spindle cell neoplasms are defined as neoplasms that consist of spindle-shaped cells in the histopathology. spindle cell neoplasms can affect the oral cavity. in the oral cavity, the origin of the spindle cell neoplasms may be traced to epithelial, mesenchymal and odontogenic components. this article aims to review the spindle cell neoplasms of the oral cavity with emphasis on histopathology.  ...

Carbon nanomaterials reinforced composite materials have been broadly utilized in manufacturing engineering due to improved thermal resistivity, reduced weight, and other mechanical properties. This article highlights the drilling experimentation of zero-dimensional (0-D) nano onion (CNO) polymer composite. For this, three constraints was considered viz., spindle speed, feed rate, weight % nano...

This paper describes the design and realization of a miniature milling spindle with Active Magnetic Bearings (AMBs). Permanent magnet biased, reluctance type actuators position the rotor in five Degrees of Freedom (DOF), leaving the rotation unconstrained. A rotordynamic model was developed to expedite the controller design, and enabled modeling of the spindle’s performance under the influence ...

In this study, three different vegetable-based cutting fluids developed from raw and refined sunflower oil and two commercial types (vegetable and mineral based cutting oils), were carried out to determine for thrust force and surface roughness during drilling of AISI 304 austenitic stainless steel with HSSE tool. The uses of vegetable cutting oils was investigated in reducing thrust force and ...

Millions of holes are produced in many industries where efficient drilling is considered the key factor their success. High-quality possible with proper selection process parameters, appropriate tools, and machine setup. This paper deals effects parameters such as spindle speed feed rate on chips analysis hole quality like surface roughness, size, circularity, burr formation. Al7075-T6 alloy, c...

As a key parameter, stiffness determines the dynamic characteristics of both bearing and spindle unit. However, interactions between speed, initial preload, cutting force caused by thermal expansion unit components alter during running process. Aiming to carry out real-time online monitoring their effect on machine tool stiffness, fiber Bragg grating (FBG) sensors network was proposed. Further,...

Single chromosomal spindle fibres in Nephrotoma suturalis (crane-fly) spermatocytes in metaphase and anaphase were irradiated with monochromatic ultraviolet light focussed to a 2 micrometer spot. In cells in both metaphase and anaphase either the birefringence of the irradiated spindle fibre was altered in the irradiated region, or there was no change, depending on the dose and wavelength of ul...