cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the parameters of the spherically symmetric parametrized Rezzolla-Zhidenko spacetime through solar system tests, orbit of S2 star about Sgr A$^\star$, and quasiperiodic oscillations
Creators: name: Shaymatov, Sanjar
name: Ahmedov, Bobomurat
name: De Laurentis, Mariafelicia
name: Jamil, Mubasher
name: Wu, Qiang
name: Wang, Anzhong
name: Azreg-Aïnou, Mustapha
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we find the higher order expansion parameters $α$ and $λ$ of spherically symmetric parametrized Rezzolla--Zhidenko (PRZ) spacetime by using its functions of the radial coordinate. We subject the parameters of this spacetime to classical tests including weak gravitational field effects in Solar System, observations of the S2 star located in the star cluster close to the Sgr A$^{\star}$ and of the frequencies of selected microquasars. Based on this spherically symmetric spacetime we perform the analytic calculations for Solar System effects like perihelion shift, light deflection, and gravitational time delay so as to determine limits on the parameters by using observational data. We restrict our attention to the limits on the two higher order expansion parameters $α$ and $λ$ that survive at the horizon or near the horizon of spherically symmetric metrics. The properties of these two small parameters expansion in PRZ parametrization are discussed. We further apply the Monte Carlo Markov Chain (MCMC) simulations to analyze and obtain the limits on the expansion parameters by using observations of phenomena of the S2 star. Finally, we consider the epicyclic motions and derive analytic expressions of the epicyclic frequencies. Applying these expressions to the quasiperiodic oscillations (QPOs) of selected microquasars allows us to set further limits on the parameters of the PRZ spacetime. Our results demonstrate that the higher order expansion parameters can be given in the range $α\, ,λ=(-0.09\, , 0.09)$ and of order $\sim 10^{-2}$ as a consequence of three various tests and observations.
description: 20 pages, 2 tables, 5 captioned figures; references added, minor changes made. Accepted for publication in ApJ
title: 3d volume sequences in MRI of the cervical spine are prone to miss demyelination
Creators: name: Arlachov, Yuriy
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Prospective
subject: Image registration
subject: Imaging sequences
subject: MR
subject: Neuroradiology spine
subject: Musculoskeletal spine
subject: Musculoskeletal
subject: Not applicable
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: The objective of this study is to highlight the limitation of 3 dimensional (3D) volume magnetic resonance imaging (MRI) sequences in assessing spinal cord...
Radiative decays of the heavy-quark-spin molecular partner of $T_{cc}^+$
Creators: name: Jia, Zhao-Sai
name: Zhang, Zhen-Hua
name: Li, Gang
name: Guo, Feng-Kun
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: With the assumptions that the $T_{cc}^+$ discovered at LHCb is a $D^{*}D$ hadronic molecule, using a nonrelativistic effective field theory we calculate the radiative partial widths of $T_{cc}^* \to D^*Dγ$ with $T_{cc}^*$ being a $D^{*}D^{*}$ shallow bound state and the heavy-quark-spin partner of $T_{cc}^+$. The $I=0$ $D^*D$ rescattering effect with the $T_{cc}$ pole is taken into account. The results show that the isoscalar $D^{\ast} D$ rescattering can increase the tree-level decay width of $T_{cc}^{\ast +}\rightarrow D^{*+}D^0γ$ by about $50\%$, while decrease that of $T_{cc}^{\ast +}\rightarrow D^{*0}D^+γ$ by a similar amount. The two-body partial decay widths of the $T_{cc}^{*+}$ into $T_{cc}^+γ$ and $T_{cc}^+π^0$ are also calculated, and the results are about $6~\rm{keV}$ and $3~\rm{keV}$, respectively. Considering that the $D^*$ needs to be reconstructed from the $Dπ$ or $Dγ$ final state in an experimental measurement, the four-body partial widths of the $T_{cc}^{*+}$ into $DDγγ$ and $DDπγ$ are explicitly calculated, and we find that the interference effect between different intermediate $D^*Dγ$ states is small. The total radiative decay width of the $T_{cc}^*$ is predicted to be about $24~\rm{keV}$. Adding the hadronic decay widths of $T_{cc}^* \to D^*Dπ$, the total width of the $T_{cc}^*$ is finally predicted to be $(65\pm2)$ keV.
description: 27 pages, 13 figures. Published in Phys. Rev. D. arXiv admin note: text overlap with arXiv:2211.02479
The roosting behaviour of little brown bats (myotis lucifugus) and northern long-eared bats (myotis septentrionalis) in the boreal forest of northern Alberta
Creators: name: Olson, Cory R.
Publisher: name: University of Calgary
Year: 2011

description: Bibliography: p. 109-130
description: Includes copy of animal protocol approval. Original copy with original Partial Copright Licence.
Dissociable Neural Substrates for Agentic versus Conceptual Representations of Self
Creators: name: Powell, Lindsey J.
name: Macrae, C. Neil
name: Cloutier, Jasmin
name: Metcalfe, Janet A.
name: Mitchell, Jason P.
Publisher: name: Columbia University
Year: 2010
Subjects: subject: Neurosciences
subject: FOS: Clinical medicine
subject: Cognitive psychology
subject: Psychology
subject: FOS: Psychology

