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Relationships between Microbiological and Physicochemical Properties of Substrata, Fungal Root Colonisation and Plant Performance of Commercially Available Ornamental Plant Species Grown in Pots

SSRN

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SSRN 2024年

作者： Móll, Maciej Skubala, Kaja Baran, Katarzyna Wróbel, Maria Rożek, Katarzyna Stanek, Malgorzata Orzechowska, Aleksandra Zubek, Szymon Institute of Botany Faculty of Biology Jagiellonian University in Kraków Gronostajowa 3 Kraków30-387 Poland W. Szafer Institute of Botany Polish Academy of Sciences Lubicz 46 Kraków31-512 Poland Faculty of Physics and Applied Computer Science AGH University of Kraków Al. Mickiewicza 30 Kraków30-059 Poland

The relationships of ornamental plants with soil microorganisms, which can either stimulate or suppress their performance and thereby impact the production process, remain largely unexplored. Therefore, we conducted a study on 10 common ornamental plant species available in large DIY stores to compare the microbiological and physicochemical properties of substrata used for their cultivation and assess their colonisation by root-inhabiting fungi, namely arbuscular mycorrhizal fungi (AMF), dark septate endophytes (DSE), and Olpidium. The substrata exhibited significant variations in their microbiological and physicochemical properties, depending on both their origin from DIY stores and the ornamental plant species. Hyphae and spores of AMF were not found in any analysed roots and substrata, respectively, except for the low level of colonisation observed in Echinacea purpurea roots. However, 8 plant species were colonised by DSE and 8 by Olpidium spp. More acidic substrata with a high content of organic matter and the ability to hold water favoured the colonisation of Olpidium spp. in roots, and the opposite trend was found for DSE. The occurrence of both groups of endophytes, especially Olpidium, was limited in plants with higher biomass and vitality. In conclusion, commercially available ornamental plant species rarely form symbiotic associations with AMF in pot cultivation. Instead, they are often colonised by other root-inhabiting fungi, such as DSE, which are known to have either positive or negative effects on their hosts, and Olpidium spp., which can transfer plant viruses. We suspect that these results are due to high nutrient, organic matter, and water contents in substrata. © 2024, The Authors. All rights reserved.

关键词： Fungi

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Band structure of a nonparabolic two-dimensional electron gas system

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Physical Review B 2023年第15期107卷 155139-155139页

作者： Dawid Wutke Mariusz Garb Agnieszka Krawczyk Anna Mielczarek Natalia Olszowska Marcin Rosmus Jacek J. Kolodziej Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University Lojasiewicza 11 30-348 Kraków Poland National Synchrotron Radiation Centre SOLARIS Jagiellonian University Czerwone Maki 98 PL-30392 Kraków Poland

Using angle-resolved photoelectron spectroscopy (ARPES), we study the band structures of two-dimensional electron gases (2DEGs) formed at Te-doped surfaces of InAs(110), as a result of band bending. The selected surface system is very clean and stable; therefore, ARPES spectra may be registered in short times, with minimal adsorption of residual gases and no photon beam-induced damage. We record a set of data that allows for a detailed analysis of the 2DEG band shapes, their thermal dependencies, and for an assessment of the many-body interactions. We find the electron-phonon interaction extremally weak and the electron-electron interactions hidden in dominant electron-donor interactions. While 2DEG band shapes are observed to be variable in correlation with the 2DEG density, this is tracked down to the variability of the band-bending potential and nonparabolicity of the system, and not to the many-body interactions. Thus, many-body renormalization of the 2DEG bands is not required, and the bands are described well by using the one-electron theoretical frame.

关键词： Electronic structure Two-dimensional electron system Photoemission spectroscopy k dot p method

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Role of intercalated cobalt in the electronic structure of Co1/3NbS2

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Physical Review B 2022年第15期105卷 155114-155114页

作者： Petar Popčević Yuki Utsumi Izabela Biało Wojciech Tabis Mateusz A. Gala Marcin Rosmus Jacek J. Kolodziej Natalia Tomaszewska Mariusz Garb Helmuth Berger Ivo Batistić Neven Barišić László Forró Eduard Tutiš Institute of Physics Bijenička c. 46 10000 Zagreb Croatia Institute of Solid State Physics TU Wien 1040 Vienna Austria AGH University of Science and Technology Faculty of Physics and Applied Computer Science 30-059 Krakow Poland Solaris National synchrotron Radiation Centre Jagiellonian University Czerwone Maki 98 30-392 Krakow Poland Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University Lojasiewicza 11 30-348 Krakow Poland Laboratory of Physics of Complex Matter École polytechnique fédérale de Lausanne 1015 Lausanne Switzerland Department of Physics Faculty of Science University of Zagreb Bijenička c. 32 10000 Zagreb Croatia Stavropoulos Center for Complex Quantum Matter University of Notre Dame Notre Dame Indiana 46556 USA

