cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gravitational baryogenesis models comparison in f(R) Gravity
Creators: name: Agrawal, A. S.
name: Tripathy, S. K.
name: Mishra, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We have studied the gravitational baryogenesis in f(R) theory of gravity with an anisotropic Bianchi I space-time. The matter field is considered to be that of perfect fluid. Two models pertaining to specific form of Ricci scalar have been presented. The baryon-to-entropy ratio has been derived with the some specific form of Ricci scalar in the anisotropic background. The gravitational baryogenesis is examined and its behaviors are studied.
description: 8 pages, 4 figures, Accepted version in Chinese Journal of Physics
Fermion and meson mass generation in non-Hermitian Nambu--Jona-Lasinio models
Creators: name: Felski, Alexander
name: Klevansky, S. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the effects of non-Hermiticity on interacting fermionic systems. We do this by including non-Hermitian bilinear terms into the 3+1 dimensional Nambu--Jona-Lasinio (NJL) model. Two possible bilinear modifications give rise to $\mathcal{PT}$ symmetric theories; this happens when the standard NJL model is extended either by a pseudovector background field $ig \barψγ_5 B_μγ^μψ$ or by an antisymmetric-tensor background field $g \barψF_{μν}γ^μγ^νψ$. The three remaining bilinears are {\it anti}-$\mathcal{PT}$-symmetric in nature, $ig \barψB_μγ^μψ, ig\barψγ_5 ψ$ and $ig\barψ{1}ψ$, so that the Hamiltonian then has no overall symmetry. The pseudovector $ig \barψγ_5 B_μγ^μψ$ and the vector $ig \barψB_μγ^μψ$ combinations, are, in addition, chirally symmetric. Thus, within this framework we are able to examine the effects that the various combinations of non-Hermiticity, $\mathcal{PT}$ symmetry, chiral symmetry and the two-body interactions of the NJL model have on the existence and dynamical generation of a real effective fermion mass (a feature which is absent in the corresponding modified massless free Dirac models) as well as on the masses of the composite particles, the pseudoscalar and scalar mesonic modes ($π$ and $σ$ mesons). Our findings demonstrate that $\mathcal{PT}$ symmetry is not necessary for real fermion mass solutions to exist, rather the two-body interactions of the NJL model supersede the non-Hermitian bilinear effects. The effects of chiral symmetry are evident most clearly in the meson modes, the pseudoscalar of which will always be Goldstone in nature if the system is chirally symmetric. Second solutions of the mesonic equations are also discussed.
description: 15 pages, 7 figures
ผลของสารสกัดจากกาบมะพร้าวและกรดฟูมาริกต่อจุลินทรีย์ในโหระพาสด
Creators: name: บุษกร ทองใบ
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: สารสกัดจากกาบมะพร้าว, กรดฟูมาริก, โหระพาสด

description: ฉบับพิเศษ, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Additional file 6 of Single-cell RNA-seq analysis reveals ploidy-dependent and cell-specific transcriptome changes in Arabidopsis female gametophytes
Creators: name: Song, Qingxin
name: Ando, Atsumi
name: Jiang, Ning
name: Ikeda, Yoko
name: Chen, Z. Jeffrey
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Review history.
Contemporary Amharic Corpus: Automatically Morpho-Syntactically Tagged Amharic Corpus
Creators: name: Gezmu, Andargachew Mekonnen
name: Seyoum, Binyam Ephrem
name: Gasser, Michael
name: Nürnberger, Andreas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We introduced the contemporary Amharic corpus, which is automatically tagged for morpho-syntactic information. Texts are collected from 25,199 documents from different domains and about 24 million orthographic words are tokenized. Since it is partly a web corpus, we made some automatic spelling error correction. We have also modified the existing morphological analyzer, HornMorpho, to use it for the automatic tagging.
description: Published in Proceedings of the First Workshop on Linguistic Resources for Natural Language Processing at COLING 2018
Pickup concepts for ultra-low charged short bunches in X-Ray Free-Electron Lasers
Creators: name: Scheible, Bernhard E. J.
name: Mattiello, Stefano
name: Czwalinna, Marie K.
name: Schlarb, Holger
name: Ackermann, Wolfgang
name: De Gersem, Herbert
name: Penirschke, Andreas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The all-optical synchronization systems used in various X-ray free-electron lasers (XFEL) such as the European XFEL observe the transient fields of passing electron bunches coupled into one or more pickups in the Bunch Arrival Time Monitors (BAM). The extracted signal is then amplitude modulated on reference laser pulses in a Mach-Zehnder type electro-optical modulator. With the emerging demand for future experiments with ultra-short FEL shots, fs precision is required for the synchronization systems even with 1 pC bunches. Since the sensitivity of the BAM depends in particular on the slope of the bipolar signal at the zero-crossing and thus, also on the bunch charge, a redesign with the aim of a significant increase by optimized geometry and bandwidth is inevitable. In this contribution the theoretical foundations of the pickup signal are aggregated and treated with a focus on ultra-short bunches as well as a general formulation. A possible new pickup concept is simulated and its performance is compared to the previous concept. A significant improvement of slope and voltage is found. The improvement is mainly achieved by the reduced distance to the beam and a higher bandwidth.
