Search results for "Methyl Ether"
showing 10 items of 40 documents
CCDC 201880: Experimental Crystal Structure Determination
2007
Related Article: S.Schwarz-Barac, H.Ritter, D.Schollmeyer|2003|Macromol.Rapid Commun.|24|325|doi:10.1002/marc.200391325
Die Synthese reiner Oligo[hydroxy-5-nitro1,3-phenylen)-methylen]e, Verbindungen mit mehreren ortho- bzw. para-Nitrophenolbausteinen im Molekül
1976
Zur Synthese der Oligo[(hydroxy-5-nitro-1,3-phenylen)methylen]e dienten chlormethylierte Nitrophenole sowie mono- und bischlormethylierte Bis- und Tris[(hydroxy-5-nitro-1,3-phenylen)methylen]e. Die Chlormethylierung erfolgte durch Umsetzung mit Chlormethylmethylather in Gegenwart von Zinkchlorid. Die Synthese der Oligomeren gelang mit guten Ausbeuten, wenn die chlormethylierten Verbindungen mit stark uberschussigem Nitrophenol und Zinkchlorid als Katalysator kondensiert wurden. Reaktionsbedingungen und unterschiedliche Reaktionsfahigkeiten werden mitgeteilt. Einige Verbindungen wurden in ihrer Struktur bestatigt, indem sie auf zwei voneinander unabhangigen Wegen dargestellt wurden. Damit wa…
Phylogeny and Mycotoxin Characterization of Alternaria Species Isolated from Wheat Grown in Tuscany, Italy
2018
Wheat, the main source of carbohydrates worldwide, can be attacked by a wide number of phytopathogenic fungi, included Alternaria species. Alternaria species commonly occur on wheat worldwide and produce several mycotoxins such as tenuazonic acid (TA), alternariol (AOH), alternariol-monomethyl ether (AME), and altenuene (ALT), provided of haemato-toxic, genotoxic, and mutagenic activities. The contamination by Alternaria species of wheat kernels, collected in Tuscany, Italy, from 2013 to 2016, was evaluated. Alternaria contamination was detected in 93 out of 100 field samples, with values ranging between 1 and 73% (mean of 18%). Selected strains were genetically characterized by multi-locus…
Heterogeneity at the Glass Transition: Translational and Rotational Self-Diffusion
1997
Self-diffusion coefficients, D, have been measured in the glass forming liquids salol, glycerol, phenolphthaleine dimethyl ether (PDE), cresolphthaleine dimethyl ether (CDE), and ααβ-trinaphthylbenzene (TNB) in the supercooled regime. The NMR static magnetic field gradient technique was applied where D >10-14 m2 s-1 can be attained. The results are similar to previous diffusion experiments where an enhancement of translational diffusion was found in comparison with rotational diffusion and shear viscosity. Various models of spatial heterogeneity are related to a phenomenological environmental fluctuation model in view of recent diffusion and relaxation data close to the glass transition.
CCDC 145654: Experimental Crystal Structure Determination
2000
Related Article: J.T.Kovalainen, E.Wegelius, J.A.M.Christiaans, J.Huuskonen, J.Gynther|2000|Acta Crystallogr.,Sect.C:Cryst.Struct.Commun.|56|e216|doi:10.1107/S0108270100005291
CCDC 201881: Experimental Crystal Structure Determination
2007
Related Article: S.Schwarz-Barac, H.Ritter, D.Schollmeyer|2003|Macromol.Rapid Commun.|24|325|doi:10.1002/marc.200391325
CCDC 201882: Experimental Crystal Structure Determination
2007
Related Article: S.Schwarz-Barac, H.Ritter, D.Schollmeyer|2003|Macromol.Rapid Commun.|24|325|doi:10.1002/marc.200391325
CCDC 747806: Experimental Crystal Structure Determination
2010
Related Article: J.Lloret, F.Estevan, P.Lahuerta, P.Hirva, J.Perez-Prieto, M.Sanau|2009|Chem.-Eur.J.|15|7706|doi:10.1002/chem.200900582
The Hip Fracture Surgery in Elderly Patients (HIPELD) study: protocol for a randomized, multicenter controlled trial evaluating the effect of xenon o…
2012
Trials 13, 180 (2012). doi:10.1186/1745-6215-13-180
Tungsten-titanium mixed oxide bronzes: Synthesis, characterization and catalytic behavior in methanol transformation
2019
[EN] Tungsten oxide bronze-based materials show extremely adaptive structural and compositional features that make them suitable for functional properties modulation. Herein we report the preparation of a series of Ti-containing tungsten oxide catalysts presenting a hexagonal tungsten bronze-type structure. The insertion of Ti4+ within the structure (likely in the octahedral framework of the hexagonal tungsten bronze) leads to an increase in the number of strong acid sites, and the disappearance of W5+ surface species found in the undoped tungsten oxide. With the aim of studying the acid-redox properties of the titled catalysts, the catalytic transformation of methanol has been carried out …