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Effect of cerium on structure,magnetism and magnetostriction of Fe_(81)Ga_(19) alloy

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Journal of Rare Earths 2018年第7期36卷 721-724页

作者： Tingdong Zhou yu Zhang Daocheng luan Qing Cai School of Materials Science and Engineering Xihua University

FeGa alloy is a new kind of magnetostrictive material, and rare-earth cerium can improve its magnetostrictive property.（Fe（81）Ga（19））（100-x）Cex（x = 0, 0.3 at%, 0.7 at%, 1 at%） samples were prepared by doping cerium in Fe（81）Ga（19） alloy. Their microstructures and phases were studied, and valence electronic structures were investigated. Electromagnetic parameters, such as coercivity, saturation magnetization,remnant magnetization and saturation magnetostrictive coefficients（λs） of every sample were *** atoms are distributed at grain boundaries, and the Ce-doped alloys remain the A2 structure of FeGa alloy. When x is 0.7, the value of saturation magnetism is 217.08 emu/g, which is the maximum in the Ce-doped samples. The equivalent half length of single bond is the maximum also, and reaches to0.11380 nm. At the same time, the number of covalent electrons is 3.5672, and is the minimum of the Cedoped samples. Its As is the largest in the four samples. The change of As results in the change of equivalent half length of single bond in Ce-doped alloy.

关键词： FeGaCe alloy Valence electronic structure Electromagnetic parameter Saturation magnetostrictive coefficient Rare-earth doping

Annual advances in traditional medicine for tumor therapy in 2019

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Traditional Medicine Research 2020年第2期5卷 90-107页

作者： Xue Yang xin-yuan luan Department of Medical Oncology Tianjin Medical University General HospitalTianjin 300052China Department of Hepatobiliary and Pancreatic Surgery(3) Tianjin NanKai HospitalTianjin 300100China

Today,the treatment of tumors remains a difficult *** medicine has been used to treat cancer in different countries ***,while traditional medicine is popular globally,it is not yet accepted by Western medicine as some of the ingredients and the mechanism of action for the therapeutic effect have not been fully ***,scholars studying traditional medicine in the treatment of cancer have strived to solve this *** this review,we summarized the research progress of several traditional medicines used as tumor therapies in 2019 from the PubMed *** of tumors treated with traditional Chinese medicine(TCM)are popular worldwide and obtain the most attention,which attracts more researchers to this *** anti-tumor effects of Chinese herbal medicine-derived phytochemicals,such as polyphenols,polysaccharides,saponins,and alkaloids were the new research targets for *** anti-tumor effects of TCM formula such as Sijunzi decoction,and Xiaopi formula have attracted the most attention in the past *** addition to TCM,we also focused on the anti-tumor studies of other traditional medicines,including Thai traditional medicine,traditional medicine in Sri Lanka,traditional African medicine,traditional Korean medicine,and traditional Japanese medicine.

关键词： Traditional medicine Traditional Chinese medicine Tumor Phytochemicals Formula

Annual advances of traditional medicine on tumor immunity regulation in 2020

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Traditional Medicine Research 2021年第3期6卷 118-132页

Tumor burden remains a global health problem that threatens human life *** the past few years,the evolution of immune checkpoint inhibitors has represented one of the most successful approaches in the field of tumor *** regulating tumor immune microenvironment or enhancing body immunity have indicated a novel perspective to treat ***,an increased number of scientists have been shifting their research focus to explore the immunity regulation effects of anti-tumor traditional medicine or natural *** this review,we summarize the research progress of traditional medicines on tumor immunity regulation in *** findings suggest that more herbal medicine-derived phytochemicals and formulas were derived from traditional Chinese medicine,and more papers were published in comprehensive *** medicine can comprehensively regulate the tumor immune microenvironment,including natural killer cells,dendritic cells,CD4+/CD8+T lymphocytes,regulatory T cells,myeloid-derived suppressor cells,tumor-associated macrophages,immunosuppressive factors,and immune *** 2020,a greater number of research papers focused on active ingredients and formulas that regulate tumor-associated macrophages and immune *** ingredients such as flavonoids became a global hotspot in *** natural products were also found to exert synergistic anti-tumor activity with immune checkpoint inhibitors,such as ***,a distinct lack of high-quality experimental and clinical studies remains a prevalent and challenging issue that hinders the further development of traditional medicine.

