The objective of this work was based on catalysts Pt, Ni and Ru supported on zeolite NH4ZSM-5 and characterize them. In this work monometallic bifunctional catalysts were prepared (Pt/NH4ZSM-5; Ni/NH4ZSM-5; Ru/NH4ZSM-5), all containing the same concentration of each metal supported by competitive ion exchange, using solutions of platinum complexes [Pt (NH3)4] Cl2, Nickel [Ni (NH3)6] Cl2and chloride Ruthenium III (RuCl3). The samples were characterized by chemical analysis by X-ray Spectroscopy Energy dispersive (EDS), X-Ray Diffraction (XRD), nitrogen adsorption (BET method). Through the analysis of X-ray diffraction, its possible to identify the preservation of the structure of zeolite ZSM-5 after the competitive ion Exchange with metals (Ni, Pt, Ru) and calcination. The dispersion of platinum and ruthenium in zeolite ZSM-5, didnt modify the textural characteristics of the zeolite, but the dispersion of nickel caused a change in values of surface area of catalysts.

The objective of this work was to prepare ceramic membranes and to evaluate the effect of the raw material on the ceramic membrane and on the efficiency of the emulsion separation oil/water. The ceramic membranes were manufactured using the uniaxial dry compaction method, from the thermal decomposition of aluminum sulfate or aluminum acetate, to evaluate the effect of the raw material (aluminum acetate or aluminum sulfate) on the efficiency in the emulsion oil/water separation. Ceramic membranes were characterized by measurements of X-ray diffraction patterns, scanning electron microscopy, mechanical strength, bubble point and water flow. In this study, membranes were produced with different characteristics. The values found for the permeate for the A1 membrane were 9.20 mg / L due to characteristics such as porosity and mechanical strength (44.63 % and 1.3 MPa), while the values A2 membrane was 6.52 mg / L, 18.86 % and 6.7 MPa. In conclusion, the membranes prepared are effective in removing the oil from the oily waste water. According to the results, the treatment of oil-water emulsions by microfiltration facilitates a significant reduction in the concentration of permeate oil.

Recentemente, muita atenção foi dada à forma como a zeólita está sendo sintetizada a partir de material de baixo custo, particularmente, resolvendo os principais problemas ambientais. A zeólita NaA pode ser obtido a partir da metacaulinização do caulim natural. O presente estudo enfoca as propriedades de adsorção na superfície da zeólita NaA para a remoção do violeta cristal. O produto obtido a partir dos experimentos foram caracterizados por difração de raios X, análise química por fluorescência de raios X e análise térmica. O processo de adsorção foi estudado por variação de tempo e da concentração da solução, indicando que os dados de adsorção seguem a cinética de pseudo-segunda ordem, indicando assim a adsorção por quimissorção na superfície adsorvente, o modelo de isoterma de Sips com uma capacidade de adsorção máxima de 4,65 mg.g-1 no pH da solução. Esses resultados demonstraram que o adsorvente utilizado se trata de materiais altamente eficiente.

