Search Results - Jun He

In this paper, we propose a new kind of circular Airy beam whose spectrum is imposed an initial quadratic phase modulation (QPM). Unlike common abruptly autofocusing beams, we find that such modulated circular Airy beams (MCAB) at image plane, i.e., initial plane, may be morphed into conventional Ai...

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Abstract In this paper, improved singular value inclusion sets for rectangular tensors are given, which are tighter than those in (Zhao and Li in Linear Multilinear Algebra 66(7):1333–1350, 2018). Numerical experiments are reported to show the efficiency of the given inclusion sets.

We report on the fast carrier-induced wavelength switching in V-cavity laser using butt-joint passive tuning section. Using the carrier plasma based tuning effect in combination with temperature induced gain spectrum shift, over 25-nm wavelength tuning with 100 GHz channel spacing is obtained with s...

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IntroductionAreca catechu is a widely cultivated palm species with significant economic and medicinal value. However, A. catechu is a tropical plant that is particularly susceptible to low temperatures.MethodsThis study integrates physiological profiling with transcriptomic sequencing to systematica...

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BackgroundThe utility of abdominal drainage is common in laparoscopic appendectomy (LA) for acute appendicitis with perforation to prevent postoperative complications, such as intraabdominal abscess (IAA) and stump fistula. Nevertheless, the drain tube placement is considered to be associated with p...

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Conclusion: GPR30 mitigates NLRC4- and IFI16-driven neuronal pyroptosis in SAH by modulating TLR4/NF-κB signaling. Pharmacological targeting of GPR30 represents a promising therapeutic strategy to ameliorate SAH-associated brain injury.

A wavelength tunable V-cavity laser (VCL) employing integrated thin-film heaters is reported. The laser is fabricated by a simple process with no grating or band-gap engineering. A single-electrode-controlled wavelength tuning of 32 channels is achieved by experiment, with a tuning efficiency of 0.1...

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We report the design and experimental results of a widely tunable three-section laser by using reflecting Fabry–Perot filters with deeply etched lossy half-wave coupling trenches. Good performance in side-mode suppression ratio and wavelength tuning range has been demonstrated experimenta...

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IntroductionAccurate prediction of landslide dam stability is critical for mitigating downstream hazards, but reliable models are hindered by incomplete inventories due to missing data. This study addresses this gap by integrating advanced imputation techniques with machine learning (ML) to enhance...

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ObjectiveThis review aims to study the characteristics of animal models of diabetic gastroparesis, provide a reference for the standardization of model preparation, and offer a better experimental basis for researching its pathogenesis and diagnosis-treatment strategies.MethodsBy searching databases...

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We report the use of highly ordered, dense, and regular arrays of in-plane silicon nanowires as building blocks to produce highly sensitive and well-reproducible surface-enhanced Raman scattering (SERS). A combination of Au nanospheres (AuNPs) and Au coated silicon nanowires (AuSiNWs) was found to e...

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We report a widely tunable V-cavity laser monolithically integrated with an electro-absorption modulator (EAM). The device shows a 41-nm wavelength tunability covering 51 channels at 100 GHz spacing on the ITU grid, with a side-mode suppression ratio (SMSR) higher than 47 dB. E...

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A greenhouse experiment was carried out to determine plant growth, reactive oxygen species (ROS) metabolism in roots and functions of plasma membrane (PM) and tonoplast in cucumber seedlings (Cucumis sativus L. cv. Xintaimici) treated with 40 μmol L−1 CuSO4·5H2O, which were either ungrafted or graft...

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When a space target malfunctions and is no longer controlled by its attitude control system, it usually tumbles in orbit and exhibits a slow spinning state. Accurately estimating the on-orbit attitude of spinning space targets is of vital importance for ensuring the operation of space assets. Moreov...

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Introduction and aims: Chemotherapy-induced peripheral neuropathy (CIPN) is a common and well-documented adverse effect of chemotherapy, primarily targeting sensory nerves. Sensory nerves play a crucial role in the repair of dentine-pulp complex injuries. Despite this, the influence of CIPN on the r...

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Asynchronous-pouring construction (APC) technology employs a suspended hanging basket directly supported by corrugated steel webs (CSWs) with high shear strength, significantly enhancing construction efficiency. To further elucidate the characteristics of APC and promote its application in prestress...

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Directly modulated tunable lasers are highly desirable for constructing dense-wavelength division multiplexing (DWDM) access networks, owing to their advantages of low cost, compact size and low power consumption. However, the transmission distance for 10 Gbps is usually limited to about 10 km in th...

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Annexin A2 is a Ca2+ regulated protein belonging to the Annexin family and is found in the cytoplasm and cell membrane. It can exist in a monomeric form or in a heterotetrameric form with the S100A10 dimer. The research on Annexin A2 in tumours is currently active, and studies on its role in pathoge...

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Mode extraction is the inverse process of the double‐beam superposition principle in classical optics. While polarization mode extraction has been successfully demonstrated using an m‐order vector vortex beam, amplitude mode extraction remains a significant challenge due to the complex intertwinemen...

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<i>N</i>-heterocyclic carbenes (NHCs) were first isolated as stable species by Arduengo in 1991. Since then, they have expanded the boundaries of carbene chemistry and sparked extensive research. Utilizing NHCs to modify the electronic properties of transition metal complexes represents...

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