Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 121
Filtrar
1.
Artigo em Inglês | MEDLINE | ID: mdl-31768960

RESUMO

Membrane separation processes are being currently applied to produce drinking water from water contaminated with nitrate. The overall process generates a brine with high nitrate/nitrite concentration that is usually send back to a conventional wastewater treatment plant. Catalytic processes to nitrate reduction are being studied, but the main goal of achieving a high selectivity to nitrogen production is still a matter of research. In this work, a two-step process was evaluated, aiming to verify the best combination of operational parameters to efficiently reduce nitrate to nitrogen. In the first step, the nitrate was reduced to nitrite by electroreduction, applying a copper electrode and different cell potentials. A second step of the process was carried out by reducing the generated nitrite with a catalytic process by hydrogenation. The results showed that the highest nitrate reduction (89%) occurred when a cell potential of 11 V was applied. In this condition, the nitrite ion was generated with all experimental conditions evaluated. Then, to reduce the nitrite ion formed by catalytic reduction, activated carbon fibers (ACF) and powder γ-alumina (γ-Al2O3) were tested as supports for palladium (Pd). With both catalysts, the total nitrite conversion was obtained, being the selectivity to gaseous compounds 94% and 97% for Pd/Al2O3 and Pd/ACF, respectively. Considering the results obtained, a two-stage treatment setup to brine denitrification may be proposed. With electrochemistry, an operating condition was achieved in which ammonium production can be controlled to very low values, but the reduction is predominant to nitrite. With the second step, all nitrite is converted to nitrogen gas and just 3% of ammonium is produced with the most selective catalyst. The main novelty of this work is associated to the use of a two-stage process enabling 89% of nitrate reduction and 100% of nitrite reduction.

2.
Chemosphere ; 236: 124318, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31319310

RESUMO

The present paper deals with the atenolol (ATL) degradation by advanced anodic oxidation using a boron-doped diamond anode supported on niobium (Nb/BDD). Cyclic voltammetry performed on this electrode revealed that it presents a high quality (diamond-sp3/sp2-carbon ratio), high potential for OER and that ATL can be oxidized directly and/or indirectly by the electrogenerated oxidants, such as hydroxyl radicals, persulfate ions and sulfate radicals. Electrolysis experiments demonstrated that ATL degradation and mineralization follow a mixed (first and zero) order kinetics depending on the applied current density. At high applied current densities, the amount of OH radicals is very high and the overall reaction is limited by the transport of ATL (pseudo first-order kinetics) whereas for low applied current densities, the rate of OH radicals generation at the anode is slower than the rate of arrival of ATL molecules (pseudo-zero order kinetics). Estimated values of kzero and kfirst based on the assumption of pseudo-zero or pseudo-first order kinetics were carried oud as a function of the supporting electrolyte concentration, indicating that both parameters increased with its concentration due the higher production of sulfate reactive species that play an important role in degradation. Finally, MCE increased with the decrease of current density, due to the lower amount of OH present in solution, since this species could be rapidly wasted in parasitic reactions; and the increase of sulfate concentration due to the more efficient production of persulfate.


Assuntos
Atenolol/uso terapêutico , Eletrólise/métodos , Nióbio/química , Atenolol/farmacologia , Eletrodos
3.
J Food Sci Technol ; 56(3): 1559-1566, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30956336

RESUMO

Phenolic compounds of the first and second racking wine lees, including anthocyanins, were qualitatively and quantitatively analyzed by HPLC-DAD-MS. Wine lees from both rackings displayed similar chromatographic profiles. Therefore, it was impossible to differentiate the qualitative results regarding phenolic compounds. On the other hand, those from the second racking presented, on average, concentration of polyphenols twice as high. While the ones from the first racking displayed ca. 1600 mg phenolic compounds and 400 mg anthocyanins per kg of dry matter, those from the second racking have shown ca. 3300 mg phenolic compounds and 700 mg anthocyanins per kg of dry matter. These outcomes indicate that, although the wine lees from the first racking can be employed as a resource for phenolic compounds recovery, those from the second racking are more appropriate for this purpose.

4.
Rev Bras Enferm ; 72(suppl 1): 315-320, 2019 Feb.
Artigo em Inglês, Português | MEDLINE | ID: mdl-30942378

RESUMO

OBJECTIVE: Analyze the literature for knowledge about charismatic leadership among nursing professionals. METHOD: This is an integrative review of the literature that searched for studies published in English, Portuguese and Spanish until 2016 in the following electronic databases: LILACS, Pubmed, SCOPUS, Web of Science, and CINAHL. RESULTS: Three studies were selected from a total of twenty-one studies; they were arranged in two categories: validation of a charismatic leadership instrument and effects of charismatic leadership on followers' initiative-oriented behavior. CONCLUSION: Charismatic leadership is considered an important skill for nursing professionals as they generate a positive influence on followers, especially in times of crisis and changes. Considering the relevance of this style of leadership, the need to develop further studies on this subject is reinforced, given the low number of studies found in the literature.


