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新疆阿尔金西段瓦石峡南锂铍稀有金属矿成矿背景与勘查进展

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中国地质调查 2024年第3期11卷 17-24页

作者：张朋刘豹杨晓飞罗新涛邓浪江樊自春刘兴忠陈建中刘善宝王登红代鸿章新疆维吾尔自治区地质矿产勘查开发局第三地质大队新疆库尔勒841000 自然资源部成矿作用与资源评价重点实验室中国地质科学院矿产资源研究所北京100037

锂、铍等稀有金属矿产是重要的战略矿产资源。近年来,在阿尔金地区发现了多处稀有金属伟晶岩型矿床,已成为我国一处新的稀有金属成矿带,但调查研究水平总体较低。通过对阿尔金造山带的成矿动力背景的讨论,得出阿尔金造山带的稀有金属成... 详细信息

锂、铍等稀有金属矿产是重要的战略矿产资源。近年来,在阿尔金地区发现了多处稀有金属伟晶岩型矿床,已成为我国一处新的稀有金属成矿带,但调查研究水平总体较低。通过对阿尔金造山带的成矿动力背景的讨论,得出阿尔金造山带的稀有金属成矿作用涵盖了多个不同的造山运动构造演化阶段,证明该区域具备良好的稀有金属成矿条件,并具有巨大的找矿潜力。通过对位于阿尔金西段的瓦石峡南锂铍稀有金属矿进行勘查评价,发现其具有大型远景:瓦石峡南锂铍稀有金属矿体主要赋存于绿片岩相-角闪岩相变质岩系中的伟晶岩脉中,矿床类型为花岗伟晶岩型稀有金属矿床;已有勘查成果显示此矿床目前推断的稀有金属资源量达到中型以上矿床规模,并且随着勘查工作的进行,在深部及外围还有极大增储空间。研究成果对在阿尔金造山带内寻找同类型矿床具有借鉴意义。

关键词：阿尔金瓦石峡南锂铍稀有金属矿花岗伟晶岩型稀有金属矿床成矿动力背景找矿前景

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Accelerating photocatalytic hydrogen evolution and pollutant degradation by coupling organic co-catalysts with TiO_2

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Chinese Journal of Catalysis 2019年第3期40卷 380-389页

作者： Jun Shen Rui Wang Qinqin Liu xiaofei yang Hua Tang Jin yang School of Pharmacy Suzhou Vocational Health College Suzhou 215009 Jiangsu China School of Materials Science and Engineering Jiangsu University Zhenjiang 212013 Jiangsu China Department of Chemistry College of Science Nanjing Forestry University Nanjing 210037 Jiangsu China

Accelerating the separation efficiency of photoexcited electron-hole pairs with the help of highly active co-catalysts has proven to be a promising approach for improving photocatalytic activity. Thus far, the most developed co-catalysts for semiconductor-based photocatalysis are inorganic materials;the employment of a specific organic molecule as a co-catalyst for photocatalytic hydrogen evolution and pollutant photodegradation is rare and still remains a challenging task. Herein, we report on the use of an organic molecule, oxamide (OA), as a novel co-catalyst to enhance electron- hole separation, photocatalytic H2 evolution, and dye degradation over TiO2 nanosheets. OA-modified TiO2 samples were prepared by a wet chemical route and demonstrated improved light absorption in the visible-light region and more efficient charge transport. The photocatalytic performance of H2 evolution from water splitting and rhodamine B (RhB) degradation for an optimal OA-modified TiO2 photocatalyst reached 2.37 mmol g^–1 h^–1 and 1.43 × 10^-2 min^-1, respectively, which were 2.4 and 3.8 times higher than those of pristine TiO2, respectively. A possible mechanism is proposed, in which the specific π-conjugated structure of OA is suggested to play a key role in the enhancement of the charge transfer and catalytic capability of TiO2. This work may provide advanced insight into the development of a variety of metal-free organic molecules as functional co-catalysts for improved solar-to-fuel conversion and environmental remediation.

