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131.
132.
Paul Simon Dirk Zahn Hannes Lichte Rüdiger Kniep 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2006,118(12):1945-1949
133.
With the aim of obtaining a general local formulation for anisotropic growth in soft biological tissues, a model based on the multiplicative decomposition of the growth tensor is formulated. The two parts of the growth tensor are associated with the main anisotropy directions. Together with an anisotropic driving force, the model enables an effective stress reduction by including growth-induced residual stresses, which is demonstrated in a numerical example of an idealized arterial segment. (© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
134.
Matthias Golecki Jochen Lach Alexander Jeremies Frank Lungwitz Dr. Michael Fronk Prof. Dr. Georgeta Salvan Prof. Dr. Dietrich R. T. Zahn Jaena Park Dr. Yulia Krupskaya Dr. Vladislav Kataev Prof. Dr. Rüdiger Klingeler Prof. Dr. Bernd Büchner Benjamin Mahns Prof. Dr. Martin Knupfer Dr. Pablo F. Siles Dr. Daniel Grimm Prof. Dr. Oliver G. Schmidt Andreas Reis Prof. Dr. Werner R. Thiel Daniel Breite Prof. Dr. Bernd Abel Prof. Dr. Berthold Kersting 《Chemistry (Weinheim an der Bergstrasse, Germany)》2013,19(24):7787-7801
A new strategy for the fixation of redox‐active dinickel(II) complexes with high‐spin ground states to gold surfaces was developed. The dinickel(II) complex [Ni2L(Cl)]ClO4 ( 1 ClO4), in which L2? represents a 24‐membered macrocyclic hexaaza‐dithiophenolate ligand, reacts with ambidentate 4‐(diphenylphosphino)benzoate (dppba) to form the carboxylato‐bridged complex [Ni2L(dppba)]+, which can be isolated as an air‐stable perchlorate [Ni2L(dppba)]ClO4 ( 2 ClO4) or tetraphenylborate [Ni2L(dppba)]BPh4 ( 2 BPh4) salt. The auration of 2 ClO4 was probed on a molecular level, by reaction with AuCl, which leads to the monoaurated NiII2AuI complex [NiII2L(dppba)AuICl]ClO4 ( 3 ClO4). Metathesis of 3 ClO4 with NaBPh4 produces [NiII2L(dppba)AuIPh]BPh4 ( 4 BPh4), in which the Cl? is replaced by a Ph? group. The complexes were fully characterized by ESI mass spectrometry, IR and UV/Vis spectroscopy, X‐ray crystallography ( 2 BPh4 and 4 BPh4), cyclic voltammetry, SQUID magnetometry and HF‐ESR spectroscopy. Temperature‐dependent magnetic susceptibility measurements reveal a ferromagnetic coupling J=+15.9 and +17.9 cm?1 between the two NiII ions in 2 ClO4 and 4 BPh4 (H=?2 JS1S2). HF‐ESR measurements yield a negative axial magnetic anisotropy (D<0), which implies a bistable (easy axis) magnetic ground state. The binding of the [Ni2L(dppba)]ClO4 complex to gold was ascertained by four complementary surface analytical methods: contact angle measurements, atomic‐force microscopy, X‐ray photoelectron spectroscopy, and spectroscopic ellipsometry. The results indicate that the complexes are attached to the Au surface through coordinative Au? P bonds in a monolayer. 相似文献
135.
Crystal Blake Kimberly M Fabick Kenneth DR Setchell Trent D Lund Edwin D Lephart 《BMC neuroscience》2011,12(1):28
Background
Soy-derived isoflavones potentially protect against obesity and depression. In five different studies we examined the influence of soy-containing diets or equol injections on depression, serotonin levels, body weight gain (BW) and white adipose tissue (WAT) deposition in female Long-Evans rats at various stages of life [rats were intact, ovariectomized or experienced natural ovarian failure (NOF)]. 相似文献136.
A. G. Milekhin N. A. Yeryukov L. L. Sveshnikova T. A. Duda E. I. Zenkevich S. S. Kosolobov A. V. Latyshev C. Himcinski N. V. Surovtsev S. V. Adichtchev Zhe Chuan Feng Chia Cheng Wu Dong Sing Wuu D. R. T. Zahn 《Journal of Experimental and Theoretical Physics》2011,113(6):983-991
Raman scattering (including nonresonant, resonant, and surface enhanced scattering) of light by optical and surface phonons of ZnO nanocrystals and nanorods has been investigated. It has been found that the nonresonant and resonant Raman scattering spectra of the nanostructures exhibit typical vibrational modes, E 2(high) and A 1(LO), respectively, which are allowed by the selection rules. The deposition of silver nanoclusters on the surface of nanostructures leads either to an abrupt increase in the intensity (by a factor of 103) of Raman scattering of light by surface optical phonons or to the appearance of new surface modes, which indicates the observation of the phenomenon of surface enhanced Raman light scattering. It has been demonstrated that the frequencies of surface optical phonon modes of the studied nanostructures are in good agreement with the theoretical values obtained from calculations performed within the effective dielectric function model. 相似文献
137.
Toader M Knupfer M Zahn DR Hietschold M 《Journal of the American Chemical Society》2011,133(14):5538-5544
The adsorption of lutetium(III) bis-phthalocyanine (LuPc(2)) on Ag(111) was investigated using scanning tunneling microscopy and spectroscopy (STM/STS). A comprehensive study was carried out toward understanding the driving mechanism responsible for the formation of the first and second monolayers (MLs). In both MLs, the adsorbed molecules are found to exhibit different in-plane orientations arranged according to a "chess-board" like pattern. Highly resolved STM images allowed an exact determination of the corresponding angle mismatch, which differs for the first and second MLs. The tunneling transport through individual molecules reveals a negative differential resistance (NDR) effect detectable within the current-voltage curves. The corresponding density of states (DOS) representation is consistent with a resonant tunneling mechanism sustained by the valence band (VB) states close to the Fermi energy (E(F)) recorded via highly resolved ultraviolet photoemission spectroscopy (UPS). 相似文献
138.
Analytical and Bioanalytical Chemistry - 相似文献
139.
140.
An Unusual Trimeric Bimetallic Li? Zr Complex with the Backbone [Zr3(μ2-OH)3(μ3-O)Li5] by Reaction of Zirconiumorgano and Hydrido Complexes with Water The reaction of compounds of the type [(LZr)(LiH)(L′)]n and [(LZr)(LiH)(L′)(alkyne)]n (L: 2,2′-Biphenolato-dianion, L′: thf, Bu3P, alkyne: Ph? C?C? SiMe3, CH?CH) with water at 0°C in a thf solution results in the formation of th trimeric bimetallic complex 8 [(L2Zr)3(μ2-OH)3(μ3-O)Li5(thf)8(H2O)5] in 50% yield. The X-ray analysis of 8 shows that a planar six-membered ring Zr3(μ2-OH)3 is formed. In the middle of this ring is a dianionic oxygen atom placed, coordinating to the three L2Zr centres in a planar μ3-coordination (bond angles 120,05μ). Five lithium ions stabilize the anionic backbone by bridging the biphenolato chelate ligands, which form seven-membered chelate rings with the atoms. 1H-, 13C-, and 7Li-NMR spectra exhibit that the solid state structure remains unchanged in solution (thf). 相似文献