in NIM
Auxiliary particle theory of threshold singularities in photoemission and X-ray absorption spectra: Test of a conserving T-matrix approximation
We calculate the exponents of the threshold singularities in the
photoemission spectrum of a deep core hole and its X-ray absorption spectrum in
the framework of a systematic many-body theory of slave bosons and
pseudofermions (for the empty and occupied core level). In this representation,
photoemission and X-ray absorption can be understood on the same footing; no
distinction between orthogonality catastrophe and excitonic effects is
necessary. We apply the conserving slave particle T-matrix approximation
(CTMA), recently developed to describe both Fermi and non-Fermi liquid behavior
systems with strong local correlations, to the X-ray problem as a test case.
The numerical results for both photoemission and X-ray absorption are found to
be in agreement with the exact infrared powerlaw behavior in the weak as well
as in the strong coupling regions. We point out a close relation of the CTMA
with the parquet equation approach of Nozi{\`e}res et al.Comment: 10 pages, 9 figures, published versio
quantum Heisenberg antiferromagnet on the triangular lattice: a group symmetry analysis of order by disorder
On the triangular lattice, for between and , the classical
Heisenberg model with first and second neighbor interactions presents
four-sublattice ordered ground-states. Spin-wave calculations of Chubukov and
Jolicoeur\cite{cj92} and Korshunov\cite{k93} suggest that quantum fluctuations
select amongst these states a colinear two-sublattice order. From theoretical
requirements, we develop the full symmetry analysis of the low lying levels of
the spin-1/2 Hamiltonian in the hypotheses of either a four or a two-sublattice
order. We show on the exact spectra of periodic samples ( and )
how quantum fluctuations select the colinear order from the four-sublattice
order.Comment: 15 pages, 4 figures (available upon request), Revte
Josephson Current in the Presence of a Precessing Spin
The Josephson current in the presence of a precessing spin between various
types of superconductors is studied. It is shown that the Josephson current
flowing between two spin-singlet pairing superconductors is not modulated by
the precession of the spin. When both superconductors have equal-spin-triplet
pairing state, the flowing Josephson current is modulated with twice of the
Larmor frequency by the precessing spin. It was also found that up to the
second tunneling matrix elements, no Josephson current can occur with only a
direct exchange interaction between the localized spin and the conduction
electrons, if the two superconductors have different spin-parity pairing
states.Comment: 5 pages, 1 figur
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