爱沙尼亚学术期刊
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作者:OZLEM ESEN KARTAL , SERHAT AKIN , BERNA HASÇAKIR ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (4), pp.336-353Estonian Academy Publishers
摘要:In this paper, the direct liquefaction of Turkish Niğde-Ulukışla oil shale in noncatalytic and catalytic conditions was studied. The effects of pressure, tetralin/oil shale ratio, catalyst type and concentration, reaction time and temperature and oil shale/waste paper ratio ...
作者:ZHIBING CHANG , MO CHU , CHAO ZHANG ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (4), pp.354-367Estonian Academy Publishers
摘要:In this paper, the effect of several transition metal salts such as FeCl2∙4H2O, CoCl2∙6H2O, NiCl2∙6H2O and ZnCl2 on oil shale pyrolysis was investigated, based on thermal decomposition characteristics and product yields and compositions. The salts were added individuall...
作者:FEI HU , ZHAOJUN LIU , QINGTAO MENG ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (4), pp.312-335Estonian Academy Publishers
摘要:The Songliao Basin is a large Mesozoic oil shale-bearing basin in northeastern China, the resources of which are most abundant, while the rock’s discovered resources are mainly concentrated in the southern part of the basin. The oil shale of the Cretaceous Qingshankou Format...
作者:REIMO LUTTER , TEA TULLUS , ARVO TULLUS ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (4), pp.368-389Estonian Academy Publishers
摘要:The development of forest ecosystem components (tree layer, under­story vegetation and topsoil) in a reclaimed oil shale quarry was evaluated based on the repeated monitoring of sample plots 5 and 15 years after afforestation with hybrid aspen. Trees had been planted directl...
作者:MOSAB MOHAMMEDNOOR , HÜKMÜ ORHAN
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (4), pp.295-311Estonian Academy Publishers
摘要:In this study, organic geochemical characteristics of Upper Pliocene bituminous shale beds in the Akçalar lignite basin, southwest of Konya, Turkey, were investigated using total organic carbon (TOC) and pyrolysis analyses. Additionally, the palaeontological study was carrie...
作者:Jan Suchanicz , Halina Czternastek , Kamila Kluczewska ...
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2017, Vol.66 (4), pp.409-415Estonian Academy Publishers
摘要:A (1-x)BaTiO3–xPb(Zn1/3Nb2/3)O3 ((1-x)BT–xPZN) system with a low content of PZN (x = 0, 0.025, and 0.05) was prepared by the spark plasma sintering process. X-ray diffraction analysis exhibited that the obtained specimens possessed the perovskite structure with tetragonal sy...
作者:Lidia Dzierzbicka-Głowacka , Anna Lemieszek , Artur Nowicki ...
来源:[J].Estonian Journal of Earth Sciences(IF 1.067), 2017, Vol.66 (4), pp.256-273Estonian Academy Publishers
摘要:A population model of the copepod Temora longicornis coupled with the ecosystem model 3D CEMBS (Coupled Ecosystem Model of the Baltic Sea) was used to determine the intra-annual distribution of the species biomass in the Gdańsk Basin (the southern Baltic Sea). The population...
作者:Reinis Drunka , Janis Grabis , Dzidra Jankovica ...
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2017, Vol.66 (4), pp.479-485Estonian Academy Publishers
摘要:TiO2 is promising material for preparing photocatalysts for water splitting and hydrogen production using solar energy. Due to its large band gap 3.2 eV, anatase cannot absorb sun light effectively in visible light (VIS) spectral part. Percious metal nanopraticles are promising d...
作者:Ilze Malina , Nikolajs Juhnevics , Valdis Kampars
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2017, Vol.66 (4), pp.493-500Estonian Academy Publishers
摘要:Two Europium(III) organic complexes (ternary complex Eu(DBM)3(PHEN) and tetrakis complex [Eu(DBM)4]N(Et)4, where DBM is dibenzoylmethane and PHEN is 1,10-phenantroline) were synthesized and their structures proven with 1H-NMR spectroscopy, elemental analysis, FT-IR and mass ...
作者:Olga Malyshkina , Anton Eliseev , Rostislav Grechishkin
来源:[J].Proceedings of the Estonian Academy of Sciences(IF 0.312), 2017, Vol.66 (4), pp.462-466Estonian Academy Publishers
摘要:In the present work, the heat losses of ferroelectric ceramics due to the switching processes were studied in high-amplitude AC electric fields in a wide frequency range of 50 to 1500 Hz. We showed the existence of a correlation between the time dependences of switchable polariza...

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