The gas-liquid reaction method was used to prepare the nanoparticle iron-nitride magneto-rheological fluid (MRF), the experiment study of magnetic characteristic and rheologic characteristic of the MRF has been done. The magnetic saturation of iron-nitride MRF prepared is higher than the pure iron MRF, and the sedimentation stability of the iron-nitride MRF is very good, the yield stress of iron-nitride magneto-rheological fluid prepared reached 26KPa at 0.8 Tesla additional magnetic density.
In this paper, a novel semiconductor-ionic SrNb oxide (SNO)-Ce0.8Sm0.2O2-δ(SDC) composite has been prepared, characterized and developed as a membrane, which is sandwiched between two layers of Ni-foam coated with Ni0.8Co0.15Al0.05LiO2-δ(NCAL) to construct single layer fuel cell (SLFC, the branch of solid oxide fuel cell). Such a device presented an open circuit voltage (OCV) of 1.03V and maximum power density of 630 mW/cm2 at 550 °C when the mass ratio of SNO to SDC is 1:9. The feasible study of solid oxide in fuel cells will provide experimental and theoretical support for the development of SLFC technology.
In accordance with the characteristics of coal-mine equipment lease management, an information system of equipment lease management is put forward based on the business process management (BPM) and B/S pattern. And on the basis of investigation to a lease management enterprise of a mining aggregation, the paper elaborates the design of the software function module and structure, and the realization of technology.
According to the requirements of National security Supervision department,aimed at the low safety factor and the backward of personnel management, a coal mine underground personnel management system has been developed. The system adopted the Industrial Ethernet and CAN bus for transmission medium, disposed and managed the data from substation in time. This article introduced the framework of Design software and the main functions module of the software and database structure.
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