cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Radiative pi0 photoproduction on protons in the Delta+(1232) region
Creators: name: Schumann, S.
name: Boillat, B.
name: Downie, E. J.
name: Aguar-Bartolomé, P.
name: Ahrens, J.
name: Annand, J. R. M.
name: Arends, H. J.
name: Beck, R.
name: Bekrenev, V.
name: Braghieri, A.
name: Branford, D.
name: Briscoe, W. J.
name: Brudvik, J. W.
name: Cherepnya, S.
name: Codling, R.
name: Drexler, P.
name: Fil'kov, L. V.
name: Glazier, D. I.
name: Gregor, R.
name: Heid, E.
name: Hornidge, D.
name: Jahn, O.
name: Kashevarov, V. L.
name: Kondratiev, R.
name: Korolija, M.
name: Kotulla, M.
name: Krambrich, D.
name: Krusche, B.
name: Lang, M.
name: Lisin, V.
name: Livingston, K.
name: Lugert, S.
name: MacGregor, I. J. D.
name: Manley, D. M.
name: Martinez-Fabregate, M.
name: McGeorge, J. C.
name: Mekterovic, D.
name: Metag, V.
name: Nefkens, B. M. K.
name: Nikolaev, A.
name: Novotny, R.
name: Ostrick, M.
name: Owens, R. O.
name: Pedroni, P.
name: Polonski, A.
name: Prakhov, S. N.
name: Price, J. W.
name: Rosner, G.
name: Rost, M.
name: Rostomyan, T.
name: Sober, D.
name: Starostin, A.
name: Supek, I.
name: Tarbert, C. M.
name: Thomas, A.
name: Unverzagt, M.
name: Walcher, Th.
name: Watts, D. P.
name: Zehr, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The reaction gamma p -> p pi0 gamma' has been measured with the Crystal Ball / TAPS detectors using the energy-tagged photon beam at the electron accelerator facility MAMI-B. Energy and angular differential cross sections for the emitted photon gamma' and angular differential cross sections for the pi0 have been determined with high statistics in the energy range of the Delta+(1232) resonance. Cross sections and the ratio of the cross section to the non-radiative process gamma p -> p pi0 are compared to theoretical reaction models, having the anomalous magnetic moment kappa_Delta+ as free parameter. As the shape of the experimental distributions is not reproduced in detail by the model calculations, currently no extraction of kappa_Delta+ is feasible.
description: 14 pages, 19 figures
Additional file 2 of NAMPT/SIRT2-mediated inhibition of the p53-p21 signaling pathway is indispensable for maintenance and hematopoietic differentiation of human iPS cells
Creators: name: Xu, Yun
name: Nasri, Masoud
name: Dannenmann, Benjamin
name: Mir, Perihan
name: Zahabi, Azadeh
name: Welte, Karl
name: Morishima, Tatsuya
name: Skokowa, Julia
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2.
Near-Term Spin-Qubit Architecture Design via Multipartite Maximally-Entangled States
Creators: name: Paraskevopoulos, Nikiforos
name: Steinberg, Matthew
name: Undseth, Brennan
name: Sarkar, Aritra
name: Vandersypen, Lieven M. K.
name: Xue, Xiao
name: Feld, Sebastian
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The design and benchmarking of quantum computer architectures traditionally rely on practical hardware restrictions, such as gate fidelities, control, and cooling. At the theoretical and software levels, numerous approaches have been proposed for benchmarking quantum devices, ranging from, inter alia, quantum volume to randomized benchmarking. In this work, we utilize the quantum information-theoretic properties of multipartite maximally-entangled quantum states, in addition to their correspondence with quantum error correction codes, permitting us to quantify the entanglement generated on near-term bilinear spin-qubit architectures. For this aim, we introduce four metrics which ascertain the quality of genuine multipartite quantum entanglement, along with circuit-level fidelity measures. As part of the task of executing a quantum circuit on a device, we devise simulations which combine expected hardware characteristics of spin-qubit devices with appropriate compilation techniques; we then analyze three different architectural choices of varying lattice sizes for bilinear arrays, under three increasingly realistic noise models. We find that if the use of a compiler is assumed, sparsely-connected spin-qubit lattices can approach comparable values of our metrics to those of the most highly-connected device architecture. Even more surprisingly, by incorporating crosstalk into our last noise model, we find that, as error rates for crosstalk approach realistic values, the benefits of utilizing a bilinear array with advanced connectivity vanish. Our results highlight the limitations of adding local connectivity to near-term spin-qubit devices, and can be readily adapted to other qubit technologies. The framework developed here can be used for analyzing quantum entanglement on a device before fabrication, informing experimentalists on concomitant realistic expectations.
