Energy efficient contact less suspension of high-speed rotor shafts in application areas such as power-plants and Flywheel Storage Systems (FESS), can be achieved through Active Magnetic Bearings (AMBs). Inevitably, there exists time delay sensing the displacement actual control force by electromagnets, thus leading to system instability. This paper therefore analyses stability AMBs, with const...

We observe that expert surgeons performing MIS learn to minimize their tool path length and avoid collisions with vital structures. We thus conjecture that an expert surgeon's tool paths can be predicted by minimizing an appropriate energy function. We hypothesize that this reference path will be closer to an expert with greater skill, as measured by an objective measurement instrument such as ...

Functional Endoscopic sinus surgery (FESS), visibility is often affected by intra-nasal bleeding, which can be influenced by various anaesthetics. We conducted a prospective randomized controlled study in 60 ASA I and ASA II patients between 18-60 years of age undergoing functional endoscopic sinus surgery under general anesthesia. Aim: To study and compare hemodynamics, blood loss and operativ...

OBJECTIVES To evaluate the accuracy of endoscopically guided middle meatal aspiration culture by comparing the culture results between middle meatal aspiration using the modified aspiration instrument and direct maxillary antral tap. MATERIAL AND METHOD Sixteen patients with chronic rhinosinusitis underwent functional endoscopic sinus surgery (FESS) were enrolled. Both endoscopically middle m...

BACKGROUND Concha bullosa (CB) is pneumatization of the middle turbinate and one of the most common anatomic variation of the sinonasal region. It is found in about 25% of the population. Middle meatus obstructive syndrome (MMOS) is, usually connected with CB. The main symptoms of this syndrome are headaches, impaired nasal breathing and hyposmia. Headache is the most common symptom and it may ...

BACKGROUND The clinical motivation for the current study was that various instrument tables are located far away from the patient's head, and the only way for the surgeon to access an instrument is via a scrub nurse. Thus, the idea for this study was the development and evaluation of an improved and conveniently positioned instrument table. MATERIAL AND METHODS An improved instrument table (I...