96/01182 Geological and ecological study of the North Bohemian brown coal basin

1996 ◽  
Vol 37 (2) ◽  
pp. 82
Keyword(s):  
Brown Coal ◽  
Ecological Study ◽  
Coal Basin ◽  
The North

scholarly journals Findings from the application of coal combustion by-products (CCB) for forest reclamation on spoil banks of the North Bohemian Brown Coal Basin

2009 ◽  
Vol 55 (No. 3) ◽  
pp. 137-144
Author(s):  
P. Čermák ◽  
V. Ondráček
Keyword(s):  
Brown Coal ◽  
Coal Combustion ◽  
Thermal Power ◽  
Soil Horizon ◽  
Carbonate Content ◽  
Acer Pseudoplatanus ◽  
Coal Basin ◽  
Forming Process ◽  
The North ◽  
By Products

Coal combustion by-products (stabilizate, FDG gypsum) generated by the thermal power station in Ledvice were tested on an above-level dump of the Bílina Mine in the North Bohemian Brown Coal Basin during the reclamation of its surface for forestry purposes. A part of the experimental object was treated with coal combustion by-products at a dose of 700–1,000 t/ha that were incorporated into the soil profile by very deep ploughing and the other part was left untreated for comparison. A one-year preparatory agrocycle was conducted on the entire experimental object – growing of <I>Leucosinapis alba</i> for green manuring and for reforestation bareroot and container-grown planting material was set out into dug holes [<I>Larix deciduas</I> L., <I>Pinus nigra</I> Arn., <I>Pinus sylvestris</I> L., <I> Quercus robur</I> L., <I>Carpinus betulus</I> L., <I>Acer pseudoplatanus</I> L., <I>Acer platanoides</I> L., <I>Alnus glutinosa</I> (L.) Gaertn., <I>Fraxinus excelsior</I> L., <I>Tilia cordata</I> Mill., <I>Betula verrucosa</I> Ehrh.]. The assessment of the experimental object at the age of 7 years indicated that as a result of the application of stabilizate and FDG gypsum there was an increase in porosity, water-retaining capacity, soil alkalinity and carbonate content; the soil-forming process was characterized by a decrease in soil alkalinity whereas the high alkalinity of the soil horizon treated with this amendment did not negatively influence the growth vitality of most tree species taxa used for reforestation.

scholarly journals The rise of the mine water level in the area of the former Kohinoor II mine and the influence on the surrounding aquifer systems of abandoned mines in the central part of the North Bohemian Brown Coal Basin

2011 ◽  
Vol 59 (3) ◽  
pp. 135-142
Author(s):  
Milan Mikoláš ◽  
Jiří Varady ◽  
Jaroslav Bažant ◽  
František Žoček
Keyword(s):  
Coal Seam ◽  
Water Level ◽  
Brown Coal ◽  
Mine Water ◽  
Abandoned Mines ◽  
Coal Basin ◽  
The North ◽  
Water Pumping ◽  
Aquifer Systems ◽  
Water Rise

The aim of this article is to evaluate the process of terminating the mine water pumping after the liquidation of the Kohinoor II coal mine, situated in the central part of the North Bohemian Brown Coal Basin (NBB) and the subsequent resumption of pumping from the surface after the mine water rise in the area of the former mine to the desired level. We analyzed previously known data, particularly the amount of mine water pumped from the mine area and the surrounding abandoned mines in the past. Further the evaluation of known surrounding abandoned mines aquifer systems, accumulated in the coal seam (underground accumulation of water) and the evaluation of the effect of increasing the water level in the Kohinoor II mine, focusing on the enlargement of the central mine aquifers and the evaluation of the effects of changes in the way of pumping on the surrounding coal seam and its mining with continued safe brown coal mining at the nearby Bílina mine, that can be ensured for at least another 25 years.

scholarly journals Spatial clustering of drug-resistant tuberculosis in Hunan province, China: an ecological study

BMJ Open ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. e043685
Author(s):  
Kefyalew Addis Alene ◽  
Zuhui Xu ◽  
Liqiong Bai ◽  
Hengzhong Yi ◽  
Yunhong Tan ◽  
...  
Keyword(s):  
Treatment Outcomes ◽  
Cumulative Incidence ◽  
Ecological Study ◽  
Spatial Clustering ◽  
Hunan Province ◽  
Drug Resistant ◽  
Drug Resistant Tuberculosis ◽  
The North ◽  
Resistant Tuberculosis ◽  
Over Time

ObjectiveThis study aimed to investigate the spatial distribution of drug-resistant tuberculosis (DR-TB) in Hunan province, China.MethodsAn ecological study was conducted using DR-TB data collected from the Tuberculosis Control Institute of Hunan Province between 2012 and 2018. Spatial clustering of DR-TB was explored using the Getis-Ord statistic. A Poisson regression model was fitted with a conditional autoregressive prior structure, and with posterior parameters estimated using a Bayesian Markov chain Monte Carlo simulation, to quantify associations with possible risk factors and identify clusters of high DR-TB risk.ResultsA total of 2649 DR-TB patients were reported to Hunan TB Control Institute between 2012 and 2018. The majority of the patients were male (74.8%, n=1983) and had a history of TB treatment (88.53%, n=2345). The proportion of extensively DR-TB among all DR-TB was 3.3% (95% CI 2.7% to 4.1%), which increased from 2.8% in 2012 to 4.4% in 2018. Of 1287 DR-TB patients with registered treatment outcomes, 434 (33.8%) were cured, 198 (15.3%) completed treatment, 92 (7.1%) died, 108 (8.3%) had treatment failure and 455 (35.3%) were lost to follow-up. Half (50.9%, n=655) had poor treatment outcomes. The annual cumulative incidence rate of notified DR-TB increased over time from 0.25 per 100 000 people in 2012 to 0.83 per 100 000 people in 2018. Substantial spatial heterogeneity was observed, and hotspots were detected in counties located in the North and East parts of Hunan province. The cumulative incidence of notified DR-TB was significantly associated with urban communities.ConclusionThe annual incidence of notified DR-TB increased over time in Hunan province. Spatial clustering of DR-TB was detected and significantly associated with urbanisation. This finding suggests that targeting interventions to the highest risk areas and population groups would be effective in reducing the burden and ongoing transmission of DR-TB.

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