the effects of high temperature homogenization and low temperature annealing treatments on the microstructure and magnetic properties of sintered magnets of an nd17fe76.5b5cu1.5 type alloy have been investigated. the microstructure of the as-cast alloy, consisted of three phases including a nd2fe14b1 (2:14:1- type) matrix phase cu-containing nd-rich phase and free α-iron. the as-sintered magnet...

Cogging torque is the major limitation of axial flux permanent magnet motors. The reduction of cogging torque during the design process is highly desirable to enhance the overall performance of axial flux permanent magnet motors. This paper presents a double-layer magnet design technique for cogging torque reduction of axial flux permanent magnet motor. Initially, 250 W, 150 rpm axial flux brus...

Determination of when and where animals feed and how much they consume is fundamental to understand their ecology and role in ecosystems. However, the lack of reliable data on feeding habits of wild animals, and particularly in marine endotherms, attests to the difficulty in doing this. A promising recent development proposes using a Hall sensor-magnet system, the inter-mandibular angle sensor ...

introduction: caustic ingestion is responsible for a spectrum of upper gastrointestinal tract injury from self-limited to perforation. this study conducted to evaluate clinical characteristics as well as surgical outcomes in patients with caustic ingestion.   materials and methods: between nov1993 to march 2011, 14 adults with a clinical evidence of corrosive ingestion were admitted into our in...

introduction: determination of type and location of trapped objects and endoscopic observations among children with foreign-body ingestion. materials and methods: we evaluated 105 endoscopic records of patients presenting with foreign-body ingestion from 2001–2011. results: button batteries were the most common objects removed (41%). the lower segment of the esophagus was the most common trappi...