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CaTiO_3－钙钛矿的晶体结构相变、高温流变及其下地幔地球动力学意义

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地球物理学报 1995年第6期38卷 718-728页

作者：王子潮唐户俊一郎 geoforschungs zentrum potsdam 德国 University of Minnesota 美国

利用高精度的ＭＴＳ材料实验系统，在１４７３－１６７３Ｋ的温度区间和可控热力学环境条件下，对［１００］ｐｃ和［１１０］ｐｃ两个方位的ＣａＴｉＯ＿３－钙钛矿单晶体进行了高温蠕变试验，着重观测了晶体结构相变和高温流变的相关... 详细信息

利用高精度的ＭＴＳ材料实验系统，在１４７３－１６７３Ｋ的温度区间和可控热力学环境条件下，对［１００］ｐｃ和［１１０］ｐｃ两个方位的ＣａＴｉＯ＿３－钙钛矿单晶体进行了高温蠕变试验，着重观测了晶体结构相变和高温流变的相关性．研究表明，钙钛矿的晶体结构相变对其高温流变性质有明显影响，斜方晶系钙钛矿蠕变强度大大高于四方和立方晶系钙钛矿，后两者具有很强的高温塑性各向异性．在分析相变过程晶体结构变化特征和观测到的高温流变数据基础上，认为钙钛矿晶体结构相变中发生的位错结构的变化是导致其高温流变性变化的主要物理机制．

关键词：钛酸钙钙矿钛矿晶体结构温度地球动力学

Co-operation between *** Tungsheng and Myself

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Focused Ion Beam(FIB)-TEM: Exploring Earth Materials with Ions and Electrons

作者： Jrg F.W.Negendank geoforschungs zentrum

In 1991,as Vice President and geologist of the University of Trier,Germany I had the obligation to visit partner universities in Japan and China to strengthen the contacts for our students being educated in both countries in both languages and *** from these commitments I participated in the INQUA congress at Beijing congress center and met *** Tungsheng personally for the first time.

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Acta Geologica Sinica(English Edition) 2015年第A2期89卷 97-97页

作者： Richard WIRTH Helmholtz-zentrum potsdam Deutsches GeoForschungs Zentrum GFZ

Focused ion beam techniques have been applied in Geosciences since 10-15 years. The basic principal of FIB is using accelerated Ga-ions to sputter material from a target. At the beginning of FIB application in Geosciences it was utilized as a tool to prepare site-specific samples for transmissionelectron microscopy （TEM）.

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Characterization and modeling of the temperature-dependent thermal conductivity in sintered porous silicon-aluminum nanomaterials

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Nano Research 2022年第6期15卷 5663-5670页

作者： Danny Kojda Tommy Hofmann Natalia Gostkowska-Lekner Klaus Habicht Department Dynamics and Transport in Quantum Materials Helmholtz-Zentrum Berlin für Materialien und Energie GmbHBerlin D-14109Germany Institute of Physics and Astronomy University of PotsdamPotsdam D-14476Germany

Nanostructured silicon and silicon-aluminum compounds are synthesized by a novel synthesis strategy based on spark plasma sintering(SPS)of silicon nanopowder,mesoporous silicon(pSi),and aluminum *** interplay of metal-assisted crystallization and inherent porosity is exploited to largely suppress thermal *** and temperaturedependent thermal conductivity studies allow us to elucidate the impact of porosity and nanostructure on the macroscopic heat *** electron microscopy along with quantitative image analysis is applied to characterize the sample morphology in terms of domain size and interpore distance *** demonstrate that nanostructured domains and high porosity can be maintained in densified mesoporous silicon *** contrast,strong grain growth is observed for sintered nanopowders under similar sintering *** observe that aluminum agglomerations induce local grain growth,while aluminum diffusion is observed in porous silicon and dispersed nanoparticles.A detailed analysis of the measured thermal conductivity between 300 and 773 K allows us to distinguish the effect of reduced thermal conductivity caused by porosity from the reduction induced by phonon scattering at nanosized *** a modified Landauer/Lundstrom approach the relative thermal conductivity and the scattering length are *** relative thermal conductivity confirms the applicability of Kirkpatrick’s effective medium *** extracted scattering lengths are in excellent agreement with the harmonic mean of log-normal distributed domain sizes and the interpore distances combined by Matthiessen’s rule.

