Narrow Technihadron Production at the First Muon Collider

In modern technicolor models, there exist very narrow spin-zero and spin-one neutral technihadrons---$pi^0_T$, $rho^0_T$ and $omega_T$---with masses of a few 100 GeV. The large coupling of $\pi^0_T$ to $\mu^+\mu^-$, the direct coupling of $rho^0_T$ and $omega_T$ to the photon and $Z^0$, and the superb energy resolution of the First Muon Collider may make it possible to resolve these technihadrons and produce them at extraordinarily large rates.Comment: 11 pages, latex, including 2 postscript figure

Charge assignments in multiple-U(1) gauge theories

We discuss the choice of gauge field basis in multiple-U(1) gauge theories. We find that there is a preferred basis, specified by the charge orthogonality condition, in which the U(1) gauge fields do not mix under one-loop renormalization group running.Comment: 7 pages, LaTe

Bacteriology of cheese I. Effect of pasteurizing the milk on the nitrogenous decomposition in Cheddar cheese

The effect of pasteurizing the milk on the nitrogenous decomposition in cheddar cheese was studied with nine series of cheese. Each of six series contained two cheese, manufactured at the same time from equal portions of the same lot of milk, one cheese being made from raw milk and one from pasteurized milk. Each of three series contained three cheese; one cheese was made from raw milk, one from pasteurized milk, and one from 90 percent pasteurized and 10 percent raw milk. Changes in the nitrogen distribution in the cheese were determined by chemical analyses of cheese serum at intervals during ripening. The cheese serum was obtained by submitting a mixture of finely divided cheese and sand to relatively high pressures in a laboratory press. The analyses of the cheese serum included determinations of total nitrogen, amino nitrogen and various nitrogen fractions which were soluble or insoluble in trichloracetic acid, ethyl alcohol, phosphotungstic acid, or tungstic acid. The cheese was scored for flavor and the flavor criticized at the same periods that chemical analyses were made. In all of the cheese there was a steady breaking down of the proteins as indicated by increases in the various nitrogen fractions determined. During the early stages of ripening, there was little variation in the amounts of the various fractions in the serums of the raw and the pasteurized milk cheese. After longer ripening, the amounts of the various nitrogen fractions were definitely larger in the serum of the raw milk cheese than in the serum of the pasteurized milk cheese, which indicates a more rapid and extensive breakdown of the proteins in the cheese made from raw milk. After about 2 months of ripening the flavor scores of the cheese made from raw milk were regularly higher than those of cheese made from pasteurized milk. The cheese made from pasteurized milk was generally characterized by a lack of flavor and a tough rubbery body. The amounts of the various nitrogen fractions in the serum of the cheese made from 90 percent pasteurized and 10 percent raw milk were usually intermediate between the corresponding values for the raw milk and the pasteurized milk cheese, although they more nearly approached the values for the raw milk cheese than those for the pasteurized milk cheese. The cheese made from the mixed milk developed a flavor essentially the same as that of the raw milk cheese and did not lack flavor as did the cheese made from pasteurized milk. The high quality cheese, which was made from raw milk or a mixture of raw and pasteurized milk, was regularly characterized by the presence, in the cheese serum, of relatively large amounts of the nitrogen fraction soluble in trichloracetic acid but insoluble in ethyl alcohol, and also by the presence of relatively small amounts of the fraction insoluble in trichloracetic acid

Bacteriology of cheese III. Some factors affecting the ripening of Blue (Roquefort type) cheese

BIue cheese (roquefort type) represents a cheese type of considerable commercial importance in the United States. It is not only consumed in the natural condition but is also used in making various products, such as cheese spreads, salad dressing, etc. Much of the blue cheese used in the United States is imported from various European countries. Although this type of cheese has been made in the United States from cows\u27 milk for some time, the industry has not developed to any extent. In the various attempts to expand the blue cheese industry, American manufacturers have met with a number of difficulties. These include (a) the failure of the cheese to develop enough of the characteristic flavor in a reasonable length of time, (b) the failure of the mold to develop properly in the cheese, (c) the lack of uniformity in successive · lots of cheese, (d) the yellow color of the cheese, especially when made during the period of luxuriant pastures and (e) the relatively high cost of manufacture as compared to that in certain other countries

