scholarly journals Phytoindication of environmental mutagenesis in the in-situ conditions using the pollen of selected species of native flora

2021 ◽  
Author(s):  
Karol Mičieta
Keyword(s):  
Pollen Grains ◽  
Heavy Load ◽  
Native Flora ◽  
In Situ Conditions ◽  
Environmental Mutagenesis ◽  
Term Monitoring ◽  
Long Term Experience

The aim of this study is to provide an effective method for indicating ecogenotoxicity in the environment using pollen grains and microspores of selected species of the native flora in the in situ conditions. In the report, we summarize the results of long-term experience with the benefits of native flora species as bioindicators of polluted environments. We present the current results of long-term monitoring of phytoindication of ecogenotoxicity in Bratislava and selected traffic junctions in Slovakia. The increase of pollen grain abortion in the group of localities exposed to a heavy load of traffic pollution demonstrates the ecogenotoxic impact of traffic emissions in the environment. The detailed practical methodological tools and possible difficulties with the classification of abortivity of microspores and pollen grains of these plant species are discussed.

scholarly journals ENVIRONMENTAL POLLUTION BY WASTEWATER FROM BROWN COAL PROCESSING ¬ A REMEDIATION CASE STUDY IN GERMANY

2014 ◽  
Vol 22 (1) ◽  
pp. 71-83 ◽  
Author(s):  
Arndt Wiessner ◽  
Jochen A. Müller ◽  
Peter Kuschk ◽  
Uwe Kappelmeyer ◽  
Matthias Kästner ◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Large Scale ◽  
Pilot Scale ◽  
Wastewater Disposal ◽  
Interdisciplinary Approaches ◽  
Phenolic Wastewater ◽  
Term Monitoring

The large scale of the contamination by the former carbo-chemical industry in Germany requires new and often interdisciplinary approaches for performing an economically sustainable remediation. For example, a highly toxic and dark-colored phenolic wastewater from a lignite pyrolysis factory was filled into a former open-cast pit, forming a large wastewater disposal pond. This caused an extensive environmental pollution, calling for an ecologically and economically acceptable strategy for remediation. Laboratory-scale investigations and pilot-scale tests were carried out. The result was the development of a strategy for an implementation of full-scale enhanced in situ natural attenuation on the basis of separate habitats in a meromictic pond. Long-term monitoring of the chemical and biological dynamics of the pond demonstrates the metamorphosis of a former highly polluted industrial waste deposition into a nature-integrated ecosystem with reduced danger for the environment, and confirmed the strategy for the chosen remediation management.

Long-Term Experience with Biocompatible Ossicular Implants

1986 ◽  
Vol 94 (6) ◽  
pp. 611-616 ◽  
Author(s):  
John R. Emmett ◽  
John J. Shea ◽  
William H. Moretz
Keyword(s):  
Chronic Otitis Media ◽  
Hearing Results ◽  
Common Causes ◽  
Ossicular Replacement ◽  
Stapes Prosthesis ◽  
Short And Long Term ◽  
Conductive Hearing ◽  
Long Term Experience

The senior author's 8-year personal experience with biocompatible ossicular implants is reviewed. Four hundred sixty-one consecutive operations, in which high-density polyethylene sponge ossicular replacement prostheses were used, are grouped according to the Bellucci classification of chronic otitis media. The prostheses used were the drum-to-footplate prosthesis (TORP, total) and the drum-to-stapes prosthesis (PORP, partial)*. Each group's short- and long-term hearing results are compared. Prosthesis extrusion and persistent or recurrent conductive hearing loss are the most common causes of operation failure. Failures within each group are analyzed, and techniques to prevent these complications are outlined.

scholarly journals Primary biliary cholangitis – a new nosological unit in the classification of liver diseases (literature review and own clinical observation)

2019 ◽  
pp. 76-82
Author(s):  
T. V. Penkina ◽  
E. A. Shikina ◽  
D. T. Dicheva ◽  
O. E. Berezutskaya ◽  
N. L. Golovkina ◽  
...  
Keyword(s):  
Biochemical Parameters ◽  
Clinical Observation ◽  
Primary Biliary Cholangitis ◽  
Routine Practice ◽  
Biliary Cirrhosis ◽  
Long Term Monitoring ◽  
Definition Of ◽  
Term Monitoring

Identification of changes in biochemical parameters of liver functional activity during screening studies requires additional examination of the patient in order to determine the genesis of the disease. In recent years, in routine practice, the most frequently used is an isolated definition of the level of transaminases (ALT, AST), which does not allow timely detection of latent cholestasis syndrome. Primary biliary cholangitis (PBC), previously referred to as primary biliary cirrhosis, is a relatively rare chronic autoimmune cholesthetic liver disease, predominantly affecting middle-aged women and prone to progressing liver cirrhosis. The recommendations of AASLD and EASL note the need for long-term monitoring of patients with ongoing UDCA therapy and regular diagnostic studies to identify signs of disease progression. A clinical example of successful treatment of a patient with PBC with the Russian drug Exhol® is described.

