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紫外光诱导氧化钛(110)表面氧空位迁移的成像研究

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Chinese Journal of Chemical Physics 2024年第1期37卷 29-34,I0117页

作者：赵祥云卫东金闲驰江凌马志博杨学明中国科学院大连化学物理研究所分子反应动力学国家重点实验室大连116023 中国科学院大学北京100049 盛达欧科(北京)分析仪器有限公司北京100044 苏州华杨科学仪器有限公司苏州215300 南方科技大学化学系深圳518055

本文报道了在氧化钛(110)表面上利用扫描隧道显微镜观察到的266 nm紫外激光照射下引发的氧空位迁移.由于紫外光诱导的氧空位迁移,表面上形成了氧空位对甚至氧空位三聚体.氧空位对缺陷有两种稳定的扫描隧道显微镜形态,在扫描过程中可以互... 详细信息

本文报道了在氧化钛(110)表面上利用扫描隧道显微镜观察到的266 nm紫外激光照射下引发的氧空位迁移.由于紫外光诱导的氧空位迁移,表面上形成了氧空位对甚至氧空位三聚体.氧空位对缺陷有两种稳定的扫描隧道显微镜形态,在扫描过程中可以互换.较长的光照时间(68分钟)可以形成以氧空位对为主要点缺陷的氧化钛(110)表面.本文丰富了关于紫外光照射下氧空位行为的理解,为未来涉及266 nm紫外光的金红石型氧化钛(110)还原表面的光催化研究氧空位扩散和氧空位寡聚体形成的现象提供了参考.

关键词：氧化钛扫描隧道显微镜紫外光照氧空位

经腹部与经阴道超声联合检查在多囊卵巢综合征中的诊断价值及影像指标分析

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影像研究与医学应用 2024年第9期8卷 22-24页

作者：卢伟荣马红伟郭婵婵李娜马玉爽东营市东营区人民医院超声科山东东营257000

目的:分析经腹部与经阴道超声联合检查在多囊卵巢综合征(PCOS)中的诊断价值及影像指标。方法:选取2021年5月—2023年6月东营市东营区人民医院接收的90例PCOS患者(设为PCOS组)以及同期到本院检查的80例健康受试者(设为对照组)作为研究对... 详细信息

目的:分析经腹部与经阴道超声联合检查在多囊卵巢综合征(PCOS)中的诊断价值及影像指标。方法:选取2021年5月—2023年6月东营市东营区人民医院接收的90例PCOS患者(设为PCOS组)以及同期到本院检查的80例健康受试者(设为对照组)作为研究对象。所有研究对象先后接受经腹部超声与经阴道超声检查,比较健康受试者与PCOS患者卵泡数量、卵巢间质面积(S)、卵巢体积(ov)、卵巢切面总面积(A)及S/A值等的超声特征;比较PCOS患者TAUS与TVS检查的卵巢面积增加、髓质回声异常、多囊性征象检出情况;比较TAUS与TVS检查诊断PCOS的准确率、误诊漏诊率。结果:PCOS组卵泡数量多于对照组,ov、S、A、S/A值大于对照组,差异有统计学意义(P0.05);TAUS与TVS联合检查检出PCOS患者髓质回声异常的占比高于TAUS与TVS单一检查,TAUS与TVS联合检查检出PCOS患者多囊性征象的占比高于TAUS单一检查,差异有统计学意义(P<0.05)。TAUS与TVS联合检查诊断PCOS的准确率高于TAUS与TVS单一检查,误诊漏诊率低于TAUS与TVS单一检查,差异有统计学意义(P<0.05)。结论:经腹部与经阴道超声联合检查能够更加全面地观察PCOS的病理特征,提高诊断价值。

关键词：经腹部超声经阴道超声多囊卵巢综合征诊断价值超声特征

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Deep-water cirripedes colonizing dead shells of the cephalopod Nautilus macromphalus from New Caledonian waters

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Integrative Zoology 2019年第6期14卷 561-575页

作者： John BUCKERIDGE TomášKOČÍ Ján SCHLÖGL Adam TOmaŠovÝCH martina KOČovÁVESELSKÁ Earth&Oceanic Systems Group RMIT UniversityMelbourneVictoriaAustralia Ivančická581 PragueCzech Republic and Palaeontological DepartmentNatural History MuseumNational MuseumPragueCzech Republic Department of Geology and Paleontology Comenius University in BratislavaBratislavaSlovakia Institute of Earth Sciences Slovak Academy of SciencesBratislavaSlovakia Department of Paleobiology and Paleoecology Institute of Geology of the Czech Academy of SciencesPragueCzech Republic Museums Victoria MelbourneVictoriaAustralia Faculty of Science Charles University in PraguePragueCzech Republic

