A dual-stage, fast and fine robotic manipulator is presented. By adopting merits of both coarse and fine actuator, a desirable system having the capacity of large workspace with high resolution of motion is enabled. We constructed an ultra precision XY manipulator with dual-stage structure where the PZT driven fine stage is mounted on the motor driven XY positioner and applied it to fine tracki...

Foam injection is becoming a standard conditioning agent when tunnelling with an earth-pressure balanced shield, resulting in an increasing interest in this technique. The technique is mostly based on empirical rules and experience. To be able to determine what foam and how may foam has to be injected for different soils, it is necessary to know the mechanical parameters of the foam-water-soil ...

Introduction: The portfolio can be seen as a tool for assessmentof a variety of learning activities that differ in content, usage, andassessment. The portfolio not only meets the learner’s educationalneeds but also the political and public reassurance demand thatthe health professional has achieved the required competency ofthe curriculum that allows him or her to practice safely with orwithout...

Technological progress in tunneling has led to modern and efficient tunneling methods in vast underground spaces even under inappropriate geological conditions. Identification and access to appropriate and sufficient geological hazard data are key elements to successful construction of underground structures. Choice of the method, excavation machine, and prediction of suitable solutions to over...

conclusion this study demonstrated that repeating the tfna procedure in pulmonary lesions improves the diagnostic yield without an increase in the rate of pneumothorax. objectives we aimed to investigate whether repeating ct-guided transthoracic fine needle aspiration (tfna) increases diagnostic yield and complication rate. patients and methods patients underwent tfna and the final diagnoses ac...

background and objectives: we aimed at evaluating the efficacy of fine needle aspiration biopsy (fna) in comparison with histopathology and demonstrating whether cytological study could be a proper diagnostic tool in orbital mass lesions. materials and methods: in a cross sectional study during 36 months, patients referred to our ophthalmologic center affiliated to tehran university of medical ...

conclusions iglm should be considered as one of the differential diagnoses when granulomas are encountered in breast fnac and biopsy. a definitive diagnosis of iglm can be made by identifying its characteristic histomorphology and ruling out other causes for granulomatous inflammation. an exact diagnosis is essential since the treatment for different granulomatous conditions of the breast varie...