Stress and chronic pain have been shown to prevent the development of tolerance to morphine analgesia, which appears to be related to neuroendocrine activity and alternation in neurochemicals. Also the involvement of nitric oxide (NO) has been implicated in tolerance to morphine analgesia. In our pervious study, we showed that co-administration of swim stress (ss) with chronic morphine, prevent...

Previously established necessary and sufficient conditions for finite stationary moments in stable FIFO GI/GI/s queues exist only for the first component of the workload vector, the delay. In this paper, we derive moment results for all the components of the stationary workload vector in stable FIFO GI/GI/s queues. As in the case of stationary delay, the moment conditions for workload component...

When a set of repetitions of swimming, a particular type of exercise in the weight room, or a session on a swim-bench is planned, each block of exercises attempted is a training stimulus. At the completion of the training stimulus experience, the body should have changed in the way the stimulus provoked. In accordance with the Principle of Specificity, specific exercises train specific movement...

OBJECTIVE To evaluate DNA fragmentation in spermatozoa with normal morphological appearance. DESIGN Prospective study. SETTING Academic tertiary center. PATIENT(S) Fertile, subfertile, and infertile men were studied. INTERVENTION(S) Terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate-fluorescein nick-end labeling assay and morphology assessment by phase contrast in ...