A crystal design strategy is described that generates hexagonal-phased NaYF4 :Nd/Yb@NaYF4 :Yb/Tm luminescent nanocrystals with the ability to emit light at 803 nm when illuminated at 745 nm. This is accomplished by taking advantage of the large absorption cross-section of Nd(3+) between 720 and 760 nm plus efficient spatial energy transfer and migration through Nd(3+) →Yb(3+) →Yb(3+) →Tm(3+) . ...

Implant periapical lesions are infectious-inflammatory alterations surrounding an implant apex, and can be caused by a number of situations--including contamination at instrumentation, overheating of bone, and the prior existence of bone pathology. The diagnosis is based on the clinical manifestations and radiological findings, where a radiotransparency can be seen at periapical level. The lesi...

Residents of a developed society enjoy various kinds of new residential, commercial and industrial developments. Many of these developments, however, may get us exposed potentially to hazardous accidents upon applications. Among them, burns and scalds are probably the most commonly encountered incidents [1-3]. For example, electric appliances like sprinklers, kettles, hot pot cookers, steam/dry...

This paper deals with a design of a cost-effective protection circuits for a new developed high-power self-oscillating converter. The proposed solution provides a simple way to protect the converter and converterpowered circuits from the damage caused by possible fault modes of operation. It covers three typical failure events – short circuit at the output, overloading and overheating of the co...

Based on strong research evidence: All infants should be placed in the supine position for every sleep. Tobacco exposure pre- and postnatally should be avoided. Room sharing without bed sharing is recommended. It is recommended that blankets, pillows, and other soft bedding be removed from the infant sleep area. Overheating should be avoided. Breastfeeding should be encouraged for SIDS risk red...

Researchers have found that the metabolisms of organisms appear to scale proportionally to a 3/4 power of their mass. Mathematics in this article suggests that the capacity of isotropic energy distribution scales up by a 4/3 power as size, and therefore the degrees of freedom of its circulatory system, increases. Cellular metabolism must scale inversely by a 3/4 power, likely to prevent the 4/3...

Confidential inquiries into cases of cot death in British Forces Germany were introduced in 1990. The information which has been collected so far suggests that the current attention to the position in which a baby is placed in a cot, the prevention of overheating and the avoidance of cigarette smoke, is not misplaced. Despite the considerable reduction in the cot death rate which has occurred i...

As the power density of modern electronic circuits increases dramatically, systems are prone to overheating. Thermal management has become a prominent issue in system design. This paper explores thermalaware scheduling for sporadic real-time tasks to minimize the peak temperature in a homogeneous multicore system, in which heat might transfer among some cores. By deriving an ideally preferred s...