检索结果-南通市图书馆

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

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

Using fused filament fabrication to improve the tribocorrosion behaviour of 17-4 PH SS in comparison to other metal forming techniques

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Friction 2024年第10期12卷 2325-2343页

作者： Cristina GARCÍA-CABEZÓn Juan Alfonso nARAnJO celia GARCÍA-HERnÁnDEZ 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

Promotion of structural plasticity in area V2 of visual cortex prevents against object recognition memory deficits in aging and Alzheimer's disease rodents

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

neural Regeneration Research 2024年第8期19卷 1835-1841页

作者： Irene navarro-Lobato mariam Masmudi-martín Manuel F.López-Aranda Juan F.López-Téllez Gloria Delgado Pablo Granados-Durán celia Gaona-Romero marta Carretero-Rey Sinforiano Posadas maría E.Quiros-Ortega Zafar U.Khan Laboratory of neurobiology Centro de Investigaciones Médico Sanitarias(CIMES)University of MalagaMalagaSpain Department of Medicine Faculty of MedicineUniversity of MalagaMalagaSpain Centro de Investigación Biomédica en Red de Enfermedades neurodegenerativas(CIBERnED) Institute of Health Carlos IIIMadridSpain the Donders Institute for Brain Cognition and Behaviour Radboud UniversityNijmegenThe Netherlands the Brain Metastasis Group National Cancer Research Centre(CNIO)MadridSpain the Department of neurobiology University of California-Los AngelesLos AngelesCAUSA

Memory deficit,which is often associated with aging and many psychiatric,neurological,and neurodegenerative diseases,has been a challenging issue for *** till now,all potential drug candidates have failed to produce satisfa ctory ***,in the search for a solution,we found that a treatment with the gene corresponding to the RGS14414protein in visual area V2,a brain area connected with brain circuits of the ventral stream and the medial temporal lobe,which is crucial for object recognition memory(ORM),can induce enhancement of *** this study,we demonstrated that the same treatment with RGS14414in visual area V2,which is relatively unaffected in neurodegenerative diseases such as Alzheimer s disease,produced longlasting enhancement of ORM in young animals and prevent ORM deficits in rodent models of aging and Alzheimer’s ***,we found that the prevention of memory deficits was mediated through the upregulation of neuronal arbo rization and spine density,as well as an increase in brain-derived neurotrophic factor(BDnF).A knockdown of BDnF gene in RGS14414-treated aging rats and Alzheimer s disease model mice caused complete loss in the upregulation of neuronal structural plasticity and in the prevention of ORM *** findings suggest that BDnF-mediated neuronal structural plasticity in area V2 is crucial in the prevention of memory deficits in RGS14414-treated rodent models of aging and Alzheimer’s ***,our findings of RGS14414gene-mediated activation of neuronal circuits in visual area V2 have therapeutic relevance in the treatment of memory deficits.

关键词： behavioral performance brain-derived neurotrophic factor cognitive dysfunction episodic memory memory circuit activation memory deficits memory enhancement object recognition memory prevention of memory loss regulator of G protein signaling

维普期刊数据库

Should we perform decompressive laparotomy during severe acute pancreatitis with intra-abdominal hypertension below 25 mmHg:Only the gut knows

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第5期16卷 1470-1473页

作者： Thibault Vieille Melissa Crotet celia Turco Paul Monasterolo Hadrien Winiszewski Gael Piton Medical Intensive Care Unit Besancon University HospitalBesancon 25000France Intensive Care Unit Vesoul HospitalVesoul 70000France Department of Digestive Surgical Oncology-Liver Transplantation Unit Besancon University HospitalBesancon 25000France Inserm UMRS-938 Centre de Recherche Saint-Antoine(CRSA)Sorbonne UniversitéParis 10041NY212France Intensive Care Unit Nord Franche Comte HospitalTrevenans 90400France

We suggest that during severe acute pancreatitis(SAP)with intra-abdominal hypertension,practitioners should consider decompressive laparotomy,even with intra-abdominal pressure(IAP)below 25 ***,in this setting,non-occlusive mesenteric ischemia(nOMI)may occur even with IAP below this cutoff and lead to transmural necrosis if abdominal perfusion pressure is not promptly *** report our experience of 18 critically ill patients with SAP having undergone decompressive laparotomy of which one third had nOMI while IAP was mostly below 25 mmHg.

关键词： Acute pancreatitis Abdominal compartment syndrome Decompressive laparotomy Mesenteric ischemia Intra-abdominal pressure Abdominal perfusion pressure

Concordance among pulse wave velocity assessment methods: A network meta-analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中华医学杂志(英文版) 2024年第17期137卷 2024 Aug 8页

作者： Cavero-Redondo Iván Sequí-Domínguez Irene Saz-Lara Alicia Garcia-Klepzig Jose Luis Lucerón-Lucas-Torres maribel martínez-García Irene álvarez-Bueno celia martínez-Vizcaíno Vicente CarVasCare Research Group Facultad de Enfermería de Cuenca Universidad de Castilla-La Mancha Cuenca Spain Facultad de Ciencias de la Salud Universidad Autónoma de Chile Talca Chile Health and Social Research Center Universidad de Castilla-La Mancha Cuenca Spain Internal Medicine Department San Carlos University Hospital Madrid Spain Universidad Politécnica y Artística del Paraguay Asunción Paraguay

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

借智能电动车发展之势,激光雷达前景如何?

