Calculation of the nuclear properties of Erbium 98 166 68Er nucleus by using IBM-1 and VMI model

The aim of the present work is to study some nuclear features of Erbium ( 98 166 68 Er ) such as energy levels E(J), energy transition Eγ, band crossing, and back bending phenomena in the mass region(A=166,and total number of bosons N=15)of the dynamical symmetry SU(3)-O(6) using interacting boson model version-1(IBM-1) and a variable moment of inertia model(VMI) In this study, we determined the most appropriate Hamiltonian that is needed for the present calculations of deformed understudy nucleus; these calculations have been estimated by best-fitting to the measured energies level. The IBM-1 results have been compared with the previous experimental and theoretical (VMImodel) data and it was observed that they are agreed in the most of the states. The predictions from the VMI model are more accurate than those of the IBM-

Use of social networking in the Middle East: student perspectives in higher education

This study aims to determine the benefits, risks, awareness, cultural factors, and sustainability, allied to social networking (SN) use in the higher education (HE) sector in Middle Eastern countries, namely Jordan, Saudi Arabia, and Turkey. Using an online survey, 1180 complete responses were collected and analyzed using the statistical confirmatory factor analysis method. The use of SN in the Middle Eastern HE sector has the capacity to promote and motivate students to acquire professional and personal skills for their studies and future workplace; however, the use of SN by tertiary students is also associated with several risks: isolation, depression, privacy, and security. Furthermore, culture is influenced by using SN use, since some countries shifted from one dimension to another based on Hofstede's cultural framework. The study new findings are based on a sample at a specific point in time within a culture. The study findings encourage academics to include SN in unit activities and assessments to reap the benefits of SN, while taking steps to mitigate any risks that SN poses to students. Although other studies in the Middle East examined the use of Learning Management System and Facebook in, HE as a means of engaging students in discussions and communications, however, this study contributes a better understanding of the benefits and risks, awareness, culture, and sustainability, associated with the use of SN in the HE sector in the Middle East. Finally, the paper concludes with an acknowledgment of the study limitations and suggestions for future research

Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

Abstract Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

Effect temperature on the isolators properties electerical to sampeles unsaturated polyster.

The effects of annealing at temperatures (80Ċ,50Ċ,30Ċ) on the pure unsaturated polyester . Have been studied though the electric properties: impedance, dielectric constant, loss factor and a|.c . conductivity .the effects of annealing caused decreasing in impedance and increasing in dielectric constant loss factor as well as in a c conductivity these changes can be attributed due to the crosslinking to the molecular structure of the polymer

STUDY OF THE OPTICAL PROPERTIES OF THIN FILMS.

Thin film of tin sulfide (SnS) is deposited on to glass substrates using chemical spry pyorlysis thin films. The solution prepared by 0.2 M and used temperature at 350 and the distance between the nozzle and glasses substrate 35cm . obtained The optical constant such as (refractive index n and Extinction coefficient κ) of the deposition films were obtained from the analysis of the experimental recorded transmittance spectral data. The optical band gap of SnS films calculate from . photon energy curve. The energy gap was found to be in the range 1.4eV to 1.85 eV

Study of Effect Add of Nanoparticals Zirconiam Oxide with Yttrium (ZrO2Y2O3) and Zirconiam Oxide (ZrO2) on the Mechanical Properties of Unsaturated Polyester

Nano composite polymeric - based polymers of thermosets material consisting of two groups of Nano composite polymeric, first: is unsaturated polyester resin (UP) which being considered the base material that supported with Zirconium oxide with Nano yttrium ( ZrO2Y2O3), that has granular size (83.98nm), and other group consist of unsaturated polyester resin (UP) that supported with Nano Zirconium oxide (ZrO2 ) that has granular size (47.23nm), where the study include impact of selected volume fraction with (0.5% , 1% , 1.5% , 2% , 2.5% , 3%) all separately and for every material support, Also through this study number of mechanical tests have been carried out and these includes (Tensile, Compression Strength, Hardness) which all tests were conducted at room temperature by Hand Lay-up method. The results show that (tensile strength coefficient, Compression Strength, hardness), where it increase with the increase of volume fraction of nanoparticle for both polymeric Nano composites material, while (tensile strength ) decreased with increasing of volume fraction of nanoparticle for both polymeric Nano composites material too. The polymer mixture of polyester basis which supported with Zirconium only shows that it has higher mechanical and physical properties than the polymer mixture supported by Zirconium particles with Nano yttrium