The R3-N3 and R5-N5 Palaeomagnetic Transition Zones in SW-Iceland Revisited.

Synthesis and Antitubercular Activity of N3,N5-Diaryl-4-(5-arylisoxazol-3-yl)-1,4-dihydropyridine-

5-Arylisoxazolyl-3-carboxaldehydes were condensed with N-aryl acetoaceta¬mide and ammonium acetate in methanol to give N3,N5-diaryl-4-(5-arylisoxazol-3-yl)-1,4-dihydropyridine-3,5-dicarboxamides. All compounds were screened for their antitubercular activity against Mycobacterium tuberculosis (H37Rv). The results for new synthesized compounds showed a moderate activity in comparison to rifampicin.

What are the roles of N3 and N5 rings in designing polynitrogen molecules?

A series of polynitrogen molecules composed by multiple cyclic-N(3) and/or cyclic-N(5) are systematically investigated by using DFT and MP2 methods. It is found that all energetically favored structures appear with a corner to corner connection between two rings for the cyclic-N(3) and/or the cyclic-N(5). Furthermore, straight interaction between the N(3)-rings would decrease the stability of c...

Health Systems in Transition Iceland

DNS zones revisited

Recent research suggests that, due to misconfiguration, DNS reliability and performance is not always as good as it should be. This paper therefore investigates the correct configuration of DNS zones, by checking if main configuration requirements, recommendations and bestpractices rules have been followed. Our research shows that almost one out of four zones fail to pass one or more of our tes...

Mastering Reinjection in the Hellisheidi Field, Sw-iceland: a Story of Successes and Failures

Reinjection has posed a major problem in the operation of the Hellisheidi Power Plant, SWIceland. The formation temperature at the originally planned reinjection zone proved to be very hot (>300°C) when injection wells were drilled there. In order to be able to use that zone for production a new reinjection zone was planned. The new zone has been promising despite problems in operating the new ...