Publications by authors named "Chunhua Tian"

Micro/nanomotors (MNMs) propelled by hydrogen peroxide (HO) fuel have garnered significant interest in sensitive colorimetric detection and rapid catalytic degradation of organic pollutants. However, their practical applications remain constrained by multiple limitations including toxic high-concentration HO requirements, sluggish Fe/Fe redox cycling, and secondary contamination risks from metal ion leaching. Herein, we rationally developed a novel magnetic tubular FeCu@NC/MnO micromotor through multistep fabrication using kapok-derived C microtubes as templates.

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Vitamin B6 is frequently utilized as a therapeutic agent for nausea and vomiting of pregnancy (NVP). Research indicates that excessive intake of vitamin B6 can have implications on neurological function, underscoring the importance of cautious consideration when administering vitamin B6 treatment during early pregnancy. This systematic review investigates the effects of high doses of vitamin B6 on pregnant women experiencing NVP.

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Carbon-based magnetic molecular junctions are promising candidates for nanoscale spintronic applications because they are atomically thin and possess high stability and peculiar magnetism. Herein, based on first-principles and non-equilibrium Green's function, we designed a carbon-based molecular spintronic device composed of carbon atomic chains, zigzag-edged graphene nanoribbon (ZGNR), and a perylene molecule. Our results show that the device exhibits integrated spintronic and spin caloritronic functionalities, such as the bias-voltage driven spin filtering effect, negative differential resistance effect and giant magnetoresistance, temperature-gradient driven spin Seebeck effect, thermal spin filtering effect, high thermal magnetoresistance, and thermal colossal giant magnetoresistance.

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Objective: Long noncoding RNA neuroblastoma-associated transcript 1 (NBAT1) is implicated in the progression of various cancers. Nevertheless, its biological function in endometrial cancer (EC) remains unknown.

Methods: The levels of NBAT1, miR-21-5p, and PTEN in EC cells and EC tissues were examined by RT-qPCR.

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Article Synopsis
  • - The paper discusses new visualization methods to help understand how charge transfer occurs when light interacts with donor-acceptor systems, both neutral and charged.
  • - These methods focus on two key concepts: charge density difference and transition density matrix, which help to highlight the underlying physical processes involved.
  • - By using these visualization techniques, the authors aim to deepen the understanding of photoinduced charge transfer mechanisms in these systems.
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This study was aimed to analyze the changes in renal function of patients undergoing percutaneous coronary intervention (PCI) surgery and the characteristics of their computed tomography (CT) image based on artificial intelligence algorithms. In this study, 104 patients with coronary atherosclerotic heart disease (CAHD) were treated as the research objects. They were divided into an experimental group (patients who underwent CAG and PCI within 1 week after enhanced coronary CT (ECCT)) and the control group (patients who underwent CAG and PCI within 1-3 weeks after ECCT).

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Artemisinin and its derivatives are of great research value in biology. In this work, we study their chiral and optical properties. The multidimensional multifunction analysis method is used to analyze the linear and nonlinear optical processes (one-photon and two-photon absorption: OPA and TPA), electronic circular dichroism (ECD), and Raman optical activity (ROA) mechanisms under light excitation.

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Background: Long non-coding RNAs (lncRNAs) have been demonstrated to play critical roles in various diseases. Our bioinformatics analysis showed that lncRNA TNFα and heterogenous nuclear ribonucleoprotein L (hnRNPL) related immunoregulatory LincRNA (THRIL) may interact with miR-19a, which targets TNF-α. This study aimed to explore the role of THRIL, an enhancer of LPS-induced inflammatory, in sepsis.

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In this work, we use the visualization method to study their intramolecular electric-magnetic interactions and reveal the physical mechanism of their electronic transition to explain the cause of the opposite ECD spectrum orientations. Azaphilone A and B are two chiral molecules, due to their differing chirality, the electronic circular dichroism (ECD) spectra of bromophilone A and B are very different at 431 nm. Based on the two-step transition process, the charge-transfer characteristics of the corresponding two-photon excited states of the two chiral molecules are analysed in detail by calculating the photoinduced charge transfer and electron-hole coherence in the two-photon absorption (TPA) process.

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In this paper, we study the donor-length dependent photoinduced charge transfer in two-photon absorption (TPA). In the donor-acceptor (D-A) system of oligo-thiophene-fullerene, two kind of lengths of oligo-thiophene are chosen to study the donor-length dependent photoinduced charge transfer in TPA. It is found that donor length can significantly influence the rate of charge transfer.

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Binary dielectric composites are viewed as a kind of promising candidate for conventional magnetic materials in the field of microwave absorption. Herein, we demonstrate the successful fabrication of core-shell BaTiO@carbon microspheres through a space-confined strategy. The electromagnetic properties of BaTiO@carbon microspheres can be easily tailored by manipulating the relative content of carbon shells.

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On the basis of tight-binding approximation, the energy absorption of 2D atomic clusters is calculated by the linear response theory. Through the energy-absorption peaks in the presence of different external potentials, various types of plasmon modes are specified in clusters with dozens to hundreds atoms, such as transverse dipole plasmon, longitudinal dipole plasmon, transverse quadrupole plasmon, and longitudinal quadrupole plasmon. Moreover, the transformation of plasmon from quantum to classical mode is observed in clusters with different shape and different electron density.

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We review photoinduced charge transfer in organic solar cells without and with an external electric field and then we introduce the visualization methods of the transition density, charge difference density and transition density matrix for the analysis of the photoinduced charge transfer in a neutral system and a charged system excited by one-photon and two-photon absorption. This review will not only promote a deeper understanding of the available theories and methods of PICT, but also lead to further developments in this field.

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A series of magnetic FeCo alloy/carbon composites have been successfully prepared through in situ pyrolysis of Prussian blue analogues (PBAs) with different Fe/Co ratios. The Fe/Co ratio can affect the crystalline phase, particle size, and magnetic property of the FeCo alloy particles, as well as the relative graphitization degree of the carbon frameworks. As a result, the electromagnetic functions of these composites will be highly associated with the Fe/Co ratio, where high Co content is beneficial to the formation of strong dielectric loss and moderate Co content can facilitate the magnetic loss.

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Highly uniform core-shell composites, polypyrrole@polyaniline (PPy@PANI), have been successfully constructed by directing the polymerization of aniline on the surface of PPy microspheres. The thickness of PANI shells, from 30 to 120 nm, can be well controlled by modulating the weight ratio of aniline and PPy microspheres. PPy microspheres with abundant carbonyl groups have very strong affinity to the conjugated chains of PANI, which is responsible for the spontaneous formation of uniform core-shell microstructures.

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A rice CDPK gene, OsCDPK14 (AY144497), was cloned from developing caryopses of rice (Oryza sativa cv. Zhonghua 15). Its cDNA sequence (1922 bp) contains an ORF encoding a 514 amino acids protein (56.

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