Introduction The infection caused by the Zika virus during pregnancy causes microcephaly and brain damage in fetus, and the systemic involvement with diffuse muscle impairment, high frequency of arthrogryposis and microphthalmia, characterizes congenital Zika syndrome (CZS). The cardiac impairment in CZS was rarely evaluated. Purpose To evaluate the morphology and biventricular cardiac function in children affected by CZS, using electrocardiogram (EKG), echocardiogram and biomarkers dosage. Methods This is a cross-sectional study conducted with 52 children with CZS (GZ) compared with 25 healthy children (CG). Clinical evaluation, EKG, and echocardiogram were performed in all of them. Also, troponin I and natriuretic peptide type B (BNP) dosages were performed in GZ. Results The median age of the studied population was 5 years in groups, GZ (3 to 6 years), CG (3 to 8 years), 40.4% (GZ) and 60% (CG) of female gender. The most prevalent electrocardiographic alteration was sinus arrhythmia, GZ: 9 (17.3%) and CG: 4 (16%). The echocardiographic evaluation showed the morphological parameters adjusted for the Z score: left ventricular (LV) end-diastolic diameter in GZ: −2.36 [−5.10, 2.63] vs CG: −1.07 [−3.43, 0.61], p<0.001; LV end-systolic diameter in GZ: −1.02 [−4.49, 0.62] vs CG: −0.06 [−1.98, 2.28], p<0.01; ascending aorta in GZ: −0.09 [−2.08, 1.60] vs CG: 0.43 [−1.47, 2.2], p: 0.021; basal diameter of the right ventricle (RV) in GZ: −2.34 [−4.90, 0.97] vs CG: −0.96 [−2.21, 0.40], p<0.01; pulmonary artery dimension in GZ: −2.13 [−5.99, 0.98] vs CG: −0.24 [−2.53, 0.59], p<0.01. The left atrium volume index (ml/m2) was in GZ: 13.15 [6.80, 18.00] vs CG: 18.80 [5.90, 25.30], p<0.01; right atrium volume index (ml/m2) in GZ: 10.10 [4.90, 15.30] vs CG: 15.80 [4.10, 24.80], p<0.01. The septum systolic excursion of the mitral annular plane (MAPSE, cm) was in GZ: 0.98 [0.78, 1.66] vs CG: 1.25 [1.07, 1.56], p<0.01; and lateral annulus: 1.25 [0.81, 1.86] vs CG: 1.46 [1.07, 1.83], p<0.001; tricuspid annular plane systolic excursion (cm) in GZ: 1.52 [1.13, 2.34] vs CG: 1.90 [1.62, 2.35], p<0.01; S' of the RV (cm/s) was in GZ: 10.60 [6.49, 21.00] vs CG: 12.80 [9.19, 16.20], p<0.01. The peak of late mitral inflow (A wave, cm/s) was in GZ: 64 [24, 134] vs CG: 52 [26, 94], p=0.02; peak of late diastolic mitral annular wave (e') of septum (cm/s) was GZ: 15 [7, 23] vs CG: 17 [12, 27], p<0.01; peak of e' lateral (cm/s) was in GZ: 11 [7, 19], CG: 12 [9, 15], p<0,016; E/e' ratio was GZ: 7.52 [4.57, 10.78] vs CG: 6.41 [4.75, 12.64], p<0.01. The LV longitudinal and circumferential and RV longitudinal strain measurements showed no difference between the groups. Conclusion A reduction in cardiac dimensions and biventricular dysfunction was found in CZS, showing an early cardiac impairment, which will enable to establishment early therapies, avoiding severe heart failure. Funding Acknowledgement Type of funding sources: None.

O interesse em processos de separação por membranas ganham cada vez mais destaque em aplicações industriais. As membranas zeolíticas apresentam características únicas que as tornam atraentes para aplicação em processos de separação, a estabilidade mecânica, térmica e química superior a alguns materiais, tornam as membranas zeolíticas foco de intensa pesquisa. Este trabalho teve como objetivo preparar as membranas inorgânicas do tipo gama-alumina e zeolítica (MOR/gama-alumina). A membrana inorgânica do tipo gama-alumina foi sintetizada a partir da decomposição do sulfato de alumínio, moagem, compactação e conformação e a membrana zeolítica foi preparada pelo método de transporte em fase vapor, que consiste na deposição da mistura reacional da zeólita Mordenita sobre a membrana inorgânica (gama-alumina), seguido do crescimento de cristais sob condições hidrotérmicas. Foram realizadas análises por Difração de raios X (DRX), Microscopia Eletrônica de Varredura (MEV) e Termogravimetria (TG)/análise térmica diferencial (DTA) para o precursor da membrana inorgânica gama-alumina. A obtenção das membranas inorgânicas gama-alumina e zeolítica (MOR/gama-alumina) puderam ser confirmadas pelos difratogramas e por imagens obtidas por Microscopia Eletrônica de Varredura. A partir das imagens obtidas por MEV a membrana zeolítica mostra-se de forma compacta sem apresentar fissuras na superfície.