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Friction 2024年第10期12卷 2325-2343页

作者： Cristina garcÍA-CABezÓn Juan Alfonso nARAnJO celia garcía-hern.n.ez Cristina BERGES Gemma HERRAnZ Fernando MARTÍn-PEDROSA Materials Engineering E.I.I.Universidad de ValladolidValladolid 47011Spain InEI-Escuela Técnica Superior de Ingeniería Industrial(ETSII) Universidad de Castilla La ManchaCastilla-La Mancha 13071Spain

Fused filament fabrication(FFF)is one of the additive manufacturing processes which has gained more interest because of its simplicity and *** technology is similar to the conventional metal injection moulding(MIM)process,consisting of the feedstock preparation of metal powder and polymer binders,followed by layer-by-layer 3D printing(FFF)or injection(MIM)to create green parts and,finally,debinding and ***,both technologies provide near-dense *** work presents an in-depth study of the processing method’s *** porosity,microstructure,hardness,corrosion,and tribocorrosion behaviour are compared for 17-4 PH SS samples processed from powder by additive manufacturing using FFF and MIM,as well as conventional powder metallurgy(PM)*** samples exhibited the highest macro and microhardness,while corrosion behaviour was similar for both MIM and FFF samples,but superior in comparison to conventional PM ***,the FFF-as fabricated samples displayed a significant improvement in tribocorrosion resistance that could be explained by the higher proportion of delta ferrite and retained austenite in their microstructure.

关键词： 17-4 PH SS fused filament fabrication(FFF) metal injection moulding(MIM) corrosion behaviour powder metallurgy(PM) tribocorrosion behaviour

Highly graphitized carbon nanosheets with embedded ni nanocrystals as anode for Li-ion batteries

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nano Research 2020年第1期13卷 86-94页

作者： Francisco Javier Soler-Piña celia hern.n.ez-Rentero Alvaro Caballero Julián Morales Enrique Rodríguez-Castellón Jesús Canales-Vázquez Dpto.Química Inorgánica e Ingeniería Química Instituto de Química Fina y NanoquímicaUniversidad de Córdoba14071CórdobaSpain Dpto.Química Inorgánica Cristalografía y MineralogíaFacultad de CienciasUniversidad de Málaga29071MálagaSpain Instituto de Energías Renovables Universidad de Castilla-La ManchaPaseo de La Investigación 102071AlbaceteSpain

A C/ni composite was prepared via thermal decomposition of a nickel oleate complex at 700℃,yielding disperse ni nanocrystals with an average size of 20 nm,encapsulated by carbon nanosheets as deduced from transmission electron microscopy(TEM)images and confirmed from X-ray photoelectron spectroscopy(XPS).Furthermore,the X-ray diffraction pattern revealed a good ordering of the carbon layers,forced by the ni encapsulation to adopt a bending *** the close interaction between the graphitized framework and the metallic nanoparticles we have studied the properties of the composite as an anode for Li-ion *** with other nanostructured synthetic carbons,this carbon composite has a low voltage hysteresis and a modest irreversible capacity value,properties that play a significant role in its behaviour as electrodes in full cell *** moderate rate values,0.25 C,the electrode delivers an average capacity value around 723 mAh·g^−1 on cycling,among the highest values so far reported for this carbon *** higher rate values,1 C,the average capacity values delivered by the cell on cycling decrease,around 205 mAh·g^−1,but it maintains good capacity retention,a coulombic efficiency close to 100%after the first cycles and recovery of the capacity values when the rate is restored from 3 to 0.1 C.

关键词： carbon nanosheets nickel nanoparticles anode lithium batteries

Solar-assisted photocatalytic water splitting using defective UiO-66 solids from modulated synthesis

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nano Research 2024年第5期17卷 4134-4150页

作者： celia M.Rueda-navarro María Cabrero-Antonino Paula Escamilla Valentín Díez-Cabanes Dong Fan Pedro Atienzar Belén Ferrer Ignacio Vayá Guillaume Maurin Herme G.Baldoví Sergio navalón Departamento de Química Universitat Politècnica de ValènciaCamino de Vera s/nValencia 46022Spain Instituto de Ciencia Molecular(ICMOL) Universitat de ValènciaPaterna 46980Spain ICGM Univ.MontpellierCNRSENSCMMontpellier34095France Instituto de Tecnología Química(UPV-CSIC) Universitat Politècnica de ValènciaAvenida de los Naranjos s/nValencia 46022Spain

