Publications by authors named "Yiming Li"

Despite the great progress in molecule photocatalytic solar energy conversion, it is particularly challenging to realize a photocatalytic overall reaction in a non-noble metal complex, which represents a new paradigm for photosynthesis. In this study, a class of novel non-noble metal complexes with head-to-tail geometry were designed and readily synthesized via the coordination of triphenylamine-modified 2,2': 6',2″-terpyridine ligands with Zn. As expected, these complexes exhibited the desired through-space charge-transfer transition, generating both long-lived excited states (on the order of microseconds) and separate redox centers under visible-light irradiation.

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Objective: Alzheimer's disease (AD) is a leading cause of dementia, with a rising global burden. Remnant cholesterol (RC), a component of triglyceride-rich lipoproteins, has been implicated in cardiovascular diseases and metabolic disorders, but its role in AD remains unclear. This study investigated the association between RC levels and the risk of AD among elderly patients with type 2 diabetes (T2D) in a real-world clinical setting.

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This study proposes a novel method for evaluating the risk of adverse events (AE) in patients with coronary stenosis based on the morphology and hemodynamics along a whole coronary artery. Twenty-eight specific coronary artery tree models with different stenotic degrees are established from the CCTA images and divided into AE group and Non-AE group. Pressures are obtained by computational fluid dynamics method.

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Fourteen undescribed sesquiterpenes, named curcumaones A-N (1-14), as well as forty-four (15-58) known ones, were isolated from the secondary rhizomes of Curcuma wenyujin. The structures and absolute configurations of 1-14 were elucidated based on NMR spectroscopic analyses, high resolution electrospray ionization mass spectroscopy (HRESIMS) data and electronic circular dichroism (ECD) spectral analysis. Among these, five sesquiterpenes with the peroxide linkage (1-5) were obtained and the change of chemical shift between the α-C connecting the peroxide linkage and the oxygen atom has been discussed.

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Background: This study aimed to establish a voxel-based map to predict the occurrence of cerebellar mutism syndrome (CMS) and investigate the relationship between CMS and motor dysfunction.

Method: This multicenter study cohort included 224 patients diagnosed with medulloblastoma at Beijing Children's Hospital (n = 88) and Beijing Tiantan Hospital (n = 136). The dataset was randomly divided into training (n = 95), test (n = 41), and validation (n = 88) datasets.

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Background And Objectives: Acoustofluidic manipulation of particles and biological cells has been widely applied in various biomedical and engineering applications, including effective separation of cancer cell, point-of-care diagnosis, and cell patterning for tissue engineering. It is often implemented within a polydimethylsiloxane (PDMS) microchannel, where standing surface acoustic waves (SSAW) are generated by sending two counter-propagating ultrasonic waves on a piezoelectric substrate.

Methods: In this paper, we develop a full cross-sectional model of the acoustofluidic device using finite element method, simulating the wave excitation on the substrate and wave propagation in both the fluid and the microchannel wall.

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The full utilization of lignocellulose involves two distinct catalytic routes: i) oxidative depolymerization of lignin and ii) acid/alkaline hydrolysis of hemicellulose and cellulose. To improve efficiency and reduce costs, constructing a single-cluster catalyst represents a desirable yet challenging strategy. Herein, triple-functional molecular polyoxometalates (POMs), NLLHVMoO (n = 1-6) were fabricated using N-lauroyl-l-lysine (NLL) and HVMoO as precursors.

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Article Synopsis
  • - This study explores how microplastics (MPs) combined with oil form aggregates (MOPAs) when interacting with particles in nearshore environments, affecting their vertical transport and fate.
  • - It was found that the majority of the MPs, particularly those with specific chemical groups, suspended in water columns, while particles in the sediment phase absorbed these composite pollutants, ultimately altering their structure and composition.
  • - Additionally, the research highlights that smaller degraded MPs and oil can resuspend in water, showing a decrease in mass and changing sizes of oil droplets during the degradation process, contributing to a better understanding of the behavior of these pollutants in aquatic environments.
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A bacterial strain, REN37, was isolated from fermented grains of Baijiu samples collected from Sichuan, PR China. The cells of strain REN37 was Gram-negative and aerobic. The cellular morphology exhibited rod-shaped cells without flagellum, displaying non-motility.

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Understanding the effect of clay on the mechanical properties and strength criteria of hydrate-bearing sediments (HBS) is essential for evaluating the safety of clay-rich reservoirs. In this study, a series of triaxial shear tests were conducted to investigate the impacts of clay type and content on the mechanical behavior of I-HBS (hydrate-bearing sediments containing illite) and M-HBS (hydrate-bearing sediments containing montmorillonite). The findings reveal that M-HBS exhibit greater susceptibility to strain hardening compared to I-HBS, accompanied by more extensive volume deformation, and both strain hardening and shear shrinkage intensify with increasing clay content.

