Motivated by the recent discoveries of hidden charm exotic state with strangeness BESIII and LHCb Collaborations, we study S -wave bottom tetraquark in two kinds quark models. Both meson-meson diquark-antidiquark configurations are taken into account. The numerical results indicate that there is no bound both However, several resonance states have been predicted. Three $$I\left({{J^P}} \right) ...

Conventional switch-mode LED drivers have problems such as poor performance in harmonic distortion, flickering, power factor correction, stresses on the switches, high switching losses, large size, and cost. To resolve these problems, we propose a long-life driver with ability of correction. The proposed system is based integration half-bridge LLC resonant converter two boundary-conducted boost...

This paper presents an analysis on the effect of a parasitic capacitance full-bridge class-D current source rectifier (FB-CDCSR) high step-up push–pull multiresonant converter (HSPPMRC). The proposed can provide voltage for 12 VDC battery using isolated transformer and FB-CDCSR. main switches diode be operated under zero-current switching condition (ZCS). advantages this technique are that it u...

The S vacancy generated in the phosphating process of Zn x Cd 1? S/CoO QDs plays key roles enhancement S/CoP for photocatalytic hydrogen evolution under visible light. Energy band structure and interfacial compatibility heterojunctions are crucial photocatalysts promoting photogenerated charge separation transfer. Here, a combined strategy engineering quantum effect via facile is reported, firs...

Edges are key points of information in visual scenes. One important class of models supposes that edges correspond to the steepest parts of the luminance profile, implying that they can be found as peaks and troughs in the response of a gradient (1st derivative) filter, or as zero-crossings in the 2nd derivative (ZCs). We tested those ideas using a stimulus that has no local peaks of gradient a...

Abstract: Due to the low cost, small size, and ease of control, the switched-capacitor (SC) battery equalizers are promising among active balancing methods. However, it is difficult to achieve the full cell equalization for the SC equalizers due to the inevitable voltage drops across Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET) switches. Moreover, when the voltage gap among cells ...