A finite volume method with grid adaption is applied to two hyperbolic problems: the ultra-relativistic Euler equations, and a scalar conservation law. Both problems are considered in two space dimensions and share the common feature of moving shock waves. In contrast to the classical Euler equation
Tape test as a simple new method for the study of compounds increasing the problem-solving ability of the rat
โ Scribed by E. Ezer; L. Szporny
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 271 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0033-3158
No coin nor oath required. For personal study only.
โฆ Synopsis
A simple new method, the "tape test" has been developed for studying the enhancement of learning by drugs in "learning-dull" rats. A piece of adhesive tape is pressed on the left front pad of the rats. The time of tape removal by the animal, i.e., the problem-solving time is measured. In our experiments the selected leraning-dull rats were used which were unable to remove the tape within 60 s observed on 3 consecutive days. The problem-solving ability of the rats was studied on 4 consecutive days, by posttriat administration. The problem-solving ability was found to be increased after treatment with different drugs such as para-chlorphenylalanine (PCPA), pemolin, orotic acid, vitamin B12. The stimulatory effect of vitamin B12 could be inhibited by vincristine.
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