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991.
Baena-Moncada Angélica María Coneo-Rodríguez Rusbel La Rosa-Toro Adolfo Pastor Elena Barbero Cesar Planes Gabriel Ángel 《Journal of Solid State Electrochemistry》2019,23(9):2683-2693
Journal of Solid State Electrochemistry - A new family of PtFe catalysts supported on hierarchical porous carbon (HPC), with different porous sizes, was developed and tested as cathodes in oxygen... 相似文献
992.
Elena A. Lashina Elena M. Slavinskaya Nataliya A. Chumakova Gennadii A. Chumakov Andrei I. Boronin 《国际化学动力学杂志》2019,51(12):918-930
The results of temperature-programmed reaction experimental studies and mathematical modeling of self-sustained oscillations within an inverse temperature hysteresis in CO oxidation over Pd catalyst are presented. The experimental data demonstrate the influence of the reaction medium on the catalyst activity under reaction conditions. Under oxygen excess in the feeding gas mixture and high temperature, the defects appeared on the initially flat surface of metallic palladium due to deep oxidation of palladium (three-dimensional PdO nanoparticles were observed). The palladium oxide reduced under cooling of the catalytic system, and the catalyst surface became flat again. To take into account these variations of the palladium surface structure, we consider the piecewise-constant dependence of the rate constant of some reaction step on the concentrations of oxygen species, namely, the dissolved oxygen or oxide in the palladium bulk. The proposed model of the process in the cascade of continuous stirred-tank reactors that account for these dependences qualitatively describes the inverse temperature hysteresis as well as the oscillatory dynamics within the hysteresis loop which were obtained experimentally. 相似文献
993.
Giselle C. Yeo Elena Kosobrodova Alexey Kondyurin David R. McKenzie Marcela M. Bilek Anthony S. Weiss 《Macromolecular bioscience》2019,19(3)
Conventional wound therapy utilizes wound coverage to prevent infection, trauma, and fluid and thermal loss. However, this approach is often inadequate for large and/or chronic wounds, which require active intervention via therapeutic cells to promote healing. To address this need, a patch which delivers multipotent adult progenitor cells (MAPCs) is developed. Medical‐grade polyurethane (PU) films are modified using plasma immersion ion implantation (PIII), which creates a radical‐rich layer capable of rapidly and covalently attaching biomolecules. It is demonstrated that a short treatment duration of 400 s maximizes surface activation and wettability, minimizes reduction in gas permeability, and preserves the hydrolytic resistance of the PU film. The reactivity of PIII‐treated PU is utilized to immobilize the extracellular matrix protein tropoelastin in a functional conformation that stably withstands medical‐grade ethylene oxide sterilization. The PIII‐treated tropoelastin‐functionalized patch significantly promotes MAPC adhesion and proliferation over standard PU, while fully maintaining cell phenotype. Topical application of the MAPC‐seeded patch transfers cells to a human skin model, while undelivered MAPCs repopulate the patch surface for subsequent cell transfer. The potential of this new wound patch as a reservoir for the sustained delivery of therapeutic MAPCs and cell‐secreted factors for large and/or non‐healing wounds is indicated in the findings. 相似文献
994.
Michele Astolfi Giorgio Rispoli Gabriele Anania Elena Artioli Veronica Nevoso Giulia Zonta Cesare Malag 《Molecules (Basel, Switzerland)》2021,26(2)
User-friendly, low-cost equipment for preventive screening of severe or deadly pathologies are one of the most sought devices by the National Health Services, as they allow early disease detection and treatment, often avoiding its degeneration. In recent years more and more research groups are developing devices aimed at these goals employing gas sensors. Here, nanostructured chemoresistive metal oxide (MOX) sensors were employed in a patented prototype aimed to detect volatile organic compounds (VOCs), exhaled by blood samples collected from patients affected by colorectal cancer and from healthy subjects as a control. Four sensors, carefully selected after many years of laboratory tests on biological samples (cultured cells, human stools, human biopsies, etc.), were based here on various percentages of tin, tungsten, titanium, niobium, tantalum and vanadium oxides. Sensor voltage responses were statistically analyzed also with the receiver operating characteristic (ROC) curves, that allowed the identification of the cut-off discriminating between healthy and tumor affected subjects for each sensor, leading to an estimate of sensitivity and specificity parameters. ROC analysis demonstrated that sensors employing tin and titanium oxides decorated with gold nanoparticles gave sensitivities up to 80% yet with a specificity of 70%. 相似文献
995.
Stanislav Naryzhny Nikolay Klopov Natalia Ronzhina Elena Zorina Victor Zgoda Olga Kleyst Natalia Belyakova Olga Legina 《Electrophoresis》2020,41(12):1118-1124
The human proteome is composed of a diverse and heterogeneous range of gene products/proteoforms/protein species. Because of the growing amount of information about proteoforms generated by different methods, we need a convenient approach to make an inventory of the data. Here, we present a database of proteoforms that is based on information obtained by separation of proteoforms using 2DE followed by shotgun ESI–LC–MS/MS. The database's principles and structure are described. The database is called “2DE-pattern” as it contains multiple isoform-centric patterns of proteoforms separated according to 2DE principles. The database can be freely used at http://2de-pattern.pnpi.nrcki.ru . 相似文献
996.
997.
Volkov Alexey I. Eliseeva Svetlana N. Tolstopjatova Elena G. Kondratiev Veniamin V. 《Journal of Solid State Electrochemistry》2020,24(7):1607-1614
Journal of Solid State Electrochemistry - A simple and green approach for creating a highly capacitive molybdenum disulphide (MoS2) anode material for lithium-ion batteries is proposed. The... 相似文献
998.
999.
Enumeration of lactic acid bacteria: lacuna and improvement areas highlighted by proficiency testing
Abdel Massih Marleen Planchon Viviane Pitchugina Elena Mahillon Jacques 《Accreditation and quality assurance》2019,24(5):381-385
Accreditation and Quality Assurance - During the 2011 to 2018 food microbiology proficiency testing (PT) schemes organized by REQUASUD, a systematic analytical issue was detected. For the... 相似文献
1000.
Rotermel Maria V. Samigullina Rina F. Ivanova Irina V. Vladimirova Elena V. Baklanova Inna V. Krasnenko Tatiana I. 《Journal of Sol-Gel Science and Technology》2021,100(3):404-413
Journal of Sol-Gel Science and Technology - The Zn1.9Cu0.1SiO4 pigment was obtained by two variants of “soft” chemistry methods: using sol–gel synthesis in ethanol from TEOS and... 相似文献