Significantly influence subjective psychological Stress perceived Factor Analysis.

Název: Analýza faktorů, které významně ovlivňuji subjektivní vnímání psychické zátěže. Cíle: Hlavním cílem diplomové práce je porovnání změn subjektivně vnímané zátěže u skupiny vojenských profesionálů před a následně po zátěži, které jsou denně vystaveni při výkonu svého povolání. Metody: V práci byla použita metoda výzkumu formou standardizovaného dotazníku skládajícího se ze dvou forem otázek, z nichž jedna byla položena zkoumanému vzorku před zátěží a druhá forma po zátěži. Poté byly obě formy dotazníků analyzovány a statisticky vyhodnoceny. Výsledky: Výzkumem bylo zjištěno, že ze zkoumaných faktorů věku, vzdělání a délky služby u jednotky, má na změny subjektivně vnímané psychické zátěže největší vliv věk a délka služby u jednotky. Dále bylo zjištěno, že ke konci celodenní směny se subjektivně vnímaná zátěž u jednotky zvýšila. Klíčová slova: stres, psychická zátěž, frustrace, trauma, PTSD, zahraniční mise, voják.Title: Significantly influence subjective psychological Stress perceived Factor Analysis. Objectives: The main Aim of this Work is subjective perceived psychological Stress changing comparation of professional Soldiers Group before and after psychological Stress, They receive every Day in their Job. Methods: The Method used in this Work is Research by standard Questionnaire consists of two Parts. One of Them was realised before psychological Stress and the second One was realised after the psychological Stress. Both Parts of Questionnaires was analyzed and statisticaly evaluated. Results: By the Research was found, that from researching Age, Education and Length of Service in Unit Factors, the most significant Influence on Changes of subjective perceived psychological Stress have the Age and the Length of Service Factors. After that was found, the subjective perceived psychological Stress at the End of all-day Duty have increased. Keywords: Stress, psychological Stress, Frustration, Trauma, Post-traumatic Stress Disorder, peacekeeping Operation, Soldier.Technické a úpolové sportyFaculty of Physical Education and SportFakulta tělesné výchovy a sport

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Tato bakalářská práce pojednává o využití mikropočítače Beagleboard–xM pro domácí použití.This bachelor’s thesis shows embeded system Beagleboard–xM for home used.

Use of Statistical Methods for Progression Evaluation of Parkinson’s Disease

Tato diplomová práce se zabývá použitím statistických metod pro hodnocení progrese Parkinsonovy nemoci. Je zde uveden stručný popis Parkinsonovy nemoci. Dále je uvedeno zpracování a vyhodnocení hodnot řečových parametrů, které jsou Parkinsonovou nemocí ovlivňovány. V diplomové práci je popsáno zpracování hodnot pomocí klasifikačních a regresních stromů a vyhodnocení výsledků pomocí průměrné absolutní chyby a odhadované odchylky. Zpracování a vyhodnocení hodnot bylo provedeno v software MATLAB.This master’s thesis takes aim with the use of statistical methods for progression evaluation of Parkinson’s disease. There is a brief description of Parkinson’s disease. It is further stated processing and evaluation of values of speech parameters which are affected by Parkinson’s disease. The thesis describes the process using the values of classification and regression trees and evaluate results using the mean absolute error and estimated error. Processing and evaluation of values was done in MATLAB software.

Pilot-scale production of biodiesel from waste fats and oils using tetramethylammonium hydroxide

Annually, a great amount of waste fats and oils not suitable for human consumption or which cannot be further treated are produced around the world. A potential way of utilizing this low-cost feedstock is its conversion into biodiesel. The majority of biodiesel production processes today are based on the utilization of inorganic alkali catalysts. However, it has been proved that an organic base - tetramethylammonium hydroxide - can be used as a very efficient transesterification catalyst. Furthermore, it can be employed for the esterification of free fatty acids - reducing even high free fatty acid contents to the required level in just one step. The work presented herein, is focused on biodiesel production from waste frying oils and animal fats using tetramethylammonium hydroxide at the pilot-plant level. The results showed that the process performance in the pilot unit - using methanol and TMAH as a catalyst, is comparable to the laboratory procedure, even when the biodiesel is produced from waste vegetable oils or animal fats with high free fatty acid content. The reaction conditions were set at: 1.5% w/w of TMAH, reaction temperature 65. °C, the feedstock to methanol molar ratio to 1:6, and the reaction time to 120. min. The conversion of triglycerides to FAME was approximately 98%. The cloud point of the biodiesel obtained from waste animal fat was also determined. © 2015 Elsevier Ltd.Ministry of Education, Youth and Sports of the Czech Republic [MSMT-7778/2014]; European Regional Development Fund under CEBIA-Tech Project [CZ.1.05/2.1.00/03.0089, CZ.1.07/2.3.00/30.0035

Mathematical modelling of a process-economic of protein hydrolyzate production from lupine flour

The aim of the present work is to perform the mathematical modelling and computer simulation of the lupine flour hydrolysis technology, which includes the calculations and also the partial comparison of different process variants. Lupine flour is deemed as a source of valuable protein with a substantial content of essential amino acids which has a significant impact on the prevention of various diseases in a human diet. The proposed mathematical model for the production process enables to accomplish the optimal operating conditions while the specific costs for the production of valuable hydrolyzate are minimal. The suggested process-economic mathematical model for the production hydrolysis unit comprises the three main processes for the implementation of the hydrolyzate production, i.e. the chemical reaction and its kinetics, the separation of solids from the reaction mixture by filtration and the thickening of the final product. The results have shown that in most of the simulation cases, the economic optimum occurs and thus the application of the model is valuable for the practical purposes of protein hydrolyzate production. © 2019, World Scientific and Engineering Academy and Society. All rights reserved

