Ventilatory lung function in workers in the tobacco industry

U cilju odgovora na pitanje u kojoj su meri profesionalne nokse registrovane u duvanskoj industriji mogle uticati na stanje ventilacije pluća eksponiranih radnika sprovedena su ispitivanja u radnoj sredini i na radnicima. U radnoj sredini je izvršena analiza tehnološkog procesa rada, rezultata mikroklimatskih merenja, hemijskih štetnosti i zaprašenosti. Ispitivanje ventilacije pluća sprovedeno je na 95 radnika eksponirane grupe i 129 radnika kontrolne grupe. Rezultati analize radne sredine ukazuju na prisustvo duvanske prašine iznad maksimalno dopuštenih koncentracija. lspitivanja ventilacije pluća eksponiranih radnika su pokazala statistički značajno sniženje vrednosti nekih primenjenih testova kod nepušača ove grupe u odnosu na nepušače kontrolne grupe, što objašnjavamo delovanjem navedenih noksi na radnom mestu.A study was carried out to determine respiratory hazards to workers in tobacco manufacture. The investigations at the workplace included analysis of the work technology and measurements of chemical pollutants and dust concentrations in the work rooms. Ventilatory lung function tests were performed in 95 workers exposed to tobacco dust and in 129 control workers. Results of workplace analysis showed the presence of tobacco dust levels exceeding the maximum permissible concentrations. The values of some lung function tests for exposed workers non-smokers were significantly lower than for control workers non-smokers. They could be attributed to the effect of occupational noxae on the respiratory system

Occupational exposure in a metal industry and ventilatory lung function

U cilju odgovora na pitanje u kojoj su meri profesionalne nokse registrovane u metaloprerađivačkoj industriji (MIN) mogle uticati na stanje ventilacije pluća eksponiranih radnika sprovedena su ispitivanja u radnoj sredini 1 na radnicima. U radnoj sredini je izvršena analiza tehnološkog procesa rada, rezultata mikroklimatskih merenja, hemijskih štetnosti i zaprašenosti. Ispitivanje ventilacije pluća sprovedeno je na radnicima eksponirane grupe (129) i radnika kontrolne grupe (129). Rezultati analize radne sredine ukazuju na prisustvo sledečih respiratornih noksi iznad MDK: mineralne prašina (SiO2 do 10%) aerosoli i boje, toluol i vajšpirit, Osim ovih noksi nađene su i druge kao što su: aceton, CO, C02, nafta, S02, FeO i ZnO, ali su njihove vrednosti ispod dozvoljenih koncentracija. Ispitivanja ventilacije pluća eksponiranih radnika su pokazala statistički značajno sniženje vrednosti ispitivanih testova kod ove grupe u odnosu na kontrolnu grupu, što objašnjavamo delovanjem navedenih noksi na radnom mestu.A study was carried in a metal processing industry with the aim to analyse the relationship between occupational exposure and lung functions. Measurements in the working environment showed the presence of the following respiratory noxae exceeding MAC values: mineral dust (Si02 up to 10%), aerosols, dyes, toluol and white-spirit. The concentrations of acetone, CO, CO2, oil, SO2, FeO and ZnO, which were also determined, did not exceed permissibile concentrations. Lung function tests were performed in two groups of workers- 129 exposed and 129 control ones. The test values were significantly lower in the exposed group of workers than in controls. This is explained by the effect of the occupational noxae present

Some characteristics of the state of lung ventilation in workers from the electronics industry

U cilju utvrđivanja uticaja profesionalnih respiratornih noksi na stanje bronhopulmonalnog sistema izvršena su ispitivanja u radnoj sredini i na radnicima Elektronske industrije na radnom mestu pored kalajnog kupatila i na lemljenju provodnika. U radnoj sredini nađene su sledeće hemijske nokse: olovo, kalaj, kalafonijum i etil-alkohol čije su koncentracije bile u granicama dozvoljenih. Upoređivanjem stanja ventilacije pluća 120 radnika Elektronske industrije i 129 radnika kontrolne grupe nađeno je značajno uvećanje celokupnog otpora strujanju vazduha u disajnim putevima pri mirnom disanju kod radnika Elektronske industrije pri čemu su opstruktivne promene mahom lokalizovane u malim disajnim putevima.To establish the effects of occupational respiratory noxae on the state of the bronchopulmonary system a study of the working environment and examinations of workers from the electronics industry whose workplaces were near tin baths and in conductor soldering shops were carried out. The following chemical noxae were found to be present in the working environment: lead, tin, calophonium and ethyl alcohol, all in permitted concentrations. Comparison of the state of lung ventilation in workers from the electronics industry (n = 120) and control workers (n = 129) pointed to a major increase in total air flow resistance during calm breathing in the exposed workers. The obstructive changes were mainly localized in the small airways

