Dengue virus is a positive sense RNA virus of the flavivirus family with at least four distinct serotypes. It is the cause of dengue fever which is associated with headache, retro-orbital pain, joint and bone pain (hence "breakbone fever"), fever and rash. The most serious form of dengue infection is known as dengue hemorrhagic fever which is characterized by thrombocytopenia and potentially multi-system organ failure. Dengue is a mosquito-borne viral illness that is spreading rapidly to become endemic in tropical and subtropical regions of the world. Infection with one serotype results in long-term immunity only to that specific serotype, and not to the others therefore a person can be infected many times with the virus. Dengue often is difficult to diagnose, and a presumptive diagnosis is established initially based on clinical signs and symptoms, while waiting for laboratory confirmation.

Strabismus is a visual disorder where the eyes are misaligned and point in different directions. This misalignment may be constantly present, or it may come and go. The four rectus muscles move the eyes up, down, to the right, and to the left, and the two oblique muscles have more complex actions, helping the eyes to look down and in (towards the tip of the nose) or up and in (towards the bridge of the nose). There a plethora of causes which disturbs this minute balance and this study intends to throw some light on this topic.

As the number of application in wireless sensor networks are increasing because of ongoing miniaturization of electro-mechanical parts, its subsidiary elements and drastic decrease in the cost. The communication among sensor nodes consumes more energy than the actual computation of information. The consumption not only takes place in transmission state, but also relatively high in idle state. The focus of this paper is to identify the main source of energy dissipation, as well as counter measure to ensure prolonged network lifetime. In addition to these, different types of protocols for routing, medium access control and transport protocols are presented and clarified by the means of examples.

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