Abstract Nuclear power has special safety requirements and must be generated on the premise of nuclear safety. It is necessary to forecast abnormal situation system equipment as soon possible, so we can control accident beforehand prevent risk caused by failure accident. At present, pre-accident method in plant mainly relies subjective experience personnel. In contrast, intelligent forecasting ...

Many different types of surface mining equipment use enclosed cabs to protect equipment operators from health and safety hazards. The overburden removal and mining process can be extremely dusty and can cause excessive dust exposure. To study this issue, a cooperative research effort was established between the National Institute for Occupational Safety and Health, U.S. Silica Co., Clean Air Fi...

The Human Powered Centrifuge (HPC) is a facility that is planned to be installed on board the International Space Station (ISS) to enable crew exercises under the artificial gravity conditions. The HPC equipment includes a “bicycle” for long-term exercises of a crewmember that provides power for rotation of HPC at a speed of 30 rpm. The crewmember exercising vigorously on the centrifuge generat...

Specific parameters of cake filtration, such as the filter and medium resistances, can be determined using pressurized housing cell standardized in guideline VDI 2762 by measuring filtrate mass on a laboratory scale. For reproducible measurements an exact detection filtration start, improved test setup is presented compared with standard according to 2762. On basis without particle system filte...

We have reported that high-hydrostatic-pressure (HHP) technology is safe and useful for producing various kinds of decellularized tissue. However, the preparation of decellularized or inactivated skin using HHP has not been reported. The objective of this study was thus to prepare inactivated skin from human skin using HHP, and to explore the appropriate conditions of pressurization to inactiva...

pressurized injection operation means the pressurized injection of a liquid or solution into pore of a mass of soil or stone and/ or cavity between them and built structures. the injected mortar mustconstitute a soil and/ or jel- like matter inside the cavites, and/ or the operations of the injection must cause sedimentation of the solid matter suspending in these cavites. the primary purpose o...

introduction: nowadays, efficient use of scarce water resources is one of the government’s importantgoals for dealing sustainable development in the agricultural sector. in addition to optimal exploitation and using of surface and groundwater resources, choosing of efficient types of irrigation technologies is a very important factor in sustainable water resource management. this study tries to...

Screening of pulp can be expressed as a process where solid contaminants are removed from slurry without an excessive loss fibres acceptable quality. The impurities originate the feedstock, or they generated during transport, handling, storage, pulping process. most typical include bark, fibre bundles shives, knots, plastic, rubber, and sand. Moreover, there also other objectives for screening,...

Computational fluid dynamics (CFD) is adopted to calculate and analyze the performance separation mechanism of a steam-water equipment for pressurized water reactor (PWR) steam generator. The two-phase flow simulated by Euler two-fluid model, several representative droplet diameters are selected among 50 400 μm. influence diameter on investigated analyzing parameters such as phase volume fracti...