CU, CO AND NI CONTAMINATION INDEX FOR RIVER USING RIVER INSECTS AND RIVER PLANTS

2016 ◽  
Author(s):  
Takuma Kubohara
Keyword(s):  
Contamination Index ◽  
River Plants

A validated novel preoperative index to predict the extent of intraperitoneal contamination in patients with acute abdominal pathology: A cohort study

2019 ◽  
Vol 30 (7-8) ◽  
pp. 221-228
Author(s):  
Shahab Hajibandeh ◽  
Shahin Hajibandeh ◽  
Nicholas Hobbs ◽  
Jigar Shah ◽  
Matthew Harris ◽  
...  
Keyword(s):  
Receiver Operating Characteristic Curve ◽  
Receiver Operating Characteristic ◽  
Operating Characteristic ◽  
Validation Cohort ◽  
Characteristic Curve ◽  
Curve Analysis ◽  
Emergency Laparotomy ◽  
Contamination Index ◽  
Operating Characteristic Curve ◽  
Receiver Operating

Aims To investigate whether an intraperitoneal contamination index (ICI) derived from combined preoperative levels of C-reactive protein, lactate, neutrophils, lymphocytes and albumin could predict the extent of intraperitoneal contamination in patients with acute abdominal pathology. Methods Patients aged over 18 who underwent emergency laparotomy for acute abdominal pathology between January 2014 and October 2018 were randomly divided into primary and validation cohorts. The proposed intraperitoneal contamination index was calculated for each patient in each cohort. Receiver operating characteristic curve analysis was performed to determine discrimination of the index and cut-off values of preoperative intraperitoneal contamination index that could predict the extent of intraperitoneal contamination. Results Overall, 468 patients were included in this study; 234 in the primary cohort and 234 in the validation cohort. The analyses identified intraperitoneal contamination index of 24.77 and 24.32 as cut-off values for purulent contamination in the primary cohort (area under the curve (AUC): 0.73, P < 0.0001; sensitivity: 84%, specificity: 60%) and validation cohort (AUC: 0.83, P < 0.0001; sensitivity: 91%, specificity: 69%), respectively. Receiver operating characteristic curve analysis also identified intraperitoneal contamination index of 33.70 and 33.41 as cut-off values for feculent contamination in the primary cohort (AUC: 0.78, P < 0.0001; sensitivity: 87%, specificity: 64%) and validation cohort (AUC: 0.79, P < 0.0001; sensitivity: 86%, specificity: 73%), respectively. Conclusions As a predictive measure which is derived purely from biomarkers, intraperitoneal contamination index may be accurate enough to predict the extent of intraperitoneal contamination in patients with acute abdominal pathology and to facilitate decision-making together with clinical and radiological findings.

Pond and River Plants.—(II.)

1909 ◽  
Vol 70 (1) ◽  
pp. 15-19
Author(s):  
W. Whitman Bailey
Keyword(s):  
River Plants

Assessment of the metal contamination index in groundwater of the quaternary of the Middle Kert Basin, north‐eastern Morocco

2021 ◽  
Author(s):  
Gueddari Hicham ◽  
Akodad Mustapha ◽  
Baghour Mourad ◽  
Moumen Abdelmajid ◽  
Skalli Ali ◽  
...  
Keyword(s):  
Metal Contamination ◽  
Contamination Index ◽  
North Eastern ◽  
Eastern Morocco

scholarly journals Spatial Mobility of U and Th in a U-enriched Area (Central Portugal)

2020 ◽  
Vol 10 (21) ◽  
pp. 7866
Author(s):  
Margarida Antunes ◽  
António Santos ◽  
Teresa Valente ◽  
Teresa Albuquerque
Keyword(s):  
Toxic Elements ◽  
Mine Drainage ◽  
Stream Sediments ◽  
Potentially Toxic Elements ◽  
Uranium Mine ◽  
Spatial Mobility ◽  
Contamination Index ◽  
Mine Dumps ◽  
Central Portugal ◽  
High Concentrations

Uranium and thorium are toxic in different environments. The exploitation of uranium mines and associated mine drainage leaching towards streams, sediments, and soils cause relevant pollution. The U-mine areas present high concentrations of potentially toxic elements with several consequences to ecosystems and human health. Physicochemical and potentially toxic elements of mine dumps, stream sediments, and soils from the Canto Lagar uranium mine area (Central Portugal) were analyzed. Stream sediments, soils, and mine dumps show a large range in the concentration values of Fe, U, As, Cu, Zn, Pb, and Th, suggesting geological and mine contributions. Most of the selected potential toxic elements from sediments present a low to moderate contamination degree, except for As, W, and U, which vary between high and very high contamination index. The soils must not be used in agricultural or residential activities due to contamination in As and U. This abandoned mine represents an environmental risk due to the spatial mobility and dispersion of potentially toxic elements from the dumps to the sediments and soils, as well as by surface runoff and wind.

scholarly journals Heavy metals in the São Mateus Stream Basin, Peixe River Basin, Paraiba do Sul River Basin, Brazil

2019 ◽  
Vol 14 (3) ◽  
pp. 1 ◽  
Author(s):  
Cézar Henrique Barra Rocha ◽  
Hiago Fernandes Costa ◽  
Leonardo Pimenta Azevedo
Keyword(s):  
Heavy Metals ◽  
Rural Area ◽  
River Basin ◽  
Large Scale ◽  
High Potential ◽  
Industrial Park ◽  
Trophic Chain ◽  
Contamination Index ◽  
Paraíba Do Sul River

Large-scale enterprises with high potential to pollute need to be licensed, properly supervised and monitored during and after their operations to avoid and/or mitigate impacts in their areas of influence. The São Mateus Stream Basin (SMSB), located in rural area of Juiz de Fora (MG), is impacted by several activities, highlighting a deactivated landfill and an industrial park. This study monitored the concentration of heavy metals in the waters of the main tributaries of the SMSB. Strategic points were selected in each sub-basin, before the mouth and meeting of the Bocaina, Salvaterra and São Mateus Streams, measured monthly between January and December 2014 using the Metalyser probe, and applying the Contamination Index (CI). The CI results showed that the enterprises located in this basin, especially the Park Sul and Salvaterra Landfill in the Bocaina and Salvaterra Streams, respectively, are negatively impacting the quality of these waters. Metals such as Hg, Cu, Pb and Zn were the ones that most violated CONAMA Resolution 357/2005, directing management in order to control the sources of these metals, which are cumulative in organisms and damage the whole trophic chain. The inhabitants of this rural area are not served by any water concessionaire and make use of springs and wells below the level of these streams.

River plants of western Europe

1988 ◽  
Vol 43 (4) ◽  
pp. 322-324
Author(s):  
B.D. Wheeler
Keyword(s):  
Western Europe ◽  
River Plants
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