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Screening of Fe-, Mn-, and Ni-based ores and mine residues as sustainable, environmentally friendly, and cost-effective oxygen carriers for chemical looping processes
No full text13 figures, 7 tables.-- © 2025. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/Finding a suitable oxygen carrier that is both cost-effective and highly reactive across multiple cycles in chemical looping processes remains a challenge. Consequently, this research focuses on the assessment of Fe-, Mn-, and Ni-based ores and mine residues as low-cost and sustainable oxygen carriers. Chemical composition, crushing strength, and attrition rate were determined. Their reactivity was evaluated in a thermobalance with CH4, H2, and CO, followed by assessment in a batch fluidized bed reactor with the same gases. All materials exhibited good mechanical properties at the outset, except MinMnT, which lacked the required mechanical strength and was subjected to thermal treatment. MinFeC, MinFeF, and MinMnT1000 demonstrated effective oxygen transport capacity and high reactivity both in thermobalance and FBR, with no agglomeration and a lifetime ranging between 3000 and 10,500 h. Given the outstanding performance of MinMnT1000 with CO and H2, it is considered an excellent candidate for further evaluation in iG-CLC with biomass.This study was financed in part by CAPES, providing a Sandwich Doctorate scholarship as part of its PRINT program. I. Adánez-Rubio acknowledges the “Juan de la Cierva” Program (Grant IJC2019-038987-I funded by MCIN/AEI/10.13039/501100011033) and “Ramón y Cajal” Program (Grant RYC2022-035841-I funded by MCIU/AEI/10.13039/501100011033 and FSE+).Peer reviewe
High Purity, Crystallinity and Electromechanical Sensitivity of Lead-Free (Ba0.85Ca0.15)(Zr0.10Ti0.90)O3 Synthesized Using an EDTA/glycerol Modified Pechini Method
Get PDFA single (Ba0.85Ca0.15)(Zr0.10Ti0.90)O3 phase material with a tetragonal structure is processed and synthesized with a modified Pechini method using ethylenediaminetetraacetic acid and glycerol as chelating and esterifying agents, respectively. The complete chemical transformation to the desired phase is achieved at 900 °C, which is 300 °C lower than conventional synthesis methods. Its consolidation, reaching up to 91% relative density, is carried out at 1400 °C. It is clearly demonstrated that the use of ethylenediaminetetraacetic acid and glycerol reagents is particularly beneficial for inducing a homogeneous grain size distribution (10 μm), which leads to very promising electromechanical properties (d33 = 451 pC/N; d31 = 160 pC/N; kp = 0.40; ε′33T = 4790 and Qm = 358) of the densified system.This research received funding from National Recovery and Resilience Plan (NRRP), Mission 4, Component 2, Investment 1.1, Call for tender No. 104 published on 2.2.2022 by the Italian Ministry of University and Research (MUR), funded by the European Union—NextGenerationEU– Project Title I-CREATE—Innovative Class of REfrActory ceramics for extreme Environments—CUP J53D23002480006- Grant Assignment Decree No. 104 adopted on 2 February 2022 by the Italian Ministry of University and Research (MUR). This research received funding from the National Recovery and Resilience Plan (NRRP), Mission 4, Component 2, Investment 1.1, Call for tender No. 1409 published on 14.9.2022 by the Italian Ministry of University and Research (MUR), funded by the European Union—NextGenerationEU—Project Title IUPITER—Innovative Eco-frIendly with tUned PorosITy PiEzoceramics foR use in non-invasive medical imaging technique—CUP J53D23014640001—Grant Assignment Decree No. 1409 adopted on 14 September 2022 by the Italian Ministry of University and Research (MUR).Peer reviewe
Factors Affecting Cryopreservation of Domestic Cat (Felis catus) Epididymal Spermatozoa
No full textSperm cryopreservation is a powerful tool for the conservation of endangered species, but its application requires adapting protocols to particular species, due to differences in sperm structure, function, and cryosensitivity. Research on the biology of endangered felids primarily relies on the domestic cat as an experimental model. Semen from live animals can be collected using several methods. However, in animals that die due to roadkill or in the field, spermatozoa must be retrieved from the epididymis. Differences may exist in the cryosensitivity of epididymal and ejaculated sperm due to the influence of secretions from accessory genital glands. We analyzed the effects of several factors on the motility and acrosomal integrity of