RESUMEN
Different teaching methods were chosen based on different teaching contents in pharmacological theory teaching.Then teaching contents seem simple,interesting and acceptable.The students were more interested in the subject.The results of investiga- tion showed that teaching quality had improved through using this technology.
RESUMEN
<p><b>OBJECTIVE</b>To study the effect of Ar(+) laser on human vas deferens and to compare the effects of using different radiation levels with varying thickness of tissue and varying levels of injury.</p><p><b>METHODS</b>After initial tests on animals, four human scrotums were opened and treated directly with Ar(+) laser radiation. Then 58 human individual scrotums were treated with radiation by the method of trans-skin puncture. The rate of sperm reduction and elimination was tested.</p><p><b>RESULTS</b>In 60 cases, the sperms were found to be eliminated completely after six months of radiation treatment. In 2 cases the sperms were found not to be eliminated completely due to the insufficient radiation.</p><p><b>CONCLUSION</b>Ar(+) laser is one of the best forms of radiation for coagulation of vas deferens. It can be used to coagulate vas deferens without any complications or sequelae.</p>