Personnel Risks in Implementation Competence Approach in Personnel Management: Classification, Identification, Minimization

2015 ◽  
Vol 4 (5) ◽  
pp. 30-34
Author(s):  
Чуланова ◽  
Oksana Chulanova ◽  
Борисенко ◽  
N. Borisenko
Keyword(s):  
Personnel Management ◽  
Practical Experience ◽  
Economic Environment ◽  
Account Managers ◽  
Management Staff ◽  
Long Term Experience

A practical experience of competent approach in personnel management of core organization showed that there are risks in the implementation of the model of competence and avoid them in the current economic environment is very difficult. This fact must be taken into account managers for timely prevention, prevention and minimization of personnel risks. In this study particular personnel risks in implementing competence-based approach to the management staff of the organization are presented. The authors have been considered competent approach, especially its use in personnel management, as well as the classification of personnel risks, developed a method to minimize personnel risks in implementing competence-based approach to working with the staff of the organization. The material for this article is a long-term experience of domestic and foreign scientists to study in detail the effectiveness of this approach.

scholarly journals Possible mechanism of the formation of the Jichechang ground fissure in Datong, China, based on in-situ observations

2021 ◽  
Vol 80 (14) ◽  
Author(s):  
Ruichun Liu ◽  
Chengsheng Yang ◽  
Qingliang Wang ◽  
Lingyun Ji
Keyword(s):  
Vertical Direction ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Vertical Movement ◽  
Disaster Mitigation ◽  
Ground Fissure ◽  
In Situ Observations ◽  
Term Monitoring

AbstractThe Datong region of China suffers from severe ground fissure (GF) disasters. The Jichechang ground fissure (JGF) is typical among the GFs in Datong and is the most active. To provide scientific guidance for disaster mitigation, understanding the mechanisms governing GF activity in Datong needs to be improved. Here, long-term monitoring data (> 10 years) for the JGF are used to study the characteristics of its activity. The results show that the formation of GFs is mainly controlled by concealed faults. The JGF is mainly active in the vertical direction, with a differential vertical displacement 2.5 times greater than the horizontal displacement. The GF activity is periodic, with a periodicity of 320–420 days, which corresponds to the cycle of local agricultural irrigation. The JGF is especially active in June and July. The vertical activity of this fissure also displays a distinct quasi-periodic step-like displacement acceleration with a duration of 18–38 days. Numerical simulations show that irrigation pumping within 10 km of the JGF has a significant effect on the vertical movement of GFs. These results provide a better understanding of the mechanisms governing GF activity in this area and provide a valuable reference for the study of GFs in other regions.

Microbial Ecology Studies of the Metula Spill in the Straits of Magellan

1978 ◽  
Vol 35 (5) ◽  
pp. 573-580 ◽  
Author(s):  
R. R. Colwell ◽  
A. L. Mills ◽  
J. D. Walker ◽  
P. Garcia-Tello ◽  
V. Campos-P.
Keyword(s):  
Oil Spills ◽  
Bacterial Populations ◽  
In Situ Conditions ◽  
Degrading Bacteria ◽  
Cold Tolerant ◽  
Term Basis ◽  
Spilled Oil ◽  
Straits Of Magellan

The grounding of the tanker V.L.C.C. Metula in the Straits of Magellan in August 1974 provided a unique opportunity to study a massive spill in a cold region on a long-term basis. Removal of spilled oil from the Metula was solely by in situ physiochemical and biological mechanisms. Microbiological studies undertaken in May 1976 showed increased heterotrophic bacterial populations at oil-impacted sites. A cold-tolerant population of petroleum degrading bacteria was observed. From biodegradation studies, we concluded that oil degradation under in situ conditions proceeds relatively slowly, with marked persistence of Metula oil in the Straits of Magellan 2 yr after the original spill. Key words: petroleum degradation, oil spills, Straits of Magellan, microbial degradation of oil, Metula

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