cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 2 of A novel tsRNA-16902 regulating the adipogenic differentiation of human bone marrow mesenchymal stem cells
Creators: name: Wang, Tao
name: Mei, Jun
name: Li, Xingnuan
name: Xu, Xiaoyuan
name: Ma, Baicheng
name: Li, Weidong
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2.
Are Cen a and M87 Tev Gamma-Ray Sources?
Creators: name: Bai, J. M.
name: Lee, Myung Gyoon
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we identify Cen A and M87, two nearby Fanaroff-Riley I (FRI) radio galaxies, with high-energy-peaked BL Lac-like (HBL-like) objects by investigating their spectral energy distributions (SEDs). The SED peak of Cen A at $\sim$150 keV, which was generally believed to be the peak of inverse-Compton emission as in the case of 3C 273, is found to be actually the peak of synchrotron emission. The synchrotron emission of M87 peaks in the far UV band. We summarize the properties of $γ$-ray-loud blazars, especially those of TeV BL Lac objects, and generalize them to HBL-like FRI radio galaxies according to the unified scheme of BL Lac objects and FRI radio galaxies. We infer that Cen A may have a peak in its Compton component power output at $\sim$1 TeV, and that M87 may have a Compton emission peak at $\sim$0.1 TeV. For Cen A, the estimated TeV $γ$-ray flux during outburst is F(0.25 $-$ 30 TeV) = 6.4$\times10^{-9}$ erg cm$^{-2}$s$^{-1}$, and for M87, F(0.25 $-$ 30 TeV) = 1.1$\times10^{-11}$ erg cm$^{-2}$s$^{-1}$. Both fluxes are detectable by TeV detectors available today, and hence Cen A and M87 are TeV $γ$-ray source candidates. By investigating the long term variability, we predict that Cen A will undergo an outburst in the near future and will be detectable at the TeV $γ$-ray energy range using the CANGAROO and the German-French-Italian experiment HESS TeV $γ$-ray telescopes.
description: 5 pages, 1 figure, accepted by ApJ Letters
Domain wall-based spin-Hall nano-oscillators
Creators: name: Sato, N.
name: Schultheiss, K.
name: Körber, L.
name: Puwenberg, N.
name: Mühl, T.
name: Awad, A. A.
name: Arekapudi, S. S. P. K.
name: Hellwig, O.
name: Fassbender, J.
name: Schultheiss, H.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the last decade, two revolutionary concepts in nano magnetism emerged from research for storage technologies and advanced information processing. The first suggests the use of magnetic domain walls (DWs) in ferromagnetic nanowires to permanently store information in DW racetrack memories. The second proposes a hardware realisation of neuromorphic computing in nanomagnets using nonlinear magnetic oscillations in the GHz range. Both ideas originate from the transfer of angular momentum from conduction electrons to localised spins in ferromagnets, either to push data encoded in DWs along nanowires or to sustain magnetic oscillations in artificial neurones. Even though both concepts share a common ground, they live on very different time scales which rendered them incompatible so far. Here, we bridge both ideas by demonstrating the excitation of magnetic auto-oscillations inside nano-scale DWs using pure spin currents.
Direct photoluminescence probing of ferromagnetism in monolayer two-dimensional CrBr3
Creators: name: Zhang, Zhaowei
name: Shang, Jingzhi
name: Jiang, Chongyun
name: Rasmita, Abdullah
name: Gao, Weibo
name: Yu, Ting
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Atomically thin magnets are the key element to build up spintronics based on two-dimensional materials. The surface nature of two-dimensional ferromagnet opens up opportunities to improve the device performance efficiently. Here, we report the intrinsic ferromagnetism in atomically thin monolayer CrBr3, directly probed by polarization resolved magneto-photoluminescence. The spontaneous magnetization persists in monolayer CrBr3 with a Curie temperature of 34 K. The development of magnons by the thermal excitation is in line with the spin-wave theory. We attribute the layer-number dependent hysteresis loops in thick layers to the magnetic domain structures. As a stable monolayer material in air, CrBr3 provides a convenient platform for fundamental physics and pushes the potential applications of the two-dimensional ferromagnetism.
description: 27 pages, 10 figures
ANOVA FOR ALL OF THE PARTICIPANTS (all exams)
Creators: name: Castillo, María Fernanda Salgado
Publisher: name: figshare
Year: 2019
Subjects: subject: Cardiology
subject: 110201 Cardiology (incl. Cardiovascular Diseases)
subject: FOS: Clinical medicine

description: ANOVA results of all participants including: First written exam, Second written exam, First practical exam, second practical exam, T test written exam, T test practical exam, T test emergencies and disasters (written and practical), T test anesthesiology (written and practical), T test critical medicine (written and practical)
Study on Morphological Diversity of Some Tephrosia Species (Fabaceae) in Saudi Arabia
Creators: name: Al-Ghamdi, Faraj A.
Publisher: name: Zenodo
Year: 2021
Subjects: Morphology
Tephrosia
Fabaceae
Saudi Arabia

