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Ferroelectric solid solution Li1-xTa1-xWxO3 as potential photocatalysts in microbial fuel cells:Effect of the W content

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Chinese Journal of Chemical Engineering 2018年第9期26卷 1985-1991页

作者： Abdellah Benzaouak Nour-Eddine Touach v.M.Ortiz-martinez M.J.Salar-Garcia F.Hernandez-Fernandez A.P.de los Rios Mohammed El Mahi El Mostapha Lotfi Laboratory of Mechanics and Industrial Processes Chemical Sciences Research TeamENSETMohammed V University in RabatMorocco Department of Chemical and Environmental Engineering Technical University of CartogenaCampus Muralla Del Mar MurdaSpain

Microbial fuel cells(MFCs)are bio-electrochemical systems that can directly convert the chemical energy contained in an effluent into bioelectricity by the action of *** performance of these devices is heavily impacted by the choice of the material that forms the *** work focuses on the assessment of ferroelectric and photocatalytic materials as a new class of non-precious catalysts for MFC cathode construction.A series of cathodes based on mixed oxide solid solution of LiTaO_3with WO_3formulated as Li_(1-x)Ta_(1-x)W_xO_3(x=0,0.10,0.20 and0.25),were prepared and investigated in *** catalyst phases were synthesized,identified and characterized by DRX,PSD,MET and Uv–vis absorption *** cathodes were tested as photoelectrocatalysts in the presence and in the absence of visible light in devices fed with industrial *** results revealed that the catalytic activity of the cathodes strongly depends on the ratio of substitution of W^(6+)in the LiTaO_*** maximum power densities generated by the MFC working with this series of cathodes increased from60.45 mW·m^(-3)for x=0.00(LiTaO_3)to 107.2 mW·m^(-3)for x=0.10,showing that insertion of W^(6+)in the tantalate matrix can improve the photocatalytic activity of this ***,MFCs operating under optimal conditions were capable of reducing the load of chemical oxygen demand by 79%(COD_(initial)=1030 mg·L^(-1)).

关键词： Ferroelectric materials Tantalate Photocathode Microbial fuel cell Bioenergy Wastewater treatment

Atrial fibrillation in the elderly

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Journal of Geriatric Cardiology 2017年第3期14卷 155-157页

作者： Manuel martinez-Selles Antonio Bayes de Lun Hospital General Universitario Gregorio Maranon CIBER C V Universidad Europea Universidad Complutense Madrid Spain Fundacio Investigacio Cardiovascular ICCC Hospital de Sant Pau Barcelona Spain

Atrial fibrillation （AF） is the most frequent arrhythmia. Due to population aging, AF is a growing epidemic and its importance will continue to increase in the next decades. Although the prevalence of AF is high in advanced age, the number of subjects with predisposing factors for AF is even higher. Most of these factors increase the risk of atrial fibro- sis, an important component of atrial arrhythmia mecha- nisms. In fact, the new techniques to detect atrial fibrosis are showing the strong association between atrial fibrosis and AF risk. Regarding predisposing factors for AF, interatrial block （LAB） seems to be a key factor.

关键词： Age Atrial fibrillation Interatrial block Predisposing factors

On q-n-gonal Klein Surfaces

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Acta Mathematica Sinica,English Series 2007年第10期23卷 1833-1844页

作者： B.ESTRADA R.A.HIDALGO E.martinez Departamento de Matemáticas Fundamentales UNEDPaseo Senda del Rey 928040 MadridSpain Departamento de Matemática Universidad Técnica Federico Santa MaríaCasilla 110-V ValparaisoChile

We consider proper Klein surfaces X of algebraic genus p ≥ 2, having an automorphism φ of prime order n with quotient space X/（φ） of algebraic genus q. These Klein surfaces axe called q-n-gonal surfaces and they are n-sheeted covers of surfaces of algebraic genus q. In this paper we extend the results of the already studied cases n ≤ 3 to this more general situation. Given p ≥ 2, we obtain, for each prime n, the （admissible） values q for which there exists a q-n-gonal surface of algebraic genus p. Furthermore, for each p and for each admissible q, it is possible to check all topological types of q-n-gonal surfaces with algebraic genus p. Several examples are given： q-pentagonal surfaces and q-n-gonal bordered surfaces with topological genus g = 0, 1.