description: 14 pages, 18 figures. This contribution will be submitted to the Physical Review Accelerators and Beams (PRAB) for the Special Edition on the 9th International Beam Instrumentation Conference, IBIC 2020
Dynamic magnetic response of infinite arrays of ferromagnetic particles
Creators: name: Rivkin, Kirill
name: Saslow, W.
name: De Long, L. E.
name: Ketterson, J. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recently developed techniques to find the eigenmodes of a ferromagnetic particle of arbitrary shape, as well as the absorption in the presence of an inhomogeneous radio-frequency field, are extended to treat infinite lattices of such particles. The method is applied to analyze the results of recent FMR experiments, and yields substantially good agreement between theory and experiment.
Advances in Treatment of Wilson Disease
Creators: name: Aggarwal, Annu
name: Bhatt, Mohit
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2018

description: Background: Wilson disease (WD) is an inherited neurometabolic disorder that results in excessive copper deposition in the liver and the brain, affecting children and young adults. Without treatment the disease is invariably fatal. Though treatments for WD have been available since the 1950s, the disease continues to be associated with considerable morbidity and mortality because of missed diagnosis, and delayed or inadequate treatment. In this paper we survey WD-related literature in order to review recent advances in WD treatment. Methods: We performed a literature search using the PubMed database for articles relating to WD and its medical treatment. We reviewed the articles, and cross-references of relevant articles, to summarize the current practices for treatment of WD. Results: The survey shows that if WD is properly treated, in most patients the liver can be stabilized, even severe neurological disability reversed, and patients can resume normal lives. Discussion: Medical treatment for WD includes use of copper chelators (penicillamine, trientine, dimercaprol, dimercaptopropane sulfonate, and ammonium tetrathiomolybdate) and drugs that decrease gastrointestinal copper absorption. Our knowledge of the treatment approaches has benefited from the large systematic clinical studies that have been conducted over the last decade. For each drug used to treat WD, we surveyed its development, indication for use, dosing, efficacy, and adverse effects.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Determination of collinear and TMD photon densities using the Parton Branching method
Creators: name: Jung, H.
name: Monfared, S. Taheri
name: Wening, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the first determination of transverse momentum dependent (TMD) photon densities with the Parton Branching method. The photon distribution is generated perturbatively without intrinsic photon component. The input parameters for quarks and gluons are determined from fits to precision measurements of deep inelastic scattering cross sections at HERA. The TMD densities are used to predict the mass and transverse momentum spectra of very high mass lepton pairs from both Drell-Yan production and Photon-Initiated lepton processes at the LHC.
description: 5 pages, 4 figures
Torrents of Data: The Past, Present and Future of NASA's Scientific Data Management
Creators: name: Bugbee, Kaylin
name: Ramachandran, Rahul
Publisher: name: Zenodo
Year: 2024
Subjects: Open Science
Scientific Data Management
Data Governance

description: NASA has a long history of collecting scientific data to help us better understand our sun, our planet, our solar system and the universe. NASA’s scientific data collection began in the 1960s and continues to this day. As early as the 1980s, the perception from the scientific community was that the information and knowledge extracted from NASA’s scientific data was the ultimate measure of mission success. NASA data was seen as a national resource whose stewardship and use are a national responsibility. However, even in the 1980s, the majority of data problems were not necessarily attributed to technology but to organizational structures and the lack of a coordinated data management strategy (National Academies Report, 1982). In 2019, NASA SMD released the Strategy for Data Management and Computing for Groundbreaking Science 2019-2024 which included a vision of enabling transformational open science through continuous evolution of science data and computing systems for NASA’s Science Mission Directorate. To support that vision, NASA has developed a data and information governance strategy. This presentation highlights the history of scientific data management at NASA and describes a vision for scientific data and information governance for the future.
Additional file 5 of TRIM37 orchestrates renal cell carcinoma progression via histone H2A ubiquitination-dependent manner
Creators: name: Miao, Chenkui
name: Liang, Chao
name: Li, Pu
name: Liu, Bianjiang
name: Qin, Chao
name: Yuan, Han
name: Liu, Yiyang
name: Zhu, Jundong
name: Cui, Yankang
name: Xu, Aiming
name: Wang, Shangqian
name: Su, Shifeng
name: Li, Jie
name: Shao, Pengfei
name: Wang, Zengjun
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 5: Table S1: Clinical baseline of patients in NMU_RCC cohort 1.
