Satisfação no trabalho da equipe de enfermagem: revisão integrativa

Job satisfaction consists of a feeling of wellbeing, resulting from the interaction of several occupational aspects, and may influence the worker's relationship with the organization, clients and family. Hence, it becomes important for the quality of nursing care to reflect on this topic in depth. Therefore, this study aimed to examine the scientific evidence related to job satisfaction in Brazilian nursing. An integrative literature review was carried out in the databases LILACS, MEDLINE, BDENF and Cochrane Library, totaling 17 publications, categorized in: Job Satisfaction, Job Dissatisfaction and Associated Factors. It was concluded that job satisfaction is determined by a complex network of factors and may vary depending on the group studied. Additional research, particularly of evidence level III in different nursing fields, covering all of Brazil, is necessary to support the implementation of occupational improvements.La satisfacción en el trabajo consiste en un sentimiento de bienestar resultante de la interacción de varios aspectos ocupacionales, pudiendo influenciar la relación del trabajador con la organización, clientes y familia. Es importante para la calidad de la asistencia de enfermería realizar una reflexión profunda sobre este tema, por eso se objetivó en este estudio analizar las evidencias científicas referentes a la satisfacción en el trabajo del equipo de enfermería brasileño. Se trató de una revisión integradora de la literatura en las bases de datos LILACS, MEDLINE, BDENF y Biblioteca Cochrane, totalizando 17 publicaciones categorizadas en: Satisfacción en el Trabajo, Insatisfacción en el Trabajo y Factores Asociados. Se concluyó que la satisfacción en el trabajo es determinada por una red compleja de factores, pudiendo variar conforme el grupo estudiado. Investigaciones adicionales, especialmente con niveles de evidencias III, en diferentes campos de actuación de la enfermería, abarcando todo el Brasil, son necesarias para subsidiar la implantación de mejorías ocupacionales.A satisfação no trabalho consiste em sentimento de bem-estar. resultante da interação de vários aspectos ocupacionais, podendo influenciar a relação do trabalhador com a organização, clientes e família. Torna-se importante, para a qualidade da assistência de enfermagem, reflexão aprofundada sobre esse tema, e, por isso, objetivou-se neste estudo analisar as evidências científicas referentes à satisfação no trabalho da equipe de enfermagem brasileira. Trata-se de revisão integrativa da literatura nas bases de dados LILACS, MEDLINE, BDENF e Biblioteca Cochrane, totalizando 17 publicações categorizadas em: satisfação no trabalho, insatisfação no trabalho e fatores associados. Conclui-se que a satisfação no trabalho é determinada por rede complexa de fatores, podendo variar conforme o grupo estudado. Pesquisas adicionais, especialmente com níveis de evidências III, em diferentes campos de atuação da enfermagem, abrangendo todo Brasil, são necessárias para subsidiar a implantação de melhorias ocupacionais

Silylation of [Nb]-MCM-41 as an efficient tool to improve epoxidation activity and selectivity

Well-ordered [Nb]-MCM-41 was synthesized at room temperature with essentially all niobium present in the sample substituted into the silica framework. The material was calcined and then silylated using hexamethyldisilazane (HMDS). Both calcined and silylated materials were characterized by X-ray diffraction (XRD), diffuse reflectance UV-vis, inductively coupled plasma emission (ICP-OES), infrared spectroscopy (FTIR), N-2 adsorption at low temperatures, thermogravimetry (TG), and nuclear magnetic resonance of Si-29 with magic-angle spinning (NMR-MAS). The materials were used as catalysts in the epoxidation of cis-cyclooctene with tert-butyl hydroperoxide (TBHP) and 70 wt% aqueous hydrogen peroxide as oxidants, to verify the influence of the silylation on the activity and selectivity. It was observed that the silylated material was more active for both oxidants, reaching 62% conversion and 94% selectivity after 48 h with TBHP and 13% conversion and 80% selectivity after 5 h with aqueous hydrogen peroxide. (c) 2006 Elsevier Inc. All rights reserved.2431576

One-pot synthesis of mesoporous [Al]-SBA-16 and acidity characterization by CO adsorption

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)We report here on the first one-pot synthesis of mesoporous silica SBA-16 containing aluminum. This material was successfully synthesised using poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) Pluronic F-127 (PEO106PPO70PEO106) as structure directing agent, butanol as co-surfactant and specifically adjusting the pH during the synthesis (i.e. adopting the so called 'pH-adjusting method'). The structural and porosity properties of the novel [Al]-SBA-16 were studied by X-ray diffraction, Al-27-MAS-NMR and N-2 adsorption at 77 K. The acidity was monitored by infrared spectroscopy of CO adsorption at 100 K. (C) 2011 Elsevier Inc. All rights reserved.14541699124130Piedmont Region (Microcell Project)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Ministero dell'Istruzione, dell'Universita e della RicercaFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Surface acidity of novel mesostructured silicas with framework aluminum obtained by SBA-16 related synthesis

A novel SBA-16-related synthesis of mesostructured silica containing framework aluminum is reported here. This material was successfully synthesized using aluminum sulphate and the pH-adjusting method. The structural and porosity properties of this novel material were studied by X-ray diffraction and N-2 adsorption at 77 K. The Al insertion was determined by Al-27-MAS-NMR and the acidity was monitored by infrared spectroscopy of CO adsorption at 100 K. (C) 2007 Elsevier Inc. All rights reserved.1114169963263

Novel mesoporous carbon ceramics composites as electrodes for direct methanol fuel cell

