Elongated conductive structures in detonation soot of high explosives.

High values of electrical conductivity are obtained at the detonation of condensed high explosives with the formula C H N O . Such values can be explained only in the framework of the contact conductivity hypothesis. In this case, the conductivity is provided by elongated highly-conductive structures which penetrate the whole space of the detonation wave.

[New mermithid genera and species parasitic in fleas].

A new genus and a new species Imosmermis morosovi gen. sp. n.

[Effect of L-ascorbic and D-isoascorbic acids on induced formation of tyrosine aminotransferase in rat liver].

Administration of ascorbic acid at moderate doses/0.05-0.1 g per kg of body mass/was shown to induce tyrosine transaminase in liver tissue of intact rats.

[New marine parasitic nematode, Abos bathycola, from priapulids and the position of the fam. Marimermithidae in the class Nematoda].

A new genus and species of the marine parasitic nematode Abos bathycola gen. et sp. n.

[Mermithids as biological control agents of blackflies].

About 80 species of mermithids parasitic in blackflies have been recorded from the Ethiopian and Holarctic regions. Species of three genera, Mesomermis, Gastromermis and Isomermis, are most common parasites of blackflies. Critical periods during the ontogenesis of all mermithids are associated with the penetration of infective larvae into the host and protective reactions of the later.

[Certain tasks in the studies of Mermithoidea for biological control of moths].

The method of "flooding" with mermitids, which was successfully used against mosquitoes, is unreal for biological control of black flies because of difficulties and unprofitableness of their laboratory maintenance and reproduction. A more probable way of solving the problem is the untroduction of effective forms of parasites. In perspective the cultivation of the adipose tissue of the host and biochemical overcoming of its protective reactions are necessary.

[Some problems in the study of mermitids for the purpose of the biological control of midges].

The method of "flooding" with mermitids, which was successfully used against mosquitoes, is unreal for biological control of black flies because of difficulties and unprofitableness of their laboratory maintenance and reproduction. A more probable way of solving the problem is the untroduction of effective forms of parasites. In perspective the cultivation of the adipose tissue of the host and biochemical overcoming of its protective reactions are necessary.