cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Probing the Magnetic Field with Molecular Ion Spectra
Creators: name: Houde, Martin
name: Bastien, Pierre
name: Peng, Ruisheng
name: Phillips, Thomas G.
name: Yoshida, Hiroshige
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations of the effect of the magnetic field on its environment are usually achieved with techniques which rely on the interaction with the spin of the particles under study. Because of the relative weakness of this effect, extraction of the field characteristics proves to be a most challenging task. We take a totally different approach to the problem and show that the manifestation of the magnetic field can be directly observed by means of a comparison of the spectra of molecular ions with those of neutral molecules. This takes advantage of the strong cyclotron interaction between the ions and the field, but requires the presence of flows or turbulent motion in the gas. We compare our theory to data obtained on the OMC-1, OMC-2, OMC-3 and DR21(OH) molecular clouds.
description: 16 pages, 3 figures, 2 tables
Comparative Autoignition Trends in the Butanol Isomers at Elevated Pressure
Creators: name: Weber, Bryan W.
name: Sung, Chih-Jen
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Autoignition experiments of stoichiometric mixtures of s-, t-, and i-butanol in air have been performed using a heated rapid compression machine (RCM). At compressed pressures of 15 and 30 bar and for compressed temperatures in the range of 715-910 K, no evidence of a negative temperature coefficient region in terms of ignition delay response is found. The present experimental results are also compared with previously reported RCM data of n-butanol in air. The order of reactivity of the butanols is n-butanol>s-butanol$\approx$i-butanol>t-butanol at the lower pressure, but changes to n-butanol>t-butanol>s-butanol>i-butanol at higher pressure. In addition, t-butanol shows pre-ignition heat release behavior, which is especially evident at higher pressures. To help identify the controlling chemistry leading to this pre-ignition heat release, off-stoichiometric experiments are further performed at 30 bar compressed pressure, for t-butanol at $ϕ$ = 0.5 and $ϕ$ = 2.0 in air. For these experiments, higher fuel loading (i.e. $ϕ$ = 2.0) causes greater pre-ignition heat release (as indicated by greater pressure rise) than the stoichiometric or $ϕ$ = 0.5 cases. Comparison of the experimental ignition delays with the simulated results using two literature kinetic mechanisms shows generally good agreement, and one mechanism is further used to explore and compare the fuel decomposition pathways of the butanol isomers. Using this mechanism, the importance of peroxy chemistry in the autoignition of the butanol isomers is highlighted and discussed.
description: 49 pages, 21 figures, 10 tables
Additional file 2 of Delta opioid peptide [d-Ala2, d-Leu5] enkephalin confers neuroprotection by activating delta opioid receptor-AMPK-autophagy axis against global ischemia
Creators: name: Lai, Zelin
name: Gu, Lingling
name: Yu, Lu
name: Chen, Huifen
name: Yu, Zhenhua
name: Zhang, Cheng
name: Xu, Xiaoqing
name: Zhang, Mutian
name: Zhang, Min
name: Ma, Mingliang
name: Zhao, Zheng
name: Zhang, Jun
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified

description: Additional file 2: Fig. S2. The effects of autophagy on neuronal survival in the hippocampal DG region on day 3 postischemia. (a) Immunofluorescence images of NeuN-positive neurons. There was no significant difference in neuronal morphology between the experimental groups. Scale bar = 100 μm. (b) Quantitative analysis of neuron counts (N = 3 per group). DAD: DADLE; Nal: Naltrindole.
Assisting the integration of social media in problem-based learning sessions in the Faculty of Medicine at King Abdulaziz University
Creators: name: Zuhier A. Awan
name: Almuatazbellah A. Awan
name: Alshawwa, Lana
name: Tekian, Ara
name: Park, Yoon Soo
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Purpose: Issues related to traditional Problem-Based Learning (PBL) at King Abdulaziz University Faculty of Medicine (KAU-FOM), including lack of student interaction between sessions and outdated instructional materials have led to the examining the use of social media. This study examines factors affecting the implementation of social media into PBL sessions Methods: Mentored social media activities were incorporated between PBL sessions to third year medical students. Ground rules were set, and students were kept on track with learning objectives and authentic references. An online survey consisting of 18 questions were administered to measure the impact of the social media model embedded between PBL sessions. Results: Feedback showed major improvements in students’ learning process as well as identifying areas for improvement. The highest ratings were in participation and communication, knowledge and information gathering, and cooperation and team-building. Conclusions: This paper indicates that incorporating social media could facilitate learning between PBL sessions. Furthermore, guidelines are proposed to help educators implement a social media model into their PBL sessions.
West Midlands Archaeological News Sheet no 21
Creators: name: Anon
Publisher: name: Archaeology Data Service
Year: 2024

description: West Midlands Archaeology, 21
description: West Midlands Archaeological News Sheet no 21. 111 pages leading with Chairman's Letter. Reports and Notes - some extensive - from the regional SMRs, local groups and individuals, covering field survey, recording, geophysics, excavation and aerial reconnaissance, ordered under General, Field Survey and then by historic period. Publications of West Midlands interest selected from recent local and national books and journals . Directory of West Midland individuals, archaeological groups and institutions.
