During the prebiotic era, radiolytic transformations in oceans played a key role purifying water from toxic impurities and, thus, formation of aquatic environment our planet, making it suitable for emergence life. Today, planet again faces challenge how to provide people with clean water. Therefore, is reasonable look back at past historical stages and consider possibility neutralizing pollutants by means radiolysis, which has already been tested time. Modern treatments can be much faster...

Thermal decomposition of cellulose can be upgraded by means an electron-beam irradiation to produce valuable organic products via chain mechanisms. The samples being irradiated decompose effectively at temperatures below the threshold pyrolysis inception. Cellulose resembles local “explosion” glucopyranose unit when fast elimination carbon dioxide and water precede formation residual carbonyl or carboxyl compounds. dry distillation performed during gives a liquid condensate where furfural...

This article describes a picosecond solid-state pulsed system, where the input pulse from generator with semiconductor opening switch (SOS) is amplified in power and decreases duration by ferrite gyromagnetic lines. The lines operate Magnetic Compression Line (MCL) mode, which occurs at close values of period oscillations generated line. energy compression system contains three successive stages—MCL1–MCL3 For an 6 GW (490 kV, 40 Ω) 7 ns, pulses 54 (1.62 MV, 48 170 ps have been achieved MCL3...

This article describes a subnanosecond solid-state pulsed power system in which an input pulse from generator with semiconductor opening switch (generator) is amplified and shortened time by two-stage magnetic compressor based on gyromagnetic nonlinear transmission lines. In this approach, the line of each stage operates as compression (MCL) realized when duration close to period oscillations generated line. The contains two series connected lines MCL1 MCL2 wave impedance 40 Ω. has 7 ns...

The circulation treatment of methane with 0.5 MeV electron beam in a cyclone-type reactor, which protects the synthesized products from back degradation, has been studied. As result conversion, content circulating gas can be reduced to 30–43 wt%. main are C2C5 alkanes, and ethane mixture reach almost 40 By-products hydrogen C6C13 high-octane gasoline alkanes. Electron also used concentrate helium natural hydrocarbon mixtures. key control factors for conversion composition feedstock, rate...

A pilot plant for treating 1000 m3/day of dyeing wastewater with e-beam has been constructed and operated since 1998 in Daegu, Korea together the biological treatment facility. The from various stages existing purification process treated an electron beam this plant, it gave rise to elaborating optimal technology increased reliability instant changes composition wastewater. Installation resulted decolorizing destructive oxidation organic impurities wastewater, appreciable reduction chemical...

Пауки семейства Gnaphosidae являются основным элементом аранеофауны юго-востока Европы, особенно аридных и семиаридных ее территорий.Нами обработан обширный материал из коллекции А.В.Пономарёва, собранный в период с 1971 по 2006 гг.в различных районах юга России Западного Казахстана.В представленной статье даются описания 12 новых видов сведения о наиболее интересных находках.В тексте приняты следующие сокращения: А.П.-А.В.Пономарёв, А.Пр.-А.В.Присный, А.Ф.-А.И.Фомичёв, А.Ц.-А

This paper describes a high-current nanosecond generator providing peak power of up to 4 GW, output voltage 0.4–1 MV, pulse length 8–10 ns, and repetition rate 300 Hz in the continuous mode 1 kHz burst operation. The average is 30 kW at kHz. outfitted with an all-solid-state system energy switching. formed by semiconductor opening switch diodes. electric circuit design have been described. Experimental results given. A device for elimination prepulses across load has proposed. Testing...

On the base of novel circuitry approach a SOS-based (Semiconductor Opening Switch) all-solid-state repetitive generator has been developed for various technological and industrial applications. The is equipped with circuit recuperation unused energy reflected back from magnetic compressor. SOS pumped in pumping regime that includes microsecond forward current pause before fast reverse process. As result, total efficiency increased usual value around 40% up to 60-62%. following output...

Aim . Until recently, spider fauna of the Republic South Ossetia has been least studied among regional araneofaunas Caucasus. According to literature data, as little 30 species have known from republic's territory (Mkheidze, 1997, Mikhailov, 1990; Ponomarev, Dvadnenko, 2013; Trilicauscas, Komarov, 2014). Therefore, aim present article is summarize available data on Ossetia. Location. Methods. The material was collected in various districts 2011-2014 by Yu.E. Komarov. Mainly, collecting...

An annotated checklist of spiders recorded from Stavropol Province, based on literaturebased and new data, is provided.The comprises 265 spider species 26 families.Of them, 154 have been Province for the first time.One (Zodarion rubidium Simon, 1914) represents a record to fauna Russia.Eight are illustrated.РЕЗЮМЕ.Приведён список пауков, выявленных в Ставропольском крае (по литературным и собственным данным): вида, семейств.Из них вида впервые отмечаются на территории Ставропольского края.Один вид