cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Half Quantum Vortices in Nematic Superconductor
Creators: name: How, Pye Ton
name: Yip, Sung-Kit
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Motivated by the superconductivity of $M_x$Bi$_2$Se$_3$, we study topological excitations in a nematic superconductor using Ginzburg-Landau theory. An isolated excitation at low field is shown to be either a distorted phase vortex or a tightly-bounded pair of half quantum vortices. Close to upper critical field $H_{c2}$, the vortex lattice is shown to be always hexagonal in the extreme type-II limit. Due to the different symmetries of the vortex lattice states, at least two phase transitions must take place when the external field is lowered from $H_{c2}$.
description: Main text: 12 pages, 7 figures. The main text is expanded into a full-length paper
Phase and group velocities for correlation spreading in the Mott phase of the Bose-Hubbard model in dimensions greater than one
Creators: name: Mokhtari-Jazi, Ali
name: Fitzpatrick, Matthew R. C.
name: Kennett, Malcolm P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Lieb-Robinson and related bounds set an upper limit on the rate of spreading of information in non-relativistic quantum systems. Experimentally, they have been observed in the spreading of correlations in the Bose-Hubbard model after a quantum quench. Using a recently developed two particle irreducible (2PI) strong coupling approach to out-of-equilibrium dynamics in the Bose-Hubbard model we calculate both the group and phase velocities for the spreading of single-particle correlations in one, two and three dimensions as a function of interaction strength. Our results are in quantitative agreement with measurements of the velocities for the spreading of single particle correlations in both the one and two dimensional Bose-Hubbard model realized with ultra-cold atoms. They also agree with the claim that the phase velocity rather than the group velocity was observed in recent experiments in two dimensions. We demonstrate that there can be large differences between the phase and group velocities for the spreading of correlations and also explore the variation of the anisotropy in the velocity at which correlations spread across the phase diagram of the Bose-Hubbard model. Our results establish the 2PI strong coupling approach as a powerful tool to study out-of-equilibrium dynamics in the Bose-Hubbard model in dimensions greater than one.
description: 5 pages, 6 figures, supplementary materials
Dinamica dell'investimento in Italia. (The dynamics of investment in Italy, 1951-1967)
Creators: name: CAMPOLONGO, A.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Investment, Italy, growth, policy, trends
subject: E22, E61

description: The article examines the overall trend of investment in Italy from 1951 onward in relation to the trend of the other parameters of the country’s economic growth, to the targets set out in the National Economic Development Plan 1966-1970, and to financing problems. In order to evaluate investment trends, the author analyses the main economic aggregates: Net National Product, depreciation, Gross National Product, imports and exports, total resources, and expenditure in consumption and investment. Taking into consideration the growth in population, in the years from 1951 to 1967 GNP increased at an average annual rate of 4.7 percent. This rate is relatively high compared with those of the country’s other historical periods and other comparable countries. JEL: E22, E61
description: Moneta e Credito, V. 21, N. 82 (1968)
Xystosomus turgidus Schaum 1863
Creators: name: Erwin, Terry L.
Publisher: name: Zenodo
Year: 1973
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Xystosomus
Xystosomus turgidus

description: 32. Xystosomus turgidus (Schaum) Tachys turgidus Schaum 1863:89. [Type missing from the point; lost in mail during transport to J. Negre, December 1963, according to Hieke's note on pin in HUB. Neotype, female, here selected from MCZ material determined by Van Emden, who undoubtedly saw the type. Type-locality: Originally "Brasilia," according to Schaum and labels, but herewith restricted to Nova Teutonia, Santa Catarina, Brazil, from labels appearing on selected neotype.] DESCRIPTION.—Form: As in X. laevimicans . Easily distinguished from all other species in the group by the absence of lateral setigerous pores at the hind angles of the pronotum together with the obtuse hind angles of the pronotum. Color: Head and forebody rufopiceous; elytra usually darker; pronotum and elytra moderately iridescent; appendages testaceous; antennae slightly infuscated apically. Head: Broad between eyes; frontal furrows shal- lowly impressed, straight, posteriorly divergent; eyes small, large-faceted, slightly prominent. Pronotum (Figure 62): Broadly transverse (W/L, x 1.75; range, 1.62-1.86; 18 specimens); anterior pair of lateral setigerous pores present at apical third, posterior pair absent; laterobasal carinae rudi- mentary; hind angles sharp, obtuse, sides anterior to angles more or less straight; side margins beaded, not reflexed. Elytra: Smooth; seta Eo4 in position d rather than c; plica small, evident externally. Microsculpture: As in Figure 22 d,e. Secondary sexual characters: Male unknown. Female genitalia characteristic of the species group. Size: Eighteen specimens: length, 2.0-2.4 mm; width, 1.0-1.2 mm. NATURAL HISTORY.— Unknown, except adults collected in December, January, and February. One teneral specimen collected in December. The Nova Teutonia specimens were collected at 300-500 meters elevation. LOCALITY RECORDS (Figure 72).— I have seen 18 specimens from the following localities: SOUTH AMERICA: BRAZIL: Mato Grosso Province: Caraguata (MCZ). Santa Catarina Province: Nova Teutonia (MCZ, USNM).
description: Published as part of Erwin, Terry L., 1973, Studies of the subtribe Tachyina (Coleoptera: Carabidae: Bembidiini), Part I: A revision of the Neotropical genus Xystosomus Schaum, pp. 1-39 in Smithsonian Contributions to Zoology 140 on pages 34-35, DOI: 10.5479/si.00810282.140, http://zenodo.org/record/3828531
Chaos Beyond Linearized Stability Analysis: Folding of the Phase Space and Distribution of Lyapunov Exponents
Creators: name: Silvestrov, P. G.
name: Ponomarev, I. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider a mechanism for area preserving Hamiltonian systems which leads to the enhanced probability, $P(λ, t)$, to find small values of the finite time Lyapunov exponent, $λ$. In our investigation of chaotic dynamical systems we go beyond the linearized stability analysis of nearby divergent trajectories and consider folding of the phase space in the course of chaotic evolution. We show that the spectrum of the Lyapunov exponents $F(λ)= \lim_{t\to\infty} t^{-1}\ln P(λ, t)$ at the origin has a finite value $F(0)=-\tildeλ$ and a slope $F'(0)\le 1$. This means that all negative moments of the distribution $$ are saturated by rare events with $λ\to 0$. Extensive numerical simulations confirm our findings.
description: 10 pages, 5 figures
title: Ice age wetland biogeochemistry: The influence of carbon dioxide starvation on wetland methane emissions
Creators: name: Boardman, Carl Philip
Publisher: name: The Open University
Year: 2010