关键词： TiO2 Oxamide Co-catalyst Photocatalysis Hydrogen evolution Dye degradation

Aqueous-phase formation of N-containing secondary organic compounds affected by the ionic strength

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Journal of Environmental Sciences 2024年第4期138卷 88-101页

作者： Yuqi Gan Xiaohui Lu Shaodong Chen Xinghua Jiang Shanye yang Xiewen Ma Mei Li Fan yang Yewen Shi xiaofei Wang Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention Department of Environmental Science and EngineeringFudan UniversityShanghai 200433China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Guangdong Provincial Observation and Research Station for Coastal Atmosphere and Climate of the Great Bay Area Southern University of Science and TechnologyShenzhen 518055China Institute of Mass Spectrometry and Atmospheric Environment Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air PollutionJinan UniversityGuangzhouChina Environmental Monitoring Station of Pudong New District Shanghai 201200China Shanghai Municipal Center for Disease Control&Prevention Shanghai 200336China

The reaction of carbonyl-to-imine/hemiaminal conversion in the atmospheric aqueous phase is a critical pathway to produce the light-absorbing N-containing secondary organic compounds(SOC).The formation mechanism of these compounds has been wildly investigated in bulk solutions with a low ionic ***,the ionic strength in the aqueous phase of the polluted atmosphere may be *** is still unclear whether and to what extent the inorganic ions can affect the SOC *** we prepared the bulk solution with certain ionic strength,in which glyoxal and ammonium were mixed to mimic the aqueous-phase *** characterization by High-resolution Mass Spectrometry was performed to identify the N-containing products,and the light absorption of the mixtures was measured by ultraviolet-visible ***-nine N-containing compounds were identified and divided into four categories(N-heterocyclic chromophores,high-molecular-weight compounds with N-heterocycle,aliphatic imines/hemiaminals,and the unclassified).It was observed that the longer reaction time and higher ionic strength led to the formation of more N-heterocyclic chromophores and the increasing of the lightabsorbance of the *** added inorganic ions were proposed to make the aqueous phase somewhat viscous so that the molecules were prone to undergo consecutive and intramolecular reactions to form the *** general,this study revealed that the enhanced ionic strength and prolonged reaction time had the promotion effect on the lightabsorbing SOC *** implies that the aldehyde-derived aqueous-phase SOC would contribute more light-absorbing particulate matter in the industrial or populated area where inorganic ions are abundant.

关键词： Ionic strength Carbonyl-to-imine/hemiaminal Heterocyclic Brown carbon Mass spectrometry Aqueous-phase reaction

JAX-CNV:A Whole-genome Sequencing-based Algorithm for Copy Number Detection at Clinical Grade Level

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Genomics, Proteomics & Bioinformatics 2022年第6期20卷 1197-1206页

作者： Wan-Ping Lee Qihui Zhu xiaofei yang Silvia Liu Eliza Cerveira Mallory Ryan Adam Mil-Homens Lauren Bellfy Kai Ye Charles Lee Chengsheng Zhang Precision Medicine Center The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061China The Jackson Laboratory for Genomic Medicine FarmingtonCT 06032USA School of Cyber Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China Department of Pathology and Laboratory Medicine Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA School of Computer Science and Technology Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China MOE Key Lab for Intelligent Networks&Networks Security Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China Department of Life Sciences Ewha Womans UniversitySeoul 03760South Korea

We aimed to develop a whole-genome sequencing(WGS)-based copy number variant(CNV)calling algorithm with the potential of replacing chromosomal microarray assay(CMA)for clinical ***-CNV is thus developed for CNV detection from WGS *** performance of this CNV calling algorithm was evaluated in a blinded manner on 31 samples and compared to the 112 CNVs reported by clinically validated CMAs for these 31 *** result showed that JAX-CNV recalled 100%of these ***,JAX-CNV identified an average of 30 CNVs per individual,representing an approximately seven-fold increase compared to calls of clinically validated *** validation of 24 randomly selected CNVs showed one false positive,i.e.,a false discovery rate(FDR)of 4.17%.A robustness test on lowercoverage data revealed a 100%sensitivity for CNVs larger than 300 kb(the current threshold for College of American Pathologists)down to 10×*** CNVs larger than 50 kb,sensitivities were 100%for coverages deeper than 20×,97%for 15×,and 95%for 10×.We developed a WGS-based CNV pipeline,including this newly developed CNV caller JAX-CNV,and found it capable of detecting CMA-reported CNVs at a sensitivity of 100%with about a FDR of 4%.We propose that JAX-CNV could be further examined in a multi-institutional study to justify the transition of first-tier genetic testing from CMAs to ***-CNV is available at https://***/TheJacksonLaboratory/JAX-CNV.

