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The Finite-dimensional Decomposition Property in Non-Archimedean Banach Spaces

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Acta Mathematica Sinica,English Series 2014年第11期30卷 1833-1845页

作者： Albert KUBZDELA Cristina perez-garcia Institute of Civil Engineering Poznań University of TechnologyUl.Piotrowo 561-138 PoznańPoland Department of Mathematics Facultad de CienciasUniversidad de CantabriaAvda.de los Castros s/n39071SantanderSpain

A non-Archimedean Banach space has the orthogonal finite-dimensional decomposition property（OFDDP） if it is the orthogonal direct sum of a sequence of finite-dimensional *** property has an influence in the non-Archimedean Grothendieck＇s approximation theory,where an open problem is the following： Let E be a non-Archimedean Banach space of countable type with the OFDDP and let D be a closed subspace of *** D have the OFDDP？ In this paper we give a negative answer to this question; we construct a Banach space of countable type with the OFDDP having a one-codimensional subspace without the *** we prove that,however,for certain classes of Banach spaces of countable type,the OFDDP is preserved by taking finite-codimensional subspaces.

关键词： Non-Archimedean Banach spaces finite-dimensional decomposition property orthogonal base

Retinal remodeling following photoreceptor degeneration causes retinal ganglion cell death

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Neural Regeneration Research 2018年第11期13卷 1885-1886页

作者： Diego garcia-Ayuso Johnny Di Pierdomenico marta Agudo-Barriuso Manuel Vidal-Sanz Maria P. ViUegas-perez Departamento de Oftalmologla Facultad de Medicina Universidad de Murcia and Instituto Murciano de Investigacion Biosanitaria Hospital Virgen de la Arrixaca (IMIB-Virgen de la Arrixaca) Murcia Spain

The retina is the extension of the central nervous system that senses *** and rods,situated in the outer retina,convert light into electrical signals that travel through intermediate neurons where these are further pr... 详细信息

关键词： FG Retinal remodeling following photoreceptor degeneration causes retinal ganglion cell death Figure

Extracellular vesicles in Alzheimer’s disease:from pathology to therapeutic approaches

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Neural Regeneration Research 2023年第1期18卷 18-22页

作者： marta garcia-Contreras Avnesh S.Thakor Interventional Regenerative Medicine and Imaging Laboratory Department of RadiologyStanford UniversityPalo AltoCAUSA

Alzheimer’s disease is a progressive and fatal neurodegenerative disorder that starts many years before the onset of cognitive *** novel biomarkers for Alzheimer’s disease has the potential for patient risk stratification,early diagnosis,and disease monitoring in response to therapy.A novel class of biomarkers is extracellular vesicles given their sensitivity and specificity to specific *** addition,extracellular vesicles can be used as novel biological therapeutics given their ability to efficiently and functionally deliver therapeutic *** is critical given the huge unmet need for novel treatment strategies for Alzheimer’s *** review summarizes and discusses the most recent findings in this field.

关键词： Alzheimer’s disease brain diagnostic extracellular vesicles isolation methods microglia neurodegenerative diseases neuroinflammation neurons therapy

Residents'perception of sustainable tourism in protected mountain areas:the case of Asturias

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Journal of Mountain Science 2022年第12期19卷 3597-3614页

作者： MAGADAN-DIAZ marta RIVAS-garcia Jesus I. Faculty of Business and Communication Universidad Internacional de La RiojaAvda.de la Paz 137Logrono 26o06Spain

Spain is the country with the most Biosphere Reserves in the world,52,and Asturias,with 7,ranks first among the single-province Autonomous *** tourist interest in these natural spaces is increasing,but little or nothing is known about how the residents of these natural spaces perceive the tourist *** main objective of this research was to evaluate the residents’perceived changes in protected mountain areas in Asturias concerning the environmental,sociocultural,and economic dimensions related to tourism activity with survey methods and various quantitative *** findings obtained were the following:firstly,there were significant differences between the residents’sociodemographic characteristics and their perceptions of tourism impacts;secondly,there were positive relationships between the residents’perceived tourism economic,environmental and sociocultural impacts and their general attitude towards tourism development;and thirdly,the more positive the residents’attitude towards tourism development,the more likely residents actively support its further *** findings indicate the willingness of residents to get involved and participate in the tourism activity,so policymakers should implicate residents in decisionmaking on local tourism *** conclusion,long-term monitoring of residents’evolution of their perceptions and attitudes is necessary to achieve sustainable tourism development.