Assuntos
Liderança , Enfermeiras e Enfermeiros/psicologia , Habilidades Sociais , Humanos , Enfermeiras e Enfermeiros/normas , Competência Profissional/normas
5.
Environ Pollut ; 249: 354-361, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30909128

RESUMO

The environmental detriment due to the presence of emerging contaminants has encouraged the development of advanced oxidation processes. Such methods deal with non-selective chemical reactions. Therefore, toxic byproducts can be generated and distinct post treatment toxicity levels can be expected. The present study investigates the phytotoxicity of 2,4,6-tribromophenol (TBP) to L. sativa seeds and A. cepa bulbs, as well as the TBP phytotoxicity and genotoxicity to A. cepa root. L. sativa seeds and A. cepa bulbs were germinated by being exposed to solutions containing TBP before and after treatment by UV-based processes: direct photolysis (DP), heterogeneous photocatalysis (HP) and photoelectrolysis (PEC). Subsequent analysis of the root length, to determine phytotoxicity, as well as evaluation of chromosomal abnormalities, revealed that the samples treated by DP presented higher phytotoxicity than the untreated ones. On the other hand, samples treated by HP and PEC did not present phytotoxicity. In fact, for the A. cepa assays, phytotoxicity was not observed, including the initial sample. However, genotoxicity assays showed a high frequency of chromosomal aberrations in the initial sample, before the UV-based process treatment. After 140 min of treatment by HP, there was a reduction in genotoxicity, while PEC treatment resulted in a sample with no genotoxicity. In contrast, DP presented high levels of phytotoxicity and genotoxicity. Additionally, DP shows similar degradation and debromination values, when compared to the HP and PEC processes, but less mineralization. Therefore, considering that the DP process did not deals with the HO• radical, the oxidation pathway can generate byproducts with higher toxicity, which lead to higher levels of phytotoxicity and genotoxicity. These results show that different UV-based oxidation processes are associated to distinct byproducts and toxicity levels. In addition, a toxicity assessment with different organisms should be performed to ensure a safe outcome.


Assuntos
Fenóis/toxicidade , Poluentes Químicos da Água/toxicidade , Dano ao DNA , Oxirredução , Fenóis/química , Fotólise , Testes de Toxicidade , Poluentes Químicos da Água/química
6.
Artigo em Inglês | MEDLINE | ID: mdl-30845691

RESUMO

This work evaluated the performance of an electrochemical oxidation process (EOP), using boron-doped diamond on niobium substrate (Nb/BDD), for the treatment of a reverse osmosis concentrate (ROC) produced from a petrochemical wastewater. The effects of applied current density (5, 10, or 20 mA·cm-2) and oxidation time (0 to 5 h) were evaluated following changes in chemical oxygen demand (COD) and total organic carbon (TOC). Current efficiency and specific energy consumption were also evaluated. Besides, the organic byproducts generated by EOP were analyzed by gas chromatography coupled to mass spectrometry (GC⁻MS). The results show that current densities and oxidation time lead to a COD and TOC reduction. For the 20 mA·cm-2, changes in the kinetic regime were found at 3 h and associated to the oxidation of inorganic ions by chlorinated species. After 3 h, the oxidants act in the organic oxidation, leading to a TOC removal of 71%. Although, due to the evolution of parallel reactions (O2, H2O2, and O3), the specific energy consumption also increased, the resulting consumption value of 66.5 kW·h·kg-1 of COD is considered a low energy requirement representing lower treatment costs. These results encourage the applicability of EOP equipped with Nb/BDD as a treatment process for the ROC.


Assuntos
Técnicas Eletroquímicas/métodos , Nióbio/química , Petróleo/análise , Análise da Demanda Biológica de Oxigênio , Indústria Química , Cromatografia Gasosa-Espectrometria de Massas , Osmose , Águas Residuárias , Purificação da Água
7.
Rev. bras. enferm ; 72(supl.1): 315-320, Jan.-Feb. 2019. tab
Artigo em Inglês | LILACS-Express | ID: biblio-990682

RESUMO

ABSTRACT Objective: Analyze the literature for knowledge about charismatic leadership among nursing professionals. Method: This is an integrative review of the literature that searched for studies published in English, Portuguese and Spanish until 2016 in the following electronic databases: LILACS, Pubmed, SCOPUS, Web of Science, and CINAHL. Results: Three studies were selected from a total of twenty-one studies; they were arranged in two categories: validation of a charismatic leadership instrument and effects of charismatic leadership on followers' initiative-oriented behavior. Conclusion: Charismatic leadership is considered an important skill for nursing professionals as they generate a positive influence on followers, especially in times of crisis and changes. Considering the relevance of this style of leadership, the need to develop further studies on this subject is reinforced, given the low number of studies found in the literature.


RESUMEN Objetivo: Analizar el conocimiento producido sobre liderazgo carismático entre profesionales de enfermería. Método: Revisión integrativa de la literatura, habiéndose realizado búsquedas en las bases de datos electrónicas: LILACS, Pubmed, SCOPUS, Web of Science y CINAHL, consistente en artículos publicados en inglés, portugués y español, hasta el año 2016. Resultados: De un total de veintiún artículos encontrados, fueron seleccionados tres, y divididos en dos categorías: estudio de validación de instrumento de liderazgo carismático y efectos del liderazgo carismático en la conducta de la iniciativa-orientada de los seguidores. Conclusión: Cabe resaltar que el liderazgo carismático es considerado una competencia importante en profesionales de enfermería, y que genera influencia positiva a los seguidores, particularmente en momentos de crisis y de cambios. Ante la relevancia de este tipo de liderazgo, toma fuerza la necesidad de desarrollar más estudios sobre la temática, considerando la escasa cantidad de artículos encontrados.


