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Enhancement of the CO_(2)adsorption and hydrogenation to CH_(4)capacity of Ru–Na–Ca/γ–Al_(2)O_(3)dual function material by controlling the Ru calcination atmosphere

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Journal of Environmental Sciences 2024年第6期140卷 292-305页

作者： alejandro bermejo-lópez Beñat Pereda-Ayo Jon A.Onrubia-Calvo JoséA.González-Marcos Juan R.González-Velasco Department of Chemical Engineering Faculty of Science and TechnologyUniversidad del País Vasco UPV/EHUBarrio Sarrienas/n48940 LeioaBizkaiaSpain

Integrated CO_(2)capture and utilization(ICCU)technology requires dual functional materials(DFMs)to carry out the process in a single reaction *** influence of the calcination atmosphere on efficiency of 4%Ru-8%Na_(2)CO_(3)-8%CaO/γ-Al_(2)O_(3)DFM is *** adsorbent precursors are first co-impregnated onto alumina and calcined in ***,Ru precursor is impregnated and four aliquotes are subjected to different calcination protocols:static air in muffle or under different mixtures(10%H_(2)/N_(2),50%H_(2)/N_(2)and N_(2))*** are characterized by XRD,N_(2)adsorption-desorption,H_(2)chemisorption,TEM,XPS,H_(2)-TPD,H_(2)-TPR,CO_(2)-TPD and *** catalytic behavior is evaluated,in cycles of CO_(2)adsorption and hydrogenation to CH_(4),and temporal evolution of reactants and products concentrations is *** calcination atmosphere influences the physicochemical properties and,ultimately,activity of *** data and catalytic performance discover the acccomodation of Ru nanoparticles disposition and basic sites is mostly influencing the catalytic *** calcined under N_(2)flow(RuNaCa-N_(2))shows the highest CH_(4)production(449μmol/g at 370℃),because a well-controlled decomposition of precursors which favors the better accomodation of adsorbent and Ru phases,maximizing the specific surface area,the Ru-basic sites interface and the participation of different basic sites in the CO_(2)methanation ***,the calcination in a N_(2)flow is revealed as the optimal calcination protocol to achieve highly efficient DFM for integrated CO_(2)adsorption and hydrogenation applications.

关键词： CO_(2)methanation Integrated CO_(2)capture and utilization(ICCU) Dual functional material(DFM) Ru calcination atmosphere

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Anti-amyloid antibodies in Alzheimer’s disease: what did clinical trials teach us?

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Neural Regeneration Research 2025年第4期20卷 1092-1093页

作者： Danko Jeremic lydia Jiménez-Díaz Juan D.Navarro-lópez NeuroPhysiology&Behavior lab University of Castilla-La ManchaBiomedical Research Center(CRIB)School of Medicine of Ciudad RealCiudad RealSpain

Although many causes of Alzheimer’s disease(AD)may exist,both the original amyloid cascade and tau hypotheses posit that abnormal misfolding and accumulation of amyloid-β(Aβ)and tau protein is the central event causing the ***,that conclusion could be only partly true,and there is conflicting evidence about the role of both proteins in AD,being able to precede and influence one *** researchers argue that these proteins are mere executors rather than primary causes of ***,there have been continuing refinements of both hypotheses,with alternative explanations proposed.Aβand tau proteins may be independently involved in specific neurotoxic pathways;yet there may be other crucial processes going on in early ***,accumulating evidence suggests that Aβand tau act synergistically,rather than additively in disease onset(Jeremic et al.,2021,2023a).

