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Textural and compositional zoning in plagioclase phenocrysts:implications for magma chamber processes in the Emeishan large Igneous Province,SW China

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Acta Geochimica 2023年第3期42卷 453-470页

作者： Qi Chen song-yue yu Lie-Meng Chen Sheng-Hua Zhou Jian Kang State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China University of Chinese Academy of Sciences Beijing 100049China

Textural and compositional zoning within plagioclase phenocrysts records the magma chamber processes,such as magma differentiation,magma recharge and mixing,and crustal *** plagioclase phenocrysts in the Daqiao and Qiaojia plagioclase-phyric basalts from the Emeishan Large Igneous Province(LIP)show complex textural and compositional zoning patterns,e.g.,normal,reverse,oscillatory,and patchy zoning *** plagioclase phenocrysts exhibit a core–rim normal zoning pattern(Pl-A)with euhedral high-An cores(An=76–78%,in mole fraction)and low-An rims(An=68–72%),indicative of the crystal regrowth processes caused by recharge of relatively evolved magmas after the formation of high-An *** phenocrysts have a core–rim reverse zoning pattern(Pl-B)with irregular ovaloid cores,characterized by extremely low An(60–61 mol%)and Ba(84–88 ppm)contents and extremely high87Sr/86Sr ratios(0.7120–0.7130).The rims of the Pl-B have relatively high An(69–72%),Ba(~160 ppm)contents,and low87Sr/86Sri(~0.7056).These Pl-B plagioclase phenocrysts preserve the information about the interaction between the crustal xenocrysts and the transporting *** plagioclase phenocrysts show a core–mantle–rim oscillatory zoning pattern(Pl-C)with multiple oscillations of An(70–80%),Ba(88–147ppm)from core to rim,revealing replenishment and mixing of multiple batches of basaltic melts with diverse compositions.87Sr/86Sr ratios of the Pl-C do not vary significantly(0.7050–0.7054).A small portion of phenocrysts has patchy patterns in the cores(Pl-D),where the low-An patches(72–75%)in form of elliptical or irregular elongated shapes were enclosed by the high-An domains(80–87%).These features can be attributed to crystal dissolution and regrowth processes during the reaction between earlyformed low-Cumulates and recharged hot primitive *** cores,mantles,and rims of different types of plagioclase phenocrysts(except the core of Pl-B)commonly display nearly constant Sr isotopic comp

关键词： Emeishan large Igneous Province Plagioclase-phyric basalt Compositional zoning Plagioclase phenocryst Magma replenishment

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Inspires effective alternatives to backpropagation:predictive coding helps understand and build learning

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Neural Regeneration Research 2025年第11期20卷 3215-3216页

作者： Zhenghua Xu Miao yu yuhang song School of Health Sciences and Biomedical Engineering Hebei University of TechnologyTianjinChina Department of Computer Science University of OxfordOxfordUK

Artificial neural networks are capable of machine learning by simulating the hiera rchical structure of the human *** enable learning by brain and machine,it is essential to accurately identify and correct the prediction errors,referred to as credit assignment(Lillicrap et al.,2020).It is critical to develop artificial intelligence by understanding how the brain deals with credit assignment in neuroscience.

关键词： assignment learning enable

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新型卤氧铋光催化材料的制备及降解水中污染物的研究

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化工管理 2023年第25期 154-162页

作者：宋月宇太原学院建筑与环境工程系山西太原030000

近年来,环境污染问题日益严重,水污染问题尤为突出。新型卤氧铋(BiOX)光催化剂由于其特殊的层状结构和良好的催化特性在水处理领域得到了广泛的应用。对BiOX系光催化剂的结构与性质进行了介绍,对近年来的制备条件及改性方法进行了综述,... 详细信息

近年来,环境污染问题日益严重,水污染问题尤为突出。新型卤氧铋(BiOX)光催化剂由于其特殊的层状结构和良好的催化特性在水处理领域得到了广泛的应用。对BiOX系光催化剂的结构与性质进行了介绍,对近年来的制备条件及改性方法进行了综述,并总结了其对水中部分污染物的降解性能及其机理。