description: Ice core records show that the atmospheric concentration of methane (CH4) during the Last Glacial Maximum (LGM) was 40-50% lower than during the preindustrial Holocene. To understand this natural variation it is important to know how the sources and sinks of CH4 change over time. Natural wetlands were the single largest contributor of CH4 to the atmosphere in glacial times, yet models used to estimate their behaviour and CH4 flux are largely based around relationships derived under modem day conditions. This thesis responds to this issue by exposing wetland mesocosms with contrasting nutrient availability, to the atmospheric concentration of carbon dioxide (CO2) present at the LGM for 2 years.

 At the end of this experiment, total CH4 flux was suppressed by an average of 29% in the nutrient rich fen (P < 0.05). In contrast, the nutrient poor bog showed no response to the treatment (P > 0.05). Further exploring the effects of CO2 starvation showed that the fen ecosystem exhibited notable reductions in dissolved organic carbon, dissolved CH4 and a change in the response of CH4 flux to changing temperature, variables and relationships which all remained unchanged in the bog. The contrasting response of the two ecosystems to CO2 starvation could be largely explained by differences in nutrient status, species composition and dominant CH4 production pathways. In particular, it is hypothesised that bog plants under LGM CO2 concentrations supplemented photosynthesis through the use of subsurface derived CO2, thus counteracting the treatment effect.

 The results from this thesis suggest that the CH4 source strength of late-glacial and early Holocene wetlands may currently be over-estimated because fen ecosystems are a far smaller CH4 source under low atmospheric [CO2] than they are today. Furthermore, the results provide new insights into the role of glacial atmospheric CO2 concentrations in influencing CH4 emissions from terrestrial ecosystems and provide empirical evidence for a connection between glacial-interglacial changes in atmospheric CH4 and CO2 concentrations observed in ice cores.
Livelli comparati di produttività nei paesi sviluppati. (Comparative productivity levels in the developed countries)
Creators: name: MADDISON, A.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Productivity, relative productivity levels, comparisons
subject: O47, O57

description: In the past decade the concern with economic growth has been so great that the empirical study of productivity levels has been relatively neglected. Estimates of the present standing of different countries must therefore rely mainly on extrapolations of work done a decade ago. One reason why this field has been neglected is that the O.E.E.C explored the subject of real G.N.P. levels pretty thoroughly in studies published from 1954 to 1959 and these still provide a reasonably firm basis for extrapolation. The present work uses such studies in order to estimate the relative productivity levels in 1965 of 8 West European countries, Japan, the U.S.A. and the U.S.S.R. JEL: O47, O57
description: Moneta e Credito, V. 21, N. 82 (1968)
Il modello di Heckscher-Ohlin e la struttura tariffaria dei paesi industrializzati. (The Heckscher-Ohlin model and the tariff structures of the industrial countries)
Creators: name: ZANDANO, G.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Trade, Heckscher-Ohlin, protectionism, tariffs, factor-proportions theory
subject: F12, F13, F16

