Search Results Heading

MBRLSearchResults

mbrl.module.common.modules.added.book.to.shelf
Title added to your shelf!
View what I already have on My Shelf.
Oops! Something went wrong.
Oops! Something went wrong.
While trying to add the title to your shelf something went wrong :( Kindly try again later!
Are you sure you want to remove the book from the shelf?
Oops! Something went wrong.
Oops! Something went wrong.
While trying to remove the title from your shelf something went wrong :( Kindly try again later!
    Done
    Filters
    Reset
  • Discipline
      Discipline
      Clear All
      Discipline
  • Is Peer Reviewed
      Is Peer Reviewed
      Clear All
      Is Peer Reviewed
  • Item Type
      Item Type
      Clear All
      Item Type
  • Subject
      Subject
      Clear All
      Subject
  • Year
      Year
      Clear All
      From:
      -
      To:
  • More Filters
      More Filters
      Clear All
      More Filters
      Source
    • Language
2,477 result(s) for "hierro"
Sort by:
Molecular Detection of Histoplasma in Bat-Inhabited Tunnels of Camino de Hierro Tourist Route, Spain
We detected Histoplasma capsulatum in 2 bat-inhabited tunnels of a tourist route in northern Spain. This finding confirms that the geographic distribution of this fungal pathogen is wider than previously thought. Our results highlight the need for surveillance and assessment of the potential infection risk for workers and visitors.
Dosis única intravenosa de hierro carboximaltosa como causa de hipofosfatemia grave de etiología desconocida
La suplementación férrica intravenosa con carboximaltosa representa una nueva estrategia, para el tratamiento de estados ferropénicos, con la ventaja de la administración en una simple dosis una alta cantidad de hierro elemento, y evitando efectos secundarios como hipersensibilidad. Sin embargo, la hipofosfatemia, un efecto secundario asociado al uso crónico de preparados férricos intravenosos con carboximaltosa, representa una entidad emergente y una nueva etiología de hipofosfatemia que requiere sospecha diagnóstica, particularmente en pacientes que no se encuentran recibiendo terapias crónicas con este preparado férrico. Se presenta el caso de una paciente con hipofosfatemia, sin una causa clara que la justificara, en la que se comprobó la administración una semana antes de una dosis puntual de carboximaltosa.
Recuperación de hierro magnético contenidos en arenas de playa
La preconcentración implica descartar una fracción de la alimentación antes del procesamiento del mineral, para que contenga la menor o ninguna cantidad de mineral de interés. Con ello se reduce la masa a ser procesada en las operaciones posteriores, así como bajar los costos de capital y operación. Este estudio busca evaluar la posibilidad de obtener un beneficio a partir de muestras de arenas de playa mediante pruebas de separación gravitacional, para separar los minerales densos, seguido de una etapa de molienda y separación magnética en baja intensidad para concentrar la magnetita. La muestra analizada presenta minerales opacos como magnetita, ilmenita, rutilo, hematita, titanita y titano-magnetita. El análisis químico revela que la arena contiene 62,3% de SiO₂, 8,2% de CaO, 8,6% de Fe, 1,8% de K₂O, 2,0% de TiO₂ y 0,23% de P₂O₅. El tratamiento aplicado a la arena permitió recuperar un 39,3% de hierro magnético, con una ley de 56,6% y un 23,4% de TiO₂ con ley de 8,1%. Los resultados obtenidos indican que es posible descartar más del 64,7% de la ganga. Este estudio demuestra que los procesos de separación física permiten remediar arenas contaminadas, entregando un producto que puede ser rentable.  
Detectability of Seamount Eruptions Through a Quantum Technology Gravity Mission MOCAST+: Hunga Tonga, Fani Maoré and Other Smaller Eruptions
Seamount eruptions alter the bathymetry and can occur undetected due to lack of explosive character. We review documented eruptions to define whether they could be detected by a future satellite gravity mission. We adopt the noise level in acquisitions of multi-satellite constellations as in the MOCAST+ study, with a proposed payload of a quantum technology gradiometer and clock. The review of underwater volcanoes includes the Hunga Tonga Hunga Ha’apai (HTHH) islands for which the exposed surface changed during volcanic unrests of 2014/2015 and 2021/2022. The Fani Maoré submarine volcanic eruption of 2018–2021 produced a new seamount 800 m high, emerging from a depth of 3500 m, and therefore not seen above sea surface. We review further documented submarine eruptions and estimate the upper limit of the expected gravity changes. We find that a MOCAST+ type mission should allow us to detect the subsurface mass changes generated by deep ocean submarine volcanic activity for volume changes of 6.5 km3 upwards, with latency of 1 year. This change is met by the HTHH and Fani Maoré volcanoes.
