Primera cita de Mauremys leprosa (Sauropsida: Testudines) a Sant Mateu del Maestrat

La tortuga de rierol, Mauremys leprosa (Scheigger, 1812), és citada per primer cop a Sant Mateu del Maestrat (el Baix Maestrat). Es fa una primera valoració de l'estat de la població, que es considera bona, amb una estructura d'edat normal i amb abundants exemplars juvenils que asseguren el reemplaçament. No s'han observat altres torugues d'aigua a la zona.First record of the Mauremys leprosa (Sauropsida: Testudines) in Sant Mateu del Maestrat.Terrapin, Mauremys leprosa (Schegger, 1812), is mentioned for the first time in Sant Mateu del Maestrat (el Baix Maestrat, Spain). A first assessment of he state of the population is made. That is considered good, with a natural age structure and abundant young speciments that ensure replacement. No other turtles were observed in the are

First record of the Mauremys leprosa (Sauropsida: Testudines) in Sant Mateu del Maestrat

La tortuga de rierol, Mauremys leprosa (Scheigger, 1812), és citada per primer cop a Sant Mateu del Maestrat (el Baix Maestrat). Es fa una primera valoració de l’estat de la població, que es considera bona, amb una estructura d’edat normal i amb abundants exemplars juvenils que asseguren el reemplaçament. No s’han observat altres tortugues d’aigua a la zona.Terrapin, Mauremys leprosa (Scheigger, 1812), is mentioned for the first time in Sant Mateu del Maestrat (el Baix Maestrat, Spain). A first assessment of the state of the population is made. That is considered good, with a natural age structure and abundant young specimens that ensure replacement. No other turtles were observed in the area

A compactness theorem for scalar-flat metrics on manifolds with boundary

Let (M,g) be a compact Riemannian manifold with boundary. This paper is concerned with the set of scalar-flat metrics which are in the conformal class of g and have the boundary as a constant mean curvature hypersurface. We prove that this set is compact for dimensions greater than or equal to 7 under the generic condition that the trace-free 2nd fundamental form of the boundary is nonzero everywhere.Comment: 49 pages. Final version, to appear in Calc. Var. Partial Differential Equation

Using Rapidity Gaps to Distinguish Between Higgs Production by W and Gluon Fusion

The possibility of distinguishing between two higgs production mechanisms, W fusion and gluon fusion, is investigated using the Monte Carlo event generator PYTHIA. It is shown that, considering the designed CM energy and luminosity for the LHC, it is not possible to distinguish between the two higgs production processes as, for a given integrated luminosity, they lead to the same number of events containing a rapidity gap.Comment: uudecoded compressed tar file containing a tex file and 6 figure files. Two more figures, avaiable from the authors upon reques

Bilepton contributions to the neutrinoless double beta decay in the economical 3-3-1 model

Possible contributions of the bilepton to the neutrinoless double beta $(\beta\beta)_{0\nu}$ decay in the economical 3-3-1 model are discussed. We show that the $(\beta\beta)_{0\nu}$ decay in this model is due to both sources--Majorana $_{L}$ and Dirac $_{D}$ neutrino masses. If the mixing angle between charged gauge bosons, the standard model $W$ and bilepton $Y$, is in range of the ratio of neutrino masses $_{L}/< M_{\nu}>_{D}$, both the Majorana and Dirac masses simultaneously give contributions dominant to the decay. As results, constraints on the bilepton mass are also given.Comment: 9 pages, 6 figure

Spontaneous breaking of a global symmetry in a 331 model

In a 331 model in which the lepton masses arise from a scalar sextet it is possible to break spontaneously a global symmetry implying in a pseudoscalar majoron-like Goldstone boson. This majoron does not mix with any other scalar fields and for this reason it does not couple, at the tree level, neither to the charged leptons nor to the quarks. Moreover, its interaction with neutrinos is diagonal. We also argue that there is a set of the parameters in which that the model can be consistent with the invisible Z^0-width and that heavy neutrinos can decay sufficiently rapid by majoron emission having a lifetime shorter than the age of the universe.Comment: RevTex, 10 pages, one .eps figur

Dual-Functional Phosphorene Nanocomposite Membranes for the Treatment of Perfluorinated Water: An Investigation of Perfluorooctanoic Acid Removal via Filtration Combined with Ultraviolet Irradiation or Oxygenation

Nanomaterials with tunable properties show promise because of their size-dependent electronic structure and controllable physical properties. The purpose of this research was to develop and validate environmentally safe nanomaterial-based approach for treatment of drinking water including removal and degradation of per- and polyfluorinated chemicals (PFAS). PFAS are surfactant chemicals with broad uses that are now recognized as contaminants with a significant risk to human health. They are commonly used in household and industrial products. They are extremely persistent in the environment because they possess both hydrophobic fluorine-saturated carbon chains and hydrophilic functional groups, along with being oleophobic. Traditional drinking water treatment technologies are usually ineffective for the removal of PFAS from contaminated waters, because they are normally present in exiguous concentrations and have unique properties that make them persistent. Therefore, there is a critical need for safe and efficient remediation methods for PFAS, particularly in drinking water. The proposed novel approach has also a potential application for decreasing PFAS background levels in analytical systems. In this study, nanocomposite membranes composed of sulfonated poly ether ether ketone (SPEEK) and two-dimensional phosphorene were fabricated, and they obtained on average 99% rejection of perfluorooctanoic acid (PFOA) alongside with a 99% removal from the PFOA that accumulated on surface of the membrane. The removal of PFOA accumulated on the membrane surface achieved 99% after the membranes were treated with ultraviolet (UV) photolysis and liquid aerobic oxidation