Background and Aim: Considering the important role of molars in masticatory function and in order to prevent rapid residual ridge resorption in the postextraction phase, it is necessary to replace these teeth in an appropriate way as soon as possible. This study was conducted to evaluate the outcome of immediate tapered wide Platform implants instead in molar sockets one year following loading in a private clinic in year 1388- 89.Materials &Methods: This descriptive study was carried on 12 samples of first and second molars of 10 patients with average of 46±4.71 years, which had referred on year 1387. Immediately after extraction, tapered Platform implants were placed. One year following loading, the stability of implants was evaluated by means of periotest. Clinical evaluation was based on: pain, infection and pus drainage. In order to determine crestal bone changes parallel periapical radiographs were taken. Data were analyzed by t- test.Results: None of the samples showed pain, infection, pus drainage or continues radiolucency. The average PTV (Perio Test Value) was -2.81±1.6 with average of -1 to -6 was indicator of no mobility in implants. The average crestal bone change was 0.22±0.01 mm.Conclusion: Installation of tapered wide Platform implants at the time of molar extraction maybe successful with ideal case selection and proper surgical procedure.

Rapid and continuous changes in the surrounding environment are one of the inevitable features of the current world, which overshadows various aspects of human life. It is obvious that the educational system, as one of the most important institutions in the modern world, is not immune from facing these changes; Therefore, it is necessary for educational leaders to identify the changes and transformations of their interactive environment that affect its performance and functions, and to adopt wise measures in relation to formulating appropriate and appropriate approaches to these developments. In this regard, one of the most important developments in recent years is the expansion and penetration of new information and communication technologies into the field of education, research and learning.Digital technologies appear in various forms and capabilities, and the newest form of it in the current period is Metaverse technology. It is predicted that the ability of metaverse will gradually enter into different aspects of human life and provide a new style of life; Therefore, educational managers cannot be indifferent to this new generation of technology and do not acquire the necessary knowledge and knowledge in this field and transfer it to the body of the educational system; Therefore, based on this necessity, the present research tried to find important concepts related to the foundations, necessity, requirements and consequences of education with an analytical-descriptive approach and by using the philosophical research method by using library study. to discuss and examine virtual services in the Platform of Metaverse.

In recent decades, canola has been considered as the most important oilseed. Harvesting is the most major problem of canola cultivation, since canola pods are very sensitive to shocks and vibrations. Large amount of produce will fall on the ground especially when the combine's head is not adjusted properly. When canola harvested with a combine, the losses may reach up to 50%. The yields can be improved by decreasing seed losses during the harvesting operation. The objective of this study was to determine the optimal harvesting conditions of combine Platform to minimize grain losses. In order to achieve this, a laboratory test stand Platform was designed and built in the Department of Mechanics of Agricultural Machinery in Shiraz University. Three factors which are more effective on the losses were assessed to determine the best adjustments. These factors were combine forward speed at three levels; 1.5, 2 and 2.5 km h-1, cutter bar speed at three levels; 800, 1100 and 1400 cycles per minute and the relative linear speed of reel in respect of forward speed also at three levels; 1, 1.3 and 1.5. Desired experiment were accomplished on Talaeie variety at 16% m.c (d.b). The grain losses were measured at each level, with three replicates. By considering the interaction of factors, results showed that the effect of these factors at 5% level was significant, and the minimum loss occurred at 2 km h-1 for forward speed, 1400 cut per minute for cutter bar speed and 1.5 for relative reel speed to forward speed.

Background and aim: According to the frequent tooth loss at molar sites and necessity to replace them, the purpose of this study was to evaluate the short term clinical and radiographic outcomes of fresh molar sockets immediately implanted, with tapered wide Platform implants.Materials and Methods: 10 patients with the mean age of 46 were treated with the immediate implantation of 12 wide diameter and wide Platform implants in the molar sites.Following the atraumatic extraction of molars and preservation of the interradicular septum, implantswere placed. Immediately after the insertion of healing abutment, implant primary stability was tested with the Periotest and the crestal bone level was estimated with the periapical long-cone radiographs.Four months later patients were recalled for final evaluations, the crestal bone loss was measured and the periotest values were judged with the Wilcoxon test.Results: All 12 implants were reported with no pain, infection and continuous radiographic lucency.The average PTV1 and PTV2 reported were -4.9±0.99 and -4.6±1.37 (-2 to -7).The difference between PTVs wasn' t statistically significant (P>0.05).The average crestal bone loss was 0.54±0.96.Conclusion: Successful results were achieved with wide diameter and wide Platform implants with the appropriate case selection and surgical technique.