关键词：卤氧铋光催化降解四环素

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一种用于测控通信的抗干扰软扩频算法研究

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航天控制 2016年第6期34卷 72-78页

作者：宋青平余跃高军军苏飞北京控制与电子技术研究所信息系统工程重点实验室北京100038

针对航天测控通信的抗干扰问题,提出了一种改进的软扩频捕获及译码算法,基于自相关和互相关特性设计了具有强抗干扰能力的扩频前导序列,提高了信号捕获的灵敏度,并根据解扩后的相关值采用软判决译码方式提高了传输链路的可靠性。分析及... 详细信息

针对航天测控通信的抗干扰问题,提出了一种改进的软扩频捕获及译码算法,基于自相关和互相关特性设计了具有强抗干扰能力的扩频前导序列,提高了信号捕获的灵敏度,并根据解扩后的相关值采用软判决译码方式提高了传输链路的可靠性。分析及仿真结果表明,本文算法在强干扰条件下依然有较高的信号捕获概率和较低的误码率,信号的捕获性能和误码率性能明显优于常规软扩频算法,能够满足航天测控抗干扰的实际应用。

关键词：抗干扰软扩频信号捕获软判决译码误码率

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Amino acid assisted aqueous synthesis of highly stable CsPbBr_(3)nanocrystals for cell imaging

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Nano Research 2025年第1期18卷 675-683页

作者： Xue Li Yanan Guo Guoying Tan Qingyi Liu Nan song yu Tang State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China

Lead halide perovskite nanocrystals(NCs)exhibit excellent optoelectronic performance and have drawn great interests in the fields of biological imaging and ***,the poor stability of CsPbX_(3)(X=Cl,Br,I)in water is still a challenge to hinder their practical *** this work,a facile strategy has been developed for aqueous synthesis of CsPbX_(3) nanocrystals,in which L-glutamic acid(LGlu)has been used to replace oleic acid in the synthetic *** from the synergic effects of L-Glu and oleylamine(OAm),CsPbBr_(3)nanocrystals(L-Glu/OAm-CsPbBr_(3)NCs)with high water stability have been directly prepared under a mild condition at room temperature in water,facilitated by the process of crystal phase transformation from Cs_(4)PbBr_(6) to CsPbBr_(3).L-Glu/OAm-CsPbBr_(3)NCs exhibit a high quantum yield of 85%and a narrow full width at half maximum of 16 nm,demonstrating their efficient luminescence in ***,L-Glu on the surface have contributed greatly to an acidic environment and passivation of surface defects,improving the water stability and dispersibility of CsPbBr_(3)***,L-Glu/OAm-CsPbBr_(3)NCs exhibit great biocompatibility due to the presence of L-Glu,resulting in their good performance for HeLa cell ***,we propose a facile and effective method to prepare CsPbBr_(3)nanocrystals with excellent water stability by using L-Glu and OAm as cooperated ligands and expand their application in cell imaging.

关键词： aqueous synthesis cell imaging lead halide perovskite nanocrystals L-glutamic acid phase transformation

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实时剪切波弹性成像评价干燥综合征患者涎腺弹性模量的初步临床研究

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中华超声影像学杂志 2018年第3期27卷 220-225页

作者：陈娟谢明星王静尤君冷松宋越项飞翔余铖华中科技大学同济医学院附属协和医院超声影像科武汉430022

目的应用实时剪切波弹性成像（RT-swE）测量干燥综合征（SS）患者腮腺及颌下腺的腺体硬度，探讨其对评价涎腺弥漫性病变的临床价值。方法选取40例SS患者作为SS组，35例健康志愿者作为对照组。根据核素显像上涎腺摄取和分泌功能减低程度... 详细信息

目的应用实时剪切波弹性成像（RT-swE）测量干燥综合征（SS）患者腮腺及颌下腺的腺体硬度，探讨其对评价涎腺弥漫性病变的临床价值。方法选取40例SS患者作为SS组，35例健康志愿者作为对照组。根据核素显像上涎腺摄取和分泌功能减低程度将患者分为轻度SS组（18例）和重度SS组（22例）。分别对双侧腮腺及颌下腺进行RT—SWE检查，获取腺体的弹性模量平均值（Emean），并绘制ROC曲线。结果①三组间左、右侧腺体Emean差异均无统计学意义（P〉0．05）。SS组患者腮腺及颌下腺Emean均较对照组增高，重度组增高更显著（P〈0．05）。②ROC曲线显示，RTSWE技术诊断轻度SS腮腺病变的Emean临界值为7．75kPa，敏感性94．4％，特异性97．1％，曲线下面积为0．998；诊断轻度SS颌下腺病变的Emean临界值为8．15kPa，敏感性100％，特异性91．4％，曲线下面积为0．998；诊断重度SS腮腺病变的Emean临界值为10．65kPa，敏感性90．9％，特异性97．1％，曲线下面积为0．999；诊断重度SS颌下腺病变的Emean临界值为10．40kPa，敏感性95．5％，特异性88．6％，曲线下面积为0．994。结论RT—SWE可准确测量SS患者的腮腺及颌下腺硬度，为临床评价涎腺弥漫性病变提供了新方法。

