爱沙尼亚学术期刊
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作者:Tiiu Märss , Mark V. H. Wilson , Toomas Saat ...
来源:[J].Estonian Journal of Earth Sciences(IF 1.067), 2017, Vol.66 (1), pp.21-46Estonian Academy Publishers
摘要:In this microichthyological study the teeth and bony cores of gill rakers of three pleuronectiform species [European plaice Pleuronectes platessa Linnaeus, 1758 and European flounder Platichthys flesus trachurus (Duncer, 1892), both in the Pleuronectidae, and turbot Scophtha...
作者:Peep Männik
来源:[J].Estonian Journal of Earth Sciences(IF 1.067), 2017, Vol.66 (1), pp.1-12Estonian Academy Publishers
摘要:Conodonts from the type region of the Oandu Regional Stage (Katian, Upper Ordovician) in NE Estonia were studied. Here, the lower boundary of the stage corresponds to a discontinuity surface at the base of the Hirmuse Formation and, in conodont succession, is marked by the disapp...
作者:Gytautas Ignatavičius , Vaidotas Valskys , Ina Bulskaya ...
来源:[J].Estonian Journal of Earth Sciences(IF 1.067), 2017, Vol.66 (1), pp.13-20Estonian Academy Publishers
摘要:Surface runoff from urbanized territories carries a wide range of pollutants. Sediments in untreated runoff from direct discharge stormwater systems significantly contribute to urban waterway pollution. In this study, heavy metal (Pb, Zn, Cu, Cr, Ba, As and Fe) contamination in s...
作者:Ioanna Merkouriadi , Matti Leppäranta , Onni Järvinen
来源:[J].Estonian Journal of Earth Sciences(IF 1.067), 2017, Vol.66 (1), pp.47-57Estonian Academy Publishers
摘要:The interannual variability of the air temperature, precipitation and snow conditions were examined in the Finnish Arctic region based on data from the period 1946–2012. The purpose of this work was to describe the climatology of the region and to examine long-term variation...
作者:ZHIQIN KANG , JING ZHAO , DONG YANG ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (1), pp.42-54Estonian Academy Publishers
摘要:The micron-scale (µm) pore is the main channel of fluid percola­tion. The evolution of µm-sized pore structures in a cylindrical oil shale sample (φ = 0.82 × 7 mm) at different temperatures was investigated by high-precision micro-computed tomography (micro-CT) scan tec...
作者:Juri Belikov , Arvo Kaldmäe , Vadim Kaparin ...
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2017, Vol.66 (1), pp.89-107Estonian Academy Publishers
摘要:The paper describes the Mathematica-based software for studying nonlinear control systems. The software relies on an algebraic method, called functions’ algebra. The advantage of this approach, over well-known linear algebraic and differential geometric methods is that it is...
作者:ZHAOLIN QI , YALIN LI , CHENGSHAN WANG ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (1), pp.1-14Estonian Academy Publishers
摘要:The Paleocene-Eocene oil shales of the Gongjue Formation in the Nangqian Basin, east-central Tibetan Plateau, were investigated for their petroleum potential by analysis of organic matter (OM) type, source, rich­ness, thermal maturity, and depositional environment. According...
作者:Aivo Anier , Jüri Vain , Leonidas Tsiopoulos
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2017, Vol.66 (1), pp.75-88Estonian Academy Publishers
摘要:Cyber-Physical Systems (CPS) present the greatest challenges but also the greatest opportunities in several critical industrial segments such as electronics, automotive and industrial automation. Governing the complexity and design correctness issues of CPS software requires...
作者:KATI KLEIN , ENELIIS KATTEL , ANNA GOI ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (1), pp.82-96Estonian Academy Publishers
摘要:A combined technological scheme for purification of undiluted high-strength wastewater produced in the shale oil industry was proposed. The initial values of chemical oxygen demand (COD), biological oxygen demand (BOD7) and phenols in the studied pyrogenic wastewater samples...
作者:ROBERT KAROLIN , EDUARD LATÕŠOV , JÜRI KLEESMAA
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (1), pp.70-81Estonian Academy Publishers
摘要:A primary method if used in pulverized oil shale-fired boilers in operation enables one to achieve the target value of SO2 specific emission – 400 mg/Nm3. It is also possible to meet the SO2 specific emission limit value, 200 mg/Nm3, set by the European Union for the new-ins...

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