关键词： Copy number variant Chromosomal microarray assay Whole-genome sequencing JAX-CNV Genetic testing

High-quality Arabidopsis thaliana Genome Assembly with Nanopore and HiFi Long Reads

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Genomics, Proteomics & Bioinformatics 2022年第1期20卷 4-13页

作者： Bo Wang xiaofei yang Yanyan Jia Yu Xu Peng Jia Ningxin Dang Songbo Wang Tun Xu Xixi Zhao Shenghan Gao Quanbin Dong Kai Ye MOE Key Laboratory for Intelligent Networks&Network Security Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China School of Computer Science and Technology Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China School of Life Science and Technology Xi’an Jiaotong UniversityXi’an 710049China School of Automation Science and Engineering Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China Genome Institute the First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061China

Arabidopsis thaliana is an important and long-established model species for plant molecular biology,genetics,epigenetics,and ***,the latest version of reference genome still contains a significant number of missing ***,we reported a high-quality and almost complete Col-0 genome assembly with two gaps(named Col-XJTU)by combining the Oxford Nanopore Technologies ultra-long reads,Pacific Biosciences high-fidelity long reads,and Hi-C *** total genome assembly size is 133,725,193 bp,introducing 14.6 Mb of novel sequences compared to the TAIR10.1 reference *** five chromosomes of the Col-XJTU assembly are highly accurate with consensus quality(QV)scores>60(ranging from 62 to 68),which are higher than those of the TAIR10.1 reference(ranging from 45 to 52).We completely resolved chromosome(Chr)3 and Chr5 in a telomere-to-telomere ***4 was completely resolved except the nucleolar organizing regions,which comprise long repetitive DNA *** Chrl centromere(CEN1),reportedly around 9 Mb in length,is particularly challenging to assemble due to the presence of tens of thousands of CEN180 satellite *** the cutting-edge sequencing data and novel computational approaches,we assembled a 3.8-Mb-long CEN1 and a 3.5-Mb-long *** also investigated the structure and epigenetics of *** clusters of CEN180 monomers were detected,and the centromere-specific histone H3-like protein(CENH3)exhibited a strong preference for CEN180 Cluster ***,we observed hypomethylation patterns in CENH3-enriched *** believe that this high-quality genome assembly,Col-XJTU,would serve as a valuable reference to better understand the global pattern of centromeric polymorphisms,as well as the genetic and epigenetic features in plants.

关键词： Centromere architecture CENH3 Bacterial artificial chromosome Telomere-to-telomere Model plant

Substrate stiffness in nerve cells

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Brain Science Advances 2023年第1期9卷 24-34页

作者： Weijin Si Jihong Gong xiaofei yang Key Laboratory of Cognitive Science Hubei Key Laboratory of Medical Information Analysis and Tumor Diagnosis&TreatmentLaboratory of Membrane Ion Channels and MedicineCollege of Biomedical EngineeringSouth-Central Minzu UniversityWuhan 430074China

Recently, substrate stiffness has been involved in the physiology and pathology of the nervous system. However, the role and function of substrate stiffness remain unclear. Here, we review known effects of substrate stiffness on nerve cell morphology and function in the central and peripheral nervous systems and their involvement in pathology. We hope this review will clarify the research status of substrate stiffness in nerve cells and neurological disorder.

关键词： substrate stiffness nerve cell neurite synapse pathology neurological diseases

Current-Induced Magnetic Switching in an L1_(0) FePt Single Layer with Large Perpendicular Anisotropy Through Spin–Orbit Torque

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Engineering 2022年第5期8卷 55-61页

作者： Kaifeng Dong Chao Sun Laizhe Zhu Yiyi Jiao Ying Tao Xin Hu Ruofan Li Shuai Zhang Zhe Guo Shijiang Luo xiaofei yang Shaoping Li Long You School of Automation China University of GeosciencesWuhan 430074China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems China University of GeosciencesWuhan 430074China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China China Resources Microelectronics Limited Shanghai 200072China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen 518000China Wuhan National High Magnetic Field Center Huazhong University of Science and TechnologyWuhan 430074China

In this study,current-induced partial magnetization-based switching was realized through the spin–orbit torque(SOT)in single-layer L1_(0) FePt with a perpendicular anisotropy(K_(u⊥))of 1.19×10^(7) erg·cm^(-3)(1 erg·cm^(-3)=0.1 J·m^(-3)),and its corresponding SOT efficiency(βDL)was 8×10^(-6) Oe·(A·cm^(-2))^(-1)(1 Oe=79.57747 A·m^(-1)),which is several times higher than that of the traditional Ta/CoFeB/MgO structure reported in past *** SOT in the FePt films originated from the structural inversion asymmetry in the FePt films since the dislocations and defects were inhomogeneously distributed within the ***,the FePt grown on MgO with a granular structure had a larger effective SOT field and effi-ciency than that grown on SrTiO_(3)(STO)with a continuous *** SOT efficiency was found to be considerably dependent on not only the sputtering temperature-induced chemical ordering but also the lattice mismatch-induced evolution of the *** findings can provide a useful means of efficiently electrically controlling a magnetic bit that is highly thermally stable via SOT.

