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Vascularization remains a large obstacle for creating a functional pancreas-tissue equivalent for transplantation. In this study, a pre-vascularized pancreatic decellularized scaffold was prepared through endothelializing with endothelial progenitor cells (EPCs) in a bioreactor, and the ability to regenerate new blood vessels was detected in vivo. Initially, pancreases of Sprague–Dawley (SD) rats...
Although pulsed radiofrequency treatment (PRFT) has been used to treat trigeminal neuralgia (TN) safely, satisfactory improvement is lacking. Recently, much attention has been paid to the PRFT dose and intra‐operative parameters. It has been reported that high‐voltage PRFT could significantly reduce discogenic pain. However, there is no study investigating the effects of high‐voltage PRFT on TN. The...
As the operation risk assessment and management operation of the state grid corporation is normalized, it is urgent to develop a complete set of system about risk classification and control. This paper firstly studies the operational risk evaluation index system for large power grid and establishes the quantitative criteria of the risk probability and consequences according to "Guidelines for...
Through the sensitivity analysis of large-scale grid reliability, we can determine the key equipment influencing the power supply reliability of the system, and thus effectively find out the bottlenecks limiting the system reliability. In this Paper, the circuit outage model is established, and the former complex large-scale grid with various equipments is divided to two levels: circuit and grid which...
Spin transfer torque magnetic random access memory (STT-MRAM )[1–3] is a new type of memory that directly reversing the magnetic moment of nano-magnet by spin-polarized current to realize data storage. In this paper, the information storage mechanism of STT-MRAM and the precession reversal of the magnetic moment in the free layer of magnetic tunnel junction (MTJ) were studied and simulated based on...
With the promotion of unattended substations,the industry pay more attention to the operation of the remote channel. It takes extra manpower and time to repair the remote communication interruption when the place of fault can not be located. And dispatchers can not get the information initiatively and in time. A new spare and monitoring device of the remote channel in substation is proposed in this...
Power system reliability is always one of the most important requirements in system operation and planning. For a long time, deterministic methods are widely used in system analysis, such as N-1 rule in transmission system static analysis, but the probability characteristics of the components failure have been ignored, and the risk of actual system can't been obtained exactly. Recently, large-range...
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