The paper presents a study of refrigerants and some issues relating to their environmental impacts in HVAC&R equipment. They are treated aspects of the environmental pollution through the working fluids of the air-conditioning, refrigeration and heat pump systems, and a new strategy in using refrigerants in accordance with the international legislation is described. Additionally, this study pre...

Variations in blur are present in retinal images of scenes containing objects at multiple depth planes. Here we examine whether neural representations of image blur can be recalibrated as a function of depth. Participants were exposed to textured images whose blur changed with depth in a novel manner. For one group of participants, image blur increased as the images moved closer; for the other ...

Access to novelty might provide an alternative learning history that competes with conditioned drug reward. We tested this suggestion in rats using a place conditioning procedure with cocaine and novelty. In Experiment 1, rats were conditioned with cocaine to prefer one side of an apparatus. In a subsequent phase, cocaine exposure continued; however, on the unpaired side, separate group of rats...

There are situations in the operation of complex machinery which is significant pressure. In need of capturing, interpreting and processing information from instruments, often in seconds. This occurs in the middle where it operates the pilot and the aircraft will be established a set of operations that will culminate with a maneuver, consisting of a substantial and binding set of procedures per...

A study was established concerning a continent colostomy system consisting of a new one-piece disposable plug. Twenty patients participated: 13 men and 7 women, who ranged in age from 35 to 87 years. All patients had an end colostomy located on the left lower quadrant. The colostomy age ranged from 2 months to 7 years. Of the 20 participants, 17 found the new procedure to be safer and more comf...

introduction: allogeneic hematopoietic cell transplantation (hsct) is the only therapeutic modality capable of correcting the hematologic manifestations of fanconi anemia (fa). the development  of well  tolerated,  immunosuppressive  conditioning  regimens  for fa patients  undergoing hsct has proven to be a rather challenging task for hematologists. methods: we analyzed the outcome of 30 fa pa...

objective(s) single injection of naloxone, a selective antagonist of morphine, prior to the drug conditioning testing was used to investigate on morphine dependence. materials and methods conditioning to morphine (2.5-10 mg/kg, s.c.) was established in adult male wistar rats (weighing 200-250 g) using an unbiased procedure. nitric oxide agents were microinjected into the central amygdala prior ...