565 results match your criteria: "Aerospace Center Hospital,Beijing 100049[Affiliation]"

Study on Recovery Strategy of Hearing Loss & SGN Regeneration Under Physical Regulation.

Adv Sci (Weinh)

December 2024

Department of Neurology, Aerospace Center Hospital, School of Life, Beijing Institute of Technology, Beijing, 100081, China.

The World Health Organization (WHO) reports that by 2050, nearly 2.5 billion people are expected to have some degree of hearing loss (HL) and at least 700 million will need hearing rehabilitation. Therefore, there is an urgent need to develop treatment strategies for HL.

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Individual cerebral small vessel disease (SVD) markers independently predict poor prognosis following stroke. However, the impact of a single SVD, especially cumulative SVD burden on outcomes in acute ischemic stroke (AIS) after intravenous thrombolysis remains unclear. This work evaluated the occurrence of small vessel disease (SVD) in AIS patients who were treated with intravenous thrombolytic therapy by using multimodal MRI imaging.

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With the rapid growth of China's space industry, long-term manned space missions face challenges from the complex space environment, posing risks to human health. Aerospace medicine, a key field, addresses these risks by researching the impacts of space on biochemical changes, cognitive abilities, and immune systems. This article reviews China's aerospace medicine research, summarizing efforts from various institutions and offering insights for future developments in the field.

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Lead halide perovskites are renowned for their exceptional optoelectronic properties but face concerns over lead toxicity and stability, which drives the exploration of lead-free perovskites, with CsAgBiBr standing out as a benchmark alternative. Understanding the structural dynamics and thermal transport properties of CsAgBiBr is crucial but remains an outstanding challenge due to the complex atomic fluctuations. Here, through diffuse scattering experiments and simulations, we uncover the underlying dynamic local structure in CsAgBiBr, showing a unique two-dimensional spatial correlation.

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The optical attenuation coefficient (AC), a crucial tissue parameter indicating the rate of light attenuation within a medium, enables quantitative analysis of tissue properties and facilitates tissue differentiation. Despite its growing clinical significance, accurate quantification of AC from optical coherence tomography (OCT) signals remains a pressing concern. This study comprehensively investigates the factors influencing the accuracy of quantitative AC extraction among existing OCT-based AC extraction algorithms.

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Microfluidic impedance flow cytometer leveraging virtual constriction microchannel and its application in leukocyte differential.

Microsyst Nanoeng

December 2024

State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China.

Microfluidic impedance flow cytometry has been widely used in leukocyte differential and counting, but it faces a bottleneck due to the trade-off between impedance detection throughput and sensitivity. In this study, a microfluidic impedance flow cytometer based on a virtual constriction microchannel was reported, in which the virtual constriction microchannel was constructed by crossflow of conductive sample and insulated sheath fluids with underneath micro-electrodes for impedance measurements. Compared to conventional mechanical constriction microchannels, this virtual counterpart could effectively avoid direct physical contact between cells and the microchannel walls to maintain high throughputs, and significantly reduce the volume of the impedance detection region for sensitivity improvements.

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Objective: This paper was performed to unravel the predictive value of serum cystatin C (Cys C) and matrix metalloproteinase 9 (MMP-9) levels before vascular stent implantation for in-stent restenosis (ISR) 6-12 months after stent implantation for intracranial and extracranial arterial stenosis.

Methods: One hundred and ninety-eight patients who underwent dilatation stenting for intracranial and extracranial arterial stenosis and completed Digital Subtraction Angiography or head and neck CT- Angiography review were selected for the study and were divided into ISR group (n = 33) and no ISR (NISR) group (n = 165) according to the presence or absence of ISR. Serum levels of Cys C, MMP-9, triglycerides (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), uric acid (UA), creatinine (Cr), homocysteine (Hcy), fibrinogen (FIB), total bilirubin (TBIL), endothelin-1 (ET-1), nitric oxide (NO), angiotensin II (Ang II), interleukin-6 (IL-6), tumor necrosis factor (TNF-α), and C-reactive protein (CRP) levels before vascular stent implantation were examined and compared between groups.

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Ferroptosis is a novel form of regulated cell death that plays a key role in inhibiting tumor malignancy. The ferroptosis signalling cascade provides new opportunities for lung cancer therapy. Non‑coding RNA (ncRNA)‑mediated epigenetic modification can influence the vulnerability of cancer cells to ferroptosis in non‑small‑cell lung cancer (NSCLC).

