Repozytorium Uniwersytetu Śląskiego RE-BUŚ
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Plant Biomechanics - A Natural Transition from Molecular to Organ Scale
No full text"Plants are multicellular organisms of a unique structure because their tissues consist of two interwoven networks: a network of interconnected protoplasts that is embedded in a network of tightly joined cell walls. Such a structure has significant implications from both developmental and biomechanical perspectives. First, it facilitates mechanical signaling and integration at the organ level. Second, plant tissues can be regarded as cellular solids [1]. An emerging mechanical property of such “constructed” plant organs is that they are prestressed. In the case of green plant organs, built mainly of living tissues, the cellular solids are pressurized by turgid protoplasts. Because tissues within the organ differ in cell size and cell wall stiffness, this pressurization leads to different stresses in different organ portions. Woody stems of living trees are also prestressed. Although they are built mainly of dead cells, the prestress develops during their differentiation. Such natural prestressed constructions are analogous to prestressed concrete, which revolutionized architecture, e.g., the construction of bridges. Also, in the case of plant organs, the prestress, referred to as tissue stress or tensegrity at the organ scale, improves their mechanical performance [2,3]. However, another consequence of such a plant construction is that biomechanical processes acting at subcellular, cellular, and organ scales are closely related and hard to separate, while investigations of molecular mechanisms, in which mechanical factors are involved, are by rule blended with tissue and organ level research." [...] (fragm.
On a generalization of multiplicative Sincov's equation for fuzzy implication functions
No full textCharacterizations of families of fuzzy implication functions are a necessary step to fully understand the behaviour of the members of the family, their potential applicability and their relations with other families. These characterizations are based on additional algebraical properties that completely define the family. Recently, the class of power based implications was characterized through, among others, the property I(x, y) ·I(y, z) =I(x, z)in a concrete sub-domain. This property, called in the literature also as multiplicative Sincov’s equation, was uncommon to other families, and it was studied in-depth in a previous article. This equality is generalized in this paper by understanding the internal product as the product t-norm and changing it to a general arbitrary continuous Archimedean t-norm. This additional property is analyzed jointly with the weak ordering property or the ordering property, leading to a characterization of those fuzzy implication functions satisfying both additional properties
The Number of Subgrain Boundaries in the Airfoils of Heat-Treated Single-Crystalline Turbine Blades
Get PDFIn the present study, the dendrites deflection mechanism from the mold walls were subjected to verification regarding its heat-treated turbine rotor blades. The number of macroscopic low-angle boundaries created on the cross-section of the blades’ airfoil near the tip was experimentally determined and compared to the number of low-angle boundaries calculated from a model based on the dendrites deflection mechanism. Based on the Laue patterns and geometrical parameters of airfoils, the number of low-angle boundaries occurring at the upper part of the blades airfoil after heat treatment was calculated. This number for the analyzed group of blades ranged from 5 to 9
T2K measurements of muon neutrino and antineutrino disappearance using 3.13×1021 protons on target
