Search results for "LIMIT"
showing 10 items of 2826 documents
Thermodynamic limit of the two-spinon form factors for the zero field XXX chain
2019
In this paper we propose a method based on the algebraic Bethe ansatz leading to explicit results for the form factors of quantum spin chains in the thermodynamic limit. Starting from the determinant representations we retrieve in particular the formula for the two-spinon form factors for the isotropic XXX Heisenberg chain obtained initially in the framework of the $q$-vertex operator approach.
Kinetik der energieverbrauchenden Rückreaktion in der Atmungskette
1964
Die Kinetik der energieabhangigen Ruckreaktionen der Atmungskette wird fur die Atmungskettenkomponenten gemessen. Energiezufuhr wird durch Zusatz von ATP ausgelost. Die relative Geschwindigkeit der Ruckreaktion und der untersuchten Reaktionsschritte ist gleich gros (0,30 sec−1) bei 15°. Die Halbsattigungskonstante fur ATP in der Ruckreaktion ist 40 μM. Geschwindigkeitslimitierend fur die Ruckreaktion in der Atmungskette ist die Energieuberfuhrung von ATP. Die Hinreaktionen der Atmungskette, soweit sie zur Phosphorylierung gekoppelt ist, wird ebenfalls durch die Energieuberfuhrung auf ADP limitiert. Hohe Geschwindigkeiten der Hinreaktion lassen sich bei Entkopplung messen. Die Befunde deuten…
Trade Union Practices in the EU and Latvia: Experience for Eastern Partnership Countries
2014
Abstract The article will show major dimensions in the experience of EU Member States that could be shared with the Eastern Partnership (EaP) countries. The framework of the study is the EU concept of trade unions in social dialogue and social partnership in the public sector. This study outlines the concept of social dialogue as a core element of industrial relations and will focus on industrial relations specifically in the public sector. The authors have elaborated the approach to industrial relations and social dialogue taking into account comparative approach to definitions provided by international institutions such as ILO and OECD, as well as institutions in the EU and Latvia. Latvia…
La rationalité simonienne : interprétations et enjeux épistémologiques
1999
Since economics focuses on individual behaviour and implicitly adopt a methodological individualism, an individual rationality hypothesis must be laid down. Beyond the usual substantive rationality hypothesis, others forms of individual rationality can be found in economics theory. They are often related to the Simon's bounded rationality hypothesis. In the economics literature the meanings of the bounded rationality hypothesis are obviously diverse and sometimes based on a partial or superficial readings of Simon's writings. Moreover, each one of these meanings is implicitly closely linked with a particular methodological and epistemological position. Based on careful readings of Simon's w…
Basics of doubly heavy tetraquarks
2018
We outline the most important results regarding the stability of doubly heavy tetraquarks $QQ\bar q\bar q$ with an adequate treatment of the four-body dynamics. We consider both color-mixing and spin-dependent effects. Our results are straightforwardly applied to the case of all-heavy tetraquarks $QQ\bar Q\bar Q$. We conclude that the stability is favored in the limit $M_Q/m_q \gg 1$ pointing to the stability of the $bb\bar u\bar d$ state and the instability of all-heavy tetraquarks.
Vicarious liability for the carrier by river ?
2007
AbstractA case-study of a litigation during the years 1566–1574 between merchants from Oudenaarde and the Corporation of Free Shippers in Ghent shows that the corporation's liability for damage caused by one of its members was controversial. Although art. 20 of the ordinance of 14 February 1541 appeared to phrase the corporation's vicarious or subsidiary liability in general terms, the corporation's counsel, assisted by consultancies from a.o. E. Leoninus and J. Wamesius, successfully argued that in the light of the ordinance's rationale, which limited the free shippers' privileges in the aftermath of Charles V's punishment of Ghent in 1540, the corporation's liability had correspondingly t…
FLUCTUATION-INDUCED LOCAL OSCILLATIONS AND FRACTAL PATTERNS IN THE LATTICE LIMIT CYCLE MODEL
2003
The fractal properties of the Lattice Limit Cycle model are explored when the process is realized on a 2-dimensional square lattice support via Monte Carlo Simulations. It is shown that the structure of the steady state presents inhomogeneous fluctuations in the form of domains of identical particles. The various domains compete with one another via their borders which have self-similar, fractal structure. The fractality is more prominent, (fractal dimensions df < 2), when the parameter values are near the critical point where the Hopf bifurcation occurs. As the distance from the Hopf bifurcation increases in the parameter space the system becomes more homogeneous and the fractal dimens…
Extremely rapid acclimation of Escherichia coli to high temperature over a few generations of a fed-batch culture during slow warming
2014
This study aimed to demonstrate that adequate slow heating rate allows two strains of Escherichia coli rapid acclimation to higher temperature than upper growth and survival limits known to be strain-dependent. A laboratory (K12-TG1) and an environmental (DPD3084) strain of E. coli were subjected to rapid (few seconds) or slow warming (1 degrees C 12 h(-1)) in order to (re) evaluate upper survival and growth limits. The slow warming was applied from the ancestral temperature 37 degrees C to total cell death 46-54 degrees C: about 30 generations were propagated. Upper survival and growth limits for rapid warming (46 degrees C) were lower than for slow warming (46-54 degrees C). The thermal l…
Application of accelerated solvent extraction followed by gel performance chromatography and high-performance liquid chromatography for the determina…
2005
Accelerated solvent extraction (ASE) has been evaluated as a fast alternative to methanolic saponification for the extraction of 12 polycyclic aromatic hydrocarbons (PAHs) from mussel tissue. Several solvent systems and different operating conditions were investigated. The mixture dichloromethane-acetone (1:1, v/v) gave the best recoveries at 125 degrees C and 1500 psi, in a total time of 10 min. No yield difference was found between freeze-drying (Fd) or drying the wet mussel with diatomaceous earth (Ded) prior to extraction. The ASE method was validated using the standard reference material SRM 2977, a freeze-dried mussel tissue with naturally present organic contaminants. The performance…
Problemi di giurisdizione nel contrasto al traffico di migranti via mare
2018
I trafficanti di esseri umani si avvalgono con sempre più insistenza di ben collaudati protocolli operativi. Questi ultimi consentono loro di sottrarsi alla giurisdizione penale italiana che non si radica qualora – in ossequio ai criteri di cui all’art. 6 c.p.ed in conformità alla Convenzione sull’Alto Mare– l’azione illecita avvenga in acque internazionali.Così, premesse alcune linee concettuali sui limiti spaziali alla efficacia della legge penale, l’indagine si sofferma sulla soluzione ermeneutica offerta dallaCassazione che, apparentemente in modo sbrigativo e per esigenze di effettività della risposta punitiva, ha fatto ricorso alla controversa figura dell’autore mediato per sanzionare condott…