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In Vitro-Propagation of Agave tequilana Weber cv.azul in a Temporary Immersion System

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Phyton-International Journal of Experimental Botany 2022年第1期91卷 83-96页

作者： Otilio Vázquez-Martínez Héctor Gordon Núñez-Palenius Eugenio M.Pérez-Molphe Balch Mauricio Valencia-Posadas Luis Pérez-Moreno Graciela M.L.Ruiz-Aguilar M.Gómez-Lim División de Ciencias de la Vida Universidad de GuanajuatoIrapuato36500México departamento de Química Centro de Ciencias BásicasUniversidad Autónoma de AguascalientesAguascalientes20131México departamento de ingeniería Genética CINVESTAV Unidad IrapuatoIrapuato36500México

In Mexico,there is a need to produce large quantities of plantlets for the establishment and replanting of blue(cv.azul)agave production areas.Most of these plots are within the origin denomination area(DOT,Spanish acronym)of the distilled product of this plant,known as tequila.The objective of this study was to develop an in vitropropagation protocol for Agave tequilana Weber cv.azul using segmented stems in both:solid and liquid media.A disinfection and in vitro technique were developed to obtain shoots,through plantlets collected in commercial plots,which attained 100%surface-disinfection and budding rate.At the multiplication stage,the effects of 6-Benzylaminopurine(BA)(0.0,4.4 and 13.2μM)and kinetin(0.0,9.4,18.8 and 37.6μM)were evaluated on lateralshoot production of segmented sagittal stems.These were cultivated on Murashige&Skoog(MS)medium,with the addition of 3.0%sucrose and 8 g L−1 agar.It was observed that BA and kinetin increased the number of shoots per explant,obtaining up to 18 and 26,respectively.Furthermore,it was found that just the sagittal segmentation of explants increased axillary budding.On the other hand,segmented-stem bases were grown in MS liquid medium with 3.0%sucrose,inside a RITAsystem,programmed by a 5 min immersion step with a frequency of every 4 h.The effect of Indole−3-Acetic acid(IAA)(0.57,2.9,5.7μM)was evaluated,while maintaining a concentration of BA(13.2μM).It was observed that the greatest concentration of IAA led to the formation of more than 20 buds per explant.These results offer a new methodology to increase the efficiency of A.tequilana Weber cv.azul-in vitro multiplication by sagittal segmentation of stems and the addition of BA and/or IAA.

关键词： Plant tissue culture stem-disk culture tequila in vitro culture

Cu-WC复合材料涂层的受限烧结和磨损性能（英文）

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Transactions of Nonferrous Metals Society of China 2017年第10期27卷 2214-2224页

作者： J.L.CABEZAS-VILLA L.OLMOS H.J.VERGARA-HERNáNdeZ O.JIMéNEZ P.GARNICA D.BOUVARD M.FLORES División de Estudios de Posgrado e Investigación Tec NM/Instituto Tecnológico de Morelia INICIT Universidad Michoacana de San Nicolás de HidalgoFco.J.Mujica S/N Universidad de Guadalajara Departamento de Ingeniería de Proyectos Univ.Grenoble Alpes CNRS SIMa P

采用固态烧结法制备Cu-WC金属基复合材料涂层。将不同体积分数(5%-30%)的WC增强颗粒与Cu颗粒混合,然后在还原性气氛和垂直膨胀计中于1000°C进行烧结。结果表明,复合材料涂层的烧结动力学受基体材料和WC颗粒的影响,WC颗粒能减缓粉末径... 详细信息

采用固态烧结法制备Cu-WC金属基复合材料涂层。将不同体积分数(5%-30%)的WC增强颗粒与Cu颗粒混合,然后在还原性气氛和垂直膨胀计中于1000°C进行烧结。结果表明,复合材料涂层的烧结动力学受基体材料和WC颗粒的影响,WC颗粒能减缓粉末径向和轴向的致密化。复合材料涂层紧实地粘附于基体上,而WC颗粒随机分布在基体中。与未添加增强剂的样品相比,添加了WC增强剂的样品的显微硬度增加,磨损量降低至原来的1/17。样品在载荷为5 N条件下的主要磨损机理为磨粒磨损,当WC增强剂的体积分数为20%时复合涂层的性能最优。

关键词：受限烧结膨胀法干滑动磨损显微硬度金属基复合材料涂层

放电等离子烧结添加TiC开孔钛基复合材料的磨损模式（英文）

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Transactions of Nonferrous Metals Society of China 2019年第8期29卷 1653-1664页