description: Morphological characteristics of nine wild Tephrosia PERS species growing in Saudi Arabia were extensively studied in order to support diversity and simplify identification of these species. The macro and micro morphological features of the stem, leaves, flowers, and pods were studied. The most important characteristics used to make a distinction Saudi Arabia Tephrosia species were pod shape, colour, size, dehiscence and number of seeds per pod, inflorescence position, flower opening, shape of the upper 2 teeth of calyx, shape of sepals apex, shape of wings, length of hairs on ovary, direction of staminal tube tip, leaflets shape and surface, stem habit form and life spin. A key for the identification of the investigated species based on these morphological features is provided. Plant morphology has served largely for systematics, using morphological characteristics to carve up diversity into its systematic sub-units.
Collective excitation spectrum of a disordered Hubbard model
Creators: name: Szczech, Yolande H.
name: Tusch, Michael A.
name: Logan, David E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the collective excitation spectrum of a d=3 site-disordered Anderson-Hubbard model at half-filling, via a random-phase approximation (RPA) about broken-symmetry, inhomogeneous unrestricted Hartree-Fock (UHF) ground states. We focus in particular on the density and character of low-frequency collective excitations in the transverse spin channel. In the absence of disorder, these are found to be spin-wave-like for all but very weak interaction strengths, extending down to zero frequency and separated from a Stoner-like band, to which there is a gap. With disorder present, a prominent spin-wave-like band is found to persist over a wide region of the disorder-interaction phase plane in which the mean-field ground state is a disordered antiferromagnet, despite the closure of the UHF single-particle gap. Site resolution of the RPA excitations leads to a microscopic rationalization of the evolution of the spectrum with disorder and interaction strength, and enables the observed localization properties to be interpreted in terms of the fraction of strong local moments and their site-differential distribution.
description: 25 pages (revtex), 9 postscript figures
RegEl corpus: identifying DNA regulatory elements in the scientific literature
Creators: name: Garda, Samuele
name: Lenihan-Geels, Freyda
name: Proft, Sebastian
name: Hochmuth, Stefanie
name: Schülke, Markus
name: Seelow, Dominik
name: Leser, Ulf
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: 570 Biologie
subject: 004 Informatik

description: High-throughput technologies led to the generation of a wealth of data on regulatory DNA elements in the human genome. However, results from disease-driven studies are primarily shared in textual form as scientific articles. Information extraction (IE) algorithms allow this information to be (semi-)automatically accessed. Their development, however, is dependent on the availability of annotated corpora. Therefore, we introduce RegEl (Regulatory Elements), the first freely available corpus annotated with regulatory DNA elements comprising 305 PubMed abstracts for a total of 2690 sentences. We focus on enhancers, promoters and transcription factor binding sites. Three annotators worked in two stages, achieving an overall 0.73 F1 inter-annotator agreement and 0.46 for regulatory elements. Depending on the entity type, IE baselines reach F1-scores of 0.48–0.91 for entity detection and 0.71–0.88 for entity normalization. Next, we apply our entity detection models to the entire PubMed collection and extract co-occurrences of genes or diseases with regulatory elements. This generates large collections of regulatory elements associated with 137 870 unique genes and 7420 diseases, which we make openly available.Database URL: https://zenodo.org/record/6418451#.YqcLHvexVqg
Hamiltonians for a general dilaton gravity theory on a spacetime with a non-orthogonal, timelike or spacelike outer boundary
Creators: name: Cadoni, M.
name: Mana, P. G. L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A generalization of two recently proposed general relativity Hamiltonians, to the case of a general (d+1)-dimensional dilaton gravity theory in a manifold with a timelike or spacelike outer boundary, is presented.
description: 17 pages, 3 figures. Typos corrected
Coherent anti-Stokes Raman Spectroscopy of single and multi-layer graphene
Creators: name: Virga, A.
name: Ferrante, C.
name: Batignani, G.
name: De Fazio, D.
name: Nunn, A. D. G.
name: Ferrari, A. C.
name: Cerullo, G.
name: Scopigno, T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report stimulated Raman spectroscopy of the G phonon in both single and multi-layer graphene, through Coherent anti-Stokes Raman Scattering (CARS). The signal generated by the third order nonlinearity is dominated by a vibrationally non-resonant background (NVRB), which obscures the Raman lineshape. We demonstrate that the vibrationally resonant CARS peak can be measured by reducing the temporal overlap of the laser excitation pulses, suppressing the NVRB. We model the observed spectra, taking into account the electronically resonant nature of both CARS and NVRB. We show that CARS can be used for graphene imaging with vibrational sensitivity.
description: 10 pages, 5 figures
A Detailed Study on the Floral Biology and Fruiting of Cycad circinalis in Nigeria
Creators: name: J. O. Odewale
name: Agho Collins
name: E. I. Eziashi
Publisher: name: Zenodo
Year: 2021
Subjects: Cycas
gymnospermous
cone and cycasin