Possibilities for charged Higgs bosons at the LHC in a SU(3)$_L\otimesU(1)_N$ Model
Creators: name: Montalvo, J. E. Cieza
name: Cortez, Nelson V.
name: Borges, J. Sá
name: Tonasse, Mauro D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have studied the branching ratios of doubly charged Higgs bosons at the LHC using a version of the SU(3)$_L\otimesU(1)_N$ electroweak model. At the end of this work we have made a very simple plotting comparating the total cross section of this model using Drell-Yan, gluon-gluon fusion and Left-right symmetric model.
description: Talk given at 18th International IUPAP Conference on Few-Body Problems in Physics (FB18), Santos, Sao Paulo, Brazil, 21-26 Aug 2006
Deep Searches for Radio Pulsations and Bursts from Four Southern Anomalous X-ray Pulsars
Creators: name: Crawford, Fronefield
name: Hessels, Jason W. T.
name: Kaspi, Victoria M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have searched for persistent radio pulsations, bright single pulses, and bursts from four Southern anomalous X-ray pulsars (AXPs). Deep observations were conducted at 1.4 GHz in 1999 July and August with the Parkes 64-m telescope. For all of the target AXPs, the upper limits on integrated pulsed emission are ~0.02 mJy, while the limits on the flux of single pulses are ~1 Jy or better. The corresponding radio luminosity limits are significantly below the observed luminosities of the majority of the observed radio pulsars, and they are significantly below the radio luminosity of XTE J1810-197, the only AXP known thus far to emit radio pulsations, at the epoch when radio pulses were first detected from this source. Our null results support the hypothesis that pulsed radio emission from AXPs is only present in conjunction with X-ray outburst activity. However, we cannot rule out the possibility that pulsed radio emission is present, but that it is too weak to be detected in our observations, or that unfavorable viewing geometries prevent this emission from being seen by terrestrial observers. Given the possible association between the radio emission and transient X-ray behavior of XTE J1810-197, continued radio searches of these and other AXPs at different epochs are warranted, particularly after periods of X-ray burst activity.
description: 6 pages, including 1 table. Accepted for publication in ApJ
Interventions for Dysphagia in Parkinson Disease (Gandhi & Steele, 2021)
Creators: name: Gandhi, Pooja
name: M. Steele, Catriona
Publisher: name: ASHA journals
Year: 2021
Subjects: subject: 110904 Neurology and Neuromuscular Diseases
subject: FOS: Clinical medicine
subject: Health Care

description: Purpose: Dysphagia is a common sequela of Parkinson disease (PD) and is associated with malnutrition, aspiration pneumonia, and mortality. This review article synthesized evidence regarding the effectiveness of interventions for dysphagia in PD.Method: Electronic searches were conducted in Ovid MEDLINE, Embase, Cochrane Central Register of Controlled Trials, CINAHL, and speechBITE. Of the 2,015 articles identified, 26 met eligibility criteria: interventional or observational studies with at least five or more participants evaluating dysphagia interventions in adults with PD-related dysphagia, with outcomes measured using videofluoroscopic swallowing study (VFSS), fiberoptic endoscopic evaluation of swallowing (FEES), or electromyography (EMG). Risk of bias (RoB) was evaluated using the Evidence Project tool and predetermined criteria regarding the rigor of swallowing outcome measures.Results: Interventions were classified as follows: pharmacological (n = 11), neurostimulation (n = 8), and behavioral (n = 7). Primary outcome measures varied across studies, including swallowing timing, safety, and efficiency, and were measured using VFSS (n = 17), FEES (n = 6), and EMG (n = 4). Critical appraisal of study findings for RoB, methodological rigor, and transparency showed the majority of studies failed to adequately describe contrast media used, signal acquisition settings, and rater blinding to time point. Low certainty evidence generally suggested improved swallow timing with exercises with biofeedback and deep brain stimulation (DBS), improved safety with DBS and expiratory muscle strength training, and improved efficiency with the Lee Silverman Voice Treatment and levodopa.Conclusions: Studies with lower RoB and greater experimental rigor showed potential benefit in improving swallowing efficiency but not safety. Further research investigating discrete changes in swallowing pathophysiology post-intervention is warranted to guide dysphagia management in PD.
Supplemental Material S1. Summary of study characteristics.
Gandhi, P., & Steele, C. M. (2021). Effectiveness of interventions for dysphagia in Parkinson disease: A systematic review. American Journal of Speech-Language Pathology. Advance online publication. https://doi.org/10.1044/2021_AJSLP-21-00145
Adaptive rapid tracking by a 3 DOF robot manipulator
Creators: name: Qu, Jing
Publisher: name: University of British Columbia
Year: 2008

description: In this thesis, an adaptive rapid tracking control methodology, which allows a robot manipulator to track an arbitrarily pre-specified short yet maybe complex trajectory quickly and precisely, is simulated. The dynamic equations of motion of the robot manipulator, which has a parallelogram mechanism, are established using Euler-Lagrange method. Recursive least-squares identification is carried out to identify the dynamic parameters of the manipulator system. This is followed by computed torque to approximately linearize the non-linear system using the estimated parameters. Because the approximately linearized plant is time-varying and has imprecisely-known parameters, and for the purpose of rapid tracking, adaptive control with again the recursive least-squares identification is applied to identify the parameters of the approximately linearized plant and of the controller, based on which a supplemental tracking control signal is learned and rapid tracking is accomplished by injecting this signal to the input of the approximately linearized plant. The simulation results show that this tracking methodology allows very good tracking performance.
Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
Creators: name: Hinshaw, G.
name: Weiland, J. L.
name: Hill, R. S.
name: Odegard, N.
name: Larson, D.
name: Bennett, C. L.
name: Dunkley, J.
name: Gold, B.
name: Greason, M. R.
name: Jarosik, N.
name: Komatsu, E.
name: Nolta, M. R.
name: Page, L.
name: Spergel, D. N.
name: Wollack, E.
name: Halpern, M.
name: Kogut, A.
name: Limon, M.
name: Meyer, S. S.
name: Tucker, G. S.
name: Wright, E. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new full-sky temperature and polarization maps in five frequency bands from 23 to 94 GHz, based on data from the first five years of the WMAP sky survey. The five-year maps incorporate several improvements in data processing made possible by the additional years of data and by a more complete analysis of the instrument calibration and in-flight beam response. We present several new tests for systematic errors in the polarization data and conclude that Ka band data (33 GHz) is suitable for use in cosmological analysis, after foreground cleaning. This significantly reduces the overall polarization uncertainty. With the 5 year WMAP data, we detect no convincing deviations from the minimal 6-parameter LCDM model: a flat universe dominated by a cosmological constant, with adiabatic and nearly scale-invariant Gaussian fluctuations. Using WMAP data combined with measurements of Type Ia supernovae and Baryon Acoustic Oscillations, we find (68% CL uncertainties): Omega_bh^2 = 0.02267 \pm 0.00059, Omega_ch^2 = 0.1131 \pm 0.0034, Omega_Lambda = 0.726 \pm 0.015, n_s = 0.960 \pm 0.013, tau = 0.084 \pm 0.016, and Delta_R^2 = (2.445 \pm 0.096) x 10^-9. From these we derive: sigma_8 = 0.812 \pm 0.026, H_0 = 70.5 \pm 1.3 km/s/Mpc, z_{reion} = 10.9 \pm 1.4, and t_0 = 13.72 \pm 0.12 Gyr. The new limit on the tensor-to-scalar ratio is r < 0.22 (95% CL). We obtain tight, simultaneous limits on the (constant) dark energy equation of state and spatial curvature: -0.14 < 1+w < 0.12 and -0.0179 < Omega_k < 0.0081 (both 95% CL). The number of relativistic degrees of freedom (e.g. neutrinos) is found to be N_{eff} = 4.4 \pm 1.5, consistent with the standard value of 3.04. Models with N_{eff} = 0 are disfavored at >99.5% confidence.
description: 46 pages, 13 figures, and 7 tables. Version accepted for publication, ApJS, Feb-2009. Includes 5-year dipole results and additional references. Also available at http://lambda.gsfc.nasa.gov/product/map/dr3/map_bibliography.cfm
Large heat flux in electrocaloric multilayer capacitors
Creators: name: Faye, Romain
name: Strozyk, Hervé
name: Dkhil, Brahim
name: Defay, Emmanuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Multi Layer Capacitors MLCs are considered as the most promising refrigerant elements to design and develop electrocaloric cooling devices. Recently, the heat transfer of these MLCs has been considered. However, the heat exchange with the surrounding environment has been poorly, if not, addressed. In this work, we measure by infrared thermography the temperature change versus time in four different heat exchange configurations. Depending on the configurations, Newtonian and non-Newtonian regimes with their corresponding Biot number are determined allowing to provide useful thermal characteristics. Indeed, in case of large area thermal pad contacts, heat transfer coefficients up to 3400 W m-2 K-1 are obtained showing that the standard MLCs already reach the needs for designing efficient prototypes. We also determine the ideal Brayton cooling power in case of thick wires contact which varies between 3.4 mW and 9.8 mW for operating frequencies varying from 0.25 Hz to 1 Hz. While only heat conduction is considered here, our work provides some design rules for improving heat exchanges in future devices.
Ground state properties of the one dimensional Coulomb gas
Creators: name: Casula, Michele
name: Sorella, Sandro
name: Senatore, Gaetano
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the ground state properties of a quasi one dimensional electron gas, interacting via an effective potential with a harmonic transversal confinement and long range Coulomb tail. The exact correlation energy has been calculated for a wide range of electron densities by using the lattice regularized diffusion Monte Carlo method, which is a recent development of the standard projection Monte Carlo technique. In this case it is particularly useful as it allows to sample the exact ground state of the system, even in the low density regime when the exchange between electrons is extremely small. For different values of the width parameter b (0.1 a*_0 <= b <= 4 a*_0), we give a simple parametrization of the correlation energy, which provides an accurate local density energy functional for quasi one dimensional systems. Moreover we show that static correlations are in qualitative agreement with those obtained for the Luttinger liquid model with long range interactions.
description: 15 pages, 13 figures, to appear in Phys. Rev. B
Electronic subbands in the a-LaAlO$_3$/KTaO$_3$ interface revealed by quantum oscillations in high magnetic fields
Creators: name: Rubi, Km
name: Zeng, Shengwei
name: Bangma, Femke
name: Goiran, Michel
name: Ariando, A.
