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Alkyl-chain branched effect on the aggregation and photophysical behavior of polydiarylfluorenes toward stable deep-blue electroluminescence and efficient amplified spontaneous emission

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Chinese Chemical Letters 2019年第11期30卷 1959-1964页

作者： Lili Sun Ning Sun Lubing Bai Xiang An Bin Liu Chen Sun Lixiang Fan Chuanxin Wei Yamin Han Mengna Yu Jinyi Lin Dan Lu Ning Wang Linghai Xie Kang Shen Xinwen Zhang Yanan Xu juan Cabanillas-gonzalez Wei Huang Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech University(NanjingTech)Nanjing 211816China Key Laboratory for Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts&TelecommunicationsNanjing 210023China Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical University(NPU)Xi'an 710072China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China Madrid Institute for Advanced Studies(IMDEA Nanociencia) Ciudad Universitaria de CantoblancoCalle Faraday 9Madrid 28049Spain

The control of the condensed superstructure of light-emitting conjugated polymers(LCPs)is a crucial factor to obtain high performance and stable organic optoelectronic ***-chain engineering strategy is an effective platform to tune inter chain aggregation and photophysical behaviour of ***,we systematically investigated the alkyl-chain branched effecton the conformational transition and photophysical behaviour of polydiarylfluorenes toward efficient blue optoelectronic *** branched side chain will improve materials solubility to inhibit interchain aggregation in solution according to DLS and optical analysis,which is useful to obtain high quality ***,our branched PEODPF,POYDPF pristine film present high luminance efficiency of 36.1%and 39.6%,enhanced about 20%relative to that of *** to the liner-type sides'chain,these branched chains also suppress chain planarization and improve film morphological stability ***,the branched polymer also had excellent stable amplified spontaneous emission(ASE)behaviour with low threshold(4.72μJ/cm2)and a center peak of 465 nm,even thermal annealing at 220℃in the air ***,side-chain branched strategy for LCPs is an effective means to control interchain aggregation,film morphology and photophysical property of LCPs.

关键词： Light-emitting conjugated polymers Branched effect Aggregation behavior Robust deep-blue emission Efficient optoelectronic devices

Socioeconomic Aspects for Coastal Mollusk Commercial Fishing in Costa Chica,Guerrero,Mexico

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Natural Resources 2018年第6期9卷 229-241页

作者： Lizeth Galeana-Rebolledo Rafael Flores-Garza juan Violante-gonzalez Pedro Flores-Rodriguez Sergio Garcia-Ibanez Victor Landa-Jaime Arcadio Valdes-gonzalez Centro de Ciencias de Desarrollo Regional Pino s/n.Col.El RobleAcapulcoMéxico Facultad Ecologia Marina Gran Via TropicalN°20Fraccionamiento Las PlayasAcapulcoMexico Departamento de Estudios para el Desarrollo Sustentable de Zonas Costeras San Patricio-MelaqueMexico Facultad de Ciencias Biologicas Universidad Autonoma de Nuevo LeonCiudad UniversitariaSan Nicolas de los GarzaMexico

An important part of the fishing activity in Mexico is carried out in the coastal strip and has a strong social, economic and ecological importance. In the state of Guerrero, mollusks fishing is coastal and craftwork activity focused on a small number of species and without information on biology and reproductive or ecological aspects for most species caught. This research was carried out in the Costa Chica region, Guerrero, Mexico and the aims were: 1) To analyze the socioeconomic features of cooperative societies of fishing production;and 2) To know the diversity of mollusks caught by coastal fishing and the species that have the greatest importance in fishing. From February to April 2013-2015, seven fish coop units, four piers and places where seafood is sold were visited. For the socio-economic analysis and the determination of the species that have more importance in the coastal fishing, a total of 67 surveys were applied. In order to determine the cast of species, the specimens captured by the fishermen were used, which were identified and counted. A total of 67 interviews were analyzed and an average of $1806.00 was estimated as weekly economic income just as a product of fishing, it was also estimated that on average the fishermen work 4.3 days a week. Fisheries cooperatives market most of their produce directly to restaurateurs and locals on the piers. Replacement of older adults by young fishermen from the same region was observed, most are adults between 22 and 39 years old. 25 species of mollusks of economic importance were registered for the coastal fishermen of the Costa Chica. Six species were identified as the main target for catching fishermen. The fishing of mollusks in Costa Chica is not subject to any type of control, which has led to overfishing reflected in the decline sizes and banks in populations of commercial importance.

