194 research outputs found

    A FOLLOWER - CENTRIC MODEL: PREDICTORS OF JOB SATISFACTION AND PERCEPTION OF LEADER EFFECTIVENESS IN LEBANESE REGISTERED NURSES

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    Leaders and their followers share the work environment; they live the same challenges, and face the same problems (Baker, 2007; Uhl-Bien et al., 2014). However, in nursing little is known about the effect of the quality of the manager – follower relationship and work engagement in formulating a follower’s perception of leadership and its impact on job satisfaction. In a country such as Lebanon that has the eighth lowest nurse density in the Eastern Mediterranean Region (EMR) and suffers from excessive nurse migration and low nurse satisfaction and retention rates (El-Jardali, Dimassi, Dumit, Jamal, & Mouro, 2009) understanding the factors influencing nurse satisfaction becomes a priority. It is also important for clinical nurse leaders to be associated with engaged and committed followers in order to achieve positive outcomes. Followers are direct care nurses who practice in acute care in the capacity of registered nurses and under the first level supervision of a nurse manager. Effective and engaged followers are those who show intelligence, commitment, integrity, independence, and courage (Kelley, 1988). The relationship between the leader and followers is not unidimensional, but it is rather an interdependent relationship. Followers expect their leaders to be reachable, honest, empathic, visionary, and to be involved in employee development (Sherman, 2012). Follower-centric relational predictors that impact nurses’ job satisfaction in acute care was the focus of this study. Using a predictive correlation design, this study examined the association between the registered nurses’ (RNs’) (a) quality of relationship with the nurse manager and (b) work engagement and how these variables impact the registered nurses’ (followers) perception of leadership effectiveness and job satisfaction. Findings of the study supported that better work engagement and positive follower-nurse manager relationship will impact an enhanced perception of leader effectiveness and increase RNs job satisfaction

    L'angiotensine II et ses récepteurs au niveau des cellules endothéliales endocardiques humaines rôle dans la modulation du calcium intracellulaire

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    L'angiotensine II (Ang II) est un octapeptide qui est le médiateur principal des actions physiologiques du système rénine-angiotensine. Ses effets sur le cerveau, les reins, les glandes surrénales, le muscle cardiaque et les vaisseaux sanguins incluant les cellules endothéliales vasculaires ont été bien étudiés. Cependant, son effet sur l'endothélium endocardique est encore obscur. Chez l'humain, l'Ang II relaie ses effets via 2 types de récepteurs, soient les récepteurs AT[indice inférieur 1] et AT[indice inférieur 2] . Dans la première partie de ce projet de recherche, nous avons étudié l'expression et la distribution de l'Ang II et de ses récepteurs AT[indice inférieur 1] et AT[indice inférieur 2] au niveau des cellules endothéliales endocardiques isolées des ventricules droit (CEEDs) et gauche (CEEGs) du coeur foetal humain âgé de 20 semaines. Dans la deuxième partie de cette étude, nous avons étudié l'effet de l'Ang II sur le niveau basal soutenu du calcium cytosolique ([Ca][indice inférieur c]) et du calcium nucléaire ([Ca][indice inférieur n]) au niveau des CEEDs et des CEEGs isolées des coeurs foetaux humains âgés de 20 semaines."--Résumé abrégé par UMI

    Les travailleurs d’agence : précarité d’emploi, groupes vulnérables sur-représentés et protection juridique dans le cadre d’une rupture d’emploi selon le service continu

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    Travail dirigé à l'École de relations industrielles (Faculté des arts et des sciences) en vue de l'obtention du grade de Maîtrise en relations industrielle

    Relationship of resistance to greenbugs and Hessian fly in segregating populations of hard red winter wheat

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    Digitized by Kansas State University Librarie

    IMMUNOMODULATORY ROLE OF HONEY AND PROPOLIS ON CARBON TETRACHLORIDE (CCl4) INJECTED RATS

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    Objective: To evaluate the role of some inflammatory cytokines in hepatic injury induced by carbon tetrachloride (CCl4). Also, the effects of honey bee and propolis extract to modulate the role of these cytokines.Methods: Fifty female Wister rats were divided into five groups, 10 per each group. After 6 w of all treatments, rats were sacrificed, whole blood and serum were collected to determine the number of white blood cells (WBCs), percentage of granulocytes, percentage of lymphocytes and the level of some cytokines such as gamma interferon(INF-γ), tumor necrosis factor(TNF-α) and interleukin-2(IL-2).Results: CCl4 administration resulted in significant increase in the number of WBCs and percentage of granulocytes (P<0.05 and P<0.01 respectively). After treatment with honey and propolis, the number of WBCs was decreased significantly in the case of propolis treatment (P<0.05) compared with CCl4 group. The levels of TNF-α and INF-γ cytokines were significantly decreased (P<0.05) after treatment with honey or propolis compared with CCl4 group. However, there is no significant change in the level of IL-2 after treatment of CCl4 administered rats with honey or propolis.Conclusion: The present study suggested that honey and propolis can improve the immune disorders induced by CCl4 in rats by modulating the levels of inflammatory cytokines, TNF-α, and IFN-γ.Â

