A combined 3D-atomic/nanoscale comprehension and computation of iron carbide structures tailored in Q&P steels Si alloying.

The essences of the quenching and partitioning (Q&P) process are to stabilize the finely divided retained austenite (RA) carbon (C) partitioning from supersaturated martensite during partitioning. Competitive reactions, , transition carbide precipitation, C segregation, and decomposition of austenite, might take place concurrently during partitioning. In order to maintain the high volume fraction of RA, it is crucial to suppress the carbide precipitation sufficiently.

Does intravenous tranexamic acid reduce bleeding during mastoidectomy?

Mastoidectomy is one of the important head and neck surgeries which is mostly performed due to complications of otitis media. This procedure is performed under microscopic surgery and as a result, a clean visual field is required for surgeons. Bleeding is one of the important issues during microscopic surgeries which reduces visualization.

Frequencies of accessory renal arteries in 129 Iranian patients.

Introduction: Anatomical variation of accessory renal artery has a great clinical importance especially in surgical operations. This issue might bring different complications during surgeries. The prevalence of these variations have been reported differently among populations.