In this paper, an electronically pattern reconfigurable antenna for Internet of Things (IoT) applications is presented.The antenna consists of 4 wire-patches sharing the same ground plane.This radiating element can switch between four end-fire radiation states in less than 5 us and achieves a 290 MHz frequency bandwidth from 2.25 to 2.54 GHz.The re
Objective To investigate the effect of automatic nucleic acid purifiers QIAsymphony SP and QIAcube in the DNA extraction of samples of trace amount or mixed with inhibitors.Methods Different kinds of purification methods using QIAsymphony SP and QIAcube were applied to extract swabs which contained 30, 100, 150 and 300 cells and other samples which
The dispersion of nanomaterials in lubricating oil plays an important role in the lubrication and wear-resistance properties.In this work, supramolecular layered double hydroxides (LDHs) were prepared and added to lubricating oil with different dispersants.The content of key elements in the samples was measured by an oil element analyzer, and the d
Abstract Background The obligate aerobe Azotobacter vinelandii is a model organism for the study of biological nitrogen fixation (BNF).This bacterium regulates the process of BNF through the two component NifL and NifA system, where NifA acts as an activator, while NifL acts as an anti-activator based on various WHITE TEA metabolic signals within t