    Startups and Human Capital Management in Egypt: In Search of Decent Jobs

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    While startups are considered an important potential contributor to Egypt’s economic growth, they encounter myriad challenges that hinder their ability to reach their potential, sustain their market presence, and their capacity to provide decent job opportunities. Challenges include the difficulty of locating and sustaining funding, the complicated legal and regulatory framework that governs them, the conservative social norms and culture, and the lack of data and information regarding market dynamics and existing opportunities. The research findings revealed that many startups face challenges with their Human Capital Management (HCM), in the planning, acquisition, development, or sanction functions. This policy paper examines Egypt’s current startup ecosystem, focusing on human capital management. The main research question is: what is needed for startups in Egypt to thrive, and more importantly, what can be done to help them provide more decent jobs? The paper adopts the “Decent work” framework presented by the ILO which defines a decent job as one that is of acceptable quality in terms of ensuring productivity, social protection, rights, and dialogue

    Numerical Investigations of parabolic trough collectors using different nanofluids

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    This paper presents three dimensional numericalsimulations of parabolic trough collectors (PTC) based on twolow-Reynolds eddy viscosity turbulence models, namely;Launder and Sharma k-epsilon and k-omega SST models. Forthe simulations, water was used as the Heat Transfer Fluid(HTF) with four different nanoparticles; Al2O3, TiO2, CuO andCu. Different volume fractions () of the nanoparticles wereinvestigated for various Reynolds (Re) numbers with uniformheat flux. Results showed that the overall performance of thesystem is more sensitive to changes in the thermal properties ofnanofluid than the thermal properties of the HTF. At a volumefraction of 6% and a Re number of 70,000, the Nusselt number(Nu) enhancement of nanofluids TiO2-water, Al2O3-water, CuOwater and Cu-water were found to be 21.5%, 20.2%, 18.11%and 15.7% respectively while the performance evaluationcriteria (PEC) were 1.214, 1.2, 1.18 and 1.155 respectively

    Clinical Utility of Melatonin in Fibromyalgia Diagnosis

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           Fibromyalgia syndrome (FMS) is a chronic disease with an unknown etiology, which is characterized by reduced pain threshold (hyperallgesia) & pain with normally innocuous stimuli (allodynia).This diffuse pain is often disease associated  with wide range of  other symptoms including fatigue, sleep disturbance, stiffness& more.FMS often occur concomitantly  with other rheumatologic disease such as rheumatoid arthritis(RA), systemic lupus erthymatosus(SLE).       The pineal hormone melatonin (MT) exerts a variety of effects on the immune system. MT activates immune cells and enhances inflammatory cytokine and nitric oxide production.Methods: We were studied 75 subjects, 55 of subjects were FMS patients defined by the American Colleague of Rheumatology (ACR 2010) criteria. Patients' mean age was 32.5 ± 13.9 years. They were classified into two groups: Group I of 25  primary FMS patients . Group II of 30 secondary FMS patients with other rheumatologic disease such as RA, SLE. Twenty age and sex matched healthy individuals were included in the study as a control group.Results:Mean Melatonin titers were significantly reduced (p<0.0001) in primary FMs patients compared to the controls (21.32vs. 30.9 pg/ml), but they were significantly elevated (p<0.0001) in secondary FMS compared to controls (138.1vs.30.9 pg/ml). Our data imposed that, in 1ry FMS there were negative correlations of MT titers with tender points (r=-0.848**,p<0.0001), sleep disturbance(r=-0.963**, p< 0.0001**), Fatigue (r= -0.972**, p<0.001**), WPI (r= -0,953 **, p<0.0001) and SS (r=-0.901**, p< 0.0001). Conclusions:In primary FMS patients melatonin level is lower than melatonin level in control, but MT level is high in secondary FMS patients. There was a negative correlation between MT with tender points, sleep disturbance, fatigue, SS & WPI. But there was a positive correlation between MT & cognitive symptoms

    A Comparison between Natural Pozzolana and Fly Ash Replacements on the Mechanical Properties of Concrete

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    This study investigates the effect of Natural Pozzolana (NP) and Fly Ash (FA) substitutes on concrete's mechanical and microstructural properties. Mixes containing 10 - 50 % cement substitute ratios were prepared and tested for flexure and compressive strength after 28 days of curing. Then, qualitative microstructural analysis was performed using Scanning Electron Microscope (SEM). In terms of compressive strength, the mixes containing only 10 % replacement ratios of both NP and FA showed an improvement of 10 % compared to the plain control mix. On the other hand, all mixes containing FA could attain at least a 25 % development in their flexural strength compared to the control mix. The microstructural analysis illustrated that adding FA and NP enhances cement hydration by improving the formation of dense hydration products such as calcium silicate hydrate (C-S-H) and calcium hydroxide (C-H), which are mainly responsible for the performance of the improved mechanical properties of concrete
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