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中国化学会第30届学术年会-第三十一分会：胶体与界面化学

作者：刘冰 Arnout Imhof alfons van blaaderen Soft Condensed Matter Debye Institute Department of Physics Utrecht University 中国科学院化学研究所

在自然界中,气体、液体和固体之间的相态转变是非常普遍的。相似的相态转变也能用胶体分散体系观察到,尽管胶体的尺度远大于原子和分子体系。在胶体尺度研究相变机理,有原子和分子体系不可比拟的优势,如可在实空间方便的进行定量研究。... 详细信息

在自然界中,气体、液体和固体之间的相态转变是非常普遍的。相似的相态转变也能用胶体分散体系观察到,尽管胶体的尺度远大于原子和分子体系。在胶体尺度研究相变机理,有原子和分子体系不可比拟的优势,如可在实空间方便的进行定量研究。在胶体尺度得到的物理洞察力,同样也适用于原子和分子体系。棒状胶体粒子形成的液晶相是一个典型例子,在过去的几十年间已经被广泛的探索。然而,同样作为固体与流体之间介相的塑晶,却仍然没有在三维实空间被实验观察到。最近,我们实验发现,当赋予粒子长程斥力时,原本倾向于形成液晶相的棒状胶体也能形成塑晶相和塑性玻璃相。我们实验研究了这些塑性相的结构和转变动力学,并进一步显示了他们的旋转动力学和相态行为能用外部电场或受限有效地控制和调节,这将使这些塑性相在光子领域和光学显示领域有着重要的潜在应用。

关键词：胶体液晶塑晶相行为

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胶体塑晶

胶体塑晶

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2016年两岸三地高分子液晶态与超分子有序结构学术研讨会（暨第十四届全国高分子液晶态与超分子有序结构学术论文报告会）

作者：刘冰 Arnout Imhof alfons van blaaderen Alexander B?ker 中国科学院化学研究所 Soft Condensed Matter Debye Institute Department of Physics Utrecht University

在自然界中,物质间的相态转变(如气液固之间)是非常普遍的。相似的相态转变也能用胶体分散体系作为模型体系观察到[1],尽管胶体的尺度远大于原子和分子体系。在胶体尺度研究相变行为,有原子和分子体系不可比拟的优势,如可在实空间方便...

在自然界中,物质间的相态转变(如气液固之间)是非常普遍的。相似的相态转变也能用胶体分散体系作为模型体系观察到[1],尽管胶体的尺度远大于原子和分子体系。在胶体尺度研究相变行为,有原子和分子体系不可比拟的优势,如可在实空间方便的进行定量研究。在胶体尺度得到的物理洞察力,同样也可适用于原子和分子体系。棒状胶体粒子形成的液晶相是一个典型例子,在过去

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Deciphering fluid inclusions in high-grade rocks

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Geoscience Frontiers 2014年第5期5卷 683-695页

作者： alfons van den Kerkhof Andreas Kronz Klaus Simon Geowissenschaftliches Zentrum der Universitat Gottingen Goldschmidtstr.1-3 D 37073 GottingenGermany

The study of fluid inclusions in high-grade rocks is especially challenging as the host minerals have been normally subjected to deformation, recrystallization and fluid-rock interaction so that primary in- clusions, formed at the peak of metamorphism are rare. The larger part of the fluid inclusions found in metamorphic minerals is typically modified during uplift. These late processes may strongly disguise the characteristics of the ＂original＂ peak metamorphic fluid. A detailed microstructural analysis of the host minerals, notably quartz, is therefore indispensable for a proper interpretation of fluid inclusions. Cathodoluminescence （CL） techniques combined with trace element analysis of quartz （EPMA, LA- [CPMS） have shown to be very helpful in deciphering the rock-fluid evolution. Whereas high-grade metamorphic quartz may have relatively high contents of trace elements like Ti and A1, low- temperature re-equilibrated quartz typically shows reduced trace element concentrations. The result- ing microstructures in CL can be basically distinguished in diffusion patterns （along microfractures and grain boundaries）, and secondary quartz formed by dissolution-reprecipitation. Most of these textures are formed during retrograde fluid-controlled processes between ca. 220 and 500 ℃, i.e. the range of semi-brittle deformation （greenschist-facies） and can be correlated with the fluid inclusions. In this way modified and re-trapped fluids can be identified, even when there are no optical features observed under the microscope.