Fossil cephalopods are frequently encrusted by epibionts;however,determining whether encrustation occurred prior to or post-mortem to the host,and whether the final environment of deposition corresponds to the habitat of encrustation is *** present paper describes cirripede epibionts,their calcareous bases and their attachment scars on 6 post-mortem shells of Nautilus macromphalus,collected from deep water off New Cale*** cirripedes have left both cemented calcareous bases of Hexelasma and scars associated with bioerosion and discoloration produced by verrucomorph *** cirripedes included a Metaverruca recta,with articulated opercular plates and organic tissue(on a shell that had been exposed on the sea floor for at least 150 years),and specimens of Hexelasma velutinum,one of which was partly attached to an internal surface of a *** disposition of verrucomorphs indicates that most Nautilus shells were colonized post-mortem rather than during a floating ***,as cirripedes are known to have colonized living Nautilus,some Hexelasma,preserved only as calcareous eroded bases,may represent specimens that settled on a living *** degree of bioerosion and discoloration induced by verrucomorph barnacles varies according to the surface preservation of Nautilus shells,with deeper and discolored traces preserved on old and degraded *** made by verrucomorphs described here are ellipsoidal and a new ichnotaxon,Anellusichnus ellipticus,is proposed to accommodate ***,verrucomorphs and other cirripede taxa with membranous bases that were attached to pristine shells may not leave any substantial scars,and,thus,will be difficult to detect in the fossil record.

关键词： Anellusichnus ellipticus isp.nov cirripedes epibionts Hexelasma velutinum Metaverruca recta

Enhanced hydrodeoxygenation of lignin-derived anisole to arenes catalyzed by Mn-doped Cu/Al_(2)O_(3)

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Green Energy & Environment 2023年第3期8卷 927-937页

作者： Xiaofei Wang Shixiang Feng Yue Wang Yujun Zhao Shouying Huang Shengping Wang Xinbin ma Key Laboratory for Green Chemical Technology of Ministry of Education Collaborative Innovation Centre of Chemical Science and EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou350207China

Lignin is a renewable carbon resource to produce arenes due to its abundant aromatic *** the liquid-phase hydrodeoxygenation(HDO)based on metallic catalysts,the preservation of aromatic rings in lignin or its derivatives remains a ***,we synthesized Mndoped Cu/Al_(2)O_(3) catalysts from layered double hydroxides(LDHs)for liquid-phase HDO of lignin-derived *** doping significantly enhanced the selective deoxygenation of anisole to arenes and inhibited the saturated hydrogenation on Cu/Al_(2)O_(3).With Mn doping increasing,the surface of Cu particles was modified with MnO_(x) along with enhanced generation of oxygen vacancies(ov).The evolution of active sites structure led to a controllable adsorption geometry of anisole,which was beneficial for increasing arenes *** a result,the arenes selectivity obtained on 4Cu/8Mn4AlO_(x) was increased to be more than 6 folds of that value on 4Cu/4Al_(2)O_(3) over the synergistic sites between metal Cu and ov generated on MnO_(x).

关键词： Anisole Hydrodeoxygenation Oxygen vacancy Arenes Metal oxide

High H_(2) selective performance of Ni-Fe-Ca/H-Al catalysts for steam reforming of biomass and plastic

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Journal of Energy Chemistry 2023年第5期80卷 215-227,I0006页

作者： Jin Deng Lingshuai Meng Duo ma Yujie Zhou Xianyang Wang Xiaodong Luo Shenfu Yuan School of Chemical Science and Engineering Yunnan Provincial Key Laboratory of Carbon Neutral and Green Low-Carbon TechnologyKey Laboratory of Medicinal Chemistry for Natural ResourceMinistry of EducationNational Center for Experimental Chemistry and Chemical Engineering Education DemonstrationYunnan Characteristic Plant Extraction LaboratorySchool of PharmacyYunnan University650091 KunmingYunnanChina

The development of a selective catalyst for the conversion of biomass and plastics into H2by steam reforming can combat the energy crisis and global *** this work,support Ni-Fe-Ca/H-Al bifunctional catalysts were prepared by loading Ni and Fe into pretreatment CaO/Al_(2)O_(3)(Ca/H-Al)carriers and showed high catalytic activity for the steam reforming of biomass and ***,the idea of bidirectional degradation was exploited to strengthen the pyrolysis of plastic with a high H/C and biomass with a high O/***,the products presented high H2selective(1302.10 m L/g)and low CO_(2)yield(120.23 m L/g)in 7Ni-5Fe-Ca/H-Al(2:4)catalyst compared with current ***,the abundant oxygen vacancies(ov)in the H-Al carrier exhibited an electron-deficient nature,providing active sites for anchoring Ni ***,Ni O interacted with Ca_(2)Fe_(2)O_(5)to produce more defective ovsites,which stabilized the NiO particles in the 7Ni-5Fe-Ca/H-Al(2:4)catalyst,and the interaction between the catalyst and the carrier was enhanced,leading to the reduction of weakly basic sites,this property promoted the strong adsorption of CO_(2)and H2O by the catalyst,contributing to the enhancement of efficient steam conversion and the promotion of conversion of by-products to ***,7Ni-5Fe-Ca/H-Al(2:4)catalysts maintained structural integrity after regeneration and exhibited excellent regenerability in H2selection and CO_(2)*** work provides a new idea for the study of efficient H2production from steam reforming of biomass and plastics.

