List of Articles Open Access Article Abstract Page Full-Text 1 - Numerical Solution and Evaluation of Variation Power and Efficiency of Conventional and moving regenerator of Beta-type Stirling Engine In the case of Adiabatic with Exchangers Ideal Alireza Ahmadpour nader rahbar hadi kargar sharifabad Open Access Article Abstract Page Full-Text 2 - A tank agitator motor and gearbox fault diagnosis using vibration analysis Mohsen Ghiasabadi Farahani Ahmad Azizi Open Access Article Abstract Page Full-Text 3 - The Effect of Nozzle Diameter and Water Pressure On Cutting CK45 Steel Quality in Water Jet Process Unes Anamoradi Mehrdad Ozv Aminian Open Access Article Abstract Page Full-Text 4 - The weight optimization hub gas valve using a special machine removal Parviz Ghazviniyan Open Access Article Abstract Page Full-Text 5 - Selecting preventive maintenance method for flexible pavements علی بابائی Open Access Article Abstract Page Full-Text 6 - Second Renormalization in the Casimir Energy Calculation with Subtraction of Similar Configurations in Curved Space Madad Ali Valuyan Open Access Article Abstract Page Full-Text 7 - A review on exergy analysis in different energy sectors mohamad amin sadeghi Abdollah Khalesi Doost