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世界地震译丛 2009年第4期40卷 30-36页

作者： s．Atzori I．Hunstad M．Chini s．salvi C．Tolomei C．Bignami s．stramondo E．Trasatti A．Antonioli E．Boschi 李晶（译）不详陕西省地震局

根据环境卫星Envisat和COsMO-skyMed模型(为同震位错研究而首次设计的X波段反演干涉图)的DInsAR干涉图,确定了2009年4月6日阿奎拉MW=6.3级地震时激发的断层几何形状及运动特征。我们的主震最佳拟合解为一个约16km长、12km宽的正断层,存... 详细信息

根据环境卫星Envisat和COsMO-skyMed模型(为同震位错研究而首次设计的X波段反演干涉图)的DInsAR干涉图,确定了2009年4月6日阿奎拉MW=6.3级地震时激发的断层几何形状及运动特征。我们的主震最佳拟合解为一个约16km长、12km宽的正断层,存在小的右旋分量,向西南倾斜47°,最大滑动约90cm。虽然地震位错可能只有1km深,但是断层面的上倾投影与标绘的帕加尼卡—南德米特里奥断层的北段相符合,在现场观察到了该断层地表破裂的迹线。该断层在现有震源目录中的缺失表明,需要对具体的地表和地下进行进一步的地质和地球物理勘测,以便对局部规模的地震危险性做出更准确的评估。

关键词： DInsAR 断层反演地震位错同震位移意大利 Envisat 地表破裂 COsMO

Device-assisted enteroscopy: Are we ready to dismiss the spiral?

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World Journal of Gastroenterology 2024年第26期30卷 3185-3192页

作者： Alessandro Mussetto Elettra Merola Cesare Casadei Daniele salvi Fabiola Fornaroli silvia Cocca Margherita Trebbi Armando Gabbrielli Cristiano spada Andrea Michielan Department of Gastroenterology S Maria della Croci HospRavenna 48121Italy Department of Gastroenterology Unit G.B.Grassi Hospital(ASL Roma 3)Roma 00122Italy section of Digestive Endoscopy and Gastroenterology Fondazione PoliambulanzaBrescia 25124Italy Gastroenterology and Endoscopy Unit Department of Medicine and SurgeryUniversity of ParmaParma 43125Italy Gastroenterology and Endoscopy Unit Azienda Ospedaliero Universitaria Policlinico di ModenaModena 41121Italy Center for Medical sciences(CIsMed) University of TrentoTrento 38122Italy Gastroenterology and Digestive Endoscopy Unit Santa Chiara HospitalAzienda Provinciale per i Servizi SanitariTrento 38122Italy Digestive Endoscopy Unit Fondazione Policlinico Universitario A.Gemelli IRCSSRoma 00168Italy

Motorized spiral enteroscopy(MsE)is the latest advance in device-assisted *** events related to MsE were discussed in a recent large systematic review and meta-analysis and were directly compared with those of balloon enteroscopy in a case-matched study and a randomized controlled *** the real-life application of MsE,an unexpected safety issue emerged regarding esophageal injury and the technique has been withdrawn from the global market,despite encouraging results in terms of diagnostic and therapeutic *** conducted an Italian multicenter real-life prospective study,which was prematurely terminated after the withdrawal of MsE from the *** primary goals were the evaluation of MsE performance(both diagnostic and therapeutic)and its safety in routine endoscopic practice,particularly in the early phase of introduction in the endoscopic unit.A subanalysis,which involved patients who underwent MsE after unsuccessful balloon enteroscopy,demonstrated,for the first time,the promising performance of MsE as a rescue *** its remarkable performance in clinical practice and its potential role as a backup technique following a previously failed enteroscopy,it may be more appropriate to refine and enhance MsE in the future rather than completely abandoning it.

关键词： Motorized spiral enteroscopy Rescue enteroscopy Diagnostic yield Adverse events AGREE classification

1997年9月26日意大利Colfiorito地震:用sAR干涉和GPs模拟的同震地表位移

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世界地震译丛 2000年第5期31卷 28-31页

作者： s.stramondo M.Tesauro P.Briole E.sansosti s.salvi R.Lanari M.Anzidei P.Baldi G.Fornaro A.Avallone M.F.Buongiorno G.Franceschetti E.Boschi 乔子云宋胜合不详河北省地震局分析预报中心

1997年翁布里亚—马尔凯地震序列的最大事件是9月26日M_W5.7(00:33GMT)和M_W6.0(09:40GMT)两个地震,它们引起震中周围大面积的严重破坏和地裂缝。我们给出了一个ERs-sAR差分干涉图,图中在Colfiorito盆地内部及周围可见9个干涉条纹,这对... 详细信息