description: Some recent empirical researches on the tariff structure of industrial countries have again drawn the attention to the problem of the empirical relevance of the Heckscher-Ohlin theory of trade and - incidentally - to the related question of the legitimacy of the discrimination charge levelled by the “third world” against the tariff schedules of the developed countries. Two studies in particular have argued that the relationship between labour intensity and protection is not definite. The present paper shows that these findings are based on the use of an inadequate definition of the factor-proportions concept. A correct identification of labor-intensive and capital-intensive manufacturers leads to fully different conclusions, which do not require the rejection of the factor-proportions theory of trade and show that the tariff schedules of some industrial countries are clearly biased against imports of manufacturers from developing countries. JEL: F12, F13, F16
description: Moneta e Credito, V. 21, N. 82 (1968)
Intensity distribution of scalar waves propagating in random media
Creators: name: Markos, P.
name: Soukoulis, C. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Transmission of the scalar field through the random medium, represented by the system of randomly distributed dielectric cylinders is calculated numerically. System is mapped to the problem of electronic transport in disordered two-dimensional systems. Universality of the statistical distribution of transmission parameters is analyzed in the metallic and in the localized regimes.In the metallic regime the universality of the transmission statistics in all transparent channels is observed. In the band gaps, we distinguish the disorder induced (Anderson) localization from the tunneling through the system due to the gap in the density of states. We show also that absorption causes rapid decrease of the mean conductance, but, contrary to the localized regime, the conductance is self-averaged with a Gaussian distribution.
Minimal Unitary Realizations of Exceptional U-duality Groups and Their Subgroups as Quasiconformal Groups
Creators: name: Gunaydin, M.
name: Pavlyk, O.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the minimal unitary representations of noncompact exceptional groups that arise as U-duality groups in extended supergravity theories. First we give the unitary realizations of the exceptional group E_{8(-24)} in SU*(8) as well as SU(6,2) covariant bases. E_{8(-24)} has E_7 X SU(2) as its maximal compact subgroup and is the U-duality group of the exceptional supergravity theory in d=3. For the corresponding U-duality group E_{8(8)} of the maximal supergravity theory the minimal realization was given in hep-th/0109005. The minimal unitary realizations of all the lower rank noncompact exceptional groups can be obtained by truncation of those of E_{8(-24)} and E_{8(8)}. By further truncation one can obtain the minimal unitary realizations of all the groups of the "Magic Triangle". We give explicitly the minimal unitary realizations of the exceptional subgroups of E_{8(-24)} as well as other physically interesting subgroups. These minimal unitary realizations correspond, in general, to the quantization of their geometric actions as quasi-conformal groups as defined in hep-th/0008063.
description: 28 pages. Latex commands removed from the abstract for the arXiv. No changes in the manuscript
Changes in teachers' conceptions of critical thinking
Creators: name: Loewen, Evelyn
Publisher: name: University of British Columbia
Year: 2011

description: This study investigated the changes in teachers' conceptions of critical thinking as they implemented a new curriculum resource that was based on a critical thinking approach. It described the teachers' ideas about the purposes for, benefits of, problems encountered while, and conditions requisite to teaching critical thinking. It also took into account the changes in teachers' conceptions of critical thinking within the unique context of a faith-based independent school. The school was located in a large metropolitan district in British Columbia. Three intermediate teachers (grades five and six) in one elementary school were interviewed at the beginning, middle and end of the implementation period to gather their perceptions about teaching critical thinking while using the new materials. The interview transcripts were analyzed for indicators of change for each teacher's conception of teaching critical thinking, and then analyzed for similarities and differences between the teachers' reported experiences. It was found that the first year teacher, who was very knowledgeable about the new resource through her university training, experienced change by way of disappointment from unmet expectations and struggled to implement the critical thinking pedagogy and curriculum content due to various complexities associated with being a beginning teacher. Another teacher with a dozen years of classroom experience enthusiastically implemented the new unit and was highly focused on the execution of the lessons. She, however, did not invest time in reviewing the introductory information where the critical thinking conception and pedagogical approach were explained. Consequently, her conception of critical thinking and pedagogy did not change significantly. The third participant had twenty-six years of experience in the study school and possessed a basic understanding of critical thinking. She was hesitant to be involved in implementing a new curriculum resource because she anticipated being stretched professionally. Ultimately, she experienced ongoing changes in her conception of critical thinking that affected various aspects of her work as a classroom teacher. All three participants indicated the value of teaching critical thinking in tandem with the faith perspective that is integrated into all aspects of the curriculum at this particular independent school.
Trophic transfer, bioaccumulation, and potential health risk of trace elements in water and aquatic organisms of Yundang Lagoon at Xiamen in China
Creators: name: Uddin, Mohammad Mazbah
name: Peng, Guogan
name: Huang, Lingfeng
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: In this study, distribution and accumulation of trace elements (Cr, Mn, Ni, Cu, Zn, As, Cd, and Pb) in water, tissues of aquatic organisms (e.g. fishes: Oreochromis niloticus, Platycephalus indicus, Clupanodon punctatus; crabs: Charybdis japonica, Portunus sanguinolentus, and Charybdis varuegata; prawns: Litopenaeus vannamei, Metapenaeus joyneri, Penaeus japonicas, Penaeus penicillatus; mollusks: Mytilus spp., Perna spp.), and trophic transfer in food web were investigated in Yundang Lagoon at Xiamen in China. Most of the studied metals such as Cr, Mn, Ni, Cu, Cd, and Pb were biodiluted in the food web except As which was biomagnified in the food web. Moreover, the target hazard quotient and total target hazard quotient risk values were higher than threshold limit values indicating that non-carcinogenic health risk to the inhabitants due to consumption of aquatic organisms.
ELABORATION D'UN CAHIER DIS CHARGES ENTRE LES PRODUCTEURS DE GOYAVE ET ROYAL S.A.
Creators: name: Francais-Haugrin, Odile Marcelin
name: Chauvet, Gerard
name: Francais-Haugrin, Odile Marcelin
name: Chauvet, Gerard
Publisher: name: Unknown
Year: 1996
Subjects: Crop Production/Industries
Industrial Organization

