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Biomedical subjects

B Barta

Publications and source records attributed to B Barta.

7 recordsLinked to original sources
PubMed1996

[Usage modeling test in aerosols formulations].

Authors emphasize the importance of "usage-modelling" test concerning the uniformity of doses in the case of aerosol formulations, containing propellants or supplied with atomising devices. Weight measurement was carried out to identify the uniformity of doses per actuation keeping non-use periods in the case of water-based solutions with different density and suspension containing HFC propellants. It can be concluded that uniformity of doses--applying non-use periods during the testing time--significantly depends on the composition, the density of the formulation and the spraying mechanism of the atomising device.

Aerosols↗
PubMed1992

[Prognostic factors and results after the combined surgical and radiotherapy treatment of ependymomas].

Between 1978 and 1991, 31 patients with primary (n = 28) and recurrent (n = 3) ependymoma received external radiation after initial surgery. There were 26 cases of intracranial and five cases of spinal ependymoma. Histological grading revealed low-grade in 23 and high-grade tumors in eight patients. Craniospinal irradiation was given to 13 of 28 patients, whole cranial radiation with boost to posterior fossa in three and local treatment to twelve patients. Six of 28 patients received chemotherapy. Dose to the primary, tumor localisation, grading and extend of surgery did not significantly impact on survival and relapse-free survival. Age was a marginally significant prognostic factor for survival. In patients with intracranial ependymoma (n = 24) survival and relapse-free survival at five years were 54% and 42%, respectively. Patterns of recurrence showed a local recurrence alone in eight, a CNS-relapse with local recurrence in four and local recurrence with distant metastases in one case. Spinal seeding occurred in two of 13 after craniospinal irradiation and two of twelve patients after local treatment. The main problem in the treatment of ependymoma remains local control, the use of spinal irradiation does not seem to improve treatment results.

Adolescent↗
PubMedDate not supplied

[Population issues in the 21st century].

"The article reports on the International Population Forum organized by the United Nations Population Fund held in Amsterdam from 6 to 9 November 1989. The authors analyse the world population problems within this framework. The population changes and related demands, environmental problems, the development of national population policies, the necessity of improving women's conditions, unemployment, the participation of the population in the realization of population policy tasks as well as the mobilization of the necessary financial sources are discussed. Finally, the article deals with the 'Amsterdam Declaration' adopted by the Forum." (SUMMARY IN ENG AND RUS)

Congresses as Topic↗