Metal-organic frameworks(MOFs)are attracting increasing interests as photocatalysts for solar-driven hydrogen production from *** paper reports on a comparative study of using either acetic acid(AA)or trifluoroacetic acid(TFA)as the representative UiO-66 organic modulators for synthesizing visible light responsive UiO-66(Zr)-X(X:nH_(2) or nO_(2))photocatalysts for water *** results show that photocatalytic hydrogen generation from a water/methanol mixture can be improved by varying the nature and amount of the modulator employed to prepare the different UiO-66(Zr)-X(X:nH_(2) or nO_(2))solid ***-66(Zr)-nH_(2) was the most active photocatalyst,followed by UiO-66(Zr)-nO_(2),both prepared with 12 equivalents of AA with respect to the organic *** UiO-66(Zr)-nH_(2) solid was more active than the parent MOF in photocatalytic overall water splitting(OWS)(H_(2) and O_(2) production of 450 and 160μmol·g^(-1),respectively,in 5 h;apparent quantum yield(AQY)at 400 nm of 0.06%)in the absence of methanol and compares favourably with analogous *** on the photocatalytic activity of the most active solids of both series was obtained by means of a series of techniques,including ultraviolet-visible(UV-vis)diffuse reflectance,X-ray photoelectron spectroscopy(XPS),laser flash photolysis(LFP),electron spin resonance(ESR),photoluminescence and photoelectrochemical measurements together with density functional theory(DFT)*** results showed that organic acid modulators can be used to enhance the photocatalytic activity of missing linker UiO-66 defective materials in solar-powered water splitting.

关键词： heterogeneous photocatalysis metal-organic frameworks(MOFs) UiO-66 materials carboxylic acid modulators water splitting solar light

Diversity, Endemism and Conservation of Ferns(Polypodiales) in the Mexican Mountain Component

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Journal of Mountain Science 2015年第4期12卷 891-904页

作者： SAnGInéS-FRAnCO celia LUnA-VEGA Isolda COnTRERAS-MEDInA Raúl ESPInOSA David TEJERO-Díez José Daniel RIVAS Gerardo Laboratorio de Biogeografía y Sistemática Departamento de Biología Evolutiva Facultad de Ciencias Universidad Nacional Autónoma de México (UNAM) Escuela de Ciencias Universidad Autónoma "Benito Juárez" de Oaxaca (UABJO) Av.Universidad s/n Ex Hacienda de Cinco Se?ores Oaxaca de Juárez CP 68120 Oaxaca México Facultad de Estudios Superiores Zaragoza Unidad Multidisciplinaria de Investigación Experimental ZaragozaUniversidad Nacional Autónoma de México (UNAM) Carrera de Biología Facultad de Estudios Superiores Iztacala Universidad Nacional Autónoma de México MéxicoAvenida de los Barrios Número 1 Colonia Los Reyes Iztacala Tlalnepantla CP 54090 Estado de México México Laboratorio de Biogeografía Acuática Departamento de Biología Comparada Facultad de Ciencias Universidad Nacional Autónoma de México (UNAM)

We analyzed the distributional patterns of95 selected species of leptosporangiate ferns inhabiting the Mexican Mountain Component, using grid-cells of one geographical degree as unit areas,applying endemism indices and richness and beta diversity *** data were obtained from several herbaria and specialized *** grid-cells appear to be important for fern species richness, as they contain 35 to 49 *** gridcells are located in the Sierra Madre Oriental(SMO),Trans-Mexican Volcanic Belt(TMVB) and the Sierra Madre del Sur(SMS).Mean richness by latitudinal belts of one degree showed that the belts with highest values are related to the TMVB and SMS.A total of 13grid-cells were recognized as important from theperspective of endemism; most of them are located also in the SMO, TMVB and *** richest gridcells coincided with one of the main centres of endemism for ferns obtained in this study, located in the convergence of the southern part of the SMO, the eastern portion of the TMVB and the northern part of the SMS, reflecting the high humidity existing on the mountain slopes facing the Gulf of *** important grid-cells recognized from richness and endemism analyses coincide with Mexican natural Protected *** beta diversity analysis showed a low degree of similarity among grid-cells, implying a high species replacement, as the result of environmental heterogeneity occurring in the Mexican mountain *** the other hand, the spatial analysis suggested a pattern of phytogeographical regionalization comprising twomain areas: the Mexican Transition Zone and the Mexican Central *** play an important role in the Mexican biodiversity and contributing to the beta diversity of Mexico.