Rotation of a synchronous viscoelastic shell
Creators: name: Noyelles, Benoît
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Several natural satellites of the giant planets have shown evidence of a global internal ocean, coated by a thin, icy crust. This crust is probably viscoelastic, which would alter its rotational response. This response would translate into several rotational quantities, i.e. the obliquity, and the librations at different frequencies, for which the crustal elasticity reacts differently. This study aims at modelling the global response of the viscoelastic crust. For that, I derive the time-dependency of the tensor of inertia, which I combine with the time evolution of the rotational quantities, thanks to an iterative algorithm. This algorithm combines numerical simulations of the rotation with a digital filtering of the resulting tensor of inertia. The algorithm works very well in the elastic case, provided the problem is not resonant. However, considering tidal dissipation adds different phase lags to the oscillating contributions, which challenge the convergence of the algorithm.
description: Accepted for publication in The Monthly Notices of the Royal Astronomical Society
West Midlands Archaeological News Sheet no 22
Creators: name: Webster, Graham
Publisher: name: Archaeology Data Service
Year: 2024

description: West Midlands Archaeology, 22
description: West Midlands Archaeological News Sheet no 22. 104 pages leading with Contents and Chairman's Letter. Reports and Notes - some extensive - from the regional SMRs, local groups and individuals, covering field survey, recording, geophysics, excavation and aerial reconaissance, ordered under General, Field Survey and then by historic period. Publications of West Midlands interest selected from recent local and national books and journals including a review of Fisherwick by Christopher Smith. Directory of West Midland individuals, archaeological groups and institutions.
Higher-order spin effects in the dynamics of compact binaries I. Equations of motion
Creators: name: Faye, Guillaume
name: Blanchet, Luc
name: Buonanno, Alessandra
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We derive the equations of motion of spinning compact binaries including the spin-orbit (SO) coupling terms one post-Newtonian (PN) order beyond the leading-order effect. For black holes maximally spinning this corresponds to 2.5PN order. Our result for the equations of motion essentially confirms the previous result by Tagoshi, Ohashi and Owen. We also compute the spin-orbit effects up to 2.5PN order in the conserved (Noetherian) integrals of motion, namely the energy, the total angular momentum, the linear momentum and the center-of-mass integral. We obtain the spin precession equations at 1PN order beyond the leading term, as well. Those results will be used in a future paper to derive the time evolution of the binary orbital phase, providing more accurate templates for LIGO-Virgo-LISA type interferometric detectors.
description: transcription error in Eqs. (2.17) corrected
West Midlands Archaeology 24
Creators: name: Carver, Martin O H
Publisher: name: Archaeology Data Service
Year: 2024

description: West Midlands Archaeology, 24
description: 171 numbered pages. Leading pages (i-iv) include Contents and a map of the region showing the position of sites reported.. Editorial Synopsis gives an overview of the work reported. There is and a tabulated index with an alphabetical list of sites, the type of work reported and the periods represented. . Part 1: Reports and Papers - Environmental archaeology in the West Midlands: A review of past and present work by James Greig and Sue Colledge, Tiddington Roman Settlement: an interim report on excavations 1980 by Nicholas Palmer, Warwickshire Museum, The Arrow Valley Prcject: an archaeological survey by Della Hooke, University of Birmingham, Medieval moated sites in Shropshire by Michael Watson, Shropshire Sites and Monuments Record, White salt-glazed stoneware manufactured at Jackfield by J P Malam, Institute of Industrial Archaeology . Part 2: West Midlands Archaeology in 1981 - gazetteer of archaeological work undertaken in the region during the year, arranged in alphabetical order by location. . Part 3: Forum - short articles for information or discussion: Field Walking as a method of extensive archaeclogical survey by M A Hodder, The archaeology of standing buildings: background to the Stoke-on-Trent Historic Buildings Survey by C F Hawke-Smith, City Museum and Art Gallery, Stoke-on-Trent, Primeval woodlands,clearance and regeneration in the West Midlands by Jim Gould. Book Reviews: Oswestry Town Wall by the Border Counties Archaeological Group, Ancient Woodland, its History, Vegetation and Uses in England by Oliver Rackham. Publications of West Midlands interest selected from recent local and national books and journals . Directory of West Midland archaeological groups and institutions.
