Publications by authors named "Han Kai"

Background: Post-stroke epilepsy (PSE) is a major complication of stroke. However, data about the predictors of PSE in patients with acute ischemic stroke (AIS) undergoing mechanical thrombectomy are limited.

Objective: To evaluate the relationship between intraoperative angiographic signs and PSE risk in patients with anterior circulation AIS who underwent mechanical thrombectomy.

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  • Lampreys, as ancient jawless vertebrates, are essential for studying vertebrate evolution, but previous research lacked detailed cell studies in their organs.
  • This study created a detailed cell atlas of 604,460 cells from 14 lamprey tissue samples, identifying 70 different cell types and confirming many are similar to those in jawed vertebrates.
  • New findings include evidence of pancreatic function in lampreys and insights into immune cell diversity, along with research on the lipid metabolism role of a protein called Natterin, using a transgenic mouse model to explore its effects on fat tissue.
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The regulation of the valleytronic properties of two-dimensional materials can contribute to the in-depth study of valley physics and improve its potential for applications in valleytronic devices. Herein, we systematically investigate the electronic properties and the modulation of the valleytronic properties in single-layer NbSeCl. Our results reveal that NbSeCl is a semiconductor with a 105.

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The issue of soil salinization is a global concern that significantly impairs crop productivity, quality, and distribution. Tonoplast Dicarboxylate Transporter (TDT) is a pivotal malic acid transporter localized on the vacuolar membrane, involving in maintaining intracellular pH homeostasis in plants. However, the molecular mechanisms and regulatory pathways underlying plant salt tolerance through TDT remain elusive.

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Mn(II)-based halides have recently garnered significant interest as emerging luminescence materials for diverse photonic applications. Generally, Mn(II) hybrids with tetrahedral coordination show green emission, however, ones with octahedral coordination give red emission. Herein, we design the synthesis of tetrahedral Mn(II) pseudohalide hybrids, (RPhP)MnBrNCS (R=phenyl, pentyl or methyl; PhP=triphenylphosphine; x=1-3), achieved by gradually substituting bromides with pseudohalides (NCS).

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The single-pixel imaging (SPI) technique illuminates the object through a series of structured light fields and detects the light intensity with a single-pixel detector (SPD). However, the detection process introduces a considerable amount of unavoidable white noise, which has a detrimental effect on the image quality and limits the applicability of SPI. In this paper, we combine the untrained attention U-Net with the SPI model to reduce noise and achieve high-quality imaging at low sampling rates.

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  • Understanding hot carrier relaxation in metal nanostructures is crucial for their use in energy conversion and photocatalysis.
  • Research shows two distinct relaxation channels for hot carriers in gold plasmonic nanostructures, with faster relaxation from surface plasmon resonance (SPR) compared to interband transitions (IBTs).
  • The findings highlight different scattering mechanisms for hot carriers, with surface-mediated scattering occurring in large structures from SPR and bulk scattering for IBT-induced carriers, enhancing our grasp of hot carrier dynamics.
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Introduction: The composition and subsets of skin cells continuously change in a dynamic manner. However, the specific microcosmic alterations of human photoaged skin, independent of chronologic aging, remain unclear and have been infrequently analyzed. This study aimed to evaluate the biological processes and mechanisms underlying cell-subgroup alterations in skin photoaging.

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The dynamic nature of noncovalent bonds in peptide self-assembly allows for selective accommodation of guest molecules. However, it remains unclear how to harness coassembly to reinforce the host peptides and simultaneously improve the application defects of guest molecules. This study aims to achieve supramolecular synergy between the host and guest, further expanding the functional space of the hybrid nanostructures.

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Since the concept of distributed feedback fiber random laser was put forward, random Raman fiber laser (RRFL) has made great progress in high power operation. For RRFL with a full-open cavity, the simplest cavity structure, further power scaling was restricted by the rapid increase of high-order Stokes wave. In this paper, we demonstrate that the output power of the RRFL can be further improved by optimizing the fiber length.

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  • Particle shape significantly impacts the mechanical properties of coarse materials in dump sites, but there is currently no standardized classification for particle shape in laboratory research.
  • The study, conducted in Jiangxi Province, utilized a combination of field investigations, large-scale shear tests, and numerical analysis to determine the characteristics of particles in the dumping site and analyze the effects of coarse grain content on mechanical properties.
  • Findings indicated that higher coarse grain content increased particle irregularity, improving internal friction but reducing cohesion, while normal stress affected shear strength differently based on particle shape, with block, strip, and flake shapes influencing performance variably under stress.
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Inorganic host matrices provide a tunable luminescence environment for lanthanide ions, allowing for the modulation of upconversion luminescence (UCL) properties. AREF (A = alkali metal, RE = rare earth) have a low phonon energy and a high optical damage threshold, making them widely used as the host matrix for UCL materials. However, the impact mechanism of alkali metal ions and lanthanide lattice ions on transient UCL dynamics in AREF remains unclear.

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Ni@C nanowires were grown with about 5 nm nickel particles uniformly distributed along the one-dimensional framework. By assembling into a membrane, Ni@C exhibited 95.7% solar spectral absorption and a high water interfacial evaporation rate of 2.