1997年翁布里亚—马尔凯地震序列的最大事件是9月26日M_W5.7(00:33GMT)和M_W6.0(09:40GMT)两个地震,它们引起震中周围大面积的严重破坏和地裂缝。我们给出了一个ERs-sAR差分干涉图,图中在Colfiorito盆地内部及周围可见9个干涉条纹,这对应于25cm的同震地表位移。GPs数据表明最大水平位移是14±1.8cm,最大沉降量为24±3cm。我们用这些测地数据和地震参数来估计断层面的几何特征和走滑分布。模拟的断层深度和最大滑动幅度对第一次地震分别是6.5km和47cm,对第二次地震分别是7km和72cm,这与由地震数据得到的很一致。

关键词：地震序列走滑 GPs 地裂缝地震数据断层面震中地表位移沉降量水平位移

钙感受器受体高水平表达的人类乳腺癌小鼠模型3T在体成像

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国际医学放射学杂志 2012年第3期 291-291页

作者： G.Baio M.Fabbi L.Emionite M.Cilli s.salvi P.Ghedin 杨治国 Department of Diagnostic Imaging ISTNational Cancer InstituteLargo Rosanna Benzi 1016132 GenoaItaly

目的临床3TMR评估证实锰能够显示人类乳腺癌鼠类模型的钙感受器受体(CasR)表达细胞。方法人类MDA-MB-231-Luc或MCF7-Luc的乳腺癌细胞可常位生长于NOD/sCID的小鼠体内形成最小为5mm的肿块。对静脉注射MnCl2前后的小鼠均采用T1WI序列进行... 详细信息

目的临床3TMR评估证实锰能够显示人类乳腺癌鼠类模型的钙感受器受体(CasR)表达细胞。方法人类MDA-MB-231-Luc或MCF7-Luc的乳腺癌细胞可常位生长于NOD/sCID的小鼠体内形成最小为5mm的肿块。对静脉注射MnCl2前后的小鼠均采用T1WI序列进行评估。为阻断

关键词： MRI 二氯化锰乳腺癌钙感受器在体小动物MRI

Effect of Eu3+,Bi3+,and Li+ doping on luminescent property of GdNbO4

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Journal of Rare Earths 2024年第1期42卷 66-75页

作者： s.W.Wi Y.s.Lee Department of Physics and Integrative Institute of Basic sciences Soongsil University

We investigated the emission properties of Eu3+-doped GdNbO4-based oxide phosphors,aiming at improving the Eu3+emission by codoping of Bi3+and Li+.Eu3+singly doped,Eu3+and Bi3+doubly doped,and Eu3+,Bi3+,and Li+triply doped GdNbO4were prepared using a high-temperature solid-state reaction *** red-orange emissions from Eu3+in the singly doped samples are significantly improved by the codoping of Bi3+,mainly due to the energy transfer from Bi3+to Eu3+.The additional codoping of Li+is found to increase the Eu3+emission *** improvement might be attributed to the increase in the photoluminescent quantum yield originating from larger grain sizes and better crystallinity.A detailed analysis of the X-ray diffraction pattern and the asymmetric ratio estimated from the photoluminescence spectra show that the local lattice environment around Eu3+in GdNbO4does not change significantly with the codoping of Bi3+and Li+.Our results indicate that Li+doping is a promising way to improve the emission properties of rare-earth ion-doped GdNbO4phosphors.

关键词： Eu 3+ GdNbO 4 Codoping of Li + Photoluminescence sensitizer Rare earths

First evidence for chiral wobbling of triaxial nuclei

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Nuclear science and Techniques 2024年第7期35卷 4-7页

作者： s.Frauendorf Department of Physics and Astronomy University of Notre DameNotre DameIN 46556USA

Chirality(Greek“handiness”)is a property of many com-plex *** molecules exist in two forms,one being the mirror image of the *** for our hands,it is impossible to make the images identical by a suitable *** two forms are called left-handed and *** have the same binding energy,because the electro-magnetic interaction,which holds the molecule together,does not change under a *** properties that are insensitive to the geometry are also the *** different geometry is the reason why the left-handed form turns the polarization plane of transmitted light in one direction by some angle while the right-handed form turns it in the oppo-site direction by the same ***,the geometrical differences between the two species may have other *** two species of the carvon molecule shown in Fig.1 taste quite differently.

