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1,054 results on '"Novak, Petr"'

204. The large area detector onboard the eXTP mission

Author

Feroci, Marco, primary, Ambrosi, Giovanni, additional, Ambrosino, Filippo, additional, Antonelli, Matias, additional, Argan, Andrea, additional, Babinec, Viktor, additional, Barbera, Marco, additional, Bayer, Jörg, additional, Bellutti, Pierluigi, additional, Bertucci, Bruna, additional, Bertuccio, Giuseppe, additional, Bi, Xingzi, additional, Boezio, Mirko, additional, Bonvicini, Walter, additional, Borghi, Giacomo, additional, Bozzo, Enrico, additional, Baudin, David, additional, Bouyjou, Florent, additional, Brienza, Daniele, additional, Cadoux, Franck, additional, Campana, Riccardo, additional, Cao, Jiewei, additional, Cavazzuti, Elisabetta, additional, Ceraudo, Francesco, additional, Chen, Tianxiang, additional, Chen, Wen, additional, Cirrincione, Daniela, additional, De Angelis, Nicolas, additional, De Rosa, Alessandra, additional, Del Monte, Ettore, additional, Di Cosimo, Sergio, additional, Dilillo, Giuseppe, additional, Dohnal, Roman, additional, Donnarumma, Immacolata, additional, Evangelista, Yuri, additional, Fan, Qingmei, additional, Favre, Yannick, additional, Fiandrini, Emanuele, additional, Ficorella, Francesco, additional, Fuschino, Fabio, additional, Gao, Na, additional, Gevin, Olivier, additional, Grassi, Marco, additional, Guedel, Manuel, additional, Han, Xingbo, additional, He, Huilin, additional, Hedderman, Paul, additional, den herder, jan-willem, additional, Hynek, Richard, additional, Hong, Bing, additional, Jin, Ge, additional, Kole, Merlin, additional, Karas, Vladimír, additional, Komarek, Martin, additional, Labanti, Claudio, additional, Li, Loghui, additional, Li, Tianming, additional, Liang, Hong, additional, Limousin, Olivier, additional, Liu, Rui, additional, Lo Cicero, Ugo, additional, Lohering, Jens, additional, Lombardi, Giovanni, additional, Lu, Fang-Jun, additional, Luo, Tao, additional, Malcovati, Piero, additional, Mao, Hanqi, additional, Marinucci, Andrea, additional, Mele, Filippo, additional, Mendes, Vasco, additional, Merkl, Martin, additional, Meuris, Aline, additional, Michalska, Małgorzata, additional, Morbidini, Alfredo, additional, Morgante, Gianluca, additional, Muleri, Fabio, additional, Munini, Riccardo, additional, Mussolin, Lorenzo, additional, Negri, Barbara, additional, Novak, Petr, additional, Nowosielski, Witold, additional, Nuti, Alessio, additional, Orleanski, Piotr, additional, Ottensamer, Roland, additional, Pacciani, Luigi, additional, Paltani, Stephane, additional, Pan, Teng, additional, Pepponi, Giancarlo, additional, Perinati, Emanuele, additional, Piazzolla, Raffaele, additional, Picciotto, Antonino, additional, Pliego, Samuel, additional, Rachevski, Alexandre, additional, Rashevskaia, Irina, additional, Santangelo, Andrea, additional, Serafinelli, Roberto, additional, Schanne, Stéphane, additional, Skup, Konrad, additional, Sveda, Libor, additional, Svoboda, Jiri, additional, Tenzer, Christopher, additional, Todaro, Michela, additional, Torok, Gabreil, additional, Trois, Alessio, additional, Vacchi, Andrea, additional, Virgilli, Enrico, additional, Xiong, Hao, additional, Wang, Jian, additional, Wang, Xianqi, additional, Winter, Berend, additional, Wu, Xin, additional, Xu, Yupeng, additional, Zampa, Gianluigi, additional, Zampa, Nicola, additional, Zdziarski, Andrei, additional, Zhang, Long, additional, Zhang, Shu, additional, Zhang, Shuang-Nan, additional, Zhang, Wenda, additional, Zhang, Xiaoli, additional, Zhang, Zhen, additional, Zhou, Yupeng, additional, and Zorzi, Nicola, additional

