Publications by authors named "Panpan Zhou"

Machine learning (ML) has emerged as a pioneering tool in advancing the research application of high-performance solid-state hydrogen storage materials (HSMs). This review summarizes the state-of-the-art research of ML in resolving crucial issues such as low hydrogen storage capacity and unfavorable de-/hydrogenation cycling conditions. First, the datasets, feature descriptors, and prevalent ML models tailored for HSMs are described.

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Background: Patients suffering from lower extremity venous ulcers typically undergo prolonged dressing changes, entailing extended treatment cycles and significant costs, creating an urgent need for effective continuous care. There is scarce literature reporting on the preferences and requirements for wound care within continuous care services for such conditions. Discrete choice experiments serve as an innovative method to elicit patient preferences, where the development of attributes and levels is a critically important process.

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In this experiment, five metal ions (K, Mg, Al, Ga, and Sn) were utilized as copigments to investigate their copigmentation processes with cyanidin-3--glucoside (C3OG) in simulated fruit wine solutions. The color characteristics were analyzed using Glories and CIELAB methods, and the copigmentation effects were determined spectrophotometrically. Thermodynamic parameters, including the equilibrium constant () and standard Gibbs free energy (Δ°), were calculated to comprehend the binding affinity between metal ions and C3OG.

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The effective utilization of hydrogen storage materials (HSMs) is hindered by impurity gas poisoning, posing a significant challenge for large-scale applications. This study elucidates the poisoning mechanisms of various impurities gases (CO, CO, O, Ar, He, CH, N) on ZrCo, Pd, U and LaNi. Impurities gases are categorized into active and inactive types based on their effecting behaviors and mechanisms on the hydrogenation of HSMs.

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Global climate warming and human activities have increased the magnitude and frequency of Microcystis surface blooms, posing significant threats to freshwater ecosystems and human health over recent decades. Heavy rainfall events have been reported to cause the disappearance of these blooms. Although some studies have employed turbulence models to analyze the movement characteristics of Microcystis colonies, the impact of rainfall is complex, comprehensive investigations on their vertical migration induced by short-term rainfall are still necessary.

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Article Synopsis
  • Researchers successfully created axially chiral C2-arylquinoline through an asymmetric reaction involving alkynes, using chiral phosphoric acid as a catalyst, achieving high yields and enantioselectivity.
  • The study outlines a detailed reaction mechanism divided into key steps: hydrogen transfer, C-N bonding, annulation, and dehydration, with multiple potential pathways for each step.
  • Theoretical analyses, including QTAIM and IGMH, clarified the influence of weak intermolecular interactions and provided insights into enantioselectivity, with theoretical calculations aligning well with experimental outcomes.
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The hematopoietic homeostasis in the bone marrow is inextricably intertwined with the immune milieu in peripheral circulation. Researches investigating the pathogenesis of systemic lupus erythematosus (SLE) have defined considerable secretion of inflammatory mediators and activation of pro-inflammatory cells. However, the impacts of "extrinsic" factors on hematopoietic stem and progenitor cells (HSPCs) remain unclear, and it is uncertain whether treatments can help coordinate the biased differentiation.

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Sjögren's syndrome (SS) is an autoimmune disease in which the salivary glands (SGs) and the lacrimal glands (LGs) are affected by lymphocytic infiltration and inflammation. It has been reported that interferon-α (IFN-α) released by plasmacytoid dendritic cells (pDCs) contribute to the pathology of SS, and ART has been shown to effectively ameliorates SS. Despite the current research endeavors, the mechanism of how ART works in the treatment of SS remains to be fully elucidated.

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The ubiquitination function in diabetic nephropathy (DN) has attracted much attention, but there is a lack of information on its ubiquitylome profile. To examine the differences in protein content and ubiquitination in the kidney between db/db mice and db/m mice, we deployed liquid chromatography-mass spectrometry (LC-MS/MS) to conduct analysis. We determined 145 sites in 86 upregulated modified proteins and 66 sites in 49 downregulated modified proteins at the ubiquitinated level.

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Tailings ponds formed by long-term accumulation of mineral processing waste have become a global environmental problem. Even worse, tailings ponds are often simply abandoned or landfilled after they cease to be used. This allows pollution to persist and continue to spread in the environment.

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Borax is strictly regulated in the food processing and pharmaceutical industry due to its physiological toxicity, and the development of a direct analytical method is essential for effectively monitoring the borax abuse. In this work, the fluorescence properties of flavonoids, including flavones, isoflavones and flavonols, were systematically investigated from aqueous to borax solutions, and it was found that the weak intrinsic fluorescence of flavonols could be pervasively sensitized by borax. A natural flavonol, morin, was subsequently chosen as a representative probe to develop a turn-on fluorescence sensing method for borax analysis, which achieved a linear response spanning four orders of magnitude with a detection limit of 1.

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Grain yield in rice is a complex trait and it is controlled by a number of quantitative trait loci (QTL). To dissect the genetic basis of rice yield, QTL analysis for nine yield traits was performed using an F population containing 190 plants, which was developed from a cross between Youyidao (YYD) and Sanfenhe (SFH), and each plant in the population evaluated with respect to nine yield traits. In this study, the correlations among the nine yield traits were analyzed.