关键词： Molluscs Coastal Fishing Socioeconomic Fisherman

燕雀亚科鸟类的贝叶斯系统发生:非洲鹂雀的分类地位及朱雀属的进化与异质起源(英文)

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动物学报 2007年第5期53卷 826-834页

作者： Antonio ARNAIZ-VILLENA juan MOSCOSO Valentin RUIZ-DEL-VALLE Javier gonzalez Raquel REGUERA Michael WINK juan I.SERRANO-VELA Department of Immunology Universidad ComplutenseThe Madrid Regional Blood Center Institut für Pharmazie und Molekulare Biotechnologie-Abteilung Biologie Universitt Heidelberg

鹂雀(Linurgus olivaceus)是非洲热带森林中一种独特的鸣禽,为鹂雀属(Linurgus)的惟一物种。在已有的研究中,通过对鹂雀和雀形目现存鸟类中每个科及亚科至少一个物种的线粒体DNA序列测定,分析了鹂雀与其它现存雀形目鸟类的系统发生关系... 详细信息

鹂雀(Linurgus olivaceus)是非洲热带森林中一种独特的鸣禽,为鹂雀属(Linurgus)的惟一物种。在已有的研究中,通过对鹂雀和雀形目现存鸟类中每个科及亚科至少一个物种的线粒体DNA序列测定,分析了鹂雀与其它现存雀形目鸟类的系统发生关系;在遗传上,对鹂雀与金丝雀、金翅雀及燕雀亚科其它鸟类亦有比较研究。本研究共使用了燕雀亚科83种鸟类,重点对该亚科的系统发生进行了修订。使用贝叶斯法构建了系统发生树,结果表明:鹂雀属于燕雀亚科,系统发生树中聚在金翅雀族(Carduelini),与金丝雀属(Serinus)、金翅雀属(Carduelis)及交嘴雀属(Loxia)的种类形成一组;在系统发生中,鹂雀可能是一个基部物种,它同金丝雀属和金翅雀属鸟类一同进化并分歧出来。在本研究中未能涉及的一些已灭绝种类,可能与鹂雀有着较近的遗传学关系。另一方面,研究也表明锡嘴雀(Coccotharustes coccothraustes)肯定包括在欧亚蜡嘴雀(蜡嘴雀属Eophona和拟蜡嘴雀属Mycerobas)中,美洲的朱雀(Carpodacus)可能是从亚洲种类分歧出来并经过进化辐射形成。

关键词：朱雀锡嘴雀蜡嘴雀家朱雀鹂雀雀形目鸣禽

Commercially Important Marine Mollusks for Human Consumption in Acapulco,Mexico

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Natural Resources 2012年第1期3卷 11-17页

作者： Rafael Flores-Garza Sergio Garcia-Ibanez Pedro Flores-Rodriguez Carmina Torreblanca-Ramirez Lizeth Galeana-Rebolledo Arcadio Valdes-gonzalez Arquimedes Suastegui-Zarate juan Violante-gonzalez Unidad Academica de Ecologia Marina Universidad Autonoma de GuerreroAcapulcoMexico Facultad de Ciencias Biologicas Universidad Autonoma de Nuevo LeonCiudad UniversitariaSan Nicolas de los GarzaMexico

Acapulco, offers for international tourism a variety of mollusks that are delightful to the palate and a source of economic revenue for its residents;however there are no studies on the species consumed. Furthermore, data from the State agencies responsible for registration of these products are unclear. This work is aimed to develop an inventory of Gastropoda, Bivalvia and Polyplacophora marketed as food, to gain knowledge on the species native to Acapulco and the introduced ones. The places that sell shellfish were interviewed from 2008 to 2011 in order to determine the geographical origin of their products being offered. We identified 42 species: 15 species of gastropods are captured locally and three are introduced. On Bivalvia, seven species are caught locally and 16 are introduced. There are Bivalvia species caught locally;however, their capture is now unaffordable. It is likely that this situation is due to overfishing and/or the transmission of diseases or parasites caused by the introduction of foreign living organisms to Acapulco. Within the list of species caught locally, there are some listed as of subject protection;all of these organisms are exploited in Acapulco without control. The wealth of marine mollusks for human consumption in Acapulco is very high. The capture does not satisfy local market demand and the amount of introduced species is very high. It is necessary to make a diagnostic analysis of mollusk fishing industry in the state of Guerrero, also implement a management program, including the sanitary measures and control of introduced species, as they arrive alive and stay alive in the waters of Acapulco. A significant number of native species that have aquaculture potential should be studied for commercial culture practice as well as to conduct studies on their biology on those species that are considered over-exploited and allow recovery of the species in its habitat.