description: The Cycas circinalis was first officially introduced into Nigeria by the Nigerian Institute for Oil Palm Research (NIFOR), Benin City. Cycas circinalis has adapted well as an ornamental crop in Nigeria. It belongs to the Division: Cycadophyta, Class: Cycadopsida, Order Cycadales, family Cycadaceae and genera Cycas. It was first recognized as a separate species in 1995. It is also known as Sago palm, Fern palm, Cycad or Starch palm. The floral biology of the plant is cone like as other cones in the Order Cycadales, the cone has the whorl of premature pinnate fronds embedded within the cone. This cone opens up and spreads out as the inflorescence reaches anthesis revealing the whorl of young leaves that will form the new generation crown. The mean number of fully formed fruits per stalk is 9.0 average fruit length is 5.24 cm, fruit circumference ranged from 8.6-9.6 cm while the average circumference is 9.03. Fruit weight range between 19.2 – 22.10 g (mean = 21.6 g), the length of dehusked fruit vary from 4.1 – 5.0 cm, while the circumference of the dehusked fruit range between 7.1 – 8.0 cm. The average circumference of dehusked fruit was 7.53 cm. The weight of the dehusked fruit range between 9.7– 18.6 g, with a mean weight of 13.9 g.
Deep learning approach to coherent noise reduction in optical diffraction tomography
Creators: name: Choi, Gunho
name: Ryu, Donghun
name: Jo, Youngju
name: Kim, Youngseo
name: Park, Weisun
name: Min, Hyun-Seok
name: Park, Yongkeun
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We present a deep neural network to reduce coherent noise in three-dimensional quantitative phase imaging. Inspired by the cycle generative adversarial network, the denoising network was trained to learn a transform between two image domains: clean and noisy refractive index tomograms. The unique feature of this network, distinct from previous machine learning approaches employed in the optical imaging problem, is that it uses unpaired images. The learned network quantitatively demonstrated its performance and generalization capability through denoising experiments of various samples. We concluded by applying our technique to reduce the temporally changing noise emerging from focal drift in time-lapse imaging of biological cells. This reduction cannot be performed using other optical methods for denoising.
Soliton Lattices in the Incommensurate Spin-Peierls Phase: Local Distortions and Magnetizations
Creators: name: Uhrig, Goetz S.
name: Schoenfeld, Friedhelm
name: Boucher, Jean-Paul
name: Horvatic, Mladen
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: It is shown that nonadiabatic fluctuations of the soliton lattice in the spin-Peierls system CuGeO_3 lead to an important reduction of the NMR line widths. These fluctuations are the zero-point motion of the massless phasonic excitations. Furthermore, we show that the discrepancy of X-ray and NMR soliton widths can be understood as the difference between a distortive and a magnetic width. Their ratio is controlled by the frustration of the spin system. By this work, theoretical and experimental results can be reconciled in two important points.
description: 9 pages, 5 figures included, Revtex submitted to Physical Review B
Additional file 1: of Overexpression of CLC-3 is regulated by XRCC5 and is a poor prognostic biomarker for gastric cancer
Creators: name: Gu, Zhuoyu
name: Li, Yixin
name: Yang, Xiaoya
name: Yu, Meisheng
name: Chen, Zhanru
name: Zhao, Chan
name: Chen, Lixin
name: Wang, Liwei
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology

description: Table S1. The truncated promoter regions of CLC-3 were designed with primer pairs as follows. (DOCX 29 kb)
Learning across distances: an international collaborative learning project between Berlin and Turku
Creators: name: Hautala, Johanna
name: Suntje Schmidt
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Many geographers graduating from universities enter an international and project-based professional life, which includes working in geographically dispersed project teams. In Europe, the Bologna process aligned study programs and supported student mobility to prepare students for such a work environment. However, research on higher education has reported few examples of international courses that include collaborative learning during which students have experience of both co-location and geographical dispersion. This paper reports on a pilot course that implemented international student-led research projects in two Geography Departments: the Humboldt-Universität zu Berlin and the University of Turku. We monitored the students’ learning processes via a survey that was administered at the beginning, middle and end of the course, complemented by observations, informal discussions and student team reports. We analysed the survey and observations within a proximity-distance framework to identify the key challenges and good practices for supporting collaborative learning. We developed a model for organising an international course that applies both geographical distance and co-location.
title: Σχεδιασμός και ανάπτυξη πρωτότυπης εκπαιδευτικής πλατφόρμας STEM (Science,
Technology, Engineering and Mathematics)
title: Design and development of a prototype STEM education platform (Science, Technology, Engineering and Mathematics)

Creators: name: Κακαρας Γεωργιος
Publisher: name: Technical University of Crete
Year: 2021

description: Στόχος της παρούσας εργασίας είναι η δημιουργία εκπαιδευτικής πλατφόρμας STEM, η οποία αποτελείται από κατάλληλα διαμορφωμένο υλικό και λογισμικό για τη διδασκαλία εννοιών πληροφορικής και υλοποίησης απλών αυτοματισμών. Η πλατφόρμα είναι προσαρμοσμένη στις ανάγκες της Δευτεροβάθμιας και Πρωτοβάθμιας Εκπαίδευσης, με κύρια ηλικιακή στόχευση τις ηλικίες 9-15. To προτεινόμενο σύστημα βασίστηκε στο Hydra, μια καινοτόμα πλατφόρμα χαμηλού κόστους που έχει δοκιμαστεί με επιτυχία στη πρωτοβάθμια εκπαίδευση. Η βασική συνεισφορά της παρούσας εργασίας, είναι ο καινοτόμος σχεδιασμός που αποτελεί μια νέα πρόταση συνδεσμολογίας, προσαρμογής και φυσικής αλληλεπίδρασης των δομικών στοιχείων. Ο συγκεκριμένος σχεδιασμός
επιτρέπει τη δημιουργία πρωτότυπων ρομποτικών συσκευών και αυτοματισμών,
ενθαρρύνοντας τη δημιουργική σκέψη των μαθητών. Στην παρούσα εργασία
αναπτύχθηκαν νέα αρθρώματα, πραγματοποιήθηκε μελέτη αντοχής και λειτουργικότητας και αναπτύχθηκαν συγκεκριμένα μαθησιακά σενάρια. Τα αρθρώματα κατασκευάστηκαν με χρήση τρισδιάστατης εκτύπωσης και μελετήθηκε διεξοδικά η λειτουργικότητά τους.
description: The aim of this work is to develop a novel platform for STEM based education, to enhance the teaching process of ICT and automation. The target group of the proposed platform is students in ages ranging from 9-15 years old. The proposed system was based on the Hydra platform, a low-cost platform for STEM education, which has been used with encouraging results in the primary education. The main contribution of this work was the novel design which allowed the easy and intuitive assembly of robotic devices and simple automations, encouraging the creativity of the students. New modular components (with and without electronic parts) were developed and thoroughly tested in terms of functionality and robustness. All the aforementioned devices were created using 3D printing techniques.
Dark Sector Physics with Belle II - First results and prospects
Creators: name: Komarov, Ilya
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019