description: Although humans generally experience a coherent sense of selfhood, we can nevertheless articulate different aspects of self. Recent research has demonstrated that one such aspect of self—conceptual knowledge of one's own personality traits—is subserved by ventromedial prefrontal cortex (vMPFC). Here, we examined whether an alternative aspect of “self”—being an agent who acts to achieve one's own goals—relies on cognitive processes that overlap with or diverge from conceptual operationalizations of selfhood. While undergoing fMRI, participants completed tasks of both conceptual self-reference, in which they judged their own or another person's personality traits, and agentic self-reference, in which they freely chose an object or watched passively as one was chosen. The agentic task failed to modulate vMPFC, despite producing the same memory enhancement frequently observed during conceptual self-referential processing (the “self-reference” effect). Instead, agentic self-reference was associated with activation of the intraparietal sulcus (IPS), a region previously implicated in planning and executing actions. Experiment 2 further demonstrated that IPS activity correlated with later memory performance for the agentic, but not conceptual, task. These results support views of the “self” as a collection of distinct mental operations distributed throughout the brain, rather than a unitary cognitive system.
Dissociating Neural Correlates of Action Monitoring and Metacognition of Agency
Creators: name: Miele, David B.
name: Wager, Tor D.
name: Metcalfe, Janet A.
name: Mitchell, Jason P.
Publisher: name: Columbia University
Year: 2011
Subjects: subject: Neurosciences
subject: FOS: Clinical medicine
subject: Cognitive psychology
subject: Psychology
subject: FOS: Psychology

description: Judgments of agency refer to people's self-reflective assessments concerning their own control: their assessments of the extent to which they themselves are responsible for an action. These self-reflective metacognitive judgments can be distinguished from action monitoring, which involves the detection of the divergence (or lack of divergence) between observed states and expected states. Presumably, people form judgments of agency by metacognitively reflecting on the output of their action monitoring and then consciously inferring the extent to which they caused the action in question. Although a number of previous imaging studies have been directed at action monitoring, none have assessed judgments of agency as a potentially separate process. The present fMRI study used an agency paradigm that not only allowed us to examine the brain activity associated with action monitoring but that also enabled us to investigate those regions associated with metacognition of agency. Regarding action monitoring, we found that being “out of control” during the task (i.e., detection of a discrepancy between observed and expected states) was associated with increased brain activity in the right TPJ, whereas being “in control” was associated with increased activity in the pre-SMA, rostral cingulate zone, and dorsal striatum (regions linked to self-initiated action). In contrast, when participants made self-reflective metacognitive judgments about the extent of their own control (i.e., judgments of agency) compared with when they made judgments that were not about control (i.e., judgments of performance), increased activity was observed in the anterior PFC, a region associated with self-reflective processing. These results indicate that action monitoring is dissociable from people's conscious self-attributions of control.
Lensing impact on cosmic relics and tensions
Creators: name: Giarè, William
name: Mena, Olga
name: Di Valentino, Eleonora
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Cosmological bounds on neutrinos and additional hypothetical light thermal relics, such as QCD axions, are currently among the most restrictive ones. These limits mainly rely on Cosmic Microwave Background temperature anisotropies. Nonetheless, one of the largest cosmological signatures of thermal relics is that on gravitational lensing, due to their free streaming behavior before their non-relativistic period. We investigate late time only hot relic mass constraints, primarily based on recently released lensing data from the Atacama Cosmology Telescope, both alone and in combination with lensing data from the Planck Satellite. Additionally, we consider other local probes, such as Baryon Acoustic Oscillations measurements, shear-shear, galaxy-galaxy, and galaxy-shear correlation functions from the Dark Energy Survey, and distance moduli measurements from Type Ia Supernovae. The tightest bounds we find are $\sum m_ν<0.43$ eV and $m_a<1.1$ eV, both at $95\%$ CL. Interestingly, these limits are still much stronger than those found on e.g. laboratory neutrino mass searches, reassessing the robustness of the extraction of thermal relic properties via cosmological observations. In addition, when considering lensing-only data, the significance of the Hubble constant tension is considerably reduced, while the clustering parameter $σ_8$ controversy is completely absent.
description: 10 pages, 3 figures, 7 tables. Edited to Match the PRD published version
Lifshitz theory of van der Waals pressure in dissipative media
Creators: name: Zheng, Yi
name: Narayanaswamy, Arvind
Publisher: name: Columbia University
Year: 2011
Subjects: subject: Mechanical engineering
subject: FOS: Mechanical engineering
subject: Microphysics

