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Plant community on a volcano mountaintop reveals unique high-altitude vegetation in southeastern Brazil

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Journal of Mountain Science 2024年第9期21卷 3018-3030页

作者： igor Musauer KESSOUS Ruy JoséValka ALVES Nílber Gonçalves da SILVA Amilcar Walter SAPORETTI JUNIOR Biodiversity Laboratory Federal Institute of EducationScience and Technology of Southern Minas Gerais(IFSULDEMINAS)Av.Dirce Pereira Rosa300-Jardim Esperança37713-100Poços de CaldasMGBrazil department of Botany National MuseumFederal University of Rio de JaneiroQuinta da Boa Vista s.n.São Cristóvão20949-040Rio de JaneiroRJBrazil Gothenburg Global Biodiversity Centre Carl Skottsbergs Gata 22BSE 41319GothenburgSweden

Mountains exhibit a high degree of endemism and diversity,however,quantifying their biodiversity can be *** to islands,species isolation in mountainous regions results in comparable patterns of evolution and extinction,rendering their biodiversity unique and highly susceptible to anthropogenic *** topographic relief in mountains plays a crucial role in creating habitat complexity,which in turn contribute to high plant ***,we investigated plant diversity in the volcano mountaintop vegetation on the Poços de Caldas Plateau,a region situated in the ecotone between the Atlantic Forest and Cerrado,characterized by natural radiation and significant anthropogenic *** employed an automated approach through the filtering of georeferenced and non-georeferenced data to obtain a list of plant species in the ***,we statistically investigated the similarity among different high-altitude vegetations belonging to the campos de altitude from the Atlantic Forest and campos rupestres from the *** plateau exhibits high plant diversity,including 1,659 specific and infraspecific taxa,especially belonging to Asteraceae and *** analyses suggest that geographical distance is a strong predictor of dissimilarity and that the Poços de Caldas Plateau is more floristically related to the campos rupestres,despite being associated with campos de *** region possesses a unique set of biodiversity,indicating that it may be a distinct ***,we hypothesize that Pleistocene events likely influenced the conformation of the current floristic composition in the region through species interchange between the Cerrado and Atlantic *** study also highlights the few taxa assessed for conservation status and anthropogenic threats that this habitat is facing.

关键词： Atlantic Forest Biogeography Cerrado Community ecology Grassland

Experimental investigation on variability in properties of Amazonian wood species Muiracatiara ( Astronium lecointei ) and Maçaranduba ( Manilkara huberi ) focusing guitar fingerboards manufacturing

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Journal of Bioresources and Bioproducts 2021年第1期6卷 33-38页

作者： Roseli Felix da Silva Ribeiro JoséFlávio Silveira Feiteira Jayme pereira de Gouvê alexandre Furtado Ferreira Federal Fluminense University PPGEMVolta RedondaRJBrazil Federal Fluminense University PGMECVolta RedondaRJBrazil

In face of scarcity in the supply of non-traditional Brazilian woods properly treated for use in high quality musical instruments,pieces of Amazonian wood species muiracatiara(Astronium lecointei)and maçaranduba(Manilkara huberi)purchased in the common internal Brazilian timber market were *** species were pre-selected for use in fingerboards of acoustic and electric guitars due to similar properties with ebony(Diospyros crassiflora).Variabilities of elastic modulus parallel to grain and density were investigated inside wooden *** addition,referred parameters were used in calculation of speed of *** tests were performed in order to compare both species and revealed inequality for variances of dynamic elastic modulus(E_(d))and speed of sound,but equality for *** of means was also examined via unequal variance *** color differences,lower variability of *** led to the indication of this species as likely capable to substitute satisfactorily ebony in fingerboards manufacturing.

