Indoor air quality in a metropolitan area metro using fuzzy logic assessment system.

According to past experience, the concentration of air pollutants indoor varies significantly in different environmental conditions. The present study focuses on the investigation of the indoor air quality (IAQ) of the underground trains in Athens, Greece. The investigation was performed in both major lines of the ATTIKO METRO.

The academic environment: the students' perspective.

Dental education is regarded as a complex, demanding and often stressful pedagogical procedure. Undergraduates, while enrolled in programmes of 4-6 years duration, are required to attain a unique and diverse collection of competences. Despite the major differences in educational systems, philosophies, methods and resources available worldwide, dental students' views regarding their education appear to be relatively convergent.

Clinically occult Leydig cell tumor in a cryptorchid man. Report of a case presenting with unilateral gynecomastia and impotence.

Left painful breast enlargement and impotence were the main complaints of a right cryptorchid young man. On ultrasonography a hypoechoic mass was found in the right testis. Postoperatively the increased level of estrogens and the decreased levels of testosterone were normalized 6 months following the orchiectomy, gynecomastia subsided considerably and the impotence improved quite satisfactorily.

Tamoxifen treatment in male infertility. I. Effect on spermatozoa.

Objective: To evaluate the effects of tamoxifen treatment on sperm density, motility, vitality, and morphology.

Design: Placebo-controlled, randomized study.

Setting: Outpatient department.