Essays on Phlegm

1. A disease of the lungs wherein the patient experiences difficulty in breathing which aggravates over time, is called Chronic Obstructive Pulmonary Disease or COPD. It is associated with other lung diseases such as chronic bronchitis, emphysema, and refractory (irreversible) asthma. The symptoms include coughing (with or without phlegm), frequent respiratory infection, blueness of the lips or fingernail beds (cyanosis), tightness in the chest, shortness of breath, and wheezing. 2. It has been found that cigarette smoking is the main cause of COPD. Exposure to air pollution, chemicals, fumes, dust, secondhand smoking and other harmful substances that irritate the ...

Introduction

Doctors, nurses, and other medical personnel have a series of duties that they must attend to, and one of them is dealing with patients’ medical grievances. Many of these complaints are quite common, ranging from the mundane to life-threatening. However, it is the job of these medical personnel to pay attention to these complaints, as these are the symptoms and underlying causes of the true medical condition of the patient. Knowing what these complaints mean will prove to be useful in a patient’s diagnosis. In some cases, this can mean the difference between life and death because some ...

Fuel Cell Technologies in Passenger Cars

Fuel Cell Technology The last decade is characterized by the rapid development of research activity in the field of fuel cells, thus, creating the conditions for their uptake in electric systems. The basic fuel cells’ operating principle has been known for 150 years. However, a variety of technical and financial problems had kept them on the margins of technological applications (Brandon & Hart, 1999). The basic difference between a fuel cell and batteries is that while batteries store energy, fuel cells directly convert a fuel’s chemical energy into electricity by an electrochemical reaction (i.e. Without requiring combustion or movement ...