Sebastian Rehberg, Sandra Frank, Vladimír Černý, Radek Cihlář, Rainer Borgstedt, Gíanni Biancofiore, Fabio Guarracino, Andreas Schober, Helmut Trimmel, Thomas Pernerstorfer, Christian Siebers, P Dostál, Andrea Morelli, Michael Joannidis, Ingrid Pretsch, Christian Fuchs, Tim Rahmel, Matej Podbregar, Éva Duliczki, Kadri Tamme, Martin Unger, Jan Sus, Christoph Klade, Kurt Krejcy, Nairi Kirchbaumer-Baroian, Günther Krumpl, František Duška,
Excessive tachycardia in resuscitated septic shock patients can impair hemodynamics and worsen patient outcome. We investigated whether heart rate (HR) control can be achieved without increased vasopressor requirements using the titratable highly selective, ultra-short-acting β1-blocker landiolol.
Tópico(s): Sepsis Diagnosis and Treatment
2024 - Springer Science+Business Media | Intensive Care Medicine
Jakub Černý, Radek Pokorný, Monika Vejpustková, Vít Šrámek, Pavel Bednář,
Tópico(s): Plant responses to elevated CO2
2020 - Springer Science+Business Media | International Journal of Biometeorology
Synthesis gas originating from alternative feedstocks such as biomass, coal, or natural gas can become an important source of hydrocarbon-based automotive fuels in the future. Fischer–Tropsch synthesis (FTS) affords these hydrocarbons, but upgrading of the primary FTS products is unavoidable. One option is to use the fluid catalytic cracking (FCC) process to convert FTS waxes into a wide range of products. To investigate the impact of FTS wax addition to a conventional FCC feedstock on product yields ...
Tópico(s): Catalysts for Methane Reforming
2011 - American Chemical Society | Industrial & Engineering Chemistry Research
Radek Černý, Martin Kubů, David Kubička,
Biomass-derived oxygenates are promising future feedstocks for the chemical industry. Fluid catalytic cracking of these feedstocks has the advantage of enabling their deoxygenation without external hydrogen consumption. Six model feedstocks have been tested using the microactivity test with the aim to describe the impact of the feedstock structure on its conversion and product distribution. It has been shown that saturated alcohols are the feedstocks yielding the most valuable iso-alkanes. Fatty ...
Tópico(s): Biodiesel Production and Applications
2012 - Elsevier BV | Catalysis Today
Alfonso Yépez, José Miguel Hidalgo Herrador, Antonio Pineda, Radek Černý, Petr Jíša, A. Garcı́a, Antonio A. Romero, Rafael Luque,
The hydroconversion of cinnamaldehyde was studied using a simple and efficient hydrogen-donating protocol catalyzed by mechanochemically synthesized bifunctional Pd/Al-SBA-15 catalysts.
Tópico(s): Nanomaterials for catalytic reactions
2014 - Royal Society of Chemistry | Green Chemistry
José Miguel Hidalgo Herrador, Michal Zbuzek, Radek Černý, Petr Jíša,
Abstract Due to the growing restrictions on the content of aromatic compounds by the European legislation in motor fuels and at the same time the need for higher quality fuels (minimizing the presence of contaminants and hazardous products to health), it has become necessary to increase processes that can maximize the number of octane in gasoline. This manuscript is aimed to provide current trends and processes related to isomerization, alkylation and etherification processes to improve gasolines ...
Tópico(s): Catalysis and Hydrodesulfurization Studies
2013 - De Gruyter Open | Open Chemistry
José Miguel Hidalgo Herrador, Michal Zbuzek, Radek Černý, Petr Jíša,
Abstract The original version of the article was published in Cent. Eur. J. Chem. 12(1) (2014) pp. 1–13. Unfortunately, the original version of this article contains some mistakes in the text: The caption of Figure 7. A fixed bed unit converted to the UOP Par-Isom Process™Par Isom Process should be written as Par-Isom Process™everywhere in the text LCC should be written as LLC
Tópico(s): Catalytic Processes in Materials Science
2013 - De Gruyter Open | Open Chemistry
Dalibor Kaucký, Zdeněk Sobalı́k, José Miguel Hidalgo Herrador, Radek Černý, Oleg Bortnovský,
Selected Pt/WO3-ZrO2 catalysts, promoted by Al, Si and Fe metal ions and isomorphously substituted into the zirconia framework, were studied and compared with their undoped equivalents as catalysts for C7 isomerization. They were characterized by XRD, UV–vis and TPD-TPR techniques. A mechanism was proposed for the positive dopant effect on the catalyst activity.
