Søgeresultater - Yang Chen

A photonic-assisted frequency-doubled microwave signal generation and phase shifting approach with arbitrary signal amplitude is proposed. The key device in the proposed technique is a dual-polarization quadrature phase-shift keying modulator, whose two sub-dual-parallel Mach–Zehnder modu...

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A novel photonic approach to generate high-speed and wideband frequency-hopping microwave signal via switching the bias point of a dual-drive Mach-Zehnder modulator (DD-MZM) is proposed and experimentally demonstrated. The core component of the system is a DD-MZM. By switching the bias point of the...

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Fragrance compounds are indispensable in various industries and daily applications, including food, cosmetics, and pharmaceuticals. Traditional synthesis methods, however, often rely on chemical reagents under harsh conditions, such as high temperatures and pressures, leading to significant environm...

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A novel frequency-tunable binary phase-coded microwave signal generator with a tunable frequency multiplication factor is proposed. The key component of the proposed system is a dual-polarization quadrature phase-shift-keying (DP-QPSK) modulator, which is driven by the microwave reference signal and...

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Background Cyclooxygenase-2 (Cox-2) is critical for tumor invasion, angiogenesis, and poor prognosis in many human cancers. It was reported to be an abnormal expression in many human malignancies, including basal cell carcinoma (BCC). However, the prognostic significance of cox-2 in BCC was still un...

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The coupling effect of dual-parallel rotor connected stator permanent magnet synchronous motor not only affects the magnetic field in the coupling area, but also generates an additional magnetic field in the uncoupled area. The characteristics of the additional magnetic field and its influence on el...

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[Objective] With the continuous development of urban rail transit and the ongoing expansion of metro lines, the service environment for metro vehicle bogies is becoming increasingly complex. This poses new challenges to the operational safety and reliability of bogies. Therefore, it is necessary to...

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Transition metal oxides (TMOs) are considered to be highly promising materials for supercapacitor electrodes due to their low cost, multiple convertible valence states, and excellent electrochemical properties. However, inherent limitations, including restricted specific surface area and low electri...

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With the progression of global urbanization, UGS greenery plays an increasingly important role in encouraging engagement in various health-related activities among sedentary residents, and its quality improvement is widely recognized as a promising strategy for achieving public health benefits. Howe...

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Trim47, a TRIM C-VII subgroup protein characterized by a conserved SPRY domain, has been primarily studied for its ubiquitin-dependent roles in mammals. This study reports a paradigm-shifting finding in teleost immunology: grass carp Trim47 (gcTrim47) employs its SPRY domain to execute a novel, ubiq...

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BackgroundThe frequency of low-level viremia (LLV) may vary across China. This study aims to analyze the epidemiological characteristics and related factors of LLV among HIV/AIDS patients in Guizhou Province from 2016 to 2022, and further analyze the impact of LLV on virological failure (VF).Researc...

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Nonlinear vibration phenomena, such as oil whirl and oil whip, are common indicators of oil film instability in hydrodynamic bearings and are key signs of potential faults in rotating machinery. Excessive vibrations caused by oil film instability can accelerate bearing wear and lead to the failure o...

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This study proposes a Tube-based Robust Model Predictive Control (Tube-RMPC) strategy for autonomous vehicle control to address model parameter uncertainties and variations in road–tire adhesion coefficients in complex road scenarios. More specifically, the proposed approach improves the representat...

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Abstract Most visible light imaging methods using polarization to obtain ultrastructure information are limited to 2D analysis or require demanding phase measurements to be extended to 3D. A novel 3D polarized light imaging technique based on Müller‐matrix formulations is introduced which numericall...

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Abstract Frameshifts can be caused by specific combinations of tRNA and mRNA. The wildtype AGC-decoding E. coli tRNASer3 GCU has been shown to induce −1 ribosomal frameshifting on GCA alanine codons, and proposed to read a two-base codon instead of a canonical triplet. However, it has remained uncle...

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BackgroundKidney stones are a common benign condition of the urinary system, characterized by high incidence and recurrence rates. Our previous studies revealed an increased prevalence of kidney stones among diabetic patients, suggesting potential underlying mechanisms linking these two conditions....

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Objective To explore the regulatory role of farnesol in Candida albicans (C. albicans) biofilm cAMP-PKA signaling pathway and its correlation with drug resistance. Methods Standard, fluconazole-resistant, wild and high RAS1 gene expression strains of C. albicans were cultured to different phases of...

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