Schwinger multichannel method: A study of a Feshbach resonance in e-H_2 collisions

We present results of the application of the Schwinger multichannel method to study the role of Feshbach resonances on the elastic and electronic excitation cross sections in e-H_2 collisions. Using a ^2Σ_g^+2 resonance associated with the a ^3Σ^+_g and E^1Σ^+_g states of H_2 as an example, we quantitatively illustrate the dramatic influence of open channels on the decay of such Feshbach resonances in electron-molecule collisions

Adsorptive potential of Zn–Al and Mg–Fe layered double hydroxides for the removal of 2–nitrophenol from aqueous solutions

Two layered double hydroxides (LDH) of the type Zn–Al and Mg–Fe were synthesized, characterized and used as adsorbents to uptake 2–nitrophenol (2–NP) from aqueous solutions. XRD, FTIR, SEM, EDS, AFM and N2 adsorption/desorption curves were used to characterize the Zn–Al–LDH and Mg–Fe–LDH. The potential of both layered double hydroxides to adsorb 2–NP was investigated by adsorption kinetics, equilibrium, thermodynamics and consecutive adsorption/desorption cycles. The characterization indicated a high crystallinity degree and a well–organized and lamellar structure, confirming the efficiency of the synthesis. Elovich was the better kinetic model to describe the 2–NP adsorption onto Zn–Al–LDH, while Pseudo–second order was the best for Mg–Fe–LDH. For both LDHs, the adsorption equilibrium followed the Freundlich model. The process was endothermic, being the maximum adsorption capacities of 290 and 165 mg g–1 for Zn–Al–LDH and Mg–Fe–LDH, respectively. LDHs can be applied for five adsorption/desorption cycles with excellent adsorption capacities. It can be concluded that Zn–Al–LDH and Mg–Fe–LDH are promising materials to treat waters and wastewaters containing 2–nitropheno

Characterization of Fuji Apples from Different Harvest Dates and Storage Conditions from Measurements of Volatiles by Gas Chromatography and Electronic Nose

Volatile compounds in Fuji apples harvested at two different maturities were measured at harvest and after 5 and 7 months of cold storage (1 °C) in four different atmospheres. When the samples were characterized by both chromatographic measurements of volatiles and responses of an electronic nose, the analyses showed a clear separation between fruits from different storage conditions (a normal cold atmosphere and three controlled atmospheres). During poststorage, the apples were left to ripen for 1, 5, and 10 days at 20 °C before analytical measurements were done involving headspace-gas chromatography methods and electronic nose type quartz crystal microbalances. Electronic nose responses registered by seven different sensors were used to classify the apples using principal component analysis. It was possible to identify the samples from different storage periods, days of shelf life, and harvest dates, but it was not possible to differentiate the fruits corresponding to different cold storage atmospheres

Avaliação da eficiência no sistema de saúde na microrregião de Paranaguá

Este trabalho avalia a evolução dos gastos públicos e dos indicadores de qualidade, e verifica a relação entre esses gastos e a eficiência nas políticas públicas na função saúde nos municípios da microrregião de Paranaguá-PR. Limita uma fronteira de eficiência dos gastos públicos, instrumentalizado pela Análise de Envoltória de Dados (DEA), revelando o(s) município(s) benchmarking da microrregião nas políticas públicas de saúde. As análises foram realizadas pelos métodos clássicos de Retorno Constante de Escala – CCR e Retornos Variáveis de Escala – BCC, orientados para os outputs, no período compreendido entre 2008 e 2016, a cada quatro anos. Observou-se que a qualidade da função pública de saúde é diretamente proporcional ao investimento nessas políticas públicas e, quanto à eficiência, tanto pelo método CCR como pelo BCC, há uma certa homogeneidade entre os municípios nos resultados.info:eu-repo/semantics/publishedVersio

Gasto y eficiencia de las políticas públicas en educación en la microrregión de Paranaguá

O objetivo da pesquisa é avaliar a evolução dos gastos públicos e analisar a eficiência das políticas públicas na função educação nos municípios da microrregião de Paranaguá-PR. Foi realizada uma revisão bibliográfica e instrumentalizados os dados oficiais financeiros dos municípios através do Data Envelopment Analysis – DEA (Análise Envoltória de Dados). As análises foram realizadas pelos métodos de Retorno Constante de Escala – CCR e Retornos Variáveis de Escala – BCC, ambos orientados para os outputs, no período compreendido entre 2008 e 2016, em intervalo de quatro anos. Como resultado, observou-se que a qualidade da função pública de educação é diretamente proporcional ao investimento nessas políticas públicas municipais e, quanto à eficiência, observa-se que tanto pelo método CCR como pelo BCC, há considerável homogeneidade entre os municípios.The objective of the research is to evaluate the evolution of public spending and quality indicators in relation to efficiency in public policies in education in the municipalities of the microregion of Paranaguá-PR. A literature review was carried out and the official financial data of the municipalities were instrumented through Data Envelopment Analysis - DEA (Data Envelopment Analysis). The analyses were performed by the Constant Returns to Scale - CCR and Variable Returns to Scale - BCC methods, both output-oriented, in the period between 2008 and 2016, every four years. As a result, it was observed that the quality of the public function of education is directly proportional to the investment in these municipal public policies and, as for efficiency, it is observed that both by the CCR and BCC methods, there is considerable homogeneity among the municipalities.info:eu-repo/semantics/publishedVersio

Intramuscular Hemangioma in Lip Treated with Sclerotherapy and Surgery

Intramuscular hemangioma is a relatively rare, benign tumor of vascular origin, accounting for less than 1% of all hemangiomas. This paper reports a case of a 48-year-old female patient with intramuscular hemangioma in the upper lip, treated with sclerotherapy and subsequent complementary surgery

