11 results on '"Martinková L"'
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2. Development of heating cloth for frost protection in vineyards and fruit orchards
- Author
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Laňar, L., primary, Scháňková, K., additional, Marek, J., additional, and Martinková, L., additional
- Published
- 2021
- Full Text
- View/download PDF
3. A Review of Textiles Reflecting FIR Produced by the Human Body
- Author
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Militký Jiří, Křemenáková Dana, Venkataraman Mohanapriya, Večerník Josef, Martínková Lenka, Marek Jan, and Procházka Jiří
- Subjects
far infrared ,reflection ,infrared radiation ,heat transfer ,thermal radiation ,emissivity ,fir textiles ,Textile bleaching, dyeing, printing, etc. ,TP890-933 - Abstract
The human body constantly produces thermal electromagnetic radiation with a maximum of about 10 μm. This thermal radiation has a number of positive effects on the human body and, in addition, allows the insulation under clothing to be improved under extreme climatic conditions, causing a significant reduction in ambient temperature. With so-called far-infrared (FIR) textiles, it is possible to ensure the reflection of thermal radiation back to the human body. In the first part of this review, the generation of heat by the human body and its propagation by radiation through the skin are comprehensively explained. The thermal characteristics of the individual skin layers as an emitter of infrared radiation are given. The second part discusses the basic preparation methods of FIR textiles. Suitable particle systems are described based on metals and their oxides, porous carbon, and special ceramics. Modification of the fiber phase (especially the fineness of the fibers and the porosity of the fabric) in combination with the surface coating of metals is also used for their health-promoting effects. The main manufacturers of FIR textiles and their typical products are mentioned.
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- 2022
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4. ATERBIO - ENVIRONMENT FRIENDLY FUNCTIONAL BARRIER TEXTILES BASED ON PHOTOACTIVE PHTHALOCYANINE DYEINGS.
- Author
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Martinková, L., Kořínková, R., Karásková, M., Vrtalová, M., and Špelina, V.
- Subjects
PHOTOACTIVE yellow protein ,PHTHALOCYANINES ,TEXTILE fibers ,TEXTILE industry ,TEXTILE machinery - Abstract
An innovative photoactive phthalocyanine based antimicrobial system used for textile barrier finishing was studied and optimized as a new tool for photo-initiated antimicrobial functionality of textiles. A range of photoactive phthalocyanines containing Zn or Al and reactive groups capable to create a covalent bond with celluiosic fibres was synthesized and applied on the cotton fabric by the reactive dyeing process. The antimicrobial efficiency of the finished fabrics was determined according to a modified standard relevant for health-care textiles evaluation during repeated washing and chemo-thermo-disinfection maintenance cycles. The unique properties of textiles dyed with photoactive phthalocyanine derivatives were confirmed. This type of textile finishing can be used for simultaneous dyeing and preparation of antimicrobial/self-cleaning textile materials with a long-lasting wash-permanent barrier effect as an effective, safe and less environmentally risky alternative of conventional antimicrobial systems. [ABSTRACT FROM AUTHOR]
- Published
- 2016
5. Vliv kožní teploty na výsledek screeningové elektromyografie v rámci pracovnělékařských prohlídek.
- Author
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Šplíchalová, A., Tomášková, H., Hrnčíř, K., Martinková, L., Jašurková, O., and Ambrúžová, N.
- Abstract
Copyright of Occupational Medicine / Pracovní Lékarství is the property of Czech Medical Association of JE Purkyne and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
6. Evaluation of market demand for a specific product
- Author
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Rowland Zuzana, Kučera Jiří, and Martínková Leona
- Subjects
demand ,coronavirus ,market ,smartphones ,Social Sciences - Abstract
The aim of this paper was to evaluate the demand for mobile phones in the world at the time of the coronavirus pandemic and to predict future development up until the end of 2022. During the covid-19 pandemic, markets in all sectors were subdued due to limited production and sales. As the production of chips for electronics was one of the deeply affected areas in terms of production slowdown, along with the rapid purchase of electronics at the beginning of the pandemic, there was also a slowdown in sales. The method of describing time series and calculation using linear regression is used. In this work, it is found that the decline in demand for mobile phones was caused by a global pandemic and consumers' uncertainty in maintaining their jobs. Overall, during the covid-19 pandemic, we saw a drop in the number of mobile phone units sold by more than 40,000. Furthermore, it was found that the entire mobile phone market is clearly recovering after the coronavirus crisis.
