Mobile sensor networks rely heavily on inter-sensor connectivity for collection of data. Nodes in these networks monitor different regions of an area of interest and collectively present a global overview of some monitored activities or phenomena. A failure of a sensor leads to loss of connectivity and may cause partitioning of the network into disjoint segments. A number of approaches have be...

mobile sensor networks rely heavily on inter-sensor connectivity for collection of data. nodes in these networks monitor different regions of an area of interest and collectively present a global overview of some monitored activities or phenomena. a failure of a sensor leads to loss of connectivity and may cause partitioning of the network into disjoint segments. a number of approaches have bee...

MEMS components by their very nature have different and unique failure mechanisms than their macroscopic counterparts. This paper discusses failure mechanisms observed in various MEMS components and technologies. MEMS devices fabricated using bulk and surface micromachining process technologies are emphasized.

Long life has been billed as a key advantage of LEDs, but understanding and communicating how LED products fail and how long they last can be challenging. While LED-based products hold the potential to achieve lifetimes that meet or exceed their traditional counterparts, manufacturer claims can be misconstrued by users who do not fully understand LED product failure mechanisms or the difference...

A new novel test method, associated analysis, and experimental procedures are developed to investigate the toughness of the facesheet-to-core interface of a sandwich material at cryogenic temperatures. The test method is designed to simulate the failure mode associated with facesheet debonding from high levels of gas pressure in the sandwich core. The effects of specimen orientation are conside...

Though rarely encountered in women of childbearing age, untreated pernicious anemia has been found to be a cause of infertility. Once treated, conception often occurs within months. The case presented here is a woman who had a restoration of fertility after initiation of vitamin B12 treatment for vitiligo-associated pernicious anemia. Previous reports have shown the occurrence of pregnancy in t...

Animal bites posses a great challenge for the surgeon to restore back what is normal. These attacks occur to be sudden and cause a life threatening injuries. They even cause facial disfigurement with distressing physical and psychological consequences. This manuscript reports a case of 65 year old man who was mauled by bear and also illustrates about the myths and management of head injury by b...

Scafring following wounding is a major medical problem. In skin wounds or bums scarring often leads to adverse cosmesis and consequent psychological problems, adverse function particularly over joints and retardation of growth especially in children. Scarring in muscle adversely affects movement and can cause ankylosis. In abdominal and pelvic organs scarring can lead to life threatening strict...

Hemorrhage remains a leading cause of pregnancy-related morbidity and mortality. A rapid collaborative approach to management of the woman experiencing excessive blood loss is required to optimize outcomes. Successful treatment of the hemorrhaging pregnant woman is dependent on early recognition of bleeding and clinical manifestations of shock, treatment of the underlying cause of the hemorrhag...