Trochoidal milling is a well-stablished machining strategy which still allows for the introduction of new approaches. This can be applied to any kind material, although it usually associated advanced materials, such as titanium and nickel alloys. study based on adaptation feed speed tool with Ti-6Al-4V, so chip width maintained constant without modifying path geometry. A singularity in experime...

Nifekalant (NF) is a novel class III antiarrhythmic agent that is effective in preventing life-threatening ventricular tachycardia/fibrillation (VT/VF). We investigated mechanisms of destabilization and early termination of spiral-type reentrant VT by NF in a two-dimensional subepicardial myocardial layer of Langendorff-perfused rabbit hearts (n = 21) using a high-resolution optical action pote...

background: prevention of slipping accidents requires provision of adequate friction through the use of suitable combinations of footwear and underfoot surfaces. shoe sole tread groove is one of the important factors on friction coefficient during walking. objective: to measure the effect of different shoe sole tread groove depths and different surfaces on the required quotient of friction (q),...

Aiming at the high specific removal energy and heat generation rate in grinding process, low transfer efficiency arc zone of ordinary wheel, problems local temperature burn are easy to occur. In this paper, plane grooving wheel with large spiral Angle is taken as research object, numerical analysis model gas-liquid two-phase flow field wedge established. The enhancement mechanism performance gr...

no tillage systems can reduce operating costs, enhance soil organic matter, ameliorate soil structure and prevent environmental damage caused by stubble burning. however, the lack of an appropriate direct drill for the hardened soil of arid areas reduces adequate soil-seed contact and, thus, the system has shown contradictory results in past tests. developing a direct drill to place the seed an...