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Laboratory electronic load 400 W
Horna, Aleš ; Szabó, Zoltán (referee) ; Steinbauer, Miloslav (advisor)
This thesis deals with the construction of a laboratory electronic load purpose of which is to test various sources of electric energy, for instance electronic power supplies or accumulators. The thesis states possible designs of electronic circuits forming such an electronic load, it mentions factory manufactured devices, it describes the way of designing parts of the device, choice of components, conduction of circuit simulations for function verification of designed circuits and mechanical construction.
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Laboratory electronic load 400 W
Horna, Aleš ; Szabó, Zoltán (referee) ; Steinbauer, Miloslav (advisor)
This thesis deals with the construction of a laboratory electronic load purpose of which is to test various sources of electric energy, for instance electronic power supplies or accumulators. The thesis states possible designs of electronic circuits forming such an electronic load, it mentions factory manufactured devices, it describes the way of designing parts of the device, choice of components, conduction of circuit simulations for function verification of designed circuits and mechanical construction.
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Application of HPLC technique in analysis of food supplements based on plant extracts
Fibigr, Jakub ; Šatínský, Dalibor (advisor) ; Cahlíková, Lucie (referee) ; Horna, Aleš (referee)
ABSTRACT Charles University, Faculty of Pharmacy in Hradec Králové Department of Analytical Chemistry Candidate: Mgr. Jakub Fibigr Supervisor: doc. RNDr. Dalibor Šatínský, Ph.D. Title of the Dissertation Thesis: Application of HPLC technique in analysis of food supplements based on plant extracts The disseration thesis deals with complex issues of food supplements based on plant extracts in terms of the content of bioactive substances, purity assessment, and legislative efficacy and safety requirements. The quality of food supplements available on the market in the Czech Republic was tested in six studies. Two HPLC and four UHPLC methods have been developed and validated to determine the content of bioactive substances in food supplements containing plant extracts and other excipients. In each work, such analytical conditions were found allowing a rapid and accurate determination of the content of the given bioactive substances in food supplements, particulary in the problematic separations of some isomeric substances. Additionally, sample preparation methods for each group of food supplement samples have been developed and optimized to avoid the matrix interferences during the separation and detection of analyzed bioactive substances. A conventional approach to the analytical determination of the...
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Application of HPLC technique in analysis of food supplements based on plant extracts
Fibigr, Jakub ; Šatínský, Dalibor (advisor) ; Cahlíková, Lucie (referee) ; Horna, Aleš (referee)
ABSTRACT Charles University, Faculty of Pharmacy in Hradec Králové Department of Analytical Chemistry Candidate: Mgr. Jakub Fibigr Supervisor: doc. RNDr. Dalibor Šatínský, Ph.D. Title of the Dissertation Thesis: Application of HPLC technique in analysis of food supplements based on plant extracts The disseration thesis deals with complex issues of food supplements based on plant extracts in terms of the content of bioactive substances, purity assessment, and legislative efficacy and safety requirements. The quality of food supplements available on the market in the Czech Republic was tested in six studies. Two HPLC and four UHPLC methods have been developed and validated to determine the content of bioactive substances in food supplements containing plant extracts and other excipients. In each work, such analytical conditions were found allowing a rapid and accurate determination of the content of the given bioactive substances in food supplements, particulary in the problematic separations of some isomeric substances. Additionally, sample preparation methods for each group of food supplement samples have been developed and optimized to avoid the matrix interferences during the separation and detection of analyzed bioactive substances. A conventional approach to the analytical determination of the...
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Application of HPLC technique in analysis of food supplements based on plant extracts
Fibigr, Jakub ; Šatínský, Dalibor (advisor) ; Cahlíková, Lucie (referee) ; Horna, Aleš (referee)
ABSTRACT Charles University, Faculty of Pharmacy in Hradec Králové Department of Analytical Chemistry Candidate: Mgr. Jakub Fibigr Supervisor: doc. RNDr. Dalibor Šatínský, Ph.D. Title of the Dissertation Thesis: Application of HPLC technique in analysis of food supplements based on plant extracts The disseration thesis deals with complex issues of food supplements based on plant extracts in terms of the content of bioactive substances, purity assessment, and legislative efficacy and safety requirements. The quality of food supplements available on the market in the Czech Republic was tested in six studies. Two HPLC and four UHPLC methods have been developed and validated to determine the content of bioactive substances in food supplements containing plant extracts and other excipients. In each work, such analytical conditions were found allowing a rapid and accurate determination of the content of the given bioactive substances in food supplements, particulary in the problematic separations of some isomeric substances. Additionally, sample preparation methods for each group of food supplement samples have been developed and optimized to avoid the matrix interferences during the separation and detection of analyzed bioactive substances. A conventional approach to the analytical determination of the...
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Sustainable agrotechnical advancement: Crop yield increase caused by natural stimulants
Vlasáková, Blanka ; Albrechtová, Jana ; Bartoš, M. ; Frantík, Tomáš ; Horna, A. ; Koblihová, Helena ; Kotyza, P. ; Kovářová, Marcela ; Látr, A. ; Nývltová, Z. ; Pilařová, M. ; Vazačová, Kristýna ; Vosátka, Miroslav
Based on a number of experiments, mostly field ones, positive effects of the described natural stimulants are used to increase utility value and yield properties of selected crops and offered as a non-risk, environment-friendly agricultural chemicals
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