Tailored nano-columnar La$_2$NiO$_4$ cathodes for improved electrode performance
Creators: name: Stangl, Alexander
name: Riaz, Adeel
name: Rapenne, Laetitia
name: Caicedo, José Manuel
name: Jiménez, Carmen
name: Mermoux, Michel
name: Burriel, Mónica
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: La$_2$NiO$_4$ is a very promising cathode material for intermediate and low temperature solid oxide cell applications, due to its good electronic and ionic conductivity, together with its high oxygen exchange activity with a low activation energy. Oxygen incorporation and transport in La$_2$NiO$_4$ (L2NO4) thin films is limited by surface reactions. Hence, tailoring the morphology is expected to lead to an overall improvement of the electrode performance. We report on the growth of nano-architectured La$_2$NiO$_4$ thin film electrodes by Pulsed Injection Metal Organic Vapour Deposition (PI-MOCVD), achieving vertically gapped columns with multi-fold active surface area, leading to much faster oxygen exchange. This nano-columnar structure is rooted in a dense bottom layer serving as good electronic and ionic conduction pathway. The microstructure is tuned by modification of the growth temperature and characterised by SEM, TEM and XRD. We studied the effect of surface activity by electrical conductivity relaxation measurements in fully dense and nano-columnar La$_2$NiO$_4$ thin films of various thicknesses grown on several different single crystal substrates. Our results demonstrate that the increased surface area, in combination with the opening of different surface terminations, leads to a significant enhancment of the total exchange activity in our films with optimized nano-architectured microstructure.
Asymptotics of eigenvalues and eigenvectors of Toeplitz matrices
Creators: name: Dai, Hui
name: Geary, Zachary
name: Kadanoff, Leo P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 47B35, 15A18, 15A57, 15A60, 41A60, 41A80

description: A Toeplitz matrix is one in which the matrix elements are constant along diagonals. The Fisher-Hartwig matrices are much-studied singular matrices in the Toeplitz family. The matrices are defined for all orders, $N$. They are parametrized by two constants, $α$ and $β$. Their spectrum of eigenvalues has a simple asymptotic form in the limit as $N$ goes to infinity. Here we study the structure of their eigenvalues and eigenvectors in this limiting case. We specialize to the case $0
description: 27 pages, 13 figures, 4 tables
title: Stratigraphy and Paleoecology of the Morrison Formation, Como Bluff, Wyoming
Creators: name: Connely, Melissa V.
Publisher: name: Utah State University
Year: 2002

description: The Morrison Formation at Como Bluff, Wyoming, has been historically known for containing a rich source of Late Jurassic vertebrate fossils. However, when collected, most of these fossils were not positioned into a stratigraphic or sedimentologic framework. Research shows that the Morrison Formation at Como Bluff can be divided into three members. These members can be identified by lithologic and paleontological characteristics. The lower Morrison members include the Windy Hill Member and the recently described Lake Como Member. The Windy Hill Member primarily contains near-shore marine sandstone. Megavertebrate fauna is lacking. The Lake Como Member contains illitic clay in red and green mottled paleosols with caliche and thin sandstone beds. The fauna typically consists oflarge saurian and ornithischian dinosaurs. The upper Morrison Formation includes the Talking Rocks Member. This member contains gray-green smectite-rich mudstones. The Talking Rocks Member is generally calcareous and appears to have a megavertebrate fauna similar to the Lower Morrison. The upper part of this member is typically non calcareous and the fauna is more aquatic with turtles, crocodiles, fish and smaller ornithischian dinosaurs, including some species thought to be restricted to the Cretaceous Period. The contact between the Morrison Formation and the overlying Cloverly Formation is placed at the base of the Cloverly conglomerates, which are present throughout the region. In some areas, this boundary coincides with the Jurassic/Cretaceous boundary. However, in sections of the study area, a zone of kaolinitic carbonaceous shale with Cretaceous-like plant material can be found just below the Morrison/Cl overly contact. If this bed is Cretaceous in age, then the Morrison Formation at Como Bluff is in part Early Cretaceous and not restricted to the Late Jurassic.
The Temporal Vadalog System: Temporal Datalog-based Reasoning
Creators: name: Bellomarini, Luigi
name: Blasi, Livia
name: Nissl, Markus
name: Sallinger, Emanuel
Publisher: name: arXiv
Year: 2024
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: In the wake of the recent resurgence of the Datalog language of databases, together with its extensions for ontological reasoning settings, this work aims to bridge the gap between the theoretical studies of DatalogMTL (Datalog extended with metric temporal logic) and the development of production-ready reasoning systems. In particular, we lay out the functional and architectural desiderata of a modern reasoner and propose our system, Temporal Vadalog. Leveraging the vast amount of experience from the database community, we go beyond the typical chase-based implementations of reasoners, and propose a set of novel techniques and a system that adopts a modern data pipeline architecture. We discuss crucial architectural choices, such as how to guarantee termination when infinitely many time intervals are possibly generated, how to merge intervals, and how to sustain a limited memory footprint. We discuss advanced features of the system, such as the support for time series, and present an extensive experimental evaluation. This paper is a substantially extended version of "The Temporal Vadalog System" as presented at RuleML+RR '22. Under consideration in Theory and Practice of Logic Programming (TPLP).
Additional file 3 of NAMPT/SIRT2-mediated inhibition of the p53-p21 signaling pathway is indispensable for maintenance and hematopoietic differentiation of human iPS cells
Creators: name: Xu, Yun
name: Nasri, Masoud
name: Dannenmann, Benjamin
name: Mir, Perihan
name: Zahabi, Azadeh
name: Welte, Karl
name: Morishima, Tatsuya
name: Skokowa, Julia
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3.