关键词： Biogeography Distributional patterns Leptosporangiate ferns Mexico

When the sum adds up:Using public procurement to avoid intersectoral cooperation barriers in lagging regions

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International Journal of Innovation Studies 2023年第4期7卷 291-300页

作者： celia Díaz-Catalán Josep Lobera Department of Sociology:Methods and Theory of the Universidad Complutense de Madrid Spain Department of Sociology Universidad Autonoma de MadridSpain

This study examined the application of an instrument that supports intersectoral collaboration in *** the strategic action field(SAF)approach,we analyze a precommercial public procurement instrument developed in Andalusia(Spain).Drawing on qualitative and quantitative data,we shed light on the dynamics of collaboration between public and private innovation *** show how a change in dynamics can generate a reduction in barriers to intersectoral *** presents an opportunity to promote the transfer of knowledge and strengthen a strategic field of action,such as the agroindustry,which is the main source of income for several people in Andalusia,a European region that is developmentally lagging.

关键词： Pre-commercial public procurement Innovation Regional innovation system Valley of death

Interleukin 6 and interferon gamma haplotypes are related to cytokine serum levels in dogs in an endemic Leishmania infantum region

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Infectious Diseases of Poverty 2023年第1期12卷 62-70页

作者： LuisÁlvarez Pablo-Jesús Marín-garcía Pilar Rentero-Garrido celia Pilar Martinez-Jimenez Lola Llobat Department of Animal Production and Health Public Health and Food Science and TechnologyVeterinary Medicine FacultyFacultad de VeterinariaUniversidad Cardenal Herrera-CEUCEU UniversitiesValenciaSpain Precision Medicine Unit INCLIVA Biomedical Research InstituteValenciaSpain Helmholtz Pioneer Campus(HPC) Helmholtz Zentrum MünchenNeuherbergGermany

Background The Ibizan Hound is a canine breed native to the Mediterranean region,where leishmaniasis is an endemic *** studies indicate a low prevalence of this disease in Ibizan Hound dogs,whereas other canine breeds present a high ***,the underlying molecular mechanisms still remain *** aim of this work is to analyse the relationship between serum levels of cytokines and the genomic profiles in two canine breeds,Ibizan Hound(resistant canine breed model)and Boxer(susceptible canine breed model).Methods In this study,we analyse the haplotypes of genes encoding cytokines related to immune response of Leishmania infantum infection in twenty-four Boxers and twenty-eight Ibizan Hounds apparently healthy using CanineHD DnA Analysis BeadChip including 165,480 mapped *** *** extension of *** was used to perform a General Linear Model(GLM)regression to estimate the magnitude of individual haplotype effects within each *** Mean levels of interferon gamma(IFn-γ),interleukin 2(IL-2)and IL-18 in Boxer dogs were 0.19±0.05 ng/ml,46.70±4.54 ng/ml,and 36.37±30.59 pg/ml,whereas Ibizan Hound dogs present 0.49±0.05 ng/ml,64.55±4.54 ng/ml,and 492.10±31.18 pg/ml,*** GLM regression shows fifteen haplotypes with statistically significant effect on the cytokine serum levels(Pnt are IL6-CGAAG and IFnG-GCA haplotypes,which increase and decrease the IL-2,IL-8 and IFn-γserum levels,*** Haplotypes in the IFnG and IL6 genes have been correlated to serum levels of IFn-γ,IL-2 and IL-18,and a moderate effect has been found on IL8 haplotype correlated to IL-8 and IL-18 serum *** results indicate that the resistance to *** infection could be a consequence of certain haplotypes with a high frequency in the Ibizan Hound dog breed,while susceptibility to the disease would be related to other specific haplotypes,with high frequency in *** studies are nee

关键词： Cytokine Haplotype Dog Immune response Regulatory mechanism Resistance Susceptibility

Clinical value of rapid urine trypsinogen-2 test strip, urinary trypsinogen activation peptide, and serum and urinary activation peptide of carboxypeptidase B in acute pancreatitis

