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| 1 | Modeling the viscoelasto-plastic behavior of waxy crude显示文摘Waxy crude oil exhibits complex rheological behavior below the pour point temperature, such as viscoelasticity, yield stress, and thixotropy, owing to the formation of a three-dimensional spongelike interlock network structure. This viscoelasto-thixotropic behavior is an important rheological behavior of waxy crude oils, determining the flow recovery and safe restart of crude oil pipelines. Up to now, the thixotropic models for waxy crude have been all viscoplastic models, without considering the viscoelastic part before the yield point. In this work, based on analyzing the variation of the elastic stress and viscous stress in the Mujumbar model, a new viscoelasto-plastic model is proposed, whose shear stress is separated into an elastic component and a viscous component. The elastic stress is the product of the shear modulus and elastic strain; the shear modulus is proportional to the structural parameter. For the elastic strain, we followed the line of Zhu and his coauthors and assumed that it may be expressed by an algebraic equation. The model is validated by stepwise shear rate tests and hysteresis loop tests on Daqing and Zhongyuan waxy crude. The results show that the model's fitting and predictive capability is satisfactory. | Teng Houxing Zhang Jinjun | 2013 | Petroleum Science2013,10,3: | 6 |
| 2 | Accurate evaluation of Green's functions in a layered medium by SDP-FLAM显示文摘Based on local Taylor expansions on the complex plane,a method for fast locating all modes(FLAM) of spectral-domain Green's Functions in a planar layered medium is developed in this paper. SDP-FLAM,a combination of FLAM with the steepest descent path algorithm(SDP) ,is employed to accurately evaluate the spatial-domain Green's functions in a layered medium. According to the theory of complex analysis,the relationship among the poles,branch points and Riemann sheets is also analyzed rigorously. To inverse the Green's functions from spectral to spatial domain,SDP-FLAM method and discrete complex image method(DCIM) are applied to the non-near field region and the near filed region,respectively. The significant advantage of SDP-FLAM lies in its capability of calculating Green's functions in a layered medium of moderate thickness with loss or without loss. Some numerical examples are presented to validate SDP-FLAM method. | SONG Zhe ZHOU HouXing HU Jun HONG Wei | 2009 | Science in China(Series F)2009,52,5: | 3 |
| 3 | Long-term postoperative cognitive dysfunction in the elderly: ISPOCD1 study显示文摘 | JT Moller P Cluitmans LS Rasmussen P Houx H Rasmussen J Canet P Rabbitt J Jolles K Larsen CD Hanning O Langeron T Johnson PM Lauven PA Kristensen A Biedler H van Beem O Fraidakis JH Silverstein JEW Beneken JS Gravenstein | 1998 | The Lancet . 1998 (9106)1998,,9106: | 2 |
| 4 | Glutathione-S-transferase and hydrolytic activity in a tetrachlorvinphos-resistance strain of house fly and their influence on resistance 显示文摘 | Oppenoorth F J van der Pas L J R Houx N W H | 1979 | Pestic Biochem Physiol1979,11,: | 1 |
| 5 | Neurocognitive fitness inthe sub - acute stage after mild TBI: the effect of age 显示文摘 | Stapert S Houx P de Kruijk J | 2006 | BrainInj2006,20,2: | 1 |
| 6 | The assessment of postoperative cognitive function显示文摘 | Rasmussen LS Larsen K Houx P | 2001 | Acta Anaesthesiol Scand2001,45,3: | 1 |
| 7 | Evaluation of thixo-tropic models for waxy crude oils based on shear stress decay atconstant shear rates显示文摘 | Zhang Jinjun Guo Liping Teng Houxing | 2010 | pply Rheology2010,20,53: | 1 |
| 8 | Studyandanalyticappli-cationoftheleadandcadmiumporphyrincomplexes[J]显示文摘 | LiF HouX ZhangXS | | JSichuanUnivNatSciEd(四川大学学报自然科学版)0,,: | 1 |
| 9 | Integral equation-based overlapped domain decomposition method for the analysis of electromagnetic scattering of 3D conducting objects 显示文摘 | L1 Weidong HONG Wei ZHOU Houxing | 2007 | Microwave and Optical Technology Letters2007,49,2: | 1 |
| 10 | The assessment of postoperative cognitive function 显示文摘 | Rasmussen LS Larsen K Houx P | 2001 | Acta Anaesthesiol Scand2001,45,: | 1 |
| 11 | An IEODDM-MLFMA scheme with DILU preconditioner for analysis of electromagnetic scattering from large complex objects 显示文摘 | LI Weidong HONG Wei ZHOU Houxing | 2008 | IEEE Transactions on Antennas and Propagation2008,56,5: | 1 |
| 12 | Glutathione-S-transferase and hydrolytic activity in a tetrachlorvinphos-resistance strain of housefly and their influence on resistance显示文摘 | Oppenoort H F J Van Der Pas LJ R Houx N W H | 1979 | Pestic Biochem Physiol1979,11,: | 1 |
| 13 | A cubebased scheme of IE-ODDM-MLFMA for electromag- netic scattering problems 显示文摘 | LI Weidong HONG Wei ZHOU Houxing | 2009 | IEEE Antennas and Wireless Propagation Letters2009,8,: | 1 |
| 14 | Is nondipping in 24 hours ambulatory blood pressure related to cognitive dysfunction 显示文摘 | van Boxtel MP Gaillard C Houx PJ | 1998 | J Hypertens1998,16,10: | 1 |
| 15 | Changesofproteoglycansinlumbarintervertebraldiscofbipedalratswithaging显示文摘 | DongF,Dak,HouX | 1995 | ChungHuaIHsuehTsaChih1995,75,: | 1 |
| 16 | Cognition after major surgery in the elderly:test performance and complaints显示文摘 | Dijkstra JB Houx PJ Jolles J | 1999 | Br J Anaesth1999,82,6: | 1 |
| 17 | Aerobic capacity and cognitive performance in a cross-sectional aging study显示文摘 | Van Boxtel MP Paas FG Houx PJ | 1997 | Med-Sci-Sports-Exerc1997,29,10: | 1 |
| 18 | Glutathione S-transferase and hydrolytic activity in a tetrachlorvin- phos-resistance strain of housefly and their influence on resistance显示文摘 | Oppenoorth F J van der Pas L J T Houx N W H | 1979 | Pesticide Biochemistry and Physiology1979,11,: | 1 |
| 19 | Is nondipping in 24 hours ambulatory blood pressure related to cognitive dysfunc-tion显示文摘 | van Boxtel MP Gaillard C Houx PJ | | 0,,10: | 1 |
| 20 | Cognition after major surgery in the elderly:test performance and complaints显示文摘 | Houx PJ Jolles J | 1999 | Br J Anaesth1999,82,6: | 1 |