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Search Results: 1 - 10 of 275156 matches for " Chaves Enaura H. B. "
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O estresse na atividade gerencial do enfermeiro
Lautert,Liana; Chaves,Enaura H. B.; Moura,Gisela M. S. S. de;
Revista Panamericana de Salud Pública , 1999, DOI: 10.1590/S1020-49891999001100007
Abstract: according to several studies, nursing, especially in hospital settings, is one of the most stressful professions. the objective of this study was to identify the sources of stress related to the administrative tasks of nurses working in a hospital, as well as the main health changes that stress caused these professionals. the quantitative survey was carried out in 1996 with a sample of 207 nurses at a university hospital in the city of porto alegre, in the state of rio grande do sul, brazil. a questionnaire was used to collect data on stress sources and symptoms. the questionnaire also gathered demographic data, as well as information on the nurses' feelings about their working conditions. the average age of the study participants was 35.8 years, and the average time working at the hospital was 8.5 years. among participants, 48% were considered to be stressed. work overload was the stress source that best predicted relative risk of stress (6.1). in terms of stress symptoms, the most commonly reported ones were cardiovascular changes. however, gastrointestinal changes were related to a higher risk of stress (5.3). managing other staff was the stress source that had the greatest number of significant correlations with stress symptoms. on the other hand, immunologic changes were the symptoms that had the highest correlation with stress sources. our results suggest that stress related to administrative tasks in nursing may trigger changes in nurses' health.
O estresse na atividade gerencial do enfermeiro
Lautert Liana,Chaves Enaura H. B.,Moura Gisela M. S. S. de
Revista Panamericana de Salud Pública , 1999,
Abstract: O trabalho do enfermeiro, principalmente no ambito hospitalar, está, conforme diversos estudos, entre os que mais geram estresse em seus profissionais. Dessa forma, o objetivo desta investiga o foi identificar as fontes geradoras de estresse na atividade gerencial do enfermeiro que trabalha no hospital e as principais altera es que o estresse pode acarretar sobre a saúde desse profissional. Trata-se de uma pesquisa quantitativa com uma amostra de 207 enfermeiros, realizada em 1996 em um hospital universitário na cidade de Porto Alegre, RS, Brasil. Utilizou-se um questionário auto-aplicável com quest es relativas às fontes de estresse e à presen a de sintomas de estresse. O questionário incluiu, também, quest es sobre os sentimentos dos enfermeiros em rela o a determinadas condi es de trabalho e levantou dados demográficos e hábitos de vida da amostra. Os participantes do estudo tinham idade média de 35,8 anos e trabalhavam, em média, há 8,5 anos nos diferentes setores do hospital. Dos respondentes, 48% estavam estressados. A sobrecarga de trabalho foi a fonte que determinou a maior estimativa de risco relativo de estresse (6,1). Em rela o aos sintomas de estresse, as altera es cardiovasculares foram as que tiveram maior incidência nos auto-relatos. No entanto, as altera es gastrintestinais estiveram relacionadas com um risco maior para estresse (5,3). O gerenciamento de pessoal foi a fonte de estresse que apresentou maior número de correla es significativas com os sintomas de estresse. Por outro lado, as altera es imunitarias foram as que mais se correlacionaram com as fontes de estresse. Os resultados sugerem que o estresse gerado pela atividade gerencial do enfermeiro desencadeia altera es na saúde.
Effects of homeophatic medication Arnica montana and Ruta graveolens on weight gain, food and water ccnsumption and food conversion in broilers Efectos de la medicaci 3n homeop tica Arnica montana y Ruta graveolans en el aumento de peso, consumo de agua y alimento y conversi 3n de alimento en pollos. Efeitos da medica § £o homeop tica Arnica montana e Ruta graveolans no aumento de peso, consumo de gua e alimento e convers £o de alimento em frangos.