关键词： Traditional medicine Traditional Chinese medicine Natural product Formula Immunity regulation Tumor microenvironment

Trace element and Nd isotope analyses of apatite in granitoids and metamorphosed granitoids from the eastern Central Asian Orogenic Belt:Implications for petrogenesis and post-magmatic alteration

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Geoscience Frontiers 2023年第2期14卷 71-85页

作者： xin-yu Long Jie Tang Wen-Liang Xu Chen-Yang Sun Jin-Peng luan Shuai Xiong Xiao-Ming Zhang College of Earth Sciences Jilin UniversityChangchun 130061China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Natural Resources of ChinaChangchun 130061China State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi’an 710069China Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Northeastern UniversityShenyang 110819China State Key Laboratory of Superhard Materials Jilin UniversityChangchun 130012China

We present in situ trace element and Nd isotopic data of apatites from metamorphosed and metasomatized(i.e.,altered)and unaltered granitoids in the Songnen and Jiamusi massifs in the eastern Central Asian Orogenic Belt,with the aim of fingerprinting granitoid petrogenesis,including both the magmatic and post-magmatic evolution *** from altered granitoids(AG)and unaltered granitoids(UG)are characterized by distinct textures and geochemical *** from AG have irregular rim overgrowths and complex internal textures,along with low contents of rare earth elements(REEs),suggesting the re-precipitation of apatite during epidote crystallization and/or leaching of REEs from apatite by metasomatic ***(t)values of the these apatites are decoupled from zircon eHf(t)values for most samples,which can be attributed to the higher mobility of Nd as compared to Sm in certain *** from UG are of igneous origin based on their homogeneous or concentric zoned textures and coupled Nd-Hf isotopic *** element variations in igneous apatite are controlled primarily by the geochemical composition of the parental melt,fractional crystallization of other REEbearing minerals,and changes in partition *** contents and Eu/Eu^(*) values of apatites from UG correlate with whole-rock Sr and SiO2 contents,highlighting the effects of plagioclase fractionation during magma *** from UG can be subdivided into four groups based on REE *** 1 apatites have REE patterns similar to the host granitoids,but are slightly enriched in middle REEs,reflecting the influence of the parental melt composition and REE *** 2 apatites exhibit strong light REE depletions,whereas Group 3 apatites are depleted in middle and heavy REEs,indicative of the crystallization of epidote-group minerals and hornblende before and/or during apatite crystallization,*** 4 apatites are depleted in heavy REEs,but e

关键词： Eastern CAOB Granitoid petrogenesis Apatite geochemistry Fluid-induced alteration Nd-Hf isotopic decoupling Crustal assimilation

Transient process of methane-oxygen diffusion flame-street establishment in a microchannel

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Frontiers in Energy 2022年第6期16卷 988-999页

作者： xin KANG yu WANG School of Civil Engineering and Architecture Wuhan University of TechnologyWuhan 430070China School of Automotive Engineering Wuhan University of TechnologyWuhan 430070China