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World Journal of Gastroenterology 2005年第46期11卷 7261-7265页

作者： Jesús Sáez Juan Martínez celia Trigo José Sánchez-Payá Luis Compay Raquel Laveda Pilar Grió Cristina garcía Miguel Pérez-Mateo Section of Gastroenterology and Department of Internal Medicine Hospital General Universitario de Alicante Alicante Spain Service of Clinical Laboratory Hospital General Universitario de Alicante Alicante Spain Service of Preventive Medicine Hospital General Universitario de Alicante Alicante Spain Section of Gastroenterology and Department of Internal MedicineHospital General Universitario de Alicante AlicanteSpain

AIM: To assess the usefulness of urinary trypsinogen-2 test strip, urinary trypsinogen activation peptide (TAP),and serum and urine concentrations of the activation peptide of carboxypeptidase B (CAPAP) in the diagnosisof acute ***: Patients with acute abdominal pain and hospitalized within 24 h after the onset of symptoms were prospectively studied. Urinary trypsinogen-2 was considered positive when a clear blue line was observed (detection limit 50 μg/L). Urinary TAP was measured using a quantitative solid-phase ELISA, and serum and urinary CAPAP by a radioimmunoassay ***: Acute abdominal pain was due to acute pancreatitis in 50 patients and turned out to be extrapancreatic in origin in 22 patients. Patients with acute pancreatitis showed significantly higher median levels of serum and urinary CAPAP levels, as well as amylase and lipase than extrapancreatic controls. Median TAP levels were similar in both groups. The urinary trypsinogen-2 test strip was positive in 68% of patients with acute pancreatitis and 13.6% in extrapancreatic controls (Pnary CAPAP was the most reliable test for the diagnosis of acute pancreatitis (sensitivity 66.7%, specificity 95.5%, positive and negative predictive values 96.6% and 56.7%, respectively), with a 14.6 positive likelihood ratio for a cut-off value of 2.32 nmol/***: In patients with acute abdominal pain,hospitalized within 24 h of symptom onset, CAPAP in serum and urine was a reliable diagnostic marker of acute pancreatitis. Urinary trypsinogen-2 test strip showed a clinical value similar to amylase and *** TAP was not a useful screening test for the diagnosis of acute pancreatitis.

关键词： Acute pancreatitis Urinary trypsinogen-2 Urinary trypsinogen activation peptide Activation peptide of carboxypeptidase B Acute abdominal pain

Stone-scoring systems for predicting complications in percutaneous nephrolithotomy:A systematic review of the literature

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Asian Journal of Urology 2023年第3期10卷 226-238页

作者： Giorgio Mazzon Simon Choong Antonio celia Department of Urology AULSS7 PedemontanaSan Bassiano HospitalBassano Del GrappaItaly Institute of Urology University College Hospitals of LondonLondonUK

Objective:Percutaneous nephrolithotomy is a treatment of choice for larger stones of the upper urinary ***,several nephrolithometric nomograms for prediction of post-operative surgical outcomes have been proposed,although uncertainties still exist regarding their roles in the estimation of ***:We conducted a systematic review on PubMed and Web of Sciences databases including English studies with at least 100 cases and published between January 2010 and December *** identified original articles evaluating correlations between the Guy’s stone score,the stone size(S),tract length(T),obstruction(O),number of involved calices(n),and essence or stone density(E)(S.T.O.n.E.),Clinical Research Office of the Endourological Society(CROES),and Seoul national University Renal Stone Complexity(S-ReSC)scores and post-operative complications in adult *** also included newly designed nomograms for prediction of specific ***:After an initial search of 549 abstracts,we finally included a total of 18 *** them,11 investigated traditional nephrolithometric nomograms,while seven newly designed nomograms were used to predict specific ***,7316 patients have been *** total,14 out of 18 papers are derived from retrospective single-center ***’s stone score obtained correlation with complications in five,*** score in four,while CROES score and S-ReSC score in three and two,*** of the studies investigated minimally invasive percutaneous nephrolithotomy(PCnL)and all cases have been conducted in prone *** newly designed nomograms,none of them is currently externally validated;five of them predict post-operative infections;the remaining two have been designed for thromboembolic events and urinary ***:This review presents all nomograms currently available in the PCnL field and highlights a certain number of *** data ha

