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Abstract

The contribution of mercury and iodine in the particles of atmospheric aerosol and in the surface film of marine waters were estimated in the region of Admiralty Bay, King George Island, South Shetlands. Aerosols were collected with microscopic copper grids and on fibrous filters of microsorban type, and surface film with glassy slides. The obtained data are significant as natural background data.

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Longina Felkier
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Abstract

Asynchronized (doubly-fed) machines with two (three) excitating winding and reversing excitation system allow to control vector of magnetomotive force. This solution allows separating regulation of the electromagnetic torque (active power) and voltage (reactive power). This paper describes the experience in the development and operation of asynchronized turbogenerators and condensers.

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Yury Shakaryan
Pavel Sokur
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Abstract

Rye is an important crop widely cultivated in Europe, but one of the hardest to improve due to its allogamy and self-incompatibility. The market for rye-based products is constantly growing thanks to the popularity of organic farming, feed production and diverse industry applications. To address these demands, new highly productive hybrid rye varieties are needed. Currently, full potential of heterosis in rye breeding is hard to reach due to the limited success in in vitro cultures. This review summarizes the progress in rye in vitro cultures and proposes novel approaches to overcome recalcitrance in this species.

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Authors and Affiliations

Janusz Zimny
Krzysztof Michalski

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