{"title":"[Prevision of the hazard of acute carbon monoxide poisoning. A nomogram for calculating blood HbCO on the basis of the carbon monoxide concentration in air, the length of exposure and the lung ventilation (author's transl)].","authors":"F Gobbato, C Mangiavacchi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The kinetics of carbon monoxide absorption was studied by the authors. An equation is proposed which enables to define the percentage of blood HbCO on the basis of the CO concentration in the air, the length of exposure, and the lung ventilation. The results proved to be satisfactory and were found to be comparable to the experimental data reported in the literature. A set of nomograms is reported which enables to define the blood HbCO saturation on the basis of the parameters which it depends on, therefore appearing to be very profitable to the physician in order to foresee and then prevent the hazard of acute carbon monoxide poisoning.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"29 5","pages":"129-40"},"PeriodicalIF":0.0,"publicationDate":"1977-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12110665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Styrene: detection and determination in polyester varnishes and in environmental air samples].","authors":"M Scrima, P Salvadori, G Polidori","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"29 4","pages":"106-18"},"PeriodicalIF":0.0,"publicationDate":"1977-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12088605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W Jedrychowski, T Cichocki, E Olszewski, Z Nowicki, K Mruk
{"title":"[Epidemiological study of chronic bronchitis in a population of workers in a fertilizer factory].","authors":"W Jedrychowski, T Cichocki, E Olszewski, Z Nowicki, K Mruk","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The authors investigated the influence of working conditions--with particular reference to dust and fluorite pollution--on the epidemiology of chronic bronchitis in 197 subjects working in a fertilizer producing plant in Krakow (Poland). The investigation included history, respiratory function tests (VC, TVC), height and weight measurement, rhinolaryngologic examination, nasal mucosa cytology and physical examination. The environmental survey included measurements of the dust respirable fraction and fluorite concentration in the air. The prevalence of chronic bronchitis was found to increase with the length of working activity and to be much higher in smokers than in non-smokers. Furthermore, in subjects working at the sites with the worst environmental situations it proved to be twice as high as in the remainders. Likewise higher proved to be the prevalence of laryngitis and sinusitis. The prevalence of chronic bronchitis was found to be much higher in workmen with more marked spirometric changes. In subjects affected with chronic bronchitis alterations of the nasal mucosa epithelium were also found.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"29 4","pages":"97-105"},"PeriodicalIF":0.0,"publicationDate":"1977-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12088606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Chronic bronchitis in a fire-proof material plant].","authors":"P Paggiaro, A M Loi, P Musone, P Mugnaini","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The prevalence of chronic bronchitis has been evaluated in a group of refractory material workers. Diagnosis was made on the basis of symptoms, signs and functional and radiologic evidence of the typical changes of the disease. The relationship with age, length of working activity and cigarette smoking habit were also investigated. It can be concluded that, in the examined people, chronic bronchitis was better attributable to the working exposure to dust, than to the age or smoking habit.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"29 3","pages":"81-95"},"PeriodicalIF":0.0,"publicationDate":"1977-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12088604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[A study of cardiac dynamics during multistage exercise tests performed on a bycicle ergometer (author's transl)].","authors":"F Gobbato, A Fiorito, G Cornelio","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The authors analysed the behaviour of the mechanical systole (electromechanical systole; tension time, left ventricular ejection time), as well as of the diastole (both cardiac and hemodynamic diastole) during exercise tests performed on a bycicle ergometer, with 40, 80, 120 watt workloads. The mechanical systole--as well as its components--duration is influenced, during exercise test, by both heart rate and stroke volume--pulse pressure being assumed as an indirect index of the latter. The study of the correlation between the two above mentioned parameters has a great importance in evaluating the cardiac pump efficiency both in health and disease. The study of the behaviour of diastole is likewise very important, as it provides useful information concerning: a) the length of the cardiac muscle post-exercise recovery phase; b) the coronary available perfusion time; c) the Windkessel (arterial bellows) emptying time. Moreover, the blood pressure fall rate in diastole is an useful indirect measure of the peripheral resistance changes during muscular work. A statistical analysis is made and the correlation coefficients and the regression equations between the various parameters are defined.