Get PDFK. Abe, N. Akhlaq, R. Akutsu, A. Ali, C. Alt, C. Andreopoulos, M. Antonova, S. Aoki, T. Arihara, Y. Asada, Y. Ashida, E. T. Atkin, Y. Awataguchi, G. J. Barker, G. Barr, D. Barrow, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, V. Berardi, L. Berns, S. Bhadra, A. Blondel, S. Bolognesi, T. Bonus,
B. Bourguille, S. B. Boyd, A. Bravar, D. Bravo Berguño, C. Bronner, S. Bron, M. Buizza Avanzini, S. Cao, S. L. Cartwright, M. G. Catanesi, A. Cervera, D. Cherdack, G. Christodoulou, M. Cicerchia,
J. Coleman, G. Collazuol, L. Cook, D. Coplowe, A. Cudd, G. De Rosa, T. Dealtry, C. C. Delogu, S. R. Dennis, C. Densham, A. Dergacheva, F. Di Lodovico, S. Dolan, T. A. Doyle, J. Dumarchez, P. Dunne , A. Eguchi, L. Eklund, S. Emery-Schrenk, A. Ereditato, A. J. Finch, G. A. Fiorentini, C. Francois, M. Friend, Y. Fujii, R. Fukuda, Y. Fukuda, K. Fusshoeller, C. Giganti, M. Gonin,9 A. Gorin, M. Guigue, D. R. Hadley, P. Hamacher-Baumann, M. Hartz, T. Hasegawa, S. Hassani, N. C. Hastings, Y. Hayato, A. Hiramoto, M. Hogan, N. T. Hong Van, T. Honjo, F. Iacob, A. K. Ichikawa, M. Ikeda, T. Ishida, M. Ishitsuka, K. Iwamoto, A. Izmaylov, N. Izumi, M. Jakkapu, B. Jamieson, S. J. Jenkins, C. Jesús-Valls, P. Jonsson, C. K. Jung, P. B. Jurj, M. Kabirnezhad, H. Kakuno, J. Kameda, S. P. Kasetti, Y. Kataoka, Y. Katayama, T. Katori, E. Kearns, M. Khabibullin, A. Khotjantsev, T. Kikawa, H. Kikutani, S. King, T. Kobata, T. Kobayashi, L. Koch, A. Konaka, L. L. Kormos, Y. Koshio, A. Kostin, K. Kowalik,Y. Kudenko, S. Kuribayashi, R. Kurjata, T. Kutter, M. Kuze, L. Labarga, J. Lagoda, M. Lamoureux, D. Last, M. Laveder, M. Lawe, R. P. Litchfield, S. L. Liu, A. Longhin, L. Ludovici, X. Lu, T. Lux, L. N. Machado, L. Magaletti, K. Mahn, M. Malek, S. Manly, L. Maret, A. D. Marino, L. Marti-Magro, T. Maruyama, T. Matsubara, K. Matsushita, C. Mauger, K. Mavrokoridis, E. Mazzucato, N. McCauley, J. McElwee, K. S. McFarland, C. McGrew, A. Mefodiev, M. Mezzetto, A. Minamino, O. Mineev, S. Mine, M. Miura, L. Molina Bueno, S. Moriyama, Th. A. Mueller, L. Munteanu, Y. Nagai, T. Nakadaira, M. Nakahata, Y. Nakajima, A. Nakamura, K. Nakamura, Y. Nakano, S. Nakayama, T. Nakaya,K. Nakayoshi, C. E. R. Naseby, T. V. Ngoc, V. Q. Nguyen, K. Niewczas, Y. Nishimura, E. Noah,
T. S. Nonnenmacher, F. Nova, J. Nowak, J. C. Nugent, H. M. O’Keeffe, L. O’Sullivan, T. Odagawa,
T. Ogawa, R. Okada, K. Okumura, T. Okusawa, R. A. Owen, Y. Oyama, V. Palladino, V. Paolone, M. Pari, W. C. Parker, S. Parsa, J. Pasternak, M. Pavin, D. Payne, G. C. Penn, L. Pickering, C. Pidcott, G. Pintaudi, C. Pistillo, B. Popov, M. Posiadala-Zezula, A. Pritchard, B. Quilain, T. Radermacher, E. Radicioni, B. Radics, P. N. Ratoff, C. Riccio, E. Rondio, S. Roth, A. Rubbia, A. C. Ruggeri, C. Ruggles, A. Rychter, K. Sakashita, F. Sánchez, G. Santucci, C. M. Schloesser, K. Scholberg, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, D. Sgalaberna, A. Shaikhiev, A. Shaykina, M. Shiozawa, W. Shorrock, A. Shvartsman, K. Skwarczynski, M. Smy, J. T. Sobczyk, H. Sobel, F. J. P. Soler, Y. Sonoda, R. Spina,
S. Suvorov, A. Suzuki, S. Y. Suzuki, Y. Suzuki, A. A. Sztuc, M. Tada, M. Tajima, A. Takeda,
Y. Takeuchi, H. K. Tanaka, Y. Tanihara, M. Tani, N. Teshima, L. F. Thompson, W. Toki, C. Touramanis,
T. Towstego, K. M. Tsui, T. Tsukamoto, M. Tzanov, Y. Uchida, M. Vagins,S. Valder, D. Vargas,
G. Vasseur, C. Vilela, W. G. S. Vinning, T. Vladisavljevic, T. Wachala, J. Walker, J. G. Walsh, Y. Wang,
D. Wark, M. O. Wascko, A. Weber, R. Wendell, M. J. Wilking, C. Wilkinson, J. R. Wilson,
K. Wood, C. Wret, J. Xia, K. Yamamoto, C. Yanagisawa, G. Yang, T. Yano, K. Yasutome, N. Yershov,
M. Yokoyama, T. Yoshida, M. Yu, A. Zalewska, J. Zalipska, K. Zaremba, G. Zarnecki,
M. Ziembicki, M. Zito, S. ZsoldosWe report measurements by the T2K experiment of the parameters θ23 and Δm2
