A Rare Nasopharyngeal Foreign Body

Nasopharynx is an exceptionally rare anatomical location for foreign body impaction. We present a rare case of nasopharyngeal foreign body (NFB) in a 7 years old child. The diagnosis was confirmed by nasal endoscopy. Immediate removal of foreign body (FB) in the nasopharynx was performed under general anesthesia. This rare situation is potentially dangerous, since its dislodgment may cause fatal airway obstruction. Therefore, in all cases with missing foreign bodies in the aerodigestive system, nasopharyngeal impaction should be kept in mind and endoscopic examination of the region should be considere

Study of Tribological Behavior of Silicon Carbide Based Aluminum Metal Matrix Composites under Dry and Lubricated Environment

Friction and wear behavior of silicon carbide based aluminum metal matrix composite and aluminum matrix alloy have been studied for sliding speeds of 3.14 m/s and 3.77 m/s and load range from 10 N to 30 N under dry and lubricated environment, respectively. The experiments were performed on pin on disk tribometer (Make: DUCOM). The composite was fabricated by stir casting process and has several challenges like inferior bonds and interfacial reaction products which will deteriorate the mechanical and tribological properties. Therefore, addition of reactive metal like magnesium (Mg) should be done which will lead to reduced solidification shrinkage, lower tendency towards hot tearing, and faster process cycles. Results have revealed that the developed composites have lower coefficient of friction and wear rates when compared with aluminum matrix alloy under dry and lubricated environment. Experimental results show that under dry condition coefficient of friction of both the matrix alloy and the composite decreases with increase in load, whereas it increases with increase in sliding speeds; on the other hand wear rates of both aluminum matrix alloy and the composites increase with increase in load as well as with sliding speeds. FESEM of worn surfaces are also used to understand the wear mechanisms

Knowledge and perception of magnetic resonance imaging safety among patients

Background: MRI knowledge and safety are very important not for only MRI technicians, doctors, professionals but also for patients who are undergoing MRI examination.  The key purpose of this research to evaluate the knowledge and perception of MRI Safety among patients, as accidents can happen due to patient’s insufficient knowledge regarding MRI. Method: The retrospective study was performed around 50 patients at Maharishi Markandeshwar institute of medical sciences and research, Ambala, Haryana. Questionnaire design was used to assess their knowledge and perception. The questionnaire form was filled by an investigator directly discussion with patients and the data was collected and analyzed using Microsoft excel sheet. Result: It was assessed that how much knowledge and what is the perception of MRI study among patients. There were 23 (46%) female and f 27 (54%) male in different age group. In response to question regarding how patients felt before MRI scan, 16% patients felt panic, 10% sensed fear and panic, fear and anxiety were experienced by 6% patients, fear was the emotion that 15 patients (30%) suffered, anxiety as the sole was felt by 7 (14%), for 2 (4%) regret was the sensation and 10 patients (20%) didn’t have any issue. Conclusions: The conclusion of this research depicted that majority of the patients were in dark with relation to the knowledge and perception of MRI. It is crucial to explain to the patients about the contraindications and rules regarding the MRI scan