Cell surface α2,3-linked sialic acid facilitates Zika virus internalization
Creators: name: Tan, Chee Wah
name: Hor, Catherine Hong Huan
name: Kwek, Swee Sen
name: Tee, Han Kang
name: Sam, I-Ching
name: Goh, Eyleen L. K.
name: Ooi, Eng Eong
name: Chan, Yoke Fun
name: Wang, Lin-Fa
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: The emergence of neurotropic Zika virus (ZIKV) raised a public health emergency of global concern. ZIKV can cross the placental barrier and infect foetal brains, resulting in microcephaly, but the pathogenesis of ZIKV is poorly understood. With recent findings reporting AXL as a type I interferon antagonist rather than an entry receptor, the exact entry mechanism remains unresolved. Here we report that cell surface sialic acid plays an important role in ZIKV infection. Removal of cell surface sialic acid by neuraminidase significantly abolished ZIKV infection in Vero cells and human induced-pluripotent stem cells-derived neural progenitor cells. Furthermore, knockout of the sialic acid biosynthesis gene encoding UDP-N-acetylglucosamine-2-epimerase/N-acetylmannosamine kinase resulted in significantly less ZIKV infection of both African and Asian lineages. Huh7 cells deficient in α2,3-linked sialic acid through knockout of ST3 β-galactoside-α2,3-sialyltransferase 4 had significantly reduced ZIKV infection. Removal of membrane-bound, un-internalized virus with pronase treatment revealed the role of sialic acid in ZIKV internalization but not attachment. Sialyllactose inhibition studies showed that there is no direct interaction between sialic acid and ZIKV, implying that sialic acid could be mediating ZIKV-receptor complex internalization. Identification of α2,3-linked sialic acid as an important host factor for ZIKV internalization provides new insight into ZIKV infection and pathogenesis.
title: Geology of the Cuesta Ridge Ophiolite Remnant near San Luis Obispo , California: Evidence for the Tectonic Setting and Origin of the Coast Range Ophiolite
Creators: name: Snow, Cameron A.
Publisher: name: Utah State University
Year: 2002

description: The Cuesta Ridge ophiolite is one of the best-preserved remnants of mid-Jurassic ophiolite in California. Geologic mapping and petrologic studies show that it comprises (1) harzburgite mantle tectonite, (2) dunite-rich mantle transition zone (MTZ), (3) wehrlite and pyroxenite, (4) isotropic gabbro, (5) sheeted dike/sill complex, (6) volcanic rocks (7) late-stage dikes and flows, and (8) tuffaceous radiolarian chert. The sheeted dike/sill complex is dominated by quartz diorite, with significant modal quartz and hornblende. The volcanic section is dominated by arc tholeiite and boninitic lavas. Boninites, with high MgO, Cr, and Ni comprise 40% of the volcanic rocks. Latestage dikes and lava flows below the overlying chert, have a MORB-like affinity. These data suggest formation in a supra-subduction zone setting with three stages of arc-related magmatism before late-stage MORB magmatism. I infer formation above the east-dipping proto-Franciscan subduction zone and suggest that ophiolite formation was terminated by a ridge subduction/collision event.
Single-dose replicon particle vaccine provides complete protection against Crimean-Congo hemorrhagic fever virus in mice
Creators: name: Scholte, Florine E. M.
name: Spengler, Jessica R.
name: Welch, Stephen R.
name: Harmon, Jessica R.
name: Coleman-McCray, JoAnn D.
name: Freitas, Brendan T.
name: Kainulainen, Markus H.
name: Pegan, Scott D.
name: Nichol, Stuart T.
name: Bergeron, Éric
name: Spiropoulou, Christina F.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Single-dose replicon particle vaccine provides complete protection against Crimean-Congo hemorrhagic fever virus in mice
title: Quaternary Geology and Landscape Evolution of Eastern Grand Canyon, Arizona
Creators: name: Anders, Matt D.
Publisher: name: Utah State University
Year: 2003

description: Tectonics and drainage evolution are controlling overall landscape incision in eastern Grand Canyon. Superimposed on downcutting are dynamic responses of hillslopes, tributary streams, and the Colorado River to glacial-interglacial climate cycles. Five tributary stream fill terraces have been identified, and luminescence dating indicates aggradation was occurring 50- 34 ka {S3), 12-7 ka (S2), and 5-3.5 ka (S1). Seven Colorado River fill terraces have been identified, and luminescence and U-series dating indicate deposition was occurring 343-322 ka (M5), 151-118 ka (M4), and 71-64 ka (M3). Aggradation by the Colorado River in eastern Grand Canyon begins during glacial advances and continues into the subsequent climate reversals. It appears to be driven by increases in sediment yield associated with glacial advances in headwater areas and glacial conditions elsewhere in the Colorado River drainage basin. Local catchments have buffered responses to climate change, with stream aggradation being driven by changes in sediment yield and hydrology of hillslopes. Tributary stream aggradation during full-glacial conditions (S3) is caused by a decrease in precipitation intensity and an increase in bedrock weathering. Aggradation during glacial-interglacial transitions (S2) and interglacial conditions (S1) is the result of increased erosion of older surficial deposits and decreases in vegetation cover. In the context of the current working model for the response of drylands to climate change, eastern Grand Canyon is distinct in that significant tributary stream aggradation occurs during full-glacial climate conditions and throughout the tributary drainage networks. This suggests that landscape response to climate change in semiarid environments may be slightly different than in arid settings. Bedrock incision by the Colorado River has been occurring at a rate of 0.13 mm/yr over middle-late Quaternary time. The technique used to make this calculation involves comparing snapshots of the river at analogous positions within its aggradation-incision cycles. The most accurate calculation results from tracing the elevation of the valley bottom through time. This method requires robust age control, but is advantageous because true bedrock incision is calculated and possible error associated with the use of short time intervals and thick fill deposits is eliminated.
