Coleopterans associated with plants that form phytotelmata in subtropical and temperate Argentina, South America

A list of the most common plants that form phytotelmata and their associated coleopterans (aquatic, semi-aquatic and terrestrial) from the northeastern subtropical and temperate area of Argentina, South America with biological and behavioral observations is presented in this study. Species of Poaceae (n = 3), Bromeliaceae (5), Apiaceae (6), Araceae (2), Urticaceae (1), Marantaceae (1), Arecaceae (1), Dipsacaceae (1) and Cyperaceae (1) were identified as phytotelmata. Aquatic species of Scirtidae (2), Dytiscidae (2), and Hydrophilidae (4), semi-aquatic Chelonariidae (2), and terrestrial species of Carabidae (3), Staphylinidae (5), Histeridae (1), Elateridae (1), Cantharidae (1), Cleridae (1), Tenebrionidae (1), Meloidae (1), Anthicidae (1), Chrysomelidae (3), Curculionidae (7) and Apionidae (1) were identified from six species of Eryngium L. (Apiales: Apiaceae), two species of Guadua Kunth (Poales: Poaceae), Aechmea distichantha Lemaire (Poales: Bromeliaceae), and from fallen leaves of Euterpe edulis Martius (Arecales: Arecaceae) from the temperate and subtropical area. The highest species richness was recorded in Eryngium phytotelmata. Fifteen species of beetles inhabit Eryngium cabrerae Pontiroli, 11 in E. horridum Malme, 7 in E. stenophyllum Urban, 4 in E. aff. serra Chamisso and Schlechtendal., 3 in E. elegans Chamisso and Schlechtendal, 2 in E. eburneum Decne and E. pandanifolium Chamisso and Schlechtendal. From bamboo, 6 species of coleopterans were collected from Guadua trinii (Nees) Nees ex Ruprecht and 4 from G. chacoensis (Rojas) Londoño and Peterson. Three species of aquatic coleopterans were recorded from A. distichantha and only one from E. edulis.Instituto de Limnología "Dr. Raul A. Ringuelet

Coleopterans Associated with Plants that form Phytotelmata in Subtropical and Temperate Argentina, South America

A list of the most common plants that form phytotelmata and their associated coleopterans (aquatic, semi-aquatic and terrestrial) from the northeastern subtropical and temperate area of Argentina, South America with biological and behavioral observations is presented in this study. Species of Poaceae (n = 3), Bromeliaceae (5), Apiaceae (6), Araceae (2), Urticaceae (1), Marantaceae (1), Arecaceae (1), Dipsacaceae (1) and Cyperaceae (1) were identified as phytotelmata. Aquatic species of Scirtidae (2), Dytiscidae (2), and Hydrophilidae (4), semi-aquatic Chelonariidae (2), and terrestrial species of Carabidae (3), Staphylinidae (5), Histeridae (1), Elateridae (1), Cantharidae (1), Cleridae (1), Tenebrionidae (1), Meloidae (1), Anthicidae (1), Chrysomelidae (3), Curculionidae (7) and Apionidae (1) were identified from six species of Eryngium L. (Apiales: Apiaceae), two species of Guadua Kunth (Poales: Poaceae), Aechmea distichantha Lemaire (Poales: Bromeliaceae), and from fallen leaves of Euterpe edulis Martius (Arecales: Arecaceae) from the temperate and subtropical area. The highest species richness was recorded in Eryngium phytotelmata. Fifteen species of beetles inhabit Eryngium cabrerae Pontiroli, 11 in E. horridum Malme, 7 in E. stenophyllum Urban, 4 in E. aff. serra Chamisso and Schlechtendal., 3 in E. elegans Chamisso and Schlechtendal, 2 in E. eburneum Decne and E. pandanifolium Chamisso and Schlechtendal. From bamboo, 6 species of coleopterans were collected from Guadua trinii (Nees) Nees ex Ruprecht and 4 from G. chacoensis (Rojas) Londoño and Peterson. Three species of aquatic coleopterans were recorded from A. distichantha and only one from E. edulis

Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics

The reduction of turbulent transport across sheared flow regions has been known for a long time in magnetically confined toroidal plasmas. However, details of the dynamics are still unclear, in particular, in what refers to the changes caused by the flow on the nature of radial transport itself. In Paper II, we have shown in a simplified model of drift wave turbulence that, when the background profile is allowed to evolve self-consistently with fluctuations, a variety of transport regimes ranging from superdiffusive to subdiffusive open up depending on the properties of the underlying turbulence [D. Ogata et al., Phys. Plasmas 24, 052307 (2017)]. In this paper, we show that externally applied sheared flows can, under the proper conditions, cause the transport dynamics to be diffusive or subdiffusive.This work was supported by U.S. DOE Contract No. DE-FG02-04ER54741 with the University of Alaska Fairbanks and in part by a grant of HPC resources from the Arctic Region Supercomputing Center at the University of Alaska Fairbanks. This research was also sponsored in part by DGICYT (Dirección General de Investigaciones Científicas y Tecnológicas) of Spain under Project No. ENE2015-68265

La Controversia Marítima entre Perú y Chile: Análisis de los Principales Conceptos Jurídicos de la Sentencia de la Corte Internacional de Justicia

La presente tesis estudia dos conceptos jurídicos que se encuentran en la sentencia de la Corte Internacional de Justicia sobre el caso Perú-Chile, emitida en 2014: el “Acuerdo Tácito” y la “Equidad”. Ambos conceptos fueron determinantes y utilizados por los jueces de la Corte para delimitar la frontera marítima entre ambos países. Sin embargo, mientras uno de ellos -la equidad- es un principio plenamente aceptado en el Derecho Internacional Público y aplicado con frecuencia en los casos que ve el alto tribunal; el otro es novedoso e incluso polémico en la doctrina, además de no tener antecedentes en la jurisprudencia internacional, constituyendo un concepto que se aplica por vez primera para resolver una controversia de límites marinos entre dos Estados. Palabras clave: Controversia, Sentencia, Acuerdo Tácito, Equidad, Equidistancia

Geology and geochemistry of alkaline basic bodies from south of Colhué Huapí and Musters lakes, Gulf of San Jorge Basin, Chubut

En la región de los lagos Colhué Huapí y Musters, situada en la sierra de San Bernardo en el centro sur de la provincia del Chubut, afloran cuerpos ígneos básicos de carácter alcalino con estructuras de stocks, sills, lopolitos y diques, con edades comprendidas entre el Eoceno y Pleistoceno. En este trabajo, se presentan los resultados obtenidos del estudio efectuado en los cerros Negro, Cresta-Puricelli, Guacho, Solo, San Bernardo, Cresta-Trompete y Los Leones-Tumba del Indio, todos ellos localizados al sur de la localidad de Sarmiento. La litología identificada corresponde a gabro, monzogabro nefelínico, sienita nefelínica, basalto y basanita, siendo el gabro la variedad predominante. De acuerdo a la forma, el tamaño, los gradientes texturales y la presencia de zeolitas que presentan los cuerpos intrusivos, se considera que éstos se emplazaron en niveles corticales altos (<1 km). La mayoría de las rocas analizadas son básicas con un porcentaje de SiO2 entre 44 y 48 %, y se caracterizan por el alto contenido en Fe2O3 (10,66-14,67 %), TiO2 (1,23-3,37 %) y álcalis (3,35-5,91 %). Los diagramas normalizados tienen el diseño típico de basaltos alcalinos de intraplaca, compatibles con una fuente de tipo OIB enriquecida en elementos incompatibles, con residuo granatífero en la fuente y ausencia de contaminación con la placa subducida o cortical. La pendiente pronunciada de la curva normalizada de REE (La/Yb = 10,2-22,4) señala relativamente bajos grados de fusión parcial. A partir del análisis estructural se plantea un ambiente extensional para el emplazamiento de estos cuerpos que es coherente con lo que indican las características geoquímicas.In the region of Colhué Huapí and Musters lakes, south central province of Chubut, crop out Eocene-Pleistocene igneous alkaline basic bodies which corresponds to stocks, sills, lopoliths and dikes structures. In this paper, we present the results of the survey conducted in the Cerros Negro, Cresta-Puricelli, Guacho, Solo, San Bernardo, Cresta-Leones-Trompete and Tumba del Indio, located south of Sarmiento town. Lithological and textural varieties allowed to classify the rocks as gabbro, nepheline monzogabbro, nepheline syenite, basalt and basanite, being gabbro the predominant variety. On the basis of their shape and size, the presence of textural gradients and zeolites among others, the outcrops studied were characterized as intrusives bodies emplaced at high crustal levels (< 1 km). Most of the analyzed samples are basic with a SiO2 content between 44 % and 48 %. They are characterized by the high Fe2O3 (10.66-14.67 %), TiO2 (1.23-3.37) and alkalis (3.35-5.91 %) content. The patterns of the normalized diagrams are typical of intraplate alkaline basalts compatible with an OIB type with garnet present source without subducted plate or crustal contamination. The steep slope of the normalized REE (La/Yb = 10.2- 22.4) points out relatively low degrees of partial melting. An extensional environment for the emplacement of these bodies is suggested by the structural analysis which is coherent with the geochemical characteristics.Fil: Menegatti, Nilda D.. Universidad Nacional de la Patagonia San Juan Bosco, Departamento de Geología. Comodoro Rivadavia; ArgentinaFil: Massaferro, Gabriela Isabel. Universidad Nacional de la Patagonia San Juan Bosco, Departamento de Geología. Puerto Madryn; ArgentinaFil: Fernández, María Isabel. Universidad Nacional de la Patagonia San Juan Bosco, Departamento de Geología. Comodoro Rivadavia; ArgentinaFil: Giacosa, Raúl E.. Secretaría de Industria y Minería. Servicio Geologico Minero Argentino; Argentina. Universidad Nacional de Rio Negro; Argentin

