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81.
82.
H. Elion und A. Hilger 《Fresenius' Journal of Analytical Chemistry》1892,31(1):96-97
Ohne Zusammenfassung 相似文献
83.
G. Jeschke V. Chechik P. Ionita A. Godt H. Zimmermann J. Banham C. R. Timmel D. Hilger H. Jung 《Applied magnetic resonance》2006,30(3-4):473-498
Pulsed electron-electron double resonance techniques such as the four-pulse double electron-electron resonance experiment measure a dipolar evolution function of the sample. For a sample consisting of spin-carrying nanoobjects, this function is the product of a form factor, corresponding to the internal structure of the nanoobject, and a background factor, corresponding to the distribution of nanoobjects in space. The form factor contains information on the spin-to-spin distance distribution within the nanoobject and on the average number of spins per nanoobject, while the background factor depends on constraints, such as a confinement of the nanoobjects to a two-dimensional layer. Separation of the dipolar evolution function into these two contributions and extraction of the spin-to-spin distance distribution require numerically stable mathematical algorithms that can handle data for different classes of samples, e.g., spin-labelled biomacromolecules and synthetic materials. Furthermore, experimental imperfections such as the limited excitation bandwidth of microwave pulses need to be considered. The software package DeerAnalysis2006 provides access to a comprehensive set of tools for such data analysis within a common user interface. This interface allows for several tests of the reliability and precision of the extracted information. User-supplied models for the spin-to-spin distance distribution within a certain class of nanoobjects can be added to an existing library and be fitted with a universal algorithm. 相似文献
84.
85.
Hilger 《Fresenius' Journal of Analytical Chemistry》1873,12(1):342-343
Ohne Zusammenfassung 相似文献
86.
Jutta Pauli Robert Brehm Monika Spieles Werner A. Kaiser Ingrid Hilger Ute Resch-Genger 《Journal of fluorescence》2010,20(3):681-693
Aiming at the identification of new fluorescent reporters for targeted optical probes, we assessed the application-relevant
features of a novel asymmetric cyanine, DY-681, in comparison to the only clinically approved dye indocyanine green (ICG),
the golden imaging standard Cy5.5, and the asymmetric cyanine DY-676 successfully exploited by us for the design of different
contrast agents. This comparison included the analysis of the spectroscopic properties of the free fluorophores and their
thermal stability in aqueous solution as well as their cytotoxic potential. In addition, the absorption and emission features
of IgG-conjugated DY-681 were examined. The trimethine DY-681 exhibited spectral features closely resembling that of the pentamethine
Cy5.5. Its high thermal stability in phosphate buffer saline (PBS) solution in conjunction with its low cytotoxicity, reaching
similar values as determined for Cy5.5 and DY-676, renders this dye more attractive as ICG and, due to its improved fluorescence
quantum yield in PBS, also superior to DY-676. Although in PBS, Cy5.5 was still more fluorescent, the fluorescence quantum
yields (Φ
f) of DY-681 and Cy5.5 in PBS containing 5 mass-% bovine serum albumin (BSA) were comparable. Labeling experiments with DY-681
and the model antibody IgG revealed promisingly high Φ
f values of the bioconjugated dye. 相似文献
87.
Chekanov S Derrick M Magill S Musgrave B Nicholass D Repond J Yoshida R Mattingly MC Antonioli P Bari G Bellagamba L Boscherini D Bruni A Bruni G Cindolo F Corradi M Iacobucci G Margotti A Nania R Polini A Antonelli S Basile M Bindi M Cifarelli L Contin A De Pasquale S Sartorelli G Zichichi A Bartsch D Brock I Hartmann H Hilger E Jakob HP Jüngst M Nuncio-Quiroz AE Paul E Samson U Schönberg V Shehzadi R Wlasenko M Brook NH Heath GP Morris JD Capua M Fazio S Mastroberardino A Schioppa M Susinno G 《Physical review letters》2008,101(11):112003
Inclusive K_{S};{0}K_{S};{0} production in ep collisions at the DESY ep collider HERA was studied with the ZEUS detector using an integrated luminosity of 0.5 fb;{-1}. Enhancements in the mass spectrum were observed and are attributed to the production of f_{2}(1270)/a_{2};{0}(1320), f_{2};{'}(1525) and f_{0}(1710). Masses and widths were obtained using a fit which takes into account theoretical predictions based on SU(3) symmetry arguments, and are consistent with the Particle Data Group values. The f_{0}(1710) state, which has a mass consistent with a glueball candidate, was observed with a statistical significance of 5 standard deviations. However, if this state is the same as that seen in gammagamma-->K_{S};{0}K_{S};{0}, it is unlikely to be a pure glueball state. 相似文献
88.
P. Feller H. Herr E. Hilger V. Kadansky D. Menze Th. Miczaika U. Opara W.J. Schwille 《Physics letters. [Part B]》1974,49(2):197-200
The differential cross section has been measured for the reaction γ+p→πo + p at the Bonn 2.5 GeV electron synchrotron in the energy range from 0.55 to 2.2 GeV at a c.m.angle of 120 degrees. 相似文献
89.
Based on previous work, where it was shown that 4-urazoylbenzoic acid (U4A) groups, which are attached statistically to polybutadiene, form ordered supramolecular arrays in the unpolar polymer matrix, the present work describes the synthesis of a new molecular building block capable of self-assembling in the unpolar polymer matrix. 5-Urazoylisophthalic acid (U35A) groups attached to 1,4-polybutadiene chains cause the formation of a thermoplastic elastomer of improved properties. The clusters of functional groups show an endothermic transition. The melting temperature increases for low levels of modification from 130°C up to 190°C. The mechanical properties (stress–strain and dynamic mechanical) reveal excellent rubbery characteristics and a rubbery plateau which is considerably flatter than those of technical grade thermoplastic elastomers. The IR data indicate that the U35A groups are tetrafunctional with respect to supramolecular self-assembling. Based on detailed knowledge of the structure of the self-assembled domains in U4A groups, a model is developed which describes the observed material properties qualitatively. 相似文献
90.
R. Brandelik W. Braunschweig K. Gather F.J. Kirschfink K. Lübelsmeyer H.-U. Martyn G. Peise J. Rimkus H.G. Sander D. Schmitz D. Trines W. Wallraff H. Boerner H.M. Fischer H. Hartmann E. Hilger W. Hillen G. Zobernig 《Physics letters. [Part B]》1982,113(1):98-104
The inclusive production of π± mesons in e+e? annihilation has been measured at c.m. energies of 14, 22 and 34 GeV for pion momenta between 0.3 ans 10 GeV/c. The fraction of pions among the charged hadrons is above 90% at 0.4 GeV/c and decreases to about 50% at high momenta. The scaled cross sections () at 14, 22 and 34 GeV as well as the 5.2 GeV data from DASP have a rather similar x dependence. After integration over the x range from 0.2 to 0.6 the cross sections indicate a monotonic decrease with increasing centre-of-mass energy. 相似文献