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This study aims to assess the relationship between sleep habits and obesity in children.

This is an observational cross-sectional case–control study conducted on 100 children aged 6–12 years, selected randomly from the OPC of the Pediatric Hospital, Ain-Shams University. The subjects were subdivided into two groups: the control group of 50 and the target group of children who are classed overweight or obese. Subjects were excluded where the obesity could be explained owing to an endocrinal and/or any identified disease, those who have a medical or psychiatric illness, and those whose parents refused to give consent. All patients had a full history taken, and each child’s parent fulfilled one questionnaire on sleep behaviors.

This study found that 72% with bedtime resistance compared to only 14% among the control subjects, 68% of children experienced a delay with sleep onset compared to 14% among controls, 68% experienced sleep duration abnormalities compared to 12% in the control group, 60% of children stated they needed their parents while going to sleep, compared to 12% among controls, 64% of cases suffered from walking during the night compared to 12% among controls, 64% of cases had a Parasomnia compared to 12% among controls, 66% of cases snoring loudly compared to 12% among controls, and 66% suffering from Apnea, compared to 6% in the control group, and 50% of cases had daytime sleepiness compared to 14% among controls.

It is hoped that this research will be remedied through the adoption of a child-centered approach inspired by the rights to health and play, and the general principles of the Convention on the Rights of the Child (CRC).

The results showed a strong association between excessive weight and increased risk of sleep problems, which were broadly diffused in the population childhood.

This current study has given us a base for the overwhelming fact that these children are directly affected by obesity. A chronic medical condition has enormous implications on health and can lead to many associated disease processes.

The purpose of this study was to investigate the inhibitive action of some green leaves on Monel 400 alloy in acidic media.

Green leaves of Mespilus japonica, Ricinus communis L and Vitis vinifera were immersed in methanol solutions, separately, and filtrated after 48 h of immersion; the obtained filtrates were examined as corrosion inhibitors of Monel 400 alloy in hydrochloric acid solution (1.0M HCl). The performance of these inhibitors was evaluated using electrochemical impedance spectroscopy and potentiodynamic polarization. The effect of temperature on corrosion behavior of Monel 400 was also studied.

The results obtained showed that all tested inhibitors performed as good corrosion inhibitors. The inhibition process is attributed to the adsorption of the inhibitors on Monel surface. The adsorption behavior was found to follow Langmiur isotherm. The inhibition efficiencies of extracts increased with increasing the concentration of each inhibitor and deceased with increasing the temperature.

Practical implication These inhibitors could have application in industries where hydrochloric solutions were used to remove the surface impurities of Monel 400.

This paper helps to find new corrosion inhibitors that are safe and eco-friendly.

This study aims to get rid of non-degradable polyvinyl chloride (PVC) waste as well as sunflower seed cake (SSC) waste by preparing eco-friendly composites from both in different proportions to reach good mechanical and insulating properties for antimicrobial and antistatic applications.

Eco-friendly composite films based on waste polyvinylchloride (WPVC) and SSC of concentrations (0, 10, 20, 30 and 40 Wt.%) were prepared using solution casting method. Further, the effect of sunflower seed oil (SSO) on the biophysical properties of the prepared composites is also investigated. Fourier transform infrared spectroscopy, X-ray diffraction (XRD), scanning electron microscope, mechanical, thermal, dielectric properties were assessed. Besides, the antimicrobial and biodegradation tests were also studied.

The crystallinity increases by rising SSC concentration as revealed by XRD results. Additionally, the permittivity (ε′) increases by increasing SSC filler and SSO as well. A remarkable increase in dc conductivity was attained after the addition of SSO. While raw WPVC has very low bacterial activity. The composite films are found to be very effective against staphylococcus epidermidis, staphylococcus aureus bacteria and against candida albicans as well. On the other hand, the weight loss of WPVC increases by adding of SSC and SSO, as disclosed by biodegradation studies.

The study aims to reach the optimum method for safe and beneficial disposal of PVC waste as well as SSC for antistatic and antimicrobial application.