- Published
- 2022
- Full Text
- View/download PDF
7. Dual mode of IFI16 binding to supercoiled and linear DNA: A closer insight.
- Author
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Valková N, Kratochvilová L, Martinková L, and Brázda V
- Subjects
- Phosphoproteins metabolism, Immunity, Innate, DNA, Superhelical, DNA metabolism
- Abstract
IFI16 (Interferon inducible protein 16) is a DNA sensor responsible for innate immune response stimulation and a direct viral restriction by modulating gene expression and replication. Many IFI16-DNA binding properties were described - length-dependent and sequence-independent binding, oligomerization of IFI16 upon recognition, sliding on the DNA, and preference for supercoiled DNA. However, the question of the role of IFI16-DNA binding in distinct IFI16 functions remains unclear. Here we demonstrate two modes of IFI16 binding to DNA using atomic force microscopy and electrophoretic mobility shift assays. In our study, we show that IFI16 can bind to DNA in the form of globular complexes or oligomers depending on DNA topology and molar ratios. The stability of the complexes is different in higher salt concentrations. In addition, we observed no preferential binding with the HIN-A or HIN-B domains to supercoiled DNA, revealing the importance of the whole protein for this specificity. These results provide more profound insight into IFI16-DNA interactions and may be important in answering the question of self- and non-self-DNA binding by the IFI16 protein and potentially could shed light on the role of DNA binding in distinct IFI16 functions., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Inc. All rights reserved.)
- Published
- 2023
- Full Text
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8. Biobased Waterborne Polyurethane-Ureas Modified with POSS-OH for Fluorine-Free Hydrophobic Textile Coatings.
- Author
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Lacruz A, Salvador M, Blanco M, Vidal K, Goitandia AM, Martinková L, Kyselka M, and de Ilarduya AM
- Abstract
Waterborne polyurethane-urea dispersions (WPUD), which are based on fully biobased amorphous polyester polyol and isophorone diisocyanate (IPDI), have been successfully synthesized obtaining a finishing agent that provides textiles with an enhanced hydrophobicity and water column. Grafting of trans-cyclohexanediol isobutyl POSS (POSS-OH) to the biobased polymer backbone has also been investigated for the first time and its properties compared to a standard chain extender, 1,3-propanediol (PDO). The chemical structure of WPUD has been characterized by Fourier-transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). The thermal properties have been evaluated by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Mechanical properties have been studied by tensile stress-strain analysis. Moreover, the particle size, particle size distribution (PSD), and stability of developed waterborne dispersions have been assessed by dynamic light scattering (DLS), Z-potential, storage aging tests, and accelerated aging tests by analytical centrifuge (LUM). Subsequently, selected fabrics have been face-coated by the WPUD using the knife coating method and their properties have been assessed by measuring the water contact angle (WCA), oil contact angle (OCA), water column, fabric stiffness, air permeability, and water vapor resistance (breathability). Finally, the surface morphology and elemental composition of uncoated and coated fabrics have been studied by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS), respectively. All of the synthesized polyurethane-ureas provided the coated substrates with a remarkable hydrophobicity and water column, resulting in a more sustainable alternative to waterproof coatings based on fluoropolymers, such as PTFE. Grafting POSS-OH to the polymeric backbone has led to textile coatings with enhanced hydrophobicity, maintaining thermal, mechanical, and water column properties, giving rise to multifunctional coatings that are highly demanded in protective workwear and technical textiles.
- Published
- 2021
- Full Text
- View/download PDF
9. Biobased Waterborne Polyurethane-Urea/SWCNT Nanocomposites for Hydrophobic and Electrically Conductive Textile Coatings.