cryopreserved cat epididymal spermatozoa, including cooling rate, storage system, time and temperature of straw loading, and the freezing method in nitrogen vapors. There were no significant differences in motility or acrosomal integrity at thawing between fast (−0.5 °C/min) or slow (−0.125 °C/min) cooling rates or between loading straws at room temperature versus 5 °C. Post-thaw motility was significantly higher when using straws compared to pellets and when freezing in nitrogen vapors at two levels rather than at a single level. Additionally, interactions between the loading temperature of straws and both motility and acrosomal integrity were not significant. These results are important for standardizing protocols to cryopreserve feline epididymal sperm, facilitating the rescue of genetic material from endangered species in the field.Natalia Gañán received a postgraduate grant from the I3P-CSIC program and a predoctoral grant from the BBVA Foundation. This research was funded by the Agencia Estatal CSIC, the Spanish Ministry of Environment and the BBVA Foundation.Peer reviewe
Understanding the Natural History and the Effects of Current Therapeutic Strategies on Urea Cycle Disorders: Insights from the UCD Spanish Registry
Get PDF(This article belongs to the Special Issue Nutritional Treatment and Screening for Inherited Metabolic Diseases).Background/Objectives: The present study updates the Spanish registry of patients with urea cycle disorders (UCD), originally established in 2013, to provide comprehensive epidemiological data and evaluate the impact of therapeutic strategies and newborn screening (NBS) on clinical outcomes. Methods: This retrospective, multicenter study focuses on 255 Spanish UCD patients. It includes all living and deceased cases up to February 2024, analyzing demographic, clinical, and biochemical variables. Results: The incidence of UCD in Spain over the past decade was 1:36,063 births. The most common defects were ornithine transcarbamylase deficiency (OTCD) and argininosuccinate synthetase deficiency. Early-onset (EO) cases comprised 32.7%, and 10.6% were diagnosed through NBS. Global mortality was 14.9%, higher in carbamoylphosphate synthetase 1 deficiency (36.8%) and male OTCD patients (32.1%) compared to other defects (p = 0.013). EO cases presented a higher mortality rate (35.8%) than late-onset (LO) cases (7.1%) (p p Conclusions: This updated analysis highlights the positive impact of NBS and advanced treatments on mortality and neurologic outcomes. Persistent neurological challenges underscore the need for further therapeutic strategies.This research was partially funded by Lucane SL and Immedica Pharma Spain. Medical writing support was funded by Immedica Pharma Spain.Peer reviewe
Geographies of Peripheral Rural Areas. Some Comments
No full textThe dominance of positivist approaches has led to the development of center-periphery models, which establish a relatively naturalized relationship between urban core areas and residual rural areas. Recent approaches to planetary rural geographies provide an opportunity to re-situate this issue and address it within the context of the revitalization of many rural areas, not only in the global North but also in the global South. However, multiple competing realities continue to shape the dynamics of these spaces. In large areas of the global South, material challenges persist despite some promising trends, while in the global North, dynamics are largely influenced by post-industrial societies. Africa serves as a relevant example to illustrate the limitations and shortcomings of recent planetary approaches to rural geography development. As an alternative, smaller-scale approaches focusing on community participation and the living conditions of people are proposed.Peer reviewe
Evaluación del atrapamiento de hidrógeno en un acero ferrítico mediante desorción a temperatura programa (TPD)
No full textCNMAT 2024 – Congreso Nacional de Materiales
SOCIEMATLa técnica de análisis de desorción térmica se emplea en el estudio de la fragilización por hidrógeno ya
que proporciona información crucial sobre la cantidad de hidrógeno absorbido en el metal. La
desorción térmica implica calentar una muestra de material previamente expuesta al hidrógeno, de
forma controlada, a diferentes temperaturas lo que provoca la liberación del hidrógeno atrapado en
la microestructura del acero. La cantidad de hidrógeno liberado y la temperatura a la que ocurre la
desorción proporciona información del tipo de trampas en las que el hidrógeno se acumula y su
distribución en la mismas.