32, which govern the
disappearance of muon neutrinos and antineutrinos in the three-flavor PMNS neutrino oscillation model at
T2K’s neutrino energy and propagation distance. Utilizing the ability of the experiment to run with either a
mainly neutrino or a mainly antineutrino beam, muon-like events from each beam mode are used to
measure these parameters separately for neutrino and antineutrino oscillations. Data taken from 1.49 × 1021
protons on target (POT) in neutrino mode and 1.64 × 1021 POT in antineutrino mode are used. The best-fit
values obtained by T2K were sin2ðθ23
Þ ¼ 0.51
þ0.06
−0.07
ð0.43
þ0.21
−0.05
Þ and Δm2
32
¼ 2.47
þ0.08
−0.09
ð2.50
þ0.18
−0.13
Þ ×
10−3 eV2=c4 for neutrinos (antineutrinos). No significant differences between the values of the parameters
describing the disappearance of muon neutrinos and antineutrinos were observed. An analysis using an
effective two-flavor neutrino oscillation model where the sine of the mixing angle is allowed to take
nonphysical values larger than 1 is also performed to check the consistency of our data with the three-flavor
model. Our data were found to be consistent with a physical value for the mixing angle
Spatial variations of tectonic uplift - subducting plate ffects on the Guerrero Forearc, Mexico
Get PDFUplift is the predominant factor controlling fluvial systems in tectonically deforming regions. Mountains along subduction zones force incision, aggradation, or sinuosity modifications, showing differential uplift and variations in erosion rates, in river incision, and in channel gradient produced by ongoing tectonic deformation. Thus, landscape can provide information on the tectonic activity of a defined region. Here, field studies, analysis of geomorphic indices using a digital elevation model, and dating of river terraces were undertaken to extract the following: (1) determine rates of ongoing tectonic deformation, (2) identify evidence of active faulting, and (3) explain the possible relation of ongoing differential uplift in the topography of the overriding plate with the geometry and roughness effects of subducting slab along the Mexican subduction within the
Guerrero sector. Landscape analysis using geomorphic indices suggests segmentation along stream of the studied Tecpan River basin. Rates of tectonic uplift were derived from river incision rates computed with the combination of strath terrace heights and associated dating. Tectonic uplift rates vary from ∼1 ± 0.3 mm/yr up to ∼5 ± 0.6 mm/yr during the Holocene, consistent with inferred high tectonic activity in this zone. These results vary significantly spatially, i.e., increasing upstream. Possible explanations for spatial variations of tectonic uplift rates are most likely related to an effect of the geometry and the rugged seafloor of the oceanic Cocos plate subduction beneath a faulted continental lithosphere
The Niemytzki plane is κ-metrizable
Get PDFWe prove that the Niemytzki plane is κ-metrizable and we try to explain the differences between the concepts of a stratifiable space and a κ-metrizable space. Also, we give a characterisation of κ-metrizable spaces which is modelled on the version described by Chigogidze
Anormal thermal history effect on the structural dynamics of probucol infiltrated into porous alumina
Get PDFHerein, broadband dielectric (BDS) and Fourier transform infrared spectroscopy (FTIR), together with differential scanning calorimetry (DSC) and X-ray diffraction (XRD), were applied to study the molecular dynamics, molecular interactions as well as physical stability of an amorphous Active Pharmaceutical Ingredient (API)-probucol (PRO)-infiltrated into anodic aluminum oxide (AAO) membranes of pore size, d ~ 10-160 nm. Interestingly, the behavior of examined substance strongly depends on the applied thermal protocol.