- Author
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Lacruz A, Salvador M, Blanco M, Vidal K, Goitandia AM, Martinková L, Kyselka M, and de Ilarduya AM
- Abstract
Waterborne polyurethane-urea dispersions (WPUD), which are based on 100% bio-based semi-crystalline polyester polyol and isophorone diisocyanate, have been successfully synthesized and doped with single-walled carbon nanotubes (SWCNT) to obtain a finishing agent that provides textiles with multifunctional properties. The chemical structure of WPUD has been characterized by Fourier-transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). The thermal properties have been evaluated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical thermal analysis (DMTA). Mechanical properties have been studied by tensile stress-strain analysis. Moreover, the particle size, particle size distribution (PSD), and stability of developed waterborne dispersions have been assessed by dynamic light scattering (DLS), Z-potential, and accelerated aging tests (analytical centrifugation). Subsequently, selected fabrics have been face-coated by the WPUD using knife coating method and their properties have been assessed by measuring water contact angle (WCA), water column, fabric stiffness, and air permeability. The electrical conductivity of textiles coated with SWCNT-doped WPUD has been evaluated by EN 1149 standard. Finally, the surface morphologies of uncoated and coated fabrics have been studied by scanning electron microscopy (SEM). All of the synthesized polyurethane-ureas provide the coated substrates with remarkable water-repellency and water column, being therefore a more sustainable alternative to waterproof coatings based on fluoropolymers, such as PTFE. The additivation of the polymeric matrices with SWCNT has led to textile coatings with excellent electrical conductivity, maintaining water column properties, giving rise to multifunctional coatings that are highly demanded in protective workwear and technical textiles.
- Published
- 2021
- Full Text
- View/download PDF
10. [Treatment of Relapsed and Refractory Hodgkin Lymphoma - Recommendations of the Czech Hodgkin Lymphoma Study Group].
- Author
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Móciková H, Marková J, Gahérová Ľ, Král Z, Sýkorová A, Belada D, Procházka V, Martinková L, Papajík T, and Kozák T
- Subjects
- Czech Republic, Hodgkin Disease pathology, Humans, Neoplasm Recurrence, Local pathology, Prognosis, Survival Rate, Transplantation, Autologous, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Drug Resistance, Neoplasm, Hematopoietic Stem Cell Transplantation, Hodgkin Disease therapy, Neoplasm Recurrence, Local therapy, Salvage Therapy
- Abstract
High-dose chemotherapy with autologous stem cell transplantation remains the current standard of treatment for young patients with Hodgkin lymphoma in first relapse or in those who are refractory to first-line treatment. The most important prognostic factors in relapses are clinical stage IV, poor performance status, bulky mass, and less than partial remission after salvage chemotherapy. Standard salvage chemotherapy in relapse before autologous transplantation has not been defined; however, DHAP and ICE are most frequently used in this setting. A standard conditioning regimen before autologous transplantation is BEAM. Tandem autologous transplantation has been investigated in high-risk patients. Brentuximab vedotin is recommended as a consolidation treatment in patients with a high risk of relapse after autologous transplantation. Brentuximab vedotin is the standard of treatment for relapse after autologous transplantation, and subsequent allogeneic stem cell transplantation should be considered in young patients. Bretuximab vedotin in combination with bendamustine, nivolumab, and pembrolizumab, and combinations thereof with other drugs, were investigated in clinical trials in relapsed or refractory patients with Hodgkin lymphoma.Key words: Hodgkin lymphoma - autologous stem cell transplantation - brentuximab vedotin - nivolumabThis work was supported by grant awarded by AZV 16-29857, Ministry of Health in Czech Republic, Research project P 27/2012 awarded by Charles University in Prague, 3rd Faculty of Medicine, Prague.The authors declare they have no potential confl icts of interest concerning drugs, products, or services used in the study.The Editorial Board declares that the manuscript met the ICMJE recommendation for biomedical papers.Submitted: 7. 6. 2016Accepted: 24. 8. 2016.
- Published
- 2016
- Full Text
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11. Cotton Fabric Coated with Conducting Polymers and its Application in Monitoring of Carnivorous Plant Response.
- Author
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Bajgar V, Penhaker M, Martinková L, Pavlovič A, Bober P, Trchová M, and Stejskal J
- Abstract
The paper describes the electrical plant response to mechanical stimulation monitored with the help of conducting polymers deposited on cotton fabric. Cotton fabric was coated with conducting polymers, polyaniline or polypyrrole, in situ during the oxidation of respective monomers in aqueous medium. Thus, modified fabrics were again coated with polypyrrole or polyaniline, respectively, in order to investigate any synergetic effect between both polymers with respect to conductivity and its stability during repeated dry cleaning. The coating was confirmed by infrared spectroscopy. The resulting fabrics have been used as electrodes to collect the electrical response to the stimulation of a Venus flytrap plant. This is a paradigm of the use of conducting polymers in monitoring of plant neurobiology.
- Published
- 2016
- Full Text
- View/download PDF
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