H. M. Rosi Cruvinel,A. H. Chaves,B. Goloubeff
International Journal of High Dilution Research , 2006,
Estimativa da acidez potencial pelo método do pH SMP em solos da Microrregi?o Homogênea Brejo Paraibano
Chaves, Lucia H. G.;Chaves, Iêde B.;Vasconcelos, Ana C. F.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2007, DOI: 10.1590/S1415-43662007000400009
Abstract: the use of the ph smp to estimate the potential acidity has advantages in relation to the 0.5 mol l-1, ph 7, calcium acetate method, but requires previous edaphic regionalization to estimate the potential acidity. the objectives of this study were to evaluate the soil-water-buffer ratio more adapted to soils from the homogeneous micro-region of brejo paraibano and to establish an equation to estimate the potential acidity of these soils by determination of the equilibrium ph of the soil suspension with the smp solution. one hundred and twenty representative soils samples of the region were analyzed by the conventional calcium acetate method. also determined was the ph smp in the equilibrium suspensions soil-water-buffer 10:10:5, 10:20:10 and 10:25:5. the results have demonstrated that the best correlation between h + al values and ph smp was obtained with the 10:10:5 suspension and that the equation y = 164.31 - 47.26 x + 3.4717 x2, expressing h + al (y) values in cmolc dm2, can be used to estimate h + al values of the studied soils.
Magnon Specific Heat of Single Crystal Borocarbides RNi2B2C (R=Tm, Er, Ho, Dy, Tb, Gd)
M. El Massalami,R. E. Rapp,F. A. B. Chaves,H. Takeya,C. M. Chaves
Physics , 2003,
Abstract: Zero-field specific heat of the single crystals RNi2B2C (R= Er, Ho, Dy, Tb, Gd) was measured within the temperature range 0.1 K
On the ferromagnetic structure of the intermetallic borocarbide TbCo2B2C
M. ElMassalami,R. Moreno,R. M. Saeed,F. A. B. Chaves,C. M. Chaves,H. Takeya,B. Ouladdiaf,M. Amara
Physics , 2008,
Abstract: Based on magnetization, specific heat, magnetostriction, and neutron diffraction studies on single-crystal TbCo2B2C, it is found out that the paramagnetic properties, down to liquid nitrogen temperatures, are well described by a Curie-Weiss behavior of the Tb+3 moments. Furthermore, below Tc= 6.3 K, the Tb-sublattice undergoes a ferromagnetic (FM) phase transition with the easy axis being along the (100) direction and, concomitantly, the unit cell undergoes a tetragonal-to-orthorhhombic distortion. For fields up to 90 kOe, no field-induced splitting of the Co 3d orbitals was observed; as such the internal field must be well below the critical value needed to polarize the Co 3d subsystem. The manifestation of a FM state in TbCo2B2C is unique among all other isomorphous borocarbides, in particular TbNi2B2C (Tn=15 K, incommensurate modulated magnetic state) even though the Tb-ions in both isomorphs have almost the same crystalline electric field properties. The difference in the magnetic modes of these Tb-based isomorphs is attributed to a difference in their exchange couplings caused by a variation in their lattice parameters and in the position of their Fermi levels.
Tempo despendido na execu??o do processo de enfermagem em um centro de tratamento intensivo
Almeida, Miriam de Abreu;Severo, Isis Marques;Chaves, Enaura Brand?o;Barreto, Luciana Nabinger Menna;Borba, Daniela Marona;
Escola Anna Nery , 2012, DOI: 10.1590/S1414-81452012000200012
Abstract: this study had as a goal the measure of time spent on an intensive care unit (icu) by nurses when carrying out the steps of the nursing process (np). it is a descriptive research, observational and exploratory, using quantitative methodology. steps of the np as carried out were timed by six nurses on 29 icu patients. research was approved by the institutional ethics review board. time was measured in the following steps: daily patient assessment: 8.34 (3.78); diagnosis and nursing prescription: 3.65 (2.27-5.45); scheduling nursing prescription: 2.30 (1.14) and evaluation of care: 11.29 (2.55). nurses spent 25.58 minutes per patient when carrying out the np. the data provide a way to measure human resources required for caring for critical patients, so as to qualify care giving.