BCYCLIC: A parallel block tridiagonal matrix cyclic solver

13 pages, 6 figures.A block tridiagonal matrix is factored with minimal fill-in using a cyclic reduction algorithm that is easily parallelized. Storage of the factored blocks allows the application of the inverse to multiple right-hand sides which may not be known at factorization time. Scalability with the number of block rows is achieved with cyclic reduction, while scalability with the block size is achieved using multithreaded routines (OpenMP, GotoBLAS) for block matrix manipulation. This dual scalability is a noteworthy feature of this new solver, as well as its ability to efficiently handle arbitrary (non-powers-of-2) block row and processor numbers. Comparison with a state-of-the art parallel sparse solver is presented. It is expected that this new solver will allow many physical applications to optimally use the parallel resources on current supercomputers. Example usage of the solver in magneto-hydrodynamic (MHD), three-dimensional equilibrium solvers for high-temperature fusion plasmas is cited.This research has been sponsored by the US Department of Energy under Contract DE-AC05-00OR22725 with UT-Battelle, LLC. This research used resources of the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of the Department of Energy under Contract DE-AC05-00OR22725.Publicad

Coleopterans associated with plants that form phytotelmata in subtropical and temperate Argentina, South America

A list of the most common plants that form phytotelmata and their associated coleopterans (aquatic, semi-aquatic and terrestrial) from the northeastern subtropical and temperate area of Argentina, South America with biological and behavioral observations is presented in this study. Species of Poaceae (n = 3), Bromeliaceae (5), Apiaceae (6), Araceae (2), Urticaceae (1), Marantaceae (1), Arecaceae (1), Dipsacaceae (1) and Cyperaceae (1) were identified as phytotelmata. Aquatic species of Scirtidae (2), Dytiscidae (2), and Hydrophilidae (4), semi-aquatic Chelonariidae (2), and terrestrial species of Carabidae (3), Staphylinidae (5), Histeridae (1), Elateridae (1), Cantharidae (1), Cleridae (1), Tenebrionidae (1), Meloidae (1), Anthicidae (1), Chrysomelidae (3), Curculionidae (7) and Apionidae (1) were identified from six species of Eryngium L. (Apiales: Apiaceae), two species of Guadua Kunth (Poales: Poaceae), Aechmea distichantha Lemaire (Poales: Bromeliaceae), and from fallen leaves of Euterpe edulis Martius (Arecales: Arecaceae) from the temperate and subtropical area. The highest species richness was recorded in Eryngium phytotelmata. Fifteen species of beetles inhabit Eryngium cabrerae Pontiroli, 11 in E. horridum Malme, 7 in E. stenophyllum Urban, 4 in E. aff. serra Chamisso and Schlechtendal., 3 in E. elegans Chamisso and Schlechtendal, 2 in E. eburneum Decne and E. pandanifolium Chamisso and Schlechtendal. From bamboo, 6 species of coleopterans were collected from Guadua trinii (Nees) Nees ex Ruprecht and 4 from G. chacoensis (Rojas) Londoño and Peterson. Three species of aquatic coleopterans were recorded from A. distichantha and only one from E. edulis.Instituto de Limnología "Dr. Raul A. Ringuelet