Applications of the Schwinger multichannel method to electron-molecule collisions

We discuss some recent developments in the implementation of the Schwinger multichannel method for electron-molecule collision calculations. The evaluation of matrix elements involving the operator VG^(+)_PV, previously accomplished by insertion of a Gaussian basis on either side of G^(+)_P, is now done by direct numerical quadrature. This approach avoids the necessity of very large Gaussian basis sets, allowing the size of the basis to reflect only the dynamical requirements of the scattering wave function. We find that the reduction in the required basis size results in improved efficiency, in spite of the additional numerical effort of performing the quadrature. Trial applications to electron-CH4 scattering in the static-exchange approximation and to electronic excitation of H_2 illustrate the excellent convergence characteristics of the procedure

Rectosigmoidectomy in a patient with a prolapsed sigmoid tumor: case report

Modelo de estudo: Relato de caso. Objetivo do estudo: Relatar o caso de uma paciente com prolapso de tumor colorretal localizado no sigmóide. Metodologia: Relato de caso obtido de prontuário. Resultados: É relatado o caso de uma paciente que aguardava cirurgia para ressecção oncológica de um tumor colorretal, quando foi encaminhada ao serviço de urgências médicas com episódio de prolapso retal contendo massa tumoral pós-evacuação, sem redução espontânea. A paciente foi encaminhada à cirurgia de urgência e submetida a uma abordagem transabdominal, na qual o prolapso foi reduzido, em seguida realizada retossigmoidectomia segundo procedimento de Hartamann com colostomia terminal no cólon descendente. Conclusões: No caso relatado, por tratar-se de um paciente portador de tumor de sigmóide prolapsado, a abordagem de escolha foi a retosigmoidectomia abdominal, seguindo os preceitos oncológicos, com ligadura da artéria mesentérica inferior em sua origem. Importância do problema: O prolapso de tumor de sigmóide, uma situação clínica relativamente incomum na população adulta, e uma complicação mais rara quando se trata dos tumores colorretais, deve ser tratado imediatamente após o diagnóstico para se diminuir o risco de isquemia do segmento prolapsado e sempre que possível oferecer a cirurgia que siga os preceitos oncológicos de tratamento. Comentários: No caso relatado, foi necessário uma abordagem cirúrgica de urgência, sendo a via abdominal escolhida por respeito aos princípios da cirurgia oncológica e ao menor tempo cirúrgicoDesign of the study: Case report. Objectives: To report a case of a patient with colorectal tumor prolapse located in the sigmoid. Methodology: A retrospective case report obtained from medical records. Results: We report a case of a patient awaiting surgery for tumor resection of a colorectal tumor, when she was sent to the service of medical emergencies with an episode of post-evacuation rectal prolapse with a tumor without spontaneous reduction. The patient was referred to emergency surgery and underwent a transabdominal approach, in which the prolapse was reduced then followed by Hartmann's rectosigmodectomy surgical procedure. Conclusions: Sigmoid tumor prolapse require a surgical approach, the approach of choice was abdominal retosigmoidectomy, following the oncological principles, with ligation of the inferior mesenteric artery at its origin. Relevance: Sigmoid tumor prolapse, a relatively unusual clinical situation in adults, and more rare complication when it comes to colorectal tumors, it must be treated immediately after diagnosis to reduce the risk of ischemia prolapsed segment, and whenever possible offer surgery to follow the precepts of cancer treatment. Comments: In the case reported, an emergency surgical approach was necessary, and the abdominal route was chosen following the principles of cancer surgery and shorter surgical tim

Exploring phenotypic plasticity leaf trait relationships in fungal-resistant grapevines using linear regression: Implications of the genotype environment interaction

Accurate and non-destructive models for predicting leaf area (LA) are essential for monitoring vineyard growth and developing automated algorithms. In this study, we developed and compared the performance of eight linear regression models for predicting LA in eleven fungal-resistant grapevine genotypes. We also explored the phenotypic plasticity of leaf traits and their relationship with LA using kernel density estimation analysis. We found that genotype played a major role in defining leaf shape, and genotype-environment interaction was observed. The best models for LA estimation were identified for each genotype, and a leaf deformation index was proposed. Our results provide accurate and robust models for estimating LA in fungal-resistant grapevine genotypes and demonstrate the relationship between leaf traits and the environment. Additionally, we present a method for defining leaf asymmetry. Overall, this study contributes to the development of non-destructive and automated techniques for monitoring vineyard growth

Alpinia

Species of the genus Alpinia are widely used by the population and have many described biological activities, including activity against insects. In this paper, we describe the bioactivity of the essential oil of two species of Alpinia genus, A. zerumbet and A. vittata, against Rhodnius nasutus, a vector of Chagas disease. The essential oils of these two species were obtained by hydrodistillation and analyzed by GC-MS. The main constituent of A. zerumbet essential oil (OLALPZER) was terpinen-4-ol, which represented 19.7% of the total components identified. In the essential oil of A. vittata (OLALPVIT) the monoterpene β-pinene (35.3%) was the main constituent. The essential oils and their main constituents were topically applied on R. nasutus fifth-instar nymphs. In the first 10 min of application, OLALPVIT and OLALPZER at 125 μg/mL provoked 73.3% and 83.3% of mortality, respectively. Terpinen-4-ol at 25 μg/mL and β-pinene at 44 μg/mL provoked 100% of mortality. The monitoring of resistant insects showed that both essential oils exhibited antifeedant activity. These results suggest the potential use of A. zerumbet and A. vittata essential oils and their major constituents to control R. nasutus population