Synthesis of a cobalt-based photoluminescent coordination complex to study quenching mechanisms of nitro compounds
Creators: name: Saira Mansab
name: Uzaira Rafique
name: Akhtar, Muhammad Javed
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: A cobalt metal coordination complex was synthesized using the bipyridyl spacer ligand along with a dicarboxylate as secondary ligand. The coordination complex was characterized using FTIR, 1H NMR, elemental analysis, thermogravimetric analysis, and powder XRD. The structure shown from single-crystal XRD revealed that each Co(II) cation in the cluster can be described as trigonal bipyramidal. Luminescence properties of the complex were investigated using different solvents. The photoluminescence (PL) spectra depicted change in band gap for THF and DCM. The complex was further investigated for ligand-based photoluminescence properties and thus used for sensing of nitro compounds. The static and dynamic quenching mechanism of nitro compounds was identified through the Stern–Volmer model.
Travaux universitaires – Bibliographie
Creators: name: Indeterminado
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Bibliografía

description: Bibliografía para trabajos universitarios.
description: Source: Num.Ref. : JC-CAR-02.013
description: Source: Localización del archivo: Centre de Recherches Latino-Américaines (CRLA–Archivos, ITEM UMR8132). MSHS - Bât. A5, 1er étage 5 rue Théodore Lefebvre - TSA21103. 86073 Poitiers cedex 9.
description: created: s.f.
EIMS with More Resolution from Synthesis of 4-substituted ethers of benzophenone and their antileishmanial activities
Creators: name: Arshia
name: , Faiza
name: , Nida
name: Kanwal
name: Mohammed, Khalid
name: , Shahnaz
name: M. Iqbal
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Biochemistry
subject: Organic Chemistry
subject: FOS: Chemical sciences

description: Leishmaniasis is a vector-borne protozoan disease, it is mainly originated from the bite of sandfly and initiated when parasite is transmitted to human at metacyclic flagellated promastigote form. In the current study, a synthesis of a series of 4-substituted benzophenone ethers 1–20 was carried out in good yields and their in vitro antileishmanial activities were also screened. Among synthetic derivatives, 15 compounds 1, 3, 5–12, 15 and 17–20 showed antileishmanial activities against promastigotes of Leishmania major with IC50 values in the range of 1.19–82.30 µg ml−1, and the values were compared with those of the standard pentamidine (IC50 = 5.09 ± 0.09 µg ml−1). Our study identified a series of new antileishmanial molecules as potential lead. Structures of these synthetic compounds were deduced by different spectroscopic techniques, such as 1H-NMR, 13C-NMR, EI-MS, HREI-MS and IR.
The effects of time delays in adaptive phase measurements
Creators: name: Berry, D. W.
name: Wiseman, H. M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is not possible to make measurements of the phase of an optical mode using linear optics without introducing an extra phase uncertainty. This extra phase variance is quite large for heterodyne measurements, however it is possible to reduce it to the theoretical limit of log(n)/(4n^2) using adaptive measurements. These measurements are quite sensitive to experimental inaccuracies, especially time delays and inefficient detectors. Here it is shown that the minimum introduced phase variance when there is a time delay of tau is tau/(8n). This result is verified numerically, showing that the phase variance introduced approaches this limit for most of the adaptive schemes using the best final phase estimate. The main exception is the adaptive mark II scheme with simplified feedback, which is extremely sensitive to time delays. The extra phase variance due to time delays is considered for the mark I case with simplified feedback, verifying the tau/2 result obtained by Wiseman and Killip both by a more rigorous analytic technique and numerically.
description: 10 pages, 4 figures, minor changes from published version
Single-shot realization of nonadiabatic holonomic quantum gates in decoherence-free subspaces
Creators: name: Zhao, P. Z.
name: Xu, G. F.
name: Ding, Q. M.
name: Sjöqvist, Erik
name: Tong, D. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nonadiabatic holonomic quantum computation in decoherence-free subspaces has attracted increasing attention recently, as it allows for high-speed implementation and combines both the robustness of holonomic gates and the coherence stabilization of decoherence-free subspaces. Since the first protocol of nonadiabatic holonomic quantum computation in decoherence-free subspaces, a number of schemes for its physical implementation have been put forward. However, all previous schemes require two noncommuting gates to realize an arbitrary one-qubit gate, which doubles the exposure time of gates to error sources as well as the resource expenditure. In this paper, we propose an alternative protocol for nonadiabatic holonomic quantum computation in decoherence-free subspaces, in which an arbitrary one-qubit gate in decoherence-free subspaces is realized by a single-shot implementation. The present protocol not only maintains the merits of the original protocol, but also avoids the extra work of combining two gates to implement an arbitrary one-qubit gate and thereby reduces the exposure time to various error sources.
description: 6 pages, no figure
Magnetic field control of cycloidal domains and electric polarization in multiferroic BiFeO$_3$
Creators: name: Bordács, S.
name: Farkas, D. G.
name: White, J. S.
name: Cubitt, R.
name: DeBeer-Schmitt, L.
name: Ito, T.
name: Kézsmárki, I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The magnetic field induced rearrangement of the cycloidal spin structure in ferroelectric mono-domain single crystals of the room-temperature multiferroic BiFeO$_3$ is studied using small-angle neutron scattering (SANS). The cycloid propagation vectors are observed to rotate when magnetic fields applied perpendicular to the rhombohedral (polar) axis exceed a pinning threshold value of $\sim$5\,T. In light of these experimental results, a phenomenological model is proposed that captures the rearrangement of the cycloidal domains, and we revisit the microscopic origin of the magnetoelectric effect. A new coupling between the magnetic anisotropy and the polarization is proposed that explains the recently discovered magnetoelectric polarization to the rhombohedral axis.