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)In this work, a new family of materials for electrodes of direct methanol fuel cell (DMFC) is presented. Mesoporous carbon ceramics (MCCs) are obtained by the addition of commercial graphite into the synthesis gel of SBA-15 mesoporous silica with SiO(2)/C weight ratios of 1/1 and 1/3. X-ray diffraction confirms both the formation of organized silica and the presence of graphite, and nitrogen physisorption measurements show that the presence of a graphitic phase does not interfere in the silica pore diameter although it diminishes the surface area. The MCCs modified with Pt or PtRu are tested as DMFC electrodes and compared with the commercial support Vulcan XC-72R. When used as cathode, the system using MCC-SBA-15 with SiO(2)/C weight ratios of 1/1 presents a negligible performance, while the MCC-SBA-15 with SiO(2)/C weight ratios of 1/3 is 2.9 times less active than the commercial support. On the other side, when used as anode, the MCC-SBA-15 with SiO(2)/C weight ratios of 1/3 displays performances comparable to Vulcan XC-72R. (C) 2011 Elsevier B.V. All rights reserved.1962081888196Piedmont Region (Microcell Project)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Ministero dell'Istruzione, dell'Universita e della RicercaFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Physicochemical Characterization and Surface Acid Properties of Mesoporous [Al]-SBA-15 Obtained by Direct Synthesis

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)In this work, [Al]-SBA-15 samples were prepared by three different direct synthesis methods and one postsynthesis procedure, aiming to study the influence of the preparation procedures on their structural, textural, and physicochemical features. In this aim, samples were investigated by combining different experimental techniques (X R D, physisorption, (27)Al-MAS NMR. and IR spectroscopy). All preparation methods led to the formation of aluminum-containing SBA-15 samples. Nevertheless, depending on the preparation procedure. samples exhibited different structural, textural, and surface characteristics, especially in terms of Bronsted and Lewis acid sites content. [Al]-SBA-15(1) was synthesized by the pH-adjusting method and presented the lowest surface area and pore volumes. Its surface displayed three families of-medium and one family of high strength Bronsted acid sites. The Bronsted/Lewis ratio was 3.49. [Al]-SBA-15(2) and [Al]-SBA-15(3) were synthesized by prehydrolysis of the silica and the aluminum precursors. In [Al]-SBA-15(2), ammonium fluoride was used as silica condensation catalyst. These two materials presented similar surface area, pore diameters and volumes, and Bronsted acidity. The Bronsted:Lewis acid sites ratio were 3.07 and 2.15 for[Al]-SBA-15(2) and [Al]-SBA-15(3), respectively. The [Al]-SBA-15(P) obtained by postsynthesis illumination displayed surface area similar to that of [Al]-SBA-15(3), Bronsted Lewis acid sites ratio of 2.75, and Bronsted acidity similar to that of [Al]-SBA- 15(1). The presence or extra-framework aluminum oxide was identified only on [Al]-SBA-15(3) and [Al]-SHA-15(P).26857915800Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Piedmont RegionMinistero dell 'Istruzione, dell'Universita e della RicercaFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Density Functional Theory and Reaction Kinetics Studies of the Water-Gas Shift Reaction on Pt-Re Catalysts

Periodic, self-consistent density functional theory calculations (DFT-GGA-PW91) on Pt(111) and Pt3Re(111) surfaces, reaction kinetics measurements, and microkinetic modeling are employed to study the mechanism of the water-gas shift (WGS) reaction over Pt and Pt-Re catalysts. The values of the reaction rates and reaction orders predicted by the model are in agreement with the ones experimentally determined; the calculated apparent activation energies are matched to within 6% of the experimental values. The primary reaction pathway is predicted to take place through adsorbed carboxyl (COOH) species, whereas formate (HCOO) is predicted to be a spectator species. We conclude that the clean Pt(111) is a good representation of the active site for the WGS reaction on Pt catalysts, whereas the active sites on the Pt-Re alloy catalyst likely contain partially oxidized metal ensembles

Heterogenized nickel catalysts for propene dimerization: Support effects on activity and selectivity

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Ni-SiO2 and Ni-[Si]-MCM-41 are synthesized by grafting Ni(MeCN)(6)(BF4)(2) onto SiO2 (nonporous) and MCM-41 (mesoporous). The catalytic properties of the grafted catalysts after activation with Al2Et3Cl3 are compared with the homogeneous equivalent system in propylene oligomerization. The identification of dimers leads to the determination of preferential reaction steps and the corresponding active species. Differences of the insertion modes of propylene are correlated to the textural properties of the support. Supporting the nickel active species reduces the isomerization side reactions and changes the mode of insertion of the first olefin. (C) 2012 Elsevier B.V. All rights reserved.323235Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)PRONEX/FAPERGSCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Bio-ethylene from sugarcane as a competitiveness strategy for the Brazilian chemical industry

The urgency with which the world economy needs to be decarbonized could lead to the emergence of regions with the capacity to produce renewable feedstock such as biomass. The competitiveness of these regions could result from their ability to produce high value-added chemicals at the lowest cost. The biomass embodied in a chemical product could reduce carbon emissions, leading to net CO2 removal. The aim of this study was to test the hypothesis that bio-ethylene could make the Brazilian chemical industry more competitive. This would be achieved by applying the revenues from carbon credits associated with using ethanol and sugarcane bagasse as feedstocks for bio-ethylene production. Three production routes were compared according to their estimated cost of production in Brazil under a simplified life-cycle analysis: sugar-cane-derived ethanol to ethylene (with and without CO2 capture and storage – BECCS); bio-methanol to olefin; and conventional steam cracking of naphtha. When associated with the production of long-lasting materials, the ethanol-to-ethylene with BECCS route achieved the lower CO2 break-even price (US$75/t CO2), followed by ethanol to ethylene without BECCS (US$82/t CO2) and bio-methanol to ethylene (US$106/t CO2). Our findings highlight the advantage for the Brazilian chemical industry of implementing a national or, even better, a global carbon-pricing instrument