Comparison of selected parameters in Barbora Krejčíkova's matches at the French Open 2021

Title: Comparison of selected parameters in Barbora Krejčíkova's matches at the French Open 2021 Objectives: The main objective of this thesis is comparing the selected parameters in each Barbora Krejčíkova's match at the French Open 2021. I compare following parameters: the pace of the game, the count of the selected rallies (after serve from the left side and from the right side, after first serve and second serve), the count of winners in the selected rallies and the place from where the winner was played (baseline or net). Methods: The main method in this thesis is notational system analyses. It is an indirect observation of video records. The records contain all seven matches with Barbora Krejčíková at the French Open 2021. The monitored variables are the pace of the game (count as rally time divided by number of shots in that rally), how many of selected rallies was played after: serve from left side, serve from right side, first serve, second serve and count of winners from the selected rallies played from the baseline or from the net. I select the rally in case that there are four or more shots played in the rally. Results: In the three set matches Krejčíková is less points ahead than in the two set matches. In the first rounds the percentage of rallies that I can select increase with each...Název: Porovnání vybraných parametrů v utkáních Barbory Krejčíkové na French Open 2021 Cíle: Hlavním cílem této práce je porovnat vybrané parametry v každém utkání tenistky Barbory Krejčíkové na French Open 2021. Porovnávají se následující proměnné: tempo hry, počet vybraných rozeher (odehraných po podání z levé strany a z pravé strany, po prvním a druhém podání), počet vítězných úderů dané hráčky ve vybraných rozehrách a místo odkud byly zahrány (oblast základní čáry nebo sítě). Metody: Hlavní používanou metodou v této práci je notační systémová analýza. Jedná se o nepřímé pozorování videozáznamů všech 7 utkání Barbory Krejčíkové na French Open 2021. Proměnnými, které jsem sledoval, byly tempo hry (vypočítané podílem množství úderů v rozehře a času rozehry), počet vybraných rozeher po podání z pravé, levé stany dále po prvním, druhém podání a počet vítězných úderů v oněch vybraných rozehrách, přičemž jsem zaznamenával, zda byly zahrány z oblasti základní čáry či z oblasti okolo sítě. Rozehru jsem vybral v případě, že obsahovala čtyři a více odehraných úderů včetně podání a riternu. Výsledky: U třísetových zápasů je rozdíl mezi vyhranými body Krejčíkové a její soupeřky menší než u dvousetových zápasů. V prvních kolech utkání se poměr rozeher splňujících požadavky ku celkovému počtu rozeher zvyšuje....Katedra sportovních herDepartment of Sport GamesFaculty of Physical Education and SportFakulta tělesné výchovy a sport

Судово-психологічна експертиза в цивільному процесі

У статті розкрито правові та практичні проблеми проведення судово-психологічних експертиз у цивільному процесі. Виділено категорії справ, у ході провадження яких призначення психологічної експертизи є обов’язковим (In the article law and practical problems of carrying out judicial and psychological investigation in civil process have been exposed. The categories of cases demanding psychological investigation have been distinguished

Catalytic Properties of 3D Graphene-Like Microporous Carbons Synthesized in a Zeolite Template