Utilization of mango seed oil as a cocoa butter replacer for the development of innovative chocolate
Creators: name: Abbas, Suleman
name: Shahbaz, Muhammad
name: Ahmad, Shabbir
name: Imran, Muhammad
name: Naeem, Hammad
name: Hussain, Muzzamal
name: Mujtaba, Ahmed
name: Mubeen, Khuram
name: Afzal, Muhammad Inam
name: Akram, Qaiser
name: Mushtaq, Zarena
name: Abdelgawad, Mohamed A.
name: Ghoneim, Mohammed M.
name: Shaker, Mohamed E.
name: AL JBawi, Entessar
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Molecular Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Chocolate is the most popular food type and flavor in this world. The key ingredient in many chocolate products is cocoa butter due to its unique fatty acid profile. Due to the expensive nature of cocoa butter, it has stimulated extensive research for fats that are cheaper and more easily available and can be used as cocoa butter substitutes. The mango (Mangifera indica) is known as the king of fruit due to its rich nutritive profile. The major parts of mango fruit are peel, pulp, and seed. Mango seed is usually discarded as waste which is a source of edible oil (7–12%). The current study was designed to produce chocolate with mango seed oil as a cocoa butter replacer. Mango seed oil was extracted using the soxhlet apparatus and its physiochemical properties were evaluated. Extracted oil was used in chocolate preparation with different proportions (0%, 30%, 70%, and 100%). Furthermore, chocolate was subjected to explore the effect of storage (21days) on product quality and sensory with 7days interval. Current results show that mango seed oil has a valuable fat profile containing palmitic acid (C16:0) 26%, stearic acid (C18:0) 36%, and oleic acid (C18:2) 33%. Moreover, innovative chocolate showed higher antioxidant activity as compared to control in different storage intervals. In addition, chocolate prepared with different proportions of mango seed oil showed higher sensory scores as compared to the control sample. The findings suggest that mango seed oil can replace cocoa butter in chocolate and reduce/manage mango seed waste to improve its antioxidant activity and nutritional value.
Probing the Magnetic Field with Molecular ion Spectra. II
Creators: name: Houde, Martin
name: Peng, Ruisheng
name: Phillips, Thomas G.
name: Bastien, Pierre
name: Yoshida, Hiroshige
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present further observational evidence in support of our earlier proposal (Houde et al. 2000) for detecting the presence of the magnetic field in molecular clouds by comparing spectra of molecular ions with those of neutral molecules. The ion lines tend to be narrower and do not show the wings due to flows, when the magnetic field is sufficiently strong. We obtained spectra for the optically thin lines of the H13CN and H13CO+ species in a sample of ten molecular clouds and found the results to be in agreement with our previous observations of the main isotopic species, HCN and HCO+, made in OMC-1, OMC-2, OMC-3 and DR21OH, thus eliminating the possibility of optical depth effects playing a role in the ion line narrowing. HCS+ was also detected in four of these star forming regions. We also discuss previously published results by (Benson et al. 1998) of N2H+ detections in a large sample of dark clouds. We show that the similarity in line widths between ion and neutral species in their sample is consistent with the relatively small amount of turbulence and other flows observed in these clouds.
description: 20 pages, 4 figures, 3 tables
X-ray crystallographic, spectroscopic, and electrochemical properties of Group 12 metal-chlorides of di-2-pyridyl ketone acetic acid hydrazone (dpkaah)
Creators: name: Bakir, Mohammed
name: Lawrence, Mark A. W.
name: Conry, Rebecca R.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer

description: Di-2-pyridyl ketone acetic acid hydrazone hydrate, dpkaah.0.5H2O (1), prepared from the acid catalyzed condensation of di-2-pyridyl ketone (dpk) with acetic acid hydrazide in refluxing ethanol, undergoes facile coordination to Group 12 metal-chlorides in CH3CN to form [MCl2(κ3-N,N,O-dpkaah)] {M=Zn (3), Cd (4) or Hg(5)}. X-ray structural analysis on single crystals of dpkaah (2) and 3–5 confirmed their identities and revealed pseudo-coordination of the carbonyl group (C=O). Infrared measurements confirmed the pseudo-coordination of the carbonyl group to MCl2. The geometries of 3–5 vary, while 5 adopts a square pyramidal geometry, 4 has a structure halfway between square pyramidal and trigonal bipyramidal and 3 is less distorted from square pyramidal than 3. The extended structures of 3–5 exposed extensive networks of non-covalent interactions, and in the case of 4 chloride bridges of the type Cd(μ-Cl)2Cd were observed. Spectroscopic measurements in different solvents and variable temperature studies confirmed the stability of the keto form of 1 and 3–5. Spectrophotometric titrations of protophilic solutions (dmf or dmso) of 1 with MCl2 revealed facile coordination of MCl2 to 1 and disclosed low concentrations of MCl2 can be detected and determined using protophilic solutions of 1. Electrochemical measurements on dmf solutions divulged electrochemical decomposition of uncoordinated 1, the facile coordination of 1 to MCl2, and the stability of 3–5 decreases as the size of the metal ion increases.
