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Determination of persistent organohalogen pollutants using GC/MS/MS methods
Grabic, Roman ; Pacáková, Věra (advisor) ; Ševčík, Jiří (referee) ; Matisová, Eva (referee)
Conclusions o MSiMS methods for analysis of PCDD/Fs, PCBs, OCPs, and PBDES were develoPed o GC separations were optimized for MS/MS detection methods o GC/MS/MS optimized methods were validated. o Limits of quantification at level 0.1 - I pg/pl were achieved. o Linear response over four orders of magnitude was achieved except for some OCPs. o The selectivity of methods is better or comparable with a reference HRMS method' o Cost of GC/MS/MS analysis is significantly lower comPared to GC/HRMS o Developed methods were successfully applied for o Human blood, milk and adipose tissue analysis o Studies of de novo synthesis and destruďion of halogenated POP o In vitro study of PCB accumulation in human cells o List of application is enclosed Page 12
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The Development of Small Company
Fiedler, Viktor ; Śevčík, Jiří (referee) ; Śevčík, Jiří (referee) ; Koráb, Vojtěch (advisor)
This bachelor’s thesis presents possibilities and directions of the development of small company. It describes the structure of small company and the problematic of its development. It analyses present economical, financial and business situation inside and outside the company. In the second part author introduces some proposals for improving several parts of company.
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Proces Modeling as a Tool for Process Improving
Střížová, Blanka ; Ševčík, Jiří (referee) ; Juřica, Pavel (advisor)
This thesis engages in process modelling and description of selected business processes which are underway in the department of Economy and Operation of the Czech TV, in Television studio in Brno. The process models are created using the CASE tool Adonis. The theoretical part is focused on clarifying important concepts, methodologies and tools in the process management. In the analytical part, the selected processes are thoroughly described and graphically illustrated. The proposal part of the thesis highlights the improvement of selected business processes and assesses their effectiveness.
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Measurements of small flow in water service connections
Stehlíková, Veronika ; Ševčík, jiří (referee) ; Tuhovčák, Ladislav (advisor)
In the first part of this thesis the basic information about the losses of water and their reporting are described. There are presented the means and methods of reducing water losses and their suitability for use. Finally, general information about water meters are presented and the UFR device is briefly described. The second part of the thesis is devoted to testing water meter and UFR device on specific water connection in a family house. The thesis resulted in the author's general recommendations for owners and operators of water supply networks.
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The characterization and prediction of stationary phase properties used in solid-phase microextraction (SPME) for sampling of volatile organic compounds in air samples and the development of a new type of needle concentrator (INCAT) for sampling of BTEX from aqueous samples
Přikryl, Petr ; Ševčík, Jiří (advisor) ; Feltl, Ladislav (referee) ; Komárek, Karel (referee) ; Leníček, Jan (referee)
UNIVERZITA KARLOVA V PRAZE, PŘÍRODOVĚDECKÁ FAKULTA Katedra analytické chemie CHARLES UNIVERSITY IN PRAGUE, FACULTY OF SCIENCE Department of Analytical Chemistry CHARAKTERIZACE A PREDIKCE VLASTNOSTÍ STACIONÁRNÍCH FÁZÍ POUŽÍVANÝCH PŘI MIKROEXTRAKCI NA TUHOU FÁZI (SPME) PRO VZORKOVÁNÍ TĚKAVÝCH ORGANICKÝCH LÁTEK V OVZDUŠÍ A VÝVOJ NOVÉHO TYPU JEHLOVÉHO KONCENTRÁTORU (INCAT) PRO VZORKOVÁNÍ BTEX Z VODNÝCH VZORKŮ THE CHARACTERIZATION AND PREDICTION OF STATIONARY PHASE PROPERTIES USED IN SOLID-PHASE MICROEXTRACTION (SPME) FOR SAMPLING OF VOLATILE ORGANIC COMPOUNDS IN AIR SAMPLES AND THE DEVELOPMENT OF A NEW TYPE OF NEEDLE CONCENTRATOR (INCAT) FOR SAMPLING OF BTEX FROM AQUEOUS SAMPLES Souhrn doktorské disertační práce Summary of the Ph.D. Thesis Praha 2008 Mgr. Petr Přikryl Disertační práce byla vypracována na Katedře analytické chemie, PřF UK v Praze v letech 2000-2008. Uchazeč/Candidate: Mgr. Petr Přikryl Adres/Address: Katedra analytické chemie Hlavova 2030/8 Praha 2 CZ12843 Email: petr.prikryl@lf1.cuni.cz Obor/Branch: Analytická chemie Školitel/Advisor: Prof. Ing. Jiří Ševčík, DrSc. - 3 - 1. Úvod Analýza mnoha environmentálních polutantů je velmi často obtížná vzhledem ke komplexnosti vzorkovaných matric, a také protože povolené obsahy polutantů v jednotlivých složkách životního prostředí (vzduch, voda, půda)...