[EN] The inherent properties of a single atomic carbon layer in graphene offer opportunities for the creation of catalytically active centers tailored on a molecular level on a support with high thermal stability and very high specific surface area. We demonstrate that organization of the two-dimensional system of the carbon layer into three-dimensional (3D) graphene-like catalytic materials with the connectivity of a pore network providing good accessibility to the active centers allows the preparation of catalytic materials that exploit the properties of graphene. In this study, 3D graphene-like microporous carbons, denoted as)6 beta-carbon and Y-carbon, were synthesized by nanocasting of beta (*BEA) and faujasite (FAU) zeolite templates. Structural analyses show that the materials are characterized by 3D-assembled and highly stable single-atom graphene an open porous system resembling the regular channel system of the zeolites with a specific surface area comparable to the surface area of graphene. The materials effectively catalyze the hydrogenation of alkenes, alkynes, and cycloalkenes into the corresponding alkanes and cycloalkanes. The materials facilitate catalytic intramolecular rearrangements, including the selective isomerization of double bonds and branching of linear chains, as well as stereoselective isomerization of unsaturated hydrocarbons. layers that formThis work was supported by the Grant Agency of the Czech Republic under project No. 15-12113S. The authors acknowledge the assistance provided by the Research Infrastructures NanoEnviCz (Project No. LM2015073) and Pro-NanoEnviCz (Project No. CZ.02.1.01/0.0/0.0/16_013/0001821), supported by the Ministry of Education, Youth and Sports of the Czech Republic.Sazama, P.; Pastvova, J.; Rizescu, C.; Tirsoaga, A.; Parvulescu, VI.; García Gómez, H.; Kobera, L.... (2018). Catalytic Properties of 3D Graphene-Like Microporous Carbons Synthesized in a Zeolite Template. ACS Catalysis. 8(3):1779-1789. https://doi.org/10.1021/acscatal.7b04086S177917898

Shortest path based decision making using probabilistic inference

Despite the extensive use of boron-modified phenol–formaldehyde polymers as insulating materials in soft magnetic composites (SMCs), the structure and arrangement of the inorganic cross-linking units in these systems have not been fully elucidated. To clarify the structure, configuration, and distribution of the boron cross-links in these materials, phenol–formaldehyde resins modified by boric acid were synthesized and characterized using advanced multiple-quantum ¹¹B–¹¹B MAS NMR correlation techniques combined with the quantum chemical geometry optimizations and the subsequent ¹¹B NMR chemical shielding calculations. The analyses of the resulting spectra revealed a well-evolved (high-density) phenol–formaldehyde polymer network additionally strengthened by nitrogen and boron cross-links. The boron-based cross-links were attributed to monoester (ca. 10%) and diester (ca. 90%) complexes (six-membered spirocyclic borate anions) with strictly tetrahedral coordination (B^IV). During the thermal treatment, the monoester and diester borate complexes underwent additional transformation in which the spirocyclic borate anions were more tightly incorporated into the polymer matrix via additional <i>N</i>-type (amino) cross-links. A ¹¹B–¹¹B double-quantum correlation MAS NMR experiment revealed that the majority of the monoester and diester borate complexes (ca. 80%) were uniformly distributed within and effectively isolated by the polymer matrix, with an average ¹¹B···¹¹B interatomic distance greater than 6 Å. A non-negligible part of the spirocyclic borate anion complexes (ca. 20%), however, existed in pairs or small clusters in which the average ¹¹B···¹¹B interatomic distance was less than 5.5 Å. In addition, the formation of homodimers (diester–diester) was demonstrated to be preferred over the formation of heteroclusters (monoester–diester)

How Photogenerated I₂ Induces I-Rich Phase Formation in Lead Mixed Halide Perovskites

Bandgap tunability of lead mixed halide perovskites (LMHPs) is a crucial characteristic for versatile optoelectronic applications. Nevertheless, LMHPs show the formation of iodide-rich (I-rich) phase under illumination, which destabilizes the semiconductor bandgap and impedes their exploitation. Here, it is shown that how I2, photogenerated upon charge carrier trapping at iodine interstitials in LMHPs, can promote the formation of I-rich phase. I2 can react with bromide (Br−) in the perovskite to form a trihalide ion I2Br− (Iδ−-Iδ+-Brδ−), whose negatively charged iodide (Iδ−) can further exchange with another lattice Br− to form the I-rich phase. Importantly, it is observed that the effectiveness of the process is dependent on the overall stability of the crystalline perovskite structure. Therefore, the bandgap instability in LMHPs is governed by two factors, i.e., the density of native defects leading to I2 production and the Br− binding strength within the crystalline unit. Eventually, this study provides rules for the design of chemical composition in LMHPs to reach their full potential for optoelectronic devices.</p