Thomasomys
Creators: name: Pacheco, Víctor
name: Ruelas, Dennisse
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Cricetidae
Thomasomys

description: Pagaibamba Thomasomys  Figures 6D, 8, 9, 10D, 11D, 11H, 12D, 13D,
description: Published as part of Pacheco, Víctor & Ruelas, Dennisse, 2023, Systematic Revision Of Thomasomys Cinereus (Rodentia: Cricetidae: Sigmodontinae) From Northern Peru And Southern Ecuador, With Descriptions Of Three New Species, pp. 1-73 in Bulletin of the American Museum of Natural History 2023 (461) on page 48, DOI: 10.1206/0003-0090.461.1.1, http://zenodo.org/record/10833272
title: Handwritten text for a presentation at the Superior School of Journalism of Lille about "the Lebanese crisis"
title: Texte manuscrit pour une présentation devant l'Ecole supérieure de journalisme de Lille sur "la crise libanaise"
title: نص مكتوب بخط اليد من أجل عرض أمام كلية الدراسات العليا في الصحافة في مدينة ليل حول "الأزمة اللبنانية"
Creators: name: Seurat, Michel
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2019

description: Source: http://www.calames.abes.fr/pub/ms/FileId-2994
On the Strong Scaling of the Spectral Element Solver Nek5000 on Petascale Systems
Creators: name: Offermans, Nicolas
name: Marin, Oana
name: Schanen, Michel
name: Gong, Jing
name: Fischer, Paul
name: Schlatter, Philipp
name: Obabko, Aleks
name: Peplinksi, Adam
name: Hutchinson, Maxwell
name: Merzari, Elia
Publisher: name: arXiv
Year: 2017
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: The present work is targeted at performing a strong scaling study of the high-order spectral element fluid dynamics solver Nek5000. Prior studies indicated a recommendable metric for strong scalability from a theoretical viewpoint, which we test here extensively on three parallel machines with different performance characteristics and interconnect networks, namely Mira (IBM Blue Gene/Q), Beskow (Cray XC40) and Titan (Cray XK7). The test cases considered for the simulations correspond to a turbulent flow in a straight pipe at four different friction Reynolds numbers $Re_τ$ = 180, 360, 550 and 1000. Considering the linear model for parallel communication we quantify the machine characteristics in order to better assess the scaling behaviors of the code. Subsequently sampling and profiling tools are used to measure the computation and communication times over a large range of compute cores. We also study the effect of the two coarse grid solvers XXT and AMG on the computational time. Super-linear scaling due to a reduction in cache misses is observed on each computer. The strong scaling limit is attained for roughly 5000 - 10,000 degrees of freedom per core on Mira, 30,000 - 50,0000 on Beskow, with only a small impact of the problem size for both machines, and ranges between 10,000 and 220,000 depending on the problem size on Titan. This work aims at being a reference for Nek5000 users and also serves as a basis for potential issues to address as the community heads towards exascale supercomputers.
description: 10 pages, 9 figures, Proceedings of the Exascale Applications and Software Conference 2016 (EASC '16, Stockholm)
A new approach to the nonsingular cubic binary moment problem
Creators: name: Curto, Raul E.
name: Yoo, Seonguk
Publisher: name: arXiv
Year: 2017
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47

description: We present an alternative solution to nonsingular cubic moment problems, using techniques that are expected to be useful for higher-degree truncated moment problems. In particular, we apply the theory of recursively determinate moment matrices to deal with a case of rank-increasing moment matrix extensions.