关键词： Sustainable tourism Tourists’perception Survey method Regression analysis Asturias

Driving Factors for Forest Fire Occurrence in Durango State of Mexico:A Geospatial Perspective

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Chinese Geographical Science 2010年第6期20卷 491-497页

作者： Diana Avila-Flores Marin Pompa-garcia Xanat Antonio-Nemiga Dante A Rodriguez-Trejo Eduardo Vargas-perez Javier Santillan-perez Forestry Division University of Chapingo Faculty of Forestry Juarez University of the State of DurangoRio Papaloapan and Durango Blvd Faculty of Geography Autonomous University of Mexico StateCerro de Coatepec s/nCiudad Universitaria

Forest fire is one of the major causes of forest loss and therefore one of the main constraints for sustainable forest management *** the driving factors and understanding the contribution of each factor are essential for the management of forest fire *** objective of this study is to identify variables that are spatially related to the occurrence and incidence of the forest fire in the State of Durango,*** this purpose,data from forest fire records for a five-year period were *** spatial correlations between forest fire occurrence and intensity of land use,susceptibility of vegetation,temperature,precipitation and slope were tested by Geographically Weighted Regression(GWR) method,under an Ordinary Least Square *** show that the spatial pattern of the forest fire in the study area is closely correlated with the intensity of land use,and land use change is one of the main explanatory *** addition,vegetation type and precipitation are also the main driving *** fitting model indicates obvious link between the *** fire was found to be the consequence of a particular combination of the environmental factors,and when these factors coexist with human activities,there is high probability of forest fire *** regulation of human activities is a key strategy for forest fire prevention.

关键词： forest fire Geographically Weighted Regression(GWR) land use forest management Durango State Mexico

Empowered Stakeholders: Female University Students’ Leadership During the COVID-19-Triggered On-campus Evictions in Canada and the United States

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International Journal of Disaster Risk Science 2021年第4期12卷 581-592页

作者： Haorui Wu Marla perez-Lugo Cecilio Ortiz garcia Frances Gonzalez Crespo Adriana Castillo Canada Research Chair in Resilience School of Social WorkDalhousie UniversityHalifaxNSB3H 4R2Canada Natural Hazards Center University of Colorado BoulderBoulderCO80309USA Department of Social Sciences University of Puerto Rico MayagüezMayagüezPR00682USA The RISE Network MayagüezPR00680USA

The study of disaster-specific leadership of female university students has been largely neglected,especially during on-campus emergency eviction and *** on the COVID-19-triggered,on-campus evictions across Canada and the United States,this cross-national partnership examined the out-of-province/state and international female university students’leadership during the entire eviction *** in-depth interviews,this study revealed the female university students’leadership behaviors during three stages:(1)pre-eviction:their self-preparedness formed an emotional foundation to support others;(2)peri-eviction:their attitude and leadership behavior enabled them to facilitate(psychologically and physically)their peers’eviction process;and(3)post-eviction:they continued to support their peers virtually and raised the general public’s awareness regarding the plight of vulnerable and marginalized *** article argues that the female university students’leadership that emerged during the eviction process became complementary to and even augmented the universities’official efforts and *** leadership represents empirical evidence that contributes to the existing literature on gender and leadership by demonstrating female youth as empowered stakeholders rather than as merely passive *** studies could develop detailed stratification of gender and age dimensions in order to portray a more comprehensive picture of the younger generation’s leadership in hazards and disaster research and practice.

关键词： Canada COVID-19 Female leadership Gender and disaster On-campus evictions United States University students

Preparation of Rod-like Aluminum Doped Zinc Oxide Powders by Sol-gel Technique Using Metal Chlorides and Acetylacetone Precursors

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Journal of Wuhan University of Technology(Materials Science) 2018年第6期33卷 1293-1297页

作者： KESHTKAR Javad VARGAS garcia Jorge Roberto GALAVIZ perez Jorge MARTINEZ TRINIDAD José Escuela Superior de Ingenieria Mecánica y Eléctrica Instituto Politécnico NacionalMéxico07738CDMXMéxico Escuela Superior de Ingenieria Quimica e Industrias Extractivas Instituto Politécnico NacionalMéxico07738CDMXMéxico Universidad Juárez Autònoma de Tabasco DivisiònAcadémica Multidisciplinaria de Jalpa de MéndezRibera AltaJalpa de MéndezTabasco86205México

Al-doped ZnO(AZO) powders were prepared by using metal chloride precursors and the sol-gel technique. IR peaks observed at 1590 cm-1 and 1620 cm-1indicated the formation of metal chelate as a consequence of the addition of acetylacetone to the metal chloride solution. TG-DSC analysis of the AZO gels confirmed the formation of metal chelate as evidenced by the development of several weight loss peaks accompanied by the introduction of new endothermic peaks. The resulting AZO gels were annealed at 500, 600, and 800 ℃ to study the effect of annealing temperature. XRD and SEM results showed that crystallization of AZO gels takes place around 600 ℃. Hexagonal wurtzite structure was identified as the main phase for all the samples. In addition, small shift of the XRD(002) peak coupled with XPS results from the AZO powders confirmed the successful doping of the ZnO powders. Micron sized rod-like AZO powders were uniform in dimension and morphology and remained stable even at 800 ℃.