Co1/3NbS2 is the magnetic intercalate of 2H-NbS2 where electronic itinerant and magnetic properties strongly influence each other throughout the phase diagram. Here we report the angle-resolved photoelectron spectroscopy (ARPES) study in Co1/3NbS2. In agreement with previous reports, the observed electronic structure seemingly resembles the one of the parent material 2H-NbS2, with the shift in Fermi energy of 0.5 eV accounting for the charge transfer of approximately two electrons from each Co ion into the NbS2 layers. However, in addition, and in contrast to previous reports, we observe significant departures that cannot be explained by the rigid band shift accompanied by minor deformation of bands: First, entirely unrelated to the 2H-NbS2 electronic structure, a shallow electronic band is found crossing the Fermi level near the boundary of the first Brillouin zone of Co1/3NbS2. The evolution of the experimental spectra upon varying the incident photon energy suggests the Co origin of this band. Second, the Nb bonding band, found deeply submerged below the Fermi level at the Γ point, indicates that the interlayer hybridization is significantly amplified by intercalation, with Co magnetic ions probably acting as strong covalent bridges between NbS2 layers. The strong hybridization between orbitals that support the itinerant states and the orbitals hosting the local magnetic moments indicates the importance of strong electronic correlations, with the interlayer coupling playing an exquisite role.

关键词： Electronic structure Fermi surface Dichalcogenides Strongly correlated systems Angle-resolved photoemission spectroscopy DFT+U Density functional theory Wannier function methods

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Spin Hall Induced Magnetization Dynamics in Multiferroic Tunnel Junction

arXiv

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arXiv 2023年

作者： Pawlak, Jakub Skowroński, Witold Kuświk, Piotr Casanova, Félix Przybylski, Marek AGH University of Science and Technology Faculty of Physics and Applied Computer Science Al. Mickiewicza 30 Kraków30-059 Poland AGH University of Science and Technology Academic Centre for Materials and Nanotechnology Al. Mickiewicza 30 Kraków30-059 Poland AGH University of Science and Technology Institute of Electronics Al. Mickiewicza 30 Kraków30-059 Poland CIC nanoGUNE BRTA Basque Country Donostia-San Sebastian20018 Spain Institute of Molecular Physics Polish Academy of Sciences ul. Smoluchowskiego 17 Poznań60-179 Poland

The combination of spin-orbit coupling driven effects and multiferroic tunneling properties was explored experimentally in thin Pt/Co/BTO/LSMO multilayers. The presence of a Pt heavy metal allows for the spin current-induced magnetization precession of Co upon radio-frequency charge current injection. The utilization of a BTO ferroelectric tunnel barrier separating the Co and LSMO ferromagnetic electrodes gives rise to both tunneling- magnetoresistance and electroresistance. Using the spin-orbit torque ferromagnetic resonance, the maganetization dynamics of the Co/Pt bilayers was studied at room temperature. Unexpectedly the magnetization dynamics study in the same geometry performed at low temperature reveals the existence of both Co and LSMO resonance peaks indicating efficient spin current generation both using the spin Hall effect in Pt and spin pumping in LSMO that tunnel via the BTO barrier. Copyright © 2023, The Authors. All rights reserved.

关键词： Tunnel junctions

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Symbrain: A large-scale dataset of MRI images for neonatal brain symmetry analysis

arXiv

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arXiv 2024年

作者： Gucciardi, Arnaud El Ghazouali, Safouane Venturini, Francesca Groznik, Vida Michelucci, Umberto University of Ljubljana Faculty of Computer and Information Science Ljubljana Slovenia TOELT llc Machine Learning Research and Development LAB Dübendorf Switzerland Institute of Applied Mathematics and Physics Zurich University of Applied Sciences Winterthur Switzerland Faculty of Mathematics Natural Sciences and Information Technologies University of Primorska Koper Slovenia

This paper presents an annotated dataset of brain MRI images designed to advance the field of brain symmetry study. Magnetic resonance imaging (MRI) has gained interest in analyzing brain symmetry in neonatal infants, and challenges remain due to the vast size differences between fetal and adult brains. Classification methods for brain structural MRI use scales and visual cues to assess hemisphere symmetry, which can help diagnose neonatal patients by comparing hemispheres and anatomical regions of interest in the brain. Using the Developing Human Connectome Project dataset, this work presents a dataset comprising cerebral images extracted as slices across selected portions of interest for clinical evaluation . All the extracted images are annotated with the brain’s midline. All the extracted images are annotated with the brain’s midline. From the assumption that a decrease in symmetry is directly related to possible clinical pathologies, the dataset can contribute to a more precise diagnosis because it can be used to train deep learning model application in neonatal cerebral MRI anomaly detection from postnatal infant scans thanks to computer vision. Such models learn to identify and classify anomalies by identifying potential asymmetrical patterns in medical MRI images. Furthermore, this dataset can contribute to the research and development of methods using the relative symmetry of the two brain hemispheres for crucial diagnosis and treatment planning. Copyright © 2024, The Authors. All rights reserved.

