Purpose.The scientific work is aimed to: 1) analyze the technical condition of freight cars and technological methods used in the repair; 2) identify possible ways to improve resource of freight car bogies; 3) develop a mathematical model to describe the wear geometry of the original surface of bogie center pad at the corresponding life cycle of a
Abstract Properties of shale in an acid environment are important when acid or CO2 is injected into geologic formations as a working fluid for enhanced oil and gas recovery, hydraulic fracturing and reduced fracture initiation pressure.It has previously been shown that acid fluids can enhance the formation conductivity and decrease the hardness of
Interfaith communication and the conversation of followers of religions with each other is one of the most important necessities in the present age.Utilizing the knowledge of jurisprudence as a science expressing the practical duty of those in charge has a great role in explaining the ways of this communication and dialogue.Among the jurisprudentia
We conducted a floristic survey of ferns within the Murici Ecological Station (remnant of the northeastern Atlantic Forest), located near the municipalities of Messias and Murici, in the state of Alagoas, Brazil.To increase knowledge of the ferns of Alagoas, we evaluated the species occurring in the study michael harris sunglasses area in terms of
Background: Radiation therapy is indicated for spinal metastasis of renal cell carcinoma.However, High-dose radiation therapy can increase the complication rates after spinal metastasectomy.The complications after spinal metastasectomy with high-dose radiation therapy are difficult to manage.Case description: A 60-year-old man was diagnosed with re