RESUMO Objetivo: Analisar o conhecimento produzido acerca da liderança carismática entre os profissionais de enfermagem. Método: Trata-se de uma revisão integrativa da literatura por meio de buscas nas seguintes bases de dados eletrônicas: LILACS, Pubmed, SCOPUS, Web of Science e CINAHL, sendo artigos publicados em inglês, português e espanhol, até o ano de 2016. Resultados: De um total de vinte e um artigos encontrados, foram selecionados três e divididos em duas categoriais: estudo de validação de instrumento de liderança carismática e efeitos da liderança carismática no comportamento da iniciativa orientada dos seguidores. Conclusão: Ressalta-se que a liderança carismática é apontada como competência importante para profissionais da enfermagem e gera influências positivas nos seguidores, sobretudo em momentos de crise e de mudanças. Diante da relevância desse estilo de liderança, reforça-se a necessidade do desenvolvimento de mais estudos sobre a temática, tendo em vista a pequena quantidade de artigos encontrados.

8.
Environ Technol ; 40(26): 3456-3466, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29770731

RESUMO

Antibiotics are not efficiently removed in conventional wastewater treatments. In fact, different advanced oxidation process (AOPs), including ozone, peroxide, UV radiation, among others, are being investigated in the elimination of microcontaminants. Most of AOPs proved to be efficient on the degradation of antibiotics, but the mineralization is on the one hand not evaluated or on the other hand not high. At this work, the UV-based hybrid process, namely Photo-assisted electrochemical oxidation (PEO), was applied, aiming the mineralization of microcontaminants such as the antibiotics Amoxicillin (AMX), Norfloxacin (NOR) and Azithromycin (AZI). The influence of the individual contributions of electrochemical oxidation (EO) and the UV-base processes on the hybrid process (PEO) was analysed. Results showed that AMX and NOR presented higher mineralization rate under direct photolysis than AZI due to the high absorption of UV radiation. For the EO processes, a low mineralization was found for all antibiotics, what was associated to a mass-transport limitation related to the low concentration of contaminants (200 µg/L). Besides that, an increase in mineralization was found, when heterogeneous photocatalysis and EO are compared, due to the influence of UV radiation, which overcomes the mass-transport limitations. Although the UV-based processes control the reaction pathway that leads to mineralization, the best results to mineralize the antibiotics were achieved by PEO hybrid process. This can be explained by the synergistic effect of the processes that constitute them. A higher mineralization was achieved, which is an important and useful finding to avoid the discharge of microcontaminants in the environment.


Assuntos
Raios Ultravioleta , Poluentes Químicos da Água , Antibacterianos , Peróxido de Hidrogênio , Oxirredução , Fotólise
9.
Cogitare enferm ; 24: e59789, 2019. tab
Artigo em Português | LILACS, BDENF - Enfermagem | ID: biblio-1019768

RESUMO

RESUMO Objetivo: identificar e comparar a autopercepção dos enfermeiros e a percepção de auxiliares/técnicos de enfermagem quanto às práticas de Liderança Coaching. Método: estudo transversal, realizado em 2016, com 69 enfermeiros e 233 auxiliares/técnicos de enfermagem de dois hospitais públicos paulistas. Utilizaram-se dois questionários validados acerca do exercício da liderança Coaching pelo enfermeiro, relacionados à autopercepção do enfermeiro e à percepção do técnico e auxiliar de enfermagem. Resultados: dentre as quatro dimensões da Liderança Coaching, "comunicação" foi a mais reconhecida. No Hospital A, constatou-se semelhança na percepção da prática de liderança exercida pelos enfermeiros entre as duas categorias. No Hospital B, a autopercepção dos enfermeiros acerca do exercício da Liderança Coaching foi maior, quando comparada à percepção dos auxiliares/técnicos, exceto para a dimensão "comunicação". Conclusão: a Liderança Coaching e suas dimensões podem beneficiar as instituições e a enfermagem na melhor gestão de suas equipes.


RESUMEN: Objetivo: Identificar y comparar la autopercepción de enfermeros y la percepción de auxiliares/técnicos de enfermería respecto de las prácticas de liderazgo coaching. Método: Estudio transversal, realizado en 2016 con 69 enfermeros y 233 auxiliares/técnicos de enfermería de dos hospitales públicos paulistas. Se utilizaron dos cuestionarios validados para el ejercicio de dicho liderazgo por parte del enfermero, relacionados con autopercepción del enfermero y autopercepción de técnicos/auxiliares de enfermería. Resultados: De las cuatro dimensiones del liderazgo coaching, la más reconocida fue "comunicación". En el Hospital A, se constató semejanza en la percepción de la práctica de liderazgo ejercido por enfermeros entre ambas categorías. En el B, la autopercepción de enfermeros respecto del ejercicio de liderazgo coaching fue mayor comparada con la percepción de auxiliares/técnicos, excepto para la dimensión "comunicación". Conclusión: El liderazgo coaching y sus dimensiones puede beneficiar a instituciones y a la enfermería permitiendo una mejor gestión de sus equipos.