description: 8th International Conference on New Frontiers in Physics, ICNFP 2019, Kolumbari, Conference Center of the Orthodox Academy of Creta (OAC), Greece, 21 Aug 2019 - 29 Aug 2019
Recent Advances in the Use of the SNAP-tag® in the Modern Biotechnology
Creators: name: Merlo, Rosa
name: Mattossovich, Rosanna
name: Valenti, Anna
name: Perugino, Giuseppe
Publisher: name: Zenodo
Year: 2021
Subjects: Protein-tag
protein labelling
enzymatic reaction
click-chemistry
biotechnology

description: Alkylguanine-DNA-alkyltransferases (AGTs) have a natural role in the protection of DNA from mutations caused by alkylating agents. Their peculiar irreversible self-alkylation reaction led to the development as new tools in the modern biotechnology. SNAP-tag® is a powerful enzyme for the specific labelling of protein/enzymes by using benzyl-guanine (BG) derivatives as substrates. This technology has some limitations, as the mesophilic nature of the tag (an engineered variant of the human enzyme) and the needs of purify each substrate. Recently, the SNAP-tag® technology was successfully implemented by the employment of thermostable “SNAP-tag-like” variants from (hyper)thermophilic sources, and by the utilization of BG-substrates containing an azide group to be combined with DBCO-derivatives by azide-alkyne Huisgen cycloaddition. The introduction of these new actors on the scene made possible the expansion of the methodology to in vivo and in vitro harsh reaction conditions, as well as the utilization of more chemical groups in the overall reaction enzyme labelling.
Physics-informed machine learning to model rapid complex geohazards
Creators: name: Yildiz, Anil
name: Zhao, Hu
name: Kowalski, Julia
Publisher: name: RWTH Aachen University
Year: 2022

description: Abstracts & presentations / EGU General Assembly 2022 EGU General Assembly 2022, EGU 2022, Vienna, Austria, 23 May 2022 - 27 May 2022; Göttingen : Copernicus Gesellschaft mbH EGU22-2682 (2022). doi:10.5194/egusphere-egu22-2682
description: Published by Copernicus Gesellschaft mbH, Göttingen
Closed ideal planar curves
Creators: name: Andrews, Ben
name: McCoy, James
name: Wheeler, Glen
name: Wheeler, Valentina-Mira
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C44, 58J35

description: In this paper we use a gradient flow to deform closed planar curves to curves with least variation of geodesic curvature in the $L^2$ sense. Given a smooth initial curve we show that the solution to the flow exists for all time and, provided the length of the evolving curve remains bounded, smoothly converges to a multiply-covered circle. Moreover, we show that curves in any homotopy class with initially small $L^3\lVert k_s\rVert_2^2$ enjoy a uniform length bound under the flow, yielding the convergence result in these cases.
description: 25 pages
A new look into putative duplicity and pulsations of the Be star $β$ CMi
Creators: name: Harmanec, P.
name: Svanda, M.
name: Korcakova, D.
name: Chini, R.
name: Nasseri, A.
name: Yang, S.
name: Bozic, H.
name: Slechta, M.
name: Vanzi, L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Bright Be star beta CMi has been identified as a non-radial pulsator on the basis of space photometry with the MOST satellite and also as a single-line spectroscopic binary with a period of 170.4 d. The purpose of this study is to re-examine both these findings, using numerous electronic spectra from the Dominion Astrophysical Observatory, Ondřejov Observatory, Universitätssterwarte Bochum, archival electronic spectra from several observatories, and also the original MOST satellite photometry. We measured the radial velocity of the outer wings of the double Halpha emission in all spectra at our disposal and were not able to confirm significant radial-velocity changes. We also discuss the problems related to the detection of very small radial-velocity changes and conclude that while it is still possible that the star is a spectroscopic binary, there is currently no convincing proof of it from the radial-velocity measurements. Wavelet analysis of the MOST photometry shows that there is only one persistent (and perhaps slightly variable) periodicity of 0.617 d of the light variations, with a double-wave light curve, all other short periods having only transient character. Our suggestion that this dominant period is the star's rotational period agrees with the estimated stellar radius, projected rotational velocity and with the orbital inclination derived by two teams of investigators. New spectral observations obtained in the whole-night series would be needed to find out whether some possibly real, very small radial-velocity changes cannot in fact be due to rapid line-profile changes.
description: Accepted for publication in the Astrophysical Journal; 26 pages, 13 Figures
Bilateral medial tibial plateau stress fracture on a treadmill in a healthy man immediately after COVID-19 lockdown
Creators: name: Borlandelli, Elena
name: Marzocchi, Guido
name: Monteduro, Francesco
Publisher: name: figshare
Year: 2021
Subjects: subject: 110320 Radiology and Organ Imaging
subject: FOS: Clinical medicine

