排序方式: 共有55条查询结果,搜索用时 15 毫秒
31.
A. Pluchino A. Rapisarda V. Latora 《The European Physical Journal B - Condensed Matter and Complex Systems》2008,65(3):395-402
We have recently introduced [Phys. Rev. E 75, 045102(R) (2007); AIP Conference Proceedings 965, 2007, p. 323] an efficient method for the detection and identification of modules in complex networks, based on the de-synchronization
properties (dynamical clustering) of phase oscillators. In this paper we apply the dynamical clustering tecnique to the identification
of communities of marine organisms living in the Chesapeake Bay food web. We show that our algorithm is able to perform a
very reliable classification of the real communities existing in this ecosystem by using different kinds of dynamical oscillators.
We compare also our results with those of other methods for the detection of community structures in complex networks. 相似文献
32.
Caterina Russo Alessandro Maugeri Giovanni Enrico Lombardo Laura Musumeci Davide Barreca Antonio Rapisarda Santa Cirmi Michele Navarra 《Molecules (Basel, Switzerland)》2021,26(19)
Citrus fruits (CF) are among the most widely cultivated fruit crops throughout the world and their production is constantly increasing along with consumers’ demand. Therefore, huge amounts of waste are annually generated through CF processing, causing high costs for their disposal, as well as environmental and human health damage, if inappropriately performed. According to the most recent indications of an economic, environmental and pharmaceutical nature, CF processing residues must be transformed from a waste to be disposed to a valuable resource to be reused. Based on a circular economy model, CF residues (i.e., seeds, exhausted peel, pressed pulp, secondary juice and leaves) have increasingly been re-evaluated to also obtain, but not limited to, valuable compounds to be employed in the food, packaging, cosmetic and pharmaceutical industries. However, the use of CF by-products is still limited because of their underestimated nutritional and economic value, hence more awareness and knowledge are needed to overcome traditional approaches for their disposal. This review summarizes recent evidence on the pharmacological potential of CF waste to support the switch towards a more environmentally sustainable society. 相似文献
33.
MV Muftakhov YV Vasil'ev VA Mazunov 《Rapid communications in mass spectrometry : RCM》1999,13(12):1104-1108
Appearance energies of [M-H](-) ions from carbonyl compounds R-CO-R' (R,R' = H, CH(3), NH(2), OH) have been measured by means of negative ion mass spectrometry in resonant electron capture mode. Values of electron affinity of the corresponding radicals, CH(2)&dbond;C(X)O, NH&dbond;C(X)O and O&dbond;C(X)O, have been determined. Copyright 1999 John Wiley & Sons, Ltd. 相似文献
34.
Valeria Sorrenti Valeria Consoli Salvo Grosso Marco Raffaele Margherita Amenta Gabriele Ballistreri Simona Fabroni Paolo Rapisarda Luca Vanella 《Molecules (Basel, Switzerland)》2021,26(15)
The consumption of plant-based food is important for health promotion, especially regarding the prevention and management of chronic diseases such as diabetes. We investigated the effects of a lemon extract (LE), containing ≥20.0% total flavanones and ≥1.0% total hydroxycinnamic acids, on insulin signaling in murine 3T3-L1 adipocytes treated with TNF-α, which was used to mimic in vitro the insulin resistance condition that characterizes diabetes mellitus. Our results showed LE increased PPARγ, GLUT4 and DGAT-1 levels, demonstrating the potential of this lemon extract in the management of insulin resistance conditions associated with TNF-α pathway activation. LE treatment further decreased the release of interleukin 6 (IL-6) and restored triglyceride synthesis, which is the main feature of a healthy adipocyte. 相似文献
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Alessandro Pluchino Cesare Garofalo Andrea Rapisarda Salvatore Spagano Maurizio Caserta 《Physica A》2011,390(21-22):3944-3954
We study a prototypical model of a Parliament with two Parties or two Political Coalitions and we show how the introduction of a variable percentage of randomly selected independent legislators can increase the global efficiency of a Legislature, in terms of both the number of laws passed and the average social welfare obtained. We also analytically find an “efficiency golden rule” which allows to fix the optimal number of legislators to be selected at random after that regular elections have established the relative proportion of the two Parties or Coalitions. These results are in line with both the ancient Greek democratic system and the recent discovery that the adoption of random strategies can improve the efficiency of hierarchical organizations. 相似文献
37.
A. Tumino C. Spitaleri A. Mukhamedzhanov G. G. Rapisarda S. Blagus M. Bogovać S. Cherubini V. Crucillá Z. Elekes Z. Fülöp M. Gulino G. Gyürky G. Kiss Dj. Miljanić M. Milin M. La Cognata L. Lamia R. G. Pizzone D. Rendić S. Romano M. L. Sergi E. Somorjai 《Few-Body Systems》2008,43(1-4):219-225
We address a successful indirect technique, the Trojan horse method, which allows one to measure the bare nucleus cross section for rearrangement reactions down to astrophysical energies. In particular, we consider here the application of the method to the p-p elastic scattering. This represents an important test of the main feature of the method, namely the suppression of Coulomb effects in the entrance channel due to off-energy-shell effects. In contrast to the on-energy-shell case, the extracted p-p cross section does not exhibit the Coulomb-nuclear interference minimum, as predicted by the half-off-energy shell calculations. This hypothesis is strengthened by the agreement between the Trojan horse p-p data and the calculated on-energy-shell n-n, n-p and nuclear p-p cross sections. 相似文献
38.
M. La Cognata A. Del Zoppo P. Figuera A. Musumarra R. Alba S. Cherubini N. Colonna L. Cosentino V. Crucillà A. Di Pietro M. Gulino L. Lamia M.G. Pellegriti R.G. Pizzone S.M.R. Puglia G.G. Rapisarda C. Rolfs S. Romano M.L. Sergi C. Spitaleri S. Tudisco A. Tumino 《Physics letters. [Part B]》2008
The 8Li + 4He → 11B + n reaction at Ecm<2 MeV is a process of relevant astrophysical interest for which a remarkable experimental discrepancy between inclusive and exclusive cross-section measurements exists. In this Letter, a new inclusive neutron measurement at Ecm=1.05±0.16 MeV is given. The radioactive 8Li beam was delivered by the EXCYT facility. The cross section was determined by a low-background measurement of the time correlation between the 8Li projectile arrival to the target and the following neutron capture in a threshold-less 4π thermalization counter. This new data strengthens the reliability of the previous inclusive reaction cross-section data and altogether are consistent with a significant population of 11B levels at high excitation energy. 相似文献
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Guy Indebetouw 《中国光学快报(英文版)》2009,(12)
Recent developments in scanning holographic microscopy that offer the prospects of new quantitative tools and imaging modalities in bio, micro, and nano sciences are reviewed. The versatility of the method is emphasized. Scanning holography can operate in an incoherent mode for fluorescence imaging, in a coherent mode for quantitative phase imaging, or in a tomographic mode for axial sectioning and rejection of the out-of-focus haze. Possible applications are illustrated with examples, and future prospects ... 相似文献