关键词： Klein surfaces Riemann surfaces automorphism groups non-Euclidean crystallographic groups

On the use of ferroelectric material LiNbO3 as novel photocatalyst in wastewater-fed microbial fuel cells

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Particuology 2017年第5期15卷 147-155页

作者： N.Touach v.M.Ortiz-martinez M.J.Salar-Garcia A.Benzaouak F.Hernandez-Fernandez A.P.de Rios M.El Mahi E.M.Lotfi Laboratory of Mechanics Processes and Industrial Process Team Chemical Sciences ENSET Mohammed V University in Rabat Morocco School of Chemical and Environmental Engineering Polytechnic University of Cartagena Campus Muralla Del Mar Murcia Spain University of Murcia Chemical Engineering Department Campus de Espinardo E-30071 Murcia Spain

In this work, the use of lithium niobate （LiNbO3）, a ferroelectric and photocatalyst material, is investi- gated as a new type of cathode catalyst for wastewater-fed single-chamber microbial fuel cells （MFCs）. Carbon cloth electrodes coated with LiNbO3 were studied with and without Uv-vis irradiation to assess its photocatalytic behavior in these devices. The synthesized phase of LiNbO3 was characterized by X- ray diffraction, differential scanning calorimetry, particle size distribution, and transmission electron microscopy analyses. The MFC containing a LiNbO3-based cathode exhibited a maximum open circuit potential and power output of 400 mv and 131 mW/m^3, respectively, under irradiation. This cathode configuration also achieved the maximum chemical oxygen demand removal of 84% after 120 h of MFC operation. These results show that ferroelectric materials such as LiNbO3 could be used as cathode cat- alysts in MFC devices. As a complementary analysis, the removal of the heavy metals detected in the wastewater was also monitored.

关键词： Lithium niobate Ferroelectric material Photocatalyst Microbial fuel cell (MFC)Power outputWastewater treatment

Ultrasmall CoS nanoparticles embedded in heteroatom-doped carbon for sodium-ion batteries and mechanism explorations via synchrotron X-ray techniques

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Journal of Energy Chemistry 2023年第4期79卷 373-381页

作者： Congcong Liu Qiongqiong Lu Mikhail v.Gorbunov Ahmad Omar Ignacio G.Gonzalez martinez Panpan Zhao Martin Hantusch Antonius Dimas Chandra Permana Huanyu He Nikolai Gaponik Daria Mikhailova Leibniz Institute for Solid State and Materials Research(IFW)Dresden e.v. Helmholtzstraße 2001069 DresdenGermany Inorganic Chemistry II Technische Universität DresdenBergstraße 6601069 DresdenGermany Physical Chemistry Technische Universität DresdenZellescher Weg 1901069 DresdenGermany

Transition metal sulfides have been regarded as promising anode materials for sodium-ion batteries(SIB).However,they face the challenges of poor electronic conductivity and large volume change,which result in capacity fade and low rate *** this work,a composite containing ultrasmall CoS(~7 nm)nanoparticles embedded in heteroatom(N,S,and O)-doped carbon was synthesized by an efficient one-step sulfidation process using a Co(Salen)*** ultrasmall CoS nanoparticles are beneficial for mechanical stability and shortening Na-ions diffusion ***,the N,S,and O-doped defect-rich carbon provides a robust and highly conductive framework enriched with active sites for sodium storage as well as mitigates volume expansion and polysulfide *** anode for SIB,CoS@HDC exhibits a high initial capacity of 906 mA h g^(-1)at 100 mA g^(-1)and a stable long-term cycling life with over 1000 cycles at 500 mA g^(-1),showing a reversible capacity of 330 mA h g^(-1).Meanwhile,the CoS@HDC anode is proven to maintain its structural integrity and compositional reversibility during ***,Na-ion full batteries based on the CoS@HDC anode and Na_(3)v_(2)(PO_(4))_(3)cathode demonstrate a stable cycling behavior with a reversible specific capacity of~200 m A h g^(-1)at least for 100 ***,advanced synchrotron operando X-ray diffraction,ex-situ X-ray absorption spectroscopy,and comprehensive electrochemical tests reveal the structural transformation and the Co coordination chemistry evolution of the CoS@HDC during cycling,providing fundamental insights into the sodium storage mechanism.