description: Stress fractures are usually caused by overuse of the weight-bearing extremities. The tibia is a frequently involved site and most stress fractures occur when sedentary lifestyle is suddenly changed to active training regimen. Thus clinicians and radiologists should always be aware of this entity even in healthy, young individuals. We describe the case of a 42-year-old man presenting with bilateral medial tibial plateau stress fractures after running on a treadmill immediately after 69 days of inactive COVID-19 lockdown in Italy.
High-sensitivity high-speed compressive spectrometer for Raman imaging
Creators: name: Sturm, Benneth
name: Soldevila, Fernando
name: Tajahuerce, Enrique
name: Gigan, Sylvain
name: Rigneault, Herve
name: de Aguiar, Hilton B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Compressive Raman is a recent framework that allows for large data compression of microspectroscopy during its measurement. Because of its inherent multiplexing architecture, it has shown imaging speeds considerably higher than conventional Raman microspectroscopy. Nevertheless, the low signal-to-noise (SNR) of Raman scattering still poses challenges for high-sensitivity bio-imaging exploiting compressive Raman: (i) the idle solvent acts as a background noise upon imaging small biological organelles, (ii) current compressive spectrometers are lossy precluding high-sensitivity imaging. We present inexpensive high-throughput spectrometer layouts for high-sensitivity compressive hyperspectroscopy. We exploit various modalities of compressive Raman allowing for up to 80X reduction of data storage and 2X microspectroscopy speed up at a 230-nm spatial resolution. Such achievements allowed us to chemically image sub-diffraction-limited biological specimens (lipid bilayers) in few seconds.
The Hipparcos observations and the mass of sub-stellar objects
Creators: name: Pourbaix, D.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Hipparcos Intermediate Astrometric Data have been used lately to estimate the inclination of the orbital plane of candidate extrasolar planets. Whereas most of these investigations derive almost face-on orbits, we show that the astrometric data are seldom precise enough to undertake such studies and that the `face-on' result might be just a spurious effect of the method.
description: Accepted for publication in A&A Letters
Universality of phase transitions of frustrated antiferromagnets
Creators: name: Kawamura, Hikaru
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recent theoretical and experimental studies on the critical properties of frustrated antiferromagnets with the noncollinear spin order, including stacked-triangular antiferromagnets and helimagnets, are reviewed. Particular emphasis is put on the novel critical and multicritical behaviors exhibited by these magnets, together with an important role played by the `chirality'.
description: 52 pages, figures and tables not included, plain Tex, to appear as topical review in J. Phys. Condens. Matter, vol.10, 4707-4754, 1998
A Toeplitz-like operator with rational symbol having poles on the unit circle III: the adjoint
Creators: name: Groenewald, G. J.
name: Ter Horst, S.
name: Jaftha, J.
name: Ran, A. C. M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47B35, 47A53, 47A68

description: This paper contains a further analysis of the Toeplitz-like operators $T_ω$ on $H^p$ with rational symbol $ω$ having poles on the unit circle that were previously studied in [5.6]. Here the adjoint operator $T_ω^*$ is described. In the case where $p=2$ and $ω$ has poles only on the unit circle $\mathbb{T}$, a description is given for when $T_ω^*$ is symmetric and when $T_ω^*$ admits a selfadjoint extension. Also in the case where $p=2$, $ω$ has only poles on $\mathbb{T}$ and in addition $ω$ is proper, it is shown that $T_ω^*$ coincides with the unbounded Toeplitz operator defined by Sarason in [10].
description: 19 pages
From semiconductors to superconductors: a simple model for pseudogaps
Creators: name: Nozieres, P.
name: Pistolesi, F.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider a two dimensional semiconductor with a local attraction among the carriers. We study the ground state of this system as a function of the semiconductor gap. We find a direct transition from a superconducting to an insulating phase for no doping at a critical value, the single particle excitations being always gapped. For finite doping we find a smooth crossover. We calculate the critical temperature due to both the particle excitations and the Berezinkii-Kosterlitz-Thouless transition.
description: 14 pages. Accepted for publication on Eur. Phys. Jour. B
Bilateral medial tibial plateau stress fracture on a treadmill in a healthy man immediately after COVID-19 lockdown
Creators: name: Marzocchi, Guido
name: Borlandelli, Elena
name: Monteduro, Francesco
Publisher: name: figshare
Year: 2021
Subjects: subject: 110320 Radiology and Organ Imaging
subject: FOS: Clinical medicine

