Search results for "Rust"

Continental degassing of helium in an active tectonic setting (northern Italy): the role of seismicity

2020

AbstractIn order to investigate the variability of helium degassing in continental regions, its release from rocks and emission into the atmosphere, here we studied the degassing of volatiles in a seismically active region of northern Italy (MwMAX = 6) at the Nirano-Regnano mud volcanic system. The emitted gases in the study area are CH4–dominated and it is the carrier for helium (He) transfer through the crust. Carbon and He isotopes unequivocally indicate that crustal-derived fluids dominate these systems. An high-resolution 3-dimensional reconstruction of the gas reservoirs feeding the observed gas emissions at the surface permits to estimate the amount of He stored in the natural reserv…

Sosiaalisen taustan yhteydet motorisiin taitoihin kilparyhmään valituilla 6-10-vuotiailla joukkuevoimistelijoilla

2017

Lehtonen, A. 2017. Sosiaalisen taustan yhteydet motorisiin taitoihin kilparyhmään valituilla 6-10-vuotiailla joukkuevoimistelijoilla. Liikuntatieteellinen tiedekunta, Jyväskylän yliopisto, Liikuntapedagogiikan pro gradu -tutkielma, 82 s., 3 liitettä. Tutkimuksen tarkoituksena oli selvittää millaiset sosiaaliset taustat ja motoriset taidot 6-10-vuotiaat joukkuevoimistelijat omaavat, sekä tutkia sosiaalisen taustan yhteyksiä motorisiin perustaitoihin. Motoristen taitojen kehittymiseen vaikuttavat lapsen kasvuympäristö, perimä, ikä, sukupuoli, harjoittelu ja fyysinen aktiivisuus. Sosiaalinen tausta tässä tutkimuksessa tutkittiin kasvatuksella, perheen rakenteella ja liikunnallisuudella, vanhem…

Mitochondrial DNA variation and the evolutionary history of cryptic Gammarus fossarum types.

2000

The evolutionary history of the cryptic Gammarus fossarum species complex (Crustacea, Amphipoda) in Central Europe was approached by investigating the genetic variation in populations of a natural contact zone. Nucleotide sequence variation of a 395-bp segment of the mitochondrial 16S rRNA gene was compared to that of six nuclear allozyme loci. Three major mtDNA lineages were found, the eastern clade being consistent with the former allozyme type A. The two western clades (types B and C) were not distinguished previously. Strong sequence divergence and correlation with nuclear genetic isolation in syntopic populations, however, justifies the specific status of the three G. fossarum types. T…

Disordered and Frustrated Spin Systems

2007

A brief review on the effects of quenched disorder on magnetic ordering is given. This disorder can be due to dilution of a ferro- or antiferromagnetic crystal with nonmagnetic atoms, or due to noncrystallinity (amorphous magnetic systems). This disorder in the positions of the magnetic atoms leads to disorder in the exchange interactions between spins. If the disorder is sufficiently weak, the critical temperature of magnetic ordering is somewhat decreased, and the critical behavior may change, but the nature of ordering is maintained. However, if the disorder is sufficiently strong, magnetic long-range order may disappear altogether at a percolation threshold, or a new type of order may a…

Il procuratore sportivo negli U.S.A.: spunti di riflessione per il sistema sportivo nazionale.

2012

OSSERVAZIONI CRITICHE A MARGINE DELLA RIFORMA DELL’AGENTE SPORTIVO. UNA LEZIONE DAGLI U.S.A.

2019

The essay, analyzing the evolution of the figure of the sports agent in the light of the recent legislative intervention by the State, shows how this activity, although never explicitly assimilated to that of a regulated profession has been, in fact, regulated as such. In this perspective, the work examines the question of compatibility with antitrust principles and highlights problems and gaps raised by the new discipline, suggesting, at the same time, a different interpretation based on the U.S. model.

Standard, estandarización y aplicación del artículo 102 TFUE a los conflictos sobre licencias relativas a derechos de propietad intelectual

2014

The standardization, de jure as well as de facto, gives rise to critical issues also in the field of antitrust law. Especially in recent years, the European case law and that of some member states have in particular dealt with the violation of the so-called FRAND commitments, which are undertaken by the holders of those patents that become essential for the implementation of the selected standard (Standard Essential Patents - SEPs). The EU Commission and the Courts have then several times applied the provisions on abuse of a dominant position to the attempt of the SEPs holders to prevent access to these patents by subjects that need them to operate in the downstream markets. The essay trace…

Multivariate GARCH estimation via a Bregman-proximal trust-region method

2011

The estimation of multivariate GARCH time series models is a difficult task mainly due to the significant overparameterization exhibited by the problem and usually referred to as the "curse of dimensionality". For example, in the case of the VEC family, the number of parameters involved in the model grows as a polynomial of order four on the dimensionality of the problem. Moreover, these parameters are subjected to convoluted nonlinear constraints necessary to ensure, for instance, the existence of stationary solutions and the positive semidefinite character of the conditional covariance matrices used in the model design. So far, this problem has been addressed in the literature only in low…

J. Lautenbacha kritika par Raiņa lugu "Pusidealists"

1905

Manuskripts rokrakstā, datējums nav precīzi zināms.

Insertion Reactions of Neutral Phosphidozirconocene Complexes as a Convenient Entry into Frustrated Lewis Pair Territory

2016

International audience; Neutral phosphidozirconocene complexes [Cp2Zr(PR2)Me] (Cp=cyclopentadienyl; 1a: R=cyclohexyl (Cy); 1b: R=mesityl (Mes); 1c: R=tBu) undergo insertion into the Zr-P bond by non-enolisable carbonyl building blocks (O=CRR), such as benzophenone, aldehydes, paraformaldehyde or CO2, to give [Cp2Zr(OCRRPR2)Me] (3-7). Depending on the steric bulk around P, complexes 3-7 react with B(C6F5)(3) to give O-bridged cationic zirconocene dimers that display typical frustrated Lewis pair (FLP)/ambiphilic ligand behaviour. Thus, the reaction of {[Cp2Zr(-OCHPhPCy2)][MeB(C6F5)(3)]}(2) (10a) with chalcone results in 1,4 addition of the Zr+/P FLP, whereas the reaction of {[Cp2Zr(-OCHFcPCy…