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排序方式: 共有141条查询结果,搜索用时 15 毫秒
91.
Mastinu Gianpiero Biggio Danilo Della Rossa Fabio Fainello Marco 《Nonlinear dynamics》2020,99(4):2801-2818
Nonlinear Dynamics - The stability of the straight ahead running motion of automobiles is studied with proper theoretical tools pertaining to bifurcation theory. The study is both theoretical and... 相似文献
92.
This paper studies the state-effect-probability structure associated with thequantum mechanics of nonlinear (homogeneous, in general nonadditive) operatorson a Hilbert space. Its aim is twofold: to provide a concrete representation ofthe features of nonlinear quantum mechanics on a Hilbert space, and to showthat the properties of the nonlinear version of quantum mechanics here describedhave the structure of a classical logic. 相似文献
93.
Dr. Gianpiero Forte Dr. Maria S. Maglione Dr. Ludovico G. Tulli Alessia Fantoni Prof. Antonella Dalla Cort 《ChemistryOpen》2021,10(8):848-851
A novel water-soluble uranyl-salophen (salophen=N,N‘-disalicylidene-o-phenylenediaminate) complex was obtained. Solubility was achieved in aqueous methyl-β-cyclodextrin solutions, taking advantage of the host-guest interactions established with the adamantyl moieties present on the ligand skeleton. Such an approach facilitates the synthesis of the receptor and the purification processes and, in perspective, can be definitely applicable to other molecular scaffolds. UV/Vis titration experiments demonstrate that the capacity of the uranyl-salophen core to behave as a receptor for anions is retained in water and appears comparable with that previously reported for other water-soluble uranyl-salophen systems. Hence the presence of cyclodextrins does not interfere with molecular recognition processes. 相似文献
94.
95.
Iacobazzi Fabrizio Milanese Marco Colangelo Gianpiero de Risi Arturo 《Journal of Thermal Analysis and Calorimetry》2019,135(1):371-377
Journal of Thermal Analysis and Calorimetry - In the present work, an investigation on the relationship between clustering phenomenon and thermal conductivity of nanofluids is presented.... 相似文献
96.
The synthesis of architecturally complex polycyclic fused indolines is achieved in a chemo-, regio-, and stereodefined manner, via an enantioselective gold-catalyzed cascade hydroindolination/iminium trapping synthetic sequence. Highly functionalized tetracyclic fused furoindolines (2) and dihydropyranylindolines (4) are synthesized in moderate to good yields and enantiomeric excesses of up to 87%. 相似文献
97.
Federico Cozzi Gianpiero Adami Pierluigi Barbieri Edoardo Reisenhofer Pietro Apostoli Massimo Bovenzi 《Central European Journal of Chemistry》2010,8(5):1014-1026
PM10 samples were collected during winter and summer seasons at two different sites in the area of Trieste (Italy). The content
of As, Cd, Cr, Mn, Ni, Pb and V in the PM10 samples was determined by inductively coupled plasma-mass spectrometry, with the purpose of evaluating the relevance of PM10 inhalation as a route of human exposure to these elements. The results showed that the ambient air concentration of the aforementioned
elements were below the limits or target values for both sites and season. Site and season-specific correlation analysis was
conducted for the identification of metals with similar origin: very good correlation for the couple Ni-V was found in both
sites and seasons, showing the influence of combustion of heavy oils in PM10 composition. The inter-site and seasonal variability of both PM10 and metal concentrations were examined. A stronger impact by the vehicular traffic on the PM10 and metal concentrations was found for the urban site in both seasons. Because of the great importance of the “Bora” wind
on the local climate, variability of PM10 and toxic elements concentration with wind were analysed, allowing determination of the effect of wind on dilution of the
pollutants for the urban site during both seasons.
相似文献
98.
Murgia S Lampis S Zucca P Sanjust E Monduzzi M 《Journal of the American Chemical Society》2010,132(45):16176-16184
Mononucleotides, when entrapped within a mono-olein-based cubic Ia3d liquid crystalline phase, have been found to undergo hydrolysis at the sugar-phosphate ester bond in spite of their natural inertness toward hydrolysis. Here, kinetics of the hydrolysis reaction and interactions between the lipid matrix and the mononucleotide adenosine 5'-monophosphate disodium salt (AMP) and its 2'-deoxy derivative (dAMP) are thoroughly investigated in order to shed some light on the mechanism of the nucleotide recognition and phosphate ester hydrolysis. Experiments evidenced that molecular recognition occurs essentially through the sn-2 and the sn-3 alcoholic OH groups of mono-olein. As deduced from the apparent activation energies, the mechanism underlying the hydrolysis reaction is the same for AMP and dAMP. Nevertheless, the reaction proceeds slower for the latter, highlighting a substantial difference in the chemical behavior of the two nucleotides. A model that explains the hydrolysis reaction is presented. Remarkably, the hydrolysis mechanism appears to be highly specific for the Ia3d phase. 相似文献
99.
Gianpiero Bianchi Renato Bruni Alessandra Reale Fabio Sforzi 《Optimization Letters》2016,10(5):955-973
In several economical, statistical and geographical applications, a territory must be subdivided into functional regions. Such regions are not fixed and politically delimited, but should be identified by analyzing the interactions among all its constituent localities. This is a very delicate and important task, that often turns out to be computationally difficult. In this work we propose an innovative approach to this problem based on the solution of minimum cut problems over an undirected graph called here transitions graph. The proposed procedure guarantees that the obtained regions satisfy all the statistical conditions required when considering this type of problems. Results on real-world instances show the effectiveness of the proposed approach. 相似文献
100.
In the case of large-scale surveys, such as a Census, data may contain errors or missing values. An automatic error correction procedure is therefore needed. We focus on the problem of restoring the consistency of agricultural data concerning cultivation areas and number of livestock, and we propose here an approach to this balancing problem based on optimization. Possible alternative models, either linear, quadratic or mixed integer, are presented. The mixed integer linear one has been preferred and used for the treatment of possibly unbalanced data records. Results on real-world Agricultural Census data show the effectiveness of the proposed approach. 相似文献