10 research outputs found
Effect of sodium bicarbonate and sodium bentonite on digestion and rumen fermentation characteristics of forage sorghum silage-based diets fed to growing steers
One percent sodium bicarbonate (NaHCo3) increased intake of a 50% silage - 50% grain diet, but had no effect on intake of a full-feed sorghum silage diet. The addition of concentrate (rolled milo) slightly lowered rumen pH and decreased acid detergent fiber (ADF) and starch digestion. NaHC03 had no effect on digestibility, but 2% bentonite lowered digestibility of NDF and ADF. Neither compound affected rumen fermentation characteristics.; Dairy Day, 1985, Kansas State University, Manhattan, KS, 1985
Topological doping and the stability of stripe phases
We analyze the properties of a general Ginzburg-Landau free energy with
competing order parameters, long-range interactions, and global constraints
(e.g., a fixed value of a total ``charge'') to address the physics of stripe
phases in underdoped high-Tc and related materials. For a local free energy
limited to quadratic terms of the gradient expansion, only uniform or
phase-separated configurations are thermodynamically stable. ``Stripe'' or
other non-uniform phases can be stabilized by long-range forces, but can only
have non-topological (in-phase) domain walls where the components of the
antiferromagnetic order parameter never change sign, and the periods of charge
and spin density waves coincide. The antiphase domain walls observed
experimentally require physics on an intermediate lengthscale, and they are
absent from a model that involves only long-distance physics. Dense stripe
phases can be stable even in the absence of long-range forces, but domain walls
always attract at large distances, i.e., there is a ubiquitous tendency to
phase separation at small doping. The implications for the phase diagram of
underdoped cuprates are discussed.Comment: 18 two-column pages, 2 figures, revtex+eps
Effect of sodium bicarbonate and sodium bentonite on digestion and rumen fermentation characteristics of forage sorghum silage-based diets fed to growing steers
One percent sodium bicarbonate (NaHCo3) increased intake of a 50% silage
- 50% grain diet, but had no effect on intake of a full-feed sorghum silage diet.
The addition of concentrate (rolled milo) slightly lowered rumen pH and
decreased acid detergent fiber (ADF) and starch digestion. NaHC03
had no effect on digestibility, but 2% bentonite lowered digestibility of NDF and ADF.
Neither compound affected rumen fermentation characteristics
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Studies of the lattice dynamics and phase transitions in 1T--TiSe/sub 2/ and 2H--TaSe/sub 2/
Neutron inelastic scattering measurements have been carried out to study the lattice dynamics associated with the 200K phase transition in the layered semimetal IT--TiSe/sub 2/. Dispersion relations for many modes with energies below 20 MeV have been measured. The soft transverse mode, which is involved in the transition, has been located and its temperature dependence examined. These results will be compared to data previously reported on the lattice dynamics of the charge-density-wave transition in 2H--TaSe/sub 2/