Search

Metal–organic frameworks of general composition [M6(OH)4(O)4(PDC)6−x(Cl)2x(H2O)2x] with M = Zr, Ce, Hf; PDC2− = 2,5-pyridinedicarboxylate and 0 ≤x≤ 2 were obtained under reflux using formic, nitric or acetic acid as an additive. Rietveld refinements carried out using a fixed occupancy of the linker molecules according to the results of thermogravimetric measurements confirmed that the MOFs crystallize in the UiO-66 type structure and demonstrate that the structural models describe the data well. Further characterization was carried out by NMR spectroscopy, thermogravimetric analysis, Zr K-edge EXAFS- and Ce L3-edge XANES measurements. To highlight the influence of the additional nitrogen atom of the pyridine ring, luminescence and vapour sorption measurements were carried out. The hydrophilisation of the MOFs was shown by the adsorption of water at lower p/p0 (＜0.2) values compared to the corresponding BDC-MOFs (0.3). For water and methanol stability cycling adsorption experiments were carried out to evaluate the MOFs as potential adsorbents in heat transformation applications. [ABSTRACT FROM AUTHOR]

An all polyimide system made by plain and adhesive coated tapes has been adopted for the insulation of the LHC coils. In this analysis we put in evidence how different parameters in the curing cycles could affect the final bonding quality. Data for two different glue compositions are compared showing how the conjoint efforts of CERN and tape supplier Kaneka High-Tech Materials has helped to enlarge the window in which this material provides outstanding gluing, making easier to keep under control bonding quality throughout the mass production in a real industrial environment. [ABSTRACT FROM AUTHOR]

The state space of a quantum mechanical systemconsisting of more than one particle exhibits someunusual features giving rise to interesting phenomena,such as the Einstein–Rosen–Podolsky paradox.In order to get a feel for the structure of such a statespace, it is useful to study the spin component of apair of spin-1/2 particles, whose associated state spaceis clearly the simplest example occurring within the context of quantum mechanical systems ofmore than one particle. In a series of papers R.Horodecki et al. did just that and they found somebeautiful results, which are certainly of interest tothe mathematical physicist. In the present note, ina different context and using somewhat different methodsof proof, we rederive some of the results obtained byHorodecki. Furthermore, using these methods we are able to prove some additional resultswhich to our knowledge have never beenpublished. [ABSTRACT FROM AUTHOR]

Copyright of Virchows Archiv A Pathological Anatomy & Histology is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Deutsche Zeitschrift für Nervenheilkunde is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Klinische Wochenschrift is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Weirs and traps were used to monitor the movement of two strains of stocked brown trout, Salmo trutta L. Within 24 h of stocking, 15% (n = 13) of a Danish strain and 21% (n = 19) of a hybrid strain moved at least 100 m from their release site. In the following 5–6 days, no further movement was found for Danish fish, but hybrid fish continued to move, totaling 32% (n = 29) of the fish stocked. During this same period, 36 wild brown trout (≈ 3.5% of the population) were captured, moving over the weirs. Two weeks later, and one week after a flood, 70% (n = 59) of the Danish strain were recovered within their release sites and 89% (n = 76) were recovered during an electric fishing survey within the 3.5-km-long experimental area. In contrast, 43% (n = 31) of the hybrid strain were recaptured in their release sites and 49% (n = 45) within the experimental area. The total recapture of wild adult fish was only 16% (n = 41). The flooding event was insignificant in comparison with strain-specific behaviours in determining patterns of movement and residency.Austria, brown trout, floods, movement, stocking. [ABSTRACT FROM AUTHOR]