Detecting the topological winding of superconducting nodes via Local Density of States
Creators: name: Engström, Lena
name: Simon, Pascal
name: Mesaros, Andrej
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Many systems are topologically trivial in the bulk, but still have non-trivial wavefunctions locally in the Brillouin zone. For example, in a small-gap Dirac material the Berry curvature is strongly peaked, but cancels over the full Brillouin zone, while in semimetals and in nodal superconductors there may be a lower-dimensional winding topology associated to the nodes. Experimentally, it is difficult to directly observe such topology. We consider general bulk Hamiltonians with nodes and chiral symmetry, extending to them the method developed in Dutreix et al. [Nature, 574(7777):219-222 (2019)], which in particular detected the winding around Dirac cones in graphene using charge modulations around an impurity. We apply our method to nodal superconductors in 2d, in presence of a (non)magnetic impurity, measured by standard or spin-polarized STM tip. We derive general conditions on the impurity scattering and on the STM tip, expressed in terms of their preference among the two chiralities, for when the measurement near the impurity captures the winding difference between any chosen pair of (Bogoliubon) Dirac cones. We emphasize the robustness of observing vortices in momentum space, in contrast to dislocations in real space, in STM data. Testing the conditions on the topological nodal superconductor proposed for monolayer NbSe2 under an in-plane magnetic field, we find that spin-polarized STM on a magnetic impurity can detect the winding of each of the 12 nodes. We conclude that a judicious choice of impurity can be a powerful tool to determine topological quantities in 2d superconducting systems as well as any nodal chiral system.
description: 18 pages, 6 figures
title: Evaluation of Chela Formation in Kambala-Livuite Area, Southern Block 0, Cabinda, Angola
Creators: name: Bias dos Santos, Alba B.
Publisher: name: Utah State University
Year: 2003

description: The abundance of good reservoir and source rocks offshore Cabinda, Angola, makes the area an attractive and successful hydrocarbon province. Block 0, offshore Cabinda, lies in the Lower Congo basin along the western coast of Africa. The stratigraphy of Block 0 consists of two major oil-rich sequences: the rift sequence (primarily lacustrine) and the post-rift sequence (primarily marine). These are separated by a thick section of evaporites, and thus are referred to as the pre-salt sequence and post-salt sequence, respectively. The Chela Formation, mid-Aptian in age, was deposited before the salt. It consists of sandstones and conglomerates locally interbedded with carbonates. It is the youngest unit of the pre-salt sequence. The top of the Chela Formation is gradational into the salt, whereas the base of the Chela unconformably overlies older pre-salt units. The regional pre-Chela unconformity corresponds to the "break up unconformity" developed as a direct response of Gondwanaland rifting that resulted in the opening of the South Atlantic Ocean and culminated with the separation of the South American and African continents. In this context, the Chela Formation represents an early post-rift transgressive unit that spans the transition from continental to marine conditions. The thickness of the Chela Formation in Block O is variable. This unit thickens westward from O to 305 m. Environments of deposition within the Chela Formation range from coastal non-marine to shallow-marine environments. The Chela Formation onshore Cabinda is a fining-upward sequence with coarse sandstone and conglomerate in the base grading to finer sandstone interbedded with mudstone. Offshore, the unit is represented by a sequence of very-fine to fine-grained sandstone, grading to siltstone, and locally interbedded with dolomitic carbonates. Sediment in the Chela Formation has a continental-block provenance, evidence that Chela detritus was supplied from an external granitic source on the southern African continent. Although no commercial accumulations of hydrocarbons have been found offshore in the Chela sandstones to date, the unit represents a potential reservoir because of hydrocarbons log porosities between 15 and 30 porosity units, the presence of hydrocarbon shows onshore, and an excellent overlying seal of thick salt.
Atmospheric mass loss and stellar wind effects in young and old systems II: Is TOI-942 the past of TOI-421 system?
