Climatic niche and neutral genetic diversity of the six Iberian pine species: a retrospective and prospective view

Quaternary climatic fluctuations have left contrasting historical footprints on the neutral genetic diversity patterns of existing populations of different tree species. We should expect the demography, and consequently the neutral genetic structure, of taxa less tolerant to particular climatic extremes to be more sensitive to long-term climate fluctuations. We explore this hypothesis here by sampling all six pine species found in the Iberian Peninsula (2464 individuals, 105 populations), using a common set of chloroplast microsatellite markers, and by looking at the association between neutral genetic diversity and species-specific climatic requirements. We found large variation in neutral genetic diversity and structure among Iberian pines, with cold-enduring mountain species (Pinus uncinata, P. sylvestris and P. nigra) showing substantially greater diversity than thermophilous taxa (P. pinea and P. halepensis). Within species, we observed a significant positive correlation between population genetic diversity and summer precipitation for some of the mountain pines. The observed pattern is consistent with the hypotheses that: (i) more thermophilous species have been subjected to stronger demographic fluctuations in the past, as a consequence of their maladaptation to recurrent glacial cold stages; and (ii) altitudinal migrations have allowed the maintenance of large effective population sizes and genetic variation in cold-tolerant species, especially in more humid regions. In the light of these results and hypotheses, we discuss some potential genetic consequences of impending climate change

Low energy scattering parameters from the solutions of the non-relativistic Yukawa model on a 3-dimensional lattice

The numerical solutions of the non-relativistic Yukawa model on a 3-dimensional size lattice with periodic boundary conditions are obtained. The possibility to extract the corresponding -- infinite space -- low energy parameters and bound state binding energies from eigensates computed at finite lattice size is discussed

Plume radiation program

Computer program determines the radiant flux to the base region of a real gas system with an axisymmetric geometry and any axisymmetric property distribution

Influence of oxidized oils on digestibility of caseins in O/W emulsions

The impact of lipid oxidation on protein modifications in emulsions and the consequences on protein digestibility remains unclear. In this study, this impact is evaluated in casein (6 mg mL(-1)) based emulsions containing oxidized soybean or fish oil (3%) in presence (0.3%) or absence of the emulsifier Tween 20. Emulsions are prepared using oils at three oxidation levels and subsequently the impact on protein digestibility is evaluated after 24 h incubation at 4 degrees C. Remarkably, protein digestibility increases in emulsions containing medium and highly oxidized fish oil: 70 +/- 0.4% and 73 +/- 0.4% of the proteins are digested, respectively, whereas protein digestibility in emulsions containing low oxidized fish oil amounted to 63 +/- 0.4%. Protein digestibility in emulsions containing soybean oil stabilized by Tween 20 is not influenced by the oxidation level of the oil used. A remarkable tendency is observed for the malondialdehyde content of the emulsions depending on the presence of Tween 20. For soybean oil based emulsions, malondialdehyde concentrations are consistently higher in the presence of Tween 20. On the other hand, for the fish oil based emulsions an opposite trend is observed, except at the highest oxidation level evaluated, for which no significant differences can be detected. It is concluded that the composition of the interface in emulsions depends strongly upon the degree of oil oxidation and the presence of other emulsifiers. If the oil is more oxidized, less protein is present in the interface restricting the impact of lipid oxidation products on the proteins and hence their digestibility

On the reduction of hypercubic lattice artifacts

This note presents a comparative study of various options to reduce the errors coming from the discretization of a Quantum Field Theory in a lattice with hypercubic symmetry. We show that it is possible to perform an extrapolation towards the continuum which is able to eliminate systematically the artifacts which break the O(4) symmetry.Comment: 15 pages. 4 figures. Minor changes (Appendix and refs added

Letter from Matilde M. de Soto and Maria Lydia Sanchez de Roman, Deputies of the Costa Rican Legislative Assembly, to Geraldine Ferraro

Letter from Matilde M. de Soto and Maria Lydia Sanchez de Roman, Deputies of the Costa Rican Legislative Assembly, to Geraldine Ferraro. Letter has handwritten notes and includes a Library of Congress translation.https://ir.lawnet.fordham.edu/vice_presidential_campaign_correspondence_1984_international/1344/thumbnail.jp

Three different approaches to the same interaction: the Yukawa model in nuclear physics

After a brief discussion of the meaning of the potential in quantum mechanics, we examine the results of the Yukawa model (scalar meson exchange) for the nucleon-nucleon interaction in three different dynamical frameworks: the non-relativistic dynamics of the Schrodinger equation, the relativistic quantum mechanics of the Bethe-Salpeter and Light-Front equations and the lattice solution of the Quantum Field Theory, obtained in the quenched approximation.Comment: 17 pages, 9 figures. Dedicated to Professor Henryk Witala at the occasion of his 60th birthday. Submitted in Few-Body System

The personal income tax applied in the member states of European Union. The case of Spain.

In the Communication on "Tax policy in the European Union - Priorities for the years ahead" (COM/2001/260 of 23 May 2001), the Commission reiterated its belief that there is no need for an across the board harmonisation of Member States' direct tax systems. For tax policy, the Communication established, as a main priority, the need to address the concerns of individuals and businesses operating within the Internal Market by focusing on the elimination of tax obstacles to all forms of cross-border economic activity, in addition to continuing the fight against harmful tax competition. This approach was confirmed in the Communication "The contribution of taxation and customs policies to the Lisbon strategy" (COM/2005/532 of 25 October 2005) (European Commission, 2006). The Spanish Law No 35/2006, 28 th November of Personal Income Tax, reformed that tax. The long-term capital gains will be taxed at 18% (before 15%) ;the tax scale will be comprised of only 3 or 4 brackets (before 5) and the top marginal rate (before 45%) will be reduced; and some tax credits and allowances (acquisition of permanent home and contributions to pension funds for example) were readjusted in order to make them more accessible to low-income earners. The present paper makes a brief approach to the harmonisation in the European Union, explains the reform of the Spanish Personal Income Tax, introduces new figures and formulas never seen before at book of taxes, analyses the concept of the Spanish Personal Income Tax, studies the elements of this tax as the beneficiary, taxable person, territoriality, basis of assessment, exemptions, explains the basic mechanism of the tax, deductions, the taxable base, the tax rates, collections and examples. This paper is the result of three researches that the authors are carrying out at The Institute for Fiscal Studies, Ministry of Economy and Finance, University of CEU San Pablo, Madrid and University of Oviedo Spain from 2006 to 2008