Results 71 to 80 of about 262,495 (378)

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Flexibility and Dynamicity Enhances and Controls Supramolecular Self‐Assembly of Zinc(II) Metallogels

Advanced Functional Materials, EarlyView.
Zinc(II) coordination complexes with tunable aryloxy‐imine ligands exhibit controllable supramolecular self‐assembly into hierarchical fibrous structures. Coordination‐driven stacking, not π–π interactions, enables gelation, dynamic assembly/disassembly, and enhanced nanomechanical properties.
Merlin R. Stühler, Hesam Makki, Dorothee Silbernagl, Mathias Dimde, Kai Ludwig, Bengt E. Tegner, Christopher Greve, Konstantin Rausch, Eva M. Herzig, Anna Köhler, Alex J. Plajer   +10 more
wiley   +1 more source

Metal and Complementary Molecular Bioimaging in Alzheimer’s Disease

Frontiers in Aging Neuroscience, 2014
Alzheimer’s disease (AD) is the leading cause of dementia in the elderly. AD represents a complex neurological disorder which is best understood as the consequence of a number of interconnected genetic and lifestyle variables, which culminate in multiple
Nady eBraidy, Anne ePoljak, Chris eMarjo, Helen eRutlidge, Anne eRich, Tharusha eJayasena, Nibaldo C. Inestrosa, Perminder eSachdev   +7 more
doaj   +1 more source

Anàlisis no destructives. L'ús de la fluorescència de raigs X en art i arqueologia [PDF]

, 2012
Non destructive analysis. The use of X-Ray Fluorescence in art and archaeology.Energy dispersive X-ray fluorescence spectrometry (EDXRF) is a non destructive analytical technique with excellent performance used to characterize objects of historic and ...
Clodoaldo Roldán García, José Ferrero Calabuig   +1 more
core   +1 more source

An accurate determination of the Avogadro constant by counting the atoms in a 28Si crystal

, 2010
The Avogadro constant links the atomic and the macroscopic properties of matter. Since the molar Planck constant is well known via the measurement of the Rydberg constant, it is also closely related to the Planck constant.
Andreas, B., Azuma, Y., Bartl, G., Becker, P., Bettin, H., Borys, M., Busch, I., Fuchs, P., Fujii, K., Fujimoto, H., Gray, M., Kessler, E., Krumrey, M., Kuetgens, U., Kuramoto, N., Mana, G., Manson, P., Massa, E., Mizushima, S., Nicolaus, A., Picard, A., Pramann, A., Rienitz, O., Schiel, D., Valkiers, S., Waseda, A.   +25 more
core   +1 more source

Mechanically Tunable Bone Scaffolds: In Vivo Hardening of 3D‐Printed Calcium Phosphate/Polycaprolactone Inks

Advanced Functional Materials, EarlyView.
A 3D bone scaffold with osteogenic properties and capable of hardening in vivo is developed. The scaffold is implanted in a ductile state, and a phase transformation of the ceramic induces the stiffening and strengthening of the scaffold in vivo. Abstract Calcium phosphate 3D printing has revolutionized customized bone grafting.
Miguel Mateu‐Sanz, Pablo Varela, Laura del‐Mazo‐Barbara, Irene Lodoso‐Torrecilla, Emilio Jiménez‐Piqué, Jordi Franch, Miguel Alaminos, Maria‐Pau Ginebra   +7 more
wiley   +1 more source

Quantification in X-Ray Fluorescence Spectrometry

, 2012
X-ray fluorescence spectrometry (XRF) is a versatile tool in many analytical problems. Major, minor and trace elements can be qualitatively and quantitatively determined in various kinds of samples: metals, alloys, glasses, cements, minerals, rocks, ores, polymers as well as environmental and biological materials.
Sitko, Rafał, Zawisza, Beata
openaire   +4 more sources

Review of a book by R. Klockenkaemper and A. von Bohlen “Total-reflection x-ray fluorescence analysis and related methods”, Second edition. John Wiley & Sons Inc., New Jersey, 2015, 519 pp. Isbn 978-1-118-46027-6 [PDF]

, 2016
Рентгенофлуоресцентный анализ с полным внешним отражением (РФА c ПВО) в настоящее время занимает важное место среди таких конкурентоспособных методов элементного спектрального анализа, как пламенная атомно-абсорбционная спектрометрия, электротермическая ...
Revenko, A. G., Ревенко, А. Г.
core   +1 more source

Modulating Electrochemical CO2 Reduction Pathways via Interfacial Electric Field

Advanced Functional Materials, EarlyView.
Engineering interfacial electric fields in Cu/ITO electrodes enables precise control of CO2 reduction pathways. Charge transfer from Cu to ITO generates positively charged Cu species that steer selectivity from ethylene toward methane. This work demonstrates how interfacial electric‐field modulation can direct reaction intermediates and transform ...
Mahdi Salehi, Zhengyuan Gao, Sai Phani Kumar Vangala, Amirhossein Farzi, Hamed Heidarpour, Morgan McKee, Nikolay Kornienko, Ali Seifitokaldani   +7 more
wiley   +1 more source

Improvement of 93mNb and 103mRh activity measurement methodology for reactor dosimetry

EPJ Web of Conferences, 2017
Reactor dosimetry is based on the analysis of the activity of irradiated dosimeters, such as 93mNb and 103mRh. The activity measurement of these dosimeters is conventionally performed by X-ray spectrometry, but the low-energy of emitted photons makes it ...
Riffaud J., Lépy M.-C., Domergue C., Philibert H., Destouches C., Thiollay N., Girard J.M.   +6 more
doaj   +1 more source