24 research outputs found
Initial growth of Rubi coffee plant in response to nitrogen, phosphorus and potassium and water regimes
O objetivo deste trabalho foi avaliar o crescimento da parte aérea do cafeeiro (Coffea arabica L.) cultivar Rubi MG 1192 submetido a três doses de N, P e K e dois regimes hídricos durante o primeiro ano após o transplante, em 20 de novembro de 2000. O crescimento da planta foi avaliado aos 134, 196, 236, 284, 334 e 383 dias após o transplante (DAT). Houve resposta ao N e ao K no crescimento em número de ramos plagiotrópicos por planta, ao passo que no número de nós com gemas por planta, observou-se resposta apenas ao nitrogênio. Não houve resposta ao N, P e K no aumento da massa seca da parte aérea e no índice de área foliar. Além de mostrar efeito significativo no crescimento do cafeeiro, a irrigação antecipou o rápido crescimento para julho (236 DAT) proporcionando plantas mais vigorosas. Nas plantas não-irrigadas, o rápido crescimento ocorreu em meados de outubro (334 DAT). Entretanto, a irrigação não impediu a queda na taxa de crescimento durante o inverno. O desenvolvimento das gemas em frutos ou ramos secundários nas plantas não-irrigadas alterou a distribuição de matéria seca e reduziu o crescimento do caule, ramos e folhas.The objective of this work was to evaluate shoot growth of coffee trees (Coffea arabica L.) cultivar Rubi MG 1192 under three N, P and K doses and two water regimes during the first year after transplanting, starting on the 20th November 2000. The growth was evaluated at 134, 196, 236, 284, 334 and 383 days after transplanting (DAT). Nitrogen and K affected the number of plagiotropic branches per plant. Nevertheless, only N affected the number of nodes with axillary buds. There was no growth response to N, P, and K in terms of the total shoot dry mass and leaf area index during the experimental period. Irrigated treatments presented the best plant growth results, provided more vigorous plants and anticipated the fast growth phase to July (236 DAT), but could not avoid growth rate decrease during the winter. The fast plant growth phase of non-irrigated plants occurred by the middle of October (334 DAT); in these treatments, the development of buds into fruits or secondary branches altered the dry matter distribution and reduced stem, branches and leaves growth
Sobrecarga e transtornos mentais comuns em cuidadores de crianças e adolescentes com transtornos psiquiátricos/Burden and common mental disorders in caregivers of children and teenagers with psychiatric disorders
Objetivo: Estimar o grau de sobrecarga vivenciada e a prevalência de transtornos mentais comuns (TMC) entre cuidadores de crianças e adolescentes com transtornos mentais acompanhados em um ambulatório de Psiquiatria da Infância e da Adolescência da Fundação Pública Estadual Hospital de Clínicas Gaspar Vianna (FHCGV). Método: Foi realizado um estudo observacional, transversal com 26 cuidadores de crianças e adolescentes com transtornos psiquiátricos. Foram utilizados 3 questionários: questionário sócio-demográfico, a escala Burden Interview (BI) e o Self-Reporting Questionnaire (SRQ-20). A análise estatística descritiva e inferencial foi realizada no programa GraphPad Prism 6.0. Para dados não paramétricos foi utilizado o teste Qui-Quadrado e para correlação dos dados, foi usada a Regressão Linear. Resultados: Foram predominantes na amostra indivíduos do sexo feminino, sendo, em sua maioria, genitoras dos pacientes. A prevalência de TMC foi de 73,08% dos entrevistados. O valor médio do Score da BI foi de 39,38 (±3,09) e do SRQ-20 9,73 (+ 0,96). Foi encontrada uma correlação positiva entre a Burden Interview e o SRQ-20 (p<0,05). Não houve diferença estatisticamente significativa entre os escores positivos de SRQ-20 dos cuidadores de acordo com o grupo diagnóstico específico do paciente e a presença de diagnósticos de comorbidade. Conclusão: Foi encontrado alto nível médio de sobrecarga e alta prevalência de transtornos mentais comuns entre os cuidadores de crianças e adolescentes com transtornos psiquiátricos. A elevação da sobrecarga vivenciada tende a aumentar a ocorrência de transtornos mentais comuns entre os cuidadores