Tanto, la determinación del contenido de hidrógeno presente en el material cómo el tipo de trampas
en las que se acumula constituyen una información clave para establecer la severidad del fenómeno
de fragilización por hidrogeno en el metal y comprender los mecanismos involucrados en el fenómeno
de fragilización por hidrógeno que puede causar una disminución significativa en su ductilidad y
resistencia mecánica.
En este trabajo se comparan los espectros obtenidos por TPD en un acero ferrítico, antes y después de
ser cargado catódicamente con H durante 3 horas, 6 horas y 24 horas. El espectro TPD correspondiente
a la muestra cargada catódicamente durante 3h revela un notable cambio respecto de la muestra sin
cargar, con la aparición de picos más intensos y anchos a temperaturas más bajas lo que indica que el
hidrógeno se ha acumulado en trampas de baja energía -reversibles-. La mayor movilidad y difusividad
del hidrógeno atrapado en este tipo de trampas en la microestructura ferrítica tiene una influencia
perniciosa en las propiedades mecánicas del acero que se manifiesta muy claramente en los ensayos
de tracción lenta cuyas curvas de tracción indican que las muestras cargadas catódicamente durante
tres horas promueven una pérdida de ductilidad del 70% en comparación con el material sin cargar.
Un comportamiento análogo presenta las muestras cargadas catódicamente durante tiempos más
largos -6h y 24h-. El análisis TPD no muestra un aumento significativo del contenido de hidrógeno
respecto a la muestra cargada 3h, apuntando a que 3 horas son suficientes para alcanzar niveles de
saturación de hidrogeno en las trampas reversibles, ya que las pérdidas de ductilidad para tiempos de
6h y 24h son análogas a las descritas para tiempos más cortos, provocando también una rotura frágil
del acero
Gene expression data (RNASeq) of Vestibular Schwannomas, Non-Vestibular Schwannoma and normal nerve
No full text[Description of methods used for collection/generation of data] Sequencing was performed using PE150 sequencing (150 bp paired-end sequencing on each strand) on the Illumina NovaSeq X Plus platform (Illumina, San Diego, CA, USA) from Novogene. Files are row data.Los datos depositados contienen los resultados de la secuenciación masiva del ARN total aislado a partir de 63 schwannomas vestibulares, 4 schwannomas de nervios distintos al nervio vestibular (VS11, VS33, VS34 y VS74) y 7 fragmentos de diferentes nervios sanos (VS56, VS58, VS65, VS66, VS67, VS68, VS99). Los fragmentos de VS conservados en RNAlater® a -80°C se trataron con el reactivo de lisis Qiazol para la extracción de ARN utilizando el mini kit RNeasy (Qiagen, 50974106) siguiendo las instrucciones recomendadas por el fabricante en el servicio de Génomica del Instituto de Investigaciones Biomédicas Sols-Morreale de Madrid. Se utilizó ARN con un RIN (índice de integridad del ARN) superior a 7 para la secuenciación. La secuenciación se llevó a cabo utilizando la secuenciación PE150 (secuenciación “paired-end” de 150 pb en cada hebra) en la plataforma Illumina NovaSeq X Plus (Illumina, San Diego, CA, EE.UU.) de la empresa Novogene. Los datos de secuenciación depositados se presentan en formato fastq.This research was funded by Spanish MCIN PID2020-115274RB-I00 (THEARPY), PID2023-147347OB-I00 (PROHEAR), and CSIC #2024AEP115 grants to Isabel Varela-Nieto and Silvia Murillo-Cuesta## FICHERO X204SC24075390-Z01-F003_1.tar ##MD5-manual.pdfMD5.txtcheckSize.xlsMD5-win.exe03.Result_X204SC24075390-Z01-F002_Homo_sapiens.zipReadme.html## FICHERO X204SC24075390-Z01-F003_2.tar 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FICHERO X204SC24075390-Z01-F003_3.tar 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FICHERO X204SC24075390-Z01-F003_4.tar ##04.Ref/genome.gtf.gz04.Ref/genome_gene.fa.gz04.Ref/genome.fa.gzPeer reviewe
Advancing archaeological sedimentary lipid biomarker analysis: A review of recent developments and methodological guidelines
