Number of found documents: 7278
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Study of Metabolism of Synthetic Cannabinoids. Electrochemical Properties of JWH-018
Obluková, Michaela; Sokolová, Romana; Čabala, R.
2018 - English
In the recent years, many new substances have appeared in the drug market, which are abused for their psychoactive effect. They serve as alternative to classical drugs (heroin, cocaine, ecstasy) due to their legal status. The great concern is the ineffectiveness of the current methods of toxicological screening of biological samples to identify these new compounds. It is essential to know the metabolism pathway of these psychoactive substances for a development of a new efficient method for their detection. This report is devoted to understanding of oxidation and reduction mechanism of JWH-018 and JWH-250 by means of cyclic voltammetry and to identification of their redox products. Keywords: synthetic cannabinoids; metabolism; cyclic voltammetry Available at various institutes of the ASCR
Study of Metabolism of Synthetic Cannabinoids. Electrochemical Properties of JWH-018

In the recent years, many new substances have appeared in the drug market, which are abused for their psychoactive effect. They serve as alternative to classical drugs (heroin, cocaine, ecstasy) due ...

Obluková, Michaela; Sokolová, Romana; Čabala, R.
Ústav fyzikální chemie J. Heyrovského, 2018

Determination of Optical Purity of Arylpropanoic Acids.
Cuřínová, Petra; Holakovský, R.; Izák, Pavel; Hájek, P.; Janků, K.
2018 - English
Keywords: arylpropanoic acids; metabolism; nmr spectroscopy Available in a digital repository NRGL
Determination of Optical Purity of Arylpropanoic Acids.

Cuřínová, Petra; Holakovský, R.; Izák, Pavel; Hájek, P.; Janků, K.
Ústav chemických procesů, 2018

UNICELLULAR ALGA CHLORELLA AS A FEED SUPPLEMENT, CURRENT EXPERIENCE AND FUTURE PERSPECTIVES
Kotrbáček, V.; Doucha, Jiří; Kuchařová, V.; Doubek, J.
2017 - English
We studied the effect of Chlorella biomass as a feed supplement. In laying hens we found that diet supplemented with 1 % (i.e. 10 g/kg) of dry disintegrated heterotrophically grown Chlorella biomass significantly increased content of carotenoids in egg yolks of 8 experimental animals already after the first week of supplementation (P<0,01). Compared to 8 control hens these differences remained significantly higher until the end of the eight-week experiment. The average carotenoid concentration was 17,3 mu g per g of yolk in control group and 25,3 mu g per g of yolk in experimental animals (P<0,01). Autotrophically grown Chlorella was supplemented to the 30 gilts one month prior the expected first heat in a dose of 1,5 g per animal per day. These sows entered heat earlier and the number of pregnancy was higher in comparison to the 30 control animals. Other studies observed digestibility of selenium organically bound in Se-enriched Chlorella. The level of selenium in blood, colostrum and also tissues of new born piglets was determined. Group of 8 sows was supplemented with Se-enriched alga during the pregnancy and 3 days after parturition at a dose of 0,3 mg of selenium per 1 kg of feed. The same amount of selenium in the form of sodium selenite was administrated to the control group of 8 individuals. Organic form of selenium significantly increased concentration of Se in blood of sows and colostrum (P<0,05). Piglets born to supplemented sows had also significantly higher level of Se in heart, muscles and liver (P<0.01). The use of fresh Chlorella biomass produced outdoors on a dairy farm was experimentally tested. The liquid fresh biomass applied to dairy cows during the pregnancy at a dose of 15 g dry mass per cow increased the dry matter content in colostrum from 17,5 g per 100 ml of colostrum in control group to 20,5 g per 100 ml of colostrum in supplemented cows (P<0,05). Keywords: Chlorella; feed supplement; flue gas utilization Available at various institutes of the ASCR
UNICELLULAR ALGA CHLORELLA AS A FEED SUPPLEMENT, CURRENT EXPERIENCE AND FUTURE PERSPECTIVES

We studied the effect of Chlorella biomass as a feed supplement. In laying hens we found that diet supplemented with 1 % (i.e. 10 g/kg) of dry disintegrated heterotrophically grown Chlorella biomass ...

Kotrbáček, V.; Doucha, Jiří; Kuchařová, V.; Doubek, J.
Mikrobiologický ústav, 2017

Understanding the Principles of Diastereomeric Complexes of Chiral Urea Derivatives.
Cuřínová, Petra; Jakubec, Martin; Storch, Jan; Holakovský, R.
2017 - English
The main target of this work based on the NMR studies is to elucidate the structural principles which are responsible for the action of the chiral selectors at hand, and thus to be able to predict the new promising structures useful as NMR shift reagents. Keywords: NMR solvating agent; chiral recognition; diastereomeri complex Available in a digital repository NRGL
Understanding the Principles of Diastereomeric Complexes of Chiral Urea Derivatives.