description: We derive a first-principles method of determining the van der Waals or Casimir pressure in a dissipative and dispersive planar multilayered system by calculating the Maxwell stress tensor in a fictitious layer of vacuum, that is eventually made to vanish, introduced in the structure. This is illustrated by calculating the van der Waals pressure in a thin film with dissipative properties embedded between two semi-infinite media.
title: Close or Open MRI? – a focused management appointment journey for scanxious and corpulent inpatients from your ward to us.
Creators: name: Exconde, Apollo
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: MRI
subject: Management
subject: Professional issues
subject: Radiographers
subject: MR
subject: Education
subject: Equipment
subject: Health policy and practice
subject: Education and training
subject: Occupational / Environmental hazards
subject: Workforce
subject: Retrospective
subject: Not applicable
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: This is to illustrate the effective transition of inpatients from the ward to the MRI unit, how to categorise and give appropriate service on a personalised approach depending on the individuals physical, mental and clinical condition to reduce...
Higher strangeonium decays into light flavor baryon pairs like $Λ\barΛ$, $Σ\barΣ$, and $Ξ\barΞ$
Creators: name: Bai, Zi-Yue
name: Zhou, Qin-Song
name: Liu, Xiang
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this work, we investigate the decay behaviors of several higher strangeonia into $Λ\barΛ$ through a hadronic loop mechanism, enabling us to predict some physical observables, including the branching ratios. Furthermore, we assess the reliability of our research by successfully reproducing experimental data related to the cross section of $e^+e^-\toΛ\barΛ$ interactions. In this context, we account for the contributions arising from higher strangeonia, specifically $ϕ(4S)$ and $ϕ(3D)$. Additionally, we extend this study to encompass higher strangeonia decays into other light flavor baryon pairs, such as $Σ\barΣ$ and $Ξ\barΞ$. By employing the same mechanism, we aim to gain valuable insights into the decay processes involving these particles. By conducting this investigation, we hope to shed light on the intricate decay mechanisms of higher strangeonia and their interactions with various baryons pairs.
description: 12 pages, 5 tables and 7 figures
Quantum dynamics of OCS molecule doped in superfluid 4He nanodroplet
Creators: name: Jha, Ashok K.
name: Dey, Samrat
name: Jain, Yatendra S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: In this paper, we explain the change of rotational constant (B) and vibrational frequency shift of 4HeN-OCS clusters with N by using important inferences of Macro-Orbital theory of superfluidity and several other factors that can change B and vibrational frequency. Consequently, this helps us in understanding the extra ordinary experimental observations that (i) B decreases monotonically from N = 1 to 9 and rises thereafter to follow broad oscillations with maxima at N = 24, 47 and minima at 36 and 62 and (ii) vibrational frequency shift has blue shift for N ~ 1 - 6, with steady red shift thereafter having a change in slope at N ~ 17.
Excited bound states and their role in dark matter production
Creators: name: Binder, Tobias
name: Garny, Mathias
name: Heisig, Jan
name: Lederer, Stefan
name: Urban, Kai
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We explore the impact of highly excited bound states on the evolution of number densities of new physics particles, specifically dark matter, in the early Universe. Focusing on dipole transitions within perturbative, unbroken gauge theories, we develop an efficient method for including around a million bound state formation and bound-to-bound transition processes. This enables us to examine partial-wave unitarity and accurately describe the freeze-out dynamics down to very low temperatures. In the non-Abelian case, we find that highly excited states can prevent the particles from freezing out, supporting a continuous depletion in the regime consistent with perturbativity and unitarity. We apply our formalism to a simplified dark matter model featuring a colored and electrically charged $t$-channel mediator. Our focus is on the regime of superWIMP production which is commonly characterized by a mediator freeze-out followed by its late decay into dark matter. In contrast, we find that excited states render mediator depletion efficient all the way until its decay, introducing a dependence of the dark matter density on the mediator lifetime as a novel feature. The impact of bound states on the viable dark matter mass can amount to an order of magnitude, relaxing constraints from Lyman-$α$ observations.
description: 21 pages + references, 10 figure; v2: minor presentational improvements, Eq. (A5) corrected, matches journal version
Economic Crises: Evidence and Insights from East Asia
Creators: name: Stiglitz, Joseph E.
name: Furman, Jason
Publisher: name: Columbia University
Year: 1998
Subjects: Economics

description: Presents information on the financial crisis in East Asia. Causes of the crisis; Contrasting perspectives on East Asia's miracle and crisis; Economic impact of the financial and capital account liberalization of the 1980s to East Asia.
An additional study of multi-muon events produced in {\boldmath $p\bar{p}$} collisions at {\boldmath $\sqrt{s}=1.96$} TeV
Creators: name: CDF Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present one additional study of multi-muon events produced at the Fermilab Tevatron collider and recorded by the CDF II detector. We use a data set acquired with a dedicated dimuon trigger and corresponding to an integrated luminosity of 3.9 fb$^{-1}$. We investigate the distribution of the azimuthal angle between the two trigger muons in events containing at least four additional muon candidates to test the compatibility of these events with originating from known QCD processes. We find that this distribution is markedly different from what is expected from such QCD processes and this observation strongly disfavours the possibility that multi-muon events result from an underestimate of the rate of misidentified muons in ordinary QCD events.
description: 12 pages, 4 figures. Adjust author list in this revision
title: Imaging of Acute Pelvic Pain in Wide Variety of Diseases.
Creators: name: Nakai, Asako
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Not applicable
subject: Ischaemia / Infarction
subject: Infection
subject: Acute
subject: Stents
subject: Contrast agent-intravenous
subject: MR
subject: CT
subject: Emergency
subject: Abdomen
subject: Emergency Imaging