Tópico(s): Catalytic Processes in Materials Science
2016 - Elsevier BV | Journal of Molecular Catalysis A Chemical
Michaela Kozlovská, Radek Cerny, P. Otahal,
A collection of personal radiation shielding protective clothing, suitable for use in case of accidents in nuclear facilities or radiological emergency situations involving radioactive agents, was gathered and tested at the Nuclear Protection Department of the National Institute for Nuclear, Chemical and Biological Protection, Czech Republic. Attenuating qualities of shielding layers in individual protective clothing were tested via spectra measurement of x and gamma rays, penetrating them. The ...
Tópico(s): Nuclear Physics and Applications
2015 - Lippincott Williams & Wilkins | Health Physics
Zuzana Vondráková, Alena Trávníčková, Jiří Malbeck, D. Haisel, Radek Černý, Milena Cvikrová,
Tópico(s): Flowering Plant Growth and Cultivation
2020 - Springer Science+Business Media | European Food Research and Technology
Aleš Vráblík, Romana Velvarská, K. Štěpánek, Martin Pšenička, José Miguel Hidalgo Herrador, Radek Černý,
Abstract The cold filtration plugging point (CFPP) is the method most commonly applied to characterize the low‐temperature behavior of diesel and its components. However, this method is time‐consuming and does not have good repeatability, especially for samples with very low CFPP values like kerosene, light cycle oil, etc. Three new models for CFPP prediction were developed and compared: a combined density and distillation curve, differential scanning calorimetry, and near‐infrared. A set of 133 ...
Tópico(s): Heat transfer and supercritical fluids
2019 - Wiley | Chemical Engineering & Technology
Aleš Vráblík, Dominik Schlehöfer, Karolína Jaklová, José Miguel Hidalgo Herrador, Radek Černý,
Post the enforcement of the Global Sulphur Cap 2020, large amounts of marine fuel have been produced as a mixture of two or more components to achieve a sulfur level of less than 0.5 wt %. This has led to the wider use of diluents or cutter stocks from different origins to comply with the quality requirements of the ISO 8217 standard. These can often be bio- or alternative components with a lower level of stability. This makes it crucial to select components that are compatible and form a homogeneous ...
Tópico(s): Petroleum Processing and Analysis
2022 - American Chemical Society | ACS Omega
Jakub Černý, Radek Pokorný, Pavel Haninec, Pavel Bednář,
Accurate estimations of leaf area index (LAI), defined as half of the total leaf surface area per unit of horizontal ground surface area, are crucial for describing the vegetation structure in the fields of ecology, forestry, and agriculture. Therefore, procedures of three commercially used methods (litter traps, needle technique, and a plant canopy analyzer) for performing LAI estimation were presented step-by-step. Specific methodological approaches were compared, and their current advantages, controversies, ...
Tópico(s): Plant Water Relations and Carbon Dynamics
2019 - MyJOVE | Journal of Visualized Experiments
Viktor Černý, Martin Hájek, Radek Čmejla, Jaroslav Brůžek, R Brdička,
Background: No mitochondrial DNA (mtDNA) sequences from Chadic-speaking peoples have yet been reported, even though these populations inhabit a vast territory from eastern Nigeria to central Chad. This paper deals with the mtDNA sequences of four Central Chadic populations (Hide, Kotoko, Mafa and Masa) from northern Cameroon, biological samples from which were collected during anthropological research in the area of their homeland.Objective: The main goals of this article are to report new mtDNA sequences ...