X-ray crystallographic, spectroscopic and electrochemical properties of Group 12 metal-chlorides of di-2-pyridyl ketone acetic acid hydrazine (dpkaah)
Creators: name: Bakir, Mohammed
name: Lawrence, Mark W.
name: Conry, Rebecca R.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer

description: Di-2-pyridyl ketone acetic acid hydrazone hydrate, dpkaah.0.5H2O (1), prepared from the acid catalyzed condensation of di-2-pyridyl ketone (dpk) with acetic acid hydrazide in refluxing ethanol, undergoes facile coordination to Group 12 metal-chlorides in CH3CN to form [MCl2(κ3-N,N,O-dpkaah)] {M = Zn (3), Cd (4) or Hg(5)}. X-ray structural analysis on single crystals of dpkaah (2) and 3-5 confirmed their identities and revealed pseudo-coordination of the carbonyl group (C=O). Infrared measurements confirmed the pseudo-coordination of the carbonyl group to MCl2. The geometries of 3-5 vary, while 5 adopts a square pyramidal geometry, 4 has a structure halfway between square pyramidal and trigonal bipyramidal and 3 is less distorted from square pyramidal than 3. The extended structures of 3-5 exposed extensive networks of non-covalent interactions, and in the case of 4 chloride bridges of the type Cd(μ-Cl)2Cd were observed. Spectroscopic measurements in different solvents and variable temperature studies confirmed the stability of the keto-form of 1 and 3-5. Spectrophotometric titrations of protophilic solutions (dmf or dmso) of 1 with MCl2 revealed facile coordination of MCl2 to 1 and disclosed low concentrations of MCl2 can be detected and determined using protophilic solutions of 1. Electrochemical measurements on dmf solutions divulged electrochemical decomposition of uncoordinated 1, the facile coordination of 1 to MCl2, and the stability of 3-5 decreases as the size of the metal ion increases.
Numerical optimization for Artificial Retina Algorithm
Creators: name: Borisyak, Maxim
name: Ustyuzhanin, Andrey
name: Derkach, Denis
name: Belous, Mikhail
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: High Energy Physics - Experiment (hep-ex)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: High-energy physics experiments rely on reconstruction of the trajectories of particles produced at the interaction point. This is a challenging task, especially in the high track multiplicity environment generated by p-p collisions at the LHC energies. A typical event includes hundreds of signal examples (interesting decays) and a significant amount of noise (uninteresting examples). This work describes a modification of the Artificial Retina algorithm for fast track finding: numerical optimization methods were adopted for fast local track search. This approach allows for considerable reduction of the total computational time per event. Test results on simplified simulated model of LHCb VELO (VErtex LOcator) detector are presented. Also this approach is well-suited for implementation of paralleled computations as GPGPU which look very attractive in the context of upcoming detector upgrades.
Higher-order spin effects in the dynamics of compact binaries II. Radiation field
Creators: name: Blanchet, Luc
name: Buonanno, Alessandra
name: Faye, Guillaume
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Motivated by the search for gravitational waves emitted by binary black holes, we investigate the gravitational radiation field of point particles with spins within the framework of the multipolar-post-Newtonian wave generation formalism. We compute: (i) the spin-orbit (SO) coupling effects in the binary's mass and current quadrupole moments one post-Newtonian (1PN) order beyond the dominant effect, (ii) the SO contributions in the gravitational-wave energy flux and (iii) the secular evolution of the binary's orbital phase up to 2.5PN order. Crucial ingredients for obtaining the 2.5PN contribution in the orbital phase are the binary's energy and the spin precession equations, derived in paper I of this series. These results provide more accurate gravitational-wave templates to be used in the data analysis of rapidly rotating Kerr-type black-hole binaries with the ground-based detectors LIGO, Virgo, GEO 600 and TAMA300, and the space-based detector LISA.
description: includes the correction of an erratum to be published in Phys. Rev. D
On the domain of the Nelson Hamiltonian
Creators: name: Griesemer, Marcel
name: Wünsch, Andreas
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q10, 81T16

description: The Nelson Hamiltonian is unitarily equivalent to a Hamiltonian defined through a closed, semibounded quadratic form, the unitary transformation being explicitly known and due to Gross. In this paper we study mapping properties of the Gross-transform in order to characterize regularity properties of vectors in the form domain of the Nelson Hamiltonian. Since the operator domain is a subset of the form domain, our results apply to vectors in the domain of the Hamiltonian was well. - This work is a continuation of our previous work on the Fröhlich Hamiltonian.
description: 25 pages, no figures
Additional file 2 of The ideal approach for treatment of cT1N+ and cT2Nany esophageal cancer.: a NCDB analysis
Creators: name: Huang, Binhao
name: Chan, Ernest G.
name: Pennathur, Arjun
name: Luketich, James D.
name: Zhang, Jie
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Virology

description: Additional file 2: Supplemental 1. Overall Survival by Treatment Strategies ( Neoadjuvant vs Adjuvant vs Combination Therapy) and different histology(ESCC vs EAC) in Clinical T1N+ and T2Nany Patients”. Supplemental 2. Multivariate analysis for overall survival in T2N0 patients using Cox regression model.