关键词： aluminum doped ZnO rod-like metal chloride sol gel acetylacetone

Crystalline retinopathy and optical coherence tomography angiography:new insights in pathogenesis

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Annals of Eye Science 2020年第3期5卷 19-29页

作者： Jaclyn L.Kovach Diley perez garcia Bascom Palmer Eye Institute Miller School of MedicineUniversity of MiamiNaplesFLUSA

Optical coherence tomography angiography(OCTA)is a fast,non-invasive imaging modality that provides detailed information on retinal and choroidal vascular flow and macular *** offers an accurate three-dimensional view of the individual retinal vascular plexuses and the choriocapillaris which facilitates the detection of the microvascular abnormalities in a variety of macular *** perfusion indices(vessel density and flow index)are valuable parameters evaluated by OCTA that allow a quantitative interpretation of changes in the retinal vasculature that can reflect the severity of *** retinopathy encompasses a group of conditions whose distinctive feature is the presence of retinal crystals often located in the posterior *** crystalline retinopathies also demonstrate retinal vascular abnormalities as *** that the OCTA is a novel imaging modality and crystalline retinopathies are relatively rare conditions,there are currently few reports of OCTA findings associated with crystalline *** advent of OCTA allows visualization of vascular and structural changes in crystalline retinopathies that are unique and cannot be appreciated on other imaging modalities,including fluorescein angiography(FA).This article reviews novel OCTA findings which provide new insights in the pathogenesis of crystalline retinopathies,including Bietti crystalline retinopathy,talc retinopathy,macular telangiectasia type 2,tamoxifen retinopathy,and Sjögren-Larsson Syndrome maculopathy.

关键词： Crystalline retinopathy optical coherence tomography angiography(OCTA) multimodal imaging

Use of pCONUS HPC for the treatment of unruptured wide- necked bifurcation aneurysms: early clinical experience using single antiplatelet therapy

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Stroke & Vascular Neurology 2021年第1期6卷 57-64页

作者： marta Aguilar perez Victoria Hellstern Carmen Serna Candel Christina Wendl Hansjorg Bazner Oliver Gansladt Hans Henkes Neuroradiologische Klinik NeurozentrumKlinikum StuttgartStuttgartGermany Institut fur Rontgendiagnostik Zentrum fur NeuroradiologieFakultat für Medizin der Universitat RegensburgRegensburgGermany Neurologische Klinik NeurozentrumKlinikum StuttgartStuttgartGermany Neurochirurgische NeurozentrumKlinikum StuttgartStuttgartGermany Medizinische Fakultat Universitat Duisburg-EssenEssenGermany

Background In recent years,a growing number of stents and stent-like devices have become available to facilitate the treatment of challenging ***,the need for dual antiplatelet therapy can limit their use,especially in ruptured *** hydrophilic polymer coating(pHPC,phenox)is a novel glycan-based multilayer polymer that reduces platelet *** study aims to report our initial experience using the pCONUS HPC device for the treatment of unruptured wide-necked bifurcation aneurysms(WNBA)using acetylsalicylic acid(ASA)as single antiplatelet therapy(SAPT).Methods We retrospectively identified all patients who were treated with the pCONUS HPC for unruptured WNBA in a multi-staged procedure using ASA as *** were made of periprocedural complications,clinical outcome and angiographic and clinical *** We identified 15 patients with 15 *** average age was 69 years old(range,41-76).Seven aneurysms were located in the middle cerebral artery,five in the anterior communicating artery,two at the basilar tip and one in the posterior communicating *** post-treatment angiography showed five aneurysms with modified Raymond-Roy classification(mRRC)grade Ⅰ and four aneurysms with mRRC grade Ⅱ.There were no haemorrhagic *** patients developed thrombus formation during the second treatment session,all of them completely resolving after administration of glycoprotein Ⅱb/Ⅲa *** follow-up data were available for 10 patients and showed adequate occlusion(mRRC Ⅰ or Ⅱ)in eight aneurysms(80%).In-stent stenosis was observed in one patient whereas two patients showed de novo stenosis in one of the efferent *** This early experience on the use of the pCONUS HPC device suggests that it can be useful for treating unruptured WNBA under ASA as *** investigation with a randomised treatment registry and larger cohort is needed.

关键词： treatment bifurcation HPC