description: The Royal S.A. Company located in Groes-Mome (Martinique) produces and sells tropical fruit juices and jellies. Guava extract represents more or less 40% of the total volume produced. The company regrouped the guava grower's association in 1991 in order to secure self-sufficiency and quality of pulp. Fifty-one ha of guava were planted between 1991 and 1996. These should come into full production in die 1996 to 1997 season. The factory will be able to process 1000 t of fruit per year, enough to become self-sufficiency in pulp production. The work presented here shows the legal and technical aspects within the relationship of the producers and the Royal S.A. Company,
Superconducting Qubits Coupled to Nanoelectromechanical Resonators: An Architecture for Solid-State Quantum Information Processing
Creators: name: Geller, Michael R.
name: Cleland, Andrew N.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe the design for a scalable, solid-state quantum-information-processing architecture based on the integration of GHz-frequency nanomechanical resonators with Josephson tunnel junctions, which has the potential for demonstrating a variety of single- and multi-qubit operations critical to quantum computation. The computational qubits are eigenstates of large-area, current-biased Josephson junctions, manipulated and measured using strobed external circuitry. Two or more of these phase qubits are capacitively coupled to a high-quality-factor piezoelectric nanoelectromechanical disk resonator, which forms the backbone of our architecture, and which enables coherent coupling of the qubits. The integrated system is analogous to one or more few-level atoms (the Josephson junction qubits) in an electromagnetic cavity (the nanomechanical resonator). However, unlike existing approaches using atoms in electromagnetic cavities, here we can individually tune the level spacing of the ``atoms'' and control their ``electromagnetic'' interaction strength. We show theoretically that quantum states prepared in a Josephson junction can be passed to the nanomechanical resonator and stored there, and then can be passed back to the original junction or transferred to another with high fidelity. The resonator can also be used to produce maximally entangled Bell states between a pair of Josephson junctions. Many such junction-resonator complexes can assembled in a hub-and-spoke layout, resulting in a large-scale quantum circuit. Our proposed architecture combines desirable features of both solid-state and cavity quantum electrodynamics approaches, and could make quantum information processing possible in a scalable, solid-state environment.
description: 20 pages, 14 separate low-resolution jpeg figures
title: Kultur Campus Berlin Spandau
Creators: name: Ruiu, Sandro
Publisher: name: TU Wien
Year: 2014
Subjects: subject: architektur
subject: kulturzentrum
subject: berlin
subject: architecture
subject: cultural centre
subject: berlin

description: Ausgangspunkt für die vorliegende Diplomarbeit war der Schinkel-Wettbewerb 2014, an welchem mit dem Projektstand Januar 2014 teilgenommen wurde. Die eigentlichen Ansätze des Wettbewerbsbeitrages wurden im Zuge der anschließenden Bearbeitung im Rahmen der Diplomarbeit weiter ausgearbeitet. In der Fachsparte Architektur des Schinkel-Wettewerbs lautete die Aufgabenstellung, einen Kultur Campus in Berlin Spandau, also ein gemeinschaftliches Zentrum zu entwerfen. Mit dem folgenden Beitrag soll aufgezeigt werden, wie ein solches Zentrum mittels einzelner Phasen nach und nach entstehen und dadurch ein bestehender Ort stufenweise sanft umprogrammiert werden kann. Wie der Entwurf selbst, ist die Arbeit schrittweise aufgebaut. Zunächst erfolgt eine analytische Auseinandersetzung mit den Hauptthemen des Wettbewerbs. Wie kann bei der momentanen wirtschaftlichen Situation Berlins beziehungsweise Spandaus ein derartiges Projekt realisiert werden? Wie können die Definitionen der Begriffe Campus und Kultur in das Projekt mit einbezogen werden und auf die Entstehung Einfluss nehmen? Können aus dem zu bebauenden Areal neue Synergieeffekte für die zukünftige kulturelle Mitte Spandaus abgeleitet werden? Anschließend wird die eigentliche Realisierung des Projektes anhand seiner Projekt-Phasen genauer erläutert.
description: The Schinkel-Wettbewerb 2014 was the starting point for the following thesis, on which I participated on the end of January 2014. The approaches of the competition entry where deepened after the end of the competition. The task of the competition was about creating a Cultural-Complex in Berlin Spandau. The following contributions intend to develop the new Cultural-Complex based on several phases. An existing site will be reprogrammed in a smooth kind of way. As the draft itself, the thesis is built up gradually. It first starts with an analytical examination of the main themes of the competition. How can such a project be realized according to the current economic situation of Berlin and Spandau? How can the definitions of the terms Campus and Culture be incorporated into the project and influence the emergence? Can there be made new synergies between the existing site and the future Cultural Centre of Spandau? Afterwards the actual realisation of the project will be explained in detail by the several project phases.
title: Comparative study of the clinical manifestations and pathophysiology of leptospirosis and scrub typhus
Creators: name: Chierakul, Wirongrong
Publisher: name: The Open University
Year: 2009

