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991.
992.
993.
Pietro D'Ambrosio Domenico De Tommasi Pilade Foti Mario Daniele Piccioni 《Journal of Elasticity》2003,73(1-3):237-249
In this paper we obtain necessary conditions for the existence of pairwise deformations of an incompressible, isotropic elastic body subjected to a homogeneous distribution of dead-load tractions. Explicit restrictions on the boundary loads and on the surface of discontinuity between the phases are determined. For hyperelastic bodies with stored energy depending only on the first invariant of strain, we show that pairwise deformations under examination are necessarily (within a rigid rotation) plane deformations. 相似文献
994.
995.
D. Pierroutsakou A. Boiano A. De Rosa M. Di Pietro G. Inglima M. La Commara Ruhan Ming B. Martin R. Mordente A. Ordine F. Rizzo V. Roca M. Romoli M. Sandoli F. Soramel L. Stroe M. Trotta E. Vardaci 《The European Physical Journal A - Hadrons and Nuclei》2003,17(1):71-76
The 32S + 100Mo and 36S + 96Mo fusionlike reactions were studied at incident energy of E
lab = 298 MeV and 320 MeV, respectively, with the aim of probing the influence of the entrance channel charge asymmetry on the
dipole γ-ray emission. The excitation energy and spin distribution of the compound nucleus created in these reactions were
identical, the only difference being associated with the unequal charge asymmetry of the two entrance channels. High-energy
γ-rays were detected in an array of 9 seven-pack BaF2 clusters. Coincidence with fusionlike residues detected in four PPAC ensured the selection of central reaction events. By
studying the differential γ-ray multiplicity associated with the two reactions it was shown that the dipole strength excited
in the compound nucleus increases with the entrance channel charge asymmetry. From the linearized spectra, the increase of
the GDR γ-ray intensity was found to be ∼ 25% for the more charge asymmetric system. The results are discussed and compared
with those of previous data obtained at different incident energies.
Received: 21 October 2002 / Accepted: 23 December 2002 / Published online: 1 April 2003 相似文献
996.
Anatolii Baskakov Pietro Zecca 《Journal of Mathematical Analysis and Applications》2006,324(2):1310-1323
In this paper we study the solvability of some classes of differential inclusions with multivalued linear operators in homogeneous spaces of functions. These spaces include a large number of functional spaces like periodic functions and Bohr and Stepanov almost periodic functions. As an application, we consider some existence results for feedback control systems governed by degenerate differential equations of Sobolev type in a Banach space. 相似文献
997.
Tommasina Coviello Laura Bertolo Pietro Matricardi Antonio Palleschi Gianfranco Bocchinfuso Adriana Maras Franco Alhaique 《Colloid and polymer science》2009,287(4):413-423
The peculiar unidirectional elongation observed during swelling of tablets prepared with scleroglucan (Sclg) and borax was
compared with that of other synthetic and natural polymers capable of physical/chemical interactions with borate ions. A dynamomechanical
characterization of “squared” Sclg/borax tablets was carried out to study the differences detectable on the two sides of the
matrix corresponding to the two directions, respectively, the parallel and perpendicular one with respect to the applied compression
force. Different compression forces were used and, in some cases, a second compression was applied on the tablets along a
direction perpendicular to the first one. Birefringence experiments were carried out on the swelled tablets along the two
directions. Obtained results allow correlating the anisotropic swelling behavior with the detected dynamomechanical and optical
properties of the Sclg/borax system. Among the various tested polymers, only guar gum and, to a lesser extent, locust bean
gum, showed an anisotropic elongation during swelling. 相似文献
998.
Ramón Gutiérrez-Castrejón Marcus Duelk Pietro Bernasconi 《Optical and Quantum Electronics》2006,38(12-14):1125-1134
A novel graphical computational tool to simulate a wide variety of complex optoelectronic integrated circuits is presented. Based upon a modular approach, this tool reduces the optical circuit into a sequence of interconnected building blocks, each one performing a specific data-flow oriented function onto an input optical stream. The modularity and the flow-based interconnectivity makes this simulator flexible and powerful, yet intuitive. Its execution speed is evaluated using a sophisticated amplifier simulation module that is compared against its replica written in a text-based programming language. More than four times outperformance is reported. The simulator capabilities are further demonstrated through an application example in the field of optical data processing: the analysis of a semiconductor optical amplifier-based Mach–Zehnder interferometer operated as wavelength converter for signals modulated at 40 Gb/s. This simulator represents an attractive alternative to more traditional approaches. 相似文献
999.
1000.
NH‐Heterocyclic Aryliodonium Salts and their Selective Conversion into N1‐Aryl‐5‐iodoimidazoles 下载免费PDF全文
Yichen Wu Dr. Susana Izquierdo Dr. Pietro Vidossich Prof. Dr. Agustí Lledós Dr. Alexandr Shafir 《Angewandte Chemie (International ed. in English)》2016,55(25):7152-7156
The synthesis of N‐arylimidazoles substituted at the sterically encumbered 5‐position is a challenge for modern synthetic approaches. A new family of imidazolyl aryliodonium salts is reported, which serve as a stepping stone on the way to selective formation of N1‐aryl‐5‐iodoimidazoles. Iodine acts as a “universal” placeholder poised for replacement by aryl substituents. These new λ3‐iodanes are produced by treating the NH‐imidazole with ArI(OAc)2, and are converted to N1‐aryl‐5‐iodoimidazoles by a selective copper‐catalyzed aryl migration. The method tolerates a variety of aryl fragments and is also applicable to substituted imidazoles. 相似文献