539 research outputs found

    Soil Management and Water-Use Efficiency in Brazilian Coffee Crops

    Get PDF
    Brazil is a world leader in coffee production. However, currently, it coexists with recurrent and severe droughts, accompanied by intense heat, strong insolation and low relative humidity. As the cultivation is carried out primarily in the rainy season, these world climate variations have affected crops yields and fruits quality, requiring innovative actions that promote efficient use of water stored in the soil. Among several soil management practices that promote a more rational use of water, deep tillage combined with liming, gypsum and fertilizer amendments lead to an increase in effective depth of coffee roots, therefore reducing water stress. Moreover, intercropping with Urochloa sp. is highly efficient in enhancing soil structure, water infiltration and plant available water capacity. Additionally, other innovative techniques and practices are also introduced in this chapter

    Dor cr√īnica e qualidade de vida: revis√£o da literatura

    Get PDF
    A dor cr√īnica √© um problema de sa√ļde p√ļblica, pois aproximadamente 30% da popula√ß√£o mundial sofre dessa doen√ßa. Pacientes com dor cr√īnica usam os servi√ßos de sa√ļde cinco vezes mais do que o restante dos indiv√≠duos. A dor cr√īnica prevalece entre as mulheres com idades entre 45 e 65 anos. Compromete a qualidade de vida dos pacientes, acompanhada de complica√ß√Ķes como imobilidade musculares e articulares, dist√ļrbios de sono, diminui√ß√£o do apetite, depress√£o do sistema imune e maior susceptibilidade a doen√ßas, depend√™ncia de medica√ß√£o, da fam√≠lia e cuidadores, isolamento da sociedade e da fam√≠lia, ansiedade e medo, frustra√ß√£o, depress√£o e suic√≠dio. Trata-se de uma revis√£o integrativa da literatura com objetivo de analisar o que se tem constru√≠do em pesquisas anteriores sobre dor cr√īnica e qualidade de vida. Foram analisados 30 artigos ap√≥s a aplica√ß√£o dos crit√©rios. A complexidade da dor cr√īnica foi observada em todos os artigos, como as implica√ß√Ķes da fibromialgia. A dor cr√īnica √© multifatorial, fundamental a realiza√ß√£o de mais pesquisas sobre as condi√ß√Ķes de tratamentos farmacol√≥gicos associados as alternativas com novos estudos sobre o tema, e que considerem uma melhor QV para esses paciente

    Desempenho agron√īmico de 13 gen√≥tipos de girassol no sudoeste baiano

    Get PDF
    O cultivo de girassol (Helianthus annuus L.) se destaca por ser uma planta de ciclo curto, ter alto teor de √≥leo nos gr√£os, aonde o mesmo √© utilizado para produ√ß√£o de biodiesel e alimenta√ß√£o humano, podendo tamb√©m ser empregada para alimenta√ß√£o animal, assim como a silagem da planta e a torta proveniente da extra√ß√£o do √≥leo. Diante desses fatores, buscou-se avaliar o desempenho da cultura em diferentes condi√ß√Ķes no Sudoeste Baiano. O experimento foi realizado em condi√ß√Ķes de campo na √°rea do Instituto Federal de Educa√ß√£o, Ci√™ncia e Tecnologia Baiano Campus Guanambi, avaliando-se o desempenho produtivo de 13 gen√≥tipos no semi√°rido baiano. O delineamento experimental foi em blocos casualizados com quatro repeti√ß√Ķes. O ciclo da cultura foi de 120 dias. Houve diferen√ßa estat√≠stica (p<0,05) para os caracteres produ√ß√£o de gr√£os, peso de 1000 aqu√™nios, produ√ß√£o de mat√©ria seca na flora√ß√£o, √°rea foliar, altura de inser√ß√£o do cap√≠tulo, di√Ęmetro do cap√≠tulo e o rendimento de √≥leo, n√£o havendo diferen√ßa apenas para os teores de N, P e K no florescimento. Os gen√≥tipos CF 101, BRS G43, H√ČLIO 250 e SYN 045 foram os que apresentaram simultaneamente maior rendimento de gr√£os e de √≥leo. O gen√≥tipo CF 101 se destacou por possuir baixa estatura

    Factors Associated with Emotion Regulation in Men with Internet Access Living in Brazil during the COVID-19 Pandemic