关键词： Mollusks Commercial Consumption Human Acapulco México

In vitro antioxidant,antilipoxygenase and antimicrobial activities of extracts from seven climbing plants belonging to the Bignoniaceae

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Journal of Integrative Medicine 2018年第4期16卷 255-262页

作者： Carola Analla Torres Cristina Marisel Perez Zamora Maria Beatriz Nunez Ana Maria gonzalez Laboratory of Microbiology and Pharmaceutical Technology Department of Basic and Applied SciencesNational University of Chaco AustralPresidencia Roque Saenz Pena 3700ChacoArgentina National Council for Scientific and Technical Research(CONICET) Godoy Cruz 2290Buenos Aires C1425FQBArgentina Institute of Botany of the Northeast(IBONE-CONICET) Sargento Juan Bautista Cabral 2131CorrientesArgentina

Objectives： This study aimed to evaluate the in vitro antioxidant capacity, to determine the anti-inflammatory effect due to lipoxygenase inhibition and to test the antimicrobial activity of ethanolic extracts from leaves of seven climbing species belonging to the Bignoniaceae family. These species are Adenocalyrnrna rnarginatum （Cham.） DC., Amphilophium vauthieri DC., Cuspidaria convoluta （VEIL） A. H. Gentry, Dolichandra dentata （K. Schum.） L. G. Lohmann, Fridericia caudigera （S. Moore） L. G. Lohmann, Fridericia chica （Bonpl.） L. G. Lohmann and Tanaecium selloi （Spreng.） L. G. Lohmann. Methods： The antioxidant activity was evaluated using three methods, 2,2＇-azino-bis（3-ethylbenzothiazo line-6-sulfonic acid）（ABTS）, 2,2-diphenyl-l-picrylhydrazyl （DPPH）, and ferric reducing antioxidant power. Lipoxygenase-inhibiting activity was assayed spectrophotometrically; the result was expressed as percent inhibition. The antimicrobial activity was assessed using the agar disk diffusion method. Minimal inhibitory concentration （MIC） and minimal bactericidal]fungicidal concentration were also determined for each extract against 12 pathogenic bacterial strains of Staphylococcus aureus and seven fungal strains of the Candida genus. The identification of the major compounds present in the most promising extract was established by high-performance liquid chromatography-tandem mass spectrometry. Results： C convoluta, F. caudigera, and F. chica exhibited the best antioxidant activity by scavenging DPPH and ABTS~ radicals and reducing Fe3＋ ion. These extracts showed a notable inhibition of lipnxygenase. F. caudigera was found to have the lower MIC value against S. aureus strains and six Candida species. The extracts of F. caudigera and C. convoluta were active even against methicillin-resistant S. aureus. C convoluta had higher total phenol content, better antioxidant activity and superior anti- inflammatory and antimicrobial activity. The main phenolic compounds found in this extract

关键词： Cuspidaria Fridericia Antioxidants Lipoxygenase Antimicrobials Herbal drugs Free radical scavengers

Circulation-Type Classification over Mexico by the Era-Interim Database and Cost733

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Atmospheric and Climate Sciences 2018年第2期8卷 286-305页

作者： Sergio Natan gonzalez-Rocha juan Cervantes-Perez Fredy Juarez-Perez Z.Arturo gonzalez-Cerezo Lizeth Rios Velasco Ines Palomino-Mendez Jose Maria Baldasano Recio Universidad Veracruzana VeracruzMexico Barcelona Supercomputing Center BarcelonaSpain Instituto Tecnologico Superior de Alama Temapache XoyotitlaMexico Universitat Politecnica de Catalunya BarcelonaSpain

In this paper an approach of a synoptic classification by cluster k-means (CKM) and the European Großwettertypes (GWT) was performed and executed in COST733 package. The methodology used a CKM with nine clusters and GWT with 16. The COST733 evaluated a dataset of 30-years since 1986 to 2015. The variables selected were mean sea level pressure (mslp), geopotential height (z500 and z850), wind speed and direction (u10, v10 and u, v at 850 hPa) and relative vorticity (vo) with a 0.75° × 0.75° resolution of the data grid at 00:00, 06:00, 12:00 and 18:00 UTC and 0 steps. These results were evaluated using COST733 to find the quality of measurements by the explained variance (EV) or reduction ratio in error and pseudo F value (PF) to determine the certainty of the results. GWT-16 showed better yearly values in the evaluation with 32.7 (EV) and 354.3 (PF) against the CKM-9 of 54.2 (EV) and 1621.8 (PF). Finally, it was concluded that GWT-16 could be used for classification of synoptic systems over Mexico and the analysis of meteorological phenomena triggers on increases or decreases of atmospheric pollution in areas over Mexico.