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  • Reactive capture of CO2 can create renewable carbon monoxide (CO), which is essential for making long-chain hydrocarbons and fuels.
  • Traditional methods using hydroxide or amine solutions have low selectivity for CO and face degradation issues.
  • The new method using potassium glycinate (K-GLY) as a capture solution, along with a single-atom catalyst, improves CO production efficiency to 64% and demonstrates the process's viability with both flue gas and direct air inputs.
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The global decline of shark populations, largely driven by overfishing to supply the shark fin trade, poses a significant threat to marine ecosystems. Southeast Asia, and particularly Singapore, is a key hub for the transit and trade of shark fins that contribute to the exploitation of these apex predators. Through the use of DNA barcoding techniques, this study aimed to determine what species of shark are involved in the Singapore shark fin trade.

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Luminescent metal halides are attracting growing attention as scintillators for X-ray imaging in safety inspection, medical diagnosis, etc. Here we present brand-new hybrid Eu(II)-bromide scintillators, 1D type [EtN]EuBr·MeOH and 0D type [MeN]EuBr·MeOH, with spin-allowed 5d-4f bandgap transition emission toward simplified carrier transport during scintillation process. The 1D/0D structures with edge/face -sharing [EuBr] octahedra further contribute to lowing bandgaps and enhancing quantum confinement effect, enabling efficient scintillation performance (light yield ~73100 ± 800 Ph MeV, detect limit ~18.

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Disordered polymer chain entanglements within all-polymer blends limit the formation of optimal donor-acceptor phase separation. Therefore, developing effective methods to regulate morphology evolution is crucial for achieving optimal morphological features in all-polymer organic solar cells (APSCs). In this study, two isomers, 4,5-difluorobenzo-c-1,2,5-thiadiazole (SF-1) and 5,6-difluorobenzo-c-1,2,5-thiadiazole (SF-2), were designed as solid additives based on the widely-used electron-deficient benzothiadiazole unit in nonfullerene acceptors.

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Aims: Hypervirulent Klebsiella pneumoniae (hvKp) causes invasive community-acquired infections in healthy individuals, and hypermucoviscosity (HMV) is the main phenotype associated with hvKp. This study investigates the impact of microaerobic environment availability on the mucoviscosity of K. pneumoniae.

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Steering the selectivity of electrocatalysts toward the desired product is crucial in the electrochemical reduction of CO. A promising approach is the electronic modification of the catalyst's active phase. In this work, we report on the electronic modification effects on CuO-ZnO-derived electrocatalysts synthesized via hydrothermal synthesis.

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The aim of the present study was to explore the functional mechanism of NF-Kappa B-interacting Long non-protein coding RNA (NKILA) in breast malignant phyllodes tumors (BMPTs). The expression and functional role of NKILA were investigated by performing qRT‒PCR, Transwell assays, and CCK‒8 assays in primary BMPT cells. A Kaplan‒Meier curve was used to assess overall survival (OS) and local recurrence-free survival (LRFS).

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Despite the potential of oral immunotherapy against food allergy, adverse reactions and loss of desensitization hinder its clinical uptake. Dysbiosis of the gut microbiota is implicated in the increasing prevalence of food allergy, which will need to be regulated to enable for an effective oral immunotherapy against food allergy. Here we report an inulin gel formulated with an allergen that normalizes the dysregulated ileal microbiota and metabolites in allergic mice, establishes allergen-specific oral tolerance and achieves robust oral immunotherapy efficacy with sustained unresponsiveness in food allergy models.

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  • * A new method is introduced that combines organic and inorganic materials to create hydrogels with better performance, achieving high conductivity (2000 S/m), large stretchability (200%), and excellent electrochemical capabilities.
  • * The resulting elastic supercapacitors demonstrate impressive energy storage metrics, and can power luminescent systems without extra energy, paving the way for innovative designs in wearable electronics.
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  • Mobile colistin resistance (mcr) genes are important for antibiotic resistance in human infections, particularly indicating an emergent threat from Shewanella bacteria, which are typically found in the environment.* -
  • The study sequenced the genomes of six Arctic Shewanella strains and analyzed their genetic relationships with 393 previously published strains, finding that a majority of clinical strains belonged to two specific lineages (L1 and L4), which carry mcr-4 genes.* -
  • A newly identified Arctic strain in lineage 3 (L3) shares genetic features with clinical strains that can potentially transfer from environmental settings to clinical cases, highlighting the urgency for monitoring these strains to prevent infections.*
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Hierarchically structural particles (HSPs) are highly regarded as favorable nanomaterials for superhydrophobic coating due to their special multiscale structure and surface physicochemical properties. However, most of the superhydrophobic coatings constructed from HSPs are monofunctional, constraining their broader applications. Moreover, traditional methods for constructing HSPs mostly rely on complicated chemical routes and template removal.

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Background: PD-1 blockade is highly efficacious for mismatch repair-deficient colorectal cancer in both metastatic and neoadjuvant settings. We aimed to explore the activity and safety of neoadjuvant therapy with PD-1 blockade plus an angiogenesis inhibitor and the feasibility of organ preservation in patients with locally advanced mismatch repair-deficient colorectal cancer.

Methods: We initiated a single-arm, open-label, phase 2 trial (NEOCAP) at Sun Yat-sen University Cancer Center and the Provincial Hospital of Traditional Chinese Medicine, Guangzhou, China.

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