关键词： L1_(0)FePt SOT Inversion asymmetry Magnetic switching Perpendicular anisotropy

Construction of carbon nitride and MoS_2 quantum dot 2D/0D hybrid photocatalyst:Direct Z-scheme mechanism for improved photocatalytic activity

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Chinese Journal of Catalysis 2017年第12期38卷 2160-2170页

作者： Yanhui Fu Zhijun Li Qinqin Liu xiaofei yang Hua Tang School of Materials Science and Engineering Jiangsu University Zhenjiang 212013 Jiangsu China

Graphite‐like carbon nitride(g‐C3N4)‐based compounds have attracted considerable attention because of their excellent photocatalytic *** this work,a novel direct Z‐scheme system constructed from two‐dimensional(2D)g‐C3N4nanoplates and zero‐dimensional(0D)MoS2quantum dots(QDs)was prepared through the combination of a hydrothermal process and microemulsion *** morphologies,structures,and optical properties of the as‐prepared photocatalysts were characterized by X‐ray diffraction,X‐ray photoelectron spectroscopy,atomic force microscopy,transmission electron microscopy,and UV‐vis diffuse reflectance *** addition,the photocatalytic performances of the prepared2D/0D hybrid composites were evaluated based on the photodegradation of rhodamine B under visible‐light *** results demonstrated that the introduction of MoS2QDs to g‐C3N4greatly enhanced the photocatalytic *** the optimum7%MoS2QD/g‐C3N4photocatalyst,the degradation rate constant was8.8times greater than that of pure g‐C3N4under visible‐light *** and electrochemical impedance spectroscopy results further demonstrated that the MoS2QD/g‐C3N4composites exhibited higher photocurrent density and lower chargetransfer resistance than those of the pure g‐C3N4or *** species trapping,terephthalic acid photoluminescence,and nitro blue tetrazolium transformation experiments were performed to investigate the evolution of reactive oxygen species,including hydroxyl radicals and superoxide *** possible enhanced photocatalytic mechanism was attributed to a direct Z‐scheme system,which not only can increase the separation efficiency of photogenerated electron‐hole pairs but also possesses excellent oxidation and reduction ability for high photocatalytic *** work provides an effective synthesis approach and insight to help develop other C3N4‐based direct Z‐scheme photocatalytic systems for environmental purification and ene

关键词： Photocatalysis Direct Z‐scheme Two‐dimensional (2D) Zero‐dimensional (0D) g‐C3N4 MoS2 quantum dots

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豆渣复配粉对老龄大鼠蛋白质消化动力的影响

沈阳师范大学学报（自然科学版） 2024年第1期42卷 49-54页

作者：杨晓菲孟浩然修文依陈桧铃陈思明乔国华沈阳师范大学粮食学院沈阳110034

我国老龄化人口逐年递增,老年人消化机能减退,进而影响健康状况.以老龄大鼠为动物模型来研究富含膳食纤维的豆渣复配粉对其肠道消化蛋白质功能的影响,进而对豆渣膳食纤维在老龄人中的应用提供理论依据和实践参考.采用挤压膨化的方法制... 详细信息

我国老龄化人口逐年递增,老年人消化机能减退,进而影响健康状况.以老龄大鼠为动物模型来研究富含膳食纤维的豆渣复配粉对其肠道消化蛋白质功能的影响,进而对豆渣膳食纤维在老龄人中的应用提供理论依据和实践参考.采用挤压膨化的方法制备了大豆渣复配粉,复配粉中豆渣与淀粉的比例为3∶7,复配粉可溶性膳食纤维的含量平均值为15.47%.大鼠试验选用15月龄大鼠15只,随机分为3组,分别接受3个处理:标准日粮组(AIN)、鱼肉蛋白组(FP)、鱼肉蛋白+豆渣复配粉组(FPS,0.3g/kg).每组5只大鼠,大鼠单笼饲养,组内设5个重复.结果表明:FPS组大鼠蛋白质整肠道消化率较其他2组显著提高(P<0.05),FP组显著降低了蛋白质消化率(P<0.05),FP组和FPS组大鼠肠道胰蛋白酶和肠肽酶都显著高于对照组(P<0.05),FPS组大鼠肝脏氨肽酶(APN),小肽转移酶(PepT1)和谷氨酸脱氢酶(GDH)mRNA表达量分别显著高于其他2组(P<0.05).以上研究结果说明豆渣复配粉有利于提高老龄大鼠对日粮蛋白的消化率,改善肠道相关蛋白消化酶的基因表达.

关键词：豆渣复配粉蛋白质消化动力老龄大鼠基因表达膳食纤维