Electrospun nanofibers have been widely used in various biomedical applications. However, electrospinning methods generally focus on monolithic and coaxial fibers while ignoring Janus fibers. In this study, Janus-structured for wound healing were fabricated via uniaxial based the phase separation of polyvinylpyrrolidone polycaprolactone solution. To enhance bioactivity antibacterial activity dressings nanofibers, Rana chensinensis skin peptides (RCSPs) silver nanoparticles (Ag-NPs)...

In this brief, a balanced dual-band bandpass filter (BPF) using quad-mode ring loaded resonator (RLR) is presented. The resonance characteristics of the proposed RLR are analyzed and design graphs electrical lengths four resonant modes given. Based on above analysis, applied to achieve two differential-mode (DM) passbands. U-shaped microstrip lines stepped impedance microstrip/slotline (MS) transition structures employed good common-mode (CM) rejection without affecting DM ones. addition, an...

Abstract In this paper, two novel balanced bandpass filters (BPFs) with wideband common-mode (CM) suppression and high selectivity are proposed based on the out-of-phase double-sided parallel strip-line (DSPSL) structure. The DSPSL structure is composed of a pair transmission lines as ports λ/2 resonator placed in center. Based characteristics, CM without affecting differential-mode (DM) performance achieved BPFs. By using shorted-coupled BPF I introducing ring Ⅱ, zeros attained, achieving...

Delayed wound healing in skin is strongly correlated with excessive reactive oxygen species (ROS) generation. Corn peptides (CPs) have robust antioxidant and anti-inflammatory effects. Therefore, the study sought to evaluate effect of topical application CPs embedded dressings fabricated using coaxial electrospinning technique. A special structure, which was a co-axial structure Janus-structured sheath, displayed on fiber. The fibers exhibited stable thermal properties, suitable tensile high...

A novel ultra-wideband (UWB) bandpass filter is presented using back-to-back microstrip-slotline transition and triple-mode slotline resonator. uniform resonator constructed with a length of one full wavelength at the central frequency. Two microstrip feed lines are then placed above to make up transition, where two intersection points equally located quarter-wavelength away from short-ends. By properly stretching line lengths, an ultra-wide passband constituted lower/upper cut-off edges...

Core–shell nanofiber membranes by coaxial electrospinning process that became gel after absorbing blood were used for wound repair.

In this letter, a leaky-wave antenna (LWA) based on double-layer (DL) slow-wave structure, possessing high-scanning rate and wide-scanning angle features is investigated. The DL unit structure consists of top-layer with cross-shaped bottom-layer slot-shaped unit. units realize the property controlling cutoff frequency slope dispersion curves independently by changing top bottom layers. radiation LWA achieved triangularly modulating layer. Due to existence layer, strong introduced increase...

This letter presents the proposal and synthesis design of a novel compact microstrip quadruplet bandpass filter (BPF) based on alternative J/K inverters λ/4 resonators. The proposed prototype is firstly derived from conventional one with lumped LC resonators J-inverters. mainline coupling implemented by cascading four via J K inverters, resulting in achievement generalized Chebyshev in-band response. Meanwhile, first fourth are cross-coupled magnetic so as to simultaneously produce...

A novel compact structure with three controllable finite attenuation poles at stopband is presented. The new composed of a pair symmetrical parallel coupled-lines and capacitive load. With this configuration, are available, which can improve the characteristics low-pass filters (LPFs) or upper performances band-pass filters. research method based on transmission-line model for tuning poles. In order to examine feasibility proposed structure, type LPF broad sharp cutoff frequency response...

Abstract Multi‐authority attribute‐based encryption (ABE) is a generation of ABE where the descriptive attributes are managed by different authorities. In current multi‐authority schemes, scale attribute universe employed in restricted various predefined thresholds. this paper, we propose an unbounded ciphertext‐policy system without such restriction. Our scheme consists multiple authorities (AAs), one central authority (CA), and users labeled set attributes. Each AA governs operates...

A balanced filtering directional coupler (BFDC) based on slotline is designed in this article. The proposed composed of microstrip/slot (MS) transition feed structures, three-line cross-finger-coupled resonant and asymmetric parallel loaded branch. MS structure adopted at the input output ports to make differential mode (DM) response independent common (CM) one achieve a good CM suppression. Two transmission zeros (TZs) are generated controlled by coupling structure; thereby, out-of-band...

This paper presents a novel elliptic shape defected ground structure (DGS) for low pass filter (LPF) applications. An equivalent RLC circuit model is presented and its corresponding parameters are also extracted from the measured S-parameters. The advantages of compact size, high selectivity; insertion loss out-band suppression 5.15 GHz to 10 below −31 dB. Good agreement with response circuit, electromagnetic simulation, measurement demonstrated

A class of ultra-wideband (UWB) bandpass filters (BPFs) with designable transmission poles is presented. Transmission are controlled in number by introducing <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</i> -section non-uniform line the center a transmission-line multiple mode resonator. With help increased poles, constituted filter achieves deeper rejection skirts and wider bandwidths. In design, synthesis approach developed to synthesize...

For a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system operating in high mobility scenarios, channel estimation becomes challenging issue, due to fast variation and severe inter-carrier interference (ICI). In this paper, we propose novel pilot-aided iterative receiver, based on pilot symbols soft-estimate of data symbols. The is estimated by time-domain interpolation least-square (LS) methods. Soft-estimate for are obtained maximum-a-posteriori...

Abstract Delivering service intelligence to billions of connected devices is the next step in edge computing. Wi-Fi, as de facto standard for high-throughput wireless connectivity, highly vulnerable packet-injection-based identity spoofing attacks (PI-ISAs). An attacker can spoof legitimate coordinator and perform denial (DoS) or even man-in-the-middle (MITM) with merely a laptop. Such vulnerability leads serious systematic risks, especially core edge/cloud backbone network.In this paper, we...

The pod-shaped TiO 2 nano burst tubes (TiO NBTs) were prepared by the combination of electrospinning and impregnation calcination with oxalic acid (H C O 4 ), polystyrene (PS) tetrabutyl titanate. silver nanoparticles (AgNPs) loaded onto surface NBTs ultraviolet light reduction method to prepare Ag@TiO NBTs. In this work, we analysed effect amount on cracking degree NBTs; concentration AgNO 3 solution particle size loading AgNPs Scanning electron microscopy transmission investigated...

We present a design of middle-infrared modulation absorbers based on vanadium dioxide (VO

Numerous studies for non-circular signals are being conducted to improve the performance of systems. However, Non-Circular MUSIC (NC-MUSIC) method include mostly uniform linear arrays and not as much effort has been devoted other configurations. This paper extends Non-circular rectangular array. The simulation shows NC-MUSIC a higher resolution structure array significantly influence on method.

Smart antenna has the advantage of suppressing jamming in spatial region and improving signal to Interference plus Noise Ratio (SINR) receive signals, thus it is recognized as promising technologies indispensable anti-jamming methods. This paper presents a practical design smart system for GPS/GLONASS base on adaptive beam-forming. It firstly introduces basic concepts principles antenna, provides structure system, analyses discusses each component, then designs GPS GLONASS, ultimately...