Results 81 to 90 of about 123,392 (306)

Natural Aging of Biomaterials in Ambient and Physiological Environments

open access: yesAdvanced NanoBiomed Research, EarlyView.
Biomaterials used in biomedical applications can change their physical properties over time, even under ambient and physiological conditions. This review highlights key studies on the natural aging of materials ranging from soft hydrogels to metals and ceramics, emphasizing how time‐dependent changes influence function and performance.
Shuyu Zhang, Anne E. Staples
wiley   +1 more source

Zweidimensionale Polymere als modulare metallfreie Festkörperkatalysatoren für die effiziente sono‐piezo‐photokatalytische Wasserstoffperoxidherstellung

open access: yesAngewandte Chemie, EarlyView.
Diese Studie demonstriert die hohe piezo‐photokatalytische Aktivität von festen molekulare Katalysatoren (Englisch: Solid Molecular Catalysts, SMCs) bei der Produktion von Wasserstoffperoxid aus Wasser und Sauerstoff. Durch den rationalen Entwurf der molekularen Motive (Diphenylpyridin oder Terpyridin) sowie der Rückgratfunktionalitäten (Methylgruppe ...
Sarah Brettschneider   +7 more
wiley   +1 more source

High field level crossing studies on spin dimers in the low dimensional quantum spin system Na$_2$T$_2$(C$_2$O$_4$)$_3$(H$_2$O)$_2$ with T=Ni,Co,Fe,Mn

open access: yes, 2007
In this paper we demonstrate the application of high magnetic fields to study the magnetic properties of low dimensional spin systems. We present a case study on the series of 2-leg spin-ladder compounds Na$_2$T$_2$(C$_2$O$_4$)$_3$(H$_2$O)$_2$ with T ...
A Abragam   +53 more
core   +1 more source

High Zn content of Randall's plaque: A μ-X-ray fluorescence investigation [PDF]

open access: yes, 2011
Kidney stone disease, or nephrolithiasis, is a common ailment. Among the different risk factors usually associated with nephrolithiasis are dehydration, metabolic defects (especially with regard to calcium and oxalate).
Albouy, Pierre-Antoine   +7 more
core   +2 more sources

Rationale Formulierung von Elektrolyten auf Ether‐Lacton‐Basis für sichere und nachhaltige nickelreiche Lithium‐Ionen‐Batterien

open access: yesAngewandte Chemie, EarlyView.
Diese Studie berichtet über die Formulierung neuartiger Elektrolyte zur Verbesserung von Sicherheit, Nachhaltigkeit und Kompatibilität mit nickelreichen Kathoden durch den Einsatz eines biobasierten Lösungsmittels (γ‐Valerolacton, GVL) sowie eines sicheren und stabilen Hilfslösungsmittels (Diethylenglycolbutylethylether, DEGBEE).
Juan Luis Gómez‐Urbano   +17 more
wiley   +1 more source

Two‐Dimensional Polymers as Modular Metal‐Free Solid‐State Catalysts for Efficient Sono‐Piezo‐Photocatalytic Hydrogen Peroxide Production

open access: yesAngewandte Chemie International Edition, EarlyView.
This study demonstrates the high piezo‐photocatalytic activity of solid molecular catalysts (SMCs) in the production of hydrogen peroxide from water and oxygen. Through the rational design of molecular motifs (diphenylpyridine or terpyridine) and backbone functionalities (methyl group, aliphatic amine antenna, or aromatic pyrrole unit), as well as ...
Sarah Brettschneider   +7 more
wiley   +1 more source

Method of preparing zinc orthotitanate pigment [PDF]

open access: yes, 1977
Zinc orthotitanate suitable for use as a pigment for spacecraft thermal control coatings is prepared by heating a slightly zinc deficient reaction mixture of precipitated oxalates of zinc and titanium.
Gates, D. W.   +3 more
core   +1 more source

Metal‐CO2 Batteries: By‐Product Challenges and Practical Pathways for Low CO2 Concentration Environment

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Metal‐CO2 batteries have recently emerged as an intriguing class of energy storage and conversion devices that simultaneously utilize and manage carbon dioxide. Originating from studies of CO2 contamination in metal‐air batteries, these systems have evolved into a distinct research direction, offering insights into CO2 electrochemistry and its
Sungmin Choi, Sooyeon Seok, Changmin Kim
wiley   +1 more source

Antiferromagnetic Dimers of Ni(II) in the S=1 Spin-Ladder Na_2Ni_2(C_2O_4)_3(H_2O)_2

open access: yes, 2006
We report the synthesis, crystal structure and magnetic properties of the S=1 2-leg spin-ladder compound Na_2Ni_2(C_2O_4)_3(H_2O)_2. The magnetic properties were examined by magnetic susceptibility and pulsed high field magnetization measurements.
A. Abragam   +21 more
core   +1 more source

Composition, distribution and supposed origin of mineral inclusions in sessile oak wood - consequences for microdensitometrical analysis [PDF]

open access: yes, 2007
SEM and light-microscopical observations, supported by chemical microanalysis with an EDXA system, revealed that light-saturated pixels observed in X-ray negatives of sessile oak (Quercus petraea Liebl.) wood were caused by inorganic deposits present ...
LE THIEC, D   +4 more
core   +5 more sources

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