1,066 research outputs found
Hay Quality Sensory Evaluation Form - Mixed Cereal/Pea or Vetch
Hay Quality Sensory Evaluation Form – Mixed Cereal/Pea or Vetc
Hay Quality Sensory Evaluation Form - Timothy; Export & Horse
Hay Quality Sensory Evaluation Form – Timothy; Export & Hors
The Isovector Quadrupole-Quadrupole Interaction Used in Shell Model Calculations
An interaction is used
in a shell model calculation for . Whereas for the state
is two-fold degenerate, introducing a negative causes an `isovector'
state to come down to zero energy at and an triplet
() to come down to zero energy at . These are
undesirable properties, but a large negative is apparently needed to fit
the energy of the isovector giant quadrupole resonance.Comment: 12 pages, revtex, 2 figures (available on request
Recommended from our members
Stream temperatures, riparian vegetation, and channel morphology in the Upper Grande Ronde River Watershed, Oregon
The Upper Grande Ronde River Watershed in northeastern Oregon is considered important habitat for threatened stocks of chinook
salmon (Oncorhynchus tshawytscha). Documented reductions in channel complexity and riparian vegetation within the watershed have increased concern over loss of viable habitat. An important component of salmonid habitat is stream temperature during critical
summer periods. In general, annual maximum stream temperatures and diurnal fluctuations in the Upper Grande Ronde River were found to
reflect local reach characteristics, position in the drainage, and large-scale changes in valley shape. Stream temperatures on the
Grande Ronde River at a distance of 71 km from the watershed divide exceeded 14°C, the "upper preferred temperature" for chinook salmon, more than 90% of time in July of 1991 and in July and August of 1992. While the occurrence of temperatures above 14°C were less common in the headwaters of the Grande Ronde River, downstream of a large meadow (i.e., Vey Meadow) (29 km from the divide) 14°C was exceeded at least 60% of the time during the same three month period. Seven-day maximum stream temperatures on the Upper Grande Ronde River ranged between 17.9°C and 26.6°C in 1991 and between 19.1°C and 26.7°C in 1992. Diel fluctuations on the mainstem were greatest immediately below Vey Meadow (about 12°C) but tended to stabilize at approximately 8°C at distances of over 49 km from the divide. Maximum stream temperatures in tributaries of the Upper Grande Ronde River varied by as much as 11°C (during 1992), reflecting large differences in stream cover, aspect, and flow. The timing of annual maximums seemed to be strongly linked to aspect during 1992. In addition, the high-elevation, forested tributaries had annual maximum stream temperatures and diel fluctuations which were 3°C lower than those associated with more open, low-elevation sites. Relationships between stream temperatures, riparian vegetation, and channel morphology characteristics were evaluated for 11 tributary reaches. Differences in stream cover, average flow
velocity, bankfull depth and percent undercut bank were found to be significantly (p <0.1) related to maximum stream temperatures and/or
average August diel fluctuations based on linear regression models. A stream temperature prediction model (i.e., TEMP-86) was found to be an accurate predictor of average hourly strew temperatures through short 250-m long reaches. An average WSTAT (a
measure of model accuracy) of -0.18°C was calculated based on 11 reaches though two reaches led to consistent over- and under-predictions of downstream temperatures. A series of temperature simulations using TEMP-86 and combinations of wetted width and
percent stream cover suggest that lower maximum daily stream temperatures would be observed through altered reaches if concurrent changes in both parameters occurred
Collective Excitations of (154)Sm nucleus at FEL{gamma}+LHC Collider
The production of collective excitations of the (154)Sm at FEL{gamma}+LHC
collider is investigated. We show that this machine will be a powerful tool for
investigation of high energy level excitations.Comment: 6 pages, 1 figure, 4 table
Competing electric and magnetic excitations in backward electron scattering from heavy deformed nuclei
Important contributions to the cross sections of
low-lying orbital excitations are found in heavy deformed nuclei, arising
from the small energy separation between the two excitations with and 1, respectively. They are studied microscopically in QRPA using
DWBA. The accompanying response is negligible at small momentum transfer
but contributes substantially to the cross sections measured at for fm ( MeV)
and leads to a very good agreement with experiment. The electric response is of
longitudinal type for but becomes almost purely
transverse for larger backward angles. The transverse response
remains comparable with the response for fm
( MeV) and even dominant for MeV. This happens even at
large backward angles , where the dominance is
limited to the lower region.Comment: RevTeX, 19 pages, 8 figures included Accepted for publication in Phys
Rev
Large-Scale Transition of Economic Systems Do CEECs Converge Towards Western Prototypes?
Constrained Willmore Surfaces
Constrained Willmore surfaces are conformal immersions of Riemann surfaces
that are critical points of the Willmore energy under compactly
supported infinitesimal conformal variations. Examples include all constant
mean curvature surfaces in space forms. In this paper we investigate more
generally the critical points of arbitrary geometric functionals on the space
of immersions under the constraint that the admissible variations
infinitesimally preserve the conformal structure. Besides constrained Willmore
surfaces we discuss in some detail examples of constrained minimal and volume
critical surfaces, the critical points of the area and enclosed volume
functional under the conformal constraint.Comment: 17 pages, 8 figures; v2: Hopf tori added as an example, minor changes
in presentation, numbering changed; v3: new abstract and appendix, several
changes in presentatio
Non-Scissors-Mode Behaviour of Isovector Magnetic Dipole Orbital Transitions Involving Isospin Transfer
We study the response of isovector orbital magnetic dipole (IOMD) transitions
to the quadrupole-quadrupole () interaction, to the
isospin-conserving pairing interaction (ICP) and to combinations of both. We
find qualitatively different behaviours for transitions in which the final
isospin differs from the initial isospin versus cases where the two isospins
are the same. For even-even nuclei with ground states
such as and , the summed IOMD from the ground
state to all the states in the space does not
vanish when the interaction is turned off. The pairing interaction
(ICP) alone leads to a finite transition rate. For nuclei with
ground states such as and , the summed IOMD
vanish when the interaction is turned off, as is expected in
a good scissors-mode behaviour. However this is not the case for the
corresponding sum of the IOMD transitions. In (but not
in ) the sum of the IOMD transitions is remarkably
insensitive to the strengths of both the and the ICP interactions.
In an energy weighted-sum is similarly insensitive. All our
calculations were carried out in the space.Comment: 19 pages (including 5 figures). submitted to Nucl. Phys.
- …