Análise dos flavonóides de Acacia longifolia (Andr.) Willd. Leguminosae-Mimosoideae

Orientador: Vitor Alberto KerberCo-orientador: Obdulio Gomes MiguelDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências da SaúdeResumo: Acacia /ongifolia (Andr.) Willd., é um arbusto, de 3-4 m de altura. Arbusto originário da região leste-tropical da Austrália, muito cultivado para fixar dunas em terrenos íngremes, sujeitos a erosão. Acacia longifolia (Andr.) Willd. foi investigada visando à identificação dos flavonóides majoritários em suas flores e a avaliação de atividades antimicrobianas. Através de métodos cromatográficos, três flavonóides foram isolados a partir da fração acetato de etila. Estes foram identificados através de análises espectroscópicas e propriedades físico-químicas como uma flavanona a naringenina, e dois de seus heterosídeos, a 5-f3-0-galactosil-naringenina e 5-f3-Dglucosil- naringenina. Usando CLAE, os flavonóides isolados foram quantificados no material vegetal, apresentando teores mínimos de 0,582 % (m/m) de 5-f3-Dgalactosil- naringenina, 0,2% (mim) de 5-f3-0-glucosil-naringenina e 0,018 % (mim) de naringenina. A fração acetato de etila a uma concentração de 500 ppm, mostrou uma significativa atividade antifúngica, inibindo 30% do crescimento micelial de Rhizoctonia sp. Também houve inibição do crescimento micelial de Colletotrichum acutatum (15,9%) e de Fusarium oxysporum (10,5 %). O extrato bruto etanólico e as frações acetato de etila e diclorometano foram testadas contra as cepas de Staphy/ococcus aureus, S. epidermidis e Escherichia colí em concentrações até 1000 ?g, mas nenhuma atividade foi detectada.Abstract: Acacia longifolia (Andr.) Willd., is a shrub, (3-4 m in height). Originally from Australia east-tropical region, it is cultivated to firm dunes in steep ground. Acacia longifolia (Andr.) Willd. was investigated to evaluating anti-microbial activities and to identify flavonoids in its flowers. Three flavonoids were isolated by chromatographics means from the ethyl acetate fraction. The flavonoids were identified by spectral analysis and physical-chemical properties given Naringenin, a flavanone and two of its glycosides, 5-13-D-galactosil-naringenin and 5-f3-D-glucosil-naringenin. Using an HPLC system, the isolated flavonoids were quantified in the plant material, giving minimal values of 0,582 % (w/w) for 5-f3-D-galactosil-naringenin, 0,2 % (w/w) for 5- 13-D-glucosil-naringenin and 0,018 % (w/w) for naringenin. At the concentration of 500 ppm the ethyl acetate fraction showed a remarkable anti-fungi activity inhibiting 30% of the micelial growing from Rhizoctonia sp .. lt also inhibit the micelial growing of Colletotrichum acutatum (15,9%) and Fusarium oxysporum (10,5%). The crude ethanolic extract, the dicloromethane and the ethyl acetate fractions were tested againt strains of Staphylococcus aureus, S. epidermidis and Escherichia coli at concentrations up to 1000 ?g giving no activity

Triterpenos e flavonóides isolados de flores de laseguea erecta (apocynaceae)

Das flores de Laseguea erecta isolaram-se o lupeol, ácido ursólico e os flavonóides quercetina (3,5,7,3’,4’-pentaidroxiflavona) e 3-O-a-L-arabinopiranosil quercetina. Esta é o primeiro estudo sobre metabólitos especiais em flores desse género. As estruturas foram determinadas através da análise dos dados espectrais de IV, RMN de 1H e 13C (1D e 2D) e comparação com valores registrados na literatura.Das flores de Laseguea erecta isolaram-se o lupeol, ácido ursólico e os flavonóides quercetina (3,5,7,3’,4’-pentaidroxiflavona) e 3-O-a-L-arabinopiranosil quercetina. Esta é o primeiro estudo sobre metabólitos especiais em flores desse género. As estruturas foram determinadas através da análise dos dados espectrais de IV, RMN de 1H e 13C (1D e 2D) e comparação com valores registrados na literatura.From the flowers of Laseguea erecta were isolated the lupeol, ursolic acid, quercetin (3,5,7,3’,4’-pentahydroxyflavone) and 3-O-a-L-arabinopyranosylquercetin. This is the first phytochemical study of this genera flowers’. The structures were established by the IR, 1H and 13C NMR (1D, 2D) spectral data analysis and by comparison with literature data