关键词：剪切波弹性成像干燥综合征弹性模量腮腺颌下腺

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Ultralight and superelastic MXene/reduced graphene oxide aerogels for electromagnetic interference shielding

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Nano Research 2025年第1期18卷 1-9页

作者： Xinfeng Zhou Yang Dai Guoyao yue Yiman Zhang Lulu Li Zhong-Zhen yu Peng Min Hao-Bin Zhang 21 State Key Laboratory of Organic-Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China Beijing Key Laboratory of Advanced Functional Polymer Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China Present address:BOE Technology Innovation Center BOE Technology Group Co.Ltd.Beijing 100176China Xi’an Modern Chemistry Research Institute Xi’an 710065China

Lightweight aerogels feature multifunctionality and a high porosity,yet accompanied with poor structure recovery under large strain *** this work,we develop an air bubble-ice crystal dual template and annealing strategy to integrate low density and high resilience for the conductive transition metal carbides/nitrides(MXene)composite *** air bubbles and ice crystals synergistically exclude the nanosheets to the gas-liquid interfaces,thereby constructing unique Y-shaped junctions and robust *** annealing process greatly enhances the interlayer *** external load,the Yshaped structures prevent the stress concentration at the junctions by transferring the forces to the skeleton for maintaining structural *** addition,the wrinkled and thick cell walls,together with the enhanced interlayer interactions,endow the aerogel with exceptional structural stability and *** a result,the MXene/reduced graphene oxide(RGO)composite aerogels exhibit superelasticity with reversible compressive strains of up to 95%.In addition,the electron bridging effect of the RGO sheets affords the aerogel to deliver excellent electromagnetic interference shielding performance,as high as 46.3 dB at 2.5 ***,the remarkable reshapeability of the aerogels allows for precise regulation of structure and performance(33.5-75.1 dB)by a simple wetting compression *** summary,this work offers helpful inspirations for developing lightweight and superelasticity aerogels for extensive applications.

关键词： lightweight superelasticity MXene aerogel electromagnetic interference shielding reshapeability

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FUBP3 mediates the amyloid-β-induced neuronal NLRP3 expression

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Neural Regeneration Research 2025年第7期20卷 2068-2083页

作者： Jing Yao yuan Li Xi Liu Wenping Liang yu Li Liyong Wu Zhe Wang Weihong song The National Clinical Research Center for Geriatric Disease Xuanwu HospitalCapital Medical UniversityBeijingChina Department of Neurology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan ProvinceChina Department of Neurosurgery Xuanwu HospitalCapital Medical UniversityBeijingChina Department of Pediatrics The Second Affiliated Hospital and Yuying Children’s HospitalKey Laboratory of Alzheimer’s Disease of Zhejiang ProvinceInstitute of AgingWenzhou Medical UniversityWenzhouZhejiang ProvinceChina Oujiang Laboratory(Zhejiang Laboratory for Regenerative Medicine Visionand Brain Health)WenzhouZhejiang ProvinceChina

