Intensive wave reflection occurs when the wavelengths of incident waves and bottom undulations are in a 2:1 ratio. Existing studies have included Bragg resonance phenomenon passing over continuous undulating parallel to oblique shoreline. More generally, mechanism is used as means coastal protection, rather than power generation. To focus energy specific area, here, we propose sinusoidal sandba...

Metasurfaces have attracted extensive attention due to their powerful functions, especially the manipulation of polarization state electromagnetic wave in many different areas, which aroused a lot research interest. In this work, broadband transmission converter based on V-shaped element array terahertz band is designed and analyzed, consists grating-V-shaped metasurface-grating. The top layer ...

Nozzle shape plays a key role in determining the flow pattern in the mold of the continuouscasting process under both steady-state and transient conditions. This work applies computational models and experiments with a one-third scale water model to characterize flow in the nozzle and mold to evaluate well-bottom and mountain-bottom nozzle performance. Velocities predicted with the three-dimens...

FliN is a major constituent of the C ring in the flagellar basal body of many bacteria. It is present in >100 copies per flagellum and together with FliM and FliG forms the switch complex that functions in flagellar assembly, rotation, and clockwise-counterclockwise switching. FliN is essential for flagellar assembly and switching, but its precise functions are unknown. The C-terminal part of t...

The virtual source technique, which is based on the boundary integral method, provides the means to impose boundary conditions on arbitrarily shaped boundaries by replacing them by a collection of sources whose amplitudes are determined from the boundary conditions. In this paper the virtual source technique is used to model propagation of waves in a range-dependent ocean overlying an elastic b...

Functional kinked nanowires (KNWs) represent a new class of nanowire building blocks, in which functional devices, for example, nanoscale field-effect transistors (nanoFETs), are encoded in geometrically controlled nanowire superstructures during synthesis. The bottom-up control of both structure and function of KNWs enables construction of spatially isolated point-like nanoelectronic probes th...

This work aimed to investigate the distribution characteristics of low-frequency magnetic flux leakage (LF-MFL) field defect on oil and gas pipelines in electromagnetic detection technique (LFET). Taking four types crack defects (rectangular, semicircular, trapezoidal, V-shaped grooves) with equal lengths, widths different bottom shapes into consideration, specific mathematical model LF-MFL was...