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We first doped europium (Eu) ions into WO3 using a hydrothermal method. The effects of Eu ions on the structure, morphology, and electrochromic and photoluminescence performances of WO3 films have been systematically investigated. It is found that a WO3 film doped with Eu ions exhibits the bi-functionality of electrochromic switching and red emission. Compared with an undoped WO3 film, a WO3 film doped with 10%Eu ions shows a remarkably enhanced optical contrast of 80.7% at 680 nm, a faster coloration response of 7.2 s, and more than 3 times higher coloration efficiency of about 57.85 cm2 C−1. Moreover, a WO3 film doped with Eu ions could be excited by 260 nm ultraviolet light and exhibit a tunable red emission as a response to the applied electric field. This novel and bifunctional WO3 film shows potential in preparation of illuminable “smart windows”. [ABSTRACT FROM AUTHOR]

In this work, we first studied the effects of CdS quantum dot modification on the electrochromic properties of TiO2 films in a Li ion containing organic electrolyte. Driven by an external potential, the CdS modified TiO2 (TiO2/CdS) film achieves reversible coloration and discoloration. In particular, the TiO2/CdS film exhibits multistage color switching from yellow (original state), to green (−1.5 V), to black (−2 V) in the coloration process, then to brown (−0.6 V) in the discoloration process. Besides, an improved optical contrast window of about 79.7% at 624 nm, an enhanced coloration efficiency of 70.8% and a half shortened coloration time of 12.7 s are achieved for the TiO2/CdS film, when compared with those of a pure TiO2 film. This work not only presents a novel electrochromic material with enhanced electrochromic properties, but also brings us a new insight into exploring the electrochromic functions of metal-chalcogenides. [ABSTRACT FROM AUTHOR]

Tungsten trioxide (WO3) is a promising electrochromic material for potential applications in architectural and automotive smart windows. Nanostructured WO3 has attracted particular attention over the past few years due to its potential advantages in electrochromic properties. Herein, Ni-doped WO3 nanostructured films were obtained by a seed-free hydrothermal method directly on transparent conducting substrates. The influences of Ni doping on the nanostructure and electrochromic properties of WO3 films were investigated. Compared to pure WO3 films, Ni doping can increase the crystal defects and induce significant changes in the nanostructure, thus affecting the electrochromic performance of WO3 films. Low concentration Ni-WO3 films exhibited a vertically aligned nanorods morphology, ultrahigh optical modulation (over 85% from 600 to 900 nm), high coloration efficiency (60.5 mc2 C−1 at 600 nm) and excellent cycling stability for about 5500 cycles. Finally, the complementary electrochromic device assembled with 1.5% Ni-WO3 and NiO-based films exhibited vivid color change from transparent to black (x = 0.326, y = 0.369, YL% = 3.29%) with maximum transmittance of about 3.5% in the dark state. [ABSTRACT FROM AUTHOR]

A high-dimensional nonlinear dynamic model of a dual-rotor system with rub-impact was established using the FEM software and free interface modal synthesis method. Numerical Solution was obtained with impulsive receptance method and Duhamel integral method. The nonlinear dynamic response characteristics were studied for the rub-impact counter-rotating dual-rotor system with the nonlinear forces of Squeezed Film Damper and inter-shaft bearing taken into consideration. The results show that the method has high computing efficiency which mainly depends on the degrees of freedom at the location where the nonlinear force acts. The peak of the orbit is obviously cut, or the orbit is disordered for rub-impact. For the system responses, there may be combinations of two frequencies and frequency divisions of the combinations in addition to the rotation frequencies of the internal and external rotors. The rub-impact can change the amplitude of the synchronous frequency unbalance response, and it had greater influence for amplitude of the internal rotor synchronous frequency. [ABSTRACT FROM AUTHOR]

We propose a new model to investigate the dynamics of human opinion as affected by advertising, based on the main idea of the CODA model and taking into account two practical factors: one is that the marginal influence of an additional friend will decrease with an increasing number of friends; the other is the decline of memory over time. Simulations show several significant conclusions for both advertising agencies and the general public. A small difference of advertising’s influence on individuals or advertising coverage will result in significantly different advertising effectiveness within a certain interval of value. Compared to the value of advertising’s influence on individuals, the advertising coverage plays a more important role due to the exponential decay of memory. Meanwhile, some of the obtained results are in accordance with people’s daily cognition about advertising. The real key factor in determining the success of advertising is the intensity of exchanging opinions, and people’s external actions always follow their internal opinions. Negative opinions also play an important role. [ABSTRACT FROM AUTHOR]

Researches on modeling method and dynamic characteristics of complex dual rotor system are carried out with a dual rotor experimental apparatus. The dual rotor system is divided into modal substructure and connecting substructure. Then, with finite element method and fixed interface modal synthesis method, modeling and dimensionality reduction of the modal substructure are conducted, and the connecting substructure is retained in the physical space. The substructures are assembled according to the butt conditions between supports and shaft. And then the dynamic equation of the dual rotor system with local nonlinear is solved using the Newmark algorithm. Validity of this method is verified by experimental results, and the rotor system response law is studied. The researches show that: with rotational speed changing, unbalanced response frequency and variable-stiffness vibration frequency of the rolling bearing and the combination of these frequencies emerge in the rotor response; law of unbalanced synchronous response has close relationship with supports' position, unbalance of the rotor discs and the mode shapes of critical speeds. [ABSTRACT FROM AUTHOR]

Fresh Co(II) concluding coordination polymer based on {[Co(μ-ppda)(μ-pbmeix)]∙0.5pbmeix·H 2 O} n (1) was formed smoothly through the reaction of Co(II) salt with p -phenylenediacetic acid (H 2 ppda) under the conditions of N-donor co-ligand semirigid 1,4-bis(2-methylimidazol-1-ylmethyl)benzene (pbmeix) for cervical cancer therapy. In our biological research, we explored the pathogenesis of cervical cancer and provided new targets for cervical cancer treatment. In patients with cervical cancer and the cervical cancer rat model, the expression of Breast Cancer Susceptibility Protein-1 (BRCA1) was aberrantly upregulated. This phenomenon may play a role in the occurrence and development of cervical cancer. Then, bioinformatics prediction was conducted, and miR-9-5p was speculated as the up-regulator of BRCA1 in cervical cancer cells. The influence of miR-9-5p on the vascular endothelial growth factor and pigment epithelium-derived factor contents of cervical cancer lesions was determined via enzyme‐linked immunosorbent (ELISA) assay. Then, the proliferation of cervical cancer cells was determined via CCK-8 assay after miR-9-5p transfection. Finally, we proved that complex 1 is an excellent candidate for cervical cancer therapy through miR-9-5p-regulated BRCA1-OCT1-GADD45 pathways. [ABSTRACT FROM AUTHOR]