341 research outputs found
THE MEDIATING EFFECT OF WORKPLACE SPIRITUALITY ON THE RELATIONSHIP BETWEEN WORK VALUES AND ORGANIZATIONAL CITIZENSHIP BEHAVIOR OF LOCAL GOVERNMENT UNIT EMPLOYEES
The purpose of this study was to determine the mediating effect of workplace spirituality on the relationship between work values and organizational citizenship behavior. Utilizing quantitative, non-experimental design via correlational technique, data were obtained from 263 respondents of the study who are employees of the local government office in the provincial government of Davao del Sur. The researcher utilized a stratified random sampling technique and a face-to-face survey mode of data collection. The researcher also utilized the statistical tools mean, Pearson r, and Medgraph using Sobel z-test. This study is aligned with the United Nations Sustainable Development Goals numbers 8 and 16. From the results of the study, it was found that there is a high level of work values, a high level of organizational citizenship behavior, and a high level of workplace spirituality among employees of the local government unit. Also, results revealed that there is a significant relationship between work values and organizational citizenship behavior, a significant relationship between work values and workplace spirituality and a significant relationship between workplace spirituality and organizational citizenship behavior. Further, workplace spirituality has a partial mediating effect on the relationship between work values and organizational citizenship behavior among employees of the local government unit. Article visualizations
Dynamics of sense-making and development of the narrative in the clinical exchange
The present work is aimed at exploring the relationship between the
dynamics of sense-making carried out by the clinical exchange and the
content of the patient’s narrative. To this end the relationship between the
formal and functional mapping of a psychotherapy carried out by the
Discourse Flow Analysis (DFA) and the analysis of the patient’s narrative
provided by the Innovative Moment Coding System (IMCS) have been
compared. The comparison concerns a 15-session good outcome Emotion-
Focused Therapy (Lisa's case). Findings highlight the association between the
formal and functional characteristics of the clinical dialogue and the content
of the narrative. More in particular, an association between the U-shape
trajectory of the super-ordered meaning depicted by DFA and the evolution of
the innovative content of the narrative enucleated by the IMCS were found
Influence of water sample storage protocols in chemiluminescence detection of trace elements by batch or FI modes
[EN] This paper shows the influence of different sample storage protocols, on the chemiluminescence signal of some metal ions. The storage protocols studied were: acid addition (HCl or HNO3) and no reagent addition to filtered and refrigerated (T=4 °C) samples. Light emission was produced for the chemiluminescence reaction between luminol and hydrogen peroxide in buffer carbonate conditions (pH 10.8) catalysed by Cr(III), Co(II) and Cu(II). Batch and/or flow modes in different conditions were tested. Fe(II), Fe(III), Ni(II) and Mn(II) did not give chemiluminescence in the studied conditions. A parallel study of sensitivity and selectivity was performed. Then the presence or absence of the masking agent EDTA, added to samples or used in the carrier stream, is assayed. If the samples are acidified with HNO3, a previous neutralisation is needed using batch mode. The determination of Cr(III) is independent of storage protocol by flow injection (FI) method; however, the determination of Co(II) or Cu(II) or total determination of three metals requires the conditioning of standards. Detection limits achieved are ranged between 0.5 and 2 ¿g l¿1. For batch mode, detection limits are better for unacidified samples and worse for carbonate-neutralised samples. The influence of storage protocols was validated using standard metal mixtures and calibration solutions. The use of standard reference material (SRM© 1640) (Trace elements in natural water) corroborates the previous statements and validates the accuracy of the different approaches underlined. This paper demonstrates that it is possible to determine Cr(III) selectively in natural waters.The authors are grateful to the DGICYT (Project No. PB 97-1387) for financial support. Y.M.M., S.M.L. and L.A.T.G. express their gratitude to Ministerio de Educación y Cultura (Spain) for the predoctoral grant.Molliner Martínez, Y.; Meseguer-Lloret, S.; Tortajada-Genaro, LA.; Campins-Falcó, P. (2003). Influence of water sample storage protocols in chemiluminescence detection of trace elements by batch or FI modes. Talanta. 60(1):257-268. https://doi.org/10.1016/S0039-9140(03)00068-7S25726860