Leishmaniose mucocutânea em paciente com antecedente de infecção disseminada: relato de caso
As leishmanioses constituem um conjunto de síndromes clínicas causadas pelas diversas espécies do parasita intracelular obrigatório do gênero Leishmania. Trata-se de uma zoonose transmitida por insetos-vetores do gênero Lutzomyia, a reservatórios naturais, representados por um conjunto de animais silvestres e domésticos. A doença tem registro anual de 1 a 1,5 milhão de casos e com cerca de 350 milhões de pessoas habitando áreas risco para transmissão ativa do parasita. O Brasil ganha destaque no cenário da doença na América Latina; os casos estão distribuídos em todo território nacional, sendo as regiões Norte e Nordeste do país as mais afetadas. A Leishmaniose mucocutânea ou mucosa (LM) é uma entidade rara, potencialmente grave e de grande morbidade. Usualmente costuma-se observar lesões de mucosa em pacientes que foram afetados pela forma exclusivamente cutânea da doença. A doença é caracterizada por lesões envolvendo, principalmente, superfícies mucosas do nariz e oral, com ou sem perfuração de septo nasal. Em 90% dos casos de lesão na mucosa nasal, apenas o septo nasal anterior é afetado. Além de que, apresentações clinicamente atípicas não são infrequentes tendo em vista que diversos fatores relacionados ao parasita, ao hospedeiro e à resposta imunológica são relevantes para a lesão de mucosa. O presente trabalho, objetiva relatar um caso de leishmaniose cutânea com provável evolução subclínica e reativação tardia sob a forma de LM
Effect of High vs Low Doses of Chloroquine Diphosphate as Adjunctive Therapy for Patients Hospitalized With Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection: A Randomized Clinical Trial.
There is no specific antiviral therapy recommended for coronavirus disease 2019 (COVID-19). In vitro studies indicate that the antiviral effect of chloroquine diphosphate (CQ) requires a high concentration of the drug.To evaluate the safety and efficacy of 2 CQ dosages in patients with severe COVID-19. This parallel, double-masked, randomized, phase IIb clinical trial with 81 adult patients who were hospitalized with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection was conducted from March 23 to April 5, 2020, at a tertiary care facility in Manaus, Brazilian Amazon. - Patients were allocated to receive high-dosage CQ (ie, 600 mg CQ twice daily for 10 days) or low-dosage CQ (ie, 450 mg twice daily on day 1 and once daily for 4 days). - Label: Main Outcomes and Measures
Primary outcome was reduction in lethality by at least 50% in the high-dosage group compared with the low-dosage group. Data presented here refer primarily to safety and lethality outcomes during treatment on day 13. Secondary end
points included participant clinical status, laboratory examinations, and electrocardiogram results. Outcomes will be presented to day 28. Viral respiratory secretion RNA detection was performed on days 0 and 4. Out of a predefined sample size of 440 patients, 81 were enrolled (41 [50.6%] to high-dosage group and 40 [49.4%] to low-dosage group). Enrolled patients had a mean (SD) age of 51.1 (13.9) years, and most (60 [75.3%]) were men.
Older age (mean [SD] age, 54.7 [13.7] years vs 47.4 [13.3] years) and more heart disease (5 of 28 [17.9%] vs 0) were seen in the high-dose group. Viral RNA was detected in 31 of 40 (77.5%) and 31 of 41 (75.6%) patients in the low-dosage and high-dosage groups, respectively. Lethality until day 13 was 39.0% in the high-dosage group (16 of 41) and 15.0% in the low-dosage group (6 of 40). The high-dosage group presented more instance of QTc interval greater than 500 milliseconds (7 of 37 [18.9%]) compared with the low-dosage group (4 of 36 [11.1%]).
