Poisoning and conditioned drinking.

Produced conditioned drinking in 73 male Sprague-Dawley albino rats by conditioned stimuli paired with hypertonic procaine, isotonic procaine, and hypertonic saline, in that order of effectiveness. When these solutions were paired with the taste of saccharin, they produced taste aversions in the same order of effectiveness. Lithium chloride, a well-known poison, produced taste aversions but, in contrast, conditioned decreases in drinking. Like taste aversions which develop after 1 trial, conditioned drinking also developed in 1 trial. Results suggest that procaine and hypertonic saline may be poisons, since the malaise they produce is relieved by drinking, can be classically conditioned, and is indexed by conditioned drinking. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

How good are analyses of oils by GLC?

Analyses of the fatty acid composition of 2 methyl ester mixtures and 13 oils, obtained by collaborators from the AOCS Smalley Gas Chromatography Check Program, were treated statistically. The statistical data may be interpreted to indicate groups of analysts who made a good, satisfactory or poor analysis. The data also indicate the relative degree of difficulty of analyzing the various oils. Coconut oil was the most difficult to analyze while safflower oil offered the least difficulty. A comparison of the precision of results employing the thermal conductivity detector and the flame ionization detector shows no difference. Presented at the AOCS Meeting, Minneapolis, October 1969.     

Class-BD amplifier circuit

An experimental class-BD amplifier circuit is reported, which confirms the previously announced principle of the circuit. Although slightly more complex than the conventional class-AD circuit, filtering problems are simplified, and it may have applications as a high-power amplifier.     

Das Hochofenverfahren als kybernetisches System mit kombinierter Lenkung

Errechnung der Zustandsgrößen des Hochofenverfahrens mit Hilfe eines induktiven und eines deduktiven Modells. Theoretische Grundlagen und mathematische Abhandlung der beiden Modelle. Plausibilitätskontrolle und Berechnung der system- und zeitabhängigen Parameter der Modelle und des Regelvektors im Modulator. Beschreibung des Regelalgorithmus anhand des Zustandsraumes und des Zustandsschaubildes.     

Derepressed alloantigen in transplacentally induced lung tumor coded for by H-2 linked gene

A transplacentally induced lung tumor of strain C3Hf mice grows progressively when transplanted to (C3Hf X A)F1 hybrid mice but not when transplanted to C3Hf recipients. Progressive tumor growth occurs in [(C3Hf X A)F1 X C3Hf] backcross mice inheriting the H-2a haplotype from the F1 parent. Furthermore, radioresistant immunity to the lung tumor can be induced in C3Hf mice by immunization with normal tissue of B10.A and B10.A(2R) but not of B10 or B10.A(5R) strain mice.     

Magnetic properties of cobalt-rare earth magnets for microwave applications

A family of sintered Co-rare earth alloys utilizing Sm, Pr, La, or Ce mischmetal has been developed. Each alloy is designed to optimize one of the following characteristics: 1) Magnets which exhibit magnetic energy products in excess of 20 MG . Oe; 2) Magnets which exhibit reversible demagnetization behavior in adverse fields up to 14 000 Oe; 3) Magnets using inexpensive rare earth metals to maximize the magnetic energy per unit cost. These alloys should extend the range of use of Co-rare earth magnets for microwave devices.