爱沙尼亚学术期刊
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作者:NI PAN , CHANGCHENG CHEN , YONGHUA YOU ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (2), pp.167-180Estonian Academy Publishers
摘要:This paper presents a new mathematical model of the heat transfer characteristics for oil shale particles during the retorting. In this process, the heat transfer within oil shale particles affects shale oil yield and energy consumption. To explore the heat transfer characte...
作者:XUE-QING ZHANG , YA-SONG LI
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (2), pp.146-154Estonian Academy Publishers
摘要:Bacillus mucilaginosus (B. mucilaginosus) and Thiobacillus ferrooxidans (T. ferrooxidans) have been earlier shown to be conducive to the demineralization of oil shale and thus improve shale oil yield. In this study, the combined effect of the two bacteria was investigated an...
作者:JING-XUAN YANG , GUO-GANG SUN , YU-MING ZHANG ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (2), pp.155-166Estonian Academy Publishers
摘要:The maximum efficiency inlet velocity (MEIV) of the oil shale ash cyclone separator was explored in this paper. The results show that the inlet area of the separator has a significant effect on MEIV. Further analysis revealed that the cross-sectional mean axial velocity for the g...
作者:OMAR SALIM AL-AYED , MOHAMMAD WALEED AMER , MOHAMMED MATOUQ
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (2), pp.181-194Estonian Academy Publishers
摘要:The oil shale (OS) sample from Sultani mine, southern Jordan, was subjected to thermogravimetric/differential thermogravimetric (TG/DTG) and differential scanning calorimetry (DSC) analysis. Analysis was used to determine the kinetic parameters in the 300–540 °C temperature ...
作者:XIANGXIN HAN , BIN CHEN , QINGYOU LI ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (2), pp.97-109Estonian Academy Publishers
摘要:Organic nitrogen plays an adverse role in the utilization of oil shale, deactivating catalysts in the shale oil refining process and forming NOX in the combustion of oil shale and shale oil. To have a deep under­standing of its thermochemical transformation during the decomp...
作者:QING WANG , QI LIU , ZHICHAO WANG ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (2), pp.129-145Estonian Academy Publishers
摘要:X-ray photoelectron spectroscopy (XPS) was used to investigate changes in nitrogen functionalities present in Chinese Huadian (HD), Maoming (MM) and Yaojie (YJ) oil shales during pyrolysis. Throughout the process (T ≤ 600 °C), most of the nitrogen contained in raw oil shale ...
作者:VÄINO PUURA , ALVAR SOESOO , MARGUS VOOLMA ...
来源:[J].Oil Shale(IF 0.636), 2017, Vol.34 (2), pp.110-128Estonian Academy Publishers
摘要:In the authors’ recent papers on oil shale chemical composition and geochemical variability, as well natural gamma radiation, the sig­nificantly variable layered lithological structure of the up to 90 m thick oil shale (OS) unit of the Muwaqqar Chalk-Marl Formation (MCM), Ce...
作者:Agila Nurgaliyeva , Zhanna Tastaeva , Alfiya Baibulsinova ...
来源:[J].Trames. Journal of the Humanities and Social Sciences, 2017, Vol.21 (2), pp.151-160Estonian Academy Publishers
摘要:In this paper, we consider various viewpoints on the extent to which the Islamic religion and pre-Islamic beliefs influenced Kazakh society. It describes the traditional religious practices of the Kazakh-nomads, including non-Moslem elements, such as the Fire Cult. Moreover,...
作者:Peter Mbah , Chikodiri Nwangwu , Herbert C. Edeh
来源:[J].Trames. Journal of the Humanities and Social Sciences, 2017, Vol.21 (2), pp.173-190Estonian Academy Publishers
摘要:This study examines the role of elite politics in the emergence of Boko Haram insurgency in Nigeria. It argues that the struggle between political elites of northern and southern extractions over the control of state power has intensified national conflicts and insurgency in the ...
作者:Kristi Anniste , Lee Pukkonen , Tiiu Paas
来源:[J].Trames. Journal of the Humanities and Social Sciences, 2017, Vol.21 (2), pp.97-114Estonian Academy Publishers
摘要:For a comprehensive understanding of the changing and complex migration patterns in Europe, both quantitative and qualitative analyseis are needed. In this paper we complement the studies on migration patterns of East-West migration by qualitatively analysing Estonian migration t...

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