    Get PDF
    Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.Objective: to evaluate the factors associated with emotion regulation in men with internet access living in Brazil during the COVID-19 pandemic. Method: an epidemiological survey, conducted with 1015 men. An electronic form was applied containing sociodemographic and occu-pational characteristics, support and coping strategies, as well as emotional and behavioral aspects. Emotion regulation was assessed using the Emotion Regulation Questionnaire. Results: The prevalence values observed were 44.6% for Low Cognitive Reappraisal and of 47.1% for High Emotional Sup-pression. The following factors were identified as associated: (a) with Low Cognitive Reappraisal: being aged 30 years old or more, practicing physical activity, worrying about social distancing and having positive emotions and feelings; and (b) with High Emotional Suppression: being heterosexual, non-white race/skin color, having security support or public administration, not sanitizing food, worrying about lack of physical activity and not having negative emotions. Conclusion: the adoption of emotion regulation strategies was associated with individual, contextual and emotional/behavioral characteristics. Masculinity ideals seem to exert an influence on these relationships.publishersversionpublishe

    Pervasive gaps in Amazonian ecological research

    Get PDF
    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5‚Äď7 vast areas of the tropics remain understudied.8‚Äď11 In the American tropics, Amazonia stands out as the world‚Äôs most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13‚Äď15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon‚Äôs biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region‚Äôs vulnerability to environmental change. 15%‚Äď18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

    Pervasive gaps in Amazonian ecological research

    Get PDF

    Mapping density, diversity and species-richness of the Amazon tree flora

    Get PDF
    Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution

    ATLANTIC-PRIMATES: a dataset of communities and occurrences of primates in the Atlantic Forests of South America

    Get PDF
    Primates play an important role in ecosystem functioning and offer critical insights into human evolution, biology, behavior, and emerging infectious diseases. There are 26 primate species in the Atlantic Forests of South America, 19 of them endemic. We compiled a dataset of 5,472 georeferenced locations of 26 native and 1 introduced primate species, as hybrids in the genera Callithrix and Alouatta. The dataset includes 700 primate communities, 8,121 single species occurrences and 714 estimates of primate population sizes, covering most natural forest types of the tropical and subtropical Atlantic Forest of Brazil, Paraguay and Argentina and some other biomes. On average, primate communities of the Atlantic Forest harbor 2 ¬Ī 1 species (range = 1‚Äď6). However, about 40% of primate communities contain only one species. Alouatta guariba (N = 2,188 records) and Sapajus nigritus (N = 1,127) were the species with the most records. Callicebus barbarabrownae (N = 35), Leontopithecus caissara (N = 38), and Sapajus libidinosus (N = 41) were the species with the least records. Recorded primate densities varied from 0.004 individuals/km 2 (Alouatta guariba at Fragmento do Bugre, Paran√°, Brazil) to 400 individuals/km 2 (Alouatta caraya in Santiago, Rio Grande do Sul, Brazil). Our dataset reflects disparity between the numerous primate census conducted in the Atlantic Forest, in contrast to the scarcity of estimates of population sizes and densities. With these data, researchers can develop different macroecological and regional level studies, focusing on communities, populations, species co-occurrence and distribution patterns. Moreover, the data can also be used to assess the consequences of fragmentation, defaunation, and disease outbreaks on different ecological processes, such as trophic cascades, species invasion or extinction, and community dynamics. There are no copyright restrictions. Please cite this Data Paper when the data are used in publications. We also request that researchers and teachers inform us of how they are using the data. ¬© 2018 by the The Authors. Ecology ¬© 2018 The Ecological Society of Americ

    Differential cross section measurements for the production of a W boson in association with jets in proton‚Äďproton collisions at ‚ąös = 7 TeV

    Get PDF
    Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (pT) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (HT), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions at a centre-of-mass energy of 7 TeV was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb[superscript ‚ąí1]. The measured cross sections are compared to predictions from Monte Carlo generators, MadGraph + pythia and sherpa, and to next-to-leading-order calculations from BlackHat + sherpa. The differential cross sections are found to be in agreement with the predictions, apart from the pT distributions of the leading jets at high pT values, the distributions of the HT at high-HT and low jet multiplicity, and the distribution of the difference in azimuthal angle between the leading jet and the muon at low values.United States. Dept. of EnergyNational Science Foundation (U.S.)Alfred P. Sloan Foundatio

    Penilaian Kinerja Keuangan Koperasi di Kabupaten Pelalawan