Publications by authors named "WeiFeng Zhang"

Hardware system customized toward the demands of graph neural network learning would promote efficiency and strong temporal processing for graph-structured data. However, most amorphous/polycrystalline oxides-based memristors commonly have unstable conductance regulation due to random growth of conductive filaments. And graph neural networks based on robust and epitaxial film memristors can especially improve energy efficiency due to their high endurance and ultra-low power consumption.

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Intervertebral disc degeneration (IVDD), is one of the leading causes of low back pain. Inflammation is considered to be the main pathophysiological process of IVDD. The nucleotide-binding domain and leucine-rich pyrin domain containing 3 (NLRP3) inflammasome-mediated inflammatory responses are critically involved in the progression of IVDD.

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Owing to their unique and tunable optoelectronic and magnetic properties, organic conjugated radicals have great potential in information storage and communication through modulating the molecular spin states. However, few electronic/spintronic devices based on these materials have been reported to date due to various intrinsic constraints such as poor material stability and processability. In this work, we have synthesized a stable singlet ground state organic conjugated diradical 5,7-dimesityl--indaceno[1,2-:7,6-']dipyridine (mNIF) with narrow band gap (1.

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We propose and experimentally demonstrate a fully tunable microwave photonic narrow bandpass filter based on phase modulation to intensity modulation (PM-IM) conversion. In the filter implementation, an on-chip dual-drive microring resonator (MRR) is a key component. This resonator leverages a multimode waveguide to enable a high Q-factor.

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Co and Ni codoped strontium ferrite particles were prepared by a solid-state strategy and employed as catalysts for the OER. They exhibited a Tafel slope of 55 mV dec and required an overpotential of 334 mV to afford a current density of 10 mA cm, which is lower than that of Co and Ni separately doped samples. The DFT calculations reveal the redistribution of local charge around Fe atoms, decrease of energy barriers, and increase of conductivity by doping.

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Traditional general anesthesia in elderly lung cancer patients undergoing pulmonary lobectomy may lead to hemodynamic fluctuations and postoperative complications. To optimize anesthesia efficacy, this study explores the application of combined anesthesia (general anesthesia combined with thoracic paravertebral block) in such surgeries. We evaluated the improvement of pulmonary oxygenation function, hemodynamic stability, and respiratory compliance in elderly lung cancer patients undergoing pulmonary lobectomy with combined anesthesia.

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Defect engineering in the inherently inert basal planes of transition metal dichalcogenides (TMDs), involving the introduction of chalcogen vacancies, represents a pivotal approach to enhance catalytic activity by exposing high-density catalytic metal single-atom sites. However, achieving a single-atom limit spacing between chalcogen vacancies to form ordered superstructures remains challenging for creating uniformly distributed high-density metal single-atom sites on TMDs comparable to carbon-supported single-atom catalysts (SACs). Here we unveil an efficient TMD-based topological catalyst for hydrogen evolution reaction (HER), featuring high-density single-atom reactive centers on a few-layer (7 × 7)-PtTe superstructure.

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Background: Myocardial ischemia-reperfusion injury (MI/RI) poses a significant challenge during coronary revascularization. This research investigated alterations in oxidative stress and ferroptosis, alongside the impact of nicorandil on these aspects, among patients undergoing acute ST-elevation myocardial infarction (STEMI) and receiving primary percutaneous coronary intervention (pPCI).

Methods: 121 patients with STEMI who were undergoing pPCI were included in the study, and we documented their thrombolysis in myocardial infarction (TIMI) blood flow grades before and after the procedure.

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Background: This study aimed to investigate the effect and clinical implications of IL-1β on the development of aneurysmal subarachnoid hemorrhage.

Methods: This retrospective study included a total of 80 participants, and these participants were divided into the following two groups: control group (healthy participants) and experimental group (aneurysmal subarachnoid hemorrhage patients). Then, all of the participants received digital subtraction angiography or computed tomography angiography.

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Immunohistochemistry (IHC) is a widely used technique in diagnostic pathology and biomedical research, but there is still a need to shorten the operation process and reduce the cost of antibodies. This study aims to assess a novel IHC technique that incorporates mechanical microvibration (MMV) to expedite the process, reduce antibody consumption, and enhance staining quality. MMV was generated using coin vibration motors attached to glass slides mounted with consecutive tissue sections.

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Introduction: Primary percutaneous coronary intervention (PPCI) is an effective method for the clinical treatment of acute ST-segment elevation myocardial infarction (STEMI). For patients who miss the optimal time window, optimal management of these patients remains controversial.

Aim: To compare the effects of different timing of percutaneous coronary intervention on the long-term prognosis of elderly patients with acute ST-segment elevation myocardial infarction (STEMI) with time from symptom onset > 12 hours.

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As oceanographic models advance in complexity, accuracy, and resolution, in situ measurements must provide spatiotemporal information with sufficient resolution to inform and validate those models. In this study, water masses at the New England shelf break were mapped using scientific echosounders combined with water column property measurements from a single conductivity, temperature, and depth (CTD) profile. The acoustically-inferred map of sound speed was compared with a sound speed cross section based on two-dimensional interpolation of multiple CTD profiles.

