Publications by authors named "Xiyuan Sun"

Currently, facing electromagnetic protection requirement under complex aqueous environments, the bacterial reproduction and organic dye corrosion may affect the composition and micro-structures of absorbers to weaken their electromagnetic properties. To address such problems, herein, a series of CoFeO@BCNPs (cobalt ferrite @ bio-carbon nanoparticles) composites are synthesized via co-hydrothermal and calcining process. The coupling of magnetic cobalt ferrite and dielectric bio-carbon derived from Apium can endow the composite multiple absorption mechanisms and matched impedance for effective microwave absorption, attaining a bandwidth of 8.

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Although pre-treatment assessments of the capacity for the psychotherapy process can aid in identifying patients experiencing great difficulties in therapy and in tailoring therapies for individual patients, limited information exists for adolescents. To address this gap, this study followed the World Health Organization's age standards for adolescents (younger adolescents aged 10-14 years; older adolescents aged 15-19 years), examined the psychometric properties of the Capacity for Psychotherapy Process Scale (CFPPS; mainly used for adult patients) in these two groups of adolescents, and compared their capacities for the psychotherapy process. The participants were 434 younger adolescent (mean age = 13.

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Background: Childhood abuse and neglect are typically considered as two different forms of maltreatment. Previous international studies have found differential effects of abuse and neglect on prosocial behavior, but this and the mediating pathway underlying these associations have not been examined in a Chinese sample. Our study aims to examine the effects of childhood abuse and neglect on prosocial behavior in Chinese participants and test the unique mediating roles of different empathic components in these associations.

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Colorectal cancer (CRC) represents a major health concern that can be screened for by the fecal immunochemical test (FIT), which detects blood in the stool. CRC detection sensitivity for hemoglobin (Hb) combined with transferrin (Tf) is higher than for hemoglobin alone. We developed a europium fluorescent microsphere-based quantitative lateral flow immunochromatography strip to detect fecal Hb and Tf.

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The interactions of nucleobase with Au cluster were studied utilizing density functional theory (DFT). We find that the nucleobases were attached with Au through Au-N or Au-O bonds. The orders of calculated adsorption energy are cytosine > adenine > guanine > thymine.

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Article Synopsis
  • A novel magnetic nanocomposite of NiMnFeO/carbonized chaff has been synthesized using co-carbonization and hydrothermal methods.
  • The composite demonstrated superior microwave absorption properties, achieving a maximum reflection loss of -14.58 dB at 1.91 GHz with a significant bandwidth of 0.95 GHz.
  • This study highlights an innovative approach to creating effective and eco-friendly electromagnetic wave absorbers by leveraging renewable biomaterials.
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Traditional Chinese medicine has been widely used in cancer treatment in China. Yangyin Fuzheng Decoction is a traditional Chinese compound medicine, composed of 12 traditional Chinese herbs. This study aimed to investigate anti-tumor activity and the underlying mechanisms of Yangyin Fuzheng Decoction combined with cisplatin in the treatment of lung cancer.

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The Saturn-like charge-transfer complex Li&B, which was recently predicted with extensive first-principles theory calculations, were studied as a candidate for hydrogen storage material in the present work. The bonding characters of Li-B, B-B and Li-H bonds were revealed by the quantum theory of atoms in molecules (QTAIM). Each Li atom in Li&B cluster can bind six H molecules at most, which results into the gravimetric density of 10.

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The interaction natures between Pu and different ligands in several plutonyl (VI) complexes are investigated by performing topological analyses of electron density. The geometrical structures in both gaseous and aqueous phases are obtained with B3LYP functional, and are generally in agreement with available theoretical and experimental results when combined with all-electron segmented all-electron relativistic contracted (SARC) basis set. The Pu- O y l bond orders show significant linear dependence on bond length and the charge of oxygen atoms in plutonyl moiety.

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A high-stability icosahedral cluster (Ta12(2+)) with spherical aromaticity was found within a DFT framework. The spherical aromaticity of the icosahedral Ta12(2+) cluster was confirmed by a high symmetry, a short bond length, a high vibrational frequency, a large HOMO-LUMO gap and negative NICS(0) values. The icosahedral Ta12(2+) cluster is the first example of a bare metal cluster with a total of 58 valence electrons.

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The low-lying structures of tantalum cluster cations up to n = 16 are investigated using hybrid HF/density functional theory (DFT) functionals (B3P86) in conjunction with relativistic effective core potential and corresponding basis set. The vibrational spectra of tantalum cluster cations are simulated with one empirical scaling factor of 0.943, and compared to the experimental ones [P.

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The structural, electronic, and magnetic properties of iridium clusters with sizes of n = 2-15 are investigated by employing the generalized gradient approximation of density functional theory. Simple cube evolution pattern is revealed for Ir(2-15) clusters, as predicted by previous reports. It is remarkable that for Ir(10), Ir(11) clusters, new generated isomers with higher stabilities relative to those reported in previous studies are obtained.

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The geometrical and electronic structures of W(n) (n=2-16) clusters are investigated within the framework of a gradient-corrected density functional theory. The close-packed configurations are preferred for small tungsten clusters up to n=16. The most energetic favorable structures of W(14), W(15), and W(16) clusters, exhibiting similar electronic band structures, are all formed based on body centered cubic (bcc) unit.

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Background And Objective: Metastasis of lung cancer is the leading cause of disease progression and treatment failure. Matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1) are related to the metastasis of lung cancer via regulating the degradation of extracellular matrix. This study was to observe the impacts of cisplatin (DDP) on the expression of MMP-9 and TIMP-1 in Lewis lung cancer, and explore their correlations and roles in metastasis.

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Currently, there is a critical need to develop high-throughput, low-cost, and accurate methods for genotyping of single-nucleotide polymorphisms (SNPs). The matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometrically based technique represents a new promising approach to SNP analysis. We have developed a new MALDI-TOF-based mini-sequencing assay, termed "VSET," for genotyping of SNPs.

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Purpose: Mutations in mononucleotide repeat sequence (MRS) are good indicators of high-frequency microsatellite instability (MSI-H) cancers, but it has been a challenge to detect such mutations in a large background of wild-type DNA; as in this setting, PCR errors often generate false positive mutant alleles. In this study, we developed a general strategy, referred to as probe clamping primer extension-PCR (PCPE-PCR), to detect MRS alterations in a large background of wild-type DNA.

Experimental Design: In PCPE-PCR, genomic DNA is first subjected to PCPE, in which mutant single-strand DNA molecules are preferentially produced.

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A new sample preparation procedure has been developed to improve the matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) analysis of low-concentration oligonucleotides. In this method, a few microL of the oligonucleotide solutions are first dispensed and allow drying and shrinking to a small spot on an anchoring target. Thereafter, a small volume (0.

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Mutations are important markers in the early detection of cancer. Clinical specimens such as bodily fluid samples often contain a small percentage of mutated cells in a large background of normal cells. Thus, assays to detect mutations leading to cancer need to be highly sensitive and specific.

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