ABSTRACT Objective: To identify and compare the self-perception of nurses and the perception of nursing aides and nursing technicians towards coaching leadership practices. Method: This was a cross-sectional study carried out in 2016 with 69 nurses and 233 nursing aides and technicians from two public hospitals in the Brazilian state of São Paulo. The researchers administered two validated questionnaires about the exercise of this type of leadership by nurses, addressing the self-perception of nurses and the perception of nursing aides and nursing technicians. Results: Of the four dimensions of coaching leadership, communication was the most recognized. In hospital A, the perceptions of professionals from both categories regarding the practice of leadership exercised by nurses were similar. In hospital B, the self-perception of nurses regarding the exercise of coaching leadership was higher than the perception of nursing aides and nursing technicians, except for the communication dimension. Conclusion: coaching leadership and its dimensions can benefit institutions and nursing professionals by helping improve team management.


Assuntos
Humanos , Liderança , Equipe de Enfermagem , Enfermagem , Tutoria , Unidades Hospitalares
10.
Rev. latinoam. enferm. (Online) ; 27: e3109, 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-985660

RESUMO

ABSTRACT Objective: to analyze the influence of Accreditation on the professional satisfaction of nursing workers. Method: multicentric, cross-sectional research, outlined by the sequential explanatory mixed method. In the first preponderant, quantitative step, the validated Brazilian version of the Index of Work Satisfaction was applied to a sample (n = 226) representative of nursing professionals from three hospitals. One hospital was private and certified by Accreditation; another hospital was private and non-certified; and another was public and non-certified. By connection, the second step (qualitative) complemented the quantitative analysis. In this step, interviews (n = 39) were carried out and summarized through the method of Discourse of the Collective Subject. Descriptive and inferential statistical analyses were applied to the quantitative data connected to the qualitative support, as well as a joint presentation of part of the information in a joint display. Results: workers of the certified hospital had a better overall job satisfaction score. There were more statistical associations among workers in private hospitals. The comparison of the three groups investigated in the two steps of the mixed study confirmed Accreditation as a positive factor for professional satisfaction. The public hospital excelled in relation to the certified hospital in terms of salary, job requirements and interaction. Conclusion: Accreditation positively influenced the professional satisfaction of the nursing teams investigated.


RESUMO Objetivo: analisar a influência da Acreditação na satisfação profissional de trabalhadores de enfermagem. Método: pesquisa multicêntrica, transversal, delineada pelo método misto explanatório sequencial. Na primeira etapa preponderante, quantitativa, aplicou-se a versão brasileira validada do Index of Work Satisfaction a uma amostra (n=226) representativa de profissionais de enfermagem de três hospitais. Destes, um era privado e certificado pela Acreditação, e os demais, não certificados, sendo um público e outro privado. Por conexão, a segunda etapa (qualitativa) complementou a fase quantitativa por meio de entrevistas (n=39) que foram sumarizadas pelo Discurso do Sujeito Coletivo. Fez-se análise estatística descritiva e inferencial dos dados quantitativos conectados aos qualitativos de suporte, além de apresentação conjunta de parte das informações em joint display. Resultados: os trabalhadores do hospital certificado apresentaram melhor escore geral de satisfação profissional. Houve mais associações estatísticas entre os trabalhadores dos hospitais privados. A comparação dos três grupos investigados, nas duas fases do estudo misto, ratificou a Acreditação como fator positivo para a satisfação profissional. O hospital público sobressaiu-se em relação ao hospital certificado nas dimensões remuneração, requisitos do trabalho e interação. Conclusão: a Acreditação influenciou positivamente a satisfação profissional das equipes de enfermagem investigadas.


RESUMEN Objetivo: analizar la influencia de la Acreditación en la satisfacción profesional de trabajadores de enfermería. Método: investigación multicéntrica, transversal, delineada por el método mixto explicativo secuencial. En la primera etapa preponderante, cuantitativa, se aplicó la versión brasileña validada del Index of Work Satisfaction a una muestra (n=226) representativa de profesionales de enfermería de tres hospitales. De ellos, uno era privado y certificado por la Acreditación, y los demás eran no certificados, siendo un público y otro privado. Por conexión, la segunda etapa (cualitativa) complementó la fase cuantitativa por medio de entrevistas (n=39) que fueron resumidas por el Discurso del Sujeto Colectivo. Se hizo análisis estadístico descriptivo e inferencial de los datos cuantitativos conectados a los cualitativos de soporte, además de presentación conjunta de parte de las informaciones en joint display. Resultados: los trabajadores del hospital certificado presentaron mejor puntaje general de satisfacción profesional. Hubo más asociaciones estadísticas entre los trabajadores de los hospitales privados. La comparación de los tres grupos investigados, en las dos fases del estudio mixto, ratificó la Acreditación como factor positivo para la satisfacción profesional. El hospital público sobresalió en relación al hospital certificado en las dimensiones remuneración, requisitos del trabajo e interacción. Conclusión: la Acreditación influenció positivamente la satisfacción profesional de los equipos de enfermería investigados.