Respiratory secretion at day 4 was negative in only 6 of 27 patients (22.2%). - Label: Conclusions and Relevance
The preliminary findings of this study suggest that the higher CQ dosage should not be recommended for critically ill patients with COVID-19 because of its potential safety hazards, especially when taken concurrently with azithromycin and oseltamivir. These findings cannot be extrapolated to patients with nonsevere COVID-19
High anti-SARS-CoV-2 antibody seroconversion rates before the second wave in Manaus, Brazil, and the protective effect of social behaviour measures: results from the prospective DETECTCoV-19 cohort
Background: The city of Manaus, Brazil, has seen two collapses of the health system due to the COVID-19 pandemic. We report anti-SARS-CoV-2 nucleocapsid IgG antibody seroconversion rates and associated risk factors in Manaus residents before the second wave of the epidemic in Brazil. Methods: A convenience sample of adult (aged ≥18 years) residents of Manaus was recruited through online and university website advertising into the DETECTCoV-19 study cohort. The current analysis of seroconversion included a subgroup of DETECTCoV-19 participants who had at least two serum sample collections separated by at least 4 weeks between Aug 19 and Oct 2, 2020 (visit 1), and Oct 19 and Nov 27, 2020 (visit 2). Those who reported (or had no data on) having a COVID-19 diagnosis before visit 1, and who were positive for anti-SARS-CoV-2 nucleocapsid IgG antibodies at visit 1 were excluded. Using an in-house ELISA, the reactivity index (RI; calculated as the optical density ratio of the sample to the negative control) for serum anti-SARS-CoV-2 nucleocapsid IgG antibodies was measured at both visits. We calculated the incidence of seroconversion (defined as RI values ≤1·5 at visit 1 and ≥1·5 at visit 2, and a ratio >2 between the visit 2 and visit 1 RI values) during the study period, as well as incidence rate ratios (IRRs) through cluster-corrected and adjusted Poisson regression models to analyse associations between seroconversion and variables related to sociodemographic characteristics, health access, comorbidities, COVID-19 exposure, protective behaviours, and symptoms. Findings: 2496 DETECTCoV-19 cohort participants returned for a follow-up visit between Oct 19 and Nov 27, 2020, of whom 204 reported having COVID-19 before the first visit and 24 had no data regarding previous disease status. 559 participants were seropositive for anti-SARS-CoV-2 nucleocapsid IgG antibodies at baseline. Of the remaining 1709 participants who were seronegative at baseline, 71 did not meet the criteria for seroconversion and were excluded from the analyses. Among the remaining 1638 participants who were seronegative at baseline, 214 showed seroconversion at visit 2. The seroconversion incidence was 13·06% (95% CI 11·52–14·79) overall and 6·78% (5·61–8·10) for symptomatic seroconversion, over a median follow-up period of 57 days (IQR 54–61). 48·1% of seroconversion events were estimated to be asymptomatic. The sample had higher proportions of affluent and higher-educated people than those reported for the Manaus city population. In the fully adjusted and corrected model, risk factors for seroconversion before visit 2 were having a COVID-19 case in the household (IRR 1·49 [95% CI 1·21–1·83]), not wearing a mask during contact with a person with COVID-19 (1·25 [1·09–1·45]), relaxation of physical distancing (1·31 [1·05–1·64]), and having flu-like symptoms (1·79 [1·23–2·59]) or a COVID-19 diagnosis (3·57 [2·27–5·63]) between the first and second visits, whereas working remotely was associated with lower incidence (0·74 [0·56–0·97]). Interpretation: An intense infection transmission period preceded the second wave of COVID-19 in Manaus. Several modifiable behaviours increased the risk of seroconversion, including non-compliance with non-pharmaceutical interventions measures such as not wearing a mask during contact, relaxation of protective measures, and non-remote working. Increased testing in high-transmission areas is needed to provide timely information about ongoing transmission and aid appropriate implementation of transmission mitigation measures. Funding: Ministry of Education, Brazil; Fundação de Amparo à Pesquisa do Estado do Amazonas; Pan American Health Organization (PAHO)/WHO.World Health OrganizationRevisión por pare
Sawdust Derivative for Environmental Application: Chemistry, Functionalization and Removal of textile dye from aqueous solution
Relações raciais, gênero e memória: trajetória de Ruth de Souza entre o Teatro Experimental do Negro e o Karamu House (1945-1952)
O objetivo desta tese é analisar relações raciais e de gênero a partir da trajetória da atriz Ruth Pinto de Souza, tendo como marco cronológico o seu ingresso no Teatro Experimental do Negro (TEN), em 1945, e a conclusão dos seus cursos de aprimoramento técnico profissional no Karamu House, teatro escola norte-americano, em 1952. Os processos de construção de memória da atriz sobre este período ao longo de sua carreira, bem como o método de arquivamento de si e do TEN protagonizado pela atriz são analisados a partir de oito depoimentos autobiográficos. Os aspectos da história da constituição e atuação do TEN, o período de estudos de Ruth de Souza nos Estados Unidos e seus primeiros anos de atuação como profissional nas principais companhias de teatro e cinema da época foram recuperados a partir de documentos do arquivo Ruth de Souza/LABHOI-UFF.277 p