关键词： Cluster k-Mean Synoptic Patterns European Groβwettertypes

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适于多工况的高效驱动系统

现代制造 2014年第45期 28-29页

作者： juan CARLOS gonzalez VILLAR

从专业人士处得知：当生产设备的技术水平提高到目前水平的一倍时，西欧的能源消耗可以减少30％。从政策方面来讲，始终提倡要有前瞻性的节能意识。因此，在德国占能源消耗总量25％的生产企业积极的参与了有关节能的讨论。为了激励这些... 详细信息

从专业人士处得知：当生产设备的技术水平提高到目前水平的一倍时，西欧的能源消耗可以减少30％。从政策方面来讲，始终提倡要有前瞻性的节能意识。因此，在德国占能源消耗总量25％的生产企业积极的参与了有关节能的讨论。为了激励这些生产企业节约能源，在合理的提高能源利用效率的基础上要求中小型企业使用具有更高效率的跨领域技术，这其中除了驱动技术之外还包括了空气压缩机、鼓风机和照明等。

关键词：驱动系统多工况能源利用效率驱动技术能源消耗节能意识生产企业中小型企业

西班牙拉帕尔马岛海中的钻石与三毛梦中的故乡

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环球人文地理 2023年第15期 144-153页

作者：唐楠 Tulda rh2010 juan CARLOS MUNOZ unai Alberto gonzalez Kruno Kartus Bruder Jakob Curioso.Photography Lars Gerhardts gizmocat flickr

人生最诗意的旅行，应当发生在拉帕尔马岛。这座小岛，是三毛与荷西爱情的见证；是星空的礼物，海豚的乐园；是科学家的殿堂，也是徒步者的胜地……非洲以西，蔚蓝的大西洋中，坐落着一片美丽的火山岛——加那利群岛。它位于摩洛哥以西...

人生最诗意的旅行，应当发生在拉帕尔马岛。这座小岛，是三毛与荷西爱情的见证；是星空的礼物，海豚的乐园；是科学家的殿堂，也是徒步者的胜地……非洲以西，蔚蓝的大西洋中，坐落着一片美丽的火山岛——加那利群岛。它位于摩洛哥以西100余公里处，由7个行政岛屿组成，被作家三毛亲切地称为“大海中的七颗钻石”，是西班牙位置最南的群岛自治区，也是西班牙政府认可的八个具有“历史国家”地位的地区之一。

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Statistical data driven approach of COVID-19 in Ecuador: R_(0) and R_(t) estimation via new method

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Infectious Disease Modelling 2021年第1期6卷 232-243页

作者： Raúl Patricio Fernandez-Naranjo MSc Eduardo Vasconez-gonzalez MD Katherine Simbana-RiveraMD,MSc Lenin Gomez-Barreno MD juan S.Izquierdo-Condoy MD Domenica Cevallos-RobalinoMD,MPH(c) Esteban Ortiz-Prado MD,MSc,MPH One Health Research Group Faculty of MedicineUniversidad de las AmericasQuitoEcuador Resident of Intensive Care Unit Hospital Quito Sur IESSQuitoEcuador

The growth of COVID-19 pandemic throughout more than 213 countries around the world have put a lot of pressures on governments and health services to try to stop the rapid expansion of the *** 2009,H1N1 Influenza pandemic,statistical and mathematical methods were used to track how the virus spreads around *** of these models that were developed at the beginning of the XXI century are based on the classical susceptible-infected-recovered(SIR)model developed almost a hundred years *** evolution of this model allows us to forecast and compute basic and effective reproduction numbers(R_(t) and R_(0)),measures that quantify the epidemic potential of a pathogen and estimates different *** this study,we present a traditional estimation technique for R_(0) with statistical distributions by best fitting and a Bayesian approach based on continuous feed of prior distributions to obtain posterior distributions and computing real time R_(t).We use data from COVID-19 officially reported cases in Ecuador since the first confirmed case on February *** of the lack of data,in the case of R_(0) we compare two methods for the estimation of these parameters below exponential growth and maximum likelihood *** do not make any assumption about the evolution of cases due to limited information and we use previous methods to compare scenarios about R_(0) and in the case of R_(t) we used Bayesian inference to model uncertainty in contagious proposing a new modification to the well-known model of Bettencourt and Ribeiro based on a time window of m days to improve *** R_(0) with exponential growth criteria was 3.45 and with the maximum likelihood estimation method was *** results show that Guayas,Pichincha and Manabíwere the provinces with the highest number of cases due to *** reasons explain the increased transmissibility in these localities:massive events,population density,cities dispersion patterns,and

关键词： Bayesian inference R0 COVID-19 Real time reproduction factor Basic reproduction factor Ecuador