Effect of N/CO Dilution Ratios on Explosion Characteristics of Hydrogen/Propane Mixtures.

With the advancement of hydrogen energy, hydrogen-blended fuels have gained widespread application in industrial and energy sectors, drawing significant attention to the explosion characteristics and safety risks associated with hydrogen/propane (H/CH) gas mixtures. To effectively mitigate these explosion risks, this study investigates the inerting effects of various nitrogen (N) and carbon dioxide (CO) dilution ratios on H/CH gas mixtures. The CHEMKIN-Pro software was employed to simulate the explosion and inerting properties of these mixtures, analyzing parameters such as adiabatic explosion pressure, flame temperature, concentrations of key radicals, heat release rate, and sensitivity of elementary reactions.

Are surgical outcomes for one level anterior decompression and fusion associated with MRI parameters for degenerative cervical myelopathy?

Background: Our study is to determine the correlation between preoperative MRI parameters of spinal cord compression and the effects of anterior surgery in patients with degenerative cervical myelopathy (DCM).

Methods: 24 normal subjects with no evident abnormalities were selected as group A. 79 patients with DCM underwent single-segment (C4-5/C5-6) ACDF surgery formed the operation group, and separated into group B (without high signal) and group C (with high signal) according to the absence or presence of high signal in the spinal cord on preoperative T2-weighted MRI respectively.