[On the mechanism of spleen contraction due to changes in the portal circulation].
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Biomedical subjects
Publications and source records attributed to F Petrelli.
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After closely analyzing the phenomenon regarding the immense increase and diffusion of equipment which generates low- and high-frequency electromagnetic fields, the AA emphasize both the methodological and interpretive difficulties of assessing the effects produced on public health. They maintain the need to exercise caution in determining the tolerable limits of exposure, and in particular long-term ones. Finally, after analyzing the bureaucratic procedure which led to the formulation of Decree No. 381 of 1998, they express the hope that the various Regions will set themselves high-quality objectives when promulgating the necessary legislation, so as to minimize the risk factor.
A low molecular factor showing high specific activity in the control DNA of transcription in vitro was isolated from aqueous ultrafiltered calf pineal gland extracts. The active factor was purified by means of Gel filtration on Sephadex G-25 and G-10, thin layer chromatography on aluminum sheet cellulose and high performance liquid chromatography using a Supelcosil LC 318 reverse phase column. The purified pineal factor was characterized as a peptide of low molecular weight (of about 1200 Dalton) containing glutamic acid, leucine, glycine, threonine and alanine in their approximate molar ratio, referred to glycine taken as 1: glycine 1, threonine 1, leucine 1, alanine 6, glutamic acid 2. Studies of the aminoacid sequence by N-terminal analysis using the automated Edman degradation procedure, were unsuccessful, suggesting the presence of a blocked NH2 group. The purified peptide appears to be different from peptide factors till now isolated from pineal gland.
Recent laws (D.Lgs 339/1999 and 31/2001) have allowed the bottling and sale of spring water and of table water provided they are not defined as "mineral", "natural" or "mineralized", but without characteristics that constitute a danger to human health. Like mineral water spring water mustn't be purified; is bottled as it gushes out from the source and is subject to the same requisites as tap water (DPR 236/1988). Table water is bottled purified water subject to the same requisites as tap water, whatever its original characteristics, during the process of purification, it can be modified to render it ideal for the needs of the consumer.
A research was set up among the residents in the seismic epicentral zone of the earthquake which hit the Marches and Umbria in September 1997, using an appropriately formulated questionnaire to assess the repercussions of the seismic event on the psycho-physical condition of the population. Was also administered the Croq and Steinitz questionnaire for post-traumatic stress. The results obtained show that the state of health was undermined by the aggravation of already existent syndromes. Despite the powerful emotional reaction that the earthquake produced, there was found to be only a medium to light level of trauma. In addition, the survey brings out some problems regarding the life style in the prefabricated huts, both in terms of comfort and of building characteristics.
The Authors examined the knowledge and motivations which lead young people to using alcohol, smoking and psychotropic substances, and the possible risks deriving from such use. 7588 questionnaires were distributed and 4118 duly returned completed (54.2%). 29.9% of the boys admitted that they were either taking or had taken drugs. The majority of substances identified were "new drugs"--ecstasy, special K, poppers, etc.--(79.8%), marijuana (72%) and hashish (49.2%). 42% claimed that these substances couldn't be considered to be drugs or to have the effects of drugs. 7.5% didn't seem able to reply to the questions. Distress, curiosity, need to overdo, search of the pleasure, they probably lead young people to use the drugs.
Anorexia and Bulimia are considered to be among the most frequently manifested psychological problems of today, found mainly in adolescent girls, but ever more frequently in boys. Recent research has been carried out among middle-school students in various Marche towns using a psychometric method (Eat-40, Eating Attitudes Test). The analysis is based on the points highlighted in the response to a questionnaire detailing repetitive behavioral traits that characterize subjects with eating disorders even in their initial stages. From the analysis of the data collected, and bearing in mind the BMI and the different correlation between EAT and BMI, the total number of cases that present anomalies amounts to 24.5% of the individuals who completed the questionnaire.
The article underlines the fundamental importance of the protection and promotion of environmental quality for the human health. The evolution of fluvial monitoring techniques is contemplated from chemical and bacteriological analysis until the Index Functional Index (I.F.F). This evolution it's very important because shows a new methodological and cultural maturation that has carried from a anthropocentric vision until an ecocentric vision. The target of this ecological vision is the re-establishment of ecological functionality of the rivers, eliminating the consumer's vision of the water considered only as a usable resource. The importance of an correct monitoring of a river is confirmed, even though the preventive approach priority remains.
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In view of the fact that a considerable proportion of the population particularly at risk (the aged, children, the sick, etc.) spend many hours of the day indoors, the authors report the results of an investigation carried out on the building characteristics of 1833 houses sampled in four towns in the Marches region. The questionnaire of Fusillo et al. was used. The results show an excellent situation with regard both to the quality of outdoor air and acoustic pollution (only 27% of the sample complained of the vicinity of their house to zones of intense traffic). The low index of overcrowding (0.7 inhabitants per room) as well as the overall surface area of the houses (in 60% more than 100 m2), the large number of bathrooms (almost 50% of the houses with two, and another 15% with three or more), and the prevalence of detached houses are factors that show how the Marchean population pay particular attention to building criteria. However, even though from the structural standpoint the housing situation might seem a very good one, specific problems can be found, also common to other Italian regions, regarding building techniques and the materials adopted (e.g. the use of reinforced concrete, which together with the undoubted advantages it offers also has a number of disadvantages). The authors therefore stress the need for incentivating a bioecologically based building tradition, even if this is economically more costly, and give guidelines on how to conciliate the bioecological and economic aspects with regard to choice and use of materials. Finally, they express the hope that the "EC" symbol foreseen for building materials by Law No. 246 of 21 April 1993 will be adequately used in the ways laid down in appendix A to that law.