Abstract: A monolithically integrated test circuit for testing a digital semiconductor circuit configuration that is formed on the same semiconductor chip and has a large number of elements to be tested. The test circuit has a test data pattern register for temporary storage of a test data pattern, a read and write circuit for writing and reading the data in the test data pattern register to and from the elements to be tested, and a comparison circuit. The comparison circuit tests for any difference between the data written to and read from the elements to be tested. The test circuit has a pattern variation circuit, which can be activated by an activation signal and varies the test data pattern from the test data pattern register before writing into the elements to be tested.

Abstract: Renin-inhibitory di-, tri-, and tetrapeptides of the formula I:A-B-E-G-T-Jin whichA is heterocyclic, substituted heterocyclic etc;B is --N(A.sup.1)CH[(CH.sub.2).sub.2 R.sup.3 ]CO--,E is absent or is --N(A.sup.2)CH[(CH.sub.2).sub.2 R.sup.4 ]CO--;G is ##STR1## and J is --Y--(CH.sub.2).sub.x [CH(R.sup.5)].sub.y --(CH.sub.2).sub.z --R.sup.10and pharmaceutically acceptable salts thereof are disclosed. These compounds inhibit renin and are useful for treating various forms of renin-associated hypertension, hyperaldosteronism and congestive heart failure; compositions containing these renin-inhibitory peptides, optionally with other antihypertensive agents; and methods of treating hypertension, hyperaldosteronism or congestive heart failure or of establishing renin as a causative factor in these problems which employ these novel peptides.

Abstract: Certain 2- and/or 9- phenylalkyl-5,11-dimethyl-5,11-diazaditwistane compounds bind to opiate receptor sites and have central nervous system activities exemplified by analgesia.

Abstract: A new heterocycle, 5,11-diazatetracyclo-[6.2.2.0.sup.2,7.0.sup.4,9 ]dodecane, is prepared by heating an endo-diazatricyclo[6.2.2.0.sup.2,7 ]dodec-11-ene substituted in the 7 and 11 positions with electron withdrawing groups. 2,9-Bis-phenylacetyl derivatives of the new heterocycle and closely related derivatives are potent analgesic agents.

Abstract: A new heterocycle, 5,11-diazatetracyclo]6.2.2.0.sup.2,7.0.sup.4,9 ]dodecane, is prepared by heating an endo-diazatricyclo[6.2.2.0.sup.2,7 ]dodec-11-ene substituted in the 7 and 11 positions with electron withdrawing groups. 2,9-Bis-phenylacetyl derivatives of the new heterocycle and closely related derivatives are potent analgesic agents.

Abstract: A new heterocycle, 5,11-diazatetracyclo[6.2.2.0.sup.2,7.0.sup.4.9 ]dodecane, is prepared by heating an endo-diazatricyclo[6.2.2.0.sup.2,7 ]dodec-11-ene substituted in the 7 and 11 positions with electron withdrawing groups. 2,9-Bis-phenylacetyl derivatives of the new heterocycle and closely related derivatives are potent analgesic agents.