Creators: name: Kubyshkina, Daria
name: Vidotto, Aline A.
name: D'Angelo, Carolina Villarreal
name: Carolan, Stephen
name: Hazra, Gopal
name: Carleo, Ilaria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The two planetary systems TOI-942 and TOI-421 share many similar characteristics, apart from their ages (50~Myr and 9~Gyr). Each of the stars hosts two sub-Neptune-like planets at similar orbits and in similar mass ranges. In this paper, we aim to investigate whether the similarity of the host stars and the configuration of the planetary systems can be taken as proof that the two systems were formed and evolved in a similar way. In paper I of this series, we performed a comparative study of these two systems using 3D modeling of atmospheric escape and its interaction with the stellar wind, for the four planets. We demonstrated that though the strong wind of the young star has a crucial effect on observable signatures, its effect on the atmospheric mass loss is minor in the evolutionary context. Here, we use atmosphere evolution models to track the evolution of planets in the younger system TOI-942 and also to constrain the past of the TOI-421 system. We demonstrate that despite all the similarities, the two planetary systems are on two very different evolutionary pathways. The inner planet in the younger system, TOI-942, will likely lose all of its atmosphere and become a super-Earth-like planet, while the outer planet will become a typical sub-Neptune. Concerning the older system, TOI-421, our evolution modeling suggests that they must have started their evolution with very substantial envelopes, which can be a hint of formation beyond the snow line.
description: 9 pages, 4 figures; Accepted for publication in MNRAS
Swan TAFE: SMS Mobile Communication Model
Creators: name: Hayes, Alexander
Publisher: name: figshare
Year: 2021
Subjects: subject: 130306 Educational Technology and Computing
subject: FOS: Educational sciences
subject: 160506 Education Policy
subject: FOS: Political science
subject: Education
subject: 130101 Continuing and Community Education
subject: 130106 Secondary Education
subject: 130108 Technical, Further and Workplace Education
subject: 130313 Teacher Education and Professional Development of Educators
subject: 130213 Vocational Education and Training Curriculum and Pedagogy
subject: 130199 Education systems not elsewhere classified

description: Swan Technical and Further Education College (TAFE) situated in Perth, Western Australia is poised to commence research and development of a whole organisation short messaging system (SMS). A team of practitioners from a range of disciplines and trade areas led by mobile learning expert Alexander Hayes from the Swan Education District Office, will engage with students and other practitioners in a project comprising many differing trial types and modes of creative enterprise. The onset of handheld and wearable computing is ‘shaking up’ real-world occupational engagement with employers now rapidly adapting these technologies particularly in modalities where the machine-computer transactional interface can improve or speed up task completion. These technologies according to Research and Development Officer Alexander Hayes have the potential to revolutionise the way in which pedagogy is delivered ‘in the hand and an always on learning as a natural extension of the classroom’.
Cell surface α2,3-linked sialic acid facilitates Zika virus internalization
Creators: name: Wah Tan, Chee
name: Hor, Catherine Hong Huan
name: Sen Kwek, Swee
name: Tee, Han Kang
name: Sam, I-Ching
name: L. K. Goh, Eyleen
name: Eong Ooi, Eng
name: Fun Chan, Yoke
name: Wang, Lin-Fa
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: The emergence of neurotropic Zika virus (ZIKV) raised a public health emergency of global concern. ZIKV can cross the placental barrier and infect foetal brains, resulting in microcephaly, but the pathogenesis of ZIKV is poorly understood. With recent findings reporting AXL as a type I interferon antagonist rather than an entry receptor, the exact entry mechanism remains unresolved. Here we report that cell surface sialic acid plays an important role in ZIKV infection. Removal of cell surface sialic acid by neuraminidase significantly abolished ZIKV infection in Vero cells and human induced-pluripotent stem cells-derived neural progenitor cells. Furthermore, knockout of the sialic acid biosynthesis gene encoding UDP-N-acetylglucosamine-2-epimerase/N-acetylmannosamine kinase resulted in significantly less ZIKV infection of both African and Asian lineages. Huh7 cells deficient in α2,3-linked sialic acid through knockout of ST3 β-galactoside-α2,3-sialyltransferase 4 had significantly reduced ZIKV infection. Removal of membrane-bound, un-internalized virus with pronase treatment revealed the role of sialic acid in ZIKV internalization but not attachment. Sialyllactose inhibition studies showed that there is no direct interaction between sialic acid and ZIKV, implying that sialic acid could be mediating ZIKV-receptor complex internalization. Identification of α2,3-linked sialic acid as an important host factor for ZIKV internalization provides new insight into ZIKV infection and pathogenesis.
Single-dose replicon particle vaccine provides complete protection against Crimean-Congo hemorrhagic fever virus in mice
Creators: name: E. M. Scholte, Florine
name: R. Spengler, Jessica
name: R. Welch, Stephen
name: Harmon, Jessica R.
name: D. Coleman-McCray, JoAnn
name: Freitas, Brendan T.
name: Kainulainen, Markus H.
name: Pegan, Scott D.
name: T. Nichol, Stuart
name: Bergeron, Éric
name: F. Spiropoulou, Christina
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Single-dose replicon particle vaccine provides complete protection against Crimean-Congo hemorrhagic fever virus in mice
Emission lines of Fe XI in the 257--407 A wavelength region observed in solar spectra from EIS/Hinode and SERTS
Creators: name: Keenan, F. P.
name: Milligan, R. O.
name: Jess, D. B.