Brazilian recommendations on the safety and effectiveness of the yellow fever vaccination in patients with chronic immune-mediated inflammatory diseases

Background: In Brazil, we are facing an alarming epidemic scenario of Yellow fever (YF), which is reaching the most populous areas of the country in unvaccinated people. Vaccination is the only effective tool to prevent YF. In special situations, such as patients with chronic immune-mediated inflammatory diseases (CIMID), undergoing immunosuppressive therapy, as a higher risk of severe adverse events may occur, assessment of the risk-benefit ratio of the yellow fever vaccine (YFV) should be performed on an individual level. Main body of the abstract: Faced with the scarcity of specific orientation on YFV for this special group of patients, the Brazilian Rheumatology Society (BRS) endorsed a project aiming the development of individualized YFV recommendations for patients with CIMID, guided by questions addressed by both medical professionals and patients, followed an internationally validated methodology (GIN-McMaster Guideline Development). Firstly, a systematic review was carried out and an expert panel formed to take part of the decision process, comprising BRS clinical practitioners, as well as individuals from the Brazilian Dermatology Society (BDS), Brazilian Inflammatory Bowel Diseases Study Group (GEDIIB), and specialists on infectious diseases and vaccination (from Tropical Medicine, Infectious Diseases and Immunizations National Societies); in addition, two representatives of patient groups were included as members of the panel. When the quality of the evidence was low or there was a lack of evidence to determine the recommendations, the decisions were based on the expert opinion panel and a Delphi approach was performed. A recommendation was accepted upon achieving ≥80% agreement among the panel, including the patient representatives. As a result, eight recommendations were developed regarding the safety of YFV in patients with CIMID, considering the immunosuppression degree conferred by the treatment used. It was not possible to establish recommendations on the effectiveness of YFV in these patients as there is no consistent evidence to support these recommendations. Conclusion: This paper approaches a real need, assessed by clinicians and patient care groups, to address specific questions on the management of YFV in patients with CIMID living or traveling to YF endemic areas, involving specialists from many areas together with patients, and might have global applicability, contributing to and supporting vaccination practices. We recommended a shared decision-making approach on taking or not the YFV

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Differential cross section measurements for the production of a W boson in association with jets in proton–proton collisions at √s = 7 TeV

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 −1]. 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

This paper describe development and financial performance of cooperative in District Pelalawan among 2007 - 2008. Studies on primary and secondary cooperative in 12 sub-districts. Method in this stady use performance measuring of productivity, efficiency, growth, liquidity, and solvability of cooperative. Productivity of cooperative in Pelalawan was highly but efficiency still low. Profit and income were highly, even liquidity of cooperative very high, and solvability was good

Juxtaposing BTE and ATE – on the role of the European insurance industry in funding civil litigation

One of the ways in which legal services are financed, and indeed shaped, is through private insurance arrangement. Two contrasting types of legal expenses insurance contracts (LEI) seem to dominate in Europe: before the event (BTE) and after the event (ATE) legal expenses insurance. Notwithstanding institutional differences between different legal systems, BTE and ATE insurance arrangements may be instrumental if government policy is geared towards strengthening a market-oriented system of financing access to justice for individuals and business. At the same time, emphasizing the role of a private industry as a keeper of the gates to justice raises issues of accountability and transparency, not readily reconcilable with demands of competition. Moreover, multiple actors (clients, lawyers, courts, insurers) are involved, causing behavioural dynamics which are not easily predicted or influenced. Against this background, this paper looks into BTE and ATE arrangements by analysing the particularities of BTE and ATE arrangements currently available in some European jurisdictions and by painting a picture of their respective markets and legal contexts. This allows for some reflection on the performance of BTE and ATE providers as both financiers and keepers. Two issues emerge from the analysis that are worthy of some further reflection. Firstly, there is the problematic long-term sustainability of some ATE products. Secondly, the challenges faced by policymakers that would like to nudge consumers into voluntarily taking out BTE LEI

Search for stop and higgsino production using diphoton Higgs boson decays

Results are presented of a search for a "natural" supersymmetry scenario with gauge mediated symmetry breaking. It is assumed that only the supersymmetric partners of the top-quark (stop) and the Higgs boson (higgsino) are accessible. Events are examined in which there are two photons forming a Higgs boson candidate, and at least two b-quark jets. In 19.7 inverse femtobarns of proton-proton collision data at sqrt(s) = 8 TeV, recorded in the CMS experiment, no evidence of a signal is found and lower limits at the 95% confidence level are set, excluding the stop mass below 360 to 410 GeV, depending on the higgsino mass