|
|
Mechanism of uptake of heavy metals and organic compounds by plants
Berkyová, Petra ; Soudek, Petr (advisor) ; Petrová, Šárka (referee)
Heavy metals and organic compounds represent a great problem for environment. Therefore, attention is paid to the development of techniques for removing these pollutants from the sites of pollution. One of the possibilities is that heavy metals and organic compounds are removed from soil by using fytoremediation. Fytoremediation uses the ability of some plant species to uptake toxic compounds from soil and accumulate these compounds in its tissues. These plants are able to tolerate higher amounts of toxic compounds than it's usual because of the broad range of detoxification mechanisms, which are taking place in these plants. After the root uptake, heavy metals may be chelated by phytochelatins, metallothioneins or other chelators and subsequently stored in vacuoles. Transport of metal ions and metal complexes between cells compartments is mediated by many specific transport proteins. Detoxification mechanisms of organic compounds involve transfomation, conjugation and store of these compounds in plant tissues.
|
|
|
Alcohol Detoxitication Center for Children and Youths its Function and Significance in the Network of Institutions which Provide Treatment
DUKOVÁ, Ivana
The objective of this thesis was the description of the work of the Child and Adolescent Detoxification Centre in Prague, its importance in the treatment drug addiction among children and adolescents. Another objective was to find out about the interrelationship of the work of regional coordinators for the prevention of risk behaviour and forms of follow-up therapy according to individual needs and nature of Child and Adolescent Detoxification Centre in Prague. The research conducted in the period from January to March 2010. Mapping the variants of follow-up therapy of the clients using habit-forming drugs in different regions of the Czech Republic and the forms of prevention are other objectives. The theoretical part of the thesis contains the description of the establishment of the Hospital of Sisters of Mercy of St. Charles Borromeo, in the premises of which the Child and Adolescent Detoxification Centre (CaADC) in Prague is located, as well as the description of the CaADC, and its medical and other personnel. The thesis describes the process of hospitalization, tests which preceded it and the necessary procedures to ensure successful completion of the hospitalization. Part of the theoretical block is dedicated to the care provided by a social worker, psychologist and therapists. Related legislation that forms the basis of prevention methods of individual regional drug coordinators and the centre itself is an integral part of the work. Prevention is a critical form of struggle against the abuse of psychotropic substances by children and adolescents. It is described in detail here, as well as the factors involved in the development of addiction. Other related terms only complement the mosaic of the studied issue. Within quantitative research, a content analysis of the data from the statistics of the Child and Adolescent Detoxification Centre in Prague was used to verify set hypotheses. The responses of regional drug coordinators to a set of open and semi-open questions, which were formulated for this purpose, were also used. Another source was the results of standardized interviews with three doctors at the Child and Adolescent Detoxification Centre in Prague. Hypotheses 1, 3 and 5 have not been confirmed. On the contrary, hypotheses 2 and 4 have been confirmed. The set objectives have been met. Unfortunately, our country still lacks a sufficient number of facilities that provide follow-up care of child drug addicts, as is clear from the research.
|
|
|
Technology of Catalytic Dehalogenation of POPs
Pekárek, Vladimír ; Ocelka, T. ; Grabic, R.
The present work deals with the results of the basic and applied research of mechanisms of formation and detoxification of dioxins and chemically similar compounds (ödioxin-like compounds), especially PCDF, PCB, OCP and others. This work is concerned with application consequences of the results of laboratory and pilot plant tests. The application of immediate concern is the destruction of POP compounds in the fly ash and other materials contaminated by POPs.
|
guest ::
