Using an atomic force microscope (AFM) at a controlled contact force, we report the electrical signal response of multi-walled carbon nanotubes (MWCNTs) disposed on a golden thin film. In this investigation, we highlight first the theoretical calculation of the contact resistance between two types of conductive tips (metal-coated and doped diamond-coated), individual MWCNTs and golden substrate...

In a freehand 3-D ultrasound system, a probe calibration is required to find the rigid body transformation from the corner of the B-scan to the electrical center of the position sensor. The most intuitive way to perform such a calibration is by locating fiducial points in the scan plane directly with a stylus. The main problem of this approach is the difficulty in aligning the tip of the stylus...

A methodology for interpreting instrumented sharp indentation with dual sharp indenters with different tip apex angles is presented by recourse to computational modeling within the context of finite element analysis. The forward problem predicts an indentation response from a given set of elasto-plastic properties, whereas the reverse analysis seeks to extract elasto-plastic properties from dep...

for a determination of soil characteristics one should have access to instruments that can measure these characteristics, including: soil penetration resistance with high accuracy. one of the accurate instruments commonly employed in soil penetration determinations is cone penetrometer. this apparatus, by measuring soil cone index at different soil depths can provide useful about information ab...

IMPORTANCE Imparting surgical change to the nasal tip remains one of the most challenging aspects of rhinoplasty. The surgeon must assess the tip preoperatively and execute the necessary maneuvers to impart the desired change. OBJECTIVE To assess nasal tip resistance to compression in a cadaveric model before and after specific rhinoplasty maneuvers using a novel method. DESIGN, SETTING, AN...

Displacement finite element analysis is performed for a cone-penetration test in cohesionless soils. By modelling finite strain in the soil and large scale sliding at the penetrometer–soil interface, a more realistic penetration process is simulated in which the penetrometer is assumed to be rigid and the soil is assumed to be an elastic-perfect-plastic continuum obeying the Mohr–Coulomb criter...

In geotechnical engineering, in-situ tests, like standard penetration test (SPT) and cone (CPT), are essential to evaluate the underground conditions. SPT is a frequently used approach, while CPT considered one of best exploration apparatuses. However, there demand for correlation SPT-CPT that can be in design. This research aimed find relationships between test’s blow count (N) tip resistance ...

Introduction/Objective. Orthodontic extrusion is the procedure for moving teeth in a vertical, coronal direction. This movement induces changes periodontal ligament and production of new alveolar bone. The objective study was to determine on buccal, palatal interdental bone as result orthodontic extrusion. Methods. Experimental group included six patients who received treatment with fixed appli...

Abstract Each pile in an offshore wind farm may be designed solely on the results of a single cone penetration test (CPT) positioned at its center or based sample statistics calculated from multiple investigated locations same geotechnical unit. This study investigates quantitatively effects spatial variability soil efficacy two approaches to achieve reliable design. Random field theory is used...

Axon growth is driven by the movement of a growth cone, a specialized sensory motile structure located at the tip of a growing neurite. Although stalled retraction bulbs have long been recognized as hallmarks of regeneration failure, mechanisms that control the formation and migration of nerve endings are only beginning to be unraveled. Recent studies point to microtubules as key determinants f...