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This retrospective study compares the long-term results of the treatment of 135 children with displaced extension-type supracondylar fractures of the humerus using 3 different methods. Closed reduction and percutaneous fixation was superior with excellent and good results in 87% and had the lowest incidence of poor results (8%). Open reduction and wire fixation, and closed reduction with a plaster cast gave excellent and good results in 74% and 60% respectively. Closed reduction and wire fixation is recommended as the treatment for grades II and III supracondylar fractures.

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The renewable energy sector in Jordan is rapidly growing as the government is committed to reducing the country's dependence on fossil fuels and increasing the contribution of renewable energy to its energy mix. However, the effective management of renewable energy projects requires a unique set of skills and expertise that is different from traditional engineering management. The agreement between solar energy yield and electricity demand is compared in terms of daily, monthly and yearly patterns. A special focus is oriented towards the current status of solar energy projects in Jordan area in terms of their sizes, reliability, feasibility and challenges. Finally, concerning the future plans of solar energy in Irbid area, a road map will be introduced to trigger the decision makers to convert Irbid to a green governorate in the next decade and examines the key skills and competencies required for engineering managers to succeed in the renewable energy sector in Jordan, including technical expertise, project management skills, financial and business acumen, and strong communication and leadership skills.