name: Escoffier, Walter
name: Zeitler, Uli
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Investigating Shubnikov-de Haas (SdH) oscillations in high magnetic fields, we experimentally infer the electronic band structure of the quasi-two-dimensional electron gas (2DEG) at the ionic-liquid gated amorphous (a)-LaAlO$_3$/KTaO$_3$ interface. The angular dependence of SdH oscillations indicates a 2D confinement of a majority of electrons at the interface. However, additional SdH oscillations with an angle-independent frequency observed at high tilt angles indicate the coexistence of 3D charge carriers extending deep into the KTaO$_3$. The SdH oscillations measured in magnetic fields perpendicular to the interface show four frequencies corresponding to four 2D subbands with different effective masses (0.20 $m_e$ - 0.55 $m_e$). The single-frequency oscillations originating from 3D electrons yields a larger effective mass of $\sim$ 0.70 $m_e$. Overall, the inferred subbands are in good agreement with the theoretical-calculations and angle-resolved photoemission spectroscopy studies on 2DEG at KTaO$_3$ surface.
The detection of the (J,K)=(18,18) line of NH3
Creators: name: Wilson, T. L.
name: Henkel, C.
name: Huettemeister, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The first astronomical detection of the metastable ($J,K$) = (18,18) line of NH3 is reported. With 3130 K above the ground state, this is the NH3 line with by far the highest energy detected in interstellar space. It is observed in absorption toward the galactic center star forming region Sgr B2. There is a clear detection toward Sgr B2(M) and a likely one toward SgrB2(N). An upper limit for emission is determined for Orion-KL. If we combine the (18,18) line results from Sgr B2(M) with the previously measured (12,12) absorption line, we find a rotation temperature of >1300 K for the absorbing cloud. This is at least a factor of two higher than previously derived values from less highly excited ammonia lines, giving a lower limit to the kinetic temperature. There is a hot low density gas component in the envelope of SgrB2. It is possible that the (18,18) line arises in this region. The radial velocity of the low density, hot envelope is the same as that of the dense hot cores, so the (18,18) line could also arise in the dense hot cores where non-metastable (J>K) absorption lines from energy levels of up to 1350 K above the ground state have been observed. A discussion of scenarios is presented.
description: 6 pages, 2 figures, 2 Tables, accepted for publication in A&A Main Journal
Simulation study of the interaction between large-amplitude HF radio waves and the ionosphere
Creators: name: Eliasson, Bengt
name: Thidé, Bo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The time evolution of a large-amplitude electromagnetic (EM) wave injected vertically into the overhead ionosphere is studied numerically. The EM wave has a carrier frequency of 5 MHz and is modulated as a Gaussian pulse with a width of approximately 0.1 milliseconds and a vacuum amplitude of 1.5 V/m at 50 km. This is a fair representation of a modulated radio wave transmitted from a typical high-power HF broadcast station on the ground. The pulse is propagated through the neutral atmosphere to the critical points of the ionosphere, where the L-O and R-X modes are reflected, and back to the neutral atmosphere. We observe mode conversion of the L-O mode to electrostatic waves, as well as harmonic generation at the turning points of both the R-X and L-O modes, where their amplitudes rise to several times the original ones. The study has relevance for ionospheric interaction experiments in combination with ground-based and satellite or rocket observations.
description: 6 pages, 7 figures
Non-anticommutative Supersymmetric Field Theory and Quantum Shift
Creators: name: Arai, Masato
name: Chaichian, Masud
name: Nishijima, Kazuhiko
name: Tureanu, Anca
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Non-anticommutative Grassmann coordinates in four-dimensional twist-deformed N=1 Euclidean superspace are decomposed into geometrical ones and quantum shift operators. This decomposition leads to the mapping from the commutative to the non-anticommutative supersymmetric field theory. We apply this mapping to the Wess-Zumino model in commutative field theory and derive the corresponding non-anticommutative Lagrangian. Based on the theory of twist deformations of Hopf algebras, we comment the preservation of the (initial) N=1 super-Poincaré {\it algebra} and on the consequent super-Poincaré invariant interpretation of the discussed model, but also provide a measure for the violation of the super-Poincaré symmetry.
description: 17 pages, references added, correction made, minor changes made and discussion added in section 5
A wide-field kinematic survey for tidal tails around five globular clusters
Creators: name: Kiss, L. L.
name: Szekely, P.
name: Bedding, T. R.
name: Bakos, G. A.
name: Lewis, G. F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using the AAOmega instrument of the Anglo-Australian Telescope, we have obtained medium-resolution near-infrared spectra of 10,500 stars in two-degree fields centered on the galactic globular clusters 47 Tuc, NGC 288, M12, M30 and M55. Radial velocities and equivalent widths of the infrared Ca II triplet lines have been determined to constrain cluster membership, which in turn has been used to study the angular extent of the clusters. From the analysis of 140-1000 member stars in each cluster, we do not find extended structures that go beyond the tidal radii. For three cluster we estimate a 1% upper limit of extra-tidal red giant branch stars. We detect systemic rotation in 47 Tuc and M55.