Precursory diffuse CO2 and H2S emission signatures of the 2011-2012 El Hierro submarine eruption, Canary Islands
On October 12, 2011, a submarine eruption began 2 km off the coast of La Restinga, south of El Hierro Island. CO2 and H2S soil efflux were continuously measured during the period of volcanic unrest by using the accumulation chamber method at two different geochemical stations, HIE01 and HIE07. Recorded CO2 and H2S effluxes showed precursory signals that preceded the submarine eruption. Beginning in late August, the CO2 efflux time series started increasing at a relatively constant rate over one month, reaching a maximum of 19 gm−2d−1 one week before the onset of the submarine volcanic eruption. The H2S efflux time series at HIE07 showed a pulse in H2S emission just one day before the initiation of the submarine eruption, reaching peak values of 42 mg m−2 d−1, 10 times the average H2S efflux recorded during the observation period. Since CO2 and H2S effluxes are strongly influenced by external factors, we applied a multiple regression analysis to remove their contribution. A statistical analysis showed that the long‐term trend of the filtered data is well correlated with the seismic energy. We find that these geochemical stations are important monitoring sites for evaluating the volcanic activity of El Hierro and that they demonstrate the potential of applying continuous monitoring of soil CO2 and H2S efflux to improve and optimize the detection of early warning signals of future volcanic unrest episodes at El Hierro. Continuous diffuse degassing studies would likely prove useful for monitoring other volcanoes during unrest episodes. Key Points The finding of anomalous diffuse CO2 First time to observe a increasing on diffuse H2S emission
Evaluación de las características fisicoquímicas y sensoriales del pan de molde enriquecido con Kiwicha (Amaranthus caudatus L.) y Cañihua (Chenopodium pallidicaule Aellen)
El pan es un alimento de consumo masivo, que tiene como ingrediente básico al trigo; existen diversas formulaciones en la que incluyen harina de distintas fuentes de cereales. El objetivo de la investigación fue evaluar el efecto de la inclusión de Kiwicha (Amaranthus caudatus L.) y Cañihua (Chenopodium pallidicaule Aellen) en las características fisicoquímicas y sensoriales del pan de molde. La elaboración del pan de molde se desarrolló con el método de masa directa; la mezcla se realizó con diseño de mezclas simples y se seleccionaron solo las tres formulaciones con los contenidos más altos de proteínas, F1 (trigo, Kiwicha, Cañihua: 73 %, 17 %, 10 %); F2 (trigo, Kiwicha, Cañihua: 73 %, 20 %, 7 %) y F3 (trigo, Kiwicha, Cañihua: 70 %, 20 %, 10 %); se consideró como control F0: pan de molde elaborado con 100 % de harina de trigo. Las características fisicoquímicas se analizaron mediante diseño completo al azar (DCA), con prueba de Tukey (p ≤ 0,05) y las propiedades sensoriales se analizaron con la prueba de Friedman (p ≤ 0,05). Los resultados mostraron que las características fisicoquímicas fueron diferentes (p ≤ 0,05), a excepción del pH y acidez titulable. La formulación F3, reportó menor contenido de alanina y mayor cantidad leucina con 0,10 a 1,79 g de aminoácido (AA) por 100 g de proteína pura, determinada en (g/100 g de muestra original y factor 6,25), respectivamente. En la corteza de pan, el análisis de color L* fue mayor en la formulación F3 (50,0) (p ≤ 0,05) mientras que las otras formulaciones variaron F1 y F2. Sensorialmente, el tratamiento F0 tuvo mayor aceptabilidad, sin embargo, en los panes elaborados (F1, F2 y F3) se destaca el contenido de hierro, aminoácidos y macronutrientes. Se concluye que los panes elaborados con adición de Kiwicha y Cañihua a la formulación de la harina son una buena fuente de proteínas, hierro y aminoácidos.