关键词： Sodium-ion batteries Cobalt sulfide nanoparticles Heteroatom-doped porous carbon matrix Synchrotron X-ray techniques Reaction mechanisms

Using modular 3D digital earth applications based on point clouds for the study of complex sites

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International Journal of Digital Earth 2016年第12期9卷 1135-1152页

作者： Oscar martinez-Rubi Maurice de Kleijn Stefan verhoeven Niels Drost Jisk Attema Maarten van Meersbergen Rob van Nieuwpoort Rens de Hond Eduardo Dias Pjotr Svetachov Netherlands eScience Center AmsterdamThe Netherlands Spatial Information laboratory(SPINlab) VU University AmsterdamAmsterdamThe Netherlands Faculty of Arts Institute for HistoricalLiterary and Cultural studies(HLCS)Radboud UniversityNijmegenThe Netherlands Geodan b.v. AmsterdamThe Netherlands Donald Smits Center for Information Technology University of GroningenGroningenThe Netherlands

This article discusses the use of 3D technologies in digital earth applications(DEAs)to study complex *** are large areas containing objects with heterogeneous shapes and semantic *** study proposes that DEAs should be modular,have multi-tier architectures,and be developed as Free and Open Source Software if *** DEAs requiring high reliability in the 3D measurements,point clouds are proposed as basis for the 3D Digital digital earth *** the development of DEAs,we propose to follow a workflow with four components:data acquisition and processing,data management,data analysis and data *** every component,technological challenges of using 3D technologies are identified and solutions applied for a case study are *** case study is a modular 3D DEA developed for the archaeological project Mapping the via *** 3D DEA allows archaeologists to virtually analyze a complex study area.

关键词： 3D digital earth application point clouds data management visualization

Effects of Silicon Nanoparticles on the Transient Liquid Phase Bonding of 304 Stainless Steel

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Journal of Materials Science & Technology 2014年第3期30卷 259-262页

作者： H.M.Hdz-García A.I.martinez R.Mu?oz-Arroyo J.L.Acevedo-Dávila F.García-vázquez F.A.Reyes-valdes Corporación Mexicana de Investigación en Materiales S.A.de C.v. Ciencia y Tecnología No.790 Fracc.Saltillo 400 Saltillo Coah.CP.25290 Mexico Centro de Investigación y de Estudios Avanzados del IPN Carr.Mty-Saltillo km.13 Ramos Arizpe Coah.CP.25900 Mexico

Transient liquid phase （TLP） bonding of 304 stainless steel with nickel based filler metal, BNi-9, was performed to study the influence of silicon nanoparticles （NPs） on the mechanical and structural properties of the bonding area. It was found that silicon NPs act as a melting point depressant in the brazing process; the formation of silicon TLP induces the dissolution of elements of the metal filler and promotes a uniform distribution in the bonding area. Silicon NPs induce the development of smaller eutectic structures in the melting zone; it has been related to microhardness measurements, which are lower when the silicon NPs are used in the brazing process.