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To be familiar with the wide variety of diseases that cause acute pelvic pain and their symptoms, clinical course and treatment. To learn mechanism of abdominal pain. To describe CT and MR imaging findings on acute pelvic...
Additional file 1 of An extensional strain sensing mechanosome drives adhesion-independent platelet activation at supraphysiological hemodynamic gradients
Creators: name: Zainal Abidin, Nurul A.
name: Poon, Eric K. W.
name: Szydzik, Crispin
name: Timofeeva, Mariia
name: Akbaridoust, Farzan
name: Brazilek, Rose J.
name: Tovar Lopez, Francisco J.
name: Ma, Xiao
name: Lav, Chitrarth
name: Marusic, Ivan
name: Thompson, Philip E.
name: Mitchell, Arnan
name: Ooi, Andrew S. H.
name: Hamilton, Justin R.
name: Nesbitt, Warwick S.
Publisher: name: figshare
Year: 2022
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Mental Health
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Fig S1. High-throughput stenosis microfluidics platform & platelet aggregation assay method schema. Fig S2. Ca2+ trajectory sampling and hemodynamics. Fig S3. Effect of stenosis entry geometry on trajectory dependent hemodynamics and platelet function. Fig S4. Hyperbolic microfluidic geometry & platelet [Ca2+]c assay schema. Fig S5. Effect of NF449 and Cbx on platelet aggregation.
A study of piezoresistive sensing based on carbon-nanotube forests
Creators: name: Bsoul, Anas Amjad Mohammad
Publisher: name: University of British Columbia
Year: 2011

description: Carbon nanotubes have attracted considerable attention since their discovery due to their exceptional electrical, mechanical, and optical properties. Piezoresistance of carbon nanotubes is promising, and can be utilized to enable various types of devices. This work investigates devices functionalized with vertically aligned multi-walled carbon-nanotube forests, with a focus on pressure and strain sensors. A fabrication process based on Si-micromachining techniques that overcomes the challenges associated with using carbon-nanotube forests was developed for the devices construction. A pressure sensor is fabricated to have a multi-walled carbon-nanotube forest supported by a deflectable 8-µm-thick Parylene-C membrane suspended by a silicon frame. The responses of the fabricated sensors are experimentally characterized. The sensitivities to positive and negative gauge pressures are found to be comparable in magnitude with the average values of -986 ppm/KPa and +816 ppm/KPa, respectively. The measurement also reveals that the temperature coefficient of the resistance for a forest suspended with a Parylene membrane is -515 ppm/ºC, ~3x smaller than that for a forest fixed onto a silicon substrate. A strain gauge is also fabricated to have a multi-walled carbon-nanotube forest supported by an 8-µm-thick Parylene-C membrane that is supported by two silicon substrates at both ends. The response of the fabricated strain gauge is experimentally characterized. The experiments show that the fabricated device has two sensitivity regions: a sensitive region with a gauge factor of 4.52, about 3.76x more than that for a previously reported carbon-nanotube forest/PDMS based strain gauge, and a less sensitive region with a gauge factor of 0.87. Moreover, the response to gradual strain decreases is very similar to that for gradual strain increases, and the measured gauge factors are 4.4 and 0.77 for both sensitivity regions. The results are analyzed and the source of piezoresistance is explained. Finite element analysis is performed for the strain gauge. The results show that the change in lateral separations between the carbons nanotubes, which are transversal to the direction of the applied force, are not equal in the center region, whereas the change in longitudinal separations between the carbon nanotubes, which are parallel to the applied force, are more equal.
Thermal pure matrix product state in two dimensions: tracking thermal equilibrium from paramagnet down to the Kitaev honeycomb spin liquid state
Creators: name: Gohlke, Matthias
name: Iwaki, Atsushi
name: Hotta, Chisa
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present the first successful application of the matrix product state (MPS) representing a thermal quantum pure state (TPQ) in equilibrium in two spatial dimensions over almost the entire temperature range. We use the Kitaev honeycomb model as a prominent example hosting a quantum spin liquid (QSL) ground state to target the two specific-heat peaks previously solved nearly exactly using the free Majorana fermionic description. Starting from the high-temperature random state, our TPQ-MPS framework on a cylinder precisely reproduces these peaks, showing that the quantum many-body description based on spins can still capture the emergent itinerant Majorana fermions in a ${\mathbb Z}_2$ gauge field. The truncation process efficiently discards the high-energy states, eventually reaching the long-range entangled topological state approaching the exact ground state for a given finite size cluster. An advantage of TPQ-MPS over exact diagonalization or purification-based methods is its lowered numerical cost coming from a reduced effective Hilbert space even at finite temperature.
description: 15 pages, 4 figures, submission to SciPost
title: Туризмдегі экономика
Creators: name: ELS IPR BOOKS
Publisher: name: EDP Hub (Идипи Хаб), Ай Пи Ар Медиа
Year: 2025