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Robotizované dojení a jeho působení na dojnice
Ševčík, Jiří
The objective of the dissertation thesis was to evaluate the effects of two different types of milking systems (CMS - conventional milking system vs. AMS - an automatic milking system) on average daily milk yield, on frequency of attending robots, on pre-milking teat preparation procedures and stimulation and milking time, on the teats traumatization of Holstein cows. The experiments were performed in two locations: Žabčice School Farm of Mendel University in Brno and ZEMAX, a. s. in Šitbořice. Data was collected for a period 1st January 2014 to 15th December 2015. Higher average milk yield per day and lower milk yield per milking on the other hand on the farm with AMS were caused by a higher frequency of milking. Cows on farm with CMS were milked twice a day. On the farm with AMS dairy cows were milked in accordance with their own needs. Milking frequency in the AMS was in 2014 2.47, in 2015 2.88 per day. Heat stress has negative impacts on milk production. Effect of heat stress showed more markedly in 2015, which is probably related to the fact that the value of THI greater than 80 lasted longer. The length of pre-milking teat preparation procedures and stimulation various neighborhoods was found in AMS in 2014 from 0:13 min. to 0:16 min., in 2015 from 0:14 min. to 0:19 min. On farm with CMS time not be registered. The length of milking time with CMS in both years was 5:02 min. In AMS was in 2014 from 3:03 minutes to 3:53 min., in 2015 from 3:05 min. to 4:45 minutes. In process of milking machine teat traumatization were smaller when using AMS.
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The Development of Small Company
Fiedler, Viktor ; Śevčík, Jiří (referee) ; Śevčík, Jiří (referee) ; Koráb, Vojtěch (advisor)
This bachelor’s thesis presents possibilities and directions of the development of small company. It describes the structure of small company and the problematic of its development. It analyses present economical, financial and business situation inside and outside the company. In the second part author introduces some proposals for improving several parts of company.
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Determination of persistent organohalogen pollutants using GC/MS/MS methods
Grabic, Roman ; Pacáková, Věra (advisor) ; Ševčík, Jiří (referee) ; Matisová, Eva (referee)
Conclusions o MSiMS methods for analysis of PCDD/Fs, PCBs, OCPs, and PBDES were develoPed o GC separations were optimized for MS/MS detection methods o GC/MS/MS optimized methods were validated. o Limits of quantification at level 0.1 - I pg/pl were achieved. o Linear response over four orders of magnitude was achieved except for some OCPs. o The selectivity of methods is better or comparable with a reference HRMS method' o Cost of GC/MS/MS analysis is significantly lower comPared to GC/HRMS o Developed methods were successfully applied for o Human blood, milk and adipose tissue analysis o Studies of de novo synthesis and destruďion of halogenated POP o In vitro study of PCB accumulation in human cells o List of application is enclosed Page 12
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