关键词： amyloid Alzheimer additive

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A guide to diagnosis of iron deficiency and iron deficiency anemia in digestive diseases

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World Journal of Gastroenterology 2009年第37期15卷 4638-4643页

作者： Fernando bermejo Santiago García-lópez Digestive Service University Hospital of Fuenlabrada Fuenlabrada Madrid 28942 Spain Digestive Service University Hospital Miguel Servet Zaragoza 50009 Spain

Iron deficiency （ID）, with or without anemia, is often caused by digestive diseases and should always be investigated, except in very specific situations, as its causes could be serious diseases, such as cancer. Diagnosis of ID is not always easy. low serum levels of ferritin or transferrin saturation, imply a situation of absolute or functional ID. It is sometimes difficult to differentiate ID anemia from anemia of chronic diseases, which can coexist. In this case, other parameters, such as soluble transferrin receptor activity can be very useful. After an initial evaluation by clinical history, urine analysis, and serological tests for celiac disease, gastroscopy and colonoscopy are the key diagnostic tools for investigating the origin of ID, and will detect the most important and prevalent diseases. If both tests are normal and anemia is not severe, treatment with oral iron can be indicated, along with stopping any treatment with non-steroidal anti-inflammatory drugs. In the absence of response to oral iron, or if the anemia is severe or clinical suspicion of important disease persists, we must insist on diagnostic evaluation. Repeat endoscopic studies should be considered in many cases and if both still show normal results, investigating the small bowel must be considered. The main techniques in this case are capsule endoscopy, followed by

关键词： Anemia Iron-deficiency Iron deficiency anemia

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Amyloid-beta pathology-induced nanoscale synaptic disruption:the case of the GABA_B-GIRK assembly

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Neural Regeneration Research 2025年第5期20卷 1409-1410页

作者： Rafael lujan alejandro Martín-Belmonte Sergi Ferré Francisco Ciruela Synaptic Structure laboratory Instituto de Biomedicina de la UCLM(IB-UCLM)Departamento de Ciencias MédicasInstituto de Investigación en Salud de Castilla-La Mancha(IDISCAM)Facultad de MedicinaUniversidad Castilla-La ManchaCampus BiosanitarioC/AlmansaAlbaceteSpain Integrative Neurobiology Section National Institute on Drug AbuseIntramural Research ProgramNational Institutes of HealthBaltimoreMDUSA Pharmacology Unit Department of Pathology and Experimental TherapeuticsSchool of Medicine and Health SciencesInstitute of NeurosciencesUniversity of BarcelonaNeuropharmacology&Pain GroupNeuroscience ProgramBellvitge Institute for Biomedical ResearchL’Hospitalet de LlobregatSpain

Alzheimer's disease (AD) is characterized by an imbalance between excitatory and inhibitory brain networks,leading to aberrant homeostatic synaptic *** has progressively been recognized as syna ptopathy and syna ptic dysfunction has been identified as a key component of its pathogenesis (Schirinzi et al.,2020).Syna ptic dysfunction is believed to precede synapse loss,a primary biological correlate of cognitive decline in AD,inevita bly associated with neuronal death.

关键词： Alzheimer pathology

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Role of oxygen and ammonium ions in silver leaching with thiosulfate–ammonia–cupric ions

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Rare Metals 2014年第2期33卷 225-229页

作者： Valentin Ibarra-Galvan alejandro lópez-Valdivieso Xiong Tong Yi-Qi Cui Faculty of Chemistry Colima University Minerals Engineering Area Institute of Metallurgy Autonomous University of San Luis Potosi Faculty of land and Resource Engineering Kunming University of Science and Technology

The dissolution of silver with thiosulfate and copper ions was studied in a batch-stirred reactor at 25 °C in the absence and presence of various ammonium ions and oxygen concentrations in the aqueous solution. leaching silver with 4 mg l-1oxygen in the aqueous solution requires high concentration of ammonium and thiosulfate ions. High silver dissolution is achieved at pH of high cupric tetraamine concentration, around pH 9.8, but a high degradation of thiosulfate ions is resulted from their oxidation by the presence of oxygen. When the oxygen concentration is below 1 mg l-1, dissolved silver thiosulfate species are fairly stable and the degradation of thiosulfate ions in the aqueous solution is low. Under these conditions,high silver dissolution is attained using low thiosulfate concentration. At the oxygen concentration of 4 mg l-1,dissolved silver thiosulfate species precipitate out of the aqueous solution significantly affecting silver *** of dissolved silver thiosulfate species occurs because of oxidation of the thiosulfate bonding to the silver.