description: The study aims were to determine the prevalence of leptospirosis and scrub typhus in northeast Thailand, and to compare and contrast their clinical features and outcomes. Leptospirosis and scrub typhus accounted for 45% of acute febrile illness in 1249 prospectively studied patients presenting to Udon Thani hospital , northeast Thailand between October 2000 and December 2002, nearly 20% of who has leptospirosis and scrub typhus coinfection. A total of 311 patients had leptospirosis, 97 of who were culture-positive for Leptospira spp. The culture-positive group had fewer complications, including aseptic meningitis, jaundice, renal impairment, thrombocytopenia and pulmonary haemorrhage, compared with the culture-negative group. A total of 304 patients were diagnosed as having scrub typhus, one-fourth of who had putative reinfection based on the presence of an IgG response without detectable IgM. Patients with primary scrub typhus infection were significantly younger and presented to hospital later than patients with reinfection. Primary infection was associated with jaundice, liver impairment and gastrointestinal bleeding, but fewer patients had shock and confusion compared with patients with reinfection. Patients with leptospirosis had significantly more hepatic and renal impairment, thrombocytopenia and bleeding diathesis than patients with scrub typhus. Despite this, the morality rate was comparable at around 3% for each infection, and the major cause of death for both disease was pulmonary haemorrhage. Patients with concurrent leptospirosis and scrub typhus had more severe clinical features (shock, jaundice, renal failure, thrombocytopenia and bleeding diathesis) than patients with one of these diseases alone, but mortality was comparable. A leptospirosis-scrub typhus (LEST) score based on clinical features and routine laboratory tests was developed to predict the diagnosis of leptospirosis or scrub typhus. The score specificity approached 90% for both diseases. Further validation of the LEST score is required to determine its accuracy in routine clinical practice and in other geographic areas.
CULTURES MARAICHERES SOUS ABRI DONNEES TECHNICO-ECONOMIQUES MARTINIQUE
Creators: name: Joachim, Roselyne
name: Joachim, Roselyne
Publisher: name: Unknown
Year: 1996
Subjects: Crop Production/Industries
Production Economics

description: Intensive horticultural crop production is limited in Martinique due lo rain distribution and inconvenicnces tied to low soil fertility. In order to overcome diese limitations, since 1984, growers have relied on two types of greenhouse production systems, first the Hors-Sol and then the Pleine-Tene. Through financial support provided by the Chamber of Agricultural and research conducted by CIRAD some limitations have been overcome lo the point dial in 1996 there aie 13 ha of greenhouses installed Tliis communication will attempt to answer what arc the cost and profitability associated with these production methods.
Dark matter annihilation into leptons through gravity portals
Creators: name: Xu-Dong, Sun
name: Ben-Zhong, Dai
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Dark matter (DM) constitutes 85% of the matter in the Universe. However, its specific particle property is still unclear. The fundamentals of DM particles subject to gravitational interaction, and that the lepton excess in cosmic rays may originate from DM particles, inspired us to investigate DM particle properties beyond the standard model. We assume that a leptophilic SU(2) doublet exists in nature as the mediator connecting DM with visible leptons. Since general relativity is not renormalizable at the quantum level, it should be regarded as an effective field theory's leading order term. One species of the next-to-leading-order term should be operators linear to the Ricci scalar and containing scalar fields, such as the Higgs field, scalar DM, or the newly introduced SU(2) scalar doublet. These operators can cause DM annihilation through gravity portals. We analyzed constraints from the cosmic antiproton flux, DM relic abundance, cosmic positron flux, cosmic microwave background, and direct detection experiments. The result shows that there is a vast parameter space that is compatible with current experiments. DM with a mass of electroweak scale is only allowed to annihilate into leptons. We further show that the purely gravitational DM better explains the DArk Matter Particle Explorer cosmic lepton excess. Our work provides a promising mechanism for DM particles to connect with standard model particles.
Large Quantum imaging of nonlocal spatial correlations induced by orbital angular momentum
Creators: name: Altman, Adam R.
name: Köprülü, Kahraman G.
name: Corndorf, Eric
name: Kumar, Prem
name: Barbosa, Geraldo A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Through scanned coincidence counting, we probe the quantum image produced by parametric down conversion with a pump beam carrying orbital angular momentum. Nonlocal spatial correlations are manifested through splitting of the coincidence spot into two.
description: 4 pages, 6 figures. Submitted to Physical Review Letters
Preparation of AC/KOH and AC/Fe3O4/ZnO nanocomposite from waste rice straw for the removal of cyclophosphamide from aqueous solutions
Creators: name: Haghgoo, Ali Asghar
name: Cheraghi, Mehrdad
name: Sobhanardakani, Soheil
name: Lorestani, Bahareh
name: Izadkhah, Vida
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plasma Physics

