Control of technological process using PLC

Ve své práci se zabývám rozborem programovatelných automatů simatic, má práce zahrnuje tyto prvky: Historie PLC; programovatelný automat, jehorozdělení a funkce, programovací jazyky, programovací prostředí STEP, komunikace s PLCMy work deals with analysis of programmable automatic machines and includes these elements: History PLC, automatic programming, its distribution and fiction,programming languages, programming environment STEP, Communication with PLC

College Suicide: A Law and Policy Perspective

Gary Pavela, author of Questions and Answers on College Student Suicide: A Law and Policy Perspective and currently director of the Syracuse University Academic Integrity Office, delivers a lecture titled College Suicide: A Law and Policy Perspective

Paralytic Shellfish Poisoning (PSP) in the Central Adriatic Sea

Surveillance of Paralytic Shellfish Poisoning (PSP) in the Ka{tela Bay, Central Adriatic Sea, was conducted in the summers of 1995 through 1997. Toxicity was assessed by the mouse bioassay according to the method proposed by the Association of Official Analytical Chemists (AOAC). Incidence of shellfish intoxication by PSP toxins was recorded on several occasions, however at levels not endangering human health. Along with shellfish sampling, seawater samples were taken for analysis of the phytoplankton community and the numerical cell abundance. The phytoplankton composition demonstrates a recurring incidence of Lyngulodinium polyedra, and frequent presence of species from the Alexandrium, Gymnodinium and Gyrodinium genera, well known progenitors of PSP and its analogues. Possible recurrence of such phenomena and their distribution to other regions of the Adriatic coast may have serious health and economic consequences, calling for continuous monitoring of phytoplankton composition and toxicological studies of shellfish

Alkaline Phosphatase Activity in Seawater: Influence of Reaction Conditions on the Kinetic Parameters of ALP

Alkaline phosphatase (ALP) is an extracellular enzyme enabling utilisation of phosphomonoesters as the source of inorganic phosphate (Pi) required for the maintenance of cellular metabolism. Its catalytic properties have been extensively studied in aquatic environments in an attempt to describe its influence on phosphorous cycling in natural waters. Despite its significance and frequent determination, no standard method has been developed so far. In order to examine the effect of various reaction conditions on the kinetic properties of ALP in seawater, the stability of ALP in chloroform-stabilised samples has been studied in addition to the influence of the buffer type, its concentration and pH, the metal-ion content, Pi and incubation time. It might be concluded that the kinetic properties of ALP are significantly influenced by the buffer pH, the concentration of Mg2+ and Zn2+ ions and the incubation period, requiring a precise definition of these reaction parameters in determining a standard method for the measurement of ALP activity in water media

Identification of onosma visianii roots extract and purified shikonin derivatives as potential acaricidal agents against tetranychus urticae

There is an increasing need for the discovery of reliable and eco-friendly pesticides and natural plant-derived products may play a crucial role as source of new active compounds. In this research, a lipophilic extract of Onosma visianii roots extract containing 12% of shikonin derivatives demonstrated significant toxicity and inhibition of oviposition against Tetranychus urticae mites. Extensive chromatographic separation allowed the isolation of 11 naphthoquinone derivatives that were identified by spectral techniques and were tested against Tetranychus urticae. All the isolated compounds presented effects against the considered mite and isobutylshikonin (1) and isovalerylshikonin (2) were the most active, being valuable model compounds for the study of new anti-mite agents

Sexual and emotional jealousy in relation to the facial sexual dimorphism of a potential rival

Background and purpose: Previous studies have shown that men are more sensitive to sexual infidelity, while women are more sensitive to emotional infidelity. Studies have also shown that jealousy is evoked by the rival’s desirable characteristics. Therefore, it was assumed that women would be more jealous of a woman with a feminine face, while men would report greater levels of jealousy when presented with a rival with a masculine face. It was also predicted that these expected differences would depend on the infidelity type – sexual and emotional. Based on this, the aim of this study was to investigate differences in jealousy in relation to participants’ sex, the type of infidelity and the rival’s facial sexual dimorphism. Materials and methods: The study included 401 (164 men and 237 women) participants, aged between 18 and 35. Jealousy was assessed by using hypothetical scenarios of a partner’s emotional and sexual infidelity that involved rivals with a masculine and feminine face. Participants reported the intensity of jealousy on a 7-point scale. Results and conclusions: As predicted, men reported higher levels of jealousy over sexual, whereas women were more upset over emotional infidelity. Moreover, while there was no difference in jealousy among men in relation to the rival’s facial sexual dimorphism, women reported a higher intensity of jealousy toward a rival with a feminine face, regardless of the infidelity type. These results are interpreted by different adaptive mechanisms in men and women

Backup power supply R 22 kV Studenka from MV Lines

Import 22/07/2015Cílem této diplomové práce je vymyslet záložní napájení R 22 kV Studénka při výpadku transformátoru T101 a T102. Jako alternativa záložního napájení, budou užity rozvodny Kletné a Příbor. Pro výpočet chodu sítě a řešení náhradního napájení budou použity výpočtové programy E-Vlivy a Daisy Bizon Projektant. Součástí práce bude i porovnání těchto dvou programů. Výsledkem bude technicko-ekonomické vyhodnocení všech navržených variant.The aim of this Master thesis is to develop a backup power supply R 22kV Studenka in case of a failure of a transformer T101 and T102. Substations in Kletna and Pribor will be used as an alternative to backup power supply. For calculation of network functionality and standby power supply solutions, calculation programs E-Vlivy and Daisy Bizon Projektant will be used. The thesis also includes comparison of these two programs. The result will be techno-economic evaluation of all proposed options.410 - Katedra elektroenergetikyvýborn

Production preparation for construction of civil building

Import 15/01/2013Řešením této diplomové práce je vypracování dokumentaci pro realizaci stavby administrativní budovy v Polešovicích. Součástí práce je řešení výrobní přípravy výstavby administrativní budovy. Výrobní příprava výstavby obsahuje rozpočet, harmonogram stavebních prací, kontrolní a zkušební plán a bilance hlavních zdrojů na výstavbu. Bilance hlavních zdrojů obsahuje návrh pracovníků, materiálů, mezd a mechanismů. Součástí práce je návrh zařízení staveniště. Hlavním úkolem výrobní přípravy je stanovení nejvhodnějšího režimu pro realizaci stavby.The aim of this diploma thesis is to create documentation for building realization a new office building in Polesovice. A Part of the thesis is to design a production preparation of construction of administrative building. The production preparation includes the construction budget, schedule of work, inspection and test plan and balance of main sources for the construction of. The balance of sources includes a proposal number of workers, materials, wages and mechanisms. The site equipment is a part of diploma thesis. The main task of the production preparation is a determination of the most suitable mode for the construction project.Prezenční225 - Katedra pozemního stavitelstvívýborn