The study of the mechanisms which govern bird orientation and navigation is severely hindered by the difficulty of reconstructing the route taken by the bird. Several methods have been used to study bird flights: direct observation using binoculars; following the bird by aeroplane or helicopter (Griffin, 1943; Hitchcock, 1952; Fiaschi, Baldaccini, Ioale & Papi, 1981); using a transmitter carrie...

In this paper we report on the design, modeling, experimental testing and scaling analysis of a novel MAgnetic Variable stiffnEess spRIng-Clutch (MAVERIC) device, which may be used as the elastic element of Variable Stiffness Actuators (VSAs). The device, comprising two co-axial diametrically magnetized hollow cylinders, has two degrees of freedom: a rotation of the two cylinders around the com...

objective(s) the mechanism(s) by which antidepressants regulate the hypothalamic-pituitary-adrenal (hpa) axis remain elusive. the endocannabinoid system (ecbs) which exhibits antidepressant potential, appears to regulate the hpa axis activity. therefore, we aimed to investigate the role of the ecbs in the action of doxepin including its effect on the hpa axis. materials and methods male wistar ...

Fractional-order Fourier transform is a representational method of the fractional domain formed by signal rotated any angle counterclockwise about origin on coordinate axis in time-frequency plane. This paper intends to use process signals collected from acoustic emission device, and then train results through ensemble SVME, KNN Softmax, so as build model that can predict size location leak hol...

Point-of-care (POC) hemoglobin A1c measurement is now used by many physicians to make more timely decisions on therapy changes. A few studies have highlighted the drawbacks of some POC methods, e.g., poor precision and lot-to-lot variability. Evaluating performance in the clinical setting is difficult because there is minimal proficiency testing data on POC methods. In this issue of Journal of ...

A negative pressure chamber rotary precision seed metering device was designed to achieve the buckwheat sowing goal, solving problems of traditional poor sealing and air suction high power consumption. The planting plate fixedly connected with shell forming a chamber, which rotates around an axis. suitable for designed. Single factor test response surface were carried out on device. Results sho...

The MEMS (Micro-Electronical Mechanical System) scanning mirror is an optical MEMS device that can scan laser beams across one or two dimensions. MEMS scanning mirrors can be applied in a variety of applications, such as laser display, bio-medical imaging and Light Detection and Ranging (LiDAR). These commercial applications have recently created a great demand for low-driving-voltage and low-p...

This thesis documents the design of a multi-axis nanopositioner that addresses a need for carbon nanotube (CNT) instrumentation that is capable of multiple modes of mechanical testing. This nanopositioner is a solution to the need to quantify the mechanical properties of CNTs with the appropriate modes of testing, such as simultaneous bending and tensile loading. This information is important a...

In this study, we investigated the influence of different modes magnetic mixing on effective enzyme activity aspartate ammonia-lyase from Pseudomonas fluorescens immobilized onto epoxy-functionalized nanoparticles by covalent binding (AAL-MNP). The specific AAL-MNPs in traditional shake vial method was compared to MNP-based biocatalyst two devices designed for agitation. first device agitated m...