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Article Synopsis
  • Recent studies show a potential link between metabolites, immune cell types, and the risk of lymphoma, but how these factors interact still needs clarification.
  • The research utilized two-sample Mendelian randomization and large-scale genomic data to analyze the relationship between 1400 metabolites, 731 immune cell types, and different lymphoma subtypes.
  • The findings revealed bidirectional causal relationships between specific metabolites and lymphomas, as well as mediating roles of certain immune cells in these associations.
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The association between the triglyceride-glucose (Tyg) index and coronary plaque in patients with coronary heart disease remains unclear. This study aimed to investigate the relationship between Tyg index and coronary plaque under different levels of blood glucose metabolism. This retrospective study included patients with coronary artery disease who underwent coronary angiography and OCT between January 1, 2023 and January 1, 2024, and ultimately collected 232 coronary plaques.

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Article Synopsis
  • Surface electromyography (sEMG) is a unique physiological signal that reveals human movement intentions but poses challenges for accurately estimating joint angles due to its nonlinear characteristics.
  • This paper introduces a joint angle prediction model that merges temporal convolutional networks (TCN) and long short-term memory (LSTM) networks to enhance wrist motion angle estimation from sEMG signals.
  • The proposed TCN-LSTM model demonstrated superior performance in predicting wrist movements compared to standalone TCN and LSTM models, with significant reductions in prediction error and improvements in accuracy as validated on the Ninapro DB1 dataset.
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Background: This study aimed to investigate the clinical and molecular genetic characteristics of ten children with ornithine carbamoyltransferase deficiency (OTCD) in southeastern China, as well as the correlation between the genotype and phenotype of OTCD.

Methods: A retrospective analysis was performed on the clinical manifestations, laboratory testing, and genetic test findings of ten children with OTCD admitted between August 2015 and October 2021 at Quanzhou Maternity and Children's Hospital of Fujian Province in China.

Results: Five boys presented with early-onset symptoms, including poor appetite, drowsiness, groaning, seizures, and liver failure.

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Background: A novel positron emission tomography (PET) imaging tracer, [F] SynVesT-1, targeting synaptic vesicle glycoprotein 2 (SV2A), has been developed to meet clinical demand. Utilizing the Trasis AllinOne-36 (AIO) module, we've automated synthesis to Good Manufacturing Practice (GMP) standards, ensuring sterile, pyrogen-free production. The fully GMP-compliant robust synthesis of [F] SynVesT-1 boosting reliability and introducing a significant degree of simplicity and its comprehensive validation for routine human use.

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Background: Continuous renal replacement therapy (CRRT) is commonly used for the treatment of acute kidney injury (AKI) in critically ill neonates. This study investigated the effectiveness and feasibility of CRRT for AKI in neonates who weigh ≤3 kg.

Methods: Data from 19 neonates with a weight ≤3 kg and AKI who underwent CRRT at two centres between January 2015 and October 2021 were collected retrospectively.

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Article Synopsis
  • Controlling defects and film structure at buried interfaces can significantly enhance the power conversion efficiency (PCE) of inverted perovskite solar cells (PSCs).
  • Two new donor‒acceptor type semiconductive covalent organic frameworks (COFs) were developed to improve the morphology and charge extraction in the PSCs, enabling a maximum certified PCE of 25.14%.
  • The devices showed impressive stability under high humidity and temperature, indicating promise for commercial applications, particularly in perovskite/silicon tandem solar cells.
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Conventional herbicide formulations suffer from serious problems such as easy drift, run-off and scouring into the environment, which pose enormous threats to human health and environmental safety. Herein, an innovative strategy is proposed to prepare oil-in-water nanoemulsions with long-term stability, enhanced droplet deposition, and improved nanoherbicide adhesion via steerable interfacial assembly of 1D amyloid-like protein nanocomposites. Bovine serum albumin (BSA) undergoes rapid amyloid-like aggregation upon reduction of its disulfide bond.

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Extreme precipitation can significantly influence the water quality of surface waters. However, the total amount of bacteria carried by rainfall runoff is poorly understood. Here, thirty rainfall scenarios were simulated by artificial rainfall simulators, with designed rainfall intensity ranging from 19.

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Electronic tattoo, capable of imperceivably acquiring bio-electrical signals from the body, is broadly applied in healthcare and human-machine interface. Tattoo substrate, the foundation of electronic tattoo, is expected to be mechanically mimetic to skin, adhesive, and breathable, and yet remains highly challenging to achieve. Herein, the study mimics human skin and design a breathable, adhesive, and mechanically skin-like super tattoo substrate based on an ultra-thin film (≈2 µm).

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Functionalized mesoporous materials have become a promising carrier for enzyme immobilization. In this study, Santa Barbara Amorphous 15 (SBA-15) was modified by N-aminoethyl-γ-aminopropyl trimethoxy (R). R-SBA-15 was employed to purify and immobilize recombinant β-glucosidase from Terrabacter ginsenosidimutans (BgpA) in one step for the first time.

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Low-power and fast artificial neural network devices represent the direction in developing analogue neural networks. Here, an ultralow power consumption (0.8 fJ) and rapid (100 ns) LaBiFeO/LaSrMnO ferroelectric tunnel junction artificial synapse has been developed to emulate the biological neural networks.

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Article Synopsis
  • The study addresses non-radiative recombination losses and moisture degradation in inverted perovskite solar cells (PSCs), which hinder their efficiency and stability due to poor perovskite quality.* -
  • To combat these issues, researchers combined thermally stable perovskite layers with covalent organic frameworks (COFs) that improve perovskite quality and reduce defects through a unique interaction with lead ions.* -
  • COF-doped PSCs achieved power conversion efficiencies of up to 25.64% and demonstrated remarkable stability, retaining 81% of their initial efficiency after 978 hours at elevated temperatures and performing well under moisture and light conditions.*
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