汽车与配件 2024年第13期 22-23页

作者：陈琦 celia Liu(翻译) 不详 Yole Group中国区

随着智能化技术的不断突破,高级辅助驾驶系统(ADAS)的集成和自动驾驶技术的进步重新定义汽车,也带动了激光雷达市场的迅速发展。在EAC 2024易贸汽车展现场,本刊记者采访了Yole Group汽车半导体部高级分析师Pierrick Boulay,与他共话激... 详细信息

随着智能化技术的不断突破,高级辅助驾驶系统(ADAS)的集成和自动驾驶技术的进步重新定义汽车,也带动了激光雷达市场的迅速发展。在EAC 2024易贸汽车展现场,本刊记者采访了Yole Group汽车半导体部高级分析师Pierrick Boulay,与他共话激光雷达的市场规模、技术现状及应用前景。

关键词：激光雷达智能化技术辅助驾驶系统自动驾驶技术现状及应用分析师重新定义

维普期刊数据库博看期刊

Convective drying of yellow discarded onion (Angaco InTA): Modelling of moisture loss kinetics and effect on phenolic compounds

在线全文

学校读者我要写书评

暂无评论

Information Processing in Agriculture 2020年第2期7卷 333-341页

作者： marıa celia Roman maria Paula Fabani Lorena Celina Luna Gabriela Egly Feresin German Mazza Rosa Rodriguez Instituto de Ingeniera Quımica-Grupo Vinculado al PROBIEn(COnICET-UnCo) Facultad de IngenierıaUniversidad Nacional de San JuanArgentina Instituto de Biotecnologıa Facultad de IngenierıaUniversidad Nacional de San JuanArgentina Instituto de Investigacio´n y Desarrollo en Ingenierıa de Procesos Biotecnologı´a y Energı´as AlternativasCONICET-Universidad Nacional del ComahueNeuquenArgentina

The Angaco InTA onion variety is the most cultivated and its production,mostly is destined for *** to their high-quality standards of these markets,many onions are *** drying process seems to be a promising solution that not only give added value to this product,but also extend shelf *** this work,the influence of convective drying process,at 60 and 70C,on the kinetic behavior,antioxidant activity,phenolic and flavonoid contents of discarded onion slices were *** that,the Angaco InTA onion is a variety genetically developed to have shorter cultivation times in this region;the phenolic compounds content in this onion variety,the drying kinetics and its influence on this content have never been *** this study,the phenolic compounds contributions to dehydrated product quality was evaluated,observing that the convective drying increased the total soluble phenolic and flavonoid contents and antioxidant properties for both temperatures,being highest at 70*** rehydration ratios were similar to the slices dried at 60 and 70*** models were used for describing the obtained drying curve equation of onion slices,being the Midilli’s model the one that presented the best ***’s model of water diffusion fitted all experimental data with acceptable correlation *** the achieved findings,70C is the optimum temperature to produce the dehydrated Angaco InTA onion.

关键词： Drying Antioxidant activity Phenolic content Kinetic model

High-repetition-rate source of nanosecond duration kA-current pulses driven by relativistic laser pulses

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2024年第3期12卷 106-115页

作者： Michael Ehret Jakub Cikhardt Philip Wykeham Bradford Iuliana-mariana Vladisavlevici Tomas Burian Diego de Luis Jose Luis Henares Rubén Hernández martín Jon Imanol Apiñaniz Roberto Lera JoséAntonio Pérez-Hernández João Jorge Santos Giancarlo Gatti Centro de Láseres Pulsados(CLPU) VillamayorSpain Czech Technical University in Prague Faculty of Electrical EngineeringPragueCzech Republic Univ.Bordeaux-CnRS-CEA Centre Lasers Intenses et Applications(CELIA)UMR 5107TalenceFrance Department of Radiation and Chemical Physics FZU-Institute of Physics of the Czech Academy of SciencesPragueCzech Republic

We report the first high-repetition-rate generation and simultaneous characterization of nanosecond-scale return currents of kA-magnitude issued by the polarization of a target irradiated with a PW-class high-repetition-rate titanium:sapphire laser system at relativistic *** present experimental results obtained with the VEGA-3 laser at intensities from5×10^(18)to 1.3×10^(20)W cm^(-2).A non-invasive inductive return-current monitor is adopted to measure the derivative of return currents of the order of kA ns-1and analysis methodology is developed to derive return *** compare the current for copper,aluminium and Kapton targets at different laser *** data show the stable production of current peaks and clear prospects for the tailoring of the pulse shape,which is promising for future applications in highenergy-density science,for example,electromagnetic interference stress tests,high-voltage pulse response measurements and charged particle beam *** compare the target discharge of the order of hundreds of nC with theoretical predictions and a good agreement is found.

关键词： current pulses electromagnetic pulse application high-power laser relativistic laser plasma

维普期刊数据库

Comparison of climatic threshold of geographical distribution between dominant plants and surface pollen in China

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2008年第8期51卷 1107-1120页

作者： CHEDDADI Rachid BEAUDOUIn celia Institut des Sciences de l'Evolution Universite Montpellier II Montpellier 34095France Department of Earth Sciences Sun Yat-sen UniversityGuangzhou 510275China

The geographical distribution of dominant plant species in China was georeferenced and climatic variables were interpolated into all ***,the percentage distributions of principal pollen taxa based on 1860 surface pollen sites in China were selected and the related climate values were interpolated with the same method. The geographical and climatic comparison between the two data-sets indicated that the climate threshold of most pollen taxa from surface pollen is coherent with plant distributions. The climatic envelopes of dominant plant are mostly accordant with those of pollen taxa at certain levels. However, some distinct offsets of the climate ranges exist between the two datasets for most pollen taxa identified at family level, such as Ericaceae,Asteraceae, Poaceae and Chenopodiaceae. The present study provides for the first time rich information on temperature and precipitation in relation to pollen and plant distribution based on the datasets on a continental scale useful for global ecological modeling and Quaternary palaeoclimate reconstruction.

关键词： surface pollen dominant plant species geographical distribution climate global changes

维普期刊数据库