A guide to avoid method bias of chromium(III, VI) chemiluminescence determination by luminol-hydrogen peroxide reaction. Application to unknown water samples
This is an Author's Accepted Manuscript of an article published in International Journal of Environmental & Analytical Chemistry, 83, 5, 405-416. DOI: 10.1080/0306731031000101383
© Taylor & Francis, available online at: http://doi.org/10.1080/0306731031000101383[EN] Cr(III) and/or Cr(VI) determinations based on light emission produced by luminol oxidation by hydrogen peroxide in basic aqueous solution catalyzed by Cr(III) were studied in order to diagnose and/or avoid method bias. The calibration step was optimized, and the usefulness of the method for speciating chromium was tested. The use of the standard addition method in the linear interval concentration range made it possible to diagnose the accuracy of the method for real samples. Good results were obtained for several real water samples containing chromium at different concentrations. The proposed protocol made the method traceable with an appropriate certified reference material and with the reference method.The authors are grateful to the DGICYT (Project n PB 97-1387) and to the Generalitat
Valenciana (GR-0036) for financial support.Meseguer-Lloret, S.; Campins-Falcó, P.; Tortajada-Genaro, LA.; Blasco-Gómez, F. (2003). A guide to avoid method bias of chromium(III, VI) chemiluminescence determination by luminol-hydrogen peroxide reaction. Application to unknown water samples. International Journal of Environmental & Analytical Chemistry. 83(5):405-416. https://doi.org/10.1080/0306731031000101383S40541683
Multivariate calibration applied to simultaneous chemiluminiscence determination of Cobalt and Chromium
The final publication is available at http://doi.org/ 10.1007/s00216-002-1637-8[EN] The simultaneous determination of chromium and cobalt in water samples has been studied. Chemiluminescence registers based on the luminol-hydrogen peroxide reaction have obtained by a batch procedure. PLS algorithms have employed to model the time-response (formation and destruction of emitter).
The influence of the presence of two metals and the non-linearity relationship between response and concentration have been evaluated in the signal. Different experimental designs and the selection of variables have been tested. The calibration set has been selected based on two criteria: unicomponent and/or bicomponent standard solutions and the slope calculated from linear univariate calibration. The response has been modelled providing high percentages of explained variance, robust models and low prediction errors.
The proposed methodology has been validated using test standard solutions and a standard reference material of fresh water. Accurate results have proved the advantages of this method for the simultaneous determination of chromium and cobalt in water samples.The authors are grateful to the DGICYT (Project no PB 97–1387) for financial support. S.M.Ll. and L.A.T.G. express their gratitude to Ministerio de Educación y Cultura (Spain) for the predoctoral grant.Campins-Falcó, P.; Tortajada-Genaro, LA.; Meseguer-Lloret, S.; Bosch-Reig, F. (2002). Multivariate calibration applied to simultaneous chemiluminiscence determination of Cobalt and Chromium. Analytical and Bioanalytical Chemistry. 374(7-8):1223-1229. https://doi.org/10.1007/s00216-002-1637-8S122312293747-
Organizational unlearning context fostering learning for customer capital through time: lessons from smes in the telecommunications industry
In situations where organizations and their members face changing environments it is necessary that old knowledge represented in processes and routines be challenged prior to the addition of new knowledge. It could be claimed that for learning to occur on an organizational level it must be possible for unlearning to take place. However, there have been few, if any, studies providing direct empirical evidence for this relationship.