The pattern of social media use and its association with academic performance among medical students
Creators: name: Eiad AlFaris
name: Irfan, Farhana
name: Gominda Ponnamperuma
name: Jamal, Amr
name: Vleuten, Cees Van Der
name: Nassr Al Maflehi
name: Sairaa Al-Qeas
name: Awtan Alenezi
name: Mashael Alrowaished
name: Alsalman, Reem
name: Ahmed, Abdullah M. A.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Background: There are concerns that the use of social media (SM) among medical students could affect academic performance. The objectives of the study were to investigate the pattern and reasons for SM use and their association with academic performance. Methods: A stratified random sample, frequency distribution and comparison of categorical variables with Chi-square and Fisher exact tests were used. Results: Of the 97% who responded, 98% used SM. The most popular were Whatsapp (87.8%), You tube (60.8%) and Twitter (51.8%) for general use; while You tube (83.5%), Whatsapp (35.5%) and Twitter (35.3%) for learning. For general use, there was a significant higher number of visits to You tube and Facebook among male students, while the reverse was true for Instagram and Path. Around 71% visited SM >4 times/day and 55% spent 1–4 hours/day. The main reasons for SM use were entertainment (95.8%), staying up-to-date with news (88.3%), and socializing (85.5%); for academic studies (40%). There was no significant association between Grade Point Average and the frequency of daily SM use or use during lectures. Conclusions: While almost all the students used SM, only a minority used them for academic purposes. SM use was not associated with academic performance.
West Midlands Archaeology 25
Creators: name: Carver, Martin O H
Publisher: name: Archaeology Data Service
Year: 2024

description: West Midlands Archaeology, 25
description: 138 numbered pages with leading Contents page. The Editorial Synopsis gives an overview of the work reported. There is a map of the region showing the position of sites reported and a tabulated index with an alphabetical list of sites, the type of work reported and the periods represented. . Part 1: Reports and Papers - Archaeology in the Avon and Severn Valleys a review by A M Hunt, Romans and river gravels by Simon Esmonde-Cleary, Excavations at Wasperton: 2nd interim report by G Crawford; Environmental research at Wasperton: procedure and assessment by C Bowker; West Midland charters by Della Hooke; . Part 2: West Midlands Archaeology in 1982 - gazetteer of archaeological work undertaken in the region during the year, arranged in alphabetical order by location.. Part 3: Forum - short articles for information or discussion: Neolithic and Bronze Age Staffordshire, and the potential of Sites and Monuments Records by Bob Meeson, Some problems with the interpretation of features on a gravel site by P. Voice, Computer applications in archaeology - a personal report by Susan Laflin, The MA in Archaeological Practice at Birmingham University by Martin Carver, A scheme for archaeological project records by Martin Carver. . Publications of West Midlands interest selected from recent local and national books and journals . Directory of West Midland Archaeological groups and institutions.
Chasing obscuration in type-I AGN: discovery of an eclipsing clumpy wind at the outer broad-line region of NGC 3783
Creators: name: Mehdipour, M.
name: Kaastra, J. S.
name: Kriss, G. A.
name: Arav, N.
name: Behar, E.
name: Bianchi, S.
name: Branduardi-Raymont, G.
name: Cappi, M.
name: Costantini, E.
name: Ebrero, J.
name: Di Gesu, L.
name: Kaspi, S.
name: Mao, J.
name: De Marco, B.
name: Matt, G.
name: Paltani, S.
name: Peretz, U.
name: Peterson, B. M.
name: Petrucci, P. -O.
name: Pinto, C.
name: Ponti, G.
name: Ursini, F.
name: de Vries, C. P.
name: Walton, D. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In 2016 we carried out a Swift monitoring program to track the X-ray hardness variability of eight type-I AGN over a year. The purpose of this monitoring was to find intense obscuration events in AGN, and thereby study them by triggering joint XMM-Newton, NuSTAR, and HST observations. We successfully accomplished this for NGC 3783 in December 2016. We found heavy X-ray absorption produced by an obscuring outflow in this AGN. As a result of this obscuration, interesting absorption features appear in the UV and X-ray spectra, which are not present in the previous epochs. Namely, the obscuration produces broad and blue-shifted UV absorption lines of Ly$α$, C IV, and N V, together with a new high-ionisation component producing Fe XXV and Fe XXVI absorption lines. In soft X-rays, only narrow emission lines stand out above the diminished continuum as they are not absorbed by the obscurer. Our analysis shows that the obscurer partially covers the central source with a column density of few $10^{23}$ cm$^{-2}$, outflowing with a velocity of few thousand km s$^{-1}$. The obscuration in NGC 3783 is variable and lasts for about a month. Unlike the commonly-seen warm-absorber winds at pc-scale distances from the black hole, the eclipsing wind in NGC 3783 is located at about 10 light days. Our results suggest the obscuration is produced by an inhomogeneous and clumpy medium, consistent with clouds in the base of a radiatively-driven disk wind at the outer broad-line region of the AGN.
description: Accepted for publication in Astronomy & Astrophysics (A&A), 6 pages, 6 figures
Medical students' perception of test anxiety triggered by different assessment modalities
Creators: name: Guraya, Salman Y.
name: Guraya, Shaista S.
name: Habib, Fawzia
name: AlQuiliti, Khalid W.