No full textThis review targets archaeological scientists and geoarchaeologists, examining the current state of lipid biomarker analysis in archaeological sediments—a growing field. Lipid compounds and their stable isotope ratios serve as valuable proxies for reconstructing past climates, vegetation, freshwater availability, human-environment interactions, diet, technology, and subsistence practices. The paper reviews experimental, archaeological, and ethnoarchaeological studies that apply lipid biomarkers to archaeological sedimentary deposits, contributing to paleoenvironmental research and insights into past human behavior. Key topics include fecal biomarkers, revealing diet and subsistence, and pyrogenic biomarkers, shedding light on fire technology and cooking traditions. Methodological guidelines are provided, covering sample collection, lipid extraction, pretreatment, and compound detection. Challenges include standardizing protocols, integrating new biomarkers, microcontextual approaches, and adopting advanced analytical techniques. Advancing lipid biomarker analysis promises to enhance interdisciplinary research and deepen our understanding of archaeological contexts and human-environment dynamics.The authors would like to thank the members and collaborators of the AMBILAB for their work toward the development of sedimentary lipid analysis in archaeology, the support of the IUBO-ULL and three anonymous reviewers whose comments and recommendations contributed significantly to the current version of the paper. Some of this work has been carried out with the financial support of an ERC Consolidator grant (ERC-CoG-PALEOCHAR-648871, PI Carolina Mallol), the Spanish State Research Agency (PID2019-107113RB-I00, PI Carolina Mallol), Fundación Caja Canarias and “La Caixa” (project 2018PATRI19, PI Carolina Mallol and Project IMPACT, 2022CLISA04, PIs Margarita Jambrina-Enríquez and Natalia Égüez), a Marie Skłodowska-Curie Actions Global Postdoc grant (101032608 IBERHUNT, PI Natalia Égüez), a Ramón y Cajal Postdoc programme (RYC2022-036901-I, MCIN/AEI/10.13039/501100011033 and FSE+, PI Natalia Égüez), MICIU/AEI/10.13039/501100011033 (project CCR-CAN TED2021-129695A-I00, PI Margarita Jambrina-Enríquez), and European Union Next Generation/PRTR. - Organismo Autónomo de Parques Nacionales (project PALEOMOL 2915/2022, PI Margarita Jambrina-Enríquez).Peer reviewe
Analysing variations in flowering time based on the dynamics of chill and heat accumulation during the fulfilment of cultivar-specific chill requirements in apricot
No full text9 Pags.- 5 Figs.- 1 Tabl.The fulfilment of cultivar-specific chill requirements (CR) and heat requirements (HR) is crucial for breaking
dormancy and achieving optimal blooming and fruit set in temperate fruit trees. The reduction in winter chill
availability over the coming decades due to global warming is expected to compromise the fulfilment of CR in
many production areas, leading to production losses. The interplay between the accumulation of CR and HR
remains unclear. In this study, we used three-year-old potted trees of the apricot cultivar ‘Deseo’ (60 chill
portions; CP) to examine how the dynamics of chill and heat accumulation affect the timing of full bloom. We
supplied the trees with their specific chill needs by moving them between three distinct environments (constant
temperature cold store, ambient conditions and heated glasshouse) before transferring them to a heated glass house for flowering. Despite trees being exposed to similar chilling, the variation in temperature dynamics during
the dormant period affected flowering dates. The findings suggest that chill and heat accumulation phases can
overlap, and once a specific percentage the cultivar specific CR is fulfilled, the simultaneous accumulation of chill
and heat appears to advance flowering. A higher heat accumulation (measured in Growing Degree Hours; GDH)
during the fulfilment of CR was associated with lower heat accumulation needed for blooming in a heated
glasshouse where the accumulation of chill had ceased. The higher correlation was observed when the 75 % of
the CR had been fulfilled suggesting that simultaneous accumulation of chill and heat in the last stages appears to