name: Aggarwal, K. M.
name: Mathioudakis, M.
name: Thomas, R. J.
name: Brosius, J. W.
name: Davila, J. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Theoretical emission-line ratios involving Fe XI transitions in the 257-407 A wavelength range are derived using fully relativistic calculations of radiative rates and electron impact excitation cross sections. These are subsequently compared with both long wavelength channel Extreme-Ultraviolet Imaging Spectrometer (EIS) spectra from the Hinode satellite (covering 245-291 A), and first-order observations (235-449 A) obtained by the Solar Extreme-ultraviolet Research Telescope and Spectrograph (SERTS). The 266.39, 266.60 and 276.36 A lines of Fe XI are detected in two EIS spectra, confirming earlier identifications of these features, and 276.36 A is found to provide an electron density diagnostic when ratioed against the 257.55 A transition. Agreement between theory and observation is found to be generally good for the SERTS data sets, with discrepancies normally being due to known line blends, while the 257.55 A feature is detected for the first time in SERTS spectra. The most useful Fe XI electron density diagnostic is found to be the 308.54/352.67 intensity ratio, which varies by a factor of 8.4 between N_e = 10^8 and 10^11 cm^-3, while showing little temperature sensitivity. However, the 349.04/352.67 ratio potentially provides a superior diagnostic, as it involves lines which are closer in wavelength, and varies by a factor of 14.7 between N_e = 10^8 and 10^11 cm^-3. Unfortunately, the 349.04 A line is relatively weak, and also blended with the second-order Fe X 174.52 A feature, unless the first-order instrument response is enhanced.
description: 9 pages, 5 figures, 13 tables; MNRAS in press
title: Lower Paleozoic Sequence Stratigraphy, Deposystems and Paleogeography of Northwestern Ordos Basin, North China
Creators: name: Kessel, Benjamin J.
Publisher: name: Utah State University
Year: 2006

description: The Ordos basin rests upon the North China Block and is one of the largest sedimentary basins in north China, with more than 15 km of Phanerozoic strata. Published estimates suggest that over 2000 m of carbonates and lesser amounts of siliciclastics were deposited on the North China Carbonate Platform (NCCP) from the Lower Can1brian through the Middle Ordovician. However, lower Paleozoic facies successions and deposystems of northwestern Ordos basin remain poorly represented in western literature. This paper constrains depositional environments, lithologies, facies relationships and sea-level history of the northwestern part of the North China block (NCB) in an effort to further document the Early Paleozoic geologic history of western Ordos basin. New stratigraphic data come largely from measured sections in the Zhuozi Shan and Helan Shan in northwest Ordos basin. Strata in the mountains of northwestern Ordos are divided into eleven lithofacies assemblages, distinguished by lithology, stacking patterns and sedimentary structures. Lithofacies assemblages in northwest Ordos are grouped into four lithostratigraphic units that make up the composite type section. Unit A is dominantly composed of shale and mudrock lithofacies, Unit B is dominantly composed of thin-bedded lime mudstone and banded and bioturbated lime mudstone to wackestone, Unit C is dominantly composed of quartz sandstone and dolostone and Unit D is dominantly composed of fossiliferous packstone. These four units were observed in all lower Paleozoic sections of the Helan Shan and Zhuozi Shan. Deposition of Middle Cambrian through lowermost Lower Ordovician strata in northwest Ordos basin occurred on a storm-influenced, mixed siliciclastic and carbonate, shallow-water ramp. Lateral trends in quartz sandstone, paleokarsts, thrombolites and section thickness suggest that accommodation space increased to the south. The depositional architecture changed in the Middle Ordovician to a carbonate shelf environment. The sea-level history of northwestern Ordos shows transgression through the Late Can1brian, regression in the Early Ordovician, followed by a Middle Ordovician transgression, corresponding with North American sea level signatures. Lower Paleozoic sections in northwestern Ordos basin are broadly similar to those previously described in western literature. However, based upon stratigraphic data, shoreline trends of the NCCP model are proved inapplicable to northwestern Ordos. There is no evidence for lower Paleozoic tectonics such as aulacogen-controlled subsidence and platform tilting as described by previous workers. The sea-level history interpreted for northwest Ordos basin is more similar to North American curves than to the North China Carbonate Platform model, suggesting a eustatic control on lithofacies stacking patterns in northwest Ordos basin.