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"29 3","pages":"65-80"},"PeriodicalIF":0.0,"publicationDate":"1977-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12088603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[A little known source of lead poisoning: rasp and file manufacture (author's transl)].","authors":"G Abbritti, G Losito, C Colangeli, G P Proietti","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Seventy-two subjects employed in rasp manufacturing and, especially, manual \"engraving\" were studied by the authors, mainly in order to find out whether lead poisoning could be induced by their particular working activity. Twelve subjects (16.7%) were found to have standard biological parameters for lead (blood lead, urinary delta-ALA and urinary coproporphyin levels) within normal limits. Twenty-five (34.7%) showed hematochemical and urinary signs of increased lead absorption, and 35 (48.6%) marks of lead poisoning, more or less severe. The manufacturing process was then studied and working places were inspected too. Finally, lead poisoning was found to be due to a small lead block, used by hand-engravers in order to avoid damages to the already engraved surfaces of the rasps. This survey leads therefore to the conclusion that rasp manual engraving has to be included among the working activities which can induce lead poisoning.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"29 2","pages":"33-42"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12050309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Formaldehyde determination in adhesives and in work environment (author's transl)].","authors":"M Scrima, G Polidori","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A simple method is presented for analysis of urea-formaldehyde resins and other substances used in glueing operations, in relation to the environmental control of formaldehyde, considered as a pollutant in furniture plants.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"29 2","pages":"43-7"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11761871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Chronic broncopneumopathy and pneumoconiosis in workers employed in phosphoric acid production (author's transl)].","authors":"L Fabbri, C Mapp, A Rossi, S Cortese, B Saia","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Thirty-five subjects employed in a phosphoric acid producing plant were studied by the authors. The investigation included: history, according to the C.E.C.A. questionnaire for chronic bronchitis and emphysema; physical examination, chest X-ray spirometry and lung diffusing capacity for carbon monoxide by the steady state method (DLCOSS). High prevalence of chronic bronchitis (45.7%), obstructive spirometric impairment (37.1%), and decreased values of DlcoSS (31.4%) were detected. Two subjects were found to be affected with p 1/0 and 7 with p 0/1 pneumoconiosis. Such findings were significantly related to the lenght of working activity as well as to dust and gaseous fluoride (hydrofluoric acid, hexafluorosilicic acid and silicon tetrafluoride) exposure.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"29 2","pages":"50-7"},"PeriodicalIF":0.0,"publicationDate":"1977-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12050310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Health aspects of antibiotic manufacture with particular emphasis on respiratory and genital disturbances (author's transl)].","authors":"F Carnevale, M Valsecchi, D Grazioli","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Sixty-seven workers employed in incapsulating and manufacturing antibiotics were studied by the authors by means of questionnaire, environmental survey, clinical examination and hematochemical, immunologic and microbiological determinations. The main features of respiratory and genital disturbances are discussed. Two cases of occupational asthma due to ampicillin were detected. Twenty-four out of forty-five female workers were found to be affected with vaginitis (due to Candida albicans in fourteen): a relationship with the working environment is hypothesized. The digestive tract disturbances are reported and the prevalence of dental discoloration is stressed. Finally the psycho-pathological pattern of the factory workers is outlined.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"29 1","pages":"1-14"},"PeriodicalIF":0.0,"publicationDate":"1977-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12046162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Prevalence of penumoconiosis in a steel-plant (author's transl)].","authors":"A Rossi, C Gemignani, P Maestrelli","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Chest X-rays of 483 steel workers employed in the same factory were examined by the authors and classified according to the ILO U/C 1971 classification for pneumoconiosis. The prevalence of pneumoconiosis was found to be 8.4%. The majority of the positive cases were detected among the furnace workers and then among presse and rolling-mill workers. Only one positive case was found among the workers of the other foremen. It is stated that the furnace is the main source of pollution and that the lack of protective systems spreads the risk also to the surrounding working sites. No significant differences were found as for the opacity features.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"29 1","pages":"15-23"},"PeriodicalIF":0.0,"publicationDate":"1977-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12055719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}