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75 Aktuelle Fachpublikationen zum Thema Dichte

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para‐Xylene Ultra‐selective Zeolite MFI Membranes Fabricated from Nanosheet Monolayers at the Air–Water Interface

20.12.2017 | Donghun Kim, Mi Young Jeon, Benjamin L. Stottrup, Michael Tsapatsis, Angewandte Chemie, 2017

Hochselektive MFI‐Membranen können ausgehend von nanoskopischen Monoschichten hergestellt werden. M. Tsapatsis et al. beschreiben in ihrer Zuschrift (DOI: 10.1002/ange.201708835) eine neue Methode, mit welcher der Transfer einer einheitlichen dichten MFI‐Monoschicht von einer ...

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Environmental stress cracking of polyethylene high density (PE‐HD) induced by liquid media – Validation and verification of the full‐notch creep test (FNCT)

05.09.2017 | M. Schilling, M. Böhning, H. Oehler, I. Alig, U. Niebergall, Materialwissenschaft und Werkstofftechnik, 2017

Abstract The full‐notch creep test (FNCT) is widely used to characterize the slow crack growth (SCG) behavior of polyolefin materials in “inert” media as well as effects of environmental stress cracking (ESC) in which the medium has decisive influence on damage mechanism and time to failure. ...

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Bending strength dependence of load‐to‐annual ring direction

08.08.2017 | V. Rede, S. Essert, Z. Šokčević, Materialwissenschaft und Werkstofftechnik, 2017

Abstract The bending strength was studied for load‐to‐grain direction at angle of 90° and load‐to‐annual tree ring direction at angle of 45° of almost 700 years old subfossil elm wood from Sava riverbed. Elm wood is widely used because it is solid and hard regarding its weight. However, due to ...

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Characterization of Plasma Membrane Ceramides by Super‐Resolution Microscopy

05.04.2017 | Anne Burgert, Jan Schlegel, Jérôme Bécam, Sören Doose, Erhard Bieberich, Alexandra Schubert‐Unkmeir, Markus Sauer, Angewandte Chemie, 2017

Abstract The sphingolipid ceramide regulates cellular processes such as differentiation, proliferation, growth arrest, and apoptosis. Ceramide‐rich membrane areas promote structural changes within the plasma membrane that segregate membrane receptors and affect membrane curvature and vesicle ...

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Tailoring Renal Clearance and Tumor Targeting of Ultrasmall Metal Nanoparticles with Particle Density

24.11.2016 | Shaoheng Tang, Chuanqi Peng, Jing Xu, Bujie Du, Qingxiao Wang, Rodrigo D. Vinluan, Mengxiao Yu, Moon J. Kim, Jie Zheng, Angewandte Chemie, 2016

Abstract Identifying key factors that govern the in vivo behavior of nanomaterials is critical to the clinical translation of nanomedicines. Overshadowed by size‐, shape‐, and surface‐chemistry effects, the impact of the particle core density on clearance and tumor targeting of inorganic ...

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Metal fiber incorporation in carbon fiber reinforced polymers (CFRP) for improved electrical conductivity

11.11.2016 | B. Hannemann, S. Backe, S. Schmeer, F. Balle, U. P. Breuer, Materialwissenschaft und Werkstofftechnik, 2016

Compared to aluminum alloys, contemporary carbon fiber reinforced polymers (CFRP) structures offer poor electrical conductivity. Additional metal elements are necessary to fulfill important electrical functions like lightning strike protection, electromagnetical shielding, electrical bonding and ...

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High‐Density Liquid‐Crystalline Polymer Brushes Formed by Surface Segregation and Self‐Assembly

11.10.2016 | Koji Mukai, Mitsuo Hara, Shusaku Nagano, Takahiro Seki, Angewandte Chemie, 2016

Abstract High‐density polymer brushes on substrates exhibit unique properties and functions stemming from the extended conformations due to the surface constraint. To date, such chain organizations have been mostly attained by synthetic strategies of surface‐initiated living polymerization. We ...

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Hydrogen Peroxide Solvates of 2,4,6,8,10,12‐Hexanitro‐2,4,6,8,10,12‐hexaazaisowurtzitane

16.09.2016 | Jonathan C. Bennion, Nilanjana Chowdhury, Jeff W. Kampf, Adam J. Matzger, Angewandte Chemie, 2016

Abstract Two polymorphic hydrogen peroxide solvates of 2,4,6,8,10,12‐hexanitro‐2,4,6,8,10,12‐hexaazaisowurtzitane (CL‐20; wurtzitane is an alternative name to iceane) were obtained using hydrated α‐CL‐20 as a guide. These novel H2O2 solvates have high crystallographic densities (1.96 and ...

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Coke Formation in a Zeolite Crystal During the Methanol‐to‐Hydrocarbons Reaction as Studied with Atom Probe Tomography

03.08.2016 | Joel E. Schmidt, Jonathan D. Poplawsky, Baishakhi Mazumder, Özgün Attila, Donglong Fu, D. A. Matthijs de Winter, Flo ..., Angewandte Chemie, 2016

Abstract Understanding the formation of carbon deposits in zeolites is vital to developing new, superior materials for various applications, including oil and gas conversion processes. Herein, atom probe tomography (APT) has been used to spatially resolve the 3D compositional changes at the ...

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Pure Cubic‐Phase Hybrid Iodobismuthates AgBi2I7 for Thin‐Film Photovoltaics

29.06.2016 | Younghoon Kim, Zhenyu Yang, Ankit Jain, Oleksandr Voznyy, Gi‐Hwan Kim, Min Liu, Li Na Quan, F. Pelayo García de Arqu ..., Angewandte Chemie, 2016

Abstract Bismuth‐based hybrid perovskites are candidates for lead‐free and air‐stable photovoltaics, but poor surface morphologies and a high band‐gap energy have previously limited these hybrid perovskites. A new materials processing strategy to produce enhanced bismuth‐based thin‐film ...

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