Assuntos
Pesquisa em Administração de Enfermagem/organização & administração , Acreditação Hospitalar , Satisfação no Emprego , Equipe de Enfermagem/organização & administração , Gestão da Qualidade
11.
Artigo em Português | LILACS, BDENF - Enfermagem | ID: biblio-1015687

RESUMO

Objetivo: Analisar as competências profissionais requeridas para a atuação do enfermeiro hospitalar e aquelas implementadas durante a sua formação acadêmica. Método: Estudo documental, qualitativo, tendo como cenário uma instituição hospitalar pública e uma instituição de ensino superior, sendo fontes de evidências documentos legais das referidas instituições, os dados coletados de outubro de 2016 a janeiro de 2017. Foi utilizada a análise temática indutiva dos dados. Resultados: Permitiram identificar competências clínicas, como postura profissional e habilidades técnicas e gerenciais, como liderança e comunicação, em ambos os documentos, sendo algumas implementadas na formação acadêmica, porém não exigidas pela organização hospitalar, outras requeridas apenas pelo hospital e não desenvolvidas na formação acadêmica e, finalmente, algumas presentes nas duas instituições. Conclusões: Evidenciaram-se similaridades entre o requerido em uma instituição hospitalar e o ensinado na graduação, porém há a necessidade de centros formadores e gestores quanto a implementar estratégias para o desenvolvimento de competências clinicas e gerenciais.


Objective: To analyze the professional competencies required for the performance of hospital nurses and those implemented during their academic training. Method: Documentary-qualitative study; the scenarios were a public hospital institution and a higher education institution. The legal documents of those institutions were used as sources of evidence, whose data was collected from October 2016 to January 2017. Thematic inductive analysis was applied to the data. Results: The study allowed identifying clinical competencies such as professional attitude and technical and managerial competencies such as leadership and communication in both documents. Some competencies were implemented in academic training, but not required by the hospital organization; others, however, were required only by the hospital and not developed during training. Finally, some competencies were present in both institutions. Conclusions: Similarities were evidenced between the competencies required in the hospital and those taught in academic training. Nevertheless, there is a need for training centers and managers to implement strategies for the development of clinical and managerial competencies.


Objetivo: analizar las competencias profesionales requeridas para la actuación del enfermero hospitalario y aquellas implementadas durante su formación académica. Método: estudio documental, cualitativo, siendo los escenarios, una institución hospitalaria pública y una institución de enseñanza superior, teniendo como fuentes de evidencias documentos legales de dichas instituciones, siendo los datos recolectados de octubre de 2016 a enero de 2017. Se utilizó análisis temático inductivo de los datos. Resultados: permitieron identificar competencias clínicas, como postura profesional y habilidades técnicas, y gerenciales como liderazgo y comunicación, en ambos documentos, siendo algunas implementadas en la formación académica, pero no exigidas por la organización hospitalaria, otras requeridas sólo por el hospital y no desarrolladas en la formación académica y finalmente algunas presentes en las dos instituciones. Conclusiones: se evidenciaron semejanzas entre lo requerido en una institución hospitalaria y el enseñado en la graduación, pero hay la necesidad que centros formadores y gestores implementen estrategias para el desarrollo de competencias clínicas y gerenciales.


Assuntos
Humanos , Masculino , Feminino , Competência Profissional , Estratégias , Educação Superior , Hospitais , Enfermeiros
12.
Rev Esc Enferm USP ; 52: e03369, 2018 Nov 01.
Artigo em Inglês, Português | MEDLINE | ID: mdl-30403267

RESUMO

OBJECTIVE: To assess the Supervised Curricular Internship of the Nursing undergraduate course of two higher education institutions in the state of São Paulo based on specific skills described in the Brazilian National Curriculum Guidelines regarding preparation to the development of nursing care and management actions from the perceptions of professors, undergraduate students, and alumni. METHOD: Descriptive study in which a questionnaire was applied to 59 undergraduate students, 111 alumni, and 27 professors of a Nursing undergraduate course involved in the Supervised Curricular Internship in the analyzed institutions. RESULTS: The perceptions of the actors involved in the development of management and care actions were positive, although part of the alumni pointed out that the Supervised Curricular Internship does not allow the students to: develop all the activities performed by the nursing team; work towards comprehensive health care; professional technical confidence; and interfere with the work dynamics. CONCLUSION: In the perception of those involved, the Supervised Curricular Internship is seen as positive and important in the training of students, as it introduces students into the professional reality of nurses. However, this discipline still needs structural changes, particularly in the perception of the alumni.


Assuntos
Currículo , Educação em Enfermagem/métodos , Docentes de Enfermagem , Estudantes de Enfermagem , Adulto , Brasil , Competência Clínica , Educação Baseada em Competências/métodos , Feminino , Guias como Assunto , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários , Adulto Jovem
13.
Front Psychol ; 9: 1867, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30356689

RESUMO

Previous studies have suggested that transcranial direct current stimulation (tDCS) might improve exercise performance and alter psychophysiological responses to exercise. However, it is presently unknown whether this simple technique has similar (or greater) effects on running performance. The purpose of this study was, therefore, to test the hypothesis that, compared with sham and cathodal tDCS, anodal tDCS applied over the M1 region would attenuate perception of effort, improve affective valence, and enhance exercise tolerance, regardless of changes in physiological responses, during maximal incremental exercise. In a double-blind, randomized, counterbalanced design, 13 healthy recreational endurance runners, aged 20-42 years, volunteered to participate in this study. On three separate occasions, the subjects performed an incremental ramp exercise test from rest to volitional exhaustion on a motor-driven treadmill following 20-min of brain stimulation with either placebo tDCS (sham) or real tDCS (cathodal and anodal). Breath-by-breath pulmonary gas exchange and ventilation and indices of muscle hemodynamics and oxygenation were collected continuously during the ramp exercise test. Ratings of perceived exertion (RPE) and affective valence in response to the ramp exercise test were also measured. Compared with sham, neither anodal tDCS nor cathodal tDCS altered the physiological responses to exercise (P > 0.05). Similarly, RPE and affective responses during the incremental ramp exercise test did not differ between the three experimental conditions at any time (P > 0.05). The exercise tolerance was also not significantly different following brain stimulation with either sham (533 ± 46 s) or real tDCS (anodal tDCS: 530 ± 44 s, and cathodal tDCS: 537 ± 40 s; P > 0.05). These results demonstrate that acute tDCS applied over the M1 region did not alter physiological responses, perceived exertion, affective valence, or exercise performance in recreational endurance runners.

