Příspěvky z konference

Nejnovější přírůstky:
2021-09-12
00:00
Interdisciplinární vědecké týmy při Československé akademii věd a Univerzitě Karlově v 60. letech
Hoppe, Jiří
Konferenční příspěvek přináší stručný přehled o genezi a činnosti čtyř mezioborových vědeckých týmů (Šikova týmu, Richtova týmu, Machoninova týmu a Mlynářova týmu), které výrazně spoluutvářely společenskou i politickou dynamiku v ČSSR v 60. letech 20. století. Ukazuje, jak tyto týmy podporovaly změny a inovace ve způsobu uplatňování vedoucí úlohy KSČ, jak nově analyzovaly parametry a limity stávajícího státního zřízení a jak promýšlely a inspirativně modelovaly alternativy jeho budoucnosti.

Úplný záznam
2021-09-05
00:00
Enzymatic detoxification of cyanide using cyanide hydratases
Sedova, Anastasia ; Rucká, Lenka ; Glozlová, Michaela ; Novotný, Petr ; Martínková, Ludmila ; Bojarová, Pavla
Cyanide, a strong chelator of metals in vital enzymes and proteins, is very toxic for most living organisms. Wastewaters from the mining, metallurgical and chemical industries contain significant concentrations of free cyanide. Though it can be largely eliminated by physicochemical methods, these processes may in turn lead to the formation of other waste. In addition, no effective methods have been found to neutralize cyanide spills coming from industrial accidents. The use of enzymes to remove cyanide is an attractive alternative, which is environmentally friendly and applicable to high cyanide concentrations. Cyanide hydratases (CynHs) are of considerable interest for the decomposition of hazardous cyanide wastes. Here we investigate the biochemical properties of new CynHs from Stereum hirsutum and Exidia glandulosa, it is of fundamental importance to preserve the enzyme activity at alkaline pH as cyanide waste is stored under these conditions.

Úplný záznam
2021-08-22
00:07
Jan Eisner a počátky české profesionální archeologie
Starcová, Marcela
Archeolog Jan Eisner působil na Slovensku 20 let (1919-1939). Vedl mnoho záchranných a systematických terénních výzkumů a věnoval velkou pozornost ochraně památek na Slovensku. Je považován za učitele první generace slovenských archeologů.

Úplný záznam
2021-08-22
00:07
Modal analysis of a container with measuring equipment for space mission
Zolotarev, Igor ; Bula, Vítězslav
This paper continues investigations of some measuring equipment for space mission. The frequency-modal properties a container with several slots and measured desks are studied. The natural frequencies and corresponded modes obtained using measuring methods are presented for several combinations of the container components.

Úplný záznam
2021-08-22
00:07
Numerical simulation of dynamic loading of a test blade in forced torsional vibration
Šidlof, P. ; Vomáčko, V. ; Lepičovský, Jan ; Šimurda, David ; Štěpán, M. ; Luxa, Martin
Within a new project focused on blade flutter research, building on previous experience with the NASA Transonic Flutter Cascade facility, static blade cascade and airfoil flutter experiments realized in cooperation between the Institute of Thermomechanics and Technical University of Liberec, a new test facility is under development for the investigation of high subsonic and transonic flow in a blade cascade under forced torsional oscillation. Apart from aerodynamic loading of the blades, the oscillating blade will be exposed to significant structural stresses due to the highfrequency torsional vibration. In order to avoid structural integrity issues from high-cycle fatigue, a numerical simulation of the stress and displacement of the blade was realized. Regions where equivalent stress reaches maximum values were identified, and elastic deformations were computed. The limits in oscillation amplitude and frequency for the safe operation of the experimental setup were discussed.

Úplný záznam
2021-08-08
00:05
Catalytic Wet Air Oxidation of Antibiotics over Supported Platinum on Different Supports Fractions Based CeO2 and ZrO2.
Bourassi, Mahdi
We have investigated catalytic oxidation of model antibiotics solutions, mainly based on Tetracycline and Sulfamethoxazole for their different composition and presence in the environment.
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Úplný záznam
2021-08-08
00:05
Separation of Racemic D,L-Tryptophan Using Chiral Membranes.
Čížek, Jan
The presented results open a discussion on selectivity towards L-Tryptophan and other enantiomerically pure biochemical molecules and suggest direction for further research.
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Úplný záznam
2021-08-08
00:05
Removal of Contaminants from Water.
Spáčilová, Markéta
This study deals with commonly used plastics; polystyrene (PS), polytetrafluorethylene (PTFE), polyamide (PA), polyethylene glycol terephthalate (PET), polyethylene (PE), etc. Microplastic samples were prepared by abrasion from commonly available plastics to simulate real microplastic occurrence in the environment. Prepared samples were characterized by scanning electron microscopy (SEM), Raman spectroscopy and infrared spectroscopy (IR) to obtain their fingerprints. These characteristics can be applied as standards for characterization of real microplastics.
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Úplný záznam
2021-08-08
00:05
Electrocoagulation of Microalga Chlorella vulgaris in Laboratory and Bench Scale.
Lucáková, Simona
In our laboratory we employed the process of electroflocculation with iron sacrificial anode leading to flocs formation in algae suspension and keeping the separated biomass food-grade at the same time.
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Úplný záznam
2021-08-08
00:05
High Temperature Removal of Halogenated Compounds from Pyrolysis of Waste Plastic Polymers.\n
Šrámek, Vít
In this research the performance of selected adsorbents was tested in laboratory apparatus under model conditions with the mixture of\nHCl and simple non-condensing hydrocarbons.
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Úplný záznam