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21.
The paper illustrates a solution approach for the Saint-Venant flexure problem which preserves a pure objective tensor form, thus yielding, for sections of arbitrary geometry, representations of stress and displacement fields that exploit exclusively frame-independent quantities. The implications of the availability of an objective solution to the shear warpage problem are discussed and supplemented by several analytical and numerical solutions. The derivation of tensor expressions for the shear center and the shear flexibility tensor is also illustrated. Furthermore, a Cesaro-like integration procedure is provided whereby the derivation of a frame-independent representation of the displacements field for the shear loading case is systematically carried out via the use of Gibbs’ algebra. The objective framework presented in this paper is further exploited in a companion article (Serpieri, in J. Elast. (2013)) to prove the coincidence of energetic and kinematic definitions of the shear flexibility tensor and of the shear principal axes. 相似文献
22.
Hans-Jörg G. Diersch Volker Clausnitzer Volodymyr Myrnyy Rodrigo Rosati Mattias Schmidt Holger Beruda Bruno J. Ehrnsperger Raffaele Virgilio 《Transport in Porous Media》2010,83(3):437-464
The flow and deformation processes in swelling porous media are modeled for absorbent hygiene products (e.g., diapers, wipes,
papers etc.). The first part of the article derives the fundamental equations for the hysteretic unsaturated flow, liquid
absorption, and large deformation. The final set of model equations consists of balance equations of mobile and absorbed (immobile)
liquid combined with a series of constitutive relationships. The resulting equation system is strongly nonlinear and requires
advanced numerical strategies for solving. The second part of the article focuses on numerical solution and presents simulation
results for 2D and 3D applications. 相似文献
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Maria Vittoria Barbarulo Francesca Buiarelli Massino Ciardi Alberto Giarrusso Felice Rosati G. P. Cartoni 《Journal of separation science》1995,18(11):705-708
The metabolism of oxabolone cipionate, 17-(3-cyclopentyl-1-oxopropoxy)-4-hydroxyestr-4-en-3-one, a synthetic anabolic steroid, was investigated in man, the cumulative urinary excretion and the metabolism of the compounds being studied by GC-MS in both electron impact and chemical ionization modes. After administration by injection to volunteers, five different metabolities were detected in urine. The metabolites and the parent compound were detected in urine up to a week after administration. 相似文献
25.
The total synthesis of velbanamine 总被引:1,自引:0,他引:1
26.
We introduce a procedure which transforms a given incidence structure into another one, provided certain conditions are met.Work performed under the auspices of GNSAGA of CNR supported by the 40% and 60% grants of MURST. 相似文献
27.
Antoniazzi L Arenton M Cao Z Chen T Conetti S Cox B Delchamps S Fortney L Guffey K Haire M Ioannou P Jenkins CM Judd DJ Kourkoumelis C Manousakis-Katsikakis A Kuzminski J LeCompte T Marchionni A He M Mazur PO Murphy CT Pramantiotis P Rameika R Resvanis LK Rosati M Rosen J Shen C Shen Q Simard A Smith RP Spiegel L Stairs DG Tan Y Tesarek RJ Turkington T Turnbull L Turkot F Tzamarias S Voulgaris G Wagoner DE Wang C Yang W Yao N Zhang N Zhang X Zioulas G Zou B 《Physical review D: Particles and fields》1992,46(11):4828-4835
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Paolo Ceccherelli † Massimo Curini Maria Carla Marcotullio Francesco Epifano Ornelio Rosati 《合成通讯》2013,43(16):3057-3064
A mild and convenient oxidative Nef reaction using Oxone® (potassium hydrogen persulfate) is described. Following our procedure primary and secondary nitroalkanes generate carboxylic acids and ketones, respectively, both in good yields. 相似文献
30.