14.
Rev Bras Enferm ; 71(suppl 4): 1514-1521, 2018.
Artigo em Inglês, Português | MEDLINE | ID: mdl-30088619

RESUMO

OBJECTIVE: to analyze nursing university students' perception of the professional skills to act in the hospital setting developed during their academic training, and what strategies are being created for the development of these skills during their performance. METHOD: an exploratory, qualitative study in which 40 nursing university students participated. The data were collected from September to December 2016 and conducted thematic inductive analysis. RESULTS: clinical skills were identified that could be learned and previously developed at the undergraduate level; and management skills learned during undergraduate education and developed only in the hospital environment. Strategies for the development of skills were identified, such as individual study and Permanent Education, by the employing institution. FINAL CONSIDERATIONS: it was evidenced that college contributed in significant proportions for learning and development of some clinical and management skills in the hospital. Still, despite the identified strategies, managers and training centers need to continuously implement strategies for the development of new skills in nurses.


Assuntos
Competência Clínica/legislação & jurisprudência , Recursos Humanos de Enfermagem no Hospital/normas , Organização e Administração/normas , Estudantes de Enfermagem/psicologia , Adulto , Bacharelado em Enfermagem/métodos , Feminino , Humanos , Masculino , Recursos Humanos de Enfermagem no Hospital/psicologia , Percepção , Pesquisa Qualitativa , Universidades/organização & administração
15.
Cult. cuid ; 22(51): 22-30, mayo-ago. 2018. ilus
Artigo em Português | IBECS | ID: ibc-175663

RESUMO

Objetivo: Caracterizar as estratégias de educação permanente desenvolvidas pelos enfermeiros atuantes em unidades hospitalares oncológicas. Metodologia: Trata-se de um estudo exploratório, de abordagem qualitativa, tendo como desenho metodológico o estudo de caso múltiplo. Esta investigação foi realizada em Unidades Oncológicas de dois Hospitais de Ensino e participaram 30 enfermeiros. Para a coleta de dados utilizamos entrevistas semiestruturadas e a análise dos dados foi realizada por meio da análise temática. Resultados: Estratégias de educação fornecidas pelas instituições hospitalares são os treinamentos admissionais, cursos e eventos científicos, sobre assuntos diversos, não sendo relatado preparo específico na área de oncologia, fazendo com que os profissionais destas unidades busquem por instituições especializadas a fim de suprir o seu desenvolvimento profissional quanto as competências necessárias para a sua atuação. Quanto às estratégias de educação desenvolvidas pelos enfermeiros destaca-se o ensino prático a partir das rotinas do serviço. Conclusão: Este estudo contribuirá para que os enfermeiros reflitam sobre sua práxis considerando a integralidade do cuidado prestado ao paciente oncológico, definindo novas modalidades, mecanismos e instrumentos para capacitação em serviço. Assim como as instituições favorecerem a capacitação destes profissionais utilizando estratégias de ensino atualizadas neste setor


Objetivo: Caracterizar las estrategias de aprendizaje permanente desarrolladas por las enfermeras que trabajan en hospitales oncológicos. Metodología: Se trata de un estudio exploratorio de abordaje cualitativo, con el diseño metodológico del estudio de casos múltiples. Esta investigación se llevó a cabo en las Unidades de Oncología del participaron dos hospitales universitarios y 30 enfermeras. Para recoger los datos que hemos utilizado entrevistas semiestruturadas y análisis de datos se realizó mediante el análisis temático. Resultados: Estrategias de educación proporcionados por los hospitales son la formación de admisión, cursos y eventos científicos sobre diversos temas, no se informa preparación específica en oncología, por lo que los profesionales de estas unidades buscan por instituciones especializadas a cumplir con su desarrollo profesional como las habilidades necesarias para su funcionamiento. En cuanto a las estrategias de educación desarrollados por enfermeras resaltar la enseñanza práctica de las rutinas de servicio. Conclusión: Este estudio ayudará a las enfermeras a reflexionar sobre su práctica teniendo en cuenta la atención integral a pacientes con cáncer, la definición de nuevos procedimientos, mecanismos e instrumentos para la formación en el empleo. A medida que las instituciones favorecen la formación de estos profesionales que utilizan estrategias de enseñanza actualizada en este sector


Objective: Characterize the permanent training strategies developed by oncology nurses working in hospitals. Methodology: This is an exploratory study, a qualitative approach, and the methodological design the multiple case study. This research was performed in Oncology Units of two Teaching Hospitals and 30 nurses participated. To collect data used semi-structured interviews and data analysis was performed using thematic analysis. Results: Strategies of education provided by the hospitals are pre-employment training, courses and scientific meetings, on various subjects, not being reported specific preparation in the area of oncology causing the professionals in these units, seek for specialized institutions in order to meet their professional development as necessary for his performance skills. As the strategies of education performed by nurses highlights the practical teaching from the routines of the service. Conclusion: This study will help nurses reflect on their practice considering the comprehensiveness of care provided to cancer patients, defining new modes, mechanisms and instruments for in-service training. Thus as institutions favor the training of these professionals using updated teaching strategies in this sector