How Photogenerated I2 Induces I-Rich Phase Formation in Lead Mixed Halide Perovskites

Bandgap tunability of lead mixed halide perovskites (LMHPs) is a crucial characteristic for versatile optoelectronic applications. Nevertheless, LMHPs show the formation of iodide-rich (I-rich) phase under illumination, which destabilizes the semiconductor bandgap and impedes their exploitation. Here, it is shown that how I2 , photogenerated upon charge carrier trapping at iodine interstitials in LMHPs, can promote the formation of I-rich phase. I2 can react with bromide (Br- ) in the perovskite to form a trihalide ion I2 Br- (Iδ- -Iδ+ -Brδ- ), whose negatively charged iodide (Iδ- ) can further exchange with another lattice Br- to form the I-rich phase. Importantly, it is observed that the effectiveness of the process is dependent on the overall stability of the crystalline perovskite structure. Therefore, the bandgap instability in LMHPs is governed by two factors, i.e., the density of native defects leading to I2 production and the Br- binding strength within the crystalline unit. Eventually, this study provides rules for the design of chemical composition in LMHPs to reach their full potential for optoelectronic devices

Understanding the socio-economic causes of deforestation: a global perspective

IntroductionThis paper investigates the links between deforestation and key economic, social, environmental, and geographical variables. We focus on per capita GDP, total forest cover, and the population across a diverse sample of countries from five continents for the last three decades.MethodsThis study utilizes a regression model using panel data to show the impact of key economic, and social variables on deforestation. Also, set of dummy variables is introduced in the paper. To enable the investigation, we use a set of dummies to capture their influence. The random effect specifications are used in this investigation. The research focuses on a period ranging from 1990 to 2020.ResultsResults show how different socio-economic variables influence deforestation. For example, disruptive events like the COVID-19 pandemic and the financial crisis had a negative effect on forest area development across all models. GDP per capita has different impact depending on the size of a country. Former colonies seem to have more deforestation.ConclusionsThe global environmental challenges posed by human activities and their impact on the state of forest have become increasingly evident. It is necessary to undertake policy and governance reforms to establish a solid legal framework, strengthen enforcement mechanisms, and foster transparency and accountability. The promotion of sustainable agriculture and agroforestry practices can substantially alleviate pressure on forests. Furthermore, it is necessary to mitigate disruptive events like pandemics by establishing specific strategies and creating contingency plans

Bacteria in milk from anterior and posterior mammary glands in sows affected and unaffected by postpartum dysgalactia syndrome (PPDS)

<p>Abstract</p> <p>Background</p> <p>The performance of piglet weight gain is strongly dependent on the sow's ability to meet the demand for adequate milk. Postparturient disorders, especially those subsumed under the term postpartum dysgalactia syndrome (PPDS), can alter or reduce the milk production sensitively, resulting in starving piglets. The aim of this study was to gather further information about the prevalence of different bacterial species in the anterior and posterior mammary glands of sows with respect to the clinical appearance of PPDS.</p> <p>Methods</p> <p>In this study, the health status of 56 sows after farrowing was determined with special regard to mastitis and dysgalactia. Pooled milk samples from anterior and posterior glands were taken from both affected and non-affected animals and analysed bacteriologically for the presence of a wide spectrum of different pathogens.</p> <p>Results</p> <p>Mainly <it>Escherichia coli</it>, staphylococci and streptococci were detected in high percentages but without significant differences in healthy and diseased animals and anterior and posterior glands. However, the large percentages of coliform bacteria suggested a transmission route via faecal contamination.</p> <p>Conclusion</p> <p>In this study, the prevalence of different bacteria in anterior and posterior glands in PPDS positive and negative sows was analysed. No significant differences in bacteria of healthy and diseased sows were assessed. Therefore, the development of clinical PPDS and actual infection seems to be largely dependant on individual resistance in single sows.</p