Tracheobronchial foreign body (TFB) aspiration is rare in adults, although incidence rates increases with advancing age. We report a case of foreign body in left main bronchus in an adult female who had no risk factor. She was successfully treated with removal of betel nuts by bronchoscopy. Unusual presentation and high index of suspicion can help in proper management.

Mukoepidermoid karsinom nadir olarak trakeobronşiyal ağaçta yerleşen malign bir tümördür. Mukoepidermoid karsinomlar düşük evreli tümörler olmalarına rağmen, cerrahi olarak çıkarılmaları gerekir. Yirmi yaşında erkek hastada ateş, öksürük ve nefes darlığı yakınmalarına yol açan ve fiberoptik bronkoskopide sol ana bronşu daraltan kitle lezyonu saptandı. Akciğer özek dokusunu korumak için medyan s...

This analysis of thirteen cases of lower airway foreign body aspiration in children reveals a high incidence of aspiration into the left main bronchus, and an increased incidence in older children. Early indentification of nonradio opaque foreign bodies such as food and plastic toys is difficult in the absence of a positive history. Suggestions are offered for prevention, early detection, and t...

in this paper an optimal controller is proposed for a self-balancing electrical vehicle called segway pt. this vehicle has one platform and two wheels on the sides and the rider stands on the platform. a handlebar, as a navigator, is attached to the body of segway, with which the rider controls the vehicle. since segway uses electrical energy produced by batteries, resource consumption manageme...

this paper deals with the design and evaluation of a robust controller for static var compensator (svc) in remote industrial power systems to enhance the voltage profile for three-phase single cage induction motor (scim) loads. the controller design is based on h∞ theory to deal with uncertainties arising in industrial network modelling. the performance of the h∞ controller has been evaluated e...

in the face of limited water resources, better utilization and operation of irrigation networks is essential. use of control systems is considered as one of the most assured ways to achieve the aim. in the course of the present study, two centralized controllers are applied to the west canal of aghili irrigation district in i. r. iran. the proposed control algorithms consist of a distant downst...

continuous stirred tank reactor (cstr) has particular importance in chemical industry. cstr has usually a nonlinear behavior which makes it difficult to control. the reactor has two parameters: the concentration and temperature of mixture both of which are uncertain. this case of cstr has large disturbance in domain. in order for disturbance rejection, a controller has to be designed. in this p...

f communication between pilots and controllers is one of the fundamental principles of air traffic control Consequently, air-ground communications will both reflect the taskload imposed on the controller as well as e workload experienced by the controller. Therefore, analysis of ATC communications could potentially very rich and detailed picture of the demands placed on a controller in a given ...

Heat exchanger system is widely used in chemical plants because it can sustain wide range of temperature and pressure. The main purpose of a heat exchanger system is to transfer heat from a hot fluid to a cooler fluid, so temperature control of outlet fluid is of prime importance. To control the temperature of outlet fluid of the heat exchanger system a conventional PID controller can be used. ...

This paper provides a brief overview of current smartgrid and microgrid technologies and issues associated with their implementation. An architecture of the microgrid for the Department of Electrical Drives and Power Electronics is proposed. Main attention is paid to the control system. The paper sets out the functions and requirements to the main controller for a microgrid control system. The ...