Tópico(s): Genetic diversity and population structure
2004 - Informa | Annals of Human Biology
Jana Elsterová, Jiří Černý, Jana Müllerová, Radek Šíma, Stephen Coulson, Erlend Lorentzen, Hallvard Strøm, Libor Grubhoffer,
The tick species Ixodes uriae, parasitizing seabirds in the Arctic, may transmit many pathogens including various arboviruses, Borrelia spirochetes and Babesia apicomplexans. These pathogens may pose an important additional stress to seabirds, which are already stressed by environmental changes such as pollutants and decreased food availability. Here, we present the results of the first screening for arboviruses of the genera Flavivirus, Alphavirus, Orthobunyavirus, Phlebovirus and Orbivirus, as ...
Tópico(s): Vector-Borne Animal Diseases
2015 - Wiley | Polar Research
Jakub Černý, Pavel Haninec, Radek Pokorný,
Tópico(s): Remote Sensing in Agriculture
2018 - Springer Science+Business Media | Journal of Forestry Research
José Miguel Hidalgo Herrador, Dalibor Kaucký, Oleg Bortnovský, Radek Černý, Zdeněk Sobalı́k,
An active tungstated zirconia catalyst was developed with the aim of isomerising industrial feedstocks, and presented stable activity with an increase of the R.O.N. of 14 at 225 °C.
Tópico(s): Catalytic Processes in Materials Science
2015 - Royal Society of Chemistry | RSC Advances
Aleš Vráblík, José Miguel Hidalgo Herrador, Radek Černý,
The stability of fuel oils could be affected by sediments and sludge, which may block filters and lines in the feeding pipes and engines. The development of a reliable method for the fuel oil stability assessment is still a hot topic. The presented method is based on the Spot test according to ASTM D 4740 but the spot is visualized, modified by software and converted into RGB histograms. The histograms provide the parameters necessary for the calculation of the V-value. This parameter was effectively ...
Tópico(s): Hydrocarbon exploration and reservoir analysis
2017 - Elsevier BV | Fuel
José Miguel Hidalgo Herrador, Martin Pšenička, J. Horáček, Zdeněk Tišler, Aleš Vráblík, Radek Černý, Martyna Murat,
Abstract Light cycle oil (LCO) and waste sunflower cooking oil (WSO) were co‐processed with the aim of obtaining more environmentally friendly fuels. Partial hydrogenation of naphthalene was also investigated as a model reaction. Commercial NiW/SiO 2 ‐Al 2 O 3 , as a reference catalyst, and NiW/(pseudoboehmite + SBA‐15), as a new research catalyst, were tested. Liquid products were analyzed by simulated distillation, elemental analysis, and FTIR spectroscopy. Elemental analysis indicated higher efficiency ...
Tópico(s): Catalysis for Biomass Conversion
2018 - Wiley | Chemical Engineering & Technology
Krzysztof Błażejowski, Marta Wójcik-Wiśniewska, Wiktoria Baranowska, Przemysław Ostrowski, Radek Černý, Petr Jíša,
Fatigue cracking is one of the most important phenomena connected to durability of asphalt pavements. The fatigue resistance of asphalt pavements depends on many factors such as asphalt mixture composition and binder properties. Also temperature of asphalt pavement is important, what is directly related to viscoelastic nature of the bituminous binder. The fatigue cracks may occur within the bitumen (cohesive cracking) or at the bitumen-aggregate interface (adhesion cracking). The cohesive cracking ...
Tópico(s): Geotechnical Engineering and Underground Structures
2019 - Springer Nature | Lecture notes in civil engineering
Héctor de Paz Carmona, Aleš Vráblík, José Miguel Hidalgo Herrador, Romana Velvarská, Radek Černý,
Effects of animal fat addition in hydrotreated gas oil.
Tópico(s): Petroleum Processing and Analysis
2021 - Royal Society of Chemistry | Sustainable Energy & Fuels
Romana Velvarská, Aleš Vráblík, José Miguel Hidalgo Herrador, Radek Černý,
The properties of diesel fuels must be controlled during industrial production. Significant diesel additives are cold-flow improvers that affect fuel properties at low temperature properties of diesel fuels. Improvers are added to fuels during processing in order to lower their cold filter plugging point (CFPP). In order to meet the European standard (EN 590), large quantities of cold-flow improvers may be required, increasing the cost of processing. In this study, near-infrared (NIR) spectroscopy ...