description: In this study, rice straw was used for synthesizing AC/KOH and AC/Fe3O4/ZnO as fresh adsorbents for the elimination of Cyclophosphamide (CP) from water samples. In so doing, the crystalline form, the chemical compound and the morphology of the adsorbents were characterized utilizing scanning electron microscopy (SEM), X-ray diffraction (XRD) spectrometry, Fourier transform infrared spectroscopy (FTIR), vibrating sample magnetometry (VSM), pHpzc, and Brunauer, Emmett, and Teller (BET) methods. Then, the optimum conditions for removal efficiency of CP onto AC/Fe3O4/ZnO nanocomposite were obtained at CP concentration of 20 mg L−1, AC/Fe3O4/ZnO nanocomposite dose of 0.01 g, solution pH of 7, equilibrium time of 45 min, and temperature of 25 °C. The CP adsorption data was modeled by isotherm models (Langmuir, Freundlich, and Temkin) and kinetic models (pseudo-first-order, pseudo-second-order, and intraparticle diffusion) using the origin nonlinear software version 6.1. Based on the results obtained, the maximum adsorption capacities of CP on AC/KOH and AC/Fe3O4/ZnO were 185.6 and 224.3 mg g−1, respectively. In addition, the results of the desorption tests showed that AC/KOH and AC/Fe3O4/ZnO were comfortably regenerated using methanol and sodium hydroxide.
DEVELOPPEMENT DES PETITS PLANTEURS D'ANANAS EN MARTINIQUE
Creators: name: Moutoussamy, Gilles
name: Marie-Alphonsine, Paul
name: Marie, Frank
name: Moutoussamy, Gilles
name: Marie-Alphonsine, Paul
name: Marie, Frank
Publisher: name: Unknown
Year: 1996
Subjects: Farm Management
Teaching/Communication/Extension/Profession

description: A specific project for the training and technical assistance of small pineapple farmers has been completed by CIRAD-FHLOR since 1981. This effort catalyzed significant improvements regarding intensification and organization (creation of an association: ASP A) and resulted in a regular increase in productivity. About 50 growers, who together manage more tlian 100 hectares of land, produce about 20% of the total volume of pineapple on the island. Since 1991, SUAD (a government agricultural development service) and CIRAD-FHLOR/ASP A have collaborated to continue assisting those farmers. Regular form visits and meetings on predefined subjects provide efficient technical assistance. Moreover, an economic suive)' of those farms was done, especially by studying a panel of reference plots. Besides tlte collection of numerous data, this situation helps fanners create cITcctivc personal development programs.
WILL SMALL YAM FARMERS IN JAMAICA ADOPT THE MINISETT TECHNOLOGY?
Creators: name: Williamson, Veronica
name: Reyes-Pacheco, Armando
name: Williamson, Veronica
name: Reyes-Pacheco, Armando
Publisher: name: Unknown
Year: 1996
Subjects: Farm Management
Livestock Production/Industries
Teaching/Communication/Extension/Profession

description: To alter the production and productivity structure at die farm level entails technological innovations for achieving a more efficient use of natural, human, and economic resources. Beyond the complexity of devising technology in itself, it impels recasting the fanning systems to emphasize a more commercially-oriented system than subsistence traditional produclion. This transformation demands dial agricultural technology adoption and sustainability among small farmers be examined within the context of their perception. It must surpass die generation and exposure processes of technological alterations to farmers if it is to be cost-effective and provide elements of sustainability. If agricultural research and technology transfer is to promote suitable agricultural technology, generate sustainable fanning techniques and methods, foster technology flows, and generally strengthen income levels, it merits to incorporate die social and economic milieu and often overlooked; farmers' attitudes.
USING THE FREEZE-DRY TECHNIQUE TO ENHANCE PRESERVATION OF INSECT LARVAE
Creators: name: Headings, M. E.
name: Headings, M. E.
Publisher: name: Unknown
Year: 1996
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Some important reasons for collecting and preserving insect larvae are: (1) for teaching and research purposes, (2) for use as reference collections (of economically important species) in insect control work, (3) for museum collections, which document insect fauna of specific regions, and (4) for aesthetic purposes, including their sale by business enterprises. Insect larvae are generally preserved in vials using one of several different liquid chemical preparations. Consequently, they often lose much of their natural appearance after being in a liquid preservative for some time. The freeze-dry technique dries and preserves insect larvae through the sublimation of body water at -20° to -30°C while in a vacuum. The freezedryer unit used was a new benchtop 115v Yamato DC41 model. The 115v vacuum pump (model B-2) was built by Marva Scientific Manufacturing Company. This investigation illustrates specific examples of insect larvae that have been successfully preserved using the freeze-dry technique and the specific procedures used. The advantage of this technique is that there is very little body color loss or structural distortion as a result of preservation. It also provides for ease of handling and inspection of specimens.
Herausforderungen bei der schulischen Integration von Lernenden mit Autismus-Spektrum-Störungen Eine Befragung von Schulischen Heilpädagoginnen und Heilpädagogen
Creators: name: Räber, Andrea
Publisher: name: Zenodo
Year: 2017
Subjects: Sonderpädagogik
Autismus
Integrative Schule
Masterarbeit

