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Pathogen infection has been progressively recognized as a potential driver of animal migration, and the infection pattern in a certain host may be related to its migration status. Nestling viability can be a crucial life stage in the evolution of the migration cycle but have been irregularly studied to date. In this study, we tested the ‘migratory exposure' hypothesis by comparing the prevalence and...
A self-healing hydrogel containing acylhydrazone bond and disulfide bond with pH and redox dual responses was prepared by crosslinking dialdehyde carboxymethyl cellulose (DCMC) with 3,3′-dithiobis(propionohydrazide) (DTP). The pH, gelator concentration and oxidation degree of DCMC affected the formation of DCMC-based self-healing hydrogels seriously. Interestingly, addition of cellulose nanofibers...
Nanocellulose has attracted considerable attention in virtue of the unique mechanical and optical properties. There were less cost-efficient methods for its mass production. In this paper, a facile high yield procedure for cellulose nanofibrils consisting of sulfuric acid treatment followed by alkali neutralization and homogenization was developed. The product was termed “acid-assisted cellulose nanofibrils”...
A method for synthesizing a two-section inductively-coupled lumped-element quadrature hybrid for broad-band applications is first proposed. Based on this analysis, a two-section inductively-coupled lumped-element quadrature hybrid operated at X-band is presented. The measured magnitude imbalance and phase difference are 2.4dB and 90°± 4° over the frequency band of 8–12GHz, respectively. Results show...
A fully integrated Ka-band Monolithic microwave integrated circuit (MMIC) Doherty Power Amplifier (PA) is designed and demonstrated in this paper. The proposed Doherty PA maily consists of a Lange coupler, carrier amplifier branch, peaking amplifier branch and impedance transformer network. offset lines are introduced in each branch to overcome the inherent defects of conventional Doherty PA. Electromagnetic...
A two-chip S-band receiver has been designed and demonstrated in this paper. The proposed receiver is composed by a two stage low-noise amplifier (LNA) and a resistive type mixer. To achieve wide operation bandwidth as well as low noise figure, the LNA uses wideband matching network and negative feedback technique. Measured results show the LNA obtains a minimum noise figure of 2.4 dB with 17 dB gain...
The purpose of this work is to develop a simple method to incorporate quantum effect in traditional finite-difference time-domain (FDTD) simulators. Which could make it possible to co-simulate system includes quantum structures and traditional components. In this paper, tunneling transmission coefficient is calculated by solving time-domain Schrodinger equation with a developed FDTD technique, called...
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