description: Stress fractures are usually caused by overuse of the weight-bearing extremities. The tibia is a frequently involved site and most stress fractures occur when sedentary lifestyle is suddenly changed to active training regimen. Thus clinicians and radiologists should always be aware of this entity even in healthy, young individuals. We describe the case of a 42-year-old man presenting with bilateral medial tibial plateau stress fractures after running on a treadmill immediately after 69 days of inactive COVID-19 lockdown in Italy.
Relativity and Nonlocality
Creators: name: Mashhoon, Bahram
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The basic physical structure of the relativistic theory of gravitation is discussed. The significant role that the Hypothesis of Locality plays in relativity theory is elucidated via the phenomenon of spin-rotation coupling. The limitations of this hypothesis are critically examined. A nonlocal theory of accelerated observers is presented and some of its observational consequences are described.
description: LaTeX file, no figures, 12 pages, Plenary talk given at EREs2000 (Valladolid, Spain, 6-9 September 2000); to be published in Proc. Spanish Relativity Meeting, edited by J.-F. Pascual-S\'anchez, L. Flor\'\ia, A. San Miguel, and F. Vicente (World Scientific, 2001)
Dressed Bose-Einstein Condensates in High-Q Cavities
Creators: name: Goldstein, E. V.
name: Wright, E. M.
name: Meystre, P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We propose and analyze a way in which effective multicomponent condensates can be created inside high-Q multimode cavities. In contrast to the situation involving several atomic species or levels, the coupling between the various components of the dressed condensates is linear. We predict analytically and numerically confirm the onset of instabilities in the quasiparticle excitation spectrum.
description: plain tex, 20 pages, 4 figures
Assessment of Culture Potentialities of Hybrids from Crosses between Oreochromis niloticus and Sarotherodon melanotheron Reared in Ebrié Lagoon (Côte d'Ivoire) Using Geometric Morphometric Approach: An Advance Study
Creators: name: Z. S. O. Bopo
name: D. P. Sokouri
name: Y. N. Amon
name: A. C. Boua
name: N. S. P. Assanvo
Publisher: name: Zenodo
Year: 2021
Subjects: Geometric morphometric
hybrids
landmarks
heterosis
body shape

description: Culture potentialities of the hybrids from crosses between Oreochromis niloticus (Linnaeus, 1758) and Sarotherodon melanotheron (Rüppel, 1852) were assessed in breeding design through morphological features using geometric morphometric approach. The crosses and rearing procedure, that lasted six months, are performed into a concrete pond at Layo Aquaculture Station. The morphological studies were undertaken with morphometric biomarkers such as average body shape and components of developmental homeostasis (canalisation and developmental stability). Average body shape between groups was investigated using Relative Warps Analysis (RWA) and Canonical Variates Analysis (CVA), whereas canalisation and fluctuating asymmetry were evaluated from ANOVA Procrustes. The results showed that the body shape of the hybrids is intermediate between those of the two parental species and that the reciprocal hybrids of first generation exhibit heterosis in size. Heterosis effects also seem affect positively fluctuating asymmetry and canalisation levels, which mirror developmental compatibilities between hybridising taxa. This hybrid vigor appeared more on the hybrids resulting from crosses between S. melanotheron males and O. niloticus females. In a general way, the morphology of the head of the hybrids is similar to that of the parent O. niloticus and their fins resembled to those of the parent S. melanotheron. Moreover, fluctuating asymmetry in shape does not vary between parental species and hybrids, contrary to fluctuating asymmetry in size, which is lesser in latter. Canalisation was found to be smaller in the hybrids compared to the parental ones. So, these results revealed that the hybrids could benefit from most of accrued advantages of parental species.
Kitaev-like honeycomb magnets: Global phase behavior and emergent effective models
Creators: name: Rusnačko, Juraj
name: Gotfryd, Dorota
name: Chaloupka, Jiří
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Compounds of transition metal ions with strong spin-orbit coupling recently attracted attention due to the possibility to host frustrated bond-dependent anisotropic magnetic interactions. In general, such interactions lead to complex phase diagrams that may include exotic phases, e.g. the Kitaev spin liquid. Here we report on our comprehensive analysis of the global phase diagram of the extended Kitaev-Heisenberg model relevant to honeycomb lattice compounds Na2IrO3 and alpha-RuCl3. We have utilized recently developed method based on spin coherent states that enabled us to resolve arbitrary spin patterns in the cluster ground states obtained by exact diagonalization. Global trends in the phase diagram are understood in combination with the analytical mappings of the Hamiltonian that uncover peculiar links to known models - Heisenberg, Ising, Kitaev, or compass models on the honeycomb lattice - or reveal entire manifolds of exact fluctuation-free ground states. Finally, our study can serve as a methodological example that can be applied to other spin models with complex bond-dependent non-Heisenberg interactions.
description: 18 pages, 10 figures
Retrieval dynamics of neural networks for sparsely coded sequential patterns
Creators: name: Kitano, Katsunori
name: Aoyagi, Toshio
Publisher: name: arXiv
Year: 1998
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantitative Biology (q-bio)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: It is well known that a sparsely coded network in which the activity level is extremely low has intriguing equilibrium properties. In the present work, we study the dynamical properties of a neural network designed to store sparsely coded sequential patterns rather than static ones. Applying the theory of statistical neurodynamics, we derive the dynamical equations governing the retrieval process which are described by some macroscopic order parameters such as the overlap. It is found that our theory provides good predictions for the storage capacity and the basin of attraction obtained through numerical simulations. The results indicate that the nature of the basin of attraction depends on the methods of activity control employed. Furthermore, it is found that robustness against random synaptic dilution slightly deteriorates with the degree of sparseness.
description: 9 pages including 4 EPSF figures, latex209, ref[21] is modefied
A systematic review of the impact of adjusting input dynamic range (IDR), electrical threshold (T) level and rate of stimulation on speech perception ability in cochlear implant users
Creators: name: Nunn, Terry B.
name: Jiang, Dan
name: Green, Tim
name: Boyle, Patrick J.
name: Vickers, Deborah A.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Objective: To systematically review the evidence of how adjustments of the electrical threshold (T) level, input dynamic range (IDR) and electrical stimulation rate impact on speech perception for cochlear implant (CI) users. Design: Systematic review. Study sample: A search of two electronic data sources yielded 32 studies, which met the inclusion criteria. A quality assessment and two evidence-based practice (EBP) review rating schemes were used to grade studies. Results: Due to the heterogeneity of speech perception measures, CI device type and study design, comparisons were made by structured review. Conclusion: The quality of studies was found to be moderate to poor. Increasing T levels above behavioural threshold, or as a proportion of electrical dynamic range (EDR), has been demonstrated to improve perception of monosyllables in quiet and sentences in both quiet and in noise. Specific IIDR and IDR setting may improve perception of monosyllables in quiet and sentences in noise. However, no recommendation could be determined for setting rate of stimulation as speech perception varied significantly across rates examined. To optimise speech perception, a bespoke approach to parameter setting providing an individualised CI fitting is recommended; however, detail of how to optimise settings and the interactions between parameters is as yet unknown.
Synthesis and characterization of novel chiral imidazolium and pyridinium ionic liquids derived from tartaric acid and 2-oxazolidinone
Creators: name: Nehate, Sagar P.
name: Himanshu M. Godbole
name: Girij P. Singh
name: Mathew, Jessy E.
name: Gautham G. Shenoy
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Plant Biology

