Nota sobre les roques hipabissals de la Serra de Tramuntana de Mallorca:

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Pumping seawater from coastal aquifers for supplying desalination plants

The lack of water in the coastal areas demands an onerous search for an appropriate solution. One solution is that of water transfer from areas of surplus, but this is itself problematical. Technological developments have introduced the possibility of utilizing desalinated seawater as a drinking water source at a competitive price. Abstraction from coastal aquifers that are connected to the sea appears to be the cheapest means of supply. However, pumping poses some problems due to the corrosiveness of seawater. These problems include the difficulties of choosing suitable sites for the abstractions, drilling method, casing, filter pack, as well as the design of a monitoring system to assess aquifer behaviour as a result of the generally high exploitation rate. The 31 boreholes that have been drilled in the Andarax Delta near the city of Almeria are cited as an example of a real application

Efecto de dosis de acido polimaleico en la estabilidad estructural de suelos salinos.

Se estudió el efecto de distintas dosis de ácido polimaleico sobre la estabilidad estructural de tres tipos de suelos salinos. Se separaron los agregados naturales que pasaron por el tamiz de 4,00 mm y quedaron retenidos en el tamiz de 2,00 mm, se aplicaron dosis de ácido polimaleico de 0,5, 10 y 15 L/ha sobre los agregados. Cada 30 dias se determinó la distribución de agregados estables y el porcentage de arcilla dispersa en agua. Para los tres tipos de suelos las dosis más elevadas presentaron un mayor aumento del diámetro medio ponderado de los agregados y mayor reducción del porcentaje de arcilla dispersa en agua

Un nou llistonar (Teucrio muletii-Brachypodietum retusi ass. nova) per a la província de Castelló (Espanya)

Es proposa un nou llistonar (Teucrio muletii-Brachypodietum retusi) pertanyent a l’aliança Teucrio pseudochamaepityos-Brachypodion retusi (classe Lygeo-Stipetea), emplaçada al Paratge Natural del Desert de les Palmes (Castelló, Espanya).A new association of perennial xerophytic grassland (Teucrio muletii-Brachypodietum retusi) belonging to the alliance Teucrio pseudochamaepityos-Brachypodion retusi (Lygeo-Stipetea class) is proposed, occurring in the Natural Park Desert de les Palmes (Castellón, Spain)

Centaurea X sanchisiana nothosp. nov. (Asteraceae), a new hibrid for the iberian flora

Es descriu un nou híbrid del gènere Centaurea L. (Asteraceae) producte de l'encreuament entre C. Aspera L. i C. bofilliana Sennen ex Devesa & E. López, C. x sanchisiana nothosp. nov., a més de dues noves notovarietats, Var. malvarosae i var. pectiniformis. Aquestos híbrids han estat localitzats a Alatoz i Casas de Ves (Albacete, Espanya) i Borriana (Castelló, Espanya) respectivament. A més de les corresponents descripcions i diagnosis, s'hi aporten 4 lamines i una taula amb els principals trets diagnòstics que els diferencien deis parentals i de dos tàxons morfològicament pròxims. Es comparen trets reproductius de la nova notoespecie referits a !'involucre i al pol·len amb els de C. x pouzinii De. Es proposa una nova notosecció Calciseridia R. Roselló et al., nothosect. nov.A new hybrid of the genus Centaurea L. (Asteraceae), coming from the cross between C. aspera L. and C. bofilliana Sennen ex Devesa & E. López, C. x sanchisiana, nothosp. nov., and two new nothovarieties, var. ma/varosae and varo pectiniformis are described. These hybrids were found respectively in Alatoz and Casas de Ves (Albacete, Spain), and Borriana (Castellón, Spain). The plant descriptions and diagnosis, as well as iconography and the table showing the main diagnostic characters to distinguish them from both parentals and two morphologycally similar taxa are provided. New nothospecies's reproductive traits related to the involucre and pollen are compared with those of C. x pouzinii De. A new nothosection Calciseridia R. Roselló et al., nothosect. nov., is proposed

Taxonomical and nomenclatural notes in the genus Cheirolophus Cass. (Asteraceae, Centaureinae)

