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| 1 | Numerical investigation on the effect of depletion-induced stress reorientation on infill well hydraulic fracture propagation显示文摘Depletion-induced stress change causes the redistribution of stress field in reservoirs,which can lead to the reorientation of principal stresses.Stress reorientation has a direct impact on fracture propagation of infill wells.To understand the effect of stress reorientation on the propagation of infill well’s fractures,an integrated simulation workflow that combines the reservoir flow calculation and the infill well hydraulic fracturing modeling is adopted.The reservoir simulation is computed to examine the relationship between the extent of stress reversal region and reservoir properties.Then,the hydraulic fracturing model considering the altered stress field for production is built to characterize the stress evolution of secondary fracturing.Numerical simulations show that stress reorientation may occur due to the decreasing of the horizontal stresses in an elliptical region around the parent well.Also,the initial stress difference is the driving factor for stress reorientation.However,the bottom hole pressure,permeability and other properties connected with fluid flow control timing of the stress reorientation.The decrease of the horizontal stresses around the parent well lead to asymmetrical propagation of a hydraulic fracture of the infill well.The study provides insights on understanding the influence of stress reorientation to the infill well fracturing treatment and interference between parent and infill wells. | Feng-Shou Zhang Liu-Ke Huang Lin Yang Egor Dontsov Ding-Wei Weng Hong-Bo Liang Zi-Rui Yin Ji-Zhou Tang | 2022 | Petroleum Science2022，19，1： | 4 |
| 2 | Lipofuscins prepared by modification of photoreceptor cells via glycation or lipid peroxidation show the similar phototoxicity显示文摘AIM To investigate the effect of two ways of lipofuscin production(lipid peroxidation and glycation) on lipofuscin fluorescence characteristics and phototoxicity and to compare them with the properties of natural lipofuscin.METHODS Model lipofuscins were prepared on the basis of bovine photoreceptor outer segments(POS) with bisretinoid A2 E addition. One set of samples was prepared from POS modified by lipid peroxidation,while another set from POS modified by glycation with fructose. Fluorescent properties and kinetics of photoinduced superoxide generation of model lipofuscins and human retinal pigment epithelium(RPE) lipofuscin were compared. The fluorescence spectra of samples were measured at 365 nm excitation wavelength and 380-650 emission wavelength. RESULTS The fluorescence spectra of model lipofuscins are almost the same as the spectrum of natural lipofuscin. Visible light irradiation of both model lipofuscins and natural lipofuscin isolated from RPE cells leads to decrease of a fluorescence maximum at 550 nm and to appearance of a distinct,new maximum at 445-460 nm. The rate of photogeneration of reactive oxygen forms by both model lipofuscins was almost the same and approximately two times less than that of RPE lipofuscin granules.CONCLUSION These data suggest that fluorescent characteristics and phototoxicity of lipofuscin granules depend only to an insignificant degree on the oxidative modification of POS proteins and lipids,and generally are defined by the bisretinoid fluorophores contained in them. | Alexander Dontsov Anna Koromyslova Mikhail Ostrovsky Natalia Sakina | 2016 | World Journal of Experimental Medicine2016，6，4： | 3 |
| 3 | The processes of dissolution and hydrate forming behind the shock wave in the gas-liq- uid medium with gas mixture bubbles 显示文摘 | A A Chernov V E Dontsov | 2011 | International Journal of Heat and Mass Transfer2011，54，1920： | 1 |
| 4 | Retinal pigment epithelium granules stimulate the photo-oxidation of unsatureated fatty acids显示文摘 | DONTSOV A E GLICKMAN R D OSTROVSKY M A | 1999 | Free Radic Biol Med1999，26，1112： | 1 |
| 5 | Enhancement of shock waves in a porous medium saturated with a liquid containing soluble-Gas bubbles显示文摘 | DONTSOV V E NAKORYAKOV V E | 2001 | International Journal of Multiphase Flow2001，27，11： | 1 |
| 6 | Enhancement of shock waves in a porous medium saturated with a liquid containing soluble-gas bubbles 显示文摘 | Dontsov V E Nakoryakov V E | 2001 | International Journal of Multiphase Flow2001，27，11： | 1 |
| 7 | Enhancement of shock waves in a porous medium saturated with a liquid containing soluble-gas bubbles显示文摘 | DONTSOV V E NAKORYAKOV V E | 2001 | International Journal of Mnltiphase Flow2001，27，11： | 1 |
| 8 | Lipofuscin is a photoinducible free radical generator显示文摘 | Boulton M Dontsov A Jarvis-Evans J Ostrovsky M Svistunenko D | 1993 | J Photochem Photobiol B1993，19，3： | 1 |
| 9 | Enhancement of shock waves in a porous medium saturated with a liquid containing gas bubbles显示文摘 | DONTSOV V E NAKORYAKOV V E | 2001 | International Journal of Multiphase Flow2001，，27： | 1 |
| 10 | 3D capabilityfor nanopositioning and nanometrology显示文摘 | LANGLOTZ E DONTSOV D SCHOTT W | 2011 | Laser+Photo-nics2011，43，1： | 1 |
| 11 | Enhancement of shock waves in a porous medium saturated with a liquid containing soluble-gas bubbles显示文摘 | DONTSOV V E NAKORYAKOV V E | 2001 | International Journal of Multiphase Flow2001，27，11： | 1 |
| 12 | Enhancement of shock waves in a porous medium saturated with a liquid containing soluble-gas bubbles显示文摘 | DONTSOV V E NAKORYAKOV V E | 2001 | International Journal of Multiphase Flow2001，27，11： | 1 |
| 13 | Immunocorrecting, anti- anemic and adaptogenic action of polysaccharldes from Melilotus officihalis D显示文摘 | Podkolzin AA Dontsov VA Sychev IA | 1996 | Byulleten Eksperimental noi Biologiii Meditsiny1996，121，6： | 1 |
| 14 | Immunocorrect-ing,antianemia,and adaptogenic effects of polysaccharides from Melilotusofficinalis显示文摘 | PODKOLZIN A A DONTSOV V A SYCHEV I A | 1996 | Biull Eksp Bio Med1996，121，6： | 1 |
| 15 | Lipofuscin is a photoin-ducible free radical generator显示文摘 | Boulton M Dontsov A Jarvis-Evans J | 1993 | J Photocherm Photobiol B1993，19，3： | 1 |
| 16 | Enhancement of shock waves in a porous medium saturated with a liquid containing solublegas bubbles 显示文摘 | Dontsov V E Nakoryakov V E | 2001 | International Journal of Multiphase Flow2001，27，11： | 1 |
| 17 | Elastic Properties and Structure of Polybutadiene Vulcanized with Magnesium Methacrylate显示文摘 | Dontsov A Candia F D Amelino L | | 0，，48： | 1 |
| 18 | Salts of Unsaturated Acids as Crosslink Agents for Elastomers显示文摘 | Dontsov A Kanausova A A Dogaskin B A | | 0，，： | 1 |
| 19 | Enhancement of shock waves in a porous medium saturated with a liquid containing soluble-gas bubbles显示文摘 | Dontsov V E Nakoryakov V E | 2001 | International Journal of Multiphase Flow2001，27，11： | 1 |
| 20 | On the KZK-type equation for modulated ultrasound fields显示文摘 | Dontsov E V Guzina B B | 2013 | Wave Motion2013，50，4： | 1 |
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