关键词： Silver Thiosulfate leaching Non-cyanide silver leaching Cupric tetraamine Oxygen

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Collectorless flotation of marmatite with pine oil

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Rare Metals 2017年第2期36卷 147-154页

作者： Zheng-Bin Deng Xiong Tong alejandro lópez Valdivieso Xiao Wang Xian Xie Faculty of land and Resource Engineering Kunming University of Science and TechnologyKunming 650093China State Key laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming 650093China Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources Kunming 650093China laboratory of Surface Chemistry Institute of Metallurgy Universidad Autonoma de San Luis PotosiC.P.78210 San Luis PotosiMexico

The interaction between pine oil and marmatite without collectors and activators was investigated by flotation,scanning electron microscope and energy-dispersive spectrometer（SEM-EDS）,infrared（IR） spectroscopy,Zeta potential,and first-principle theory *** flotation results show that marmatite exhibits considerable floatability with the addition of pine ***-EDS results show that carbon atomic ratios on the surface are significantly high,which suggests that the flotation of marmatite is caused by the adsorption of pine *** evidence of the adsorption mechanism was given by IR,and Zeta potential examining pine oil depends on the physical adsorption on the surface *** first-principle theory calculations indicate that pine oil molecule adsorbs on Zn and Fe atom surfaces by ionic bond and covalent bond of adsorption energies of-1.23and-1.51 eV,respectively.P orbital of O atom,s orbital of Zn atom,and d orbital of Fe are the major participants.

关键词： Pine oil Marmatite Collectorless flotation

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Resistance of full-scale beams against close-in *** modeling and field tests

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Defence Technology（防务技术） 2024年第10期40卷 35-47页

作者： A.Prado A.Alañón R.Castedo A.P.Santos l.M.lópez M.Chiquito M.bermejo C.Oggeri Escuela Politécnica Superior dé Avila Universidad de SalamancaÁvila05003Spain E.T.S.I.Minas y Energía Universidad Politecnica de MadridMadrid28003Spain Department of Engineering Aviation and TechnologySaint Louis UniversityMadrid28003Spain Department of Environment Land and Infrastructure Engineering(DIATI)Politecnico di TorinoTorino10129Italy

This paper explores the performances of a finite element simulation including four concrete models applied to a full-scale reinforced concrete beam subjected to blast loading. Field test data has been used to compare model results for each case. The numerical modelling has been, carried out using the suitable code lS-DYNA. This code integrates blast load routine(CONWEP) for the explosive description and four different material models for the concrete including: Karagozian & Case Concrete, Winfrith, Continuous Surface Cap Model and Riedel-Hiermaier-Thoma models, with concrete meshing based on 10, 15, and 20 mm. Six full-scale beams were tested: four of them used for the initial calibration of the numerical model and two more tests at lower scaled distances. For calibration, field data obtained employing pressure and accelerometers transducers were compared with the results derived from the numerical simulation. Damage surfaces and the shape of rupture in the beams have been used as references for comparison. Influence of the meshing on accelerations has been put in evidence and for some models the shape and size of the damage in the beams produced maximum differences around 15%. In all cases, the variations between material and mesh models are shown and discussed.

关键词： Blast test Numerical simulation lS-DYNA Concrete model Mesh effect Full-scale beams

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Exploring the reproductive ecology of the tropical semifossorial snake Ninia atrata

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Zoological Research 2020年第2期41卷 157-171页

作者： Teddy Angarita-Sierra Cesar alejandro lopez-Hurtado Tropical Organism Biology Research Group Universidad Nacional de ColombiaBogota111321Colombia Yoluka ONG Fundacion de Investigacion en Biodiversidad y ConservacionBogota110931Colombia Vicerrectoria de Investigacion Universidad Manuela BeltranBogota110231Colombia

