introduction: the purpose of this study was to compare the accuracy of the torque wrenches used in different dental implant systems. methods: we evaluated 42 torque wrenches used in different dental clinics in mashhad, iran, using a digital torque meter (mark 10). high (25, 30 and 35 n·cm) and low (15 n·cm) levels of torque were examined. ten tests were performed on each wrench, and the mean va...

The range of a power wheelchair depends on many factors including: battery type, battery state, wheelchair/rider weight, terrain, the efficiency of the drive train, and driving behavior. The purpose of this study was to evaluate the feasibility of three methods of estimating power wheelchair range. Another significant purpose was to compare the current draw on pavement to current draw on an Int...

In this study, liquefaction potential of the alluvial soils consisting clay, silt, and sand sized materials in Sahilkent (Bafra, Samsun) area was investigated using CPT data. Within scope 20 boreholes each having a depth 15 meters were drilled throughout Bafra district, one undisturbed soil sample obtained per meter from 5 these located area. Wet sieve, hydrometer, plastic limit, liquid natural...

The objective of this work is to develop statistical models to predict Locked Wheel Skid Trailer (LWST) skid numbers from Dynamic Friction Tester (DFT) and Circular Texture Meter (CTM) measurements conducted on asphalt pavement surfaces. The analyses conducted are descriptive as well as analytical. They include all descriptive measures along with linear and nonlinear regressions. For both analy...

Power input is an important engineering and scale-up/down criterion in stirred bioreactors. However, reliably measuring power input in laboratory-scale systems is still challenging. Even though torque measurements have proven to be suitable in pilot scale systems, sensor accuracy, resolution, and errors from relatively high levels of friction inside bearings can become limiting factors at small...

Biomimetics is a field that has the potential to drive major technical advances. It might substantially support successful mastering of current tribological challenges, i.e., friction, adhesion and wear in machines and devices from the meter to the nanometer scale. Science currently goes through a major change, with biology gaining increasing importance. Indeed, biology is becoming the new Leit...