be more effective in triggering earlier blooming. This experimental set up could also help to develop new
modelling approaches for temperate fruit trees, considering changes in typical patterns of chill accumulation as
well as abnormal high winter temperatures caused by climate change.The authors acknowledge the Spanish Ministry of Science and Innovation for supporting the projects “Apricot breeding” (APRIBRED, Ref: PID2022-137392OB-I00) and ALADINO-MAGIC (Ref: PID2020-118008RB-C21). This study was also supported by the Ministry of Science and Innovation (Spain) through the postdoctoral research grant (JDC2022-050286-I).Peer reviewe
An analysis of parameter compression and Full-Modeling techniques with Velocileptors for DESI 2024 and beyond
No full textM. Maus et al. -- ArXiv ePrint: 2404.07312. -- Dark Energy Spectroscopic Instrument (DESI) survey year 1 results. -- Data from the plots in this paper are available on Zenodo as part of DESI’s Data Management Plan (DOI: 10.5281/zenodo.10951714). The data used in this analysis will be made public along the Data Release 1 (details in https://data.desi.lbl.gov/doc/releases/).n anticipation of forthcoming data releases of current and future spectroscopic surveys, we present the validation tests and analysis of systematic effects within velocileptors modeling pipeline when fitting mock data from the AbacusSummit N-body simulations. We compare the constraints obtained from parameter compression methods to the direct fitting (Full-Modeling) approaches of modeling the galaxy power spectra, and show that the ShapeFit extension to the traditional template method is consistent with the Full-Modeling method within the standard ΛCDM parameter space. We show the dependence on scale cuts when fitting the different redshift bins using the ShapeFit and Full-Modeling methods. We test the ability to jointly fit data from multiple redshift bins as well as joint analysis of the pre-reconstruction power spectrum with the post-reconstruction BAO correlation function signal. We further demonstrate the behavior of the model when opening up the parameter space beyond ΛCDM and also when combining likelihoods with external datasets, namely the Planck CMB priors. Finally, we describe different parametrization options for the galaxy bias, counterterm, and stochastic parameters, and employ the halo model in order to physically motivate suitable priors that are necessary to ensure the stability of the perturbation theory.We thank Arnaud de Mattia, Pat McDonald, and other members of the Galaxy and Quasar Clustering working group within DESI for helpful discussions pertaining to this work. SC thanks Misha Ivanov and Matias Zaldarriaga for useful discussions on velocity stochasticities. MM and MW are supported by the DOE. SC acknowledges the support of the National Science Foundation at the Institute for Advanced Study. This material is based upon work supported by the U.S. Department of Energy (DOE), Office of Science, Office of High-Energy Physics, under Contract No. DE-AC02-05CH11231, and by the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility under the same contract. Additional support for DESI was provided by the U.S. National Science Foundation (NSF), Division of Astronomical Sciences under Contract No. AST-0950945 to the NSF’s National Optical-Infrared Astronomy Research Laboratory; the Science and Technology Facilities Council of the United Kingdom; the Gordon and Betty Moore Foundation; the HeisingSimons Foundation; the French Alternative Energies and Atomic Energy Commission (CEA); the National Council of Humanities, Science and Technology of Mexico (CONAHCYT); the Ministry of Science and Innovation of Spain (MICINN), and by the DESI Member Institutions: https://www.desi.lbl.gov/collaborating-institutions. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the U.S. National Science Foundation, the U.S.
Department of Energy, or any of the listed funding agencies. The authors are honored to be permitted to conduct scientific research on Iolkam Du’ag (Kitt Peak), a mountain with particular significance to the Tohono O’odham Nation.Peer reviewe