Residual effect of natural and synthetic zinc chelates on zinc in a soil solution of a waterlogged acidic soil. Evolution of the pH and redox potential.

Zinc chelates have been widely used to correct deficiencies in this micronutrient in different soil types and under different moisture conditions. The aging of the metal in soil could cause a change in its availability. Over time the most labile forms of Zn could decrease in activity and extractability and change to more stable forms. Various soil parameters, such as redox conditions, time, soil type and moisture conditions, affect the aging process and modify the solubility of the metal. In general, redox conditions influence pH and also the chemical forms dissolved in the soil solution. Soil pH also affects Zn solubility; at high pH values, most of the Zn is present in forms that are not bioavailable to plants. The objective of this study was to determine the changes in Zn over time in a soil solution in a waterlogged acidic soil to which synthetic and natural chelates were applie

The group of strong Galois objects associated to a cocommutative Hopf quasigroup

Let H be a cocommutative faithfully flat Hopf quasigroup in a strict symmetric monoidal category with equalizers. In this paper we introduce the notion of (strong) Galois H-object and we prove that the set of isomorphism classes of (strong) Galois H-objects is a (group) monoid which coincides, in the Hopf algebra setting, with the Galois group of H-Galois objects introduced by Chase and Sweedler

Arqueología en áreas de montaña. Ganadería, movimientos pastoriles y cultura material

González Álvarez, David & Rodríguez Hernández, Jesús (2011): Arqueología en áreas de montaña. Ganadería, movimientos pastoriles y cultura material. In: OrJIA (ed.), Actas de las II Jornadas de Jóvenes en Investigación Arqueológica (JIA 2009), tomo I. Zaragoza: Libros Pórtico, 121-122.Peer reviewe

Métodos de análisis de elementos en suelos: disponibilidad y fraccionamiento

En este trabajo se presenta una revisión de los métodos de análisis de elementos metálicos, principalmente de Cu y de Zn en suelos agrícolas, destacando los más utilizados. Algunos de los métodos descritos tienen un campo de aplicación mayor, empleándose también en análisis de sedimentos, lodos, residuos sólidos, suelos tratados con residuos, suelos contaminados, etc. Asimismo, se presentan algunas posibles líneas de desarrollo futuro de estos métodos

Prevalence of Perineal Tear Peripartum after Two Antepartum Perineal Massage Techniques: A Non-Randomised Controlled Trial

[EN] Perineal massage increases elasticity of myofascial perineal tissue and decreases the burn-ing and perineal pain during labour, thus optimising child birth, although an application protocol has not been standardised yet. The objective of this study is to determine the efficiency of massage in perineal tear prevention and identification of possible differences in massage application. Total of 90 pregnant participants were divided into three groups: perineal massage and EPI-NO® device group, applied by an expert physiotherapist, self-massage group, where women were instructed to apply perineal massage in domestic household, and a control group, which received ordinary obstetric attention. Results: The results showed significant differences among the control group and the two perineal massage groups in perineal postpartum pain. Correlations in perineal postpartum pain, labour duration and the baby’s weight were not statistically significant. Lithotomy posture was significantly less prevalent in the massage group than in the other two; this variable is known to have a direct effect on episiotomy incidence and could act as a causal covariate of the different incidence of episiotomy in the groups. Perineal massage reduces postpartum perineal pain, prevalence and severity of perineal tear during delivery.S