Tópico(s): Fault Detection and Control Systems
2020 - Elsevier BV | Infrared Physics & Technology
Jan Jenčík, Vladimír Hönig, Michal Obergruber, Jiří Hájek, Aleš Vráblík, Radek Černý, Dominik Schlehöfer, Tomáš Herink,
This paper focuses on the evaluation of the fuel properties of Fischer–Tropsch diesel blends with conventional diesel. Incorporating this advanced fuel into conventional diesel production will enable the use of waste materials and non-food materials as resources, while contributing to a reduction in dependence on crude oil. To evaluate the suitability of using Fischer–Tropsch diesel, cetane number, cetane index, CFPP, density, flash point, heat of combustion, lubricity, viscosity, distillation curve, ...
Tópico(s): Heat transfer and supercritical fluids
2021 - Multidisciplinary Digital Publishing Institute | Materials
Jakub Černý, Radek Pokorný, Pavel Haninec, Pavel Bednář,
Accurate estimations of leaf area index (LAI), defined as half of the total leaf surface area per unit of horizontal ground surface area, are crucial for describing the vegetation structure in the fields of ecology, forestry, and agriculture. Therefore, procedures of three commercially used methods (litter traps, needle technique, and a plant canopy analyzer) for performing LAI estimation were presented step-by-step. Specific methodological approaches were compared, and their current advantages, controversies, ...
Tópico(s): Plant Water Relations and Carbon Dynamics
2019 - MyJOVE | Journal of Visualized Experiments
Viktor Černý, Martin Hájek, M. Bromova, Radek Čmejla, Issa Diallo, R Brdička,
Despite the large size of the contemporary nomadic Fulani population (roughly 13 million people), the genetic diversity and degree of differentiation of Fulanis compared to other sub-Saharan populations remain unknown. We sampled four Fulani nomad populations (n=186) in three countries of sub-Saharan Africa (Chad, Cameroon, and Burkina Faso) and analyzed sequences of the first hypervariable segment of the mitochondrial DNA. Most of the haplotypes belong to haplogroups of West African origin, such as ...
Tópico(s): Rangeland Management and Livestock Ecology
2006 - Wayne State University Press | Human Biology
José Miguel Hidalgo Herrador, Aleš Vráblík, Petr Jíša, Radek Černý, Jana Hamerníková,
Tópico(s): Biodiesel Production and Applications
2015 - Springer Science+Business Media | Chemical Papers
Zuzana Vondráková, Jiří Malbeck, Alena Trávníčková, Radek Černý, Milena Cvikrová,
Tópico(s): Plant Physiology and Cultivation Studies
2020 - Springer Science+Business Media | Acta Physiologiae Plantarum
Radek Horváth, Jan Černý, Jaroslav Benedı́k, J Hökl, Ivana Jelı́nková, Jaroslav Benedı́k,
Tópico(s): Herpesvirus Infections and Treatments
2000 - Elsevier BV | Journal of Clinical Virology
José Miguel Hidalgo Herrador, Dalibor Kaucký, Oleg Bortnovský, Radek Černý, Zdeněk Sobalı́k,
Tópico(s): Catalysis and Oxidation Reactions
2014 - Springer Science+Business Media | Monatshefte für Chemie - Chemical Monthly
Michal Zbuzek, Aleš Vráblík, Vratislav Tukač, Martin Veselý, A. Prokešová, Radek Černý,
The research was focused on the verification of the accelerated testing method for the testing of long term catalytic activity. The verification was carried out with two types (CoMo/Al2O3 and NiW/Al2O3) of commercial HDS catalysts. The catalysts were also placed into the industrial reactor and allowed to run for approximately 16 months under the industrial conditions. Then the residual activity of the catalysts was determined. The results from the accelerated and the industrial deactivation were ...
Tópico(s): Catalytic Processes in Materials Science
2015 - Elsevier BV | Catalysis Today