description: «Туризмдегі экономика» оқулығында туристік бизнестің негізгі аспектілеріне, оның ішінде әлеуметтік-мәдени сервис пен туризмдегі макроэкономикалық аспектілерге, туризм индустриясының экономикалық-географиялық құрамдас бөліктеріне, т.б. жүйелі шолу жасалған. Оқулықта туризм индустриясының қазіргі тенденциялары көрсетіледі және туристік бизнесті құру және табысты жүргізу әдістерін талқылайды. Оқулық «Туризм» білім бағдарламасы бойынша білім алатын студенттерге және «Туризмдегі экономика» пәнін оқитын студенттерге арналған. Басылым қонақжайлылық индустриясының мамандарына, сондай-ақ туризм және қонақжайлылық индустриясына қызығушылық танытатын барлық адамдарға арналған.
title: Hydrology days award
title: Hydrology days 2008
titleType: AlternativeTitle
title: AGU hydrology days 2008
titleType: AlternativeTitle
title: The estimation of groundwater storage changes at climatic time scales from low streamflow observations - abstract
titleType: AlternativeTitle
Creators: name: Colorado State University, Author
name: Colorado State University, Publisher
Publisher: name: Mountain Scholar
Year: 2008
Subjects: subject: Hydrology -- Congresses
subject: Award winners

description: 2008 annual AGU hydrology days was held at Colorado State University on March 26 - March 28, 2008.
description: The 2008 Hydrology Days Award was presented to Wilfried H. Brutsaert. Included is the abstract of his award lecture "The estimation of groundwater storage changes at climatic time scales from low streamflow observations" given on March 27, 2008.
title: The Role of Transcatheter Arterial Embolization in female pelvic pathology
Creators: name: Pantoja Ortiz, Violeta
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Not applicable
subject: Not applicable
subject: Haemorrhage
subject: Cancer
subject: Arteriovenous malformations
subject: Embolisation
subject: Arterial access
subject: Angioscopy
subject: MR
subject: Fluoroscopy
subject: Catheter arteriography
subject: Interventional vascular
subject: Genital / Reproductive system female
subject: Arteries / Aorta
subject: Interventional Radiology

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: - To illustrate image-guided arterial embolization procedure in female pelvic pathology. - To describe the indications of transcatheter arterial embolization in female pelvic pathology. - To show illustrative cases of those indications. - To...
Laboratory Measurements of Fe XXIV Line Emission: 3→2 Transitions Near
Excitation Threshold
Creators: name: Savin, Daniel Wolf
name: Gu, M. F.
name: Kahn, S. M.
name: Beiersdorfer, P.
name: Brown, G. V.
name: Liedahl, D. A.
name: Reed, K. J.
name: Bhalla, C. P.
name: Grabbe, S. R.
Publisher: name: Columbia University
Year: 1999
Subjects: Astrophysics
Plasma (Ionized gases)
Physics
Microphysics

description: Using the Electron Beam Ion Trap facility at Lawrence Livermore National Laboratory, we have measured relative cross sections for Fe XXIV line emission at electron energies between 0.7 and 3.0 keV. The measurements include line formation by direct electron impact excitation (DE), radiative cascades, resonant excitation (RE), and dielectronic recombination (DR) satellites with captured electrons in n≥5 levels. Good agreement with R-matrix and distorted wave calculations is found. In collisionally ionized plasmas, at temperatures near where the ion abundance peaks (kTe~1.7 keV), the RE contributions are found to be ≲5% of the line emission, while the DR satellites contribute ≲10%. While good agreement with state-of-the-art atomic physics calculations is found, there is less good agreement with existing spectral synthesis codes in common astrophysical use. For the Fe XXIV 3p3/2 → 2s1/2, 3p1/2 → 2s1/2, and 3d5/2 → 2p3/2 transitions, the synthesis code MEKAL underestimates the emissivity in coronal equilibrium by ~20% at temperatures near where the ion abundance peaks. In situations where the ionization balance is not solely determined by the electron temperature, RE and DR satellites may contribute a considerable fraction of the line emission.
Experimental Realization of Optimal Noise Estimation for a General Pauli Channel
Creators: name: Chiuri, A.
name: Rosati, V.
name: Vallone, G.
name: Pádua, S.
name: Imai, H.
name: Giacomini, S.
name: Macchiavello, C.
name: Mataloni, P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present the experimental realization of the optimal estimation protocol for a Pauli noisy channel. The method is based on the generation of 2-qubit Bell states and the introduction of quantum noise in a controlled way on one of the state subsystems. The efficiency of the optimal estimation, achieved by a Bell measurement, is shown to outperform quantum process tomography.
An Add-on Model Predictive Control Strategy for the Energy Management of Hybrid Electric Tractors
Creators: name: Radrizzani, Stefano
name: Panzani, Giulio
name: Trezza, Luca
name: Pizzocaro, Solomon
name: Savaresi, Sergio M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The hybridization process has recently touched also the world of agricultural vehicles. Within this context, we develop an Energy Management Strategy (EMS) aiming at optimizing fuel consumption, while maintaining the battery state of charge. A typical feature of agricultural machines is that their internal combustion engine is speed controlled, tracking the reference requested by the driver. In view of avoiding any modification on this original control loop, an add-on EMS strategy is proposed. In particular, we employ a multi-objective Model Predictive Control (MPC), taking into account the fuel consumption minimization and the speed tracking requirement, including the engine speed controller in the predictive model. The proposed MPC is tested in an experimentally-validated simulation environment, representative of an orchard vineyard tractor.
description: Accepted for publication on IEEE Transactions on Vehicular Technology
Efectos de la epinefrina, norepinefrina y el L-DOPA en el asentamiento y la metamorfosis de larvas de Crassostrea gigas/
Creators: name: Cavazos Lliteras, Heberto.
Publisher: name: Universidad Autónoma de Baja California, Ensenada.
Year: 2023
Subjects: subject: Ostras ||Cultivo||Ostras||Fecundidad||Oceanologia ||Biologia||Tesis
subject: SH371 C38 1987

