Zobrazeno 1 - 10
of 723
pro vyhledávání: '"Hellmut Eckert"'
Autor:
Doris Möncke, Hellmut Eckert
Publikováno v:
Journal of Non-Crystalline Solids: X, Vol 18, Iss , Pp 100158- (2023)
Externí odkaz:
https://doaj.org/article/68400b9e859e4bd7988040dc81acf082
Autor:
Maria J.F. Costa, Alexandre A.S. Gonçalves, Roberto Rinaldi, Henrik Bradtmüller, Hellmut Eckert, Eduardo B. Ferreira
Publikováno v:
Catalysis Communications, Vol 174, Iss , Pp 106577- (2023)
Metal dispersion is key for designing highly active and well-defined catalytic systems. Herein, to shed light on the effects of Nb dispersion on the conversion of fructose into HMF, highly porous silica glasses grafted with niobium oxide were prepare
Externí odkaz:
https://doaj.org/article/746b96455a4e48d7ae7b2159d059ea96
Publikováno v:
Journal of Magnetic Resonance Open, Vol 12, Iss , Pp 100067- (2022)
The static wideline and high-resolution magic angle spinning (MAS) 25Mg NMR lineshapes measured for isotopically enriched enstatite and diopside glasses indicate a wide distribution of the electric-field gradient (EFG) components at the 25Mg position
Externí odkaz:
https://doaj.org/article/db93aa43a3c0485d9990f166c3c5f8c9
Autor:
Alexander A. Malär, Nino Wili, Laura A. Völker, Maria I. Kozlova, Riccardo Cadalbert, Alexander Däpp, Marco E. Weber, Johannes Zehnder, Gunnar Jeschke, Hellmut Eckert, Anja Böckmann, Daniel Klose, Armen Y. Mulkidjanian, Beat H. Meier, Thomas Wiegand
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-13 (2021)
Here, the authors use solid-state NMR and EPR measurements to characterise the ATP hydrolysis transition state of the oligomeric bacterial DnaB helicase from Helicobacter pylori, which was trapped by using aluminium fluoride as a chemical mimic. They
Externí odkaz:
https://doaj.org/article/eb891282fac642d58cd86a545184715e
Autor:
Douglas F. Franco, Roger G. Fernandes, Jorlandio F. Felix, Valmor R. Mastelaro, Hellmut Eckert, Conrado R.M. Afonso, Younès Messaddeq, Sandra H. Messaddeq, Steeve Morency, Marcelo Nalin
Publikováno v:
Journal of Materials Research and Technology, Vol 11, Iss , Pp 312-327 (2021)
New magnetic glass compositions, based on system (100-x) (60GeO2 -25B2O3 –4Al2O3 -10Na2O–1PbO) – xTb4O7 were prepared by the melt-quenching technique. The materials were systematically characterized with respect to their structural (XRD, EXAFS,
Externí odkaz:
https://doaj.org/article/bf670be503e644d293e95d9000c610ae
Autor:
Doris Möncke, Hellmut Eckert
Publikováno v:
Journal of Non-Crystalline Solids: X, Vol 3, Iss , Pp - (2019)
Fluoride phosphate/fluorophosphate (FP) glasses form an intriguing material's basis for diverse applications in optics, photonics and energy storage. The optimization of the materials' properties with regard to the application envisioned demands an u
Externí odkaz:
https://doaj.org/article/5b6c0a09dc4c4802898d9e18b1a6f660
Autor:
Robert Knitsch, Melanie Brinkkötter, Thomas Wiegand, Gerald Kehr, Gerhard Erker, Michael Ryan Hansen, Hellmut Eckert
Publikováno v:
Molecules, Vol 25, Iss 6, p 1400 (2020)
Modern solid-state NMR techniques offer a wide range of opportunities for the structural characterization of frustrated Lewis pairs (FLPs), their aggregates, and the products of cooperative addition reactions at their two Lewis centers. This informat
Externí odkaz:
https://doaj.org/article/1e0357d5711c4074b2283d09735b71b7
Autor:
Rachel Prado Russo Delorenzo Nardi, Celso Eduardo Braz, Camila Pereira, Carolina Dakuzaku Freschi, Jefferson Luiz Ferrari, Andrea Simone Stucchi de Camargo, Hellmut Eckert, Fabia Castro Cassanjes, Gael Poirier
Publikováno v:
Materials Research, Vol 18, Iss 1, Pp 228-232 (2015)
The glass forming ability was investigated in the codoped Er3+/Yb3+ ternary system NaPO3-WO3-PbF2 with increasing amounts of PbF2. It has been found that glass samples can be obtained for PbF2 contents ranging from 0 mole% to 50 mole% for the codoped
Externí odkaz:
https://doaj.org/article/63b57b56ce2d4aaaa29811e93202bc68
Autor:
Steffen Eusterwiemann, Hellmut Eckert, Cristian A. Strassert, Nikos L. Doltsinis, Constantin G. Daniliuc, Carsten C Doerenkamp, Sina Klabunde, Linda Stegemann, David Matuschek, Armido Studer
Publikováno v:
CHIMIA, Vol 70, Iss 3 (2016)
Methods for the detection of reactive intermediates such as transient radicals are important in organic chemistry, polymer chemistry, biology or medicine. Along these lines we recently reported that 1,5-diphenyl-6-oxo verdazyl radicals can be used as
Externí odkaz:
https://doaj.org/article/f930e30999014737abb042c5345d9560
Autor:
Marcos de Oliveira, Robert Knitsch, Muhammad Sajid, Annika Stute, Lisa-Maria Elmer, Gerald Kehr, Gerhard Erker, Claudio J Magon, Gunnar Jeschke, Hellmut Eckert
Publikováno v:
PLoS ONE, Vol 11, Iss 6, p e0157944 (2016)
Q-band and X-band pulsed electron paramagnetic resonance spectroscopic methods (EPR) in the solid state were employed to refine the parameters characterizing the anisotropic interactions present in six nitroxide radicals prepared by N,N addition of N
Externí odkaz:
https://doaj.org/article/9c3eb72f71c2407f9255d7a42aa4f290