The creation of new fractures during an earthquake produces rock damage and contributes to the dissipation strain energy. During dynamic rupture propagation, tensile microfractures can form in process zone domains around a fault that host large transient stress. These produce fragments with wide range sizes. Using molecular dynamics simulations, we model propagation ?-quartz under conditions st...

The sealing ability of caprock is affected by many factors, such as cap thickness, displacement pressure, fracture development, and lithology caprock. Shale one the ideal materials for oil gas formation due to its low porosity permeability. Microfractures can destroy property shale When buried deep enough, will change from toughness brittleness. In general, greater brittleness shale, more devel...

Based on the analysis of a large number core samples, logging results, interpretation data and dynamic in study area, characteristics Chang 6 reservoir Zhouguan area Baihe are studied, favorable areas predicted. The results show that lithology is mainly light gray fine-grained to very feldspar lithic sandstone. pore types residual intergranular pores dissolved pores, including debris microfract...

Introduction: The potential of autologous matrix-induced chondrogenesis (AMIC) to restore unipolar focal chondral defects the knee is promising. However, outcome compared microfracturing (MFx) for certain defect sizes (2–3 cm2) still uncertain. Therefore, present study primary isolated AMIC versus MFx in a cohort patients with borderline sized at midterm follow-up. Methods: Patients who underwe...

Ignimbrites within calderas host intrusions with hazardous and/or economically significant hydrothermal systems. The Hvítserkur ignimbrite at Breiðuvík caldera, north-eastern Iceland, is intruded by basaltic dykes. Our data show that the immediately adjacent to dyke hard, dark-coloured, recrystallised quartz, plagioclase, and alkali feldspar a low permeability porosity frequent macrofractures. ...

Dairy byproducts represent a rich source of phospholipids with the potential for isolation and further commercialization. In this study, we extracted from two dairy (buttermilk beta-serum) using tertiary amine (N,N-dimethylcyclohexylamine, CyNMe2) as switchable hydrophilicity solvent. For comparison, were via Folch (chloroform: methanol). CyNMe2 extraction resulted in recovery values 98.66 ± 0....

Low-permeability reservoirs, especially ultralow-permeability usually show a problem of ineffective water injection which leads to low pressure with high injection-production ratio. It is urgent determine the direction and proportion injection, so as guide adjustment development. Based on theory percolation mechanics combined modern well test analysis method, determination method effective rati...