نتایج جستجو برای: spindle vibration
تعداد نتایج: 76194 فیلتر نتایج به سال:
In order to study the influence of spindle speed and amplitude on surface integrity, TC18 titanium alloy samples were milled by process conventional milling longitudinal ultrasonic vibration assisted milling. The experimental data obtained dynamometer, thermometer, scanning electron microscope, X-ray diffractometer, three-dimensional topography instrument for observation analysis. results show ...
Spindle cell hemangioma is a benign vascular tumor presenting as multifocal red or bluish nodules on the distal limbs. We present a 57-year-old woman with five years history of multiple, soft, violaceous nodules on her hands. Pathologic study indicated spindle cell hemangioma.
Ceramics and other hard-and-brittle materials are very effectively processed by longitudinal-torsional coupled rotary ultrasonic machining (LTC-RUM), which cutting force evolution the effects of processing parameters on material removal mechanism need to be optimized. This study introduced LTC-RUM model zirconia ceramics based brittle mechanism. Firstly, kinematic analysis a single abrasive gra...
In the development of a tool wear monitoring system in milling, complex cutting path always brings challenges to system’s reliability production line. The effect on acoustic emission (AE) and vibration signals during micro milling processes was investigated this study by implementing three types paths experiment. To generate data for analysis, an experiment conducted research platform using AE ...
Background: The aim of this study was to assess effects of cysteamine as an anti-oxidant on rate of in vitro maturation of oocyte and determination of its effects on spindle size and shape. Methods: Pre-mature mice were primed with pregnant mare stimulating gonadotrophin (PMSG) and germinal vesicle (GV) stage oocytes were obtained 48 h after. The oocytes were cultured in tissue culture medium (...
The ?-axons supplying muscle spindle (MS) induce a particular pattern of activity in spindle Ia and II afferents on contraction. From a dynamic viewpoint, the Ia shows increasing spike rates, but II-afferents do not show any activity. For evaluation of nerve fiber activity, spike amplitude (SA) is suggested to measure it as well as its benefit of diagnosing clinical symptoms. This paper aims to...
The ultrasonic vibration extrusion process is a widely used surface treatment of stainless steel, e.g., 304 to improve the quality and increase hardness wear resistance. However, for high-hardness traditional process, i.e., single does not fulfil its application requirements. To cope with this problem, paper proposes an improved method based on low-temperature chromizing obtain expected steel. ...
The spindle of a machine tool plays key role in machining because the wear might result inaccurate production and decreased productivity. To understand condition tool, vector-based convolutional fuzzy neural network (vector-CFNN) was developed this study to diagnose faults from signals. vector-CFNN mainly comprises feature extraction part classification part. phase encompasses use layers poolin...
Neurotoxic effects of oxaliplatin chemotherapy, including proprioceptive impairments, are debilitating and dose limiting. Here, we sought to determine whether oxaliplatin interrupts normal proprioceptive feedback by impairing sensory transduction of muscle length and force by neurons that are not damaged by dying-back neuropathy. Oxaliplatin was administered over 4 wk to rats in doses that prod...
Recent advancement in signal processing and information technology has resulted in the use of multiple sensors for the effective monitoring of tool conditions, which is the most crucial feedback information to the process controller. Interestingly, the abundance of data collected from multiple sensors allows us to employ various techniques such as feature extraction, selection, and classificati...
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