Search results for "TPS"
showing 10 items of 425 documents
Current and emerging developments in subseasonal to decadal prediction
2020
Weather and climate variations on subseasonal to decadal time scales can have enormous social, economic, and environmental impacts, making skillful predictions on these time scales a valuable tool for decision-makers. As such, there is a growing interest in the scientific, operational, and applications communities in developing forecasts to improve our foreknowledge of extreme events. On subseasonal to seasonal (S2S) time scales, these include high-impact meteorological events such as tropical cyclones, extratropical storms, floods, droughts, and heat and cold waves. On seasonal to decadal (S2D) time scales, while the focus broadly remains similar (e.g., on precipitation, surface and upper-…
The Messinian stromatolites of the Sierra del Colmenar (Western Mediterranean): facies characterization and sedimentological interpretation
2018
A representative outcrop of the Messinian stromatolites belonging to the Terminal Carbonate Complex unit, from the northern sector of the Bajo Segura basin (Caja de Ahorros del Mediterraneo section, Sierra del Colmenar, SE Spain) has been studied. Here, we present a detailed analysis of the architecture, external morphology, and internal morphology in order to reconstruct the environmental and palaeoecological conditions for their growth. The stromatolites macrostructure consists of a continuously doming type morphology (build up and sheets areas).These developed close to the coast and acted as a palaeogeographic barrier, reducing physical stress, channeling the erosive effect of water and …
Global variability in seawater Mg:Ca and Sr:Ca ratios in the modern ocean
2020
12 pages, 5 figures, supporting information https://doi.org/10.1073/pnas.1918943117.-- Data Availability. Our published databases are publicly accessible for readers, and they are deposited at the NOAA NCEI at https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0171017.-- Correction for Lebrato et al., Global variability in seawater Mg:Ca and Sr:Ca ratios in the modern ocean; Proceedings of the National Academy of Sciences of the USA 118(49): e2119099118 (2021); doi: 10.1073/pnas.2119099118; http://hdl.handle.net/10261/258054.-- This is Pacific Marine Environmental Laboratory contribution number 5046
Saccharomyces eubayanusandSaccharomyces uvarumassociated with the fermentation ofAraucaria araucanaseeds in Patagonia
2014
Mudai is a traditional fermented beverage, made from the seeds of the Araucaria araucana tree by Mapuche communities. The main goal of the present study was to identify and characterize the yeast microbiota responsible of Mudai fermentation as well as from A. araucana seeds and bark from different locations in Northern Patagonia. Only Hanseniaspora uvarum and a commercial bakery strain of Saccharomyces cerevisiae were isolated from Mudai and all Saccharomyces isolates recovered from A. araucana seed and bark samples belonged to the cryotolerant species Saccharomyces eubayanus and Saccharomyces uvarum. These two species were already reported in Nothofagus trees from Patagonia; however, this …
Natural products for the treatment of Type 2 Diabetes Mellitus
2015
Type 2 diabetes mellitus is a metabolic disease characterized by persistent hyperglycemia. High blood sugar can produce long-term complications such as cardiovascular and renal disorders, retinopathy, and poor blood flow. Its development can be prevented or delayed in people with impaired glucose tolerance by implementing lifestyle changes or the use of therapeutic agents. Some of these drugs have been obtained from plants or have a microbial origin, such as galegine isolated from Galega officinalis, which has a great similarity to the antidiabetic drug metformin. Picnogenol, acarbose, miglitol, and voglibose are other antidiabetic products of natural origin. This review compiles the princi…
Tailoring the Exchange Interaction in Covalently Linked Basic Carboxylate Clusters through Bridging Ligand Selection
2012
We are reporting new dimeric units of basic carboxylates bearing the {Fe III 2M IIO} motif for M = Co and Ni, covalently bound through the tetradentate bridging (LL) 2,2′-azopyiridine (azpy) and 2,3-di(2-pyridyl)quinoxaline ligands (dpq). We structurally characterized the hexanuclear clusters, and their magnetic properties have been fully analyzed. DFT calculations have been performed as a supplementary tool. All results evidence a weak antiferromagnetic interaction through the bridging ligands between isolated spin ground states arising from intra-Fe 2MO core exchange couplings. Together with the pioneer 2,2′-bipyrimidine bridged systems, the new complexes reported constitute a family of c…
Defense Responses in Two Ecotypes of Lotus japonicus against Non-Pathogenic Pseudomonas syringae
2013
Lotus japonicus is a model legume broadly used to study many important processes as nitrogen fixing nodule formation and adaptation to salt stress. However, no studies on the defense responses occurring in this species against invading microorganisms have been carried out at the present. Understanding how this model plant protects itself against pathogens will certainly help to develop more tolerant cultivars in economically important Lotus species as well as in other legumes. In order to uncover the most important defense mechanisms activated upon bacterial attack, we explored in this work the main responses occurring in the phenotypically contrasting ecotypes MG-20 and Gifu B-129 of L. ja…
A typology of cases to teach the model of evolution by natural selection
2018
La enseñanza de todo contenido requiere utilizar casos o ejemplos concretos que sirvan deproblemas que den sentido a la construcción de modelos cercanos a los científicos. Existen diversos criteriospara la selección de dichos casos. En este trabajo se presentan los fundamentos de una propuesta para laselección de casos para la enseñanza del modelo de evolución por selección natural. Esta propuesta se basaen la interacción entre dichos casos y las concepciones y obstáculos epistemológicos de los estudiantes. Cadacategoría de casos propuesta se define por las concepciones y obstáculos cuya explicitación y revisiónfacilita. Se sugiere también que la toma de conciencia sobre esas concepciones y…
Organizational Virtues, Performance and Job Satisfaction. Differences according individual and organizational factors in Argentinean employees
2017
El presente trabajo se basa en las propuestas de la Psicología Organizacional Positiva (POP) que intenta integrar a la mirada clásica de estudios organizacionales –que se focaliza en analizar condiciones negativas–, una perspectiva que visualice variables positivas que contribuyan a obtener resultados óptimos (Cameron & Spreitzer, 2012). Se planteó como objetivo analizar si existen diferencias en las virtudes nivel organizacional (Apoyo y respeto, Significado e inspiración, Perdón) según variables individuales (e.g. personal a cargo) y organizacionales (e.g. tamaño y tipo de empresa). Asimismo, se buscó establecer si existe relación entre dichas virtudes y medidas resultado (performance org…
Positive organization profiles. Analysis of perceived characteristics according to individual, organizational, and outcome variables
2016
En el presente estudio se analizan perfiles de organizaciones a partir de las percepciones de empleados/as con respecto a las características de sus lugares de trabajo. La muestra estuvo compuesta por 459 empleados/as argentinos (232 hombres); edad promedio: 36,3 años (DT = 11,7); pertenecientes a empresas públicas (17,2%, n = 79) y privadas (82,6%, n = 379). La mayoría residía en ciudad de Buenos Aires y alrededores (96,5%, n = 443). Para la recogida de datos se empleó un protocolo en el que se solicitaba que se enunciasen características positivas y negativas que asocian a la organización en la que trabajan. Se efectuó un análisis de contenido de las respuestas dadas por los participantes…