Based on histological analyses and field studies,this research describes the reproductive ecology of a population of Ninia atrata snakes inhabiting an oil palm ***,through a multivariate approach,we explored the main drivers of reproductive output in *** showed that prey abundance and food intake were crucial variables contributing to reproductive *** linear regression models showed that neonates had high sensitivity(R2=55.29%)to extreme changes in climate,which was strongly related to slug and snail abundance variability and microhabitat *** cycles were markedly different between the sexes,being continuous in males and cyclical in *** this variation,reproductive cycles at the population level were seasonal *** recruitment of neonates all year,multiple clutches,high mating frequency,and continuous sperm production characterized the reproductive phenology of *** addition,a significant number of previtellogenic females presented oviductal sperm as well as uterine scars,suggesting a high precocity in the *** main drivers of reproductive output also differed between the *** females,clutch size and secondary follicle variability were highly related to stomach bolus volume,fat body area,and body *** males,height of piles of palm leaves and body mass,rather than intrinsic reproductive traits,were the main drivers of sperm ***,in both cases,the relationship between body mass,prey abundance,and food intake suggests that *** follows the income breeding strategy to compensate for reproductive costs and to maximize fitness.

关键词： Continuous male reproduction Clutch mass Income breeding Iteroparity Spermatogenesis Oogenesis Reproductive effort El Nino-Southern Oscillation(ENSO)

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Recent progress on isospin breaking corrections and their impact on the muon g-2 value

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Chinese Physics C 2010年第6期34卷 712-717页

作者： Gabriel lópez Castro Departamento de Física CinvestavApartado Postal 14-74007000 MxicoD.F Mxico

We describe some recent results on isospin breaking corrections which are of relevance for predictions of the leading order hadronic contribution to the muon anomalous magnetic moment aμ^*** when using τ lepton data. When these corrections are applied to the new combined data on the π^±π^0 spectral function, the prediction for aμ^*** based on τ lepton data gets closer to the one obtained using e^＋e^- data.

关键词： isospin breaking tau decays muon magnetic moment radiative corrections

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Risk of cancer,with special reference to extra-intestinal malignancies,in patients with inflammatory bowel disease

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World Journal of Gastroenterology 2013年第48期19卷 9359-9365页

作者： Alicia Algaba Iván Guerra ngel Castao Gema de la Poza Víctor M Castellano Montserrat lópez Fernando bermejo Department of Gastroenterology Hospital Universitario de Fuenlabrada 28942 Madrid Spain Department of Pathology Hospital Universitario de Fuenlabrada28942 Madrid Spain

AIM:To determine the incidence and characteristics of intestinal and extra-intestinal cancers among patients with inflammatory bowel disease in a Spanish hospital and to compare them with those of the local ***:This was a prospective,observational,7-year follow-up,cohort *** incidence,incidence rates based on person-years of follow-up and relative risk were calculated for patients with inflammatory bowel disease and compared with the background *** incidence of cancer was determined using a hospital-based data registry from Hospital Universitario de *** data and details about time from diagnosis of inflammatory bowel disease to occurrence of cancer,disease extent,inflammatory bowel disease treatment,cancer therapy and cancer evolution were also collected in the inflammatory bowel disease ***:Eighteen of 590 patients with inflammatory bowel disease developed cancer[cumulative incidence=3%(95%CI:1.58-4.52)vs 2%(95%CI:1.99-2.11)in the background population;RR=1.5;95%CI:0.97-2.29].The cancer incidence among inflammatory bowel disease patients was 0.53%(95%CI:0.32-0.84)per patient-year of *** with inflammatory bowel disease had a significantly increased relative risk of urothelial carcinoma(RR=5.23,95%CI:1.95-13.87),appendiceal mucinous cystadenoma(RR=36.6,95%CI:7.92-138.4),neuroendocrine carcinoma(RR=13.1,95%CI:1.82-29.7)and rectal carcinoid(RR=8.94,95%CI:1.18-59.7).Colorectal cancer cases were not ***:The overall risk of cancer did not significantly increase in our inflammatory bowel disease ***,there was an increased risk of urinary bladder cancer and,with less statistical power,an increased risk of appendiceal mucinous cystadenoma and of neuroendocrine *** cancer risk was low in our series.

关键词： Extra-intestinal cancer Inflammatory bowel disease Cancer risk Background population Urothelial carcinoma Appendiceal mucinous cystadenoma Neuroendocrine carcinoma Rectal carcinoid

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