Development and validation of a simple and reliable alternative method for process monitoring and final product quality control during fatty acid ethyl esters production

As the production of biofuels increase, there is an urgent need to easily analytically control their production at the plant level as well as to assess the quality of the final products. Especially method capable of determining fatty acid ethyl ester content of 96.5% is crucial for utilization in praxis. In this work, a refractive index method with required sensitivity was developed and validated by means of a standard reference gas chromatography method. Validation with a considerable set of real unique samples obtained at pilot scale was performed for both purposes – process monitoring at high conversions and final product quality control. The results confirmed a favourable degree of accuracy with a relative deviation lower than 3.5% from the reference value given by the gas chromatography. Moreover, application of the method for quality control of fresh and long-term stored samples revealed that the deterioration of final products during storage can be detected. The developed refractive index method is thus suitable for the simple and rapid evaluation of the quality of produced fatty acid ethyl esters and for analytical monitoring of their production process. © 2021 The AuthorsEuropean Regional Development Fund under the project CEBIA-Tech Instrumentation [CZ.1.05/2.1.00/19.0376]; internal project of the Tomas Bata University in Zlin [RVO/CEBIA/2020/003]Univerzita Tomáše Bati ve Zlíně: RVO/CEBIA/2020/003; European Regional Development Fund, ERDF: CZ.1.05/2.1.00/19.037

Cooking oil and fat waste management : a review of the current state

Waste management is a continuously growing area connecting industry and academia nowadays. There are, however, still many issues and sub-areas requiring in-depth analysis and development of new approaches and solutions. One of them is the management of waste cooking oils and fats originated from households. While most of the solid waste is addressed within the circular economy proposal, the fat waste recycling consideration is still in its early stage, as the relevant European Union legislation has only recently been adopted. Disposing of oil and fat waste in a traditional way often leads to sewage problems. However, if utilised, this waste may be a valuable source of energy and material recovery. While maintaining the reverse supply chain viewpoint (from waste producers through the collection to treatment and utilisation), this paper reviews the current state of the waste cooking oils and fats management and identifies the drawbacks in existing collection and handling methods. The review shows that current approaches have shortcoming mainly due to poorly organised collection container networks and provides insights into the importance of effective prognosis of the cooking oil and fat waste whose collection and handling is still in the development. The Czech Republic current state and the future outlook is discussed and commented with regards to the expected growth of production and separation of these wastes. The review stresses the challenges of establishing and coordinating the supply chain segments, which will benefit from applying mathematical modelling to facilitate decision-making.publishedVersio

Cooking oil and fat waste management: A review of the current state

Waste management is a continuously growing area connecting industry and academia nowadays. There are, however, still many issues and sub-areas requiring in-depth analysis and development of new approaches and solutions. One of them is the management of waste cooking oils and fats originated from households. While most of the solid waste is addressed within the circular economy proposal, the fat waste recycling consideration is still in its early stage, as the relevant European Union legislation has only recently been adopted. Disposing of oil and fat waste in a traditional way often leads to sewage problems. However, if utilised, this waste may be a valuable source of energy and material recovery. While maintaining the reverse supply chain viewpoint (from waste producers through the collection to treatment and utilisation), this paper reviews the current state of the waste cooking oils and fats management and identifies the drawbacks in existing collection and handling methods. The review shows that current approaches have shortcoming mainly due to poorly organised collection container networks and provides insights into the importance of effective prognosis of the cooking oil and fat waste whose collection and handling is still in the development. The Czech Republic current state and the future outlook is discussed and commented with regards to the expected growth of production and separation of these wastes. The review stresses the challenges of establishing and coordinating the supply chain segments, which will benefit from applying mathematical modelling to facilitate decision-making. © 2020, AIDIC Servizi S.r.l

Cross-linked gelatine by modified dextran as a potential bioink prepared by a simple and non-toxic process

Essential features of well-designed materials intended for 3D bioprinting via microextrusion are the appropriate rheological behavior and cell-friendly environment. Despite the rapid development, few materials are utilizable as bioinks. The aim of our work was to design a novel cytocompatible material facilitating extrusion-based 3D printing while maintaining a relatively simple and straightforward preparation process without the need for harsh chemicals or radiation. Specifically, hydrogels were prepared from gelatines coming from three sources-bovine, rabbit, and chicken-cross-linked by dextran polyaldehyde. The influence of dextran concentration on the properties of hydrogels was studied. Rheological measurements not only confirmed the strong shear-thinning behavior of prepared inks but were also used for capturing cross-linking reaction kinetics and demonstrated quick achievement of gelation point (in most cases < 3 min). Their viscoelastic properties allowed satisfactory extrusion, forming a self-supported multi-layered uniformly porous structure. All gelatin-based hydrogels were non-cytototoxic. Homogeneous cells distribution within the printed scaffold was confirmed by fluorescence confocal microscopy. In addition, no disruption of cells structure was observed. The results demonstrate the great potential of the presented hydrogels for applications related to 3D bioprinting.RP/CPS/2022/001; CZ.02.2.69/0.0/0.0/19_073/0016941; Ministerstvo Školství, Mládeže a Tělovýchovy, MŠMT: CZ.1.05/2.1.00/19.0376, RP/CPS/2022/003; Grantová Agentura České Republiky, GA ČR: 20-28732SMinistry of Education, Youth and Sports of the Czech republic-DKRVO [RP/CPS/2022/003, RP/CPS/2022/001]; project OP RDE Junior Grants of TBU in Zlin [CZ.02.2.69/0.0/0.0/19_073/0016941]; CEBIA-Tech Instrumentation [CZ.1.05/2.1.00/19.0376]; Czech Science FoundationGrant Agency of the Czech Republic [20-28732S