Introduction: Many procedures are available to manage cartilage defects of the talus, including microfracturing (MFx) and Autologous Matrix Induced Chondrogenesis (AMIC). Whether AMIC or MFx equivalent for borderline sized talar shoulder is unclear. Thus, present study compared efficacy primary isolated versus focal unipolar chondral at midterm follow-up. Methods: Patients undergoing were recru...

The physical and mechanical parameters degradation mechanisms of red sandstone in the Mount Wuyi scenic area were studied under action dry–wet cycles. Dry–wet cycle, acoustic wave velocity, water saturation rate, triaxial compression tests conducted, aided by scanning electron microscopy X-ray diffraction testing techniques. study’s results show that cycle effect on is a major factor its micros...

To promote oil and gas exploration of the Carboniferous formation in Shibei sag, northeastern margin Junggar Basin, recently drilled rocks from Well ZB6 with typical seismics were characterized. Through systematic core observation, identification marks seismites described, a vertical sequence was established, its geological significance analyzed. The results show that have marks, such as soft-s...

The study of reservoir space development characteristics and the geochemical parameters Permian Longtan Formation in southeast Sichuan Basin at Well X1 was analyzed by using core observations, optical thin-section Ar-ion polishing, scanning electron microscopy, nitrogen adsorption tests. Major trace elements samples, V/Cr, U/T, enrichment coefficients EF (Mo) (U), chemical alteration indexes CI...

Shale reservoir heterogeneity is strong, which seriously affects shale gas evaluation and reserves estimation. The Longmaxi Formation of the Luzhou block in southern Sichuan was taken as an example to characterize pore distribution over full scale using micro-computed tomography (CT), focusing on ion beam scanning electron microscopy (FIB-SEM) small-angle neutron scattering (SANS); further, exp...

Lower Permian Fengcheng Formation is considered to be a high-quality alkaline lacustrine shale oil resource in the Junggar Basin, NW China. Based on core and thin section observation, X-ray diffraction, scanning electron microscope, low-pressure N 2 adsorption, high-pressure mercury intrusion porosimetry, different lithofacies, pore structures were examined. According mineral composition, shale...

Abstract Since rock is heterogeneous, hence its behavior always variable. The governing parameters in deformations are time, applied load, composition, water content, temperature and loading conditions including confinement rate. Time-dependent deformation study extremely important for the prevention of hazards such as rockburst, roof fall collapse. In current study, sandstone samples from Kouz...

The origin of hypogene alteration and mineralization features in the Escondida porphyry Cu deposit resulted from intense overprinting related to three main hydrothermal stages. beginning each stage is recorded by deposition bright quartz crystals on vein walls that precipitated high-temperature fluids. In deepest zones deposit, earliest started with exsolution intermediate-density fluids, which...