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[On the evaluation of health factors in high-rise buildings. 2. Bioclimatological consequences resulting from comparative measurements of the air ionisation in a high-rise building located in a heavily contaminated suburban area and at certain altitudes (author's transl)].

According to accepted scientific theories inhaled small ions deliver their charges in the pulmonary alveoli and this leads to local recharges. This process stimulates structures of the central nervous system and the activity of the endocrine is excited, resulting in an enhancement of the general well-being. These possibilities of interpretation regarding a biological ionic effect are supported, with reservations (e.g. effects produced by a change in climate), by positive medical effects during and after a stay in a well-ventilated mountain climate or also in a sea-climate. Owing to their lower mobility the large ions are inhaled as small ions to an increasing extent. The chemical and physical noxa are delivered and deposited in the respiratory tract. They "stick" the epithelia in the trachea and in the bronchi as well as the endothelia in the lung vesicles. The number of the ciliary movements is reduced. Similar effects are known to be caused also by nicotine abuse. This results in a decreased ability of expectoration and a lower intake of oxygen by the alveoli. These facts could furnish an explanation for the increased vulnerability of city dwellers to infections diseases and to catarrh. The changed ionisation of air in urbanised areas (mainly large ions in high concentrations) definitely represents only one of the many risk factors. In addition to the attempt to characterize bioclimatically local weather conditions by means of the non-conventional parameter "air ionisation" our study has also been intended to establish biologically oriented criteria for the living in a high-rise building in a particularly unfavourable location. Under specific microclimatic conditions the uppermost storeys were at times bioclimatically favoured over the lowermost, especially when shallow air inversion is present. In such cases, small ions exclusively were registered in the upper storeys and large ions in the lower floors.

Air Ionization↗

The outcome of school dental screening in two suburban districts of Greater Manchester, UK.

School dental screenings have been carried out in the community dental service for over eighty years but there have been very few evaluations of their outcome. The community dental service is now required to provide treatment only for those who have experienced difficulty in obtaining treatment in the general dental service. A follow up procedure to school dental screenings was designed to ensure that as many children in need of treatment as possible attended a general dental practitioner. The objective of this study was to evaluate the effectiveness of this procedure in persuading school children to attend a general dental practitioner. Data on the outcome of this follow up procedure were collected between May 1990 and March 1991 in Oldham and Tameside and Glossop. Of the 47,776 pupils screened, 10,925 were considered to require treatment. General dental practitioners confirmed subsequent attendance by 2,083 (19 per cent) and attendance at community dental service clinics was confirmed for a further 363 (3 per cent). A further 2,161 (20 per cent) were found to have received treatment at a rescreening held two to three months later. Of those referred for treatment, 4,607 children (42 per cent) had received it within the three months following the screening, the majority having received care in the general dental service.

Child↗

[Medico-social problems of young adolescents in Guediawaye (suburban area of Dakar-Senegal)].

A survey in the district of Guediawaye, towards teenagers from 12 to 16 years old, recruited according to a stratified risky method of sampling in 4 different areas has been carried out in order to evaluate their main medico-social problems. It ended up to the following findings: the majority live in hard socio-economic conditions stamping by promiscuity, a weak family income and a low level of education of the parents. 39.2% have been placed under the guardianship of a relative other than the parents. 98.8% do not find spare time structures in their environment. The usage of tobacco and drug is respectively 14% and 1%; 79.4% of students have hardly access to the school stationery, while the teenagers in job apprenticeship have constraints linked to long hours of work (95%). The morbid affections are too varied, dominated by stomach aches (37.8%) far before traumatics (6%); the most frequent therapeutic is resort traditional or empiric treatment. The authors advocate the setting up of a medico-social center making interfere all persons, implied resources in the undertake of the teenagers.

Adolescent↗