关键词： Percutaneous nephrolithotomy Complications nomogram Stone-scoring system Clavien-Dindo

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基于岩土介质三维孔隙结构的两相流模型

岩土工程学报 2020年第1期42卷 37-45页

作者：张鹏伟胡黎明 Jay n Meegoda Michael A celia 清华大学水沙科学与水利水电工程国家重点实验室北京100084 北京交通大学北京100044 新泽西理工学院美国07102 普林斯顿大学美国08544

地下储层中岩土介质一般具有较低的孔隙连通性,宏观流动模拟一般忽略微观尺度的孔隙连通性,通过渗透率、弯曲度等参数反映储层的整体特性。但岩土介质的多孔性及孔隙间复杂的连通性,使得宏观描述流体在岩土介质中流动不能反映其内在流... 详细信息

地下储层中岩土介质一般具有较低的孔隙连通性,宏观流动模拟一般忽略微观尺度的孔隙连通性,通过渗透率、弯曲度等参数反映储层的整体特性。但岩土介质的多孔性及孔隙间复杂的连通性,使得宏观描述流体在岩土介质中流动不能反映其内在流动特征。孔隙结构模型的建立可以反映岩土介质中孔隙的几何形态及空间连通性,为解释流体在复杂多孔介质中的流动特性提供有效手段。通过考虑岩土介质孔隙尺寸分布、孔隙孔喉空间相关性、孔隙连通性等特征参数,建立了反映不同岩土介质连通性、各向异性特征的等效孔隙网络模型。等效孔隙网络模型通过水力特征参数等效的方式反映岩土介质三维微观孔隙结构,通过渗透率计算验证了模型的有效性。此外,基于建立的孔隙结构模型,开发了孔隙尺度动态两相流计算模型,模型可以反映孔隙内弯液面的动态运动过程,直观反映多孔介质中的优势渗流,可以为不同孔隙尺度岩土介质提供表观渗透率、击穿曲线、相对渗透率曲线等宏观计算参数。将孔隙尺度两相流模型应用于页岩气开采中水力阻滞特性研究,结果表明:页岩基质的残余饱和度约为30%,随着平均配位数的增加,残余饱和度显著降低。

关键词：两相流等效孔隙网络模型相对渗透率页岩气优势渗流

Highly efficient multi-metal catalysts for carbon dioxide reduction prepared from atomically sequenced metal organic frameworks

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nano Research 2021年第2期14卷 493-500页

作者： celia Castillo-Blas Consuelo Alvarez-Galvan Ines Puente-Orench Alba garcia-Sanchez Freddy E.Oropeza Enrique Gutirrez-Puebla Angeles Monge Victor A.de la Pena-O'hea Felipe Gandara Materials Science Institute of Madrid(CSIC) C/Sor Juana Ines de la Cruz 3Madrid 28049Spain Instituto de Catalisis y Petroleoquimica(CSIC) dM arie Curie 2Madrid 28049Spain Instituto de Ciencia de Materiales de Aragon Pedro Cerbuna 12Zaragoza 50009Spain Institut Laue Langevin 71 Avenue des Martyrs38042 GrenobleFrance Photoactivated Processes Unit IMDEA Energy Institute Mostoles Technology ParkAvenida Ramdn de la Sagra 3MostolesMadrid 28935Spain Department of Inorganic Chemistry University Autonomous of MadridC/Frandsco Tomdsy Valiente 7Madrid 28049Spain

The precise control on the combination of multiple metal atoms in the structure of metal-organic frameworks(MOFs)endowed by reticular chemistry,allows the obtaining of materials with compositions that are programmed for achieving enhanced *** present work illustrates how through the transformation of MOFs with desired arrangements of metal cations,multi-metal spinel oxides with precise compositions can be obtained,and used as catalyst precursor for the reverse water-gas shift *** differences in the spinel initial composition and structure,determined by neutron powder diffraction,influence the overall catalytic activity with changes in the process of in s itu formation of active,metal-oxide supported metal nanoparticles,which have been monitored and characterized with in situ X-ray diffraction and photoelectron spectroscopy studies.

关键词： reticular chemistry multi-metal metal-organic frameworks(MOFs) carbon dioxide reduction heterogeneous catalysis reverse water-gas shift in-situ X-ray photoelectron spectroscopy(XPS)