Run report person_search

Jorge Humberto Nicola: Influence Statistics

Mixtures of C2H2, He and N2 were polymerized in an r.f. discharge. Quantitative optical emission spectroscopy was used to determine relative concentrations of the key species CH and CN in the plasma as a function of the proportions of monomer gases in the feed, and to delineate the behavior of the electron mean energy and number density in the discharge. Transmission IR spectroscopy (IRS) and electron spectroscopy for chemical analysis (ESCA) of films deposited from discharges containing ...

OBJECTIVE: To perform histopathological evaluation in biopsies of palatine tonsils in a group of patients, with symptoms of chronic caseous tonsillitis, treated with an innovative and conservative method, using CO(2) laser.

BACKGROUND DATA: In general, the treatment of chronic caseous tonsillitis with CO(2) laser, as described in the literature, refers to the clinical experience of the authors and, the technique used for criptolysis encourages tissue vaporization, which leads to the ...

OBJECTIVE: The aim of this study was to evaluate the impact of CO(2) laser cryptolysis by coagulation (LCC) treatment in the volatile sulphur compounds (VSC) halitometry in patients with chronic caseous tonsillitis (CCT).

BACKGROUND DATA: Caseum retention and halitosis characterize CCT. Failure of clinical treatment indicated tonsillectomy. Recently, a conservative new treatment, CO(2 )LCC, has been introduced. It is painless and opens the crypt ostium, thus avoiding caseum retention. ...

Introduction: Conventional cryptolysis with CO2 laser has been performed with success and in this case, a considerable volume of tissue is removed without warring about possible reduction of the immunological function of the tonsils. In the present paper we propose an alternative cryptolysis method with CO2 laser for chronic causeous tonsillitis. In this way, the desired effect is obtained by coagulation with laser and not by the volatilization of the tissues. The preservation of tissues ...

OBJECTIVE: The aim of this study was to compare the fluorescence of different areas of the buccal mucosa of dogs.

BACKGROUND DATA: Native fluorescence occurs in many animal and plant tissues following excitation by ultraviolet (UV) light. The fluorescence spectrum characteristic of a given tissue may vary with changes in tissue composition and organization. Hence, this optical phenomenon provides a reliable and minimally invasive diagnostic tool for examining tissues in normal and ...

This paper presents results on Wistar rat Harderian glands photodegradation experimental study under visible light. Tests were conducted on 20 rats and a 632.8nm He–Ne laser light was utilized for gland irradiation. The tissue degradation was evaluated by the microphotograph analysis, which demonstrated progressive disappearance of the acinus architecture and a increase in number of nuclei in the pyknotic form, characteristic for the cell degradation. At the same time, the intensities of ...

OBJECTIVE: The purpose of the present study is to call attention to well-established concepts in optics, which, however, are not necessarily known by medical laser users but may be important for interpretation of some data.

BACKGROUND DATA: In reviewing some aspects of the physical concepts of wavelength, frequency, photon energy, and color, it was possible to establish, beyond doubt, the right conditions to use these terms to classify specific laser radiations. This may help in the ...

During ablation of tissue with laser pulses rapid sublimation of matter occurs and high pressures are exerted within the tissue, resulting in steam. smoke and particles being expelled. In this paper we report the speed of particles ejected from animal tissue exposed to CO2 laser pulses measured directly by laser Doppler velocimetry (LDV). Speeds recorded just above animal skin were in the range of 9 to 18 m s(-1) for laser pulses of 128 to 384 J cm(-2) respectively. Aerodynamic ...