description: 4 pages, 3 figures, accepted for publication in ApJ Letters
การพัฒนาน้ำยาทดสอบการอักเสบของเต้านมโค
Creators: name: สุขกมล เกตุพลทอง
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: เต้านมอักเสบ, น้ำนม, การทดสอบ

description: ฉบับพิเศษ, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
อุปกรณ์สำหรับช่วยถ่ายภาพเสมือนจริง
Creators: name: อนิรุทธ์ โชติถนอม
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: ภาพเสมือนจริง, ภาพถ่ายรอบทิศทาง, พาโนรามา

description: ฉบับพิเศษ, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
การเตรียมอนุภาคไมโครบรรจุยาของพอลิดี,แอล-แล็กไทด์ผสมกรดสเตียริกและพฤติกรรมการปลดปล่อยยา
Creators: name: บรรพรต แขวงภูเขียว
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: พอลิเมอร์แตกสลายทางชีวภาพได้, พอลิเมอร์ผสม, อนุภาคไมโคร, ระบบนำส่งยา

description: ฉบับพิเศษ, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Probability distribution of bubble lengths in DNA
Creators: name: Ares, S.
name: Kalosakas, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Biomolecules (q-bio.BM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The distribution of bubble lengths in double-stranded DNA is presented for segments of varying guanine-cytosine (GC) content, obtained with Monte Carlo simulations using the Peyrard-Bishop-Dauxois model at 310 K. An analytical description of the obtained distribution in the whole regime investigated, i.e., up to bubble widths of the order of tens of nanometers, is available. We find that the decay lengths and characteristic exponents of this distribution show two distinct regimes as a function of GC content. The observed distribution is attributed to the anharmonic interactions within base pairs. The results are discussed in the framework of the Poland-Scheraga and the Peyrard-Bishop (with linear instead of nonlinear stacking interaction) models.
description: 5 pages, 4 figures, accepted version. The distribution obtained from the Peyrard-Bishop-Dauxois model is now fitted and discussed in the framework of the Poland-Scheraga model
Mitochondrial inorganic polyphosphate in the physiology and pathology of the organelle
Creators: name: Hambardikar, Vedangi Devendra
Publisher: name: No Publisher Supplied
Year: 2024

description: Inorganic polyphosphate (polyP) is an evolutionarily conserved, multifunctional polyanion composed by multiple orthophosphates bound together by higher energy phosphoanhydride bonds. In mammalian cells polyP has shown a high localization to the mitochondria, and the mitochondrial ATP synthase has suggested to be involved in its metabolism. Therefore, it is no surprising that polyP has been described to be involved in the regulation of key mitochondrial processes like bioenergetics, cellular oxidative status, and the formation and opening of the mitochondrial permeability transition pore. Though, the extent and mechanisms of the involvement of polyP in these processes is not fully understood. Interestingly, the dysregulation of these processes is implicated in the mitochondrial dysfunction that has been broadly described in the pathogenesis of multiple neurodegenerative diseases. Here, we have demonstrated the role of mitochondrial polyP in the regulation of bioenergetics and redox balance in mammalian cells. We have also demonstrated a protective role for the polymer against the mitochondrial dysfunction induced by a pharmacological model of Huntington’s disease (HD).Our results indicate that depletion of polyP dysregulates cellular bioenergetics, characterized by reduction in mitochondrial OXPHOS, the degree of which is dependent on the cellular location and chain length of polyP. Depletion of mitochondrial polyP also upregulates the pentose phosphate pathway. A downstream consequence of this metabolic shift is elevated reactive oxygen species generation, characterized by elevated mitochondrial superoxide and intracellular hydrogen peroxide levels. This finding is accompanied by an increased presence of proteins involved in cellular antioxidant defense. Our results also show that depletion of mitochondria specific polyP significantly distorts the mitochondrial architecture. Furthermore, in a model of HD-induced mitochondrial dysfunction, we demonstrate that polyP levels decrease and mitochondria with lower polyP levels show an increased susceptibility to mitochondrial swelling, which could lead to mitochondrial permeability pore-induced cell death. The findings of this study outline the extent of the bioenergetic, and redox imbalance induced by depletion of mitochondrial polyP, highlighting its crucial role in maintaining the organelles physiology. We also elucidate a cause-and-effect relation between mitochondrial polyP levels and mitochondrial dysfunction, along with its involvement in preserving the mitochondrial membrane integrity, thereby underscoring its protective function against mitochondrial dysfunction in a pharmacologically-induced model of HD.
