Vibrational energy transfer in N(2D)+N2 collisions: a quasiclassical trajectory study

Rate coefficients for the N(2D)+N2 collisions were calculated employing quasiclassical trajectories and the first available set of potential energy surfaces for such excited nitrogen interactions. The details of the vibrational energy transfer are discussed, such as the contributions from reactive and non-reactive trajectories as well as the contribution of each electronic symmetry. The calculated state-to-state and state-to-all rate coefficients show that deactivation is far more probable than excitation, and multi-quanta deactivation play an important role

Banco de sementes no solo de fragmentos da floresta ombrófila mista aluvial em litologias e em feições geomórficas distintas.

EVINCI. Resumo 001

Florística do banco de sementes do solo em ambiente ripário da floresta ombrófila mista.

Resumo

Mesalamine-induced myocarditis following diagnosis of Crohn's disease: a case report

Mesalamine is a common treatment for Crohn's disease, and can be rarely associated with myocarditis through a mechanism of drug hypersensitivity. We present the case of a 19-year-old male who developed chest pain two weeks after beginning mesalamine therapy. The electrocardiogram showed slight ST-segment elevation with upward concavity in the inferolateral leads; blood tests demonstrated elevated troponin I and the echocardiogram revealed moderately depressed left ventricular systolic function with global hypocontractility. Cardiac magnetic resonance imaging confirmed the diagnosis of myocarditis, revealing multiple areas of subepicardial fibrosis. The onset of symptoms after mesalamine, and improvement of chest pain, cardiac biomarkers and left ventricular systolic function after discontinuing the drug, suggest that our patient suffered from a rare drug-hypersensitivity reaction to mesalamine

Observational study in Takotsubo cardiomyopathy

INTRODUCTION: Takotsubo cardiomyopathy (TC) is a still rarely diagnosed clinical syndrome, which is characterized by transient cardiac dysfunction with reversible wall motion abnormalities. AIM: Determine the demographic characteristics, clinical presentation and prognosis of patients with TC. METHODS: Retrospective study of 39 patients admitted for TC in a cardiology center during a period of 3 years. RESULTS: In the population studied, the mean age was 67.15±12.01 years and women were predominant.The most frequent comorbidities were hypertension (76.9%), dyslipidemia (51.3%), psychiatric illness (23.1%) and diabetes mellitus (12.8%). The emotional stress was the most common triggering event (n=10), however, in 17 patients we were not able to identify any precipitating factor. Cardinal symptoms which led to admission, were acute chest pain (n=28) and dyspnoea (n=15). The most common ECG findings were ST segment elevation (n=21), inversion of the T wave (n=21) and QTc prolongation (n=22). All patients had typical wall motion abnormalities in the echocardiography and/or ventriculography. The mean ejection fraction was 35.59±5.54%. The most common in-hospital complication was acute heart failure (n=16, 41%), whereas 3 patients developed cardiogenic shock. The presence of moderate to severe LVS dysfunction (p=0.048) and higher levels of C reactive protein (p=0.02) and pBNP (p=0.042) were associated with the development of acute heart failure. Rhythm disturbances occurred in 3 patients and there was only one non-cardiovascular death. At follow-up at 6 months all patients showed recovery of LVS function; there was one recurrence and 3 deaths from non-cardiovascular causes. CONCLUSION: According to the literature, our review shows higher prevalence of TC in women and a clinical and electrocardiographic presentation similar to the picture of an acute coronary syndrome. In the acute phase, the TC is not necessarily a benign entity, because we observed a high prevalence of acute heart failure

Supressão de plantas daninhas por leguminosas consorciadas com cupuaçuzeiro na Amazônia Central.