Remarkably, for the first time, we observed that the structural dynamics of the slowly cooled PRO under confinement is significantly enhanced when compared to thatofthe quenched material. This unusual behavior
was interpreted as a result of surface-induced effects (including the formation of well-resolved interfacial H-bonded layer and adsorption-desorption processes near the interface) that are magnified by the extremely high sensitivity to density fluctuation of studied PRO, reflected in the enormous pressure coefficient of the glass transition temperature dTg/dp = 427 K/GPa. In fact, FTIR investigations revealed that PRO tends to self-associate under confinement and forms a strongly bonded interfacial layer, which controls the variation in the structural dynamics of core molecules. Finally, we observed that the tendency to crystallize of confined API is
reduced with respect to the bulk, even though the critical size of PRO nuclei (rc ~ 3 nm) is significantly lower than the smallest examined pore size. Nevertheless, after few weeks of storage, the investigated substance crystallized in larger pores, while it remained stable in the nanochannels of d = 10 nm. A combination of XRD and DSC measurements indicated that the infiltrated PRO forms two polymorphs, the stable form I (dominating in bulk) and unstable form II (prevailing under confinement). That means that porous matrices might be used to obtain and maintain prolonged stability of unstable polymorphic forms of API
Bacteriological analysis of selected phenotypes of chronic rhinosinusitis with co-existing asthma, allergy and hypersensitivity to non-steroidal anti-inflammatory drugs
Get PDFIntroduction: Chronic rhinosinusitis (CRS) is one of the commonest chronic diseases. It is a systemic disease caused by many factors, including bacterial infections. There are two main types of CRS phenotypes: with polyps (CRSwNP) and without polyps (CRSsNP).
Aim: Analysis of sinus mucosal microbiome in patients with CRS depending on the phenotype. Investigating a possible link between the type of bacterial flora and the coexistence of diseases present in the CRS (asthma, allergy or hypersensitivity to non-steroidal anti-inflammatory drugs (NSAIDs) as well as the number of performed operations. Material and methods: The authors conducted a retrospective study of the bacterial flora of the nasal cavity in patients with CRS operated endoscopically from March 2016 to June 2017. The study consisted od 222 women and 248 men. On the basis of an endoscopic examination, patients were qualified for the phenotype with or without polyps. Based on the medical interview patients were divided into group with asthma, allergy, NSAID hypersensitivity, first and repeated operations. The statistical analysis was made. Results: There is no statistically significant relationship (p = 0.8519) between the CRS penotypes. In the group
with CRSsNP, a statistically significant relationship was found between the observed flora and the coexistence of asthma (p = 0.0409), a trend towards significance was also noticed in the case of allergy (p = 0.0947). There was no relationship between the flora and NSAID hypersensitivity (p = 0.7356). In the group of CRSwNP patients, no statistically significant relationship was found between the observed bacterial flora and the presence of asthma (p = 0.7393), hypersensitivity to drugs (p = 0.1509) or allergy (p = 0.7427). There is no statistical significance between the occurrence of particular flora and the multiplicity of operations in both the CRSwNP (p = 0.4609) and CRSsNP phenotypes (p = 0.2469).
Conclusions: Gram-positive cocci were equally common in CRSwNP and CRSsNP. In the CRSsNP, there was a correlation between the coexistence of asthma and allergy, and the presence of Gram-positive cocci. There was no statistical significance between the occurrence of particular flora and the multiplicity of operations in both CRS phenotypes
Corrosion resistance of the CpTi G2 cellular lattice with TPMS architecture for gas diffusion electrodes
Get PDFThe corrosion of materials used in the design of metal-air batteries may shorten their
cycle life. Therefore, metal-based materials with enhanced electrochemical stability have attracted
much attention. The purpose of this work was to determine the corrosion resistance of commercially
pure titanium Grade 2 (CpTi G2) cellular lattice with the triply periodic minimal surfaces (TPMS)
architecture of G80, D80, I-2Y80 in 0.1 M KOH solution saturated with oxygen at 25 C. To produce
CpTi G2 cellular lattices, selective laser melting technology was used which allowed us to obtain
3D cellular lattice structures with a controlled total porosity of 80%. For comparison, the bulk
electrode was also investigated. SEM examination and statistical analysis of the surface topography
maps of the CpTi G2 cellular lattices with the TPMS architecture revealed much more complex
surface morphology compared to the bulk CpTi SLM. Corrosion resistance tests of the obtained
materials were conducted using open circuit potential method, Tafel curves, anodic polarization
curves, and electrochemical impedance spectroscopy. The highest corrosion resistance and the lowest
material consumption per year were revealed for the CpTi G2 cellular lattice with TPMS architecture
of G80, which can be proposed as promising material with increased corrosion resistance for gas
diffusion in alkaline metal-air batteries