Es lectotipifica i es reivindica el valor taxonòmic de Cheirolophus cavanillesianus nomo nov. [Centaurea virgata Cav., sinònim reemplaçat, syn. subst.) (Asteraceae, Centaureinae), espècie descrita per A. J. Cavanilles el 1795 per a la província d'Alacant. Dins d'aquest taxon, incloem a nivell subespecífic la varietat capillifolius [Ch. cavanillesianus subsp. capillifolius, combo & stat. nov.), taxon indicat per a diverses localitats de la província d'Alacant. Així mateix, es realitza la lectotipificació de Ch. intybaceus (Lam.) Dostál.We propose the lectotypification as well as the taxonomic value for Cheirolophus cavanillesianus nomo nov. [Centaurea virgata Cav., replaced synonym, syn. subst.) (Asteraceae, Centaureinae), a plant species described by A. J. Cavanilles in 1795 for the province of Alicante. Within this taxon we raise up to the subspecies level the variety capillifolius [Ch. cavanillesianus subsp. capillifolius, combo & stat. nov.), taxa indicated for sorne populations of the Alicante coast. Moreover, Ch. intybaceus (Lam.) Dostál has also been lectotypified

A new terophytic grassland association (Polycarpo diphylli-Psiluretum incurvi, ass. nova) from Serra d'Espadà and surroundings is proposed (Castelló, Spain)

Es proposa un nou pradell terofític, l'associació Polycarpo diphylli-Psiluretum incurvi R. Roselló, J. R, Vázquez, P. P. Ferrer, E. Laguna, Gómez Nav. & J. B. Peris, pertanyent a l'aliança Brachypodietalia distachyi (classe Tuberarietea guttatae), emplaçat al Parc Natural de la Serra d'Espadà i els seus voltants (Castelló, Espanya).A new terophytic grassland association Polycarpo diphylli-Psiluretum incurvi R. Roselló, J. R. Vázquez, P. P. Ferrer, E. Laguna, Gómez Nav. & J. B. Peris, belonging to the alliance Brachypodietalia distachyi (Tuberarietea guttatae class) is proposed, occurring in the Natural Park Serra d'Espadà and its surroundings (Castellón, Spain)

Transiting exoplanets from the CoRoT space mission VIII. CoRoT-7b: the first Super-Earth with measured radius

We report the discovery of very shallow (DF/F = 3.4 10-4), periodic dips in the light curve of an active V = 11.7 G9V star observed by the CoRoT satellite, which we interpret as due to the presence of a transiting companion. We describe the 3-colour CoRoT data and complementary ground-based observations that support the planetary nature of the companion. Methods. We use CoRoT color information, good angular resolution ground-based photometric observations in- and out- of transit, adaptive optics imaging, near-infrared spectroscopy and preliminary results from Radial Velocity measurements, to test the diluted eclipsing binary scenarios. The parameters of the host star are derived from optical spectra, which were then combined with the CoRoT light curve to derive parameters of the companion. We examine carefully all conceivable cases of false positives, and all tests performed support the planetary hypothesis. Blends with separation larger than 0.40 arcsec or triple systems are almost excluded with a 8 10-4 risk left. We conclude that, as far as we have been exhaustive, we have discovered a planetary companion, named CoRoT-7b, for which we derive a period of 0.853 59 +/- 3 10-5 day and a radius of Rp = 1.68 +/- 0.09 REarth. Analysis of preliminary radial velocity data yields an upper limit of 21 MEarth for the companion mass, supporting the finding. CoRoT-7b is very likely the first Super-Earth with a measured radius.Comment: Accepted in Astronomy and Astrophysics; typos and language corrections; version sent to the printer w few upgrade

Rifabutin for the treatment of helicobacter pylori infection: A review

Nowadays, apart from having to know first-line Helicobacter pylori eradication regimens well, we must also be prepared to face treatment failures. The aim of this review is to summarize the role of rifabutin in the management of H. pylori infection. Bibliographical searches were performed in PubMed. Data on resistance and efficacy of rifabutin-containing regimens on H. pylori eradication were meta-analyzed. Mean H. pylori rifabutin resistance rate (39 studies, including 9721 patients) was 0.13%; when studies only including patients naïve to H. pylori eradication treatment were considered, this figure was even lower (0.07%). Mean H. pylori eradication rate (by intention-totreat) with rifabutin-containing regimens (3052 patients) was 73%. Respective cure rates for second-, third-, fourth-and fifth-line therapies, were 79%, 69%, 69% and 72%. Most studies administered rifabutin 300 mg/day, which seemed to be more effective than 150 mg/day. The ideal length of treatment remains unclear, but 10–12-day regimens are generally recommended. Adverse events to rifabutin treatment in H. pylori studies were relatively infrequent (15%), and severe adverse events were exceptional (myelotoxicity was the most significant, although always reversible). In summary, rifabutin-containing therapy represents an encouraging strategy generally restricted, at present, to patients where previous (usually multiple) eradication regimens have failed