Results 61 to 70 of about 2,692,639 (275)

Characterization of the Pore Environments in Covalent Organic Frameworks by Dynamic Spin Probe Exchange

open access: yesSmall, EarlyView.
Covalent organic frameworks (COFs) with alkyl or triethylene glycol pore linings are probed with water‐dissolved nitroxide radicals using CW EPR spectroscopy. Adsorption affinity, local polarity, and radical concentration inside the pores are quantified, revealing hydrogen bonding, dipolar, and π‐π interactions that govern guest binding, which ...
Sebastian Michler   +5 more
wiley   +1 more source

Alexander von Humboldts und Aimé Bonplands Pflanzen im Herbarium der Universität Halle-Wittenberg

open access: yesHiN - Alexander von Humboldt im Netz. Internationale Zeitschrift für Humboldt-Studien, 2019
Zusammenfassung Die Pflanzensammlung (Herbarium) der Universität Halle-Wittenberg enthält eine beträchtliche Anzahl von Pflanzenexemplaren, die von Alexander von Humboldt und Aimé Bonpland während ihrer amerikanischen Reise (1799–1804) gesammelt wurden.
Natalia Tkach, Uwe Braun, Martin Röser
doaj   +1 more source

Von der Beycht ob die der Bapst macht habe zu gebieten

open access: yes
Doctor Martinus Luther, Wittenberg, M.D.XXII, iarTitelbord. Init.Enth.: Luther, Martin: Der hundertundachtzehnte Psalm, nützlich zu beten ....
Luther, Martin
core   +1 more source

Dual‐Stimuli Responsive Poly(N‐acryloyl glycine) Microgels: Investigation of Network Structures and Application for Loading and Release of Biologics

open access: yesSmall, EarlyView.
Poly(N‐acryloyl glycine) hydrogel microparticles were fabricated via droplet‐based microfluidics and in situ photopolymerization. Rheology and MQ‐NMR revealed pronounced effects of pH and Ca2+ on network constraints and chain mobility, governing extensive swelling.
Yusuf Dursun   +5 more
wiley   +1 more source

Quantitative collagen and proteoglycan imaging reveal organic layering, gradients and regional texture in young mature dental cementum

open access: yesVIEW, EarlyView.
Cementum, the mineralized tissue covering all mammalian tooth roots, helps maintain tooth stability, but its internal organization is still poorly understood. In this study, we combine quantitative histologial methods to map the regional distributions of collagen fibers and proteoglycan‐rich matrix layers in porcine cementum.
Jie Zhen   +3 more
wiley   +1 more source

Morphology and Photoelectrochemical Properties of Sputtered WO3:Mo Anodes

open access: yesZeitschrift für anorganische und allgemeine Chemie, EarlyView.
WO3:Mo thin films for photoelectrochemical water splitting were deposited by sputtering from a W:Mo target. Substrate temperature, pressure, oxygen partial pressure, deposition rate, and film thickness were systematically varied. The results show that the substrate temperature is the dominant parameter governing both the film morphology and the ...
David Adner   +8 more
wiley   +1 more source

Inferential misconceptions and replication crisis

open access: yesEpidemiology, Biostatistics and Public Health, 2022
Misinterpretations of the p value and the introduction of bias through arbitrary analytical choices have been discussed in the literature for decades. Nonetheless, they seem to have persisted in empirical research, and criticisms of p value misuses have
Norbert Hirschauer   +5 more
doaj  

2D and 3D Nets by Self‐Assembly of Carbosilane Functionalized Polyphilic Liquid Crystals

open access: yesZeitschrift für anorganische und allgemeine Chemie, EarlyView.
In the shown compounds, the growing volume of the carbosilane side‐groups modifies the self‐assembly in liquid crystalline phases ranging from a square via a pentagonal to a hexagonal honeycomb and finally to a 3D (10,3)‐a double net. The structures are discussed in relation to inorganic solid‐state materials and the concept of “mesoatoms”.
Christian Anders   +3 more
wiley   +1 more source

Magnetic Structure of the High‐TN Antiferromagnet La0.5Sr3.5Fe3O7.5F2.6: A Temperature‐Dependent Mößbauer Spectroscopy and Neutron Diffraction Study

open access: yesZeitschrift für anorganische und allgemeine Chemie, EarlyView.
La0.5Sr3.5Fe3O7.5F2.6, a rare n = 3 Ruddlesden–Popper oxyfluoride, exhibits robust antiferromagnetism across a wide temperature range from 1.7 to 470 K. Temperature‐dependent neutron diffraction reveals an orthorhombic nuclear and a monoclinic magnetic structure, while Mößbauer spectroscopy shows persistent short‐range magnetic order up to 525 K.
Andy Bivour   +9 more
wiley   +1 more source

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