Animal Husbandry through the Years at the University of Nebraska

From the establishment of the Agricultural College in 1872 to the present day (1962). Foreword Introduction The Agricultural College The Crowning Years The Research Program Farmers Institutes Extension Activities Emergency Programs Extra Curricular Activities Personnel Publications This review is limited primarily to the Animal Husbandry Department. However, in an organization as closely knit as the College of Agriculture, it is impossible not to make occasional reference to other departments and activities. The narrative is confined largely to the organization at Lincoln, although some reference is made of work and workers at outlying stations. 52 page

EC228 Revised 1933 Farm Slaughter of Hogs

Extension Circular 228 Revised 1933 discusses the farm slaughter of hogs

Growth in Weight of Selected Organs, Tissues and Systems in the Pig

As a result of investigations at the Nebraska Agricultural Experiment Station in 1929, 1930 and 1931 to determine the effect of weight and degree of fatness of the pork carcass upon the quality and palatability of the meat, 40 pigs were slaughtered, five each at the approximate live weights of 70, 80, 90, 100, 115, 135, 160, and 180 kg. This corresponds to carcass weights ranging from 50 to 150 kg. The results of the meat investigations and feedlot data were reported elsewhere (Loeffel et al.,1943). This study reports data relative to the weight of selected tissues and organs, as determined by dissection at slaughtering time

Using mixed data in the inverse scattering problem

Consider the fixed-$\ell$ inverse scattering problem. We show that the zeros of the regular solution of the Schr\"odinger equation, $r_{n}(E)$, which are monotonic functions of the energy, determine a unique potential when the domain of the energy is such that the $r_{n}(E)$ range from zero to infinity. This suggests that the use of the mixed data of phase-shifts $\{\delta(\ell_0,k), k \geq k_0 \} \cup \{\delta(\ell,k_0), \ell \geq \ell_0 \}$, for which the zeros of the regular solution are monotonic in both domains, and range from zero to infinity, offers the possibility of determining the potential in a unique way.Comment: 9 pages, 2 figures. Talk given at the Conference of Inverse Quantum Scattering Theory, Hungary, August 200

Pade approximants and the anharmonic oscillator

The diagonal Padé approximants of the perturbation series for the eigenvalues of the anharmonic oscillator (a βκ^1 perturbation of p^2 + κ^2) converge to the eigenvalues

EC238 Feeding Small Grains to Live Stock

Extension Circular 238 discusses feeding small grains to live stock

Piecewise constant potentials and discrete ambiguities

This work is devoted to the study of discrete ambiguities. For parametrized potentials, they arise when the parameters are fitted to a finite number of phase-shifts. It generates phase equivalent potentials. Such equivalence was suggested to be due to the modulo $\pi$ uncertainty inherent to phase determinations. We show that a different class of phase-equivalent potentials exists. To this aim, use is made of piecewise constant potentials, the intervals of which are defined by the zeros of their regular solutions of the Schr\"odinger equation. We give a classification of the ambiguities in terms of indices which include the difference between exact phase modulo $\pi$ and the numbering of the wave function zeros.Comment: 26 pages Subject: Mathematical Physics math-p

Pade approximants and the anharmonic oscillator

The diagonal Padé approximants of the perturbation series for the eigenvalues of the anharmonic oscillator (a βκ^1 perturbation of p^2 + κ^2) converge to the eigenvalues