Correlation between Ct-values and symptoms of COVID-19 patients

Background: Currently available RT-PCR methods for the diagnosis of COVID-19 can give an estimate of the viral load. The cycle threshold value (Ct-value) of the PCR correlates inversely with the viral load; low Ct-values indicate high viral loads and vice versa. Higher viral loads have been seen to correlate with disease severity and infectivity. Therefore, we studied the correlation of the Ct-value of RT-PCR and the most common symptoms of COVID-19 individually. Methods: A prospective and descriptive study was carried out with the subjects that attended our laboratory for a COVID-19 test from September 14, 2020, to January 30, 2021. Subjects filled out a questionnaire with demographic and clinical information prior to taking the naso and oropharyngeal samples. The samples were processed by Vircell SARS-CoV-2 Real-time PCR Kit (Granada, Spain). Statistical analyses were performed using IBM SPSS software. Results: We included 657 positive subjects with complete information, with a median age of 36 (27-47) and a male predominance of 477 (72.6%). Of these, 395 (60.1%) were symptomatic and the median number of symptoms was 2 (0-5). The most predominant symptoms were headache 271 (68.6%), cough 229 (58%), and myalgias 180 (45.6%). The median Ct-value for gene N was 30 (23-36) and for gene E was 31 (23-35). In comparison between symptomatic and asymptomatic subjects, asymptomatic patients had a higher Ct-value (lower viral load) in both genes and a lower age (p Conclusions: The viral load correlates with symptoms within COVID-19, having found that higher viral loads were correlated with symptoms such as headache, cough, and fever, while lower viral loads were correlated with dyspnea, diarrhea, and alterations of smell or taste senses

Insights into coacervative and dispersive liquid-phase microextraction strategies with hydrophilic media - a review

Since the development of liquid-phase microextraction (LPME), different LPME modes depending on the experimental set-up to carry out the extraction have been described. Dispersive liquid-liquid microextraction (DLLME), in which a small amount of the water-insoluble extraction solvent is dispersed in the sample, is the most successful mode in terms of number of applications reported. Advances within DLLME have been mainly shifted to the incorporation of green, smart and tunable materials as extraction solvents to improve the sustainability and efficiency of the method. In this sense, hydrophilic media represent a promising alternative since the water-miscibility of these substances increases the mass transfer of the analytes to the extraction media, leading to higher extraction efficiencies. Considering the variety of hydrophilic media that have been incorporated in LPME approaches resembling DLLME, this review aims to classify these methods in order to clarify the confusing terminology used for some of the strategies. Hydrophilic media covered in this review comprise surfactants, polar organic solvents, deep eutectic solvents, ionic liquids, water-miscible polymers, and switchable solvents. Different physicochemical mechanisms of phase separation are discussed for each LPME method, including the coacervation phenomena and other driving forces, such as pH, temperature, salting-out effect, metathesis reaction and organic solvents. LPME modes are classified (in cloud-point extraction, coacervative extraction, aqueous biphasic systems, and different DLLME modes depending on the extraction medium) according to both the nature of the water-miscible extraction phase and the driving force of the separation. In addition, the main advances and analytical applications of these methods in the last three years are described.publishe

Geochemical Anomalies in Soils and Surface Waters in an Area Adjacent to a Long-Used Controlled Municipal Landfill

Municipal landfills, even when controlled, are potential sources of soil and water pollution in surrounding areas, due to the migration of pollutants through water and air. This research assesses geochemical anomalies of heavy elements and rare earth elements in soils and surface waters in an adjacent area to a controlled municipal landfill near Madrid (Central Spain), under long-term operation. Twenty soil and eighteen water samples were collected in 2017 and 2018 and analyzed for this purpose. Spatial distribution and concentrations of heavy elements (Ag, Cd, Cu, Mn, Ni, Pb, Tl, and Zn) and rare Earth elements (La, Ce, and Gd) are heterogeneous and significantly higher than soil background levels, but below the legal limits to consider intervention. Accumulation of heavy and rare Earth elements in soil nearest the landfill is attributed to occur via wind and wind-driven rain transport, while their accumulation in sediments is attributed to water transport through the creeks. Surface waters show large contamination by organic and inorganic compounds and influence geochemical anomalies in sediments. The water quality is below allowable concentrations for drinking water. The combined evaluation of the soil and water samples performed in the present work is proposed as a pilot study that may be applicable to similar surrounding landfill areas worldwideThe work has been partially financed by the Faculty of Sciences of the Autonomous University of Madrid