关键词： Mechanical properties variability Wood grain slope Experimental analysis Impulse excitation technique F-test

Phylogeny,identification and pathogenicity of the Botryosphaeriaceae associated with collar and root rot of the biofuel plant Jatropha curcas in Brazil,with a description of new species of Lasiodiplodia

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Fungal Diversity 2014年第4期67卷 231-247页

作者： alexandre Reis Machado Danilo Batista Pinho Olinto Liparini pereira departamento de Fitopatologia Universidade Federal de VicosaVicosa 36570-000Brazil

The global expansion of cultivation areas of Jatropha has contributed to the emergence of various *** in Brazil,the occurrence of a new disease has been reported that not only reduces the productivity but also causes the death of *** disease is associated with collar and root rot of *** morphological and phylogenetic studies(based on Internal Transcribed Spacers,β-tubulin and Translation Elongation Factor 1-αsequences),nine species of Botryosphaeriaceae were *** species include Lasiodiplodia egyptiacae,***,***,Macrophomina phaseolina,Neoscytalidium hyalinum and four Lasiodiplodia *** are proposed as new species(***,***,*** and ***).All the species in this study,except ***,are *** results show that root rot of physic nut plants is caused by complex *** study provides new information for future studies of disease management,quarantine programs and,especially,the development of resistant varieties for collar and root rot disease in ***.

关键词： Aetiology Botryosphaeriales Dothideomycetes Phylogeny Taxonomy Tropical fungi

A Novel Approach to Measuring Spatiotemporal Changes in Social Vulnerability at the Local Level in Portugal

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International Journal of Disaster Risk Science 2022年第6期13卷 842-861页

作者： Pedro Pinto Santos JoséLuís Zêzere Susana pereira Jorge Rocha alexandre Oliveira Tavares Centre for Geographical Studies Institute of Geography and Spatial PlanningTERRAUniversity of Lisbon(CEG-IGOT-ULisboa)1600-276 LisboaLAPortugal Centre for Social Studies Earth Science DepartmentScience and Technology FacultyUniversity of Coimbra(CES/DCT-FCT-UCoimbra)3000-995 CoimbraPortugal

Social vulnerability,as one of the risk components,partially explains the magnitude of the impacts observed after a *** this study,a spatiotemporally comparable assessment of social vulnerability and its drivers was conducted in Portugal,at the civil parish level,for three census *** first challenging step consisted of the selection of meaningful and consistent variables over *** were normalized using the Adjusted Mazziotta-Pareto Index(AMPI)to obtain comparable adimensional-normalized values.A joint principal component analysis(PCA)was applied,resulting in a robust set of variables,interpretable from the point of view of their self-grouping around vulnerability drivers.A separate PCA for each census was also conducted,which proved to be useful in analyzing changes in the composition and type of drivers,although only the joint PCA allows the monitoring of spatiotemporal changes in social vulnerability scores and drivers from 1991 to 2011.A general improvement in social vulnerability was observed for *** two main drivers are the economic condition(PC1),and aging and depopulation(PC2).The remaining drivers highlighted are uprooting and internal mobility,and daily *** data proved their value in the territorial,social,and demographic characterization of the country,to support medium-and long-term disaster risk reduction measures.

关键词： AMPI normalization Portugal Social vulnerability Spatiotemporal changes

3D-Parallel Simulation of Contaminant in Waste Disposals

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Computer Technology and Application 2011年第3期2卷 213-218页

作者： alexandre Francisco Bruno pereira Joss Adilson de Castro departamento de Engenharia Mecdnica Universidade Federal Fluminense Volta Redonda-RJ Brazil

In this work the authors simulate a contaminant transport problem in three dimensions that takes place in the soil of waste disposals. Such problem is modeled by a diffusion-dominated equation. The solution of this equation is addressed by using mixed finite element method for the spatial discretization of the equation. The resulting linear algebraic system is handled by an iterative domain decomposition procedure. This procedure is naturally parallelizable, and permits to implement computational codes in distributed memory machines in order to save on CPU time. Numerical results of the serial and parallel codes were compared with experimental results, and their performance measures were evaluated. The results indicate that the parallelizable procedure is an efficient tool for performing simulations of the problem.

关键词： Parallelizable procedure mixed finite elements transport problem.