关键词： turns Chiral mirror

Tribological behavior of lubricant-impregnated porous polyimide

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Friction 2024年第4期12卷 711-725页

作者： Jinbang LI Ningning ZHOU Janet s.s.WONG school of Mechanical Engineering and Mechanics Ningbo UniversityNingbo 315211China Beijing Key Laboratory of Long-life Technology of Precise Rotation and Transmission Mechanisms Beijing Institute of Control EngineeringBeijing 100029China Department of Mechanical Engineering Imperial College LondonLondon SW72AZUK

Porous materials impregnated with lubricants can be used in conditions where limited lubricant is *** this work,three porous polyimides(PPI)with different densities were ***(PAO)impregnated PPI(iPPI)discs were rubbed against steel and sapphire *** operando observations of the iPPI-sapphire contacts show that oil is released under an applied load,forming a meniscus around *** at the outlet is created at high sliding *** amount of released oil increases with increasing PPI *** moduli,E*,estimated based on the actual contact size show that trapped oil in iPPIs contributes to load *** higher speeds,tribological rehydration of the contact occurs in low density iPPI,with that E*rises with *** high density PPIs,high speeds give a constantly high E*which is limited by the viscoelastic properties of the PPI network and possibly the rate of oil *** of iPPI-steel contacts is governed by the mechanical properties of the PPI,the flow of the lubricant,and the roughness of the PPI *** low-and medium-density(highly porous,high roughness)PPIs,large amount of oil is released,and lubrication is mainly via lubricant restricted in the contact in the pores and possibly tribological *** high density(low porosity)PPI,with lower roughness,hydrodynamic lubrication is achieved which gives the lowest *** results show that polymeric porous materials for effective lubrication require the optimization of its surface roughness,stiffness,oil flow,and oil retentions.

关键词： polyimide porous material friction mechanism polymer limited lubrication

Enhancing fatigue performance of AZ31 magnesium alloy components fabricated by cold metal transfer-based wire arc directed energy deposition through LPB

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Journal of Magnesium and Alloys 2024年第4期12卷 1638-1662页

作者： shambhu Kumar Manjhi srikanth Bontha A.s.s.Balan Department of Mechanical Engineering National Institute of Technology KarnatakaSurathkalSrinivasanagarMangaloreKarnataka 575025India

Cold Metal Transfer-Based Wire Arc Directed Energy Deposition(CMT-WA-DED)presents a promising avenue for the rapid fabrication of components crucial to automotive,shipbuilding,and aerospace ***,the susceptibility to fatigue of CMT-WA-DED-produced AZ31 Mg alloy components has impeded their widespread adoption for critical load-bearing *** this study,a comprehensive investigation into the fatigue behaviour of WA-DED-fabricated AZ31 Mg alloy has been carried out and compared to commercially available wrought AZ31 *** findings indicate that the as-deposited parts exhibit a lower fatigue life than wrought Mg alloy,primarily due to poor surface finish,tensile residual stress,porosity,and coarse grain microstructure inherent in the WA-DED *** Plasticity Burnishing(LPB)treatment is applied to mitigate these issues,which induce significant plastic deformation on the *** treatment resulted in a remarkable improvement of fatigue life by 42%,accompanied by a reduction in surface roughness,grain refinement and enhancement of compressive residual stress ***,during cyclic deformation,WA-DED specimens exhibited higher plasticity and dislocation density compared to both wrought and WA-DED+LPB specimens.A higher fraction of Low Angle Grain Boundaries(LAGBs)in WA-DED specimens contributed to multiple crack initiation sites and convoluted crack paths,ultimately leading to premature *** contrast,wrought and WA-DED+LPB specimens displayed a higher percentage of High Angle Grain Boundaries(HAGBs),which hindered dislocation movement and resulted in fewer crack initiation sites and less complex crack paths,thereby extending fatigue *** findings underscore the effectiveness of LPB as a post-processing technique to enhance the fatigue performance of WA-DED-fabricated AZ31 Mg alloy *** study highlights the importance of LPB surface treatment on AZ31 Mg components produced by CMT-WA-DED to remove surface d

关键词： Wire arc additive manufacturing AZ31 Mg alloy Low plasticity burnishing Low cycle fatigue test strain amplitude

Ren-integrable and ren-symmetric integrable systems

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Communications in Theoretical Physics 2024年第3期76卷 62-69页

作者： s Y Lou school of Physical science and Technology Ningbo UniversityNingbo315211China

A new type of symmetry,ren-symmetry,describing anyon physics and corresponding topological physics,is ***-symmetry is a generalization of super-symmetry which is widely applied in super-symmetric physics such as super-symmetric quantum mechanics,super-symmetric gravity,super-symmetric string theory,super-symmetric integrable systems and so *** and Grassmann numbers are,in some sense,dual conceptions,and it turns out that these conceptions coincide for the ren situation,that is,a similar conception of ren-number(R-number)is devised for *** particular,some basic results of the R-number and ren-symmetry are exposed which allow one to derive,in principle,some new types of integrable systems including ren-integrable models and ren-symmetric integrable *** examples of ren-integrable KdV-type systems and ren-symmetric KdV equations are explicitly given.

关键词： symmetries integrable systems anyon physics extended supersymmetry ren-symmetry