description: Larvas de Crassostrea gigas fueron tratadas con Epinefrina, y Norepinefrina y L-3, 4 Dehidroxifenilalanina (L-DOPA), compuestos neuroactivos activos estructuralmente, como inductores al asentamiento.
Halictus lucidipennis SMITH 1853
Creators: name: Madl, Michael
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Halictidae
Halictus
Halictus lucidipennis

description: Halictus lucidipennis SMITH, 1853
Halictus (Seladonia) lucidipennis SMITH, 1853: PAULY, PESENKO & LA ROCHE 2002: 201-2 (tax., biol., Djibouti without locality), 202 (figs 1, 2), 203 (fig. 12:, map), 204 (figs 13, 14), 209 (fig. 24: map).
D i s t r i b u t i o n: Djibouti without locality.
Halictus lucidipennis is widely distributed in the Afrotropical, Oriental and Palaearctic regions. It is also recorded from Eritrea, Ethiopia and Yemen. The record from Djibouti is not mentioned in EARDLEY & URBAN (2010: 171).
description: Published as part of Madl, Michael, 2018, A preliminary catalogue of the Hymenoptera (Insecta) of the Republic of Djibouti, pp. 907-967 in Linzer biologische Beiträge 50 (2) on page 935, DOI: 10.5281/zenodo.3776452
Inhibition of chemotaxis by S-3-deazaadenosylhomocysteine in a mouse macrophage cell line
Creators: name: Aksamit, R. R.
name: Falk, Werner
name: Cantoni, G. L.
Publisher: name: Universität Regensburg
Year: 1982
Subjects: subject: 610 Medizin
subject: Animals
subject: Cell Line
subject: Chemotaxis/drug effects
subject: Homocysteine/analogs & derivatives
subject: Isomerism
subject: Kinetics
subject: Macrophages/physiology
subject: Mice
subject: S-Adenosylhomocysteine/pharmacology
subject: Structure-Activity Relationship
subject: Tubercidin/pharmacology

description: Chemotaxis by a macrophage cell line, RAW264, is specifically inhibited by the intracellular accumulation of 3-deazaadenosylhomocysteine (3-deaza-AdoHcy). Intracellular accumulation of 3-deaza-AdoHcy is the result of incubation of the cells with 3-deazaadenosine, a compound that can function both as a substrate and as an inhibitor of adenosylhomocysteine (AdoHcy) hydrolase. Accumulation of AdoHcy per se, brought about in chemotactic cell lines by incubation with either 3-deazaadenosine or with 3-deazaaristeromycin, does not affect chemotaxis. The specific role of 3-deazaadenosine as an inhibitor of macrophage cell line chemotaxis is supported by the following findings. Another macrophage cell line, RAW309CR, is resistant to the inhibition of chemotaxis by 3-deazaadenosine, and the resistance can be ascribed to the failure to accumulate 3-deaza-AdoHcy in this cell line. It is noteworthy that both RAW264 and RAW309CR accumulate similar amounts of AdoHcy after incubation with 3-deazaadenosine. The difference in the accumulation of 3-deaza-AdoHcy in RAW264 and RAW309CR is explained by the finding that sonicates of RAW264 rapidly form 3-deaza-AdoHcy but sonicates of RAW309CR do not. Both hydrolysis of AdoHcy and the inhibition of the hydrolysis of AdoHcy by 3-deazaadenosine are the same in sonicates of the two macrophage cell lines.
Does High School Facility Quality Affect Student Achievement? A 2-Level Hierarchical Linear Model
Creators: name: Bowers, Alex J.
name: Urick, Angela
Publisher: name: Columbia University
Year: 2011
Subjects: Educational evaluation
Education, Secondary

description: The purpose of this study is to isolate the independent effects of high school facility quality on student achievement using a large, nationally representative U.S. database of student achievement and school facility quality. Prior research on linking school facility quality to student achievement has been mixed. Studies that relate overall independently rated structural and engineering aspects of schools have been shown to not be related to achievement. However, more recent research has suggested that facility maintenance and disrepair, rather than structural issues, may be more directly related to student achievement. If there is a relationship, addressing facility disrepair from the school, district, or state level could provide a potential avenue for policymakers for school improvement. We analyzed the public school component and the facilities checklist of the ELS:2002 survey (8,110 students in 520 schools) using a two-level hierarchical linear model to estimate the independent effect of facility disrepair on student growth in mathematics during the final two years of high school controlling for multiple covariates at the student and school level. We found no evidence of a direct effect of facility disrepair on student mathematics achievement and instead propose a mediated effects model.
Identification of RCN1 and RSA3 as ethanol tolerance genes in the Saccharomyces cerevisiae S288C lab strain and M2 wine strain
Creators: name: Anderson, Michael James
Publisher: name: University of British Columbia
Year: 2011