Propriedades químicas do solo aluvial da Ilha de Assun??o - Cabrobó (Pernambuco)
Chaves, L. H. G.;Tito, G. A.;Chaves, I. B.;Luna, J. G.;Silva, P. C. M.;
Revista Brasileira de Ciência do Solo , 2004, DOI: 10.1590/S0100-06832004000300004
Abstract: the alluvial soil of the assun??o island, in the s?o francisco river, cabrobó, state of pernambuco, brazil, has been intensively cultivated with annual crops under irrigation. the present yields are unsatisfactory due to the use of inadequate agricultural practices that are not sustainable. this study aimed to survey the soil chemical properties in an area of 1,131 ha by collecting 1,053 samples in the 0-0.30 m surface soil layer. the samples were analyzed for chemical properties and the data were analyzed using descriptive statistics. the obtained results indicated that there was higher variability for aluminum, potassium and phosphorus concentration and for the percentage of sodium saturation. the lowest variability was observed for soil ph. the data did not present a normal distribution. most soil samples presented low aluminum, organic matter, and phosphorus concentrations. the soil ph, cec, calcium, magnesium, and potassium concentration were interpreted as appropriate for most crops and were classified as normal regarding the percentage of sodium saturation.
Crescimento de cultivares de girassol ornamental influenciado por doses de silício no solo Silicon fertilization on growth of ornamental sunflower cultivars
Jo?o T. L. Oliveira,Vinícius B. Campos,Lúcia H. G. Chaves,Doroteu H. Guedes Filho
Revista Brasileira de Engenharia Agrícola e Ambiental , 2013,
Abstract: Poucos s o os trabalhos experimentais através dos quais se analisou o crescimento do girassol ornamental em condi es de ambiente protegido. Objetivou-se ent o, no presente trabalho, avaliar doses de silicato de cálcio e magnésio no crescimento de duas cultivares de girassol ornamental. O experimento foi conduzido em casa de vegeta o no período de setembro a dezembro de 2010. Os tratamentos foram dispostos no delineamento inteiramente casualizado, com três repeti es, em um arranjo fatorial 5 x 2 referente às doses de 0; 2; 4; 6 e 8 g de Si por vaso e as cultivares de girassol ornamental Jardim Amarelo Alto e Sol Vermelho. As unidades experimentais foram constituídas de vasos plásticos com capacidade de 10 L, com 5,33 L de solo. Todas as unidades experimentais receberam aduba o com N:P2O5:K2O nas doses de 60-80-80 kg ha-1. As doses de silício aumentaram significativamente o diametro externo do capítulo e a abertura total do bot o floral (dias) de plantas de girassol. A cultivar Sol Vermelho apresentou melhor resposta à aplica o de silício em rela o ao Jardim Amarelo Alto. Few experimental studies have been carried out to analyze growth of the ornamental sunflower under protected environment conditions. Thus, the aim of this study was to evaluate effects of different silicon doses on the growth of two cultivars of ornamental sunflower. The experiment was conducted in a greenhouse, from September to December 2010. The treatments were arranged in a completely randomized design with three replications in a 5 x 2 factorial scheme, referring to doses 0; 2; 4; 6 and 8 g of Si per pot and cultivars of ornamental sunflower Jardim Amarelo Alto and Sol Vermelho. Each experimental unit consisted of a plastic pot with a capacity of 10 L, with 5.33 L of soil. All experimental units were fertilized with N:P2O5:K2O in a dose of 60-80-80 kg ha-1. Doses of silicon significantly increased the external capitulum diameter and the total opening of flower bud (days) sunflower plant. The cultivar Sol Vermelho showed better response to the application of silicon compared to Jardim Amarelo Alto.
Identifica??o de componentes de óleos voláteis: Análise espectroscópica de misturas de sesquiterpenos
Brochini, Cláudia B.;Nú?ez, Cecilia V.;Moreira, Isabel C.;Roque, Nidia F.;Chaves, Mariana H.;Martins, Dirceu;
Química Nova , 1999, DOI: 10.1590/S0100-40421999000100008
Abstract: this paper describes a chromatographic method to fractionate volatile oils and to identify their sesquiterpenic constituents. the fractionation process includes flash chromatography over silica gel and chromatography over silica gel/agno3, utilising pentane, ch2cl2 and/or acetone as eluents. gc chromatograms were obtained in order to get the relative percentage of each constituent in the volatile oils, to get the retention time value of them as well as to analyse and combine the fractions eluted from the columns. such procedure afford mixtures of sesquiterpenes which are analysed by gc/ms, 13c and 1h nmr.
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