Cracking of Charged Polytropes with Generalized Polytropic Equation of State

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

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

Study of polytropes with Generalized polytropic Equation of State

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

Sodium benzoate and potassium sorbate preservatives in food stuffs in Iran

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

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

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

Some comments on the divergence of perturbation series in Quantum Eletrodynamics

It has been argued by Dyson that the perturbation series in coupling constant in QED can not be convergent. We find that similiar albeit slightly different arguments lead to the divergence of the series of $1/N_f$ expansion in QED.Comment: Final Version, To appear in Modern Physics Letters

Exploration of pain in children on antiretroviral treatment in a regional hospital in South Africa

Background: Patients with human immunodeficiency virus (HIV) disease on antiretroviral therapy (ART) may experience pain for a variety of reasons, including the effects of the virus itself, associated opportunistic infections and the ART. Studies indicate that pain in adults on ART is frequent, can be severe, and is often undertreated. This study sought to explore the experience, and the prevalence of pain in young children aged 3-13 years on ART.Method: Primary caregivers of children aged 3-13 years on ART attending a paediatric ART clinic at a regional hospital in Durban participated in the study. Convenience sampling was used. The Wong-Baker FACES™ Pain Rating Scale and a questionnaire adapted from Hirshefeld were used to investigate variables such as age, cluster of differentiation 4 (CD4)count, ART regimen, ART duration, and site, prevalence and impact of pain during activities. Data were analysed using a standard statistical programme.Results: Four hundred and twenty primary caregivers were interviewed. Most were mothers caring for their HIV-positive children, and the majority of the children were aged 3-7 years. Most children were on a first-line ART regimen, and half reported pain. Nociceptive pain (visceral or somatic) was the most common type of pain, and pain interfered with the daily activities of a third of the children. There was a significant association between CD4 count and pain (p-value = 0.040). Paracetamol was the most commonly used analgesic.Conclusion: Pain was a common problem, and generally was undertreated with analgesia. A need to improve pain assessment and management in this population group was identified

Determinants of responsibility for health, spiritual health and interpersonal relationship based on theory of planned behavior in high school girl students

Background: Adolescence is a sensitive period of acquiring normal and abnormal habits for all of life. The study investigates determinants of responsibility for health, spiritual health and interpersonal relations and predictive factors based on the theory of planned behavior in high school girl students in Tabriz. Methods: In this Cross-sectional study, 340 students were selected thorough multi-stage sampling. An author-made questionnaire based on standard questionnaires of Health Promotion and Lifestyle II (HPLPII), spiritual health standards (Palutzian & Ellison) and components of the theory of planned behavior (attitudes, subjective norms, perceived behavioral control, and behavioral intention) was used for data collection. The questionnaire was validated in a pilot study. Data were analyzed using SPSS v.15 and descriptive and analytical tests (Chi-square test, Pearson correlation co-efficient and liner regression test in backward method). Results: Students' responsibility for health, spiritual health, interpersonal relationships, and concepts of theory of planned behavior was moderate. We found a significant positive correlation (p<0/001) among all concepts of theory of planned behavior. Attitude and perceived behavioral control predicted 35 of intention of behavioral change (p<0.001). Attitude, subjective norms, and perceived behavioral control predicted 74 of behavioral change in accountability for health (p<0.0001), 56 for behavioral change in spiritual health (p<0.0001) and 63 for behavioral change in interpersonal relationship (p<0.0001). Conclusion: Status of responsibility for health, spiritual health and interpersonal relationships of students was moderate. Hence, behavioral intention and its determinants such as perceived behavioral control should be noted in promoting intervention programs

Three Delay Model sebagai Salah Satu Determinan Kematian Ibu di Kabupaten Cilacap

This study aims to determine the role of the three delay model of maternal mor-tality in the District of Cilacap by considering variable of the check status and the first rescue for childbirth as confounding factor. Research design used survey me-thods of analytic control case study approach. The samples consist at 30 cases and 30 controls. Data was analyzed in univariate, bivariate with chi square test and analysis stratified by Maentel Hanzel test. The results showed that the variables related to maternal mortality in the district of Cilacap namely first delay (p &lt;0.001, OR = 16.43) and the second delay (p = 0.038, OR = 5.09). The variable of prenatal care status and childbirth first helper are not a confounding variable in assessing the relationship between the delay of the first with maternal mortality (Mantel Haens-zel p &lt;0.05). In the second delay, the status of prenatal care and childbirth first helper is a confounding variable (Mantel Haenszel p ≥ 0.05)

Mitigating Carbon Emissions in China: The Role of Clean Energy, Technological Innovation, and Political-Institutional Quality

The global warming phenomena arise from the subject of climate change, which draws intellectuals’ attention toward replacing polluting energy sources with clean energy sources by continued deployment of innovations. Also, global warming problems put large pressure on governments, individuals, and policymakers. Therefore, for reliable energy supply and economic development, the target of achieving a low-carbon and sustainable environment is needed. In this light, we explore the role of clean energy and technological innovation in carbon emission reduction in China from 1995 to 2018. The key outcomes from the fully modified least-squares and robust least-squares indicate an elasticity of −0.065 and −0.075, respectively, for the nexus of renewable energy and CO2 emissions. Similarly, nuclear energy, technology innovation, and political-institutional quality have a negative influence on CO2 emissions. Furthermore, the granger causality demonstrates feedback between renewable energy and CO2 emissions, as well as between technological innovation and CO2 emissions. To achieve a cleaner environment, the implementation of the existing policy pathways is potentially geared toward applying technological innovations to produce renewable energy at lower costs