title: Quaternary Evolution of the Colorado River at Lees Ferry, Arizona
Creators: name: Cragun, William Scott
Publisher: name: Utah State University
Year: 2007

description: A well-exposed suite of Colorado River fill terraces preserved at Lees Ferry records the oscillating history of this major river superimposed on its overall downcutting of the Colorado Plateau. Detailed mapping, sedimentology, cross-sectional surveys, and the use of two geochronometers have been used in order to establish a detailed chronostratigraphy for the area. Eight distinct deposits have been identified along the Colorado River (Ml -M7, and S3), and four deposits have been identified along the Paria River (Pl -P4). Geochronology of six of these deposits using optically stimulated luminescence and cosmogenic 10Be exposure techniques indicates a long-term average bedrock incision rate of 290 to 470 m/my. These incision rates are approximately two to three times higher than others reported in Grand Canyon and the upper Colorado River basin, but are similar to the recently reported high incision rates near Glen Canyon and along the Fremont River. These results suggest that there is a region of faster incision along the Colorado River in the central Colorado Plateau in the vicinity of Lees Ferry and Glen Canyon. This apparent increase in central plateau Pleistocene incision rates may be caused by either epeirogenic uplift due to tectonics and erosional isostatic rebound, or transient waves of incision in response to original drainage integration. In addition to recording the incision history of the Colorado River, the well-preserved Pleistocene fluvial terraces provide evidence regarding the timing and processes of terrace formation at Lees Ferry. Chronostratigraphic analysis indicates that aggradation was occurring at - 20 ka (M2), - 70 to 40 ka (M3), - 115 to 90 ka (M4), and - 130 ka (MS). Aggradation and incision along the Paria River appears to be occurring at the same time as that on the Colorado River. Deposits at Lees Ferry are generally younger than correlative deposits in headwater catchments and in eastern Grand Canyon. ln addition, the most prominent deposit in the Lees Ferry area (M4) correlates to MIS stage 5b-c, a time in which no glaciations have been reported in headwater drainages. Data from this study indicate that fluvial responses at Lees Ferry are a complicated integration of signals from climate change in headwater catchments and sediment production from local hillslopes and tributaries.
A wide-orbit giant planet in the high-mass b Centauri binary system
Creators: name: Janson, Markus
name: Gratton, Raffaele
name: Rodet, Laetitia
name: Bonnefoy, Mickael
name: Delorme, Philippe
name: Mamajek, Eric E.
name: Reffert, Sabine
name: Stock, Lukas
name: Marleau, Gabriel-Dominique
name: Langlois, Maud
name: Chauvin, Gael
name: Desidera, Silvano
name: Ringqvist, Simon
name: Mayer, Lucio
name: Viswanath, Gayathri
name: Squicciarini, Vito
name: Meyer, Michael R.
name: Samland, Matthias
name: Petrus, Simon
name: Helled, Ravit
name: Kenworthy, Matthew A.
name: Quanz, Sascha P.
name: Biller, Beth
name: Henning, Thomas
name: Mesa, Dino
name: Engler, Natalia
name: Carson, Joseph C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Planet formation occurs around a wide range of stellar masses and stellar system architectures. An improved understanding of the formation process can be achieved by studying it across the full parameter space, particularly toward the extremes. Earlier studies of planets in close-in orbits around high-mass stars have revealed an increase in giant planet frequency with increasing stellar mass until a turnover point at 1.9 solar masses, above which the frequency rapidly decreases. This could potentially imply that planet formation is impeded around more massive stars, and that giant planets around stars exceeding 3 solar masses may be rare or non-existent. However, the methods used to detect planets in small orbits are insensitive to planets in wide orbits. Here we demonstrate the existence of a planet at 560 times the Sun-Earth distance from the 6-10 solar mass binary b Centauri through direct imaging. The planet-to-star mass ratio of 0.10-0.17% is similar to the Jupiter-Sun ratio, but the separation of the detected planet is ~100 times wider than that of Jupiter. Our results show that planets can reside in much more massive stellar systems than what would be expected from extrapolation of previous results. The planet is unlikely to have formed in-situ through the conventional core accretion mechanism, but might have formed elsewhere and arrived to its present location through dynamical interactions, or might have formed via gravitational instability.
description: Manuscript version. Published in Nature 9 December 2021
title: Sequence Stratigraphy of the Middle Cambrian Marjum Formation: Response of Sedimentary Facies and Biota to Sea-level Changes
Creators: name: Smith, Douglas D.
Publisher: name: Utah State University
Year: 2007

description: Research on the Marjum Formation provides insight into facies transitions in the House Range embayment of southwestern Utah during the Middle Cambrian. Sections of the Marjum Formation and equivalents were measured in strata representing shallow- (Drum Mountains), intermediate- (Wheeler Amphitheater), and deep-ramp (Marjum Pass) environments. This traverse across the embayment reveals strong litho- and biofacies changes. The Drum Mountains strata (343 m thick) are dominated by thickbedded shallow-water limestone facies containing polymerid trilobites and stromatolites. The Wheeler Amphitheater locality (392 m thick) provides an example of intermediate deposits between deep-water and shallow-water environments and is characterized by limestone and subordinate shale facies containing polymerid and agnostid trilobites, brachiopods, and sponge spicules. The Marjum Pass locality (424 m thick) contains equal parts shale and limestone facies with abundant fossils that include polymerid and agnostid trilobites, sponge spicules and soft bodied algae, representing deep-water environments. Migration of litho- and biofacies observed within Marjum Formation sections across the embayment shows carbonate ramp build-up and progradation from the Drum Mountains to the Swasey Peak, Wheeler Amphitheater area. Lateral migration of deepwater shale and rhythmite-producing turbidite facies can also be observed on a larger timescale from the Drum Mountains, during the early Bolaspidella time (Wheeler Formation deposits), to the Marjum Pass area (Marjum Formation deposits) by late Bolaspidella time. The Marjum Formation records two, third order shoaling-upward sequences. Fourth, fifth, and higher-frequency (rhythmite) cycles superimposed on these third order sequences can also be identified within the formation and are best preserved within the relatively deep-water deposits at Marjum Pass. Identification of sampled trilobites allowed correlation of known fauna! turnovers found by Robison and Vorwald with observed strata and systems tracts from this study. Stratigraphic locations of trilobite fauna! turnovers were found to be associated with transgressive systems tracts in the Drum Mountains and Marjum Pass localities. Fauna! turnover associated with significant sea-level events within these systems tracts suggests change in water depth altered the local environment forcing extinction and/or migration of organisms. Peak values of total organic carbon (TOC) at each measured section were also found to have a close relationship with maximum flooding zones. Associations of peak TOC values and fauna! turnovers with significant sea-level events demonstrate the value of these tools for correlation across the embayment.
