Publications by authors named "Yan X"

Article Synopsis
  • - The study discusses the first search for elastic scattering between low-mass dark matter particles (sub-MeV) and electrons, conducted using the PandaX-4T liquid xenon experiment.
  • - These sub-MeV dark matter particles can gain energy through interactions with cosmic-ray electrons, which could be spotted as electron recoil signals in the experiment.
  • - With an exposure of 0.63 tonne·year, the researchers established new limits on the interaction strength between dark matter and electrons across a range of masses from 10 eV/c² to 3 keV/c².
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  • The study investigates the J/ψ and ψ(3686) decays into Σ^{0}Σ[over ¯]^{0} processes using data from the BESIII detector, which has extensive datasets.
  • It presents the first measurements of parity-violating decay parameters for Σ^{0} and Σ[over ¯]^{0}, suggesting implications for strong CP symmetry through their asymmetries.
  • The findings include the observation of opposite transverse polarizations of Σ^{0} hyperons in these decays and the ratio of S-wave to D-wave contributions, contributing valuable insights into charmonium state dynamics.
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A unary system is the most conceptually concise design for conducting self-assembly. However, in most DNA-guided self-assembly schemes, a unary system has rarely been adopted because of the inherent challenge of strictly decoupling the monomer synthesis process from the assembly process, which may directly lead to the inaccurate control over assembly. Herein, we provide a multi-stimulus-triggered assembly strategy based on the DNA origami structure, which allows the unary system to realize controllable crystallization and phase transition by exerting allosteric stimuli.

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Prussian white (PW) is considered a promising cathode material for sodium-ion batteries. However, challenges, such as lattice defects and poor conductivity limit its application. Herein, the composite materials of manganese-iron based Prussian white and reduced graphene oxide (PW/rGO) were synthesized via a one-step in situ synthesis method with sodium citrate, which was employed both as a chelating agent to control the reaction rate during the coprecipitation process of PW synthesis and as a reducing agent for GO.

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Graphdiyne (GDY) is a promising anode for rechargeable batteries with high capacity, outstanding cyclic stability, and low diffusion energy. The unique structure of GDY endows distinctive mechanisms for metal-ion storage, and it is of great significance to further visualize the complex reaction kinetics of the redox process. Here, we systematically tracked the reaction kinetics and provided mechanistic insights into the lithium ions in the GDY to reveal the feature of the cation-π effect.

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  • The study investigates how acupuncture at the "Yizhi Tiaoshen" acupoint affects blood oxygen levels and brain function in rats with Alzheimer's disease (AD).
  • Thirty AD model rats were divided into three groups (model, donepezil, and acupuncture) and tested for changes in learning and memory after treatment, using fNIRs to measure blood oxygen metrics in the brain.
  • Results showed that both acupuncture and donepezil improved cognitive functions and altered blood oxygen metabolism in specific brain areas, indicating a potential therapeutic effect on AD through enhanced neuronal protection.
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Background: Recent studies have shown that the serum glucose-potassium ratio (GPR) upon admission is correlated with the prognosis of cerebrovascular disorders. Herein, we investigated the relationship between GPR and 90-day functional outcomes in patients with acute ischaemic stroke (AIS).

Methods: Clinical data were collected from patients with AIS registered at the Stroke Center of Jiangsu Provincial Hospital of Chinese Medicine.

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Metal halide perovskites are promising candidates for gamma-ray (γ-ray) spectrum detectors. However, achieving high-resolution energy spectra in single-photon pulse-height analysis mode remains challenging, due to the inevitable leakage currents degrade the recognizable fingerprint energies which is critical for resolving γ-ray spectroscopy. We demonstrate under high bias voltage, a deficient contact barrier can lead to excessive surface charge injection, thereby increasing leakage current from electrodes to perovskites.

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  • Stress cardiomyopathy (SCM) is a temporary heart condition that can cause severe issues like heart failure, and it has been rarely seen in patients undergoing spinal surgery.
  • A case report details a scoliosis patient who developed severe SCM during her surgery wake-up period, resulting in circulatory collapse but ultimately leading to a good recovery after treatment.
  • The study emphasizes the importance of early diagnosis and management of SCM, especially for patients with risk factors, to prevent severe complications and improve outcomes.
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  • Severe fever with thrombocytopenia syndrome (SFTS) is a dangerous infectious disease caused by the SFTS virus, prompting the need for early identification of high-risk patients through a dynamic model.
  • The study analyzed data from 299 SFTS patients using LASSO logistic regression to determine six key factors that predict disease progression and mortality, including age and specific clinical symptoms.
  • The developed dynamic nomogram effectively predicts the severity of SFTS at admission and helps estimate 28-day mortality, with its performance validated through various statistical measures and available for use online.
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  • The study investigates the effects of granulocyte colony stimulating factor (G-CSF) and neurotrophin receptor (NTR) on brain damage caused by cerebral ischemia-reperfusion injury in rats.
  • Rat models with focal middle cerebral artery occlusion were treated and compared to control groups, measuring infarct volume and motor function as well as conducting various assays to assess effects on inflammation and cell survival.
  • Results showed that G-CSF and NTR treatment significantly reduced brain injury, improved motor skills, and altered key inflammatory and anti-apoptotic markers, indicating their potential for promoting neuron regeneration and protective effects in ischemic conditions.
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  • The study investigates the role of hypomagnesemia (low magnesium levels) in predicting the black hole sign in patients with intracranial hemorrhage, involving 261 patients who survived initial scans.* -
  • Out of the 69 patients with hypomagnesemia, 65.2% exhibited the black hole sign, compared to 40.6% of those without hypomagnesemia, suggesting a link between low magnesium levels and this indicator.* -
  • Findings indicate that hypomagnesemia could be a significant predictive factor for the black hole sign, potentially aiding clinical decisions on treatment and managing the risk of rebleeding.*
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According to the diagnostic criteria for human herpesvirus 8 (HHV-8)-negative/idiopathic multicentric Castleman disease (iMCD) proposed by Castleman Disease Collaborative Network in 2017, there is a group of HHV-8-negative patients with multicentric Castleman disease (MCD) who do not have symptoms and hyperinflammatory state and do not meet the iMCD criteria. This retrospective study enrolled 114 such patients, described as asymptomatic MCD (aMCD), from 26 Chinese centers from 2000 to 2021. With a median follow-up time of 46.