Fíbulas de la región central de 'Hispania'. Algunos ejemplos hallados en yacimientos de Madrid, Toledo y Guadalajara
Este trabajo analiza una colección de fíbulas, carentes de contexto arqueológico, procedentes de diversos puntos de la región central de la península ibérica. A través de una metodología basada en la clasificación morfológica y la comparación tipológica, se han identificado ejemplares representativos de varios periodos, desde la Edad del Hierro hasta época altoimperial. Se documentan fíbulas de tipo Huelva, La Tène, Aucissa, Nauheim, de disco, de Alesia, de Iturissa y anulares hispánicas. Al no contar con un contexto estratigráfico, el énfasis se ha centrado en las propiedades técnicas y decorativas de cada objeto, respaldado por investigaciones tipológicas anteriores. This paper analyzes a collection of fibulae, deprived of any archaeological context, from different points of the central region of the Iberian Peninsula. Through a methodology based on morphological classification and typological comparison, representative specimens —Huelva, La Tène, Aucissa, Nauheim, disc, Alesia, Iturissa and Hispanic ring type fibulae— from the Iron Age to the Late Imperial period have been identified. Most of them had no precise stratigraphic context, which has motivated an approach focused on the technical and decorative characteristics of each piece, which have been complemented with previous typological studies.
Xenopumices from the 2011-2012 submarine eruption of El Hierro (Canary Islands, Spain): Constraints on the plumbing system and magma ascent
Textures, petrography and geochemical compositions of products emitted during the onset of the 2011–2012 submarine eruption (15 October, 2011) off the coast of El Hierro have been investigated to get information on interaction mechanism between the first rising magma and the crust during the onset of the eruption as well as to get information on magma storage and plumbing systems beneath El Hierro volcano. Studied products consist of 5–50 cm bombs with an outer black to greenish, vesicular crust with bulk basanite composition containing pumiceous xenoliths (xenopumices). Our results show that xenopumices are much more heterogeneous that previously observed, since consist of a macro‐scale mingling of a gray trachyte and white rhyolite. We interpreted xenopumices as resulting from the interaction (heating) between the basanitic magma feeding the eruption, a stagnant trachytic magma pocket/s and an associated hydrothermally altered halo with rhyolitic composition. Our findings confirm the importance of the study of the early products of an eruption since they can contain crucial information on the plumbing system geometry and the mechanism of magma ascent. Key Points The eruption started with the fast ascent of a basanitic magma from 12–14km At <4km the basanite heated a stagnant trachytic magma and its hydrothermal halo The study of xenoliths are crucial for unravelling the dynamics of magma ascent
Experimental determination of H ₂ O and CO ₂solubilities of mafic alkaline magmas from Canary Islands
We present new H2O and CO2 solubility data in mafic to intermediate alkaline magmas from Fasnia and Garachico volcanoes, Tenerife. H2O- and CO2-saturated experiments were conducted at∼ 50–400 MPa, 1200 °C, andf O2 from 2 log units below the NiNiO solid buffer to 3.2 log units above it. Although existing solubility models for alkali-rich mafic magmas broadly describe H2O and CO2 behaviour, associated errors are worthy of consideration since they usually exceed 15–20%. For this reason, we have determined the specific solubility laws of basanitic and phonotephritic melts from the Canary Islands. Results show similar H2O solubilities for both compositions, whereas the basanite can dissolve an average of∼ 45% more CO2 than the phonotephrite. By combining these data, we have established a simple empirical model that allows us to calculate melt inclusion entrapment pressures accurately and, therefore, better understand the inner workings of volcanic oceanic islands. Application to El Hierro 2011–2012 and young ( < 20 ka) basanites from this location shows that previous barometric estimates were, on average, overestimated by 15–28%. Our results suggest that magmas rising from depth experienced a first but short episode of equilibration at 8–10 km, whereas the bulk of the crystallization occurred during the subsequent dyke injection, ascent, and degassing atP ⇐ 200 \\mathrm{MPa}{}{(}6–1.5 km).