description: Wine fermentation presents a unique environment in which strains of the budding yeast Saccharomyces cerevisiae have evolved with superior tolerance to a multitude of stressors. Ethanol toxicity has one of the greatest impacts in reducing cellular viability and metabolic function and thus poses a threat in causing slow, stuck and incomplete fermentations. In pursuit of optimizing commercial strains of S. cerevisiae, identification of genes involved in ethanol tolerance has been of recent interest. Genomic resources such as the S288C deletion collection and microarray analysis have been widely utilized and have provided a foundation, albeit incomplete, for understanding ethanol toxicity in yeast. As a new approach, the recently developed molecular barcoded yeast open reading frame (MoBY-ORF) library, in which all S. cerevisiae genes along with native promoter and terminator sequences have been cloned into barcoded high copy 2μ plasmid vectors, has been utilized. Both the S288C laboratory strain and the M2 wine strain of S. cerevisiae were transformed with the MoBY ORF library and genes were identified by quantitation of molecular barcodes after 48 hours in 12% ethanol stressed library pools. Five genes were highly ranked in both S288C and M2 screens, two of which, RCN1 and RSA3, improved tolerance to high (16-21% v/v) ethanol toxicity over 1-3 hour incubation periods in both strain backgrounds. RCN1 is a regulator of the stress signalling protein calcineurin whereas RSA3 has a role in ribosome maturation. Additional fitness advantages conferred upon overproduction of RCN1 and RSA3 include increased resistance to cell wall degradation, heat, osmotic and oxidative stress. Neither RCN1 nor RSA3 over-expression in M2 during model fermentations of synthetic wine medium significantly increased the fermentation rate or final ethanol yield. Regulation of calcineurin and ribosomal assembly processes during ethanol stress, however, may still be key targets for improving tolerance to the stressful conditions of wine fermentation.
Chaotic Spiral Galaxies
Creators: name: Contopoulos, George
name: Harsoula, Mirella
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the role of asymptotic curves in supporting the spiral structure of a N-body model simulating a barred spiral galaxy. Chaotic orbits with initial conditions on the unstable asymptotic curves of the main unstable periodic orbits follow the shape of the periodic orbits for an initial interval of time and then they are diffused outwards supporting the spiral structure of the galaxy. Chaotic orbits having small deviations from the unstable periodic orbits, stay close and along the corresponding unstable asymptotic manifolds, supporting the spiral structure for more than 10 rotations of the bar. Chaotic orbits of different Jacobi constants support different parts of the spiral structure. We also study the diffusion rate of chaotic orbits outwards and find that chaotic orbits that support the outer parts of the galaxy are diffused outwards more slowly than the orbits supporting the inner parts of the spiral structure.
description: 14 pages, 11 figures
Moneylenders and bankers: price-increasing subsidies in a monopolistically competitive market
Creators: name: Stiglitz, Joseph E.
name: Hoff, Karla
Publisher: name: Columbia University
Year: 1998
Subjects: Economics