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  • Lymphopenia, or low lymphocyte count, is linked to poor short-term outcomes in patients with anti-MDA5 positive dermatomyositis and interstitial lung disease (MDA5 + DM-ILD).
  • A study analyzing 263 patients found that lower lymphocyte counts were associated with higher risk of death within one month, particularly when lymphocyte levels declined over time.
  • Dynamic changes in lymphocyte levels provide a better indication of disease progression and prognosis than just looking at initial lymphocyte counts at baseline.
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  • This study looked at how eating plant protein and animal protein affects how fast our bodies age, using data from over 79,000 people in the UK.
  • The researchers found that eating more plant protein is linked to slower biological aging, while animal protein didn't show a similar effect.
  • It was discovered that swapping out some animal protein for plant protein can help reduce biological aging, except for one case where replacing yogurt with beans wasn’t helpful.
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Cisplatin resistance in ovarian cancer cells is mainly apoptosis resistant. Although other types of programmed cell death are highly involved in chemoresistance, which type can overcome cisplatin resistance remains unclear. The present study observed that cisplatin-sensitive SKOV3 cells and cisplatin-resistant SKOV3/DDP cells had different levels of sensitivity to sulfasalazine (SAS).

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Beef flavor plays a crucial role in consumer preference, yet research on this trait has been limited by past technological constraints. Intramuscular fat (IMF) is a key determinant of beef quality, influencing taste, marbling, and overall flavor. Xinjiang brown cattle (XBC), an indigenous breed from northern Xinjiang, China, presents significant variation in meat quality, with IMF content ranging from 0.

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The drug design principles are of great value in developing nanomedicines with favorable functionalities. Herein we propose a nanocarbon-enabled hybridization strategy to construct a pharmacologically cooperative nanodrug for improved cancer therapy in the light of pharmacophore hybridization in medicinal chemistry and the synthetic principles of nanocarbons. An antioxidant defense pharmacological inhibitor and a co-nucleation precursor are structurally hybridized into nanodrugs (SCACDs) forming carbon quantum dots.

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  • Lung cancer, particularly lung adenocarcinoma, can lead to brain metastases, which complicate prognosis and treatment options for patients.
  • This study analyzed data from 156 patients to determine how different pathological subtypes of lung adenocarcinoma affect outcomes, concluding that those with poorly differentiated tumors tend to have worse prognoses.
  • Interventions like radiation therapy, chemotherapy, and surgery may extend the time before brain metastasis occurs, suggesting that patients with less differentiated tumors may benefit from closer monitoring and more aggressive treatment strategies.
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  • Denitrification is important for how nitrogen works in rice fields and affects how much nitrogen is lost and greenhouse gases are released.
  • Scientists studied nitrogen loss in 45 rice paddies across China using advanced techniques, finding that different farming methods led to varying nitrogen loss rates.
  • The research showed that soil pH and microbial communities significantly influence nitrogen loss, highlighting the need to balance different types of bacteria to reduce emissions.
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Hexavalent chromium (Cr(VI)) is an environmental pollutant and recognized as a human carcinogen. Therefore, it is necessary to develop a simple and sensitive detection technique for Cr(VI). Herein, it is found that Cu interacts with guanosine 5'-monophosphate (GMP) to form a homogeneous Cu(II)-GMP complex (Cu·GMP) that efficiently displays the oxidoreductase-like catalytic activity.

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  • A rare case involved an 18-year-old girl with severe lower abdomen pain and nausea, where doctors found a large cystic mass that was causing trouble with her ovary.
  • After using ultrasound to check for problems, doctors figured out that she had an accessory ovary and a cystic teratoma that was twisted.
  • The girl had successful surgery to fix the problem, and later check-ups showed that both her regular and accessory ovaries were doing well after the treatment.
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Mild cognitive impairment (MCI) is a neurodegenerative condition that is clinically prevalent among the elderly. EGB761 is widely recognized for its promising therapeutic properties in both the prevention and treatment of neurodegenerative disorders. The aim of this study was to investigate the effects of EGB761 in MCI and the underlying molecular mechanism.

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Emergency response plans for tunnel vehicle accidents are crucial to ensure human safety, protect critical infrastructure, and maintain the smooth operation of transportation networks. However, many decision-support systems for emergency responses still rely significantly on predefined response strategies, which may not be sufficiently flexible to manage unexpected or complex incidents. Moreover, existing systems may lack the ability to effectively respond effectively to the impact different emergency scenarios and responses.

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