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In the past decades, it has been debated whether ecological niche should be conserved among closely related species (phylogenetic niche conservatism, PNC) or largely divergent (traditional ecological niche theory and ecological speciation) and whether niche specialist and generalist might remain in equilibrium or niche generalist could not appear. In this(More)
The aim of the study was to investigate correlations between intrahepatic hepatitis B virus total DNA, covalently closed circular DNA (cccDNA), and serum HBsAg in treatment-naïve chronic hepatitis B and HBV related hepatocellular carcinoma (HCC). Liver tissues were taken from 42 HBV related HCC and 36 patients with chronic hepatitis B. A fraction of DNA(More)
PURPOSE The purpose of this study is to explore the effects of patient education and progressive muscle relaxation (PMR) alone or combined on adherence to continuous positive airway pressure (CPAP) treatment in obstructive sleep apnea (OSA) patients. METHODS One hundred and fifty-two Han Chinese OSA patients were randomly assigned to a control group (C),(More)
In this experiment, fenvalerate antibodies were immobilised on the electrode by the crosslinking with glutaraldehyde modified on the glassy carbon electrode (GCE) via chitosan. Fenvalerate was measured by the increase of electron transfer resistance when the immune reaction occurred with Fe(CN)6(3-)/Fe(CN)6(4-) as the probe. Under optimal conditions, the(More)
We theoretically report the existence of optical Bloch oscillations (BO) of an Airy beam in a one-dimensional optically induced photonic lattice with a linear transverse index gradient. The Airy beam experiencing optical BO shows a more robust non-diffracting feature than its counterparts in free space or in a uniform photonic lattice. Interestingly, a(More)
Electrochemical impedance immunosensor, with its high sensitivity from electrochemical impedance analysis and ideal specificity from the immunoassay, is increasingly used in the detection of a kind of phenoxy acid herbicides which is 2,4-Dichlorophenoxybutyric acid (2,4-DB). In this experiment, synthetic 2,4-DB antibodies were immobilized on the electrode(More)
We propose a new design of bulk glass optical current sensor immune to reflection phase shift, in which an annular graded-index magneto-optical glass with a small prism is used as a sensing head, and the inner and outer layers of the glass possess gradient refractive indices, while the center layer is uniform. Our theoretical analyses show that under(More)
The ultralong time (a few hours) response properties of magnetic fluid using etched optical fiber are visualized and investigated experimentally. The operating structure is made by injecting magnetic fluid into a capillary tube that contains etched single-mode fiber. An interesting extreme asymmetry is observed, in which the transmitted light intensity(More)
A non-enzymatic glucose sensor, based on the silver nanoparticles (Ag-NPs)/poly (o-phenylenediamine) (PoPD) composites, is developed by the electrochemical polymerization of o-phenylenediamine and electrodeposition of silver nanoparticles on an indium tin oxide electrode. The Ag-NPs/PoPD composites are characterized by atomic force microscopy, scanning(More)
We report on the existence of optical Bloch oscillations (OBOs) and Zener tunneling (ZT) of Airy beams in ionic-type photonic lattices with a refractive index ramp. Different from their counterparts in uniform lattices, Airy beams undergoing OBOs show an alternatively switched concave and convex trajectory as well as a periodical revival of input beam(More)