Hematological and iron status in female elite athlete players in Albania
Background: Iron and hematological condition are important markers of general health and athletic performance. Limited data on iron and hematological status in Albanian female athletes underscores the need for localized research for health monitoring and intervention strategies. Aim of the Study: The study evaluates the hematological and iron status of female elite athlete players in Albania, identifying deficiencies and underlying causes like inflammation and nutritional factors. Methodology: A study involving 33 female elite athletes in Albania collected blood samples for a cross-sectional descriptive study, including the summarized data, and independent t-tests compared the mean values to established normal reference ranges. Statistical significance was set at p<0.05. Data analysis included hemoglobin, serum iron, erythrocyte count, and hematocrit. Results: The analysis revealed that Athletes often have hemoglobin and serum iron levels below normal, indicating anemia risk. Iron deficiency may be due to inadequate dietary intake, increased iron loss through menstruation, and training-induced demands. Elevated levels may reflect inflammation or hemoconcentration due to dehydration or intense physical exertion. Discussion: Iron deficiency in female athletes is linked to nutritional deficiencies, menstrual blood loss, and elite training demands, necessitating targeted interventions to prevent health complications. Conclusion: The study highlights hematological and iron status abnormalities in Albanian female elite athletes, emphasizing routine screening, personalized nutritional strategies, and further research for effective interventions and integrating hematological monitoring into athlete health management and supporting future longitudinal studies to assess intervention outcomes and health trends among female athletes. Introducción: El hierro y los indicadores hematológicos son esenciales para evaluar la salud general y el rendimiento deportivo, especialmente en mujeres atletas. La carencia de estudios centrados en jugadoras de élite en Albania resalta la necesidad de investigaciones localizadas que permitan un seguimiento eficaz de su estado fisiológico y estrategias de intervención adecuadas. Objetivo: El objetivo de este estudio fue evaluar el estado hematológico y del hierro en atletas femeninas de élite en Albania, identificando deficiencias prevalentes y posibles causas subyacentes, como inflamación, deshidratación o factores nutricionales específicos. Metodología: Se realizó un estudio transversal descriptivo con 33 atletas femeninas de élite en Albania. Se recogieron muestras de sangre en ayunas durante la fase folicular temprana del ciclo menstrual, evitando ejercicio físico 24 horas antes. Se analizaron hemoglobina, hierro sérico, hematocrito y recuento de eritrocitos. Las medias se compararon con valores de referencia mediante pruebas t independientes. El nivel de significación estadística se estableció en p < 0,05. Resultados: Los análisis revelaron niveles bajos de hemoglobina y hierro sérico en la mayoría de las atletas, lo que sugiere riesgo de anemia. Las causas pueden incluir deficiencia dietética, pérdida menstrual o sobrecarga física. En ciertos casos, niveles elevados podrían reflejar inflamación o hemoconcentración asociada al entrenamiento intenso. Conclusiones: Se identificaron alteraciones hematológicas relevantes en las atletas evaluadas. Se recomienda implementar monitoreo regular, estrategias nutricionales individualizadas e investigaciones longitudinales que optimicen la salud y el rendimiento de las deportistas de élite. Introdução: A hierarquia e os indicadores hematológicos são essenciais para avaliar a saúde geral e a aptidão física, especialmente em atletas do sexo feminino. A falta de estudos centrais com atletas de elite na Albânia torna necessária a realização de investigações localizadas que permitam um acompanhamento eficaz do seu estado científico e estratégias de intervenção adequadas. Objectivo: O objectivo deste estudo é avaliar o estado hematológico e hierárquico dos atletas de elite na Albânia, identificando deficiências prevalentes e possíveis causas subjacentes, como inflamação, desidratação ou factores nutricionais específicos. Metodologia: Foi realizado um estudo transversal descritivo com 33 atletas de elite na Albânia. Serão colhidas amostras de sangue em clínicas durante o período menstrual, evitando-se o exercício físico 24 horas antes. Serão analisados ​​​​hemoglobina, sangue sérico, hematócrito e contagem de eritrócitos. As médias são comparadas com valores de referência que não são independentes. O nível de significância estatística é estável em p < 0,05. Resultados: A análise revelou baixos níveis de hemoglobina e gravidade na maioria das atletas, que são suscetíveis de anemia. As causas podem incluir deficiência alimentar, perda menstrual ou sobrecarga física. Em alguns casos, os níveis elevados podem refletir inflamação ou hemoconcentração associadas a um treino intenso. Conclusões: Foram identificadas alterações hematológicas relevantes nos atletas avaliados. Recomenda-se a implementação de monitorização regular, estratégias nutricionais individualizadas e investigações longitudinais para otimizar a saúde e o desempenho dos atletas de elite.