关键词： Biomass and plastic Pyrolysis Steam reforming Ni-Fe-Ca/H-Al catalyst H_(2)selective

基于增强CT影像组学及基因组学模型预测卵巢浆液性囊腺癌预后

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中国医学影像技术 2024年第5期40卷 745-751页

作者：何迪梁赵建新潘妮妮施柳言熊恋秋马丽丽赵致平赵莲萍黄刚甘肃中医药大学第一临床医学院甘肃兰州730000 甘肃省武威肿瘤医院放射科甘肃武威733000 甘肃省人民医院放射科甘肃兰州730000

目的探讨基于治疗增强前动脉期CT构建的影像组学模型和影像-基因组学模型预测卵巢浆液性囊腺癌(OSC)患者预后的价值。方法回顾性收集2个中心及癌症影像档案馆(TCIA)共110例OSC增强动脉期CT图像,提取其影像组学特征,建立影像组学Cox回归... 详细信息

目的探讨基于治疗增强前动脉期CT构建的影像组学模型和影像-基因组学模型预测卵巢浆液性囊腺癌(OSC)患者预后的价值。方法回顾性收集2个中心及癌症影像档案馆(TCIA)共110例OSC增强动脉期CT图像,提取其影像组学特征,建立影像组学Cox回归预后预测模型;于癌症基因组图谱(TCGA)数据库获取399例OSC(TCGA-ov)转录组数据,以Pearson相关系数筛选与预测模型纳入特征相关的基因,进行关联基因富集分析。以Cox回归及蛋白质互作网络(PPI)对57例同时具有完整影像学及转录组学资料的OSC患者(TCGA-TCGA-ov)筛选连接度最高的预后枢纽基因,建立影像-基因组学模型。观察上述模型预测OSC预后的效能。结果基于5个OSC预后相关影像组学特征的建立影像组学模型在相应训练集和测试集的C指数(C-index)分别为0.782和0.735;纳入30个预后枢纽基因建立的影像-基因组学模型在相应训练集和测试集的C-index分别为0.673和0.659。以上述模型分层后,不同层次患者间生存率差异有统计学意义(P均<0.05)。与影像组学模型相关联的1135个mRNA基因涉及细胞黏附等生物学行为和PI3K-Akt、细胞外基质受体互作通路及1型糖尿病通路等信号通路。结论影像组学模型能较好地预测OSC预后;分析OSC mRNA生物信息学可为影像组学模型提供生物学可解释性。

关键词：卵巢囊腺癌,浆液预后影像基因组学体层摄影术,X线计算机

In-situ anion exchange based Bi_(2)S_(3)/ov-Bi_(2)MoO_(6)heterostructure for efficient ammonia production:A synchronized approach to strengthen NRR and OER reactions

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Journal of materials Science & Technology 2022年第15期110卷 152-160页

作者： Yuanyuan Zhang Li Guo Yingxian Wang Tianyu Wang Taoxia ma Zhuangzhuang Zhang Danjun Wang Bin Xu Feng Fu Shaanxi Key Laboratory of Chemical Reaction Engineering College of Chemistry&Chemical EngineeringYan’an UniversityYan’an 716000China Key Laboratory of Synthetic and Natural Functional Molecule Chemistry College of Chemistry&Materials ScienceNorthwest UniversityXi’an 710127China State Key Laboratory of Organic-Inorganic Composites Beijing Key Laboratory of Electrochemical Process and Technology for MaterialsBeijing University of Chemical TechnologyBeijing 100029China

