Relaxation of writhe and twist of a bi-helical magnetic field

In the past few years suggestions have emerged that the solar magnetic field might have a bi-helical component with oppositely polarized magnetic fields at large and small scales, and that the shedding of such fields may be crucial for the operation of the dynamo. It is shown that, if a bi-helical field is shed into the solar wind, positive and negative contributions of the magnetic helicity spectrum tend to mix and decay. Even in the absence of turbulence, mixing and decay can occur on a time scale faster than the resistive one provided the two signs of magnetic helicity originate from a single tube. In the presence of turbulence, positively and negatively polarized contributions mix rapidly in such a way that the ratio of magnetic helicity to magnetic energy is largest both at the largest scale and in the dissipation range. In absolute units the small scale excess of helical fields is however negligible.Comment: 6 pages, 9 figures, to be published in Astron. Astrophy

Investigating the Role of Critical Success Factors in Achieving the Success of Agile Projects in the Gaza Strip

Achieving project success is a critical element of project management, and identifying the critical success factors (CSFs) that contribute to it is imperative. Agile project management has gained significant attention due to its flexibility, adaptability, and iterative approach, but achieving project success in agile projects remains a challenge. In order to identify the CSFs that have a significant impact on project outcomes, this study examines the role of CSFs in achieving project success in agile projects. A structured online questionnaire was used to collect data from 109 project managers and team members working on agile projects, which was then analyzed using various statistical methods. According to the study\u27s findings, seven factors significantly influence the success of projects: scope and cost management, leadership, agile analytics techniques, customer involvement, teamwork, planning and scheduling, and effective communication, which account for 71.9% of the total variance explained by the CSFs components. The analysis of Pearson correlation coefficients between CSFs and agile project outcomes indicates a positive correlation between each CSF and the four project outcomes (timeliness, cost, quality, and customer satisfaction). The regression analysis includes two significant predictors: scope and cost management, and planning and scheduling, explaining 67.7% of the variation in project outcomes. The findings provide valuable insights for project managers in the Gaza Strip to enhance project success with agile methods by focusing on CSFs

Exploring the Relationship between Green IT Awareness and Adoption: A Case Study of IT Students in the Gaza Strip

Green computing, also known as GIT, has emerged as a crucial field in response to environmental concerns. This study focuses on assessing the level of GIT awareness and adoption among IT students at Al-Aqsa University in Gaza, as well as examining the relationship between GIT awareness and adoption. Data was collected through an online questionnaire completed by 273 participants. The questionnaire covered various aspects of GIT awareness, including understanding, environmental awareness, and e-waste awareness. The collected data was analyzed using statistical techniques such as principal component analysis, mean, and standard deviation. The results indicated that students possessed a satisfactory level of understanding of GIT concepts and the reasons for its adoption. Furthermore, the findings highlighted the significant impact of GIT awareness factors, including GIT understanding, environmental awareness, and e-waste awareness, on GIT adoption. However, it was observed that students did not consistently adhere to GIT guidelines, particularly in terms of frequent internet access and extended computer usage. Interestingly, no significant relationship was found between GIT adoption and students' academic standing. These findings provide valuable insights into the current state of GIT awareness and adoption among IT students and underscore the need for further efforts to promote sustainable computing practices

Influence of calcium-binding salts on heat stability and fouling of whey protein isolate dispersions

peer-reviewedThe effect of the calcium-binding salts (CBS), trisodium citrate (TSC), tripotassium citrate (TPC) and disodium hydrogen phosphate (DSHP) at concentrations of 1–45 mm on the heat stability and fouling of whey protein isolate (WPI) dispersions (3%, w/v, protein) was investigated. The WPI dispersions were assessed for heat stability in an oil bath at 95 °C for 30 min, viscosity changes during simulated high-temperature short-time (HTST) and fouling behaviour using a lab-scale fouling rig. Adding CBS at levels of 5–30 mm for TSC and TPC and 25–35 mm for DSHP improved thermal stability of WPI dispersions by decreasing the ionic calcium (Ca2+) concentration; however, lower or higher concentrations destabilised the systems on heating. Adding CBS improved heat transfer during thermal processing, and resulted in lower viscosity and fouling. This study demonstrates that adding CBS is an effective means of increasing WPI protein stability during HTST thermal processing

Study On Traditional Medicine-modern Drug Interaction And Its Molecular Mechanism Elucidation In Rat Liver

Traditional medicines have been used for thousands of years in maintaining health as an alternative to or in conjunction with modem medicines. Ubatan tradisional telah digunakan beribu-ribu tahun untuk penjagaan kesihatan sebagai alternatif atau bersama-sama dengan ubat-ubatan moden