关键词： thermal conductivity mesoporous silicon porosity spark plasma sintering nanoscale modeling

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利用SRD方法监测区域性地壳形变

中国科学（A辑） 1994年第7期24卷 747-753页

作者：朱文耀冯初刚滕展明朱元兰 Ch.Reigber S.Y.Zhu 中国科学院上海天文台上海200030 geoforschungs zentrum potsdam

介绍了一种同步测距差(SRD)的半动力、半几何的处理方法,以取代通常的卫星动力法,利用此方法,根据1985—1990年Lageos卫星的SLR资料,测定了位于著名的San Andreas断层两侧的Quincy和Mnpeak的SLR站间基线矢量的变化率,其结果为 dB_x=15.0... 详细信息

介绍了一种同步测距差(SRD)的半动力、半几何的处理方法,以取代通常的卫星动力法,利用此方法,根据1985—1990年Lageos卫星的SLR资料,测定了位于著名的San Andreas断层两侧的Quincy和Mnpeak的SLR站间基线矢量的变化率,其结果为 dB_x=15.0±3.4(mm/a), dB_y=20.2±2.5(mm/a), dB_y=15.2±2.6(mm/a), dB=26.9±2.1(mm/a)。

关键词： SLR 地壳运动同步测距差地壳形变

Self-assembly of Human Galectin-1 via dual supramolecular interactions and its inhibition of T-cell agglutination and apoptosis

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Nano Research 2018年第10期11卷 5566-5572页

作者： Wenjing Qi Yufei Zhang Zdravko Kochovski Jue Wang Yan Lu Guosong Chen Ming Jiang The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan University Shanghai 200438 China Soft Matter and Functional Materials Helmholtz-Zentrum Berlin for Materialien und Energie Berlin 14109 Germany Institute of Chemistry University of Potsdam 14476 Potsdam Germany

Recently, we proposed a new strategy to construct artificial plant protein assemblies, which were induced by adding a small molecule, based on dual supramolecular interactions. In this paper, we further explored this method by employing Human Galectin-1 （Gal-1） as a building block to form self-assembled microribbons. Two non-covalent interactions, including lactose-lectin binding and dimerization of Rhodamine B （RhB）, induced by the small molecule ligand addition, were involved in the crosslinking of the animal protein, resulting in the formation of assemblies. By using transmission electron microscopy （TEM）, cryo-electron microscopy （cryo-EM）, and three-dimensional （3D） tomographic analysis, we arrived at a possible mechanistic model for the microribbon formation. Furthermore, the morphology of protein assemblies could be fine-tuned by varying the incubation time, the protein/ligand ratio, and the chemical structures of ligands. Interestingly, the formation of protein microribbons successfully inhibited Gal-1 induced T-cell agglutination and apoptosis. This is because the multivalent and dynamic interactions in protein assemblies compete with the binding between Gal-1 and the glycans on cell surfaces, which suppresses the function of Gal-1 in promotion of tumor progression and metastasis.

关键词： protein self-assembly supramolecularinteractions galectin cell agglutination

Jacques Touret(1936-2024)

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Geoscience Frontiers 2024年第4期15卷 518-520页

作者： Maria Luce Frezzotti Daniel Harlov Jan Marten Huizenga Alfons van den Kerkhof Universitàdegli Studi di Milano-Bicocca MilanoItaly Geo Forschungs zentrum potsdam TelegrafenbergPotsdamGermany Norwegian University of Life Sciences ÅsNorway Georg-August Universität Göttingen GöttingenGermany

Jacques Touret(Fig.1)passed away on 11 March 2024 in Paris at the age of 88 after a long *** is survived by his wife Lydie Touret,four children,and 14 *** was a pioneer in the field of fluid inclusions and its applications in high-grade metamorphic *** his retrospective paper in Geoscience Frontiers(Touret,2014),Jacques described himself as someone who dedicated"...a great part of my scientifiic life to the study of minute bubbles in rocks issued from the most extreme depths of our mother Earth".He will be remembered as a very amiable person and his infectious enthusiasm for fluid inclusions.