关键词： Fluid inclusionsGranuliteCharnockiteCathodoluminescenceLA-ICPMSQuartz

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Effects of undigested protein-rich ingredients on polarised small intestinal organoid monolayers

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Journal of Animal Science and Biotechnology 2020年第4期11卷 1026-1032页

作者： Soumya K.Kar Bart van der Hee Linda M.P.Loonen Nico Taverne Johanna J.Taverne-Thiele Dirkjan Schokker Mari A.Smits alfons J.M.Jansman Jerry M.Wells Host Microbe Interactomics Group Wageningen University&ResearchDe Elst 16708 WD WageningenThe Netherlands Laboratory of Microbiology Wageningen University&ResearchStippeneng 46708 WE WageningenThe Netherlands Wageningen Livestock Research Wageningen University&ResearchDe Elst 16708 WD WageningenThe Netherlands

Here, we describe the use of monolayers of intestinal epithelial cells derived from intestinal organoids and transcriptomics to investigate the direct effects of dietary protein sources on epithelial function. Mechanically dissociated 3 D organoids of mouse duodenum were used to generate a polarized epithelium containing all cell types found in the tissue of origin. The organoid-derived cell monolayers were exposed to 4%(w/v) of ‘undigested(non-hydrolysed)-soluble' fraction of protein sources used as feed ingredients [soybean meal(SBM) and casein], or alternative protein sources(spray dried plasma protein, and yellow meal worm), or controls for 6 h prior to RNA isolation and transcriptomics. All protein sources altered expression of unique biological processes in the epithelial cells. Exposure of intestinal organoids to SBM downregulated expression of retinol and retinoid metabolic processes as well as cholesterol and lipid biosynthetic pathways, consistent with the reported hypotriglyceridaemic effect of soy protein in vivo. These findings support the use of intestinal organoids as models to evaluate complex interactions between dietary ingredients and the intestinal epithelium and highlights some unique host effects of alternative protein sources in animal feed and potentially human food.

关键词： Alternative protein sources Casein Intestinal organoids Organoids Soybean meal Spray dried plasma protein Transcriptomics Yellow meal worm

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The Chinese Continental Drilling Program: Isotopic （O, Sr, Nd, Pb） and Fluid Inclusion Investigations on a Vertical Sequence of Ultrahigh-pressure Metamorphism

The Chinese Continental Drilling Program: Isotopic （O, Sr, ...

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2004年全国岩石学与地球动力学研讨会

作者： Jochen Hoefs Rolf L. Romer alfons van den Kerkhof Geowissenschaftliches Zentrum der Universitt Gttingen Goldschmidtstr. 1 D-37077 Gttingen Germany GeoForschungsZentrum Potsdam Telegrafenberg D-14473 Potsdam Germany Geowissenschaftliches Zentrum der Universitt Gttingen Goldschmidtstr. 1 D-37077 Gttingen Germany

＜正＞ Introduction Aiming to determine the nature and extent of fluid/rock interactions during UHP metamorphism, to reveal possible changes of fluid compositions in both vertical and horizontal sequences of subducted...

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POD GENERATOR,Development of Numerical Modeling Tools for Quantitative Assessment of the Performance of Non-destructive Inspection Techniques

POD GENERATOR,Development of Numerical Modeling Tools for Qu...

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17th World Conference on Non-Destructive Testing

作者： Arian MAST Arno VOLKER Joost BLOOM Uilke STELWAGEN alfons KROM Ali MOHAMOUD Gerard van GILS TNO Science and Industry Stieitjesweg 1 2628 CK DelftThe Netherlands

Risk based inspection strategies rely on detailed knowledge of the performance of inspection *** is well known that every inspection technique has limitations in terms of reliability and ***, these are influenced by many factors,e.g.,it depends on operator skills, inspection procedure,defect and object geometry,inspection *** objective of the"POD generator"project is to develop a numerical modeling approach to assess inspection effectiveness for a specific technique and situation. This approach enables a flexible and reliable quantitative assessment at acceptable costs. Besides the models to simulate various degradation mechanisms,numerical models have been developed and validated for accurately simulating the physics of inspection *** the human factor is taken into *** numerical models are then used to generate probability of detection (POD) *** this paper this approach will be illustrated for ultrasonic TOFD inspection. The POD generator will help asset owners to rationalize their inspection and maintenance strategy,*** inspection and maintenance costs whilst preserving safety and reliability of operation at the desired levels.

关键词： Nondestructive inspection Probability of detection POD Time-of flight-diffraction TOFD Pulse-echo PE Guided waves GW Magnetic flux leakage MFL Human factor

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