作者： I. FARíAS L. OLMOS O. JIMéNEZ M. FLORES A. BRAEM J. VLEUGELS departamento de ingeniería de Proyectos Universidad de Guadalajara 45100 Zapopan Jalisco México Instituto de Investigaciones en Ciencias de la Tierra - INICIT Universidad Michoacana de San Nicolás de Hidalgo 58060 Morelia Michoacán México KU Leuven department of Materials Engineering Kasteelpark Arenberg 44 B-3001 Heverlee Belgium

采用放电等离子烧结法制备具有开孔隙的钛基复合材料(TMCs),研究添加TiC增强颗粒对材料摩擦性能的影响。材料中含有同等摩尔比的Ti和TiH2以及不同体积分数的TiC(0、3%、10%和30%),烧结温度为850℃。采用纳米压痕和磨损试验评估材料的纳... 详细信息

采用放电等离子烧结法制备具有开孔隙的钛基复合材料(TMCs),研究添加TiC增强颗粒对材料摩擦性能的影响。材料中含有同等摩尔比的Ti和TiH2以及不同体积分数的TiC(0、3%、10%和30%),烧结温度为850℃。采用纳米压痕和磨损试验评估材料的纳米硬度和耐磨性能,摩擦试验采用球-平面接触往复滑动模式。结果显示,随着TiC含量的增加,材料的纳米硬度从5 GPa增加到14 GPa。当TiC含量为10%时,材料的摩擦因数最低(0.2),磨损率也最低。当TiC含量较低时,样品发生粘着磨损,并伴随严重的塑性变形;当TiC含量适中时,样品表面形成机械混合层(MML);当TiC含量较高时,样品的主要磨损机制为磨粒磨损。总之,随着TiC含量的变化,材料的磨损机制、摩擦因数和磨损量也随之变化。

关键词：多孔钛放电等离子烧结磨损钛基复合材料

Cotton pads-derived carbon materials/reduced graphene oxide modified with polypyrrole for electrode of supercapacitors

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Journal of Energy Chemistry 2024年第7期94卷 41-53页

作者： Ofelia M.Arias-Pinedo Elvis O.López Ivonne E.Monje R.Soria-Martínez Antony Bazan-Aguilar Clemente Alfredo Luyo Caycho Gabriel ángel Planes Angélica María Baena-Moncada Laboratorio de Investigación de Electroquímica Aplicada Facultad de Ciencias de la Universidad Nacional de Ingeniería department of Experimental Low Energy Physics Brazilian Center for Research in Physics (CBPF) 3. Universidad Tecnológica del Perú Center for the development of Advanced Materials and Nanotechology Universidad Nacional de Ingeniería departamento de Química Universidad Nacional de Río Cuarto Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA)

This study investigates the influence of electropolymerization conditions on the deposition of polypyrrole(PPy) onto cotton-derived carbon fiber (CF) modified with reduced graphene oxide (rGO) for supercapacitors applications using an experimental/theorical approach.The surface modification of CF by r GO and/or by PPy electrodeposited at 10,25 and 50 mV s-1was thoroughly examined physicochemical and electrochemically.Composite electrodes comprising CF-rGO-PPy,synthesized via electropolymerization at25 m V s-1,demonstrated a remarkable increase in capacitance,showcasing～742 F g-1compared to153 F g-1for CF.SEM,N2-surface area,XPS,and TD-DFT approach revealed that the higher capacitance observed in CF-rGO-PPy electrodes underscores the influence of morphology and charged nitrogen species on the electrochemical performance of these modified electrodes.Notably,this electrode material achieves a specific capacitance retention of～96%of their initial capacitance after 10000 cycles at 0.5 A g-1measured in a two-electrodes cell configuration.This work also discusses the influence of the scan rate used for pyrrole electropolymerization on the pseudocapacitance contribution of PPy and its possible effect on the porosity of the material.These results highlight the importance of appropriate electropolymerization conditions that allow obtaining the synergistic effect between CF,rGO and PPy.

关键词： Cotton pads-derived carbon fibers PPy rGO Supercapacitors TD-DFT

KnowID:An Architecture for Efficient Knowledge-Driven Information and Data Access

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Data Intelligence 2020年第4期2卷 487-512页

作者： Pablo Rubén Fillottrani C.Maria Keet departamento de Ciencias e ingeniería de la Computación Universidad Nacional del SurBahía BlancaBuenos Aires 8000Argentina Comisión de Investigaciones Científicas Provincia de Buenos AiresArgentina department of Computer Science University of Cape TownRondebosch 7700South Africa

Modern information systems require the orchestration of ontologies,conceptual data modeling techniques,and efficient data management so as to provide a means for better informed decision-making and to keep up with new requirements in organizational needs.A major question in delivering such systems,is which components to design and put together to make up the required“knowledge to data”pipeline,as each component and process has trade-offs.In this paper,we introduce a new knowledge-to-data architecture,KnowID.It pulls together both recently proposed components and we add novel transformation rules between Enhanced Entity-Relationship(EER)and the Abstract Relational Model to complete the pipeline.KnowID’s main distinctive architectural features,compared to other ontology-based data access approaches,are that runtime use can avail of the closed world assumption commonly used in information systems and of full SQL augmented with path queries.

