4,022 research outputs found

    Cracking of Charged Polytropes with Generalized Polytropic Equation of State

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    We discuss the occurrence of cracking in charged anisotropic polytropes with generalized polytropic equation of state through two different assumptions; (i) by carrying out local density perturbations under conformally flat condition (ii) by perturbing anisotropy, polytropic index and charge parameters. For this purpose, we consider two different definitions of polytropes exist in literature. We conclude that under local density perturbations scheme cracking does not appears in both types of polytropes and stable configuration are observed, while with second kind of perturbation cracking appears in both types of polytropes under certain conditions.Comment: 24 pages, 11 figure

    Fate of Electromagnetic Field on the Cracking of PSR J1614-2230 in Quadratic Regime

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    In this paper, we study the cracking of compact object PSR J1614-2230 in quadratic regime with electromagnetic field. For this purpose, we develop a general formalism to determine the cracking of charged compact objects. We apply the local density perturbations to the hydrostatic equilibrium equation as well as all the physical variables involve in the model. We plot the force distribution function against radius of the star with different values of model parameters both with and without charge. It is found that PSR J1614-2230 remains stable (no cracking) corresponding to different values of parameters when charge is zero, while it exhibit cracking (unstable) when charge is introduced. We conclude that stability region increases as amount of charge increases.Comment: 21 pages, 8 figures, version to appear in advances in high energy physic

    Early Delirium Assessment for Hospitalized Older People in Indonesia: a Systematic Review

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    Background: Due to the increasing risk of getting co-morbidity and frailty, older people tend to be prone to hospitalization. Hospitalization in older people brings many adverse effects. Moreover, when these elderly get delirium, the mortality and morbidity will increase. The risk of getting deterioration and worsening condition because of delirium would also increase. In fact, delirium assessment is not a high priority in taking care older people during hospitalization because the focus of care is treating the disease.Delirium screening as an early recognition of delirium in the hospitalized elderly inIndonesia remains unreported and even do not well evaluated. Therefore, delirium as a preventable problem or causing problems remains unrecognized.Purpose: This paper aims to review the current evidence of early assessment of delirium in hospitalized older people.Methods: A systematic review was conducted from four databases yielding to 4 articles which met the inclusion and exclusion criteria.Results: There are four focuses on the result, namely delirium screening tools, patient characteristics, identified early delirium assessment, and outcomes affected by early delirium assessment. Confusion Assessment Method (CAM) was used as the delirium screening tool in the hospital. Establishing the care team involving many disciplines will give a better way to improve the integrated care and collaborative care.Conclusion: Performing CAM integrated into comprehensive geriatric assessment can be the most important thing to be undertaken when looking after the hospitalized elderly

    Study of polytropes with Generalized polytropic Equation of State

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    The aim of this paper is to discuss the theory of Newtonian and relativistic polytropes with generalized polytropic equation of state. For this purpose, we formulated the general framework to discuss the physical properties of polytrops with anisotropic inner fluid distribution under conformally flat condition in the presence of charge. We investigate the stability of these polytrops in the vicinity of generalized polytropic equation through Tolman-mass. It is concluded that one of the derived models is physically acceptable.Comment: 21 pages, 3 figure

    Coxsackie B2 Virus Infection Causing Multiorgan Failure and Cardiogenic Shock in a 42-Year-Old Man

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    Infections from coxsackie B2 viruses often cause viral myocarditis and, only rarely, multisystem organ impairment. We present the unusual case of a 42-year-old man in whom coxsackie B2 virus infection caused multiorgan infection, necessitating distal pancreatectomy, splenectomy, renal dialysis, and venoarterial extracorporeal membrane oxygenation with mechanical ventilation. In addition, the patient had a rapid-eye-movement sleep-related conduction abnormality that caused frequent sinus pauses of longer than 10 s, presumably due to myocarditis from the coxsackievirus infection. He recovered after permanent pacemaker placement and was discharged from the hospital. We discuss our aggressive supportive care and the few other reports of multiorgan impairment from coxsackieviruses

    Aid dependence reconsidered

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    If foreign aid undermines institutional development, aid recipients can exhibit the symptoms of “dependence”-a short-run benefit from aid, but increasing need for aid that is damaging in the long run. We show that this high-aid/weakinstitutions state can be an equilibrium outcome even when donors and recipients fully anticipate the effect of aid on institutional development. However, a lowaid/ strong-institutions outcome is also possible, so that the model encompasses the diverse foreign-aid experiences of countries like the Republic of Korea and Tanzania. When the development community ignores the effect of aid on institutions, the outcome depends strongly on initial conditions. Where institutions are already weak, institutional capacity collapses and foreign aid eventually finances the entire public budget. Where they are initially stronger, the result can be close to the institutionssensitive equilibrium. The results suggest that foreign aid strategies, even for countries with similar per capita incomes, should be differentiated according to their institutional capacity; and that a short-run reduction in aid may increase a country’s chances of graduating from aid.

    Sodium benzoate and potassium sorbate preservatives in food stuffs in Iran

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    A high-performance liquid chromatography method was applied for the determination of the levels of benzoate and sorbate in 400 food samples, including pickled cucumbers, canned tomato pastes, sour cherry jams, soft drinks, fruit juices and dairy products (UF-Feta cheeses, Lighvan cheeses, lactic cheeses, yogurts and doogh). The results showed that 270 (67.5%) of all samples contained benzoate ranging from 11.9 to 288.5 mg kg⁻¹ in lactic cheese and fruit juice, respectively. The levels of sorbate in 98 (24.5%) of the samples were 20.1 to 284.3 mg kg⁻¹ in doogh and fruit juice, respectively. Moreover, benzoate was detected in all dairy products ranging from 11.9 mg kg⁻¹ in lactic cheese to 91.2 mg kg⁻¹ in UF-Feta cheese. A low concentration of benzoate could originate naturally, due to specific biochemical mechanisms during cheese, yogurt and doogh maturation. In conclusion, a minimum level for benzoate in dairy products should be defined in the legislation. © 2015 Taylor & Francis

    Aid dependence reconsidered

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    When foreign aid undermines institutional development aid recipients can exhibit the symptoms of aid"dependence"- benefiting from aid in the short term but damaged by it in the long term. The authors find that one equilibrium outcome can be high aid and weak institutions, even when donors and recipients fully anticipate aid's effects on institutional development, but don't take the drastic steps needed to put the country on the path to independence. Another equilibrium outcome can be low aid and strong institutions. Their model encompasses such diverse experiences as those of Tanzania and the Republic of Korea. When the development community ignores aid's effect on institutions, the outcome depends greatly on initial conditions. Where institutions are initially weak (as in many Sub-Saharan African countries at independence), institutional capacity collapses and foreign aid eventually finances the whole public budget. Where they are initially stronger, the result can be close to the institutions-sensitive equilibrium. The results suggest that, even for countries with similar per capita income, the foreign aid strategy should be designed to suit the country's institutional capacity. In some cases a short-term reduction in aid may increase a country's chances of graduating from aid.Development Economics&Aid Effectiveness,School Health,Gender and Development,Economic Theory&Research,Public Sector Economics&Finance,Poverty Assessment,Development Economics&Aid Effectiveness,Economic Theory&Research,School Health,National Governance
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