关键词： Magnetic resonance imaging

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Uncertainty relations from state polynomial optimization

arXiv

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arXiv 2023年

作者： Morán, Moisés Bermejo Huber, Felix Faculty of Physics Astronomy and Applied Computer Science Institute of Theoretical Physics Jagiellonian University Kraków30-348 Poland University of Bordeaux 351 cours de la Liberation Talence33405 France

Uncertainty relations are a fundamental feature of quantum mechanics. How can these relations be found systematically? Here we develop a semidefinite programming hierarchy for additive uncertainty relations in the variances of non-commuting observables. Our hierarchy is built on the state polynomial optimization framework, also known as scalar extension. The hierarchy is complete, in the sense that it converges to tight uncertainty relations. We improve upon upper bounds for all 1292 additive uncertainty relations on up to nine operators for which a tight bound is not known. The bounds are dimension-free and depend entirely on the algebraic relations among the operators. The techniques apply to a range of scenarios, including Pauli, Heisenberg-Weyl, and fermionic operators, and generalize to higher order moments and multiplicative uncertainty relations. Copyright © 2023, The Authors. All rights reserved.

关键词： Polynomials

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Acoustic cavitation bubble under influence of frequency ultrasound: Numerical analysis

Acoustic cavitation bubble under influence of frequency ultr...

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Electronic Engineering (ICEEM), International Conference on

作者： A. K. Abu-Nab A. F. Abu-Bakr Zain AbuShaeer Department of Mathematics and Computer Science Faculty of Science Menoufia University Shebin 32511 Egypt Phystech School of Applied Mathematics and Informatics Moscow Institute of Physics and Technology Moscow Russia Department of Mathematics and Computer Science Faculty of Science Menoufia University Shebin El-Koom Egypt Department of Basic Science Higher Institute of Engineering and Technology Kafrelsheikh Egypt

This work presents a numerical investigation of acoustic cavitation in Newtonian fluid based on frequency ultrasound. The model of ultrasonic cavitation dynamics is formulated by a modified Rayleigh-Plesset equation and an acoustic pressure equation. The exponential B-Spline collection method was employed to obtain the numerical solutions of the given cavitation bubble model, considering the effect of acoustic pressure. The behaviour of the cavitation microbubbles' radius and the internal pressure of acoustic cavitation were examined at different values of frequencies. The obtained results reveal the importance of frequencies in ultrasound, which play a vital role in changing the behaviour of cavitation bubbles.

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Periodic charge oscillations in the Proca theory

arXiv

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arXiv 2022年

作者： Damski, Bogdan Jagiellonian University Faculty of Physics Astronomy and Applied Computer Science Institute of Theoretical Physics Lojasiewicza 11 Kraków30-348 Poland

We consider the Proca theory of the real massive vector field. There is a locally conserved 4-current operator in such a theory, which one may use to define the charge operator. Accordingly, there are charged states in which the expectation value of the charge operator is non-zero. We take a close look at the charge operator and study the dynamics of the certain class of charged states. For this purpose, we discuss the mean electric field and 4-current in such states. The mean electric field has the periodically oscillating Coulomb component, whose presence explains the periodic charge oscillations. A complementary insight at such a phenomenon is provided by the mean 4-current, whose discussion leads to the identification of a certain paradox. Last but not least, we show that there is a shock wave propagating in the studied system, which affects analyticity of the mean electric field and 4-current. Copyright © 2022, The Authors. All rights reserved.

关键词： Shock waves

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Three favorite dimensions of Andrzej Kossakowski: along his path to a scientific discovery

arXiv

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arXiv 2022年

作者： Życzkowski, Karol Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University Cracow Poland Center for Theoretical Physics Polish Academy of Sciences Warsaw Poland

Some achievements of the late Andrzej Kossakowski in the field of statistical physics and quantum theory are presented. We recall his attempt to find an analytical solution of the 3-dimensional Ising model and present... 详细信息

关键词： Quantum theory

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Structural investigation of the liquid crystalline phases of three homologues from the nOS5 series (n = 9, 10, 11) by X-ray diffraction

arXiv

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arXiv 2024年

作者： Deptuch, Aleksandra Sęk, Bartosz Lalik, Sebastian Ossowska-Chruściel, Miroslawa D. Chruściel, Janusz Marzec, Monika Institute of Nuclear Physics Polish Academy of Sciences Radzikowskiego 152 KrakówPL-31342 Poland Faculty of Physics and Applied Computer Science AGH University of Kraków Reymonta 19 KrakówPL-30059 Poland Institute of Physics Jagiellonian University Lojasiewicza 11 KrakówPL-30348 Poland Institute of Chemistry Siedlce University of Natural Sciences and Humanities 3 Maja 54 SiedlcePL-08110 Poland

Polarizing optical microscopy and differential scanning calorimetry are used to determine the phase sequence of three liquid crystalline 4-pentylphenyl-4’-n-alkyloxythiobenzoates with n = 9, 10, 11. The X-ray diffraction method is applied for structural characterization of the liquid crystalline phases. The smectic layer spacing, tilt angle, average distance between the long axes of molecules and correlation length of the short-range order are determined as a function of temperature. For the crystal-like smectic phases with the hexagonal or herring-bone packing, the unit cell parameters are obtained. The presence of the tilted hexagonal phase for n = 10, 11 and tilted herring-bone phase for n = 9, 10 is indicated, although the direction of the tilt cannot be determined. © 2024, CC BY.

关键词： Bone

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