O objetivo deste trabalho foi avaliar o efeito de leguminosas de cobertura consorciadas com cupuaçuzeiro na supressão de plantas daninhas. O experimento foi conduzido no campo experimental da Embrapa Amazônia Ocidental

Cardiogenic shock complicating acute coronary syndromes

INTRODUCTION: Despite advances in the treatment of patients with acute coronary syndromes (ACS), cardiogenic shock (CS) remains the leading cause of death in these patients. PURPOSE: Determine characteristics and management of patients with an ACS complicated by CS. Determine predictors of development of CS during hospitalization and predictors of in-hospital mortality. METHODS: Retrospective study of 2064 patients consecutively admitted for ACS in a Coronary Unit over a period of 4 years. RESULTS: During the years under study, 111 patients (5.4%) developed CS. Patients with CS were more likely to be older (69.8 ± 13.2 vs 63.5 ± 13.1 years, p<0.001); there were no significant differences in other clinical characteristics. Myocardial Infarction with ST segment elevation (STEMI) was more frequent in patients with CS (p<0.001). Patients with CS underwent less often coronary angiography (p<0.001), revascularization (p = 0.004) and were less treated with β-blocker (p <0.001) and ACE inhibitors therapy (p <0.001). In multivariate analysis, predictors of occurrence of CS during hospitalization were: tachycardia (OR 3.2, 95% CI 1.6-6.3), systolic blood pressure 1 (OR 3.5, 95% CI 1.8-6.8) at admission. The in-hospital mortality of patients with CS was 45%, compared with 1.7% in those who did not develop CS. Factors associated with an increased mortality in patients with CS included absence of coronary revascularization (OR 4.9, 95% CI 1.5-16.0), GFR <60ml/min (OR 4.4, 95% CI 1.3-15.6), advanced age (OR 6.4, 95% CI 1.6-26.2) and LVEF ≤ 35 % (OR 3.9, 95% CI 1.3-12.4). CONCLUSION: According to the literature, our review showed that CS in the context of ACS is associated with a high mortality. We identified clinical markers that are associated with the development of CS and may spot patients at risk earlier. Absence of coronary revascularization remains an independent predictor of mortality in CS

Estratégias de manejo de solos em sistema agroflorestal em lote da reforma agrária.

Resumo: Sistemas Agroflorestais - sistemas embasados pelos princípios da agroecologia, o manejo dos solos deve levar em consideração a ciclagem de nutrientes, o teor de matéria orgânica e o equilíbrio entre os componentes vivos e não vivos do solo. Este artigo busca resgatar as estratégias utilizadas por um agricultor que trabalha com sistemas agroflorestais há 4 anos, evidenciando o manejo da biomassa, as espécies escolhidas, os motivos, a época de plantio e capina e os resultados observados por ele. A propriedade esta situada no Assentamento Sepé Tiaraju, localizado na região de Ribeirão Preto, SP, que constitui-se o primeiro assentamento ecológico do Estado de São Paulo. O manejo da biomassa é a principal estratégia de uso, manejo e conservação de solo para o sistema agroflorestal em estudo, o qual é caracterizado como sucessional e bastante biodiverso. As principais plantas utilizadas são: urucum (Bixa orellana), bananeira (Musa sp), mamona (Ricinus communis) e as leguminosas como o feijão de porco (Canavalia ensiformis), crotalarias (Crotalaria sp), feijão guandu (Cajanus cajan) e fedegoso (Cassia spectabilis). Vê-se que o agricultor tende a retirar do sistema as gramíneas, substituindo-as por plantas de mais fácil manejo como as leguminosas, caracterizando mudanças nas condições físicas, químicas e biológicas do solo que são descritas na bibliografia cientifica. Abstract: Agroforestry - systems based in the principles of agroecology, soil management should take into consideration the cycling of nutrients, organic matter content and balance between living and nonliving components of soil. This article seeks to rescue the strategies used by one farmer that work with agroforestry systems for 4 years, emphasizing the management of biomass, the species chosen, the reasons, the time of planting and weeding, and the results observed by owner This farm is located the Sepé Tiarauú settlement, in Ribeirão Preto, SP, which constitutes in the first ecological settlement in state of São Paulo. The management of biomass corresponds to the main strategy use, management and soil conservation in agroforestry system in study, which is characterized as successional and highly biodiverse. The main plants components used are: ?urucum? (Bixa orellana), banana (Musa sp), castobean (Ricinus communis) and legumes like ?feijão de porco? (Canavalia ensiformis), Crotalaria (Crotalaria sp), pigeon pea (Cajanus cajan) and ?fedegoso? (Cassia spectabilis). It is seen that the farmer tends to put the grass out of the system, replacing them with plants easier to work as Leguminosae family, featuring changes in physical, chemical and biological conditions of soil