description: Novel chiral imidazolium and pyridinium ionic liquids based on tartaric acid and 2-oxazolidinone were designed. Symmetrical dicationic ionic liquids based on tartaric acid have been synthesized and characterized. These chiral ionic liquids were designed by employing very short and simple methods. Incorporation of alkyl halide over tartaric acid and 2-oxazolidinone is an important step. N-methyl imidazole and pyridine were used for preparation of quaternary salts. These ionic liquids have been evaluated for the asymmetric sulfide oxidation. Chiral ionic liquids based on tartaric acid showed superior chiral inducing property as compare to 2-oxazolidinone based chiral ionic liquids.
Efficient and stereoselective synthesis of thiosulfinates from disulfide using cumene hydroperoxide in the presence of titanium-based catalyst systems
Creators: name: Pengju Sun
name: Jiansheng Huang
name: Jinyi Xu
name: Niefang Yu
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology

description: An efficient and stereoselective procedure of oxidizing disulfide to thiosulfinate 2a using CHP as the oxidant and economically available Ti(O-i-Pr)4/L-DET/H2O as catalysts were developed. The reaction went smoothly under mild conditions with synthetic useful yield and the workup for obtaining the final product is quite convenient.
B(C6F5)3 catalyzed synthesis of dihydropyrano[3,2-b]chromenediones under solvent-free conditions
Creators: name: Yuvaraj P. Sarnikar
name: Mane, Yogesh D.
name: Biradar, Dhanraj O.
name: Bhimrao C. Khade
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: A simple, efficient, solventless, and one step, B(C6F5)3 catalyzed, synthesis of dihydropyrano[3,2-b]chromenediones from dimedone, aldehyde and kojic acid is described. This protocol proceeds smoothly, accommodates aromatic as well as heteroaromatic aldehydes and gives dihydropyrano[3,2-b]chromenediones in excellent yield.
title: Μελέτη κυλινδρικών δοχείων με εφαρμογή σε δεξαμενές μεταφοράς υγροποιημένων αερίων
titleType: AlternativeTitle
title: Study of cylindrical containers with application to transport tanks of liquefied gas
Creators: name: Kalmpenhs, Socrates K.
Publisher: name: National Technological University of Athens
Year: 2013
Subjects: Σύνθετα υλικά
Μεταφορά υγροποιημένων αερίων
Αριθμητική προσομοίωση κυλίνδρου
Aντοχή κυλίνδρου
Παραμορφώσεις
Comsol
Liquefied gas
Transport tanks
Cylindrical containers
Reinforcing fibers