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This study introduces a novel approach involving XB-mediated cross-coupling of α-trifluoromethylated alkyl bromides with coumarins and quinolinones under visible light irradiation. Both density functional theory (DFT) calculations and experimental studies converge to suggest that the noncovalent interaction between alkyl bromides and DMAP, intensified by the α-trifluoromethyl group, plays a pivotal role in facilitating this chemoselective reaction.

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Deuterium/Tritium (D/T) handling in defined proportions are pivotal to maintain steady-state operation for fusion reactors. However, the hydrogen isotope effect in metal-hydrogen systems always disturbs precise D/T ratio control. Here, we reveal the dominance of kinetic isotope effect during desorption.

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A new and efficient synthesis of rubriflordilactone A has been realized. The key transformations include the following: (1) an intramolecular Prins cyclization to establish the seven-membered ring containing two contiguous stereocenters; (2) a Mukaiyama hydration/oxa-Michael cascade to construct the B-ring; and (3) an unprecedented stereocontrol intermolecular -QM type [4 + 2]-cycloaddition to rapidly assemble core structure of rubriflordilactone A.

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Diabetic kidney disease (DKD), a major microvascular complication of diabetes, is characterized by its complex pathogenesis, high risk of chronic renal failure, and lack of effective diagnosis and treatment methods. GSK3β (glycogen synthase kinase 3β), a highly conserved threonine/serine kinase, was found to activate glycogen synthase. As a key molecule of the glucose metabolism pathway, GSK3β participates in a variety of cellular activities and plays a pivotal role in multiple diseases.

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Article Synopsis
  • - The study explores the reaction between sodium (Na) and hydrogen fluoride (HF), which forms sodium fluoride (NaF) and hydrogen gas, highlighting the formation of specific complexes during the reaction process.
  • - Detailed mechanisms are investigated, revealing that sodium initially interacts with HF to create a complex, leading to a transition state and subsequent bond formation, ultimately resulting in various complexes involving NaF and HF.
  • - Analyses like noncovalent interaction (NCI), quantum theory of atoms in molecules (QTAIM), and natural bond orbital (NBO) are used to understand the interactions within these complexes, enhancing our knowledge of the reactions between sodium and hydrogen fluoride.
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Background: Primary Sjögren's syndrome (pSS) is a chronic systemic autoimmune disease. There is no relevant research on whether the migratory ability of bone marrow mesenchymal stem cells (BM-MSC) is impaired in patients with pSS (pSS-BMMSC).

Methods: Trajectories and velocities of BM-MSC were analyzed.

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A polyvinylpyrrolidone-capped (PVP-capped) strategy is reported to synthesize Ag NPs on silicon wafers via galvanic replacement reaction for SERS detection of adenine, where PVP acts as stabilizing agent in synthesis and efficient enrichment in detection. The morphologies of Ag NPs are optimized with uniform particle size by adjusting synthesis conditions, which hold excellent SERS performances like a high enhancement factor of 1.42 × 10, good uniform, reproducibility, and transferable nature.

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Microbially mediated NO-N and Cr(VI) reduction is being recognized as an eco-friendly and cost-effective remediation strategy. Iron sulfide mineral, as a natural inorganic electron donor, has a strong influence on NO-N and Cr(VI) transformation, respectively. However, little is known about the simultaneous nitrate and chromium removal performance and underlying mechanism in an iron sulfide mineral-involved mixotrophic biofilter.

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Molybdenum disulfide (MoS) has become a new type of microwave absorption (MA) material due to the abundant functional groups and defects, high polarization effect, and controllable structural design. However, the development of MoS has been limited by its inherently low conductance losses and imperfect impedance matching. This study employs ammonium ion (NH) intercalation as a phase manipulation strategy to enhance dielectric loss and form heterogeneous structures by incorporating highly conductive 1T phase into the 2H-MoS crystal phase.

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The activation of ethers by weak interactions is a long-standing objective in supramolecular catalysis, but yet it remains an underdeveloped topic. The obstacles towards solving this problem are prominent since it is difficult for a weak interaction to cleave a relatively strong C-O σ-bond and moreover, the ionic intermediate composing of an alkoxide ion and an electrophilic carbocation would deactivate weak interaction donors. Herein, we describe a distinctive activation mode, dual Se···π and Se···O bonding, that could activate benzylic as well as allylic ether C-O σ-bonds to achieve cyclization, coupling and elimination reactions.

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Article Synopsis
  • Discrimination of amino acid (AA) enantiomers is crucial for disease diagnosis and treatment, and dual-mode probes enhance detection capabilities compared to single-mode probes.
  • This research presents carbon dot L-TCDs that effectively differentiate between glutamine (Gln) and valine (Val) enantiomers using both fluorescent and colorimetric methods.
  • The mechanism of chiral recognition involves the reaction with hydrogen peroxide (HO), leading to variable signals that help identify and quantify the enantiomers, indicating a promising strategy for efficient chiral recognition.
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Objective: This study investigated the effectiveness of a technique for eliminating cloudiness and managing liver function in treating liver fibrosis/cirrhosis associated with the Hepatitis B virus (HBV).

Methods: From January 2022 to January 2023, the researchers' hospital treated 200 patients with HBV-related liver fibrosis/cirrhosis. These patients constituted two groups for the study: the control group, consisting of 100 cases who received routine treatment, and a study group, consisting of 56 cases who received treatment with a combination of turbidity removal and liver regulation, in addition to the standard treatment given to the control group.

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