关键词： Extended entity-relationship diagrams Abstract relational model Ontology-based data access

Plant cell wall-mediated disease resistance:Current understanding and future perspectives

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Molecular Plant 2024年第5期17卷 699-724页

作者： Antonio Molina Lucıa Jorda Miguel Angel Torres Marina Martın-Dacal Diego Jose Berlanga Patricia Fernandez-Calvo Elena Gomez-Rubio Sonsoles Martın-Santamarıa Centro de Biotecnología y Genómica de Plantas Universidad Politécnica de Madrid(UPM)-Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria(INIA/CSIC)Campus de Montegancedo UPMPozuelo de Alarcon(Madrid)Spain departamento de Biotecnologıa-Biología Vegetal Escuela Técnica Superior de Ingenierıa AgronomicaAlimentarıa y de BiosistemasUPMMadridSpain Centro de Investigaciones Biologicas Margarita Salas Consejo Superior de Investigaciones Científicas(CSIC)Ramiro de Maeztu 928040 MadridSpain Misión Biológica de Galicia Consejo Superior de Investigaciones Científicas(CSIC)Campus de Montegancedo UPMPozuelo de Alarcón(Madrid)Spain

Beyond their function as structural barriers,plant cell walls are essential elements for the adaptation of plants to environmental conditions.Cell walls are dynamic structures whose composition and integrity can be altered in response to environmental challenges and developmental cues.These wall changes are perceived by plant sensors/receptors to trigger adaptative responses during development and upon stress perception.Plant cell wall damage caused by pathogen infection,wounding,or other stresses leads to the release of wall molecules,such as carbohydrates(glycans),that function as damage-associated molecular patterns(DAMPs).DAMPs are perceived by the extracellular ectodomains(ECDs)of pattern recognition receptors(PRRs)to activate pattern-triggered immunity(PTI)and disease resistance.Similarly,glycans released from the walls and extracellular layers of microorganisms interacting with plants are recognized as microbe-associated molecular patterns(MAMPs)by specific ECD-PRRs triggering PTI responses.The number of oligosaccharides DAMPs/MAMPs identified that are perceived by plants has increased in recent years.However,the structural mechanisms underlying glycan recognition by plant PRRs remain limited.Currently,this knowledge is mainly focused on receptors of the LysM-PRR family,which are involved in the perception of various molecules,such as chitooligosaccharides from fungi and lipo-chitooligosaccharides(i.e.,Nod/MYC factors from bacteria and mycorrhiza,respectively)that trigger differential physiological responses.Nevertheless,additional families of plant PRRs have recently been implicated in oligosaccharide/polysaccharide recognition.These include receptor kinases(RKs)with leucine-rich repeat and Malectin domains in their ECDs(LRR-MAL RKs),Catharanthus roseus RECEPTOR-LIKE KINASE 1-LIKE group(CrRLK1L)with Malectin-like domains in their ECDs,as well as wall-associated kinases,lectin-RKs,and LRR-extensins.The characterization of structural basis of glycans recognition by these new plant receptors will shed light

关键词： Arabidopsis thaliana cell wall damage-associated molecular patterns DAMPs disease resistance glycans oligosaccharides pattern-triggered immunity PTl pattern recognition receptor PRRs

Reassessment of Prejanopterus curvirostris, a Basal Pterodactyloid Pterosaur from the Early Cretaceous of Spain

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Acta Geologica Sinica(English Edition) 2012年第6期86卷 1389-1401页

作者： Xabier PEREDA-SUBERBIOLA Fabien KNOLL José Ignacio RUIZ-OMEACA Julio COMPANY Fidel TORCIDA FERNNdeZ-BALDOR Universidad del País Vasco/Euskal Herriko Unibertsitatea Facultad de Cienciay TecnologíaDpto.Estratigrafíay Paleontología departamento de Paleobiología Museo Nacional de Ciencias Naturales-CSIC Museo del Jurásico de Asturias (MUJA) departamento de Geología Universidad de Oviedo departamento de ingeniería del Terreno Universidad Politécnica de Valencia Colectivo Arqueológico-Paleontológico de Salas (C.A.S.) Museo de Dinosaurios