关键词： Brazing Nanoparticles Silicon Stainless steel

Considerations for the clinical use of stem cells in genitourinary regenerative medicine

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World Journal of Stem Cells 2021年第10期13卷 1480-1512页

作者： Christophe Caneparo Luis Sorroza-martinez Stéphane Chabaud Julie Fradette Stéphane Bolduc Centre de Recherche en Organogénèse Expérimentale de l'UniversitéLaval/LOEX Centre de Recherche du CHU de Québec-UniversitéLavalAxe Médecine RégénératriceQuebec G1J1Z4Canada Department of Surgery Faculty of MedicineUniversitéLavalQuebec G1V0A6Canada

The genitourinary tract can be affected by several pathologies which require repair or replacement to recover biological *** therapeutic strategies are challenged by a growing shortage of adequate ***,new options must be considered for the treatment of patients,with the use of stem cells(SCs)being *** different strategies can be derived from stem cell use:Cell therapy and tissue therapy,mainly through tissue *** recent advances using these approaches are described in this review,with a focus on stromal/mesenchymal cells found in adipose ***,the accessibility,high yield at harvest as well as anti-fibrotic,immunomodulatory and proangiogenic properties make adipose-derived stromal/SCs promising alternatives to the therapies currently offered to ***,an innovative technique allowing tissue reconstruction without exogenous material,the self-assembly approach,will be *** advances,more studies are needed to translate such approaches from the bench to clinics in *** the 21st century,cell and tissue therapies based on SCs are certainly the future of genitourinary regenerative medicine.

关键词： Genitourinary tract Cell therapy Tissue engineering Stem cells

Feeding a Saccharomyces cerevisiae fermentation product improves udder health and immune response to a Streptococcus uberis mastitis challenge in mid-lactation dairy cows

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Journal of Animal Science and Biotechnology 2021年第4期12卷 1351-1369页

作者： M.vailati-Riboni D.N.Coleman v.Lopreiato A.Alharthi R.E.Bucktrout E.Abdel-Hamied I.martinez-Cortes Y.Liang E.Trevisi I.Yoon J.J.Loor Department of Animal Sciences and Division of Nutritional Sciences University of IllinoisUrbanaUrbanaIL 61801USA Department of Animal Sciences Food and Nutrition(DIANA)UniversitàCattolica del Sacro Cuore29122 PiacenzaItaly Department of Animal Production College of Food and Agriculture SciencesKing Saud UniversityRiyadh 11451Saudi Arabia Department of Animal Medicine Faculty of Veterinary MedicineBeni-Suef UniversityBeni-Suef 62511Egypt Agricultural and Animal Production Department UAM-Xochimilco04960 Mexico CityMexico Diamond v Cedar RapidsIAUSA

Background:We aimed to characterize the protective effects and the molecular mechanisms of action of a Saccharomyces cerevisiae fermentation product(NTK)in response to a mastitis *** mid-lactation multiparous Holstein cows(n=9/group)were fed the control diet(CON)or CON supplemented with 19 g/d NTK for 45 d(phase 1,P1)and then infected in the right rear quarter with 2500 CFU of Streptococcus uberis(phase 2,P2).After 36-h,mammary gland and liver biopsies were collected and antibiotic treatment started until the end of P2(9 d post challenge).Cows were then followed until day 75(phase 3,P3).Milk yield(MY)and dry matter intake(DMI)were recorded *** samples for somatic cell score were collected,and rectal and udder temperature,heart and respiration rate were recorded during the challenge period(P2)together with blood samples for metabolite and immune function *** were analyzed by phase using the PROC MIXED procedure in *** were used for transcriptomic analysis via RNA-sequencing,followed by pathway ***:DMI and MY were not affected by diet in P1,but an interaction with time was recorded in P2 indicating a better recovery from the challenge in NTK compared with *** reduced rectal temperature,somatic cell score,and temperature of the infected quarter during the *** data supported these findings,as NTK supplementation upregulated mammary genes related to immune cell antibacterial function(e.g.,CATHL4,NOS2),epithelial tissue protection(***17C),and anti-inflammatory activity(e.g.,ATF3,BAG3,IER3,G-CSF,GRO1,ZFAND2A).Pathway analysis indicated upregulation of tumor necrosis factorα,heat shock protein response,and p21 related pathways in the response to mastitis in NTK *** pathways for detoxification and cytoprotection functions along with the tight junction pathway were also upregulated in NTK-fed ***:Overall,results highlighted molecular networks involved in the protective effect

关键词： Dairy cow Mastitis RNA-sequencing Saccharomyces cerevisiae fermentation product Udder health