A parallel algorithm for ASN.1 encoding/decoding
Creators: name: Joseph, Carlton Charles Agnel
Publisher: name: University of British Columbia
Year: 2009

description: Computers differ in many ways: the characters may be coded in ASCII, EBCDIC or UNICODE; integers can vary in size; processors can operate in Big-Endian or Little-Endian format; and programming languages can use different memory representations for data. The International Standards Organization (ISO) provides an Open System Interconnection (OSI) seven-layer reference model[20] to facilitate heterogeneous inter-computer communication. Multimedia technology places new demands on inter-computer communication speeds because of the higher bandwidth requirements of voice and image data. Various implementations of high speed networks meet this demand at the lower layers. The presentation layer of the ISO reference model is the dominant component of the total protocol processing time[5].Hence, the presentation layer represents a bottleneck in communication systems that use high speeds networks. The presentation layer is traditionally implemented in software but now a combined parallel hardware/software approach is taken. Prior to this thesis, VASN.1[3][24][25] was the only parallel hardware/software combination that achieved high throughput in the presentation layer. The parallel algorithm ofVASN.1 limits the scalablity of hardware and hence the achievable parallelism. VASN.1users are expected to use the parallel data structure¹ that it uses. This limitation reduces the flexibility for VASN.1 users and incurs an additional overhead for handling the data structure. The parallel system presented in this thesis avoids the serious problems found in VASN.1.A new parallel algorithm has been developed which provides users with flexible serial datastructures². The encoding algorithm converts flexible serial data structures into parallel information which allow simultaneous processing. The conversion from a serial to a parallel information has not been previously explored in the literature. The decoding algorithm also provides maximum parallelism while providing a flexible serial data structure for applications to use. The algorithm has been designed in such a way that any changes in the ASN.1 specification can be easily incorporated into the system. The final advantage is that the hardware scales gracefully and allows for more parallelism than VASN.1. The initial simulations are promising and show that the throughput achievable by the parallel algorithm is five times greater than that achievable by a serial implementation. ¹A parallel data structure is a data structure that contains extra information required for a parallel algorithm. ²A serial data structure is a data structure that holds no extra information required for a parallel algorithm.
Development of a structural optimisation methodology for use in the design of a composite semi-trailer chassis
Creators: name: Galos, JL
name: Sutcliffe, Michael
Publisher: name: Apollo - University of Cambridge Repository
Year: 2017

description: This paper investigates options for lightweighting a 13.5 m long flat-bed road trailer chassis through the application of composites and structural optimisation. Trailer load cases are first understood through finite element modelling in Abaqus. A parametric model of a typical 13.5 m trailer built from steel I-beam was developed, using Python scripting and the finite element package Abaqus. The model has been used to show that the conventional steel I-beams could be reduced in weight by 28% (140 kg). The model has been expanded to analyse composite trailer structures. It showed that approximately 1, 300 kg of weight could be saved by shape and material optimisation in a composite trailer, while mechanical performance is maintained to an acceptable level and increases in raw material costs are minimised.
Advanced DFT-NEGF transport techniques for novel 2D-material and device exploration including HfS2/WSe2 van-der-Waals Heterojunction TFET and WTe2/WS2 metal/semiconductor contact
Creators: name: Afzalian, Aryan
name: Akhoundi, Elaheh
name: Gaddemane, Gautam
name: Duflou, Rutger
name: Houssa, Michel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present, here, advanced DFT-NEGF techniques that we have implemented in our ATOmistic MOdelling Solver, ATOMOS, to explore transport in novel materials and devices and in particular in van-der-Waals heterojunction transistors. We describe our methodologies using plane-wave DFT, followed by a Wannierization step, and linear combination of atomic orbital DFT, that leads to an orthogonal and non-orthogonal NEGF model, respectively. We then describe in detail our non-orthogonal NEGF implementation including the Sancho-Rubio and electron-phonon scattering within a non-orthogonal framework. We also present our methodology to extract electron-phonon coupling from first principle and include them in our transport simulations. Finally, we apply our methods towards the exploration of novel 2D materials and devices. This includes 2D material selection and the Dynamically-Doped FET for ultimately scaled MOSFETS, the exploration of vdW TFETs, in particular the HfS2/WSe2 TFET that could achieve high on-current levels, and the study of Schottky-barrier height and transport through a metal-semiconducting WTe2/WS2 VDW junction transistor.
Enterprise domain ontology learning from web-based corpus
Creators: name: Vasilateanu, Andrei
name: Goga, Nicolae
name: Tanase, Elena-Alice
name: Marin, Iuliana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Enterprise knowledge is a key asset in the competing and fast-changing corporate landscape. The ability to learn, store and distribute implicit and explicit knowledge can be the difference between success and failure. While enterprise knowledge management is a well-defined research domain, current implementations lack orientation towards small and medium enterprise. We propose a semantic search engine for relevant documents in an enterprise, based on automatic generated domain ontologies. In this paper we focus on the component for ontology learning and population.