Assuntos
Humanos , Recursos Humanos de Enfermagem no Hospital/educação , Enfermagem Oncológica/educação , Educação em Enfermagem , Educação Continuada , Análise Qualitativa , Brasil
16.
Membranes (Basel) ; 8(3)2018 Jul 21.
Artigo em Inglês | MEDLINE | ID: mdl-30037095

RESUMO

Concentration polarization is intrinsically associated with the selective character of membranes and often means flux decline and which causes a subsequent decrease of ultrafiltration and nanofiltration performance. More important is the fact that it acts as a precursor of membrane fouling and creates severe fouling problems in the longer times range. The quantification of its dependence on the operating parameters of cross-flow velocities and transmembrane pressures makes recourse to the film theory to introduce mass-transfer coefficients that generally are calculated by dimensionless correlations of the Sherwood number as a function of the Reynolds and Schmidt numbers. In the present work, the mass-transfer coefficients are obtained through the fitting of experimental results by the pressure variation method. The ultrafiltration/nanofiltration of the winery wastewaters from the racking operation is carried out with the membranes ETNA 01PP (Alfa Laval) and NF 270 (Dow Filmtec) under a wide range of cross-flow velocities and transmembrane pressures up to 15 bar.

17.
Chemosphere ; 210: 615-623, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30031345

RESUMO

The roles of the anode material, boron-doped diamond (BDD), with different boron (B) and substrate Silicon (Si) or Niobium (Nb) content, and one dimensionally stable anode (DSA®), were evaluated in the oxidation of norfloxacin (NOR) by electrochemical advanced oxidation process (EAOP). The effect of other components in real wastewater on the performance of EAOP was also studied. The anode materials were characterized by cyclic voltammetry, regarding diamond quality, electro-generation of oxidants and NOR oxidation mechanism (direct and/or indirect). The results showed that the anode material influences on the NOR oxidation pathway, due to distinct characteristics of the substrate and the coating. Apparently, low difference in diamond-sp³/sp2-carbon ratio (Si/BDD100 × Si/BDD2500) does not leads to significant differences in the EAOP. On the other hand, the variation in the sp³/sp2 ratio seems to be higher when Si/BDD2500 and Nb/BDD2500 are compared, which would explain the best current efficiency result for Si substrate. However, the Nb substrate presented a similar current efficiency and a 60% lower energy consumption. Dissolved organic matter (DOM) present in the real wastewater affect the EAOP-Nb/BDD due to HO and persulfate ions scavenged. However, when supporting electrolyte was added to a real wastewater spiked with NOR, the NOR decay reaches similar values found to the synthetic one. Due to the energy saving and mechanical properties, Nb substrate presents some technological advantages in relation to Si, which can facilitate the application to industrial levels.


Assuntos
Técnicas Eletroquímicas/métodos , Nióbio/química , Norfloxacino/química , Águas Residuárias/química , Antibacterianos/química , Boro/química , Eletrodos , Oxidantes , Oxirredução , Silício/química , Água/química , Poluentes Químicos da Água/química
18.
Rev Gaucha Enferm ; 38(3): e0060, 2018 Mar 12.
Artigo em Português, Inglês | MEDLINE | ID: mdl-29538606

RESUMO

OBJECTIVE: To identify the available scientific evidence about the use of instruments for the evaluation of leadership in health and nursing services and verify the use of leadership styles/models/theories in the construction of these tools. METHOD: Integrative literature review of indexed studies in the LILACS, PUBMED, CINAHL and EMBASE databases from 2006 to 2016. RESULTS: Thirty-eight articles were analyzed, exhibiting 19 leadership evaluation tools; the most used were the Multifactor Leadership Questionnaire, the Global Transformational Leadership Scale, the Leadership Practices Inventory, the Servant Leadership Questionnaire, the Servant Leadership Survey and the Authentic Leadership Questionnaire. CONCLUSIONS: The literature search allowed to identify the main theories/styles/models of contemporary leadership and analyze their use in the design of leadership evaluation tools, with the transformational, situational, servant and authentic leadership categories standing out as the most prominent. To a lesser extent, the quantum, charismatic and clinical leadership types were evidenced.


Assuntos
Administração de Serviços de Saúde , Liderança , Enfermagem/organização & administração , Inquéritos e Questionários , Humanos , Modelos Teóricos
19.
Rev. bras. enferm ; 71(1): 126-134, Jan.-Feb. 2018. tab
Artigo em Inglês | LILACS-Express | ID: biblio-898358

RESUMO

ABSTRACT Objective: to evaluate the use of Standard Operational Protocols (SOPs) in the professional practice of the nursing team based on the theoretical framework of Donabedian, as well as to identify the weaknesses and potentialities from its implementation. Method: Evaluative research, with quantitative approach performed with nursing professionals working in the Health Units of a city of São Paulo, composed of two stages: document analysis and subsequent application of a questionnaire to nursing professionals. Results: A total of 247 nursing professionals participated and reported changes in the way the interventions were performed. The main weaknesses were the small number of professionals, inadequate physical structure and lack of materials. Among the potentialities were: the standardization of materials and concern of the manager and professional related to patient safety. Conclusion: The reassessment of SOPs is necessary, as well as the adoption of a strategy of permanent education of professionals aiming at improving the quality of care provided.