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Targeting ferroptosis offers therapy choice in sepsis-associated acute lung injury.

Eur J Med Chem

December 2024

Department of Geriatrics, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, 100049, China. Electronic address:

Sepsis-associated acute lung injury (SALI) is a common complication of sepsis, consisting of a dysfunctional host response to infection-mediated heterogenous complexes. SALI is reported in up to 50 % of patients with sepsis and causes poor outcomes. Despite high incidence, there is a lack of understanding in its pathogenesis and optimal treatment.

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Africa is vulnerable to the challenges of global climate change, which poses a significant obstacle to achieving economic development while protecting the environment. Despite numerous Environmental Kuznets Curve (EKC) studies, evidence remains inconclusive, especially in African countries. This study delves into the carbon-economic nexus within the EKC framework across 46 African countries from 1990 to 2020.

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Article Synopsis
  • Salsolinol (SAL) is a neurotoxin linked to the development of Parkinson's disease (PD) by causing damage to dopaminergic neurons, and its mechanisms of toxicity involve inducing ferroptosis.
  • The study utilized RNA sequencing and biochemical analysis to show that SAL decreases the levels of proteins SLC7A11 and GPX4, leading to ferroptosis in neuroblastoma cells, which can be reversed by ferroptosis inhibitors.
  • Acteoside, a neuroprotective compound, counteracts SAL-induced neurotoxicity by enhancing SLC7A11 and GPX4 levels through activation of the Nrf2 pathway, suggesting a potential therapeutic strategy for PD by targeting ferroptosis.
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Article Synopsis
  • Recent studies have focused on the link between genetic variations (polymorphisms) and aspirin resistance (AR) in patients with ischemic diseases, aiming to identify potential biomarkers for genetic testing before prescribing aspirin.
  • The research involved analyzing 75 articles and evaluating 94 candidate gene polymorphisms, with 25 genes undergoing meta-analysis, revealing 23 significant associations with AR, including notable genes like PTGS2 and ITGA2.
  • Subgroup analyses further highlighted specific genetic variations associated with AR across different populations, emphasizing the need for tailored approaches in aspirin therapy based on genetic profiles.
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Article Synopsis
  • Understanding vertical patterns of canopy structure and solar radiation in aquatic vegetation is crucial for creating reflection models and studying wetland ecology.
  • This study focuses on the structural characteristics and solar radiation variations of two types of emergent aquatic vegetation (EAVs) across seasons, revealing differences in physiological and biochemical properties during growth stages.
  • Results indicated that direct solar radiation decreases with depth and is influenced more by canopy structure than by leaf pigments, allowing for precise estimations of varied structural parameters using a negative binomial function for stratified transmittance.
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Single-shot single-beam coherent Raman scattering thermometry based on optically induced air lasing.

Light Sci Appl

November 2024

State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China.

Thermometric techniques with high accuracy, fast response and ease of implementation are desirable for the study of dynamic combustion environments, transient reacting flows, and non-equilibrium plasmas. Herein, single-shot single-beam coherent Raman scattering (SS-CRS) thermometry is developed, for the first time to our knowledge, by using air lasing as a probe. We show that the air-lasing-assisted CRS signal has a high signal-to-noise ratio enabling single-shot measurements at a 1 kHz repetition rate.

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Simultaneous detection of multiple nucleic acid targets from a single sample is a common requirement in molecular diagnosis and basic research. Dividing a bulky polymerase chain reaction (PCR) into many isolated small reaction units through microfluidic technology is commonly used to realize this goal. However, previous microfluidic platforms for multiplex PCR suffer from complex structures and strict operation requirements.

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Objective: To evaluate the efficacy of Erbium-doped: yttrium-aluminum garnet (Er:YAG) laser combined with minocycline hydrochloride (Mino-HCL) in treating combined endodontal-periodontal lesions (CEPLs), and to provide a clinical reference for its use.

Methods: A total of 114 patients with CEPLs, admitted to Aerospace Center Hospital from October 2021 to October 2023, were retrospectively analyzed. Of these, 53 patients were treated with Er:YAG laser (control group) and 61 patients received Er:YAG laser combined with Mino-HCL (research group).