Prejanopterus curvirostra, from the Early Cretaceous of La Rioja province, was the first pterosaur genus and species described from Spain. The material comprises disarticulated cranial and postcranial remains from several individuals. The fossil-bearing bed is assigned to the lacustrine Leza Formation （eastern Cameros Basin, NW margin of the Iberian Range）. This unit is regarded as either Berriasian-Valanginian or Barremian-Aptian. Prejanopterus curvirostris （specific name emended） was originally diagnosed on the basis of several characters of which the most significant was a lateral curvature of the rostrum. Re-examination of the holotype （rostrum） and paratype （partial rostrum with teeth） indicates that there is no genuine sideways bend of the preserved premaxilla-maxilla segments, but a slight dorsal curvature. Prejanopterus is characterized by a unique combination of characters： an emended diagnosis is provided. In contrast with previous estimates, the wing span of Prejanopterus was probably not much （if ever） in excess of 2 m. A phylogenetic analysis suggests that Prejanopterus is a basal pterodactyloid positioned between Pterodactylus and Cycnorhamphus- Gallodactylus. Prejanopterus represents the first evidence of Pterodactylidae in the Early Cretaceous of the Iberian Peninsula.

关键词： Pterosauria Prejanopterus Leza Formation Early Cretaceous La Rioja Spain

本地混合菌群微生物氧化难处理含金硫化精矿（英文）

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Transactions of Nonferrous Metals Society of China 2017年第5期27卷 1143-1149页

作者： N. MARCHEVSKY M. M. BARROSO QUIROGA A. GIAVENO E. DONATI Centro de Investigación y desarrollo en Fermentaciones Industriales (CINdeFI CCT LA PLATA-CONICETUNLP) Facultad de Ciencias Exactas Universidad Nacional de La Plata Calle 50 N° 227 1900 La Plata Argentina departamento de Minería Facultad de Ciencias Físico-Matemáticas y Naturales Universidad Nacional de San Luis Chacabuco 917 5700 San Luis Argentina Instituto de Investigación y desarrollo en ingeniería de Procesos Biotecnología y Energías Alternativas (PROBIEN CONICET-UNCo) Departamento de Química Facultad de Ingeniería Universidad Nacional del Comahue Buenos Aires 1400 8300 Neuquén Argentina

采用含铁氧化菌和硫氧化菌的混合嗜中温菌群浸出阿根廷Andacollo矿的含金硫化浮选精矿。实验在摇瓶中进行,矿浆浓度为10%,采用pH 1.8的含亚铁离子的基础盐溶液作为介质。采用不同的方法对浸出液的pH值、氧化还原电位、亚铁离子和总金属... 详细信息

采用含铁氧化菌和硫氧化菌的混合嗜中温菌群浸出阿根廷Andacollo矿的含金硫化浮选精矿。实验在摇瓶中进行,矿浆浓度为10%,采用pH 1.8的含亚铁离子的基础盐溶液作为介质。采用不同的方法对浸出液的pH值、氧化还原电位、亚铁离子和总金属浓度进行测定。结果表明,该种混合菌能够很好地还原浸出该难处理金矿,金的回收率可达91.6%,同时,铜和锌的浸出率也较高。动力学研究表明金属的溶解符合收缩核模型。其中,铜的溶解速率受生成产物层的扩散控制,而锌的溶解没有明显的控制步骤。

关键词：生物氧化难处理金矿混合菌动力学分析

Strain Influence on the Precipitation Kinetic Nb-V Microalloyed HSLA Steel

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Journal of Iron and Steel Research(International) 2011年第S1期18卷 278-281页

作者： Cartaya Elio Armando Cabrera José María Prado José Manuel departamento de Ciencia de Materiales e ingeniería Metalúrgica ETSEIBUniversidad Politécnica de Catalu a Av.Diagonal 64708028 BarcelonaSpain departamento de Manufactura y Materiales Facultad de Ingeniería MecánicaUniversidad de Oriente90400 Santiago de CubaCuba Fundación CTM Centro Tecnológico Av.Bases de Manresa 108242 ManresaSpain

The strain induced effect on the precipitation kinetics of a high strength low alloy (HSLA) steel microalloyed with Nb-V was investigated.The stress relaxation method was employed to determine the dependence of the precipitation-time-temperature curves (PTT) on previous strain.Relaxation tests were performed over a temperature range of 850 to 1150 oC at a constant strain rate of 0.1 s-1 at three deformation levels,namely 5,15 and 25 pct.Field emission scanning electron microscopy (FESEM) was used to study the progress of precipitation on samples obtained by interrupted relaxation test at different times.Results display the acceleration kinetics at increasing strain.Theoretical models are discussed and compared with the present experimental results.

关键词： strain induced precipitation kinetic HSLA stress relaxation PTT