Novel reassortant of H1N1 swine influenza virus detected in pig population in Russia
Creators: name: Sobolev, Ivan
name: Kurskaya, Olga
name: Leonov, Sergey
name: Kabilov, Marsel
name: Alikina, Tatyana
name: Alekseev, Alexander
name: Yushkov, Yuriy
name: Saito, Takehiko
name: Uchida, Yuko
name: Mine, Junki
name: Shestopalov, Alexander
name: Sharshov, Kirill
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Pigs play an important role in interspecies transmission of the influenza virus, particularly as “mixing vessels” for reassortment. Two influenza A/H1N1 virus strains, A/swine/Siberia/1sw/2016 and A/swine/Siberia/4sw/2017, were isolated during a surveillance of pigs from private farms in Russia from 2016 to 2017. There was a 10% identity difference between the HA and NA nucleotide sequences of isolated strains and the most phylogenetically related sequences (human influenza viruses of 1980s). Simultaneously, genome segments encoding internal proteins were found to be phylogenetically related to the A/H1N1pdm09 influenza virus. In addition, two amino acids (129–130) were deleted in the HA of A/swine/Siberia/4sw/2017 compared to that of A/swine/Siberia/1sw/2016 HA.
Enhanced lensing rate by clustering of massive galaxies: newly discovered systems in the SLACS fields
Creators: name: Newton, Elisabeth R.
name: Marshall, Philip J.
name: Treu, Tommaso
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: [Abridged] We exploit the clustering of massive galaxies to perform a high efficiency imaging search for gravitational lenses. Our dataset comprises 44 fields imaged by the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS), each of which is centered on a lens discovered by the Strong Lens ACS Survey (SLACS). We compare four different search methods: 1) automated detection with the HST Archive Galaxy-scale Gravitational Lens Survey (HAGGLeS) robot, 2) examining cutout images of bright galaxies (BGs) after subtraction of a smooth galaxy light distribution, 3) examining the unsubtracted BG cutouts, and 4) performing a full-frame visual inspection of the ACS images. We compute purity and completeness and consider investigator time for the four algorithms, using the main SLACS lenses as a testbed. The first and second algorithms perform the best. We present the four new lens systems discovered during this comprehensive search, as well as one other likely candidate. For each new lens we use the fundamental plane to estimate the lens velocity dispersion and predict, from the resulting lens geometry, the redshifts of the lensed sources. Two of these new systems are found in galaxy clusters, which include the SLACS lenses in the two respective fields. Overall we find that the enhanced lens abundance (30^{+24}_{-8} lenses/degree^2) is higher than expected for random fields (12^{+4}_{-2} lenses/degree^2 for the COSMOS survey). Additionally, we find that the gravitational lenses we detect are qualitatively different from those in the parent SLACS sample: this imaging survey is largely probing higher-redshift, and lower-mass, early-type galaxies.
description: submitted to ApJ; 19 pages, 12 figures
Landscape assessment in metropolitan areas – developing a visual indicator-based approach
Creators: name: Tveit, Mari Sundli
name: Ode Sang, Asa
Publisher: name: SPOOL
Year: 2014
Subjects: urban landscapes; landscape preferences; landscape assessment; landscape elements; green structure; perception

description: Many studies have addressed landscape preferences in rural settings, identifying key aspects and elements of the visual landscape important for people’s appreciation. Information about these characteristics of landscapes has then been used as bases for indicator frameworks linking measurable indicators to landscape aesthetic theory. However, there is a need to expand and develop these frameworks to be relevant for assessment of metropolitan landscapes. Nine key concepts, identified by Tveit et al. (2006) and Ode et al (2008), in existing frameworks for visual landscape assessment, stewardship, naturalness, complexity, imageability, visual scale, historicity, coherence, disturbance and ephemera, are revisited in a metropolitan context, identifying landscape elements and indicators relevant for measuring visual landscape character in metropolitan areas. The study reviews existing evidence of people’s landscape preferences relating to urban landscapes and links this knowledge to map-based indicators that can be used by planners and decision-makers responsible for the management and monitoring of landscapes. This paper presents the key concepts in development of a theoretical framework for visual landscape assessment in metropolitan areas.
description: SPOOL, Vol 1 No 1: Landscape metropolis #1