In the analysis presented in this paper we explicitly include time as a variable in order to model a situation where unlearning at time (t0) in order to learn more efficiently at a moment after occurs prior to time (t1). In addition, we also examine the relationship between organizational learning and customer capital. These relationships are examined through an empirical investigation of 107 Spanish small and medium sized enterprises (SMEs) from the Telecommunications industry. The results indicate that the effect of the unlearning at a moment (t0) on customer capital at a moment (t1) is depends on whether the learning taking place at (t1) can be characterized as either exploration or exploitation
Dietary calcium: strategies to optimize intake
Calcium is an essential nutrient required for numerous biological functions. Studies have demonstrated an association between low calcium intake and chronic diseases, such as osteoporosis, colon cancer, hypertension, and obesity. However, most Brazilians do not meet the adequate intake for calcium. This review focuses on the endogenous (age, hormonal state) and exogenous (phytate, oxalate, sodium, bioactive compounds and vitamin D) factors that can influence calcium absorption. The main methods used for evaluating calcium absorption and bioavailability. The potential factors for the low calcium intake: 1) Food habits - substitution of milk for soft drinks, eating away from home and skipping meals specially breakfast; 2) High cost of dairy food. Besides, this article discuss strategies to optimize calcium intake: 1) Increase knowledge of the relationship between calcium and health and the main food sources; 2) Increase availability of calcium-fortified foods; 3) Supplement use for target groups - when and how administrate calcium salts.O cálcio é um nutriente essencial necessário em diversas funções biológicas. Estudos têm demonstrado a associação entre o baixo consumo de cálcio e doenças crônicas, entre elas osteoporose, câncer de colón, hipertensão arterial e obesidade. Entretanto, grande parte da população brasileira apresenta consumo de cálcio abaixo do recomendado. Este artigo objetiva revisar os fatores endógenos (idade e estado hormonal) e exógenos (fitatos, oxalatos, sódio, compostos bioativos e vitamina D) que influenciam a absorção do cálcio, bem como as principais metodologias utilizadas para avaliar a absorção e biodisponibilidade desse nutriente. Discorre-se sobre os possíveis fatores para o baixo consumo de cálcio: 1) Hábito alimentar - substituição de leite por bebidas com baixo teor de cálcio como o refrigerante, refeições realizadas fora de casa e a não realização de refeições como o café da manhã; 2) Alto custo dos alimentos fontes de cálcio. Além disso, este artigo discute as estratégias para otimizar o consumo do cálcio, que incluem: 1) Aumentar o conhecimento sobre a importância do consumo de cálcio para a saúde e as principais fontes alimentares desse nutriente; 2) Aumentar a disponibilidade de alimentos fortificados com cálcio; 3) Uso de suplementos em grupos específicos - quando e como administrar os sais de cálcio.Universidade de São Paulo Faculdade de Saúde Pública Departamento de NutriçãoUniversidade Federal de São Paulo (UNIFESP) EPMUNIFESP, EPMSciEL
Niacin modulates pro-inflammatory cytokine secretion. A potential mechanism involved in its anti-atherosclerotic effect
The pathogenesis of atherosclerosis includes the assignment of a critical role to cells of the monocyte/macrophage lineage and to pro-inflammatory cytokines. Niacin is known to improve lipid metabolism and to produce beneficial modification of cardiovascular risk factors. The aim of this work was to investigate if Niacin is able to modulate pro-inflammatory cytokine production in macrophages in a murine model of atherosclerosis. For this purpose C57Bl/6J mice fed with atherogenic diet (AGD) or with conventional chow diet were used. The AGD group showed an increase in body weight and in total plasma cholesterol, with no differences in triglyceride or HDL levels. Lesions in arterial walls were observed. The characterization of Niacin receptor showed an increase in the receptor number of macrophages from the AGD group. Macrophages from control and AGD animals treated in vitro with an inflammatory stimulus showed elevated levels of IL-6, IL-1 and TNF-α, that were even higher in macrophages from AGD mice. Niacin was able to decrease the production of pro-inflammatory cytokines in stimulated macrophages. Similar effect of Niacin was observed in an in vivo model of inflammation. These results show an attenuating inflammatory mechanism for this therapeutic agent and would point out its potential action in plaque stabilization and in the prevention of atherosclerosis progression. Furthermore, the present results provide the basis for future studies on the potential contribution of Niacin to antiinflammatory therapies.Fil: Lipszyc, P.. Universidad de Buenos Aires. Facultad de Medicina. Cátedra de Farmacología; Argentina;Fil: Cremaschi, Graciela Alicia. Pontificia Universidad Católica Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos; Argentina;Fil: Zorrilla Zubilete, María Aurelia. Universidad de Buenos Aires. Facultad de Medicina. Cátedra de Farmacología; Argentina;Fil: Aon Bertolino, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas (i); Argentina;Fil: Capani, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas (i); Argentina;Fil: Genaro, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos; Argentina; Universidad de Buenos Aires. Facultad de Medicina. Cátedra de Farmacología; Argentina;Fil: Wald, Miriam Ruth. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos; Argentina; Universidad de Buenos Aires. Facultad de Medicina. Cátedra de Farmacología; Argentina
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