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The addition of toxic chromium in agrarian soils from mine overburden dump is of serious concern. To combat the toxicity of chromium an experiment was carried out at the Department of Botany, Utkal University, India by taking the chromium rich overburden dump (OBD) from Sukinda chromite mine, India. Different proportions of chromium rich OBD (10%, 20%, 30%, 40%, 50%, 70% and 100% OBD) were supplied to garden soil and plants of legume and non-legume categories (Sesbania sesban L. and Brachiaria mutica L.) were grown for assessment of phytoaccumulation ability of chromium, tolerance index, chlorophyll, protein and proline and the activity of oxidative inhibitors enzymes. After 60 days of experimentation, Cr phytotoxicity on physiological and biochemical parameters were assessed. The outcome of the results showed that the activity of antioxidant enzymes enhanced considerably in roots as compared to shoots with enhancing concentration of chromium. To compare the phytoaccumulation ability, the tolerance index (TI), bio-concentration factor (BCF) and transportation index (Ti) were measured in two different species. The results showed that at 100% OBD the TI, BCF and Ti of S. sesban have 22.30, 0.45 and 71.06 and B. mutica have 20.83, 0.43 and 42.45 respectively. The result showed that S. sesban not only had the highest bioaccumulation capacity of chromium but also have high tolerance index and transportation index as compared to B. mutica. Hence S. sesban can be recommended for phytostabilization programme to alleviate toxic chromium from chromite overburden mining sites. BACKGROUND Prevention and health promotion activities are key to reducing prevalence and halting the progress of many chronic diseases. Standardised patient simulation is a useful option for training nursing students in this area. OBJECTIVE To evaluate skills related to prevention and health promotion activities acquired by third-year nursing students through standardised patient simulation and electronic health records. DESIGN A descriptive, cross-sectional study. SETTINGS A nursing faculty at a public university. PARTICIPANTS The study population consisted of all third-year nursing students in the academic year 2017-2018 (N = 142). METHODS The students attended three seminars on health promotion and prevention activities in adults, involving standardised patient simulation and electronic health record use. Skill acquisition was then evaluated through clinical case simulation in a fourth seminar. RESULTS A total of 137 (96.5%) students participated in the study. The mean score for all cases evaluated was 6.7mulation enhances self-study. Strains of the environmental bacterium Myroides odoratimimus can cause human infections. However, treating M. odoratimimus infections can be difficult because of multidrug resistance in this organism. In this study, we isolated strain M. odoratimimus G13 from pastureland in Tibet, China. PFI-2 ic50 The minimum inhibitory concentration analysis suggested that strain G13 has resistance to multiple antibiotics, with an MIC for tetracycline of 168 mg/L. Whole-genome sequencing and bioinformatic analysis revealed that the genome of G13 was rich in virulence factor-encoding genes and antibiotic resistance genes (ARGs). The mobilizable genomic island MGI1313 was also identified and characterized, and six resistance genes related to four types of antibiotics were annotated in MGI1313. Conjugation assays indicated that MGI1313 could be transferred from G13 to Escherichia coli 25DN by horizontal gene transfer, resulting in multidrug-resistant E. coli conjugants. In conclusion, multidrug-resistant M. odoratimimus G13 and the mobility of MGI1313 raise the risk of difficult-to-treat bacterial infections and should be under close surveillance. V.Biokinetic models estimating cobalt (Co) tissue burden can help assess the potential for systemic effects. Such models, however, have not been used to estimate remote tissue concentrations associated with inhalation exposure to Co-containing dust in general environments, work spaces, or animal toxicity tests. We have therefore updated a Co biokinetic model previously developed for oral dosing to include the inhalation pathway by incorporating the International Commission on Radiological Protection (ICRP) Human Respiratory Tract Model. Further, data from animal studies allowed for characterization of testes Co tissue concentration supplementing previous predictions for the liver, heart and blood. Reasonable agreement (within a factor of two) was found between modeled and measured blood, liver, testes and tissue concentrations when animal doses were modeled using human equivalent concentrations to account for species differences in regional lung deposition. We applied the updated model to occupational inhalation exposure scenarios, and found that upper-bound plausible human systemic body burden associated with Co ingestion is much higher than the burden associated with Co inhalation. Chronic ingestion of Co at a previously proposed oral reference dose (RfD) of 0.03 mg/kg-day resulted in predicted tissue levels of 22-54 μg/L (blood), 0.05-0.1 μg/g (heart), 0.01-0.02 μg/g (testes), and 0.2-0.5 μg/g (liver), which were at least 5-fold more than the systemic burden associated with various Co inhalation occupational exposure limits (OELs) of 0.1 mg/m3 or less (for 8 h/d and 5 d/w). Overall, our analysis indicated that Co-metal or dust induced systemic health effects, including myocardial damage, are unlikely for the inhalation pathway when personal exposures levels are below concentrations associated with local respiratory effects such as pulmonary fibrosis. Non-road construction equipment (NRCE) is an important source of atmospheric pollution in many developing and urbanizing countries such as China. However, NRCE source is frequently ignored and failed to be identified in the processing of the source apportionment for atmospheric pollution due to the little knowledge on its chemical fingerprint. In this study, seven types of NRCE are selected with the objectives of quantifying the emission factors of fine particulate matter (PM2.5) (EFPM) and exploring their potential chemical fingerprints. Our results show that the NRCE EFPM in the working modes are ~2-3 times higher than those in idling modes, suggesting the important role of engine operating conditions in producing primary PM2.5. As expected, carbonaceous aerosol is the dominant specie of PM2.5, with a wide range of 64-95%. And, the ratio of organic carbon to elemental carbon displays a systematical decrease trend with the increase of engine rated powers. The analysis results show that NRCE PM2.5 chemical compositions are highly correlated with the engine rated powers.
Website: https://www.selleckchem.com/products/pfi-2.html
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