name: Khoshhal, Khalid I.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Objectives: Test anxiety is well known among medical students. However, little is known about test anxiety produced by different components of exam individually. This study aimed to stratify varying levels of test anxiety provoked by each exam modality and to explore the students perceptions about confounding factors. Methods: A self-administered questionnaire was administered to medical students. The instrument contained four main themes; lifestyle, psychological and specific factors of information needs, learning styles, and perceived difficulty level of each assessment tool. Results: A highest test anxiety score of 5 was ranked for “not scheduling available time” and “insufficient exercise” by 28.8 and 28.3% students, respectively. For “irrational thoughts about exam” and “fear to fail”, a highest test anxiety score of 5 was scored by 28.8 and 25.7% students, respectively. The highest total anxiety score of 1255 was recorded for long case exam, followed by 975 for examiner-based objective structured clinical examination. Excessive course load and course not well covered by faculty were thought to be the main confounding factors. Conclusions: The examiner-based assessment modalities induced high test anxiety. Faculty is urged to cover core contents within stipulated time and to rigorously reform and update existing curricula to prepare relevant course material.
Tunguska genetic anomaly and electrophonic meteors
Creators: name: Silagadze, Z. K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One of great mysteries of the Tunguska event is its genetic impact. Some genetic anomalies were reported in the plants, insects and people of the Tunguska region. Remarkably, the increased rate of biological mutations was found not only within the epicenter area, but also along the trajectory of the Tunguska Space Body (TSB). At that no traces of radioactivity were found, which could be reliably associated with the Tunguska event. The main hypotheses about the nature of the TSB, a stony asteroid, a comet nucleus or a carbonaceous chondrite, readily explain the absence of radioactivity but give no clues how to deal with the genetic anomaly. A choice between these hypotheses, as far as the genetic anomaly is concerned, is like to the choice between ``blue devil, green devil and speckled devil'', to quote late Academician N.V. Vasilyev. However, if another mysterious phenomenon, electrophonic meteors, is evoked, the origin of the Tunguska genetic anomaly becomes less obscure.
description: 15 pages, LaTeX, A&A style
Semiclassical theory of cavity-assisted atom cooling
Creators: name: Domokos, Peter
name: Horak, Peter
name: Ritsch, Helmut
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a systematic semiclassical model for the simulation of the dynamics of a single two-level atom strongly coupled to a driven high-finesse optical cavity. From the Fokker-Planck equation of the combined atom-field Wigner function we derive stochastic differential equations for the atomic motion and the cavity field. The corresponding noise sources exhibit strong correlations between the atomic momentum fluctuations and the noise in the phase quadrature of the cavity field. The model provides an effective tool to investigate localisation effects as well as cooling and trapping times. In addition, we can continuously study the transition from a few photon quantum field to the classical limit of a large coherent field amplitude.
description: 10 pages, 8 figures
Time Delay Predictions in a Modified Gravity Theory
Creators: name: Moffat, J. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The time delay effect for planets and spacecraft is obtained from a fully relativistic modified gravity theory including a fifth force skew symmetric field by fitting to the Pioneer 10/11 anomalous acceleration data. A possible detection of the predicted time delay corrections to general relativity for the outer planets and future spacecraft missions is considered. The time delay correction to GR predicted by the modified gravity is consistent with the observational limit of the Doppler tracking measurement reported by the Cassini spacecraft on its way to Saturn, and the correction increases to a value that could be measured for a spacecraft approaching Neptune and Pluto.
description: 5 pages, LaTex file, no figures. Corrections to Table 1
Inner Size of a Dust Torus in the Seyfert 1 Galaxy NGC 4151
Creators: name: Minezaki, T.
name: Yoshii, Y.
name: Kobayashi, Y.
name: Enya, K.
name: Suganuma, M.
name: Tomita, H.
name: Aoki, T.
name: Peterson, B. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The most intense monitoring observations yet made were carried out on the Seyfert 1 galaxy NGC 4151 in the optical and near-infrared wave-bands. A lag from the optical light curve to the near-infrared light curve was measured. The lag-time between the V and K light curves at the flux minimum in 2001 was precisely 48+2-3 days, as determined by a cross-correlation analysis. The correlation between the optical luminosity of an active galactic nucleus (AGN) and the lag-time between the UV/optical and the near-infrared light curves is presented for NGC 4151 in combination with previous lag-time measurements of NGC 4151 and other AGNs in the literature. This correlation is interpreted as thermal dust reverberation in an AGN, where the near-infrared emission from an AGN is expected to be the thermal re-radiation from hot dust surrounding the central engine at a radius where the temperature equals to that of the dust sublimation temperature. We find that the inner radius of the dust torus in NGC 4151 is $\sim $ 0.04 pc corresponding to the measured lag-time, well outside the broad line region (BLR) determined by other reverberation studies of the emission lines.
description: Accepted for publication in ApJ Letters, 13 pages, 3 figures; Corrected typos