Open Data, Open Access and the ORION Project
Creators: name: Patarcic, Inga
Publisher: name: Zenodo
Year: 2021
Subjects: Open Data
FAIR Data
Open Access
Open Science
ORION Project

description: Presentation on Open Data, Open Access and Open Science and the ORION Project. Open Data
 Definitions and Examples
 FAIR vs Open Data
 Open Access Open Science
Pions and Contacts at N4LO: Some details on the chiral nuclear force
Creators: name: Batista, E. F.
name: Szpigel., S.
name: Timoteo, V. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work we have performed a detailed study of chiral nuclear forces at N4LO approximation applied to selected channels of the neutron-proton ($n p$) scattering. The idea is to analyse the different contributions to the nucleon-nucleon ($NN$) potential by separating the part coming from the exchange of pions and the one coming from the contact interactions. We consider two state-of-the-art chiral interactions at N4LO which are constructed using different regularization procedures: the non-local Idaho-Salamanca force and the semi-local interaction from the Bochum group. In order to compare the two types of regularization we consider both interactions with a 500 MeV cutoff and to analyse the cutoff dependence we select the Bochum potential with three different cutoff values: 500, 450 and 400 MeV. Our results show that the balance between pion exchanges and contact interactions depends strongly on the regularization procedure. The non-local angle-independent regularization of both components of the interaction implemented in the Idaho-Salamanca potential make the contact terms to be present at large distances while the local regularization of the pion exchanges in the Bochum potential restricts the contact interactions to small distances. Also, the value of the cutoff affects the strength of the potential but the interplay between pion exchanges and contact terms remains qualitatively the same.
description: 17 pages, 14 figures
Additional file 6 of TRIM37 orchestrates renal cell carcinoma progression via histone H2A ubiquitination-dependent manner
Creators: name: Miao, Chenkui
name: Liang, Chao
name: Li, Pu
name: Liu, Bianjiang
name: Qin, Chao
name: Yuan, Han
name: Liu, Yiyang
name: Zhu, Jundong
name: Cui, Yankang
name: Xu, Aiming
name: Wang, Shangqian
name: Su, Shifeng
name: Li, Jie
name: Shao, Pengfei
name: Wang, Zengjun
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 6: Table S2 Clinical characteristics of RCC patients in TMAs.
Spin extraction theory and its relevance to spintronics
Creators: name: Dery, H.
name: Sham, L. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Extraction of electrons from a semiconductor to a ferromagnet as well as the case of injection in the reverse direction may be formulated as a scattering theory. However, the presence of bound states at the interface arising out of doping on the semiconductor side must be taken into account in the scattering theory. Inclusion of the interface states yields an explanation of a recent result of spin imaging measurement which contradicts the current understanding of spin extraction. The importance of an extraction theory to spintronics is illustrated by an application to a spin switch.
description: 4 two column pages, 3 figures, major revisions to improve the presentation. in addition, the new version includes an electrically controlled spin switch
Linbo₃ Y-branch optical modul
Creators: name: Lai, Winnie Chelsea
Publisher: name: University of British Columbia
Year: 2010

description: Y-branch optical modulators are potentially very useful in optical communications because of their non-interferometric nature, making them easier to fabricate and to control than other types of electro-optic switches. They can be used as digital optical switches, time division multiplexers, or in conjunction with a resonator as its electrode to form a high speed optical commutator switch. The main problem with Y-branch modulators to date is that they all have very small branch angles, e.g., less than 0.2°, and hence long electrodes, thereby increasing the device capacitance and reducing the switching speed. By studying a Y-branch optical modulator numerically and experimentally, our objective is to design a Y-branch modulator which has a short electrode and still offers high on/off ratios and high percentage guided power. By using the effective index method along with the 2-D split-step finite difference beam propagation method, a z-cut titanium indiffused lithium niobate Y-branch modulator is simulated for a free space wavelength of 632.8 nm. The parameters varied in the simulations are: maximum refractive index change at the surface of the waveguide, electrode length, branch angle, and applied modulating voltage. Based on the simulation results, a maximum refractive index change of 0.0042 and an electrode length of two-horn-length are used to provide good on/off ratios and percentage guided power while keeping the electrode short. Since the on/off ratios increase with branch angle while the percentage guided power decreases with branch angle, a range of angles between 1.0° and 1.5° are found to provide the preferred operating characteristics. Y-branch modulators with branch angles ranging from 0.5° to 3.0°, and with electrodes of two-horn-length as well as three-horn-length, are fabricated. The fabrication parameters are as specified in the simulations, e.g. waveguides are formed by diffusing 4 µm wide titanium strips at 1050 °C for 6 hours. Previous fabrication problems such as dust accumulation and surface guiding are alleviated. The devices are tested by launching polarized light from a helium neon laser into a polarization-maintaining fibre and then endfire coupling the light into the fundamental TM-like mode of the waveguides. The on/off ratios and percentage guided powers are measured for both devices with two-horn-length and three-horn-length electrodes. These measured results generally compare well with the theoretical values and the behaviours of all the Y-branch are as predicted. Using the 1.5° Y-branch with the two-horn-length electrode (300 µm) as an example, the experimental on/off ratio is 40:1 with a 66% guided power at 75 V while the theoretical values are 44:1 with 62% guided power. We have demonstrated that a Y-branch electro-optic modulator with high on/off ratios and percentage guided power can be realized with short electrodes.