Bacteriology of cheese II. Effect of Lactobacillus casei on the nitrogenous decomposition and flavor development in cheddar cheese made from pasteurized milk

The extensive use of pasteurization with various dairy products, for the destruction of disease-producing organisms that may be present and for the improvement of the keeping qualities, suggests that the process may have important advantages in the cheese industry. Cheddar cheese made from pasteurized m.ilk with the usual cheese cultures tends to ripen slowly and lack flavor and aroma so that, if a desirable product is to be obtained, the use of additional cultures in the milk seems necessary. Bacteriological studies on cheddar cheese made from raw milk have shown that Lactobacillus casei commonly grows extensively in the product and that often enormous numbers are present after some weeks of ripening. These results suggest that there may be an advantage in adding L. casei to pasteurized milk to be made into cheddar cheese. This is especially true when the pasteurization exposures are high enough to insure the destruction of any disease-producing organisms present. Such exposures would be expected to destroy a large percentage of the total organisms in the raw milk. In the past much of the pasteurized milk made into cheddar cheese in certain areas has been flash pasteurized at relatively low temperatures, the primary purpose being to control objectionable fermentations in the cheese

Bacteriology of cheese VI. Relationship of fat hydrolysis to the ripening of cheddar cheese

Cheese made from raw homogenized cream mixed with skimmilk (raw or pasteurized) commonly developed a rancid flavor early in the ripening, but the condition tended to disappear as ripening progressed, and eventually the cheese was not rancid and was more satisfactory in flayor than cheese made from pasteurized milk or from pasteurized homogenized cream mixed with pasteurized skimmilk. In some cases it was more satisfactory in flavor than cheese made from raw milk. Cheese made from pasteurized milk had very low fat acidities and lacked flavor, whereas cheese having definitely higher fat acidities commonly had more flavor. Raw milk cheese had lower fat acidities than that made from raw homogenized cream with skimmilk but somewhat higher acidities than that made from pasteurized homogenized cream with pasteurized skimmilk. Addition of pancreatin to pasteurized milk for cheese resulted in a disagreeable rancid flavor immediately after manufacture, and the condition did not disappear during ripening. In most instances the ripened cheese also was bitter

Characterization of Thin Film Materials using SCAN meta-GGA, an Accurate Nonempirical Density Functional

We discuss self-consistently obtained ground-state electronic properties of monolayers of graphene and a number of beyond graphene compounds, including films of transition-metal dichalcogenides (TMDs), using the recently proposed strongly constrained and appropriately normed (SCAN) meta-generalized gradient approximation (meta-GGA) to the density functional theory. The SCAN meta-GGA results are compared with those based on the local density approximation (LDA) as well as the generalized gradient approximation (GGA). As expected, the GGA yields expanded lattices and softened bonds in relation to the LDA, but the SCAN meta-GGA systematically improves the agreement with experiment. Our study suggests the efficacy of the SCAN functional for accurate modeling of electronic structures of layered materials in high-throughput calculations more generally

Vacuum Alignment in Technicolor Theories-I. The Technifermion Sector

We have carried out numerical studies of vacuum alignment in technicolor models of electroweak and flavor symmetry breaking. The goal is to understand alignment's implications for strong and weak CP nonconservation in quark interactions. In this first part, we restrict our attention to the technifermion sector of simple models. We find several interesting phenomena, including (1) the possibility that all observable phases in the technifermions' unitary vacuum-alignment matrix are integer multiples of \pi/N' where N' \le N, the number of technifermion doublets, and (2) the possibility of exceptionally light pseudoGoldstone technipions.Comment: 19 pages, Latex with one postscript figur