Results 61 to 70 of about 311,062 (183)
El Magnesio, abundante en praderas pastoreadas por bovinos de leche, actúa como un cofactor en reacciones enzimáticas vitales para las principales vías metabólicas y presenta desaparición ruminal elevada (87%) aunque se desconoce su liberación en fuentes
Wilmer Alfonso Cuervo Vivas +1 more
doaj +1 more source
Eating quality of Holstein bull calves fed only grass or purely herbs matches that of concentrate-fed veal calves [PDF]
Organic meat production from Holstein calves born in dairy herds require that the bull calves are raised outdoor at least 6 months a year, and on large quantities of roughage in the diet.
Jensen, S.K. +2 more
core
Polarons and bipolarons in strongly interacting electron-phonon systems
The Holstein Hubbard and Holstein t--J models are studied for a wide range of phonon frequencies, electron--electron and electron--phonon interaction strengths on finite lattices with up to ten sites by means of direct Lanczos diagonalization. Previously
A. B. Migdal +52 more
core +2 more sources
Respuestas, fisiológicas de vacas Holstein nacidas y recién introducidas al trópico
Una de las formas de incrementar la producción de leche en zonas tropicales, es introducir bovinos especializados en dicha producción como son los de raza Holstein, Suizo Pardo y Jersey.
Francisco I. Juárez Lagunes +1 more
doaj
Este trabajo fue reali2ado con objeto de comparar la composición mineral de pelo obtenido en diferente localización anatómica de bovinos de diferente raza y mantenidos bajo diferentes condiciones de manejo y alimentación, así como también comparar el ...
Martha Payán R. +3 more
doaj
Se analizó el efecto del nivel de producción de leche. sobre la duración de vida productiva (DVP) de ganado Holstein productor de leche en México; definida como la diferencia en días.
Felipe J Ruíz López +2 more
doaj
Coexisting orders in the quarter-filled Hubbard chain with elastic deformations
The electronic properties of the quarter-filled extended Peierls-Holstein-Hubbard model that includes lattice distortions and molecular deformations are investigated theoretically using the bosonization approach.
D. C. Cabra +32 more
core +2 more sources
Intermediate phase of the one dimensional half-filled Hubbard-Holstein model [PDF]
We present a detailed numerical study of the Hubbard-Holstein model in one dimension at half filling, including full finite-frequency quantum phonons. At half filling, the effects of the electron-phonon and electron-electron interactions compete, with ...
R. P. Hardikar, R. T. Clay, T. Ishiguro
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Understanding the Market for Holstein Steers [PDF]
A semi-structured interview process was combined with an econometric analysis to document the newly changed structure of the Holstein sector, to evaluate existing quality perceptions, and to assess the impact that recent changes in production practices ...
Burdine, Kenneth H. +2 more
core +1 more source
Digital Quantum Simulation of the Holstein Model in Trapped Ions
We propose the implementation of the Holstein model by means of digital methods in a linear chain of trapped ions. We show how the simulation fidelity scales with the generation of phononic excitations.
A. Mezzacapo +6 more
core +1 more source

