This study provides a comprehensive review of UAVs, types, swarms, classifications, charging methods and regulations. Moreover, application scenarios, potential challenges and security issues are also examined. Finally, future research directions are identified to further hone the research work. We ...
This device measures speeds between ±1000 rpm and gives two types of squared waves that are 90 electrical degrees out of phase, which are usually called channel A and channel B. The reading of one channel provides information about the speed of rotation, while the acquisition of the second ...
Application of surface science to corrosion. Surf. interface sci. Wiley (2020), pp. 799-825, 10.1002/9783527822508.ch78 Google Scholar [16] M. Che, J.C. Védrine (Eds.), Characterization of solid materials and heterogeneous catalysts, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany (...
Second, the attenuation rate of EM waves in the ELF/VLF bands through soil/rock is very low so that deeply buried structures can be illuminated and detected. The structures may be empty passageways or may contain electrical conductive structures serving the utility and ventilation needs. Equation...
This technique operates in the microwave region of the electromagnetic spectrum (Figure 1), involving the transmission and reception of microwave waves [31]. A radar antenna emits pulses of microwave radiation toward the Earth or space, capturing the echoes reflected by the targets and containing da...
Also, it (iii) makes no distinction between longitudinal and transverse phonon branches, and (iv) utilizes the Planck distribution as implemented in the framework of the Boltzmann transport theory. The above assumptions pose, however, a major limitation to application of the Callaway model. ...
Studiesinvestigating various alternatives to antibiotics use in livestockshow promising results. These alternatives include the application of bacteriophages and phage derived peptidoglycan degrading enzymes, engineered peptides, egg yolk antibodies, probiotics, prebiotics and synbiotics, as well as quorum quench...
of the structure relative to the transducer image plane on the Y-axis and time on the X-axis. This modality is often used in conjunction with B-mode to appreciate the structure of interest visually. Doppler ultrasound can differentiate the movement of reflected ultrasound waves either towards or...
A range of imaging application scenarios was explored and images of high visual quality were obtained in both transmission and reflection mode. Keywords: terahertz; imaging; solid-state electronic components 1. Introduction Terahertz (THz) radiation, in between the millimeter-wave (100 GHz) and far...
Introduction Silicon (Si) photonics have emerged as one of the so-called "more-than-Moore" technologies that are based upon or derived from Si complementary metal-oxide-semiconductor (CMOS) and are focused on application and diversity rather than transistor scaling. Many integrated circuit (IC) ...