Products and Processes of Ionization in Methyl Chloride as Determined by a Mass Spectrometer

The following ions were found to be produced in methyl chloride as primary products: CH3Cl+, CH3+, CCl+, CH2+, Cl+, HCl+, CH+ and C+ —- listed in order of decreasing intensity. Small concentrations of the H+ ion were also detected. This latter peak was not investigated completely. The appearance potentials for the CH3Cl+, CH3+ and Cl+ ions are 11.0, 14.7 and 26 volts, respectively

The Prevalence of L. monocytogenes in Cull Sows

The goal of this study was to determine the distribution of Listeria monocytogenes in cull sows and their pork. Two trials were conducted at a single packing plant in 2001 (n=179 cull sows) and in 2002 (n= 160 cull sows). Fecal samples collected antemortem (trial 1) as well as animal tissues, carcass, and environmental swabs, and meat block samples collected at the abattoir (trials 1 and 2) were analyzed. When results from both trials were combined, overall L. monocytogenes was detected in five or 0.17% of the total samples (n=2,858). Specifically, L. monocytogenes was confirmed in a tonsil sample (0.55% of tonsils positive) and in a carcass swab sample (0.56% of carcasses) before the organic acid rinse. L. monocytogenes was recovered in three (1.21%) meat block samples (n=213). These data indicate that L. monocytogenes is present in the cull sow and their pork

Qualitative Analysis and Chemical Equilibrium

21 cm; 621 ha

Qualitative analysis and chemical equilibrium,

xv, 553 p. illus. 22 cm

Metallurgical Laboratory Report 2322 (Del.)

Technical report with short reports on (1) Effect of radiation on organic compounds; (2) Effect of radiation on separation processes; (3) Effect of radiation on water and aqueous systems; and (4) Effect of neutrons on graphite