description: Die vorliegende Arbeit befasst sich mit Herausforderungen, welchen Schulische Heilpädagoginnen und Heilpädagogen in ihrem Arbeitsalltag begegnen, wenn sie Lernende mit Autismus-Spektrum-Störungen in integrativen Schulsettings begleiten. Der Untersuchung liegt ein qualitatives Forschungsdesign zugrunde. Durch Leitfadeninterviews erhobene Daten werden mittels qualitativer Inhaltsanalyse kategorisiert und ausgewertet. Dabei werden die Dimensionen „Soziale Interaktion und Kommunikation“, „Lehren und Lernen“, „Rahmenbedingungen“ und „Kooperation und Zusammenarbeit“ unterschieden. Die befragten Personen beschreiben und gewichten Herausforderungen unterschiedlich, wobei jene der Kooperation besonders betont werden. Herausforderungen, welche gut beeinflussbar sind (wie beispielsweise individuelle Anpassungen im Unterricht), werden grundsätzlich als etwas weniger belastend beschrieben als solche, deren Veränderungen komplexer sind.
Human health risk and hydro-geochemical appraisal of groundwater in the southwest part of Bangladesh using GIS, water quality indices, and multivariate statistical approaches
Creators: name: Chakraborty, Tapos Kumar
name: Islam, Md. Shahnul
name: Ghosh, Gopal Chandra
name: Ghosh, Prianka
name: Zaman, Samina
name: Habib, Ahsan
name: Hossain, Md. Ripon
name: Bosu, Himel
name: Islam, Md. Rashidul
name: Al Imran, Mostafa
name: Khan, Abu Shamim
name: Josy, Md. Shahariea Karim
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: This study investigated the groundwater chemistry, suitability, and potential human health risk in the southwest part of Bangladesh. Groundwater samples were collected from the shallow aquifer throughout the study area. A set of different hydro-chemical analyses, water quality indices, multivariate statistics, and geo-statistical models were applied to achieve the study objectives. Study results show the concentration of NH3-N, HCO3−, Ca2+, As, Fe, and Mn exceeded Bangladesh drinking water standards in 94%, 100%, 100%, 73%, 97%, and 91% of samples, respectively. Groundwater quality indices indicate that about 94% of samples are suitable for irrigation, and about 82% are unsuitable for drinking. In the study area, groundwater is mainly Ca2+-Mg2-HCO3− types, and rock-water interactions dominate the mineralization process. Ca2+  > Mg2+  > Na+  > K+, and HCO3−  > Cl−  > SO42− are the sequential orders of major cation and major anion, respectively. Multivariate analyses show the geogenic origin is predominant over anthropogenic sources. Semivariogram models show moderate to weak spatial dependence. The non-carcinogenic and carcinogenic health risks via oral exposure pathways for adults and children are in the high (97%) and very high (100%) categories, respectively.
Il vichismo economico (Vico, Galiani, Croce-Economia, liberalismo economico) (Economic Vichism (Vico, Galiani, Croce – economics, economic liberalism))
Creators: name: TAGLIACOZZO, G.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Giambattista Vico, poetic economy, socio-economic problems, social evolution, economic theory, the history of economics
subject: B11, B31

description: As every reader of Giambattista Vico’s New Science knows, the book contains a section on “poetic economy” - the economy of the “age of heroes”. This was the first study of such a topic ever conceived. Vico also dealt with some socio-economic problems of later stages of social evolution. In none of his works, however, did he pay specific attention to problems of economics stricto sensu. The present work provides a study of the set of direct and indirect inferences that can be drawn from the principles of the New Science in the economic field - what we might call “Economic Vichism” - and the relationship or analogy, if any, of “Economic Vichism” to later economic theories or viewpoints, and its place in the history of economics. JEL: B11, B31
description: Moneta e Credito, V. 21, N. 83 (1968)
L'abolizione dei tassi minimi ufficiali sui prestiti bancari in Francia. (The abolition of official minimum loan rates in French banking)
Creators: name: ALHADEFF, D.A.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: French banking system, minimum loan rate, policy, reform, competition
subject: G21, G28

