[Evaluation of the levels of radiofrequency electromagnetic fields in the territory of the city of Bari in outside and inside environments].

In this study we measured the levels of the high frequency field in the proximity of non-ionizing radiation sources (wireless transmitting stations for mobile telephones and radio and television transmitters) in nine districts of the city of Bari. The measurements were taken both inside and outside closed environments. For the indoor measurements we took into account electromagnetic field generating equipment (VDT, electric domestic appliances, mobile telephones) in working and non-working order and with the windows open and shut respectively.

[Indoor radon pollution in houses in the Apulian Region of Italy and evaluation of the probability of lung cancer in the population].

Background: Radon-222 is a gaseous radioactive chemical which can be transformed into other radioactive chemicals, defined as "products of decay" or "radon's daughter". The modality of radon penetration into the buildings depends on the convection motion created in the ground, which suck it back, so causing the penetration. The principal effect on human health is the increase risk of lung cancer, in proportion to the concentration and the time people spend indoors with exposure to radon.

[Measurement of radon concentrations in schools at 2 communities of Puglia and oncologic risk].

Measurements of radon's concentration have been effected in the schools of two communes of Puglia: Polignano and Valenzano. The average concentration of radon, based on the prospecting effected in the research period (spring/summer 1997), appeared, for both communes, lower than national average (75 Bq/m3). However, these average concentrations is below estimated caused of the limitation of the research period, owing to organization only at the period spring/summer.

[Blood groups of the ABO system and survival rate in gynecologic tumors].

A retrospective analysis of 968 women affected by gynecological tumors was conducted to assess the existence of a difference in survival between patients with different blood groups. Data are presented on 237 cases of endometrial cancer, 92 cases of ovarian cancer and 639 cases of invasive cervix cancer, detailing their ABO blood antigenic phenotypes, the stage of neoplasia and the treatment received. With regard to endometrial cancer, a sensibly better 5-year and 10-year survival is associated with blood group 0 if compared with blood group A.

[Dentinal lesions caused by the use of endodontic posts].

An endodontic treatment has been effected on 36 extracted teeth, using drills; certain endodontic posts presently on the market have been successively inserted inside 18 teeth: Flexipost (Essential Dental System); Parapost Plus (Whaledent); dentatus (Dentatus). The teeth have been sectionized and watched through a photomicroscope to check an eventual presence of dentinal damages.

[Comparative evaluation of the retentive capacity of endodontic posts].

The retentive capacity of certain endodontic posts was assessed in terms of: pin design, pin diameter and cement employed. The following commercially products were examined: Flexipost (Essential Dental Systems), Parapost Plus (Whaledent) and Dentatus (Dentatus) posts; Phosphacap (Vivadent) and Bondalcap (Vivadent) cements.

[Visco-elastic properties of various composites for the front teeth].

The rupture load, elasticity modulus and viscosity coefficient of certain composite currently on sale for the reconstruction of front teeth were calculated experimentally. The products examined were: Prismafil (Caulk), Helioprogress (Vivadent), Heliosit (Vivadent), Silux (3M), Concise (3M), Command Ultrafine (Kerr), P30 (3M). The figures obtained relate to 3 different time periods after the preparation of samples.

[Ionizing radiation and video computer terminals].

VDTs are more frequently being used and, therefore have given rise to the problem of security among operators exposed to possible X-ray emissions. The authors report the results of a dosimetric investigation, carried out through TLD CaF2:Dy on X-ray exposure levels close to video display terminals of a data processing center. After testing the exposure percentage values and the measurements adjusted to one-year basis, the authors report that the value are generally similar to those existing in the environment even though significant values have been found in a few cases.

[Changes in ocular tone, pH, ascorbic acid and lactic acid concentration in the aqueous humor of rabbits treated with aceclidine].

The Authors state the results of their research on the modification of the aqueous humor caused by the instillation of the Clonidina to the concentrations of 0,I25% in a group of ten rabbits. The results of these studies illustrate the variations of pH, the ocular tone, the concentration of lactic and ascorbic acid. In all the rabbits examined Clonidina was instillated in the RE while in the LE distilled water was instillated for the control.

[Changes in ocular tonus, pH and concentration of ascorbic acid and lactic acid in the aqueous humor of rabbits treated with clonidine].

The authors state the results of their research on the modification of the aqueous humor caused by the instillation of the Clonidine in a group of ten rabbits. The results of these studies illustrate the variations of pH, the ocular tone, the concentration of lactic and ascorbic acid. In all the rabbits examined was instillated Clonidine for one hour in RE while in LE distilled water was instilled for the control.

[Changes in ocular tonus, pH and concentration of ascorbic acid and lactic acid in the aqueous humor of rabbits treated with epinephrine].

The authors state the results of their research on the modification of the aqueous humor caused by the instillation of the Epinephrine in a group of ten rabbits. The results of these studies illustrate the variations of pH, the ocular tone, the concentration of lactic and ascorbic acid. In all the rabbits examined Epinephrine was instillated in the RE while in the LE distilled water was instillated for the control.

[Preliminary study of acidification of the pH of the aqueous humor in rats treated with timolol maleate].

The Authors have studied in a homogeneous group of rabbits the variations of intraocular pressure and of aqueous humour pH caused by instillation of timolol maleate at different concentrations. In the animals treated with drug concentration of 0,25% and 0,5% a constant reduction of IOP has been observed in comparison with controls, associated to acidification of aqueous humour: no evidence of this correlation it seems to be at low doses of timolol. Further studies are in course to indicate an eventual action of intermediate substances in the mechanism of IOP depression caused by timolol.