Published
2022
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208. Elucidating the Humidity-Induced Degradation of Ni-Rich Layered Cathodes for Li-Ion Batteries

Author

Zhang, Leiting, Gubler, Elisabeth Agnes Muller, Tai, Cheuk-Wai, Kondracki, Lukasz, Sommer, Heino, Novak, Petr, El Kazzi, Mario, Trabesinger, Sigita, Zhang, Leiting, Gubler, Elisabeth Agnes Muller, Tai, Cheuk-Wai, Kondracki, Lukasz, Sommer, Heino, Novak, Petr, El Kazzi, Mario, and Trabesinger, Sigita

Abstract

Ni-rich layered oxides, in a general term of Li-(NixCoyMn1-x-y)O-2 (x > 0.5), are widely recognized as promising candidates for improving the specific energy and lowering the cost for next-generation Li-ion batteries. However, the high surface reactivity of these materials results in side reactions during improper storage and notable gas release when the cell is charged beyond 4.3 V vs L+/Li-0. Therefore, in this study, we embark on a comprehensive investigation on the moisture sensitivity of LiNi0.85Co0.1Mn0.05O2 by aging it in a controlled environment at a constant room-temperature relative humidity of 63% up to 1 year. We quantitatively analyze the gassing of the aged samples by online electrochemical mass spectrometry and further depict plausible reaction pathways, accounting for the origin of the gas release. Transmission electron microscopy reveals formation of an amorphous surface impurity layer of ca. 10 nm in thickness, as a result of continuous reactions with moisture and CO2 from the air. Underneath it, there is another reconstructed layer of ca. 20 nm in thickness, showing rock salt/spinel-like features. Our results provide insight into the complex interfacial degradation phenomena and future directions for the development of high-performance Ni-rich layered oxides.

Published
2022
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209. The ecology of palm genomes: repeat-associated genome size expansion is constrained by aridity

Author

Ministerio de Ciencia e Innovación (España), Garfield Weston Foundation, Ministry of Education, Youth and Sports (Czech Republic), Schley, Rowan J., Pellicer, Jaume, Ge, Xue-Jun, Barrett, Craig, Bellot, Sidonie, Guignard, Maïté S, Novak, Petr, Suda, Jan, Fraser, Donald, Baker, William J., Dodsworth, Steven, Macas, Jiří, Leitch, Andrew R., Leitch, Ilia J., Ministerio de Ciencia e Innovación (España), Garfield Weston Foundation, Ministry of Education, Youth and Sports (Czech Republic), Schley, Rowan J., Pellicer, Jaume, Ge, Xue-Jun, Barrett, Craig, Bellot, Sidonie, Guignard, Maïté S, Novak, Petr, Suda, Jan, Fraser, Donald, Baker, William J., Dodsworth, Steven, Macas, Jiří, Leitch, Andrew R., and Leitch, Ilia J.

Abstract

Genome size varies 2400-fold across plants, influencing their evolution through changes in cell size and cell division rates which impact plants' environmental stress tolerance. Repetitive element expansion explains much genome size diversity, and the processes structuring repeat "communities" are analogous to those structuring ecological communities. However, which environmental stressors influence repeat community dynamics has not yet been examined from an ecological perspective. We measured genome size and leveraged climatic data for 91% of genera within the ecologically diverse palm family (Arecaceae). We then generated genomic repeat profiles for 141 palm species, and analysed repeats using phylogenetically informed linear models to explore relationships between repeat dynamics and environmental factors. We show that palm genome size and repeat "community" composition are best explained by aridity. Specifically, Ty3-gypsy and TIR elements were more abundant in palm species from wetter environments, which generally had larger genomes, suggesting amplification. By contrast, Ty1-copia and LINE elements were more abundant in drier environments. Our results suggest that water stress inhibits repeat expansion through selection on upper genome size limits. However, elements that may associate with stress-response genes (e.g. Ty1-copia) have amplified in arid-adapted palm species. Overall, we provide novel evidence of climate influencing the assembly of repeat "communities".