description: Focuses on the development of models of markets with endogenous enforcement costs, which were motivated by rural credit markets' studies. In-depth look at interest rates; Indication that government-subsidized formal credit's infusions have not improved the terms offered by moneylenders; Costs of enforcement in relation to economics; Details on scale economies.
Introduction to Bronstein's "Quantum theory of weak gravitational fields"
Creators: name: Deser, S.
name: Starobinsky, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A scientific introduction and short biography to accompany the translation of Matvei P. Bronstein, "Quantum theory of weak gravitational fields", Phys. Zeitschr. der Sowjetunion 9, 140 157 (1936), to appear as a "Golden Oldie" in JGRG.
description: Introduction to translation of Bronstein's original 1935 paper as a "Golden oldie", JGRG, Jan 2012
title: Imaging of uterine sarcomas
Creators: name: Dkhissi, Younes
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Genitourinary
subject: Genital / Reproductive system female
subject: Oncology
subject: Pelvis
subject: MR
subject: Ultrasound-Colour Doppler
subject: Chemotherapy
subject: Staging
subject: Surgery
subject: Cancer
subject: Neoplasia
subject: Tissue characterisation
subject: Retrospective
subject: Observational
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To evaluate the contribution of MRI in the characterization and diagnosis of the nature of uterine sarcomas and correlate the findings to the...
Small time heat kernel asymptotics at the sub-Riemannian cut locus
Creators: name: Barilari, Davide
name: Boscain, Ugo
name: Neel, Robert W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: For a sub-Riemannian manifold provided with a smooth volume, we relate the small time asymptotics of the heat kernel at a point $y$ of the cut locus from $x$ with roughly "how much" $y$ is conjugate to $x$. This is done under the hypothesis that all minimizers connecting $x$ to $y$ are strongly normal, i.e.\ all pieces of the trajectory are not abnormal. Our result is a refinement of the one of Leandre $4t\log p_t(x,y)\to -d^2(x,y)$ for $t\to 0$, in which only the leading exponential term is detected. Our results are obtained by extending an idea of Molchanov from the Riemannian to the sub-Riemannian case, and some details we get appear to be new even in the Riemannian context. These results permit us to obtain properties of the sub-Riemannian distance starting from those of the heat kernel and vice versa. For the Grushin plane endowed with the Euclidean volume we get the expansion $p_t(x,y)\sim t^{-5/4}\exp(-d^2(x,y)/4t)$ where $y$ is reached from a Riemannian point $x$ by a minimizing geodesic which is conjugate at $y$.
PRUSSIC II -- ALMA imaging of dense-gas tracers in SDP.81: Evidence for low mechanical heating and a sub-solar metallicity in a z=3.04 dusty galaxy
Creators: name: Rybak, M.
name: van Marrewijk, J.
name: Hodge, J. A.
name: Andreani, P.
name: Rivera, G. Calistro
name: Graziani, L.
name: McKean, J. P.
name: Viti, S.
name: van der Werf, P. P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present deep ALMA Band 3 observations of the HCN, HCO+, and HNC (4-3) emission in SDP.81, a well-studied z = 3.042 strongly lensed galaxy. These lines trace the high-density gas, which remains almost entirely unexplored in z$\geq$1 galaxies. Additionally, these dense-gas tracers are potentially powerful diagnostics of the mechanical heating of the interstellar medium. While the HCN(4-3) and HNC(4-3) lines are not detected, the HCO+(4-3) emission is clearly detected and resolved. This is the third detection of this line in a high-redshift star-forming galaxy. We find an unusually high HCO+/HCN intensity ratio of $\geq$2.2. Based on the photodissociation region modelling, the most likely explanation for the elevated HCO+/HCN ratio is that SDP.81 has low mechanical heating - less than 10% of the total energy budget - and a sub-solar metallicity, Z=0.5 Z$_\odot$. While such conditions might not be representative of the general population of high-redshift dusty galaxies, lower-than-solar metallicity might have a significant impact on gas masses inferred from CO observations. In addition, we report the detection of CO(0-1) absorption from the foreground lensing galaxy and CO(1-0) emission from a massive companion to the lensing galaxy, approximately 50 kpc to the southeast.
description: A&A accepted, corrected version
Bias asymmetry in the conductance profile of magnetic ions on surfaces probed by scanning tunneling microscopy
Creators: name: Hurley, Aaron
name: Baadji, Nadjib
name: Sanvito, Stefano
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The conductance profiles of magnetic transition metal atoms, such as Fe, Co and Mn, deposited on surfaces and probed by a scanning tunneling microscope (STM), provide detailed information on the magnetic excitations of such nano-magnets. In general the profiles are symmetric with respect to the applied bias. However a set of recent experiments has shown evidence for inherent asymmetries when either a normal or a spin-polarized STM tip is used. In order to explain such asymmetries here we expand our previously developed perturbative approach to electron-spin scattering to the spin- polarized case and to the inclusion of out of equilibrium spin populations. In the case of a magnetic STM tip we demonstrate that the asymmetries are driven by the non-equilibrium occupation of the various atomic spin-levels, an effect that reminds closely that electron spin-transfer. In contrast when the tip is not spin-polarized such non-equilibrium population cannot be build up. In this circumstance we propose that the asymmetry simply originates from the transition metal ion density of state, which is included here as a non-vanishing real component to the spin-scattering self-energy.
Absolute cross section for Si2+(3s21S→3s3p1P) electron-impact excitation
Creators: name: Savin, Daniel Wolf
name: Reisenfeld, D. B.
name: Gardner, L. D.
name: Janzen, P. H.
name: Kohl, J. L.
Publisher: name: Columbia University
Year: 1999
Subjects: Astrophysics
Plasma (Ionized gases)
Physics

description: We have measured the absolute cross section for electron-impact excitation (EIE) of Si2+(3s21S→3s3p1P) from energies below threshold to 11 eV above. A beams modulation technique with inclined electron and ion beams was used. Radiation at 120.7 nm from the excited ions was detected using an absolutely calibrated optical system. The fractional population of the Si2+(3s3p3Po) metastable state in the incident ion beam was determined to be 0.210±0.018 (1.65σ). The data have been corrected for contributions to the signal from radiative decay following excitation from the metastable state to 3s3p1P and 3p23P, and excitation from the ground state to levels above the 3s3p1P level. The experimental 0.56±0.08-eV energy spread allowed us to resolve complex resonance structure throughout the studied energy range. At the reported ±14% total experimental uncertainty level (1.65σ), the measured structure and absolute scale of the cross section are in good agreement with 12-state close-coupling R-matrix calculations.
Genome Sequence of the Human Abscess Isolate Streptococcus intermedius BA1
Creators: name: Planet, Paul Joseph
name: Rampersaud, Ryan
name: Hymes, Saul R.
name: Whittier, Susan
name: Della-Latta, Phyllis
name: Narechania, Apurva
name: Daugherty, Sean C.
name: Santana-Cruz, Ivette
name: DeSalle, Robert
name: Ravel, Jacques
name: Ratner, Adam Jonathan
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Microbiology
subject: Pathology

description: Streptococcus intermedius is a human pathogen with a propensity for abscess formation. We report a high-quality draft genome sequence of S. intermedius strain BA1, an isolate from a human epidural abscess. This sequence provides insight into the biology of S. intermedius and will aid investigations of pathogenicity.