Multiomic investigation of Sugarcane mosaic virus resistance in sugarcane

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The Crop Journal 2023年第6期11卷 1805-1815页

作者： Ricardo JoséGonzaga Pimenta alexandre Hild Aono Roberto Carlos Villavicencio Burbano Marcel Fernando da Silva Ivan Antônio dos Anjos Marcos Guimarães de Andrade Landell Marcos Cesar Gonçalves Luciana Rossini Pinto Anete pereira de Souza Centre for Molecular Biology and Genetic Engineering University of CampinasCampinasBrazil Gustavo Galindo Velasco Campus Littoral Polytechnic Superior SchoolGuayaquilEcuador Advanced Centre for Technological Research in Sugarcane Agribusiness Agronomic Institute of CampinasRibeirão PretoBrazil Plant Protection Research Centre Biological InstituteSão PauloBrazil department of Plant Biology Institute of BiologyUniversity of CampinasCampinasBrazil

Sugarcane mosaic virus(SCMV)is the main etiological agent of sugarcane mosaic disease,which affects sugarcane and other grass *** the extensive characterization of quantitative trait loci controlling resistance to SCMV in maize,the genetic basis of this trait in sugarcane is largely ***,a genome-wide association study was performed and machine learning coupled with feature selection was used for genomic prediction of resistance to SCMV in a diverse sugarcane *** single-nucleotide polymorphisms(SNPs)explained up to 29.9%of the observed phenotypic variance and a 73-SNP set predicted resistance with high accuracy,precision,recall,and F1 scores(the harmonic mean of precision and recall).Both marker sets were validated in additional sugarcane genotypes,in which the SNPs explained up to 23.6%of the phenotypic variation and predicted resistance with a maximum accuracy of 69.1%.Synteny analyses suggested that the gene responsible for the majority of SCMV resistance in maize is absent in sugarcane,explaining why this major resistance source has not been identified in this ***,using sugarcane RNA-Seq data,markers associated with resistance to SCMV were annotated,and a gene coexpression network was constructed to identify the predicted biological processes involved in *** network allowed the identification of candidate resistance genes and confirmed the involvement of stress responses,photosynthesis,and the regulation of transcription and translation in resistance to *** results provide a practical marker-assisted breeding approach for sugarcane and identify target genes for future studies of SCMV resistance.

关键词： Saccharum SCMV GWAS Machine learning RNA-Seq

Association of TNFA(-308G/A),IFNG(+874 A/T)and IL-10(-819 C/T)polymorphisms with protection and susceptibility to dengue in Brazilian population

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Asian Pacific Journal of Tropical Medicine 2017年第11期10卷 1065-1071页

作者： Ana Caroline Melo dos Santos Edilson Leite de Moura Jean Moises Ferreira alexandre Wendell Araujo de Moura Ailson Darlan Sales Ferreira Rubens pereira Bezerra Diego de Siqueira Figueiredo Karol Fireman de Farias Tiago Gomes de Andrade Elaine Virginia Martins de Souza Figueiredo Molecular Biology and Gene Expression Laboratory Federal University of AlagoasCampus ArapiracaAv Manoel Severino BarbosaBom SucessoArapiracaAL57309-005Brazil Faculty of Medicine Federal University of AlagoasCampus AC SimoesTabuleiro dos MartinsMaceioAlagoasBrazil

Objective: To evaluate gene polymorphisms and their association with susceptibility to ***: A retrospective case-control study was performed with 262 subjects,comprising 78 dengue fever(DF) patients, 49 dengue hemorrhagic fever(DHF) patients and 135 healthy controls. Genotypic and allelic profiles were identified using polymerase chain reaction based in real time and amplification-refractory mutation ***: We observed a protective association of IL-10(-819 C/T) C allele(P = 0.028,OR = 0.56, CI = 0.34–0.91) against DHF, while the C/T(P = 0.047, OR = 2.10,CI = 1.01–4.38) and T/T(P = 0.008, OR = 3.82, CI = 1.38–10.59) genotypes were associated with DHF and DF, respectively. The dominant model TNFA-308 GA + AA(P = 0.043, OR = 0.45, CI = 0.20–1.00) genotypes were found to have protective effect against dengue infection. A protective association among the IFNG(+874 A/T) A/T genotype against DF(P = 0.02, OR = 0.46, CI = 0.24–0.89) and DHF(P = 0.034,OR = 0.43, CI = 0.19–0.95) was observed. When the studied single-nucleotide polymorphism was analyzed in combination, the combination GTA(P = 0.022, OR = 2.95,CI = 1.18–7.41) was statistically significantly associated with susceptibility to DF and the combination GCT(P = 0.035, OR = 0.28, CI = 0.08–0.90) with protection against the development of ***: This research identifies the association of the IFNG(+874 A/T), TNFA(-308 G/A), IL-10(-819 C/T) genotypes as a factor for protection, susceptibility and severity to dengue.

