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- A Bannink, J Kogut, +4 authors S Tamminga
- Journal of theoretical biology
- 2006

The purpose of this study was to improve the prediction of the quantity and type of Volatile Fatty Acids (VFA) produced from fermented substrate in the rumen of lactating cows. A model was formulated that describes the conversion of substrate (soluble carbohydrates, starch, hemi-cellulose, cellulose, and protein) into VFA (acetate, propionate, butyrate, and… (More)

- S Catterall, G Thorleifsson, J Kogut, R Renken
- 1983

By a sequence of numerical experiments we demonstrate that generic trian-gulations of the D−sphere for D > 3 contain one singular (D−3)−simplex. The mean number of elementary D−simplices sharing this simplex increases with the volume of the triangulation according to a simple power law. The lower dimension subsimplices associated with this (D − 3)−simplex… (More)

- Jon Kogut, Thomas F. Tomb, Paul S. Parobeck, Andrew J. Gero, Karen L. Suppers
- 1998

The purpose of this study was to quantify the precision of coal mine dust concentration measurements made with state-of-the-art gravimetric techniques and samplers incorporating flow control technology. Using a specially designed, portable dust chamber, twenty-two tests were conducted in an underground coal mine. Each test consisted of collecting 16… (More)

- S Catterall, J Kogut, R Renken
- 1994

We have studied a model which has been proposed as a regularisation for four dimensional quantum gravity. The partition function is constructed by performing a weighted sum over all triangulations of the four sphere. Using numerical simulation we nd that the number of such triangulations containing V simplices grows faster than exponentially with V. This… (More)

Domain wall fermions are defined on a lattice with an extra direction the size of which controls the chiral properties of the theory. When gauge fields are coupled to domain wall fermions the extra direction is treated as an internal flavor space. Here it is found that this is not the case for scalar fields. Instead, the interaction takes place only along… (More)

- W Fischler, J Kogut, Leonard Susskindt, A P Sloan, Foundation Fellow
- 1978

We consider the properties of l-dimensional gauge field-theories at finite temperatures and densities. The massive Schwinger model in the presence of a uniform charge background is shown to form a Wigner crystal which Debye screens charged impurities. The two species Schwinger model with oppositely charged fermions is studied at finite baryon density. This… (More)

- S Catterall, J Kogut, R Renken, G Thorleifsson
- 2008

We measure numerically the distribution of baby universes in the crumpled phase of the dynamical triangulation model of 4d quantum gravity. The relevance of the results to the issue of an exponential bound is discussed. The data are consistent with the existence of such a bound.

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