description: 167 σ.
description: Στην παρούσα διπλωματική εργασία γίνεται αριθμητική προσομοίωση της μηχανικής αντοχής κυλίνδρου με παχιά τοιχώματα από σύνθετα υλικά, είτε υπό πίεση είτε καταπονούμενου από θερμικό φορτίο, είτε ως συνδυασμός των δύο ειδών καταπονήσεων, με τη βοήθεια του υπολογιστικού πακέτου Comsol Multiphysics 3.5a. Στόχος είναι η διερεύνηση των πλεονεκτημάτων από την χρήση σύνθετων υλικών στη κατασκευή δεξαμενών μεταφοράς και αποθήκευσης υγροποιημένων αερίων. Στο πρώτο κεφάλαιο γίνεται μια γενική αναφορά στη μεταφορά υγροποιημένου αερίου. Στο δεύτερο κεφάλαιο αναφέρονται οι κατεργασίες συνθέτων υλικών και αναλύεται η μηχανική συμπεριφορά τους και οι μέθοδοι παρασκευής τους. Στο τρίτο κεφάλαιο γίνεται μια περιληπτική αναφορά στη μέθοδο των πεπερασμένων στοιχείων, η οποία χρησιμοποιείται για την αριθμητική επίλυση του προβλήματος. Στο τέταρτο κεφάλαιο αναλύονται τα βήματα που ακολουθήθηκαν για την κατασκευή του αριθμητικού μοντέλου προσομοίωσης στο Comsol. Η επίλυση του προβλήματος, λόγω της αξονικής του συμμετρίας, έγινε στο ¼ του σωλήνα (3D πρόβλημα λόγω ορθοτροπικού υλικού). Επίσης αναφέρονται και αναλύονται οι έξη προσομοιώσεις που διεξήχθησαν. Τέλος στο πέμπτο κεφάλαιο γίνονται οι συγκρίσεις διαφόρων προσομοιώσεων και εξάγονται τα τελικά συμπεράσματα. Τα πιο σημαντικά συμπεράσματα στα οποία καταλήξαμε από τις ανωτέρω προσομοιώσεις ήταν ότι επιτρέπονται μεγαλύτερες παραμορφώσεις στην περίπτωση ορθοτροπικού υλικού σε σχέση με τη χρήση απλά και μόνο ισοτροπικού υλικού και ότι οι τάσεις που αναπτύσσονται λόγω αποθήκευσης σε ατμοσφαιρική πίεση και χαμηλή εσωτερική θερμοκρασία υγροποίησης (περίπτωση προπανίου – βουτανίου) είναι δύο τάξης μεγέθους υψηλότερες από τις τάσεις που αναπτύσσονται λόγω μεταβολής της πίεσης σε θερμοκρασία περιβάλλοντος κατά την μεταφορά υγραερίου. Οπότε είναι λογικό να προτιμάται η αποθήκευση υγροποιημένων αερίων σε πιέσεις μεγαλύτερες της ατμοσφαιρικής και σε θερμοκρασία ίση με τη θερμοκρασία περιβάλλοντος, οπότε διατηρούνται σε υγρή κατάσταση λόγω αυξημένης πίεσης. Όταν αποθηκεύονται σε πίεση ατμοσφαιρική απαιτείται η χρήση πολύ καλών θερμικών μονωτικών υλικών ώστε να αποφευχθεί η θέρμανση του εσωτερικού των δεξαμενών και επομένως η μετατροπή του υγροποιημένου αερίου σε αέριο. Ακόμα και αν κάτι τέτοιο επιτευχθεί, το κόστος της εγκατάστασης γίνεται απαγορευτικό.
Dirac fermion duality and the parity anomaly
Creators: name: Burkov, A. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a derivation of the recently discovered duality between the free massless (2+1)-dimensional Dirac fermion and QED$_3$. Our derivation is based on a regularized lattice model of the Dirac fermion and is similar to the more familiar derivation of the boson-vortex duality. It also highlights the important role played by the parity anomaly, which is somewhat less obvious in other discussions of this duality in the literature.
description: 5 pages, typo corrected
Gravitoelectromagnetism
Creators: name: Mashhoon, Bahram
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitoelectromagnetism is briefly reviewed and some recent developments in this topic are discussed. The stress-energy content of the gravitoelectromagnetic field is described from different standpoints. In particular, the gravitational Poynting flux is analyzed and it is shown that there exists a steady flow of gravitational energy circulating around a rotating mass.
description: LaTeX file, no figures, 12 pages, Plenary talk given at EREs2000 (Valladolid, Spain, 6-9 September 2000); to be published in Proc. Spanish Relativity Meeting, edited by J.-F. Pascual-S\'anchez, L. Flor\'ia, A. San Miguel, and F. Vicente (World Scientific, 2001)
QASHQADARYO VILOYATIDA IQTISODIY SOHADAGI O'ZGARISHLAR
Creators: name: Nomozov, Sohibjon
Publisher: name: Zenodo
Year: 2025

description: XX asrning oxirgi o’n yilligi insoniyat tarixida buyuk o’zgarishlar davri bo’lib kiradi. Jahon hamjamiyati safiga kirayotgan yosh mustaqil davlatlar orasida O’zbekiston ham bor. Mustaqil taraqqiyotining o’tgan yigirma yili mobaynida mamlakatimiz hayotida salmoqli ijobiy o’zgarishlar amalga oshirilganligi bugun barchaga ayon. O’zbekiston Respublikasining birinchi Prezidenti I.Karimov “O’zbekiston iqtisodiyotining so’nggi yillardagi izchil va barqaror rivojlanishi biz tanlagan taraqqiyot modelining hayotiy va samarali ekanligini ko’rsatmoqda. Oxirgi besh yil davomida iqtisodiyotning o’sish sur’atlari o’rtacha 8 foizga oshdi va 2009 yilning birinchi choragida 7,9 foizni tashkil etdi” deb ta’kidlagan edi.