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Article Synopsis
  • Sulfidogenic and methanogenic processes in sewer management create issues like organic losses that are often overlooked, as current methods focus mainly on chemical dosing for control.
  • In a laboratory study, the organic silicon quaternary ammonium salt (QSA) was used in sewer reactors, suppressing sulfidogenic activity recovery and maintaining low methanogenic activity levels after treatment.
  • The study found that QSA attached to biofilms through electrostatic attraction, improving control efficiency and altering microbial communities, with preliminary tests showing enhanced biodegradability of effluent, supporting its use in wastewater management.
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Investigating demand-side emission reduction through individual behavior and public infrastructure remains a focal point, yet existing studies lack a temporal perspective on their relationship. This study introduces the concept of carbon time intensity (CTI), which refines carbon emission analysis from total quantity to temporal structure, aiming to deepen the understanding of demand-side mitigation through an integrated spatiotemporal framework. This study, drawing on data from the 2021 China Time Use Survey and Household Finance Survey, investigates the mechanisms by which urban basic public service (BPS) affect residents' travel carbon time intensity (TCTI).

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Abscisic acid (ABA) regulates plant stress adaptation, growth and reproduction. Despite extensive ABA-Ca signalling links, imaging ABA-induced increases in Ca concentration has been challenging, except in guard cells. Here we visualize ABA-triggered [Ca] dynamics in diverse organs and cell types of Arabidopsis thaliana using a genetically encoded Ca ratiometric sensor with a low-nanomolar Ca-binding affinity and a large dynamic range.

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Background: The objective of this randomized controlled trial was the comparison of a stannous fluoride (SnF2) dentifrice stabilized with nitrate and phosphates (test) to a regular fluoride dentifrice (negative control) for the control of plaque and gingivitis over 6 months.

Methods: A total of 80 adult participants were enrolled in this study that was conducted in Loma Linda, California. After randomization and blinding of study personnel and patients, enrolled participants were provided instructions for the use of their assigned dentifrice.

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Infrared (IR) radiation thermography is extensively utilized in diverse fields due to its non-contact capability. Nevertheless, its effectiveness is often compromised by the significant emissivity variations among different objects, limiting its application to specific setups or focused object types. Colorimetric thermography is introduced as an alternative emissivity-independent method of radiation thermometry.

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Background: Digoxin is a commonly used cardiac glycoside drug in clinical practice, primarily transported by P-glycoprotein (P-gp) and susceptible to the influence of P-gp inhibitors/inducers. Concurrent administration of ritonavir and digoxin may significantly increase the plasma concentration of digoxin. Due to the narrow therapeutic window of digoxin, combined use may lead to severe toxic effects.

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Headaches have emerged as a prevailing global health concern, impacting millions of individuals and posing challenges to public health care systems. With an escalating number of patients seeking complementary therapies to attain a more holistic approach for headaches, Traditional Chinese Medicine has gained significant popularity. It plays a pivotal role in advancing the safeguarding of health and the alleviation of prevalent, recurrent, and complex medical conditions.

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The subcellular localization of circular RNAs (circRNAs) is crucial for understanding their functional relevance and regulatory mechanisms. CircRNA subcellular localization exhibits variations across different cell lines, demonstrating the diversity and complexity of circRNA regulation within distinct cellular contexts. However, existing computational methods for predicting circRNA subcellular localization often ignore the importance of cell line specificity and instead train a general model on aggregated data from all cell lines.

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Background: The hyperintensity area surrounding the residual cavity on postoperative fluid-attenuated inversion recovery (FLAIR) image is a potential site for glioblastoma (GBM) recurrence. This study aimed to develop a nomogram using quantitative metrics from subregions of this area, prior to chemoradiotherapy (CRT), to predict early GBM recurrence.

Methods: Adult patients with GBM diagnosed between October 2018 and October 2022 were retrospectively analyzed.

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Article Synopsis
  • Neobavaisoflavone (NBIF) is a natural antioxidant that helps protect heart cells from damage due to oxidative stress by improving mitochondrial function.
  • In experiments, HO was used to induce oxidative stress in heart cells (H9c2), and it led to harmful effects like lipid peroxidation and mitochondrial dysfunction, which NBIF treatment countered effectively.
  • The study found that NBIF reduced harmful protein expressions related to lipid peroxidation and enhanced mitochondrial integrity, suggesting it operates through the ALOX15/PGC-1α pathway to protect heart cells.
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The combination of atomically precise nanoclusters (APNCs) and reticular frameworks is promising for generating component-specific nanocomposites with emergent properties. However, traditional liquid-phase synthesis often hampers this potential by damaging APNCs and limiting combination diversity. Here, mechanochemical synthesis to explore the encapsulation of diverse oil- and water-soluble APNCs within various reticular frameworks is employed, establishing a database of 21 unique APNC-framework combinations, including metal-organic frameworks (MOFs), covalent-organic frameworks (COFs), hydrogen-bonded organic frameworks (HOFs), and multivariate MOFs.

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Article Synopsis
  • Metabolic disorders contribute to diabetic vascular complications, particularly diabetic retinopathy, which is a major cause of blindness in working-age adults.
  • Researchers found high levels of O-GlcNAc modification in retina endothelial cells of individuals with diabetic retinopathy, and inhibiting this modification can improve vascular issues.
  • The study highlights how the O-GlcNAc modification affects the Hippo pathway proteins YAP and TAZ, promoting dysfunction through a process involving glucose metabolism and suggests targeting this pathway might offer new therapeutic options.
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