Alzheimer's disease is characterized by deposition of amyloid-β,which forms extracellular neuritic plaques,and accumulation of hyperphosphorylated tau,which aggregates to form intraneuronal neurofibrillary tangles,in the *** NLRP3 inflammasome may play a role in the transition from amyloid-βdeposition to tau phosphorylation and *** NLRP3 is primarily found in brain microglia,and tau is predominantly located in neurons,it has been suggested that NLRP3 expressed by microglia indirectly triggers tau phosphorylation by upregulating the expression of pro-inflammatory ***,we found that neurons also express NLRP3 in vitro and in vivo,and that neuronal NLRP3 regulates tau *** biochemical methods,we mapped the minimal NLRP3 promoter and identified FUBP3 as a transcription factor regulating NLRP3 expression in *** primary neurons and the neuroblastoma cell line Neuro2A,FUBP3 is required for endogenous NLRP3 expression and tau phosphorylation only when amyloid-βis *** the brains of aged wild-type mice and a mouse model of Alzheimer's disease,FUBP3 expression was markedly increased in cortical *** analysis suggested that FUBP3 plays a role in neuron-mediated immune *** also found that FUBP3 trimmed the 5′end of DNA fragments that it bound,implying that FUBP3 functions in stress-induced *** findings suggest that neuronal NLRP3 may be more directly involved in the amyloid-β-to–phospho-tau transition than microglial NLRP3,and that amyloid-βfundamentally alters the regulatory mechanism of NLRP3 expression in *** that FUBP3 was only expressed at low levels in young wild-type mice and was strongly upregulated in the brains of aged mice and Alzheimer's disease mice,FUBP3 could be a safe therapeutic target for preventing Alzheimer's disease progression.

关键词： 5′end trimming Alzheimer's disease amyloid-beta amyloid-β-dependent transcription FUBP3 inflammasome inflammation neuron NLRP3 tau transcription factor

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Termination of the Emeishan flood volcanism and relationships to the end-Guadalupian mass extinction: SHRIMP dating of detrital zircons from the post-volcanic Xuanwei Formation, SW China

Termination of the Emeishan flood volcanism and relationship...

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International Conference on Continental Volcanism

作者： Bin He Yi-Gang Xu Xiao-Long Huang Zhen-yu Luo yu-Ruo Shi Qi-Jun Yang song-yue yu Key Laboratory of Isotope Geochronology and Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Science Guangzhou 510640 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

＜正＞Clastic rocks of the lowermost Xuanwei Formation （Group 1）, which directly overlie the Emeishan large igneous province （LIP）, have a geochemical affinity to the Emeishan felsic volcanic rocks, whereas the overlying sediments （Group 2） are compositionally more akin to mafic components of the Emeishan traps. This is the reverse of volcanic sequence of the Emeishan LIP where the felsic extrusives sit above predominantly mafic rocks. It is likely that

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排球运动员肩袖损伤后扣球发力顺序分析及受伤原因探讨

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北京体育大学学报 2017年第5期40卷 59-65页

作者：宋琳于跃王瑶崔立刚廖丽萍李瑜王安利北京体育大学北京100084 北京大学第三医院北京100191

目的:分析肩袖损伤运动员扣球时肌肉发力顺序,探讨肩袖损伤的原因,为运动员纠正错误动作、提高技术水平、预防肩袖损伤提供参考依据。方法:利用MEGAWIN6000表面肌电测试仪对肩袖损伤和肩部无伤的排球运动员疲劳前后的扣球动作进行测试,... 详细信息

目的:分析肩袖损伤运动员扣球时肌肉发力顺序,探讨肩袖损伤的原因,为运动员纠正错误动作、提高技术水平、预防肩袖损伤提供参考依据。方法:利用MEGAWIN6000表面肌电测试仪对肩袖损伤和肩部无伤的排球运动员疲劳前后的扣球动作进行测试,比较发力顺序的异同,分析肩袖损伤对动作控制的影响。结果:1)2组扣球发力各肌肉发力时刻占总动作时间百分比组间比较,疲劳前无伤组斜方肌中束和前锯肌明显大于有伤组,且差异具有非常显著性;2)损伤组组内比较,疲劳前斜方肌下束明显大于疲劳后,且差异具有显著性;3)损伤组仅在疲劳后主动上回旋肩胛骨再引臂,且没有内收预拉长;4)无伤组疲劳前后均会主动上回旋肩胛骨再引臂,且引臂前会内收上臂预拉长肌肉。结论:1)肩袖损伤运动员斜方肌下束激活异常,肩胛骨不稳定且主动运动滞后,肩峰下空间减小,容易引起撞击导致肩袖损伤;2)无伤运动员斜方肌中束和前锯肌激活明显早、贡献大,肩胛骨稳定且主动运动积极,肩峰下空间相对增大,可有效避免撞击损伤,内收预拉长动作有效提高扣球效果;3)肩袖损伤运动员与无伤运动员扣球发力顺序有明显差异,肩袖损伤运动员动作环节过度减少,幅度缩小,影响扣球质量且容易造成损伤。

关键词：排球扣球肩袖损伤发力顺序

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