“Flame-street”is an interesting diffusion flame behavior in which a series of flame-segments is separately distributed along the mixing layer in a narrow *** experimental phenomenon was experimentally and numerically investigated with the focus on the steady-state,thermo-chemical flame structures in previous *** the present paper,the dynamic formation process of a methane-oxygen diffusion flame-street structure was simulated with a reacting flow solver developed based on the open-source framework *** imposing a certain amount of ignition-energy near the channel outlet,a reaction-kernel was formed and ***,three separate flames were consecutively generated from this kernel and propagated within the *** whole process was completed within 15 ms and all the discrete flames were eventually in a ***,different propagation features were observed for the three flame segments:The leading flame experienced a flame shape/type change from a tribrachial structure in its fastpropagating phase to a long,trailing diffusion tail after being anchored to the *** successive flame had a much lower propagation speed,keeping its two wing-like(fuel-lean premixed and fuel-rich premixed)structure while moving toward its stabilization location,which was approximately in the middle of the *** last flame,after the ignition source was turned-off,was immediately convected a bit downstream,and eventually featured a similar two-branch-like structure as the second ***,chemical insights for the premixed and diffusion branches of the leading flame were also provided with the change of significance of some key elementary reactions focused on,in order to attain a detailed profiling of the flame-type *** paper is a first-ever one discussing the transient formation of flame-streets in literature and is believed to be useful for obtaining a comprehensive understanding of this unique flame characte

关键词： micro-combustion flame-street diffusion flame mixing layer flame propagation speed

Fe_(0.8)CoSe_(2) nanosphere coated by N-doped carbon for ultra- high rate potassium selenium battery

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Rare Metals 2021年第9期40卷 2455-2463页

作者： xin-xin Jia xin-Zhi yu Bing-An Lu Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education&Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices School of Physics and ElectronicsHunan UniversityChangsha 410082China

Potassium-selenium(K-Se) batteries are a promising electrical energy storage candidate because of the cost-effectiveness and material sustainability, yet they suffer from shuttle effect, volume expansion and low powder density. The development of Se-based cathode is an effective way to overcome the above issues. Here we designed a hollow nano-spherical Co-Fe bi-metallic selenide coated with N-doped carbon(denoted as CFS@N-C)as cathode for K-Se batteries. Bimetallic selenide is benefit to improve the conductivity of composite materials;N-doped carbon layer encapsulation effectively inhibits the dissolution of poly-selenides and relieves the volume expansion. The as-prepared K-Se battery exhibits excellent rate performance(300 mAh·g^(-1) at 1000 mA·g^(-1)) and slowcharge/ultrafast-dischargecapability(dischargeat5000 mA·g^(-1) and charge at 100 mA·g^(-1) with ultrahigh capacity of 227 mAh·g^(-1)) with Coulombic efficiency nearly 100%. In addition, the ex-situ high-resolution transmission electron microscopy(HRTEM) images reveal that the charge–discharge mechanism of CFS@N-C is K^(+) replaces the bimetal and forms K_(2)Se. The unique design in this work may provide certain directions on researching for high power density K-storage materials.

关键词： Potassium selenium battery High powder density Excellent rate performance Inhibit shuttle effects Tolerate volume changes

Transcranial direct current stimulation inhibits epileptic activity propagation in a large-scale brain network model

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Science China(Technological Sciences) 2023年第12期66卷 3628-3638页

作者： yu Ying FAN yuBo HAN Fang luan GuoMing WANG Qingyun School of Engineering Medicine Beihang UniversityBeijing 100191China Beihang University Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringKey Laboratory Biomechanics&MechanobiologyMinistry of EducationBeijing 100191China College of Information Science and Technology Donghua UniversityShanghai 201620China Beijing Key Laboratory of Epilepsy Sanbo Brain HospitalCapital Medical UniversityBeijing 100069China Department of Dynamics and Control Beihang UniversityBeijing 100191China Beijing Institute of Brain Disorders Capital Medical UniversityBeijing 100069China