Photocatalytic ammonia generation via nitrogen reduction reaction(NRR)is a green and prospective nitrogen fixation ***,NRR is often hampered by the high N_(2) adsorption/activation energies and is accompanied by a slow kinetics oxygen evolution reaction(OER).Herein,a robust Bi_(2)S_(3)/ovBi_(2)MoO_(6)S-scheme heterojunction is constructed using a simple in-situ anion exchange process,which enables oxygen vacancy(ovs)abundant Bi_(2)Mo O_(6) microspheres with surface deposited Bi_(2)S_(3).The asfabricated Bi_(2)S_(3)/ovBi_(2)MoO_(6) functioned as an effective photocatalyst to convert N_(2)-to-NH_(3) under mild *** photocatalytic NH_(3)/NH_(4)^(+) production rate reached 126μmol g_(cat)^(-1)under visible light for2.5 h with 2%of Bi_(2)S_(3)/ovBi_(2)MoO_(6)photocatalyst,which was 8-fold higher than pristine Bi_(2)MoO_(6).Furthermore,the as-fabricated Bi_(2)S_(3)/Bi_(2)MoO_(6)heterojunction exhibited good selectivity,high stability and *** excellent photocatalytic NRR performance was ascribed to the Bi_(2)S_(3)/Bi_(2)MoO_(6)heterojunction formed subsequent to the strong interaction between Bi_(2)S_(3)and Bi_(2)MoO_(6).The ovs facilitated the chemical adsorption process allowing activation of N_(2)molecule on the Bi_(2)S_(3)/Bi_(2)MoO_(6).Simultaneously,the S-scheme heterojunction prolonged the lifetime of photogenerated carriers,accelerated the electrons/holes spatial separation and accumulation on the Bi_(2)S_(3)(reduction)and Bi_(2)MoO_(6)side(oxidation),respectively,thus strengthening both OER and NRR *** simple in-situ anion exchange method offers a novel technique for strengthening OER and NRR half-reactions in Bi-based photocatalysts for effective photocatalytic ammonia generation.

关键词： Anion exchange method Bi_(2)S_(3)/Bi_(2)MoO_(6)s-scheme heterojunction Nitrogen activation Photocatalytic ammonia generation

Polymer-based synthetic oncolytic virus-like nanoparticles for cancer immunotherapy

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Science China Chemistry 2023年第12期66卷 3576-3586页

作者： Yuxi Gao Hanqin Zhao Jiayu Zhao Sheng ma Xinghui Si Liping Liu Ruirui Qiao Wantong Song Xuesi Chen State Key Laboratory of Supramolecular Structure and materials College of ChemistryJilin UniversityChangchun 130012China Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China Australian Institute of Bioengineering and Nanotechnology The University of QueenslandBrisbaneQueensland 4072Australia Jilin Biomedical Polymers Engineering Laboratory Changchun 130022China

Oncolytic viruses have emerged as new powerful therapeutic agents for cancer therapy by specifically lysing cancer cells while activating innate immune responses at the same ***,due to the thorny issues of safety concerns and host immune reaction,the clinical application of oncolytic viruses is still ***,we report a rationally designed oncolytic virus-like nanoparticles(ov-NPs)composed of stimulator of interferon genes(STING)-stimulating polymer loaded with therapeutic genes for cancer *** injection into tumor,the ov-NPs carrying OX40L plasmid could reprogram tumor cells to express OX40L immune checkpoint molecules and activate the STING pathway for cooperatively enhancing antitumor immunity,with a tumor suppression rate of 92.3%in B16F10 tumor model and 78.7%in MC38 tumor model without causing any *** ov-NPs could be further applied in carrying other plasmids(IL-12)and utilization in gene combination *** study should inspire designing synthetic ov-NPs as alternative strategies for extending oncolytic virus application in cancer immunotherapy.

关键词： oncolytic virus STING pathway gene delivery nanoparticles bioactive materials

Progress in oncolytic viruses modified with nanomaterials for intravenous application

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Cancer Biology & Medicine 2023年第11期20卷 830-855页

作者： Liting Chen Zhijun ma Chen Xu Youbang Xie Defang Ouyang Shuhui Song Xiao Zhao Funan Liu Department of Surgical Oncology and General Surgery Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal TumorsMinistry of EducationThe First Affiliated Hospital of China Medical UniversityShenyang 110001China Phase IClinical Trials Center Ministry of EducationThe First Affiliated Hospital of China Medical UniversityShenyang 110102China CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBejing 100190China Department of General Surgery Panjin People's HospitalPanjin 124221China Department of Hematology and Rheumatology Qinghai Provincial People's HospitalXining 810007China State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences(ICMS)University of MacaoMacao 999078China Center of materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBejing 100049China IGDB-NCNST Joint Research Center Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

In oncolytic virus(ov)therapy,a critical component of tumor immunotherapy,viruses selectively infect,replicate within,and eventually destroy tumor ***,this therapy activates immune responses and mobilizes immune cells,thereby eliminating residual or distant cancer ***,because of ovs’high immunogenicity and immune clearance during circulation,their clinical applications are currently limited to intratumoral injections,and their use is severely *** recent years,numerous studies have used nanomaterials to modify ovs to decrease virulence and increase safety for intravenous *** most commonly used nanomaterials for modifying ovs are liposomes,polymers,and albumin,because of their biosafety,practicability,and *** aim of this review is to summarize progress in the use of these nanomaterials in preclinical experiments to modify ovs and to discuss the challenges encountered from basic research to clinical application.

关键词： Oncolytic virus nanomaterials drug delivery tumor treatment intravenous application