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In this research work, we used low temperature growth technique (Slow cooling method) for the growth of nonlinear optical and antimicrobial activity of fully-fledged organic Urea Itaconic acid (UITA) crystal. The model was crystallised with a monoclinic crystal structure in the centrosymmetric space group P21/c. The single crystal X-ray diffraction (SXRD) method was used to determine the crystal characteristics of the compounds. To validate the presence of separate functional groups, a Fourier transform infra-red test is utilised. The crystallinity and phase purity of the entire crystal is confirmed by the X-ray diffraction pattern of the detected Bragg peaks. The optical transmission window and shorter UITA wavelength cut-off were established using UV-Vis-NIR studies. Defects were also analysed by the dielectric loss, dielectric constant and AC conductivity studies. The mechanical stability of growing crystal was required to identify using Vickers microhardness analysis and by the Hays-Kendall approach, the effect of hole size (ISE) and the proportional stability model (PSRM) was adequately explained. Using energy dispersion spectrometry, the presence of urea and itaconic acid was confirmed. The differential thermal analysis (DTA) and thermogravimetric (TG) technique were studied by thermal effects of crystal. Using Z scan method the good third order nonlinear response for different planes (1 0 0), (0 0 1) and (1 1 − 1) of the UITA crystal sample were determined. Potentially threatening microbe's activity utilised to analysis antimicrobial chattels. UITA sample were taken into the solubility and width of the metastable region. The good crystal perfection is showed that the grown crystals using by HRXRD and etching studies. Using on classical nucleation theory, the final nucleation constraints such as phase to phase strain, Gibbs free energy transformation, critical radius, molecular count in the critical nucleus and nucleation rate were calculated for the UITA sample. Second Order NLO behaviour of the grown crystals were confirmed by Kurtz powder procedure. [ABSTRACT FROM AUTHOR]

Lack of safe water prevents 42 percent of the world's population from accessing sanitation. In 2021, the WHO estimated that there would be 784 million people without access to safe drinking water. With a well-planned system, the group aims to cut the number of people in need of drinkable water by half by 2015. These methods improve saltwater, which makes up 97 percent of the world's water. In this regard, a model that simulates the work of groundwater treatment firms using natural resources and renewable energy has been developed. There was a lack of continuous wind energy throughout most of Oman, where this model was put, and the necessity for a reverse osmosis system for constant maintenance because these projects rely on renewable energy everywhere. This article aims to create an autonomous desalination plant powered by solar and wind energy. A simulator model based on renewable energy groundwater purification systems was created for this aim. To treat subterranean water in distant areas of Oman using two renewable technologies to create enough electricity to run the reverse water purification and water purification system at the lowest cost. A turbine mounted vertically with a height of 1.5 meters and a diameter of 1 meter will produce 2304 liters per day and 800000 liters per year. [ABSTRACT FROM AUTHOR]

An abstract of the article "Prosthetic valves: old meets new" is presented.

In most structural failures, deterioration of reinforced concrete structure is due to corrosion of reinforcing bars. Ingress of chloride ions and reaction of carbon dioxide with the cement paste due to poor-quality concrete or inadequate cover are the main causes of corrosion. Corrosion can be reduced by using high-quality concrete and providing proper cover to reinforcement. In addition, corrosion inhibitors are used to protect the reinforcement in order to extend the service life of concrete structures. This research work is focused on determining the effectiveness of corrosion inhibitors under cracked and uncracked sections of U-shaped beam. The U-shaped beam concept was used in this study, which helps to develop the crack width within 0.3 mm as per IS: 456 code provision. The two vertical stubs of the U-shaped beam were stressed in order to generate the cracks at the soffit of the beam. Then, the beams are tested for accelerated corrosion along with the half-cell potential meter calculations for the corrosion potential measurement. [ABSTRACT FROM AUTHOR]

We report a case of intermittent tonic conjugate eye deviation due to nonketotic hyperglycaemia induced focal seizure. [ABSTRACT FROM AUTHOR]

Objectives To assess the impact of introducing a transcatheter aortic valve implantation (TAVI) service on aortic valve surgical activity and outcomes. Design A retrospective analysis of prospectively collected data. Setting University hospital of south Manchester. Patients 815 consecutive patients undergoing isolated aortic valve replacement (AVR) or coronary artery bypass grafting plus AVR from January 2006 to December 2009. Fifty consecutive patients who underwent TAVI from January 2008 to December 2009. Main outcome measures Aortic valve surgical activity in the 2 years before the introduction of a TAVI service and in the 2 years following. Outcomes following conventional aortic valve surgery and TAVI. Results In the 2 years following the introduction of TAVI at this centre, conventional AVR activity has increased by 37% compared with an 8% increase nationally (p<0.001). Compared with the 2 years before TAVI there was no change in the mean logistic EuroSCORE (7.4 vs 7.9 p=0.16) or crude mortality rate (2.9% vs 2.1% p=0.48). Fifty high-risk patients underwent TAVI with a 30-day mortality rate of 0%. The mean logistic EuroSCORE of the TAVI patients was 25.3. Conclusions TAVI is an emerging alternative to AVR in high-risk patients. Since the introduction of a TAVI service at this centre, conventional AVR activity has increased. Despite a trend of increasing mean logistic EuroSCORE indicating that more complex cases are being undertaken, there has been a non-significant reduction in the crude mortality rate. Offering a TAVI service has a positive impact on the volume of conventional AVR surgical activity. [ABSTRACT FROM AUTHOR]