Published
2022

237. The External Factors Leading to Product Innovation Outcomes in the Visegrad Group-Structural Equation Model Approach.

Author

Odei, Michael Amponsah and Novak, Petr

Abstract

This paper empirically investigates the role of external factors which drives small and medium enterprises product innovation in the Visegrad Group. An empirical analysis is based on the Business Environment and Enterprise Performance Survey conducted by the World bank with a combined sample of 2002 small and medium enterprises (SMEs) in the Czech Republic, Slovakia, Poland, and Hungary. The results of the Structural Equation Model indicate that product innovation performance is slightly higher among SMEs that are proactive in strengthening their relationships with innovative suppliers, users, and consumers. Furthermore, the findings of this paper support the view that SMEs will have better new product development results if they improve their relationships with foreign-owned firms and collaborate with external research firms. Again, the empirical study will give insights into the SME's product innovation outcomes in the Visegrad Group and a wake-up call to SME's practitioners and stakeholders on the need to collaborate externally across the European regions. [ABSTRACT FROM AUTHOR]

Published
2022
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249. Effective removal of nonionic detergents in protein mass spectrometry, hydrogen/deuterium exchange, and proteomics

Author

Rey, Martial, Mrazek, Hynek, Pompach, Petr, Novak, Petr, Pelosi, Ludovic, Brandolin, Gerard, Forest, Eric, Havlicek, Vladimir, and Man, Petr

Subjects
Ion exchange -- Observations, Proteomics -- Research, Mass spectrometry -- Methods, Detergents, Synthetic -- Properties, Chemistry
Abstract

Detergents are frequently used for protein isolation and solubilization. Their presence is crucial in membrane protein protocols or in lipid raft proteomics. However, they are usually poorly compatible with mass spectrometry. Several different sample preparation protocols are routinely used, but they are either laborious or suffer from sample losses. Here, we describe our alternative method for nonionic detergent removal. It is based on selective detergent extraction after capture of the sample on a reversed phase cartridge. The extraction is performed by chlorinated solvents and works well for polyoxyethylene based nonionic detergents, but also for polymers like polyethylene and propylene glycol. Detergent removal can be also carried out on the protein level but a special care must be taken with hydrephobic proteins. In such cases, it is preferable to perform detergent removal after proteolysis which digests the protein to peptides and reduces the hydrophobicity. The method can easily be automated and is compatible with hydrogen/deuterium exchange coupled to mass spectrometry. 10.1021/ac100171m

Published
2010

250. Laser desorption-ionization of lipid transfers: tissue mass spectrometry imaging without MALDI matrix

Author

Vidova, Veronika, Novak, Petr, Strohalm, Martin, Pol, Jaroslav, Havlicek, Vladimir, and Volny, Michael

Subjects
Mass spectrometry -- Methods, Ionization -- Observations, Chemistry, Analytic -- Research, Lipids -- Synthesis, Lipids -- Observations, Chemistry
Abstract

Mass spectrometry imaging of tissue-lipid transfers without MALDI matrix is demonstrated. Commercially available nanostructured surfaces (nano-assisted laser desorption-ionization or NALDI) are used as substrates for imprinting of tissue sections. The lithographic transfers are then washed and the two-dimensional distribution of the lipids is imaged by laser desorption-ionization mass spectrometry. The NALDI imaging of lipid transfers is compared with standard MALDI imaging of matrix-coated tissue sections. The obtained images are of the same quality, and no spatial information is lost due to the imprinting process. NALDI imaging is faster due to the absence of the time-consuming matrix deposition step, and the NALDI mass spectra are less complex and easier to interpret than standard MALDI. In this particular application example, NALDI mass spectrometry is able to identify the same lipid species as MALDI mass spectrometry and provides better distinction between kidney and adrenal gland tissues based on the lipid analysis. 10.1021/ac100661h

Published
2010

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