Some characteristics of the state of lung ventilation in workers from the electronics industry

U cilju utvrđivanja uticaja profesionalnih respiratornih noksi na stanje bronhopulmonalnog sistema izvršena su ispitivanja u radnoj sredini i na radnicima Elektronske industrije na radnom mestu pored kalajnog kupatila i na lemljenju provodnika. U radnoj sredini nađene su sledeće hemijske nokse: olovo, kalaj, kalafonijum i etil-alkohol čije su koncentracije bile u granicama dozvoljenih. Upoređivanjem stanja ventilacije pluća 120 radnika Elektronske industrije i 129 radnika kontrolne grupe nađeno je značajno uvećanje celokupnog otpora strujanju vazduha u disajnim putevima pri mirnom disanju kod radnika Elektronske industrije pri čemu su opstruktivne promene mahom lokalizovane u malim disajnim putevima.To establish the effects of occupational respiratory noxae on the state of the bronchopulmonary system a study of the working environment and examinations of workers from the electronics industry whose workplaces were near tin baths and in conductor soldering shops were carried out. The following chemical noxae were found to be present in the working environment: lead, tin, calophonium and ethyl alcohol, all in permitted concentrations. Comparison of the state of lung ventilation in workers from the electronics industry (n = 120) and control workers (n = 129) pointed to a major increase in total air flow resistance during calm breathing in the exposed workers. The obstructive changes were mainly localized in the small airways

The Factors Influencing Galectin-3 Levels in Acute Coronary Syndrome with Decreased Left Ventricular Function

© 2017 Olivera Andrejić et al., published by De Gruyter Open. The aim of our study was to determine the factors influencing galectin-3 levels in patients with acute coronary syndrome and decreased left ventricular ejection fraction. We collected material from 37 successive patients with acute coronary syndrome and decreased left ventricular ejection fraction, of which 19 patients had atrial fibrillation, and 18 patients who were without atrial fibrillation constituted a control group. Blood samples used for the biochemical measurements were obtained on the third day from acute coronary syndrome. We used Statistical Package for Social Sciences for data analysis. A p-value less than 0.05 was considered to be a measure of statistical significance. Galectin-3 concentration is directly correlated with age and B-type natriuretic peptide level. Also, our results showed an inverse correlation between galectin-3 and total body weight, body mass index, body surface area and creatinine clearance. The following variables were found to be significant predictors of galectin-3 level: decreased left ventricular ejection fraction, total body weight, LDL concentration and body mass index. We identified factors that can predict a decrease in the left ventricular ejection fraction below 45% after acute coronary syndrome: atrial fibrillation increases the risk by almost six times, and urea concentration increases the risk by 1.2 times for each unit. Left ventricular ejection fraction below 45%, TBW, body mass index and LDL level are good predictors of galectin-3 concentration in patients with ACS and decreased left ventricular ejection fraction. Atrial fibrillation could be a predictive marker of decreased left ventricular ejection fraction

Microscale scavenging of pentachlorophenol in water using amine and tripolyphosphate-grafted SBA-15 silica: Batch and modeling studies

Mesoporous silica SBA-15 meets most criteria for selection of water treatment adsorbents such as high specific surface area, large pore-size, chemical inertness, repertory of surface functional groups, good thermal stability, selectivity, regenerability, and low cost of manufacture. However, its use for water treatment is still largely unexplored. SBA-15 and its functionalized derivatives of aminopropyltriethoxysilane (SA) and tripolyphosphate (ST) were synthesized, characterized, and used to investigate pentachlorophenol (PCP) removal from aqueous solutions. Functionalization improved SBA-15 capacity for PCP removal from solution in accordance with the trend SBA-15 < ST < SA. Sorption rate experiments data fit the Lagergren pseudo-second order kinetics model. Intra-particle diffusion indicated that the sorption is controlled by two mechanisms: intra-particle and equilibrium diffusion. Adsorptive pore-filling and electrostatic interactions were implicated in the removal of PCP from solution. Electrostatic interaction led to ≥75% increase in sorption upon functionalization. The equilibrium sorption data of the PCP on these mesoporous materials fits the Freundlich isotherm. Desorption hysteresis was low for the pristine SBA-15, but the functionalized SBA-15 materials showed higher hysteresis. The results imply that functionalized SBA-15 sorbents are promising materials for microscale scavenging of PCP in solution