Glucose 6-phosphate dehydrogenase (G6PD) from Streptomyces aureofaciens was purified and denatured in 6 M urea. Denaturation led to complete dissociation of the enzyme into its inactive monomers, 98% loss of the enzyme activity, about 30% decrease in the protein fluorescence and a 10 nm red shift in the emission maximum. Dilution of urea-denatured enzyme resulted in regaining of the enzyme acti...

Exhumed faults in granitoids along the Lanterman Fault-Rennick Graben Fault system (northern Victoria Land, Antarctica) show superposed ductile to brittle deformation and pervasive hydrothermal fluid-rock interaction. These processes triggered multiple slip events producing crosscutting epidote prehnite-rich fault veins, ultracataclasites pseudotachylytes of crushing origin. Combined microstruc...

Abstract Fault reactivation and associated microseismicity pose a potential threat to industrial processes involving fluid injection into the subsurface. In this research, fracture criticality, defined as gradient of critical pressure change trigger seismicity (Δ p c / h ), is proposed novel reservoir depth-independent metric fault slip susceptibility. Based on statistics probabilistic evaluati...

Abstract Jiaocheng fault ground fissure is the longest extending intermittently in Fen Wei depression zone. The occurrence and development of fissures are affected by rainfall, groundwater pumping, activity, strata other factors. research shows that with rainwater flowing down replenishing confined water layer, there will be undercutting, scouring hollowing, which aggravate fissures; In structu...

This work summarizes our recent findings on hydraulic fracturing-induced seismicity nucleated in the Duvernay shale reservoirs within Western Canada Sedimentary Basin. A coupled model of in-situ stress and fracture-fault systems was built to quantify four-dimensional pressure changes spatiotemporal nucleation during fracturing. Five triggering mechanisms were successfully recognized seismicity-f...

Abstract Several orogenic belts exhibit regional-scale anticlines characterized by prominent faults in their crestal/forelimb zone. These are also a common feature the Neogene fold-and-thrust belt of Apennines, where they have been contrastingly interpreted as younger-on-older thrust faults, large-scale strike-slip and pre- or syn-thrusting normal faults. In this study, we analysed NW–SE-trendi...

This study addresses the use of former gas storage facilities as short-term for renewable energy through power-to-gas (PtG) technology in Germany. Three test cases with coupled thermal-hydromechanical (THM) modelling were conducted to evaluate injection and production schedules. The operating rates controlled by upper lower limits wellbore pressure. maximum difference pore pressure effective st...