182 research outputs found

    Land reform in developing countries

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    Atualização do Itinerário da viagem do Príncipe de Wied ao Brasil (1815-1817)

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    Procuramos, neste trabalho, atualizar a nomenclatura geográfica do itinerário da viagem do Príncipe de Wied ao Brasil, de 1815 a 1817. Impuzemo-nos esta tarefa pela dificuldade em identificar muitas localidades-tipo de anfíbios descritos por Wied. Com efeito, vários zoologos posteriores foram levados a incorreções na designação de localidades-tipo, não só pela falta de mapas adequados dessa região do Brasil como, também, pela falta de consulta minuciosa da obra original. Tendo Wied viajado em duas regiões ecológicas distintas no estado da Bahia (matas úmidas do litoral e região seca do interior), a generalização da designação da localidade-tipo como "Bahia", "Província da Bahia" ou "Estado da Bahia" trouxe grande confusão em relação aos atuais problemas de zoogeografia e subespeciação. Era nossa ideia inicial empreender, a par do estudo do roteiro, a revisão de todas as localidades-tipo dos vertebrados colecionados e descritos por Wied; no entanto, fomos forçados a abandonar esta tarefa por envolver questões de prioridade em taxinomia de grupos estranhos à nossa especialidade. Limitamo-nos por isso à identificação das localidades visitadas e a alguns comentários sobre as diversas obras referentes à viagem

    Determinants of Patient Use and Satisfaction With Synchronous Telemental Health Services During the COVID-19 Pandemic:Systematic Review

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    Background: Several recent studies examined patient use and satisfaction with synchronous telemental health services in response to the widespread implementation during the COVID-19 pandemic. However, a systematic review of recent literature on the determinants of these outcomes is missing. Objective: The aim of this systematic review was to give an extensive overview of the literature on and highlight the influential determinants of patient use and satisfaction with synchronous telemental health services during the COVID-19 pandemic.Methods: This review satisfied the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines and was registered in PROSPERO. Peer-reviewed, quantitative studies that observed the determinants of patient use or satisfaction with synchronous telemental health services during the COVID-19 pandemic were included. PubMed, PsycInfo, and Web of Science database searches were conducted in August 2022 for English and German language studies published from 2020 onward. Key steps were performed by 2 reviewers. Determinants were synthesized into major categories informed by the dimensions of the widely used and established Unified Theory of Acceptance and Use of Technology. Result: Of the 20 included studies, 10 studies examined determinants of patient use, 7 examined determinants of patient satisfaction, and 3 observed both outcomes. The quality of the studies was mainly good or fair. There was substantial heterogeneity in the study designs, methods, and findings. Sociodemographic characteristics and health-related determinants were mostly considered. Some of the major dimensions of the Unified Theory of Acceptance and Use of Technology were neglected in recent studies. Although most findings were mixed or nonsignificant, some indications for potential relationships were found (eg, for sex, age, and symptom severity). Conclusion: The findings revealed potential target groups (eg, female and young patients with mild symptoms) for future postpandemic telemental health interventions. However, they also identified patient groups that were harder to reach (eg, older patients with severe symptoms); efforts may be beneficial to address such groups. Future quantitative and qualitative research is needed to secure and expand on recent findings, which could help improve services. PROSPERO CRD42022351576; https://tinyurl.com/yr6zrva5</p

    Microhylidae da coleção do Departamento de Zoologia (Amphibia-Anura)

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    Redescrição e novo nome generico para Coelonotus Fissilis Mir.-Rib., 1920

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    The First Bromeligenous Species of Dendropsophus (Anura: Hylidae) from Brazil\u27s Atlantic Forest

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    We describe a new treefrog species of Dendropsophus collected on rocky outcrops in the Brazilian Atlantic Forest. Ecologically, the new species can be distinguished from all known congeners by having a larval phase associated with rainwater accumulated in bromeliad phytotelms instead of temporary or lentic water bodies. Phylogenetic analysis based on molecular data confirms that the new species is a member of Dendropsophus; our analysis does not assign it to any recognized species group in the genus. Morphologically, based on comparison with the 96 known congeners, the new species is diagnosed by its small size, framed dorsal color pattern, and short webbing between toes IV-V. The advertisement call is composed of a moderate-pitched two-note call (~5 kHz). The territorial call contains more notes and pulses than the advertisement call. Field observations suggest that this new bromeligenous species uses a variety of bromeliad species to breed in, and may be both territorial and exhibit male parental care

    Повышение эффективности противопожарной защиты магазина «Fix Price»

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    Целью работы является усовершенствование системы противопожарной защиты магазина "Fix Price". В выпускной квалификационной работе проведен обзор литературных источников по вопросам состояния проблем обеспечения пожарной безопасности на предприятиях торговли, дан анализ автоматических систем пожаротушения, обоснован выбор автоматической установки пожаротушения тонкораспылённой водой для объекта исследования, произведены расчёты индивидуального пожарного риска.The aim of the work is to improve the fire protection system of the "Fix Price" store. In the final qualifying work, a review of literature sources on the state of problems of fire safety in commercial enterprises is conducted, an analysis of automatic fire extinguishing systems is given, the choice of an automatic fire extinguishing system with thin-sprayed water for the object of research is justified, and calculations of individual fire risk are made

    Serum after Autologous Transplantation Stimulates Proliferation and Expansion of Human Hematopoietic Progenitor Cells

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    Regeneration after hematopoietic stem cell transplantation (HSCT) depends on enormous activation of the stem cell pool. So far, it is hardly understood how these cells are recruited into proliferation and self-renewal. In this study, we have addressed the question if systemically released factors are involved in activation of hematopoietic stem and progenitor cells (HPC) after autologous HSCT. Serum was taken from patients before chemotherapy, during neutropenia and after hematopoietic recovery. Subsequently, it was used as supplement for in vitro culture of CD34+ cord blood HPC. Serum taken under hematopoietic stress (4 to 11 days after HSCT) significantly enhanced proliferation, maintained primitive immunophenotype (CD34+, CD133+, CD45−) for more cell divisions and increased colony forming units (CFU) as well as the number of cobblestone area-forming cells (CAFC). The stimulatory effect decays to normal levels after hematopoietic recovery (more than 2 weeks after HSCT). Chemokine profiling revealed a decline of several growth-factors during neutropenia, including platelet-derived growth factors PDGF-AA, PDGF-AB and PDGF-BB, whereas expression of monocyte chemotactic protein-1 (MCP-1) increased. These results demonstrate that systemically released factors play an important role for stimulation of hematopoietic regeneration after autologous HSCT. This feedback mechanism opens new perspectives for in vivo stimulation of the stem cell pool
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