关键词： Immune system IFNG TNFA IL-10 dengue Polymorphism

New beverage based on grapes and purple-fleshed sweet potatoes:Use of non-standard tubers

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Food Bioscience 2022年第3期47卷 279-288页

作者： Letícia Silva pereira Basílio Cristine Vanz Borges igor Otavio Minatel Pablo Forlan Vargas Marco Antonio Tecchio Fabio Vianello Giuseppina Pace pereira Lima department of Chemical and Biological Sciences Institute of BiosciencesSão Paulo State University18.618-000 BotucatuSão PauloBrazil Tropical Root and Starches Center São Paulo State University18610-034 BotucatuSão PauloBrazil department of Crop Production School of AgricultureSão Paulo State University18.610-034 BotucatuSão PauloBrazil department of Comparative Biomedicine and Food Science University of Padova35020LegnaroItaly

Grapes and sweet potatoes are two different plant species that have distinct bioactive composition and the use of both in a non-alcoholic mixed beverage may be an interesting source of *** and sensory characteristics,profile of phenolic compounds and biogenic amines of mixed juices of grapes (‘BRS Violeta’,‘BRS Cora’ and ‘Bordô’) and purple-fleshed sweet potato (‘JNRX12’) (0,10 and 30%) were *** beverage with sweet potato had high antioxidant activity attributed to the phytochemical compounds (***,gallic acid,catechin,tryptophan,melatonin,serotonin and dopamine).Low levels of unwanted amines (histamine,tyramine,putrescine and cadaverine) were detected,showing that their consumption is ***-fleshed sweet potato had high levels of desirable amines,mainly melatonin,making the addition of sweet potato attractive for enriching *** color,texture and sensory aspects were similar in whole grape juice and in mixed *** from ‘BRS Violeta’,with or without sweet potato showed high levels of bioactive compounds but were the least *** overall appearance and aroma of juices elaborated from ‘BRS Cora’ or ‘Bordô' grapes had similar acceptance,regardless of the addition of sweet *** from ‘BRS Cora’ and 30% purple-fleshed sweet potato are the most interesting mixture due to tryptophan and melatonin *** juices of grapes and sweet potatoes (10% and 30%) are viable options for the use of tubers outside the commercial standard,as they add interesting bioactive compounds to beverages and please the consumer.

关键词： Functional beverages Phenolic compounds Biogenic amines Quality index

Monte Carlo Simulations for a Preliminary design of TRIGA IPR-R1 PGAA Facility

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Journal of Chemistry and Chemical Engineering 2016年第6期10卷 256-270页

作者： Bruno Teixeira Guerra alexandre Soares Leal Claubia pereira Maria Angela de Barros Correia Menezes deN (departamento de Engenharia Nuclear) UFMG (Universidade Federal de Minas Gerais) Av. Antonio Carlos 6627 Campus Pampulha CEP 31270 901 Belo Horizonte Minas Gerais Brazil CDTN (Nuclear Technology development Center) CNEN (Brazilian Commission for Nuclear Energy) Av. Antonio Carlos 6627 Campus UFMG CEP 31270 901 Belo Horizonte Minas Gerais Brazil

In this paper, the evaluation of a preliminary design of a PGAA （prompt gamma activation analysis） facility based on Monte Carlo simulations is presented and discussed. The implementation of the PGAA method at the CDTN （nuclear technology development centre） would increase the applications of the TRIGA reactor. The preliminary design is based on a quasi vertical hollow cylinder （called neutron extractor） in the reactor pool to extract the neutron flux. This study evaluates the neutron flux in the upper position of the cylinder in the suggested position of the samples to be analyzed by the PGAA. The calculations of the radioactive capture reaction rates and of the detection limits for some isotopes were performed. Through all these calculations, the feasibility of the application of the PGAA method at the IPR-R1 installations was evaluated. According to the obtained results, it can be concluded that is possible to apply the PGAA method at the IPR-R1 reactor, even with its design restrictions.

关键词： PGAA facility neutron activation analysis TRIGA IPR-R1 PGAA NAA.