The main target of this work based on the NMR studies is to elucidate the structural principles which are responsible for the action of the chiral selectors at hand, and thus to be able to predict the ...

Cuřínová, Petra; Jakubec, Martin; Storch, Jan; Holakovský, R.
Ústav chemických procesů, 2017

Usage of GP750 Gasifier for Combined Heat and Power Production.
Brynda, J.; Skoblia, S.; Pohořelý, Michael; Beňo, Z.; Moško, Jaroslav
2017 - English
Contribution presents experiences with long-therm operation of GP750 gasifiers in the combined heat and power plant Kozomín. Keywords: gasification; biomass; combined heat and power production Available in a digital repository NRGL
Usage of GP750 Gasifier for Combined Heat and Power Production.

Contribution presents experiences with long-therm operation of GP750 gasifiers in the combined heat and power plant Kozomín.

Brynda, J.; Skoblia, S.; Pohořelý, Michael; Beňo, Z.; Moško, Jaroslav
Ústav chemických procesů, 2017

Changes in Sub-micron Number Size Distributions at Czech Rural and Urban Background Stations in the Last Ten Years.
Zíková, Naděžda; Ondráček, Jakub; Wagner, Zdeněk; Ždímal, Vladimír
2017 - English
In this work, not only total concentrations are evaluated, but also particle number size distributions (PNSD) are compared in the last decade at the two stations, and possible explanations for the change in concentrations and PNSD changes are looked for. Additionally, also the change in the frequency and strength of the NPF events is evaluated.\n Keywords: SMPS; long-term measurement; rural background Available in a digital repository NRGL
Changes in Sub-micron Number Size Distributions at Czech Rural and Urban Background Stations in the Last Ten Years.

In this work, not only total concentrations are evaluated, but also particle number size distributions (PNSD) are compared in the last decade at the two stations, and possible explanations for the ...

Zíková, Naděžda; Ondráček, Jakub; Wagner, Zdeněk; Ždímal, Vladimír
Ústav chemických procesů, 2017

Do Invasive Alien Species Affect Diversity of Local Communities?
Kindlmann, Pavel; Honěk, A.; Martinková, Z.
2017 - English
Here we present results of simulation models to investigate the diversity dynamics in a theoretical system consisting of an "original" community of native species and an invasive alien species that invades this community, thus creating a "new" community. See Kindlmann et al. (2017) for full details of the simulations and results. Keywords: invasive species; local diversity Available at various institutes of the ASCR
Do Invasive Alien Species Affect Diversity of Local Communities?

Here we present results of simulation models to investigate the diversity dynamics in a theoretical system consisting of an "original" community of native species and an invasive alien species that ...

Kindlmann, Pavel; Honěk, A.; Martinková, Z.
Ústav výzkumu globální změny , 2017

Use of Water-Modified Supercritical Carbon Dioxide for Direct Preparation of CrystallineMonolithic TiO2 Aerogels.
Cerhová, Marie
2017 - English
We studied a combination of supercritical CO2 and water for the preparation of crystalline and pure nanostructured TiO2 without any thermal processing. The effect of temperature (40–100 °C) and pressure (10–30 MPa) on the purity, structural and textural properties was investigated.\n\n\n Keywords: carbon dioxide; TiO2; pressure Available in a digital repository NRGL
Use of Water-Modified Supercritical Carbon Dioxide for Direct Preparation of CrystallineMonolithic TiO2 Aerogels.

We studied a combination of supercritical CO2 and water for the preparation of crystalline and pure nanostructured TiO2 without any thermal processing. The effect of temperature (40–100 °C) and ...

Cerhová, Marie
Ústav chemických procesů, 2017

Helicene-based Thioureas.
Jakubec, Martin
2017 - English
The main goal of this work was to introduce the helicene moiety into the structure of bis(aryl)thiourea, to prepare a new type of a helicene-based organocatalyst. Several aryl(helicenyl)thioureas were synthesized so far. Their ability to form hydrogen-bond complexes with various types of substrates was verified using NMR and the activity of the catalysts is currently being explored.\n Keywords: helicene moiety; ability; nmr Available in a digital repository NRGL
Helicene-based Thioureas.

The main goal of this work was to introduce the helicene moiety into the structure of bis(aryl)thiourea, to prepare a new type of a helicene-based organocatalyst. Several aryl(helicenyl)thioureas were ...

Jakubec, Martin
Ústav chemických procesů, 2017

High-Temperature Desulfurization of a Producer Gas by La- and Ce-based Oxides.
Brynda, Jiří
2017 - English
Keywords: desulfurization; oxide fuel cells; sorbents Available in a digital repository NRGL
High-Temperature Desulfurization of a Producer Gas by La- and Ce-based Oxides.

Brynda, Jiří
Ústav chemických procesů, 2017

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