关键词： someone remember mother

Combined approach of poroelastic and earthquake nucleation applied to the reservoir-induced seismic activity in the Val d’Agri area,Italy

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Journal of Rock Mechanics and Geotechnical Engineering 2020年第4期12卷 802-810页

作者： Antonio P.Rinaldi Luigi Improta Sebastian Hainzl Flaminia Catalli Luca Urpi Stefan Wiemer Swiss Seismological Service ETHZurichSwitzerland Istituto Nazionale di Geofisica e Vulcanologia INGVRomeItaly Deutsches GeoForshung e zentrum GFZPotsdamGermany RatePAY GmbH BerlinGermany

In this work,an approach is developed to study the seismicity associated with the impoundment and level changes of a water reservoir(reservoir induced seismicity e RIS).The proposed methodology features a combination of a semi-analytical poroelastic model with an earthquake nucleation approach based on rate-and-state frictional *** combined approach was applied to the case of the Pertusillo Lake,located in the Val d’Agri area(Italy),whose large seasonal water level changes are believed to induce protracted micro-seismicity(local magnitude ML<3).Results show that the lake impoundment in 1962 could have produced up to 0.5 bar(1 bar=100 kPa)changes in Coulomb failure stress(DCFS),while the seasonal water level variation is responsible for variation up to 0.05 *** results of the seismicity rates in 20012014 show that the observed earthquakes are well correlated with the modeled ***,the reason that the seismicity is only observed at southwest of the Pertusillo Lake is provided,which is likely attributed to different rock lithologies and depletion caused by significant hydrocarbon exploitation in the northeastern sector of the lake.

关键词： Reservoir induced seismicity(RIS) Poroelasticity Rate-and-state frictional law Pertusillo lake

62 kaBP以来湖光岩玛珥湖沉积物有机碳同位素记录及古气候环境意义

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海洋地质与第四纪地质 2005年第2期25卷 115-126页

作者：刘强顾兆炎刘嘉麒游海涛吕厚远储国强祁向雷 Jorg F W Negendank Jens Mingram Georg Schettler 中国科学院地质与地球物理研究所吉林大学地球科学学院长春130061 地质出版社 geoforschungs zentrum potsdam Potsdam14473Germany

湖光岩玛珥湖HUG B孔岩心记录了62kaBP以来的古气候、古环境变化信息。全岩有机碳同位素组成(δ13CTOC)分析表明,62kaBP以来δ13CTOC值变化比较明显,其变化范围为-28.5‰～-15.5‰。结合孢粉和有机地球化学指标进行综合分析,湖光岩玛珥... 详细信息

湖光岩玛珥湖HUG B孔岩心记录了62kaBP以来的古气候、古环境变化信息。全岩有机碳同位素组成(δ13CTOC)分析表明,62kaBP以来δ13CTOC值变化比较明显,其变化范围为-28.5‰～-15.5‰。结合孢粉和有机地球化学指标进行综合分析,湖光岩玛珥湖δ13CTOC变化曲线可划分为6个演化阶段:62～58和48～40.5kaBP两个时段的δ13CTOC值偏负,沉积物中有机质主要来源于热带—亚热带地区的陆生C3森林植被,反映了温暖潮湿的气候环境;58～48和40.5～17.2kaBP期间δ13CTOC值明显偏正,沉积物中有机质主要源自C4草本植物,反映了湖光岩地区有效降水量减少、干旱程度增加导致湖光岩玛珥湖湖面下降,大量C4草本植物生长在暴露的湖滨岸;17.2～4kaBP时段内δ13CTOC值尽管存在更加频繁的波动,但总体呈现逐渐偏负的趋势,反映了暖湿和冷干气候多次交替但总体上逐渐变暖、变湿的气候环境;4kaBP以来δ13CTOC值存在逐渐偏正的趋势,虽然不排除人类活动的影响,但很可能反映了干旱程度的再次增加。综合分析表明,有效降水量(降水量-蒸发量)是控制湖光岩玛珥湖地区C3/C4植物相对生物量变化的主导因素。湖光岩玛珥湖有机碳同位素的研究结果支持区域气候环境而不是大气CO2浓度变化是末期冰期以来热带低纬度地区C3/C4植被相对生物量变化的主要原因。

关键词：湖光岩玛珥湖碳同位素记录沉积物古气候环境意义 δ^13C TOC值有效降水量碳同位素组成地球化学指标气候环境有机碳同位素干旱程度亚热带地区低纬度地区大气CO2 变化信息综合分析演化阶段变化曲线森林植被