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Background: Pseudomyxoma peritonei (PMP) is a rare malignant peritoneal tumor that readily recurs and metastasizes. Studies have shown that cancer stem cells (CSCs) play an important role in tumor recurrence, metastasis, and prognosis.

Objective: In this study, our aim was to isolate CSCs from various tissues of PMP patients and compare their proliferation, migration, and anti-inflammatory abilities.

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Rapid Preparation of Conductive Graphite-like Films on Polymer Surfaces via Hydrogen Plasma Technology.

ACS Appl Mater Interfaces

November 2024

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.

Many special polymer materials with high strength, low density, and high processability have been developed for the substitution of metal products in recent years; however, their electrical insulation properties sometimes limit their application in medicine, electronics, and aerospace fields. Constructing a conductive layer on polymers may be a promising strategy for conquering these problems, but simply obtaining a high-quality conductive layer remains a challenge. Here, we develop a universal strategy to fabricate a conductive graphite-like film on various polymer surfaces based on a simple one-step gas plasma ion implantation method.

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A Retrospective Analysis of Patients Presenting with Acute Hyperkalemia in an Emergency Care Setting.

Risk Manag Healthc Policy

October 2024

Department of Emergency Medicine, Aerospace Center Hospital, Beijing, 100049, People's Republic of China.

Objective: We aimed to analyze the clinical characteristics and prognostic factors of patients with severe hyperkalemia in the emergency department.

Methods: This retrospective cohort study included adult patients diagnosed with severe hyperkalemia who sought medical care at the emergency department of Aerospace Center Hospital between January 2018 and May 2022. Clinical data, including demographics, comorbidities, laboratory findings, and outcomes, were systematically collected.

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Flexomagnetoelectric Effect in Sr_{2}IrO_{4} Thin Films.

Phys Rev Lett

October 2024

School of Physics and Astronomy, Beijing Normal University, Beijing 100875, China.

Symmetry engineering is explicitly effective to manipulate and even create phases and orderings in strongly correlated materials. Flexural stress is universally practical to break the space-inversion or time-reversal symmetry. Here, by introducing strain gradient in a centrosymmetric antiferromagnet Sr_{2}IrO_{4}, the space-inversion symmetry is broken accompanying a nonequivalent O p-Ir d orbital hybridization along the z axis.

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Microstructure Evolution of the Interface in SiC/TiC-TiSiC Composite under Sequential Xe-He-H Ion Irradiation and Annealing Process.

Nanomaterials (Basel)

October 2024

State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China.

A new type of SiC/TiC-TiSiC composite was prepared by the Spark Plasma Sintering (SPS) method in this work. The phase transformation and interface cracking of this composite under ion irradiation (single Xe, Xe + He, and Xe + He + H ions) and subsequent annealing were analyzed using transmission electron microscopy (TEM), mainly focusing on the interface regions. Xe ion irradiation resulted in the formation of high-density stacking faults in the TiC coatings and the complete amorphization of SiC fibers.

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Article Synopsis
  • The paper details the development and results of a supercritical flow experiment conducted on the TZ-6 cargo spacecraft, including the verification of out-of-cabin deployment experiments.
  • It analyzes technical aspects of the payload, such as design specifications, environmental conditions, and operational procedures in space.
  • The findings, including observations of liquid surface states and temperature oscillations, are supported by ground experiments, offering insights for future space fluid science research and design.
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All-optical nonlinear activation functions (NAFs) are crucial for enabling rapid optical neural networks (ONNs). As linear matrix computation advances in integrated ONNs, on-chip all-optical NAFs face challenges such as limited integration, high latency, substantial power consumption, and a high activation threshold. In this work, we develop an integrated nonlinear optical activator based on the butt-coupling integration of two-dimensional (2D) MoTe and optical waveguides (OWGs).

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A Comparative Analysis of Performance Simulation for PUI Detectors Based on Traditional Probability Model and the Vasyliunas and Siscoe Model.

Sensors (Basel)

September 2024

Key Laboratory of Electronics and Information Technology for Space System, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China.

In recent years, the enthusiasm for deep space missions has remained unabated, resulting in continuous advancements in the research field of space environment and particles. Many instruments carried on these missions have conducted detection of pickup ions (PUIs) in the solar system. For those instruments, simulation is an effective means and a crucial step for their performance optimization and future operation in-orbit.

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