Transcranial direct current stimulation(tDCS)is a noninvasive technique that uses constant,low-intensity direct current to regulate brain *** studies have shown that cathode-tDCS(c-tDCS)is effective in reducing seizure frequency in patients with *** to the heterogeneity and patient specificity of seizures,patient-specific epilepsy networks are increasingly important in exploring the regulatory role of *** this study,we first set the left hippocampus,parahippocampus,and amygdala as the epileptogenic zone(EZ),and the left inferior temporal cortex and ventral temporal cortex as the initial propagation zone(PZ)to establish a large-scale epilepsy network *** we set tDCS cathode locations according to the maximum average energy of the simulated EEG signals and systematically study c-tDCS inhibitory effects on the propagation of epileptic *** results show that c-tDCS is effective in suppressing the propagation of epileptic ***,to consider the patient specificity,we set specific EZ and PZ according to the clinical diagnosis of 6 patients and establish patient-specific epileptic *** find that c-tDCS can suppress the propagation of abnormal activity in most patient-specific epileptic ***,when the PZ is widely distributed in both hemispheres,the treatment effect of c-tDCS is not ***,we propose dual-cathode *** epilepsy models with a wide distribution of PZ,it can inhibit the propagation of epileptiform activity in other nodes except EZ and PZ without increasing the tDCS current *** results provide theoretical support for the treatment of epilepsy with tDCS.

关键词： epilepsy large-scale brain network modeling transcranial direct current stimulation neural mass model

Morphology and multifractal features of a guyot in specific topographic vicinity in the Caroline Ridge,West Pacific

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Journal of Oceanology and Limnology 2021年第5期39卷 1591-1604页

作者： yu GAN Xiaochuan MA Zhendong luan Jun YAN CAS Key Laboratory of Marine Geology and Environment Institute ofOceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Geology Pilot National Laboratory for MarineScience and Technology(Qingdao)Qingdao 266237China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao266071China

Massive seamounts have been surveyed and documented in the last ***,the morphologies of seamounts are usually described in qualitative manners,yet few quantitative detections have been carried ***,based on the high-re solution multi-beam bathymetric data,we report a recentlysurveyed guy ot on the Caroline Ridge in the West Pacific,and the large-scale volcanic structures and smallscale erosive-depositional landforms in the guyot area have been *** multifractal features of the guyot are characterized for the first time by applying multifractal detrended fluctuation analysis on the surveyed bathymetric *** results indicate that the multifractal spectrum parameters of the seafloor have strong spatial dependency on the fluctuations of local *** small-and large-scale components contribute to the degree of asymmetry of the multifractal spectrum(B),while the fluctuations of B are mostly attributed to the changes in small-scale *** maximum singularity strength(α0)correlates well with the roughness of large-scale landforms and likely reflects the large-scale topographic *** to traditional roughness parameters or monofractal exponents,multifractal spectra are able to depict not only the multiscale characteristics of submarine landforms,but also the spatial variations of scaling *** more comparative works are required for various seamounts,we hope this study,as a case of quantifying geomorphological characters and multiscale behaviors of seamounts,can encourage further studies on seamounts concerning geomorphological processes,ocean bottom circulations,and seamount ecosystems.

关键词： guyot morphology multifractal detrended fluctuation analysis(MFDFA) Caroline Ridge West Pacific Ocean

Exploring the compatibility theory of traditional Chinese medicine formulae:the disassembled prescriptions study

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Traditional Medicine Research 2023年第5期8卷 38-43页

Traditional Chinese medicine(TCM)has become very popular in the treatment of complex diseases worldwide in recent *** the promising performance of TCM,how herbs work synergistically in a formula and their therapeutic targets remain *** largely limits the correct use and modernization of TCM formulas *** study of disassembled prescriptions is important for investigating the compatibility theory of Chinese *** dissecting the mechanisms of TCM formulae,the compatibility principles of some well-known formulae,such as Realgar-Indigo naturalis,have been elucidated to a certain *** this review,several common methods of disassembled prescription studies are summarized,including those of single herb or mineral,sub-prescription,active ingredients or effective parts,large formulae,and systems pharmacology studies,as well as the methods of grouping based on the properties or efficacy of Chinese medicines,in order to provide evidence for formulae ***,some challenges to be addressed in disassembled prescriptions studies have been identified in this review.

关键词： compatibility theory of formulae traditional Chinese medicine disassembled prescriptions study systems pharmacology