RESUMEN Objetivo: Evaluar la utilización de los Procedimientos Operacionales Patrón (POP) en la práctica profesional del equipo de enfermería, con base en el referencial teórico de Donabedian, bien como identificar las fragilidades y potencialidades a partir de su implantación. Método: Pesquisa evaluativa, con abordaje cuantitativa realizada con profesionales de enfermería actuantes en las Unidades de Salud de un municipio de São Paulo, compuesta por dos etapas: análisis documental y posterior aplicación de cuestionario a los profesionales de enfermería. Resultados: Participaron 247 profesionales de enfermería que han mencionado cambios en la manera de ejecución de las intervenciones estudiadas. Las principales fragilidades apuntaron para el número reducido de profesionales, inadecuación de la estructura física y ausencia de materiales. Entre las potencialidades se destacaron: la estandarización de los materiales y la preocupación del gestor y del profesional relacionada a la seguridad del paciente. Conclusión: La reevaluación de los POP es necesaria, bien como la adopción de la estrategia de educación permanente de los profesionales visando la mejoría de la cualidad de la asistencia prestada.


RESUMO Objetivo: avaliar a utilização dos Procedimentos Operacionais Padrão (POP) na prática profissional da equipe de enfermagem, com base no referencial teórico de Donabedian, bem como identificar as fragilidades e potencialidades a partir da sua implantação. Método: Pesquisa avaliativa, com abordagem quantitativa realizada com profissionais de enfermagem atuantes nas Unidades de Saúde de um município paulista, composta por duas etapas: análise documental e posterior aplicação de questionário aos profissionais de enfermagem. Resultados: Participaram 247 profissionais de enfermagem que referiram mudanças na forma de execução das intervenções estudadas. As principais fragilidades apontaram para o número reduzido de profissionais, inadequação da estrutura física e ausência de materiais. Entre as potencialidades destacaram-se: a padronização dos materiais e a preocupação do gestor e do profissional relacionada à segurança do paciente. Conclusão: A reavaliação dos POP é necessária, bem como a adoção da estratégia de educação permanente dos profissionais visando à melhoria da qualidade da assistência prestada.

20.
Rev. bras. enferm ; 71(1): 126-134, Jan.-Feb. 2018. tab
Artigo em Inglês | LILACS-Express | ID: biblio-898389

RESUMO

ABSTRACT Objective: to evaluate the use of Standard Operational Protocols (SOPs) in the professional practice of the nursing team based on the theoretical framework of Donabedian, as well as to identify the weaknesses and potentialities from its implementation. Method: Evaluative research, with quantitative approach performed with nursing professionals working in the Health Units of a city of São Paulo, composed of two stages: document analysis and subsequent application of a questionnaire to nursing professionals. Results: A total of 247 nursing professionals participated and reported changes in the way the interventions were performed. The main weaknesses were the small number of professionals, inadequate physical structure and lack of materials. Among the potentialities were: the standardization of materials and concern of the manager and professional related to patient safety. Conclusion: The reassessment of SOPs is necessary, as well as the adoption of a strategy of permanent education of professionals aiming at improving the quality of care provided.


RESUMEN Objetivo: Evaluar la utilización de los Procedimientos Operacionales Patrón (POP) en la práctica profesional del equipo de enfermería, con base en el referencial teórico de Donabedian, bien como identificar las fragilidades y potencialidades a partir de su implantación. Método: Pesquisa evaluativa, con abordaje cuantitativa realizada con profesionales de enfermería actuantes en las Unidades de Salud de un municipio de São Paulo, compuesta por dos etapas: análisis documental y posterior aplicación de cuestionario a los profesionales de enfermería. Resultados: Participaron 247 profesionales de enfermería que han mencionado cambios en la manera de ejecución de las intervenciones estudiadas. Las principales fragilidades apuntaron para el número reducido de profesionales, inadecuación de la estructura física y ausencia de materiales. Entre las potencialidades se destacaron: la estandarización de los materiales y la preocupación del gestor y del profesional relacionada a la seguridad del paciente. Conclusión: La reevaluación de los POP es necesaria, bien como la adopción de la estrategia de educación permanente de los profesionales visando la mejoría de la cualidad de la asistencia prestada.


RESUMO Objetivo: avaliar a utilização dos Procedimentos Operacionais Padrão (POP) na prática profissional da equipe de enfermagem, com base no referencial teórico de Donabedian, bem como identificar as fragilidades e potencialidades a partir da sua implantação. Método: Pesquisa avaliativa, com abordagem quantitativa realizada com profissionais de enfermagem atuantes nas Unidades de Saúde de um município paulista, composta por duas etapas: análise documental e posterior aplicação de questionário aos profissionais de enfermagem. Resultados: Participaram 247 profissionais de enfermagem que referiram mudanças na forma de execução das intervenções estudadas. As principais fragilidades apontaram para o número reduzido de profissionais, inadequação da estrutura física e ausência de materiais. Entre as potencialidades destacaram-se: a padronização dos materiais e a preocupação do gestor e do profissional relacionada à segurança do paciente. Conclusão: A reavaliação dos POP é necessária, bem como a adoção da estratégia de educação permanente dos profissionais visando à melhoria da qualidade da assistência prestada.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA