Results 101 to 110 of about 140,930 (300)

Akurasi Wavelenght–dispersive X-ray Flourescence [PDF]

, 2004
Wavelenght-Dispersive X-Ray Flourescence Accuration. X-Fuorescence spectrometry is a method, which isincreasingly applied in the geochemical analysis.
Widyatmoko, H. (H)
core  

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, Volume 36, Issue 43, 29 May 2026.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

The Analytical Techniques Used for the Determination of Metallic Elements in Crude Oils and by-Products. A Review Les méthodes analytiques utilisées pour la détermination d'éléments métalliques dans les pétroles bruts et leurs dérivés. Synthèse bibliographique

Oil & Gas Science and Technology, 2006
A review is made of the most important analytical techniques for determining metals such as lead, iron, vanadium, nickel, copper, chromium, cobalt and sodium which are present in crude oils and by-products.
Rodriguez A. R., Gonzalez M. C.
doaj   +1 more source

Analysis of Trace Elements in Human Brain: Its Aim, Methods, and Concentration Levels

Frontiers in Chemistry, 2019
Trace elements play a crucial role in many biochemical processes, mainly as components of vitamins and enzymes. Although small amounts of metal ions have protective properties, excess metal levels result in oxidative injury, which is why metal ion ...
Cezary Grochowski, Cezary Grochowski, Eliza Blicharska, Paweł Krukow, Kamil Jonak, Kamil Jonak, Marcin Maciejewski, Dariusz Szczepanek, Katarzyna Jonak, Jolanta Flieger, Ryszard Maciejewski   +10 more
doaj   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, Volume 36, Issue 43, 29 May 2026.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

Sheet-like MoO₃ nanostructures with improved charge storage: Relationships among structural, optical, and electrochemical properties

Next Energy
The molybdenum trioxide (MoO₃) nanosheets were synthesized via thermal decomposition and thoroughly characterized for their structural, morphological, optical, and electrochemical properties.
A.P. Nagendra Babu, N. Pradeep, C.G. Renuka   +2 more
doaj   +1 more source

Minerals from Macedonia. XXVIII. A tribute to academician Gligor Jovanovski

Macedonian Journal of Chemistry and Chemical Engineering, 2015
It is both rewarding and difficult to write a review article about the contributions of acade­mician Gligor Jovanovski to the study of minerals from Macedonia.
Bojan Šoptrajanov
doaj   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, Volume 36, Issue 43, 29 May 2026.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Practices and Rules of 16th Century Genoese Gilding: Exploring Gold Leaf Thickness and Caratage through X-ray and Ion Beam Techniques

Heritage
This study investigates the practices and rules of Genoese gilding, drawing insights from a 16th-century manuscript containing regulations for gold leaf production.
Letizia Ciarlo, Massimo Chiari, Maria Clelia Galassi, Maurizio Ferretti, Elias Sideras-Haddad, Alessandro Zucchiatti, Elena Castagnotto   +6 more
doaj   +1 more source

Determination of trace quantities of thorium in uranyl nitrate by x-ray emission spectrometry [PDF]

, 1973
Trace quantities of thorium in uranium were separated by precipitating thorium fluoride from a 1.0M HF-1.0M NH/sub 4/F matrix using yttrium as an internal standard and lanthanum as a carrier. The thorium precipitate was collected on a filter and analyzed by x-ray emission spectrometry.
openaire   +2 more sources