description: In 1965 the French authorities introduced the first of a series of reforms to the structure and operations of the French banking system, one of which was the abolition of the official minimum loan rate on discounts and advances. The elimination of the floor rate on bank loans has been widely acclaimed as a major move towards greater competition in French banking. The present paper evaluates the probable market impact of this reform. To this end, both the market structure and market behaviour of French short-term business loan markets are examined. The author first analyses the market structure of loan markets in France both before and after two recent major reforms of the banking structure. Market behavior under the minimum loan rate is then examined and the relation of minimum loan rates to actual loan rates, to competitive loan rates, and tot he rates that probably would have prevailed if there had been no official loan rate controls is shown. JEL: G21, G28
description: Moneta e Credito, V. 21, N. 83 (1968)
Exploring the potent inhibitor β-stigmasterol from Pittosporum dasycaulon Miq. leaves against snake venom phospholipase A2 protein through in vitro and molecular dynamics behavior approach
Creators: name: Thodi, Riyas Chakkinga
name: Ibrahim, Junaida M.
name: Nair, Achuthsankar S.
name: Sukumaran, Swapna Thacheril
Publisher: name: Taylor & Francis
Year: 2022
Subjects: Biophysics
Biochemistry
Physical Sciences not elsewhere classified
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified

description: β-Stigmasterol, responsible for antivenom activity against abundant PLA2 protein of Viper (Daboia russelii) and Cobra (Naja naja) venom, was identified, characterized, and isolated from Pittosporum dasycaulon leaves extract. The compound purity was checked by RP-HPLC analysis, and structure was elucidated by FTIR and NMR analysis, followed by in-vitro as well as in-silico studies. The structural stability of the docked complexes was evaluated by molecular dynamic simulation, and the binding free energies were calculated by MM-PBSA analysis. The in-vitro analysis revealed that the isolated compound β-SS is effective against D. russelii PLA2 (IC50 40.903 ± 0.479 μg/mL) than N. naja venom PLA2 (42.340 ± 0.11 μg/mL). The in-silico approaches helps to conclude that the β-SS-PLA2 D. russelii complex showed a stable conformation with a reduced degree of flexibility throughout the dynamics simulation time period with high-affinity docking energy −10.60 kcal/mol than β-SS-PLA2 N. naja complex, which observed docking energy of −10.39 kcal/mol.
La prima parte del "decennio di sviluppo": sviluppo, commercio e bilancia dei pagamenti dei paesi arretrati (The first half of the development decade: growth, trade and the balance of payments of the developing countries, 1960-65)
Creators: name: BALASSA, B.
Publisher: name: Moneta e Credito
Year: 2014
Subjects: subject: Development, growth, performance, less developed countries, exports, foreign capital, exchange
subject: F31, F34, O11, O40

description: The developing countries approached the Development Decade - the period 1960-1970 - with great expectations. While export prospects were viewed with some pessimism, a considerable increase in the rate of economic growth was forecast. The present work uses data from the first half of the sixties in order to evaluate the extent to which these projections have been realised. The author considers the growth performance of the developing countries, increases in their exports and in the inflow of foreign capital, the use of foreign exchange earnings, the main influences affecting their economic growth, and the prospers for the second half of the Development Decade. JEL: F31, F34, O11, O40
description: Moneta e Credito, V. 21, N. 83 (1968)
title: I'm a student, in a wheelchair : The experiences of disabled pupils attending resourced provision in a mainstream secondary school
Creators: name: Keegan, Gay
Publisher: name: The Open University
Year: 2010

description: Seeking pupils' views became an issue of national importance following legislation (Section 29A of the Education Act 2002, CRAE, 2008) and lack of such consultation in the United Kingdom has been repeatedly raised by the UN Committee on the Rights of the Child (1995,2002 and 2008). The importance of seeking the views of all children about their experience is particularly salient since there is a legacy of exclusion and disadvantage for disabled children in mainstream school settings and provision historically has been planned and developed for them, without consulting with or involving them directly.

This study investigates the views and experiences of ten disabled pupils who attended a resourced provision attached to a mainstream secondary school. It used semi-structured interviews within a social constructivist paradigm carried out with disabled teenagers by a disabled researcher. The transcriptions of the interviews were analysed thematically with the categories for the analysis developed by grounded theory. Detailed consideration was given to the ethical issues raised by research which focuses on the need to promote the engagement of the children and ensure their voice is heard and these issues were addressed in the context of the present study.

The evidence from this study indicates that the pupils welcomed the opportunity to talk to a disabled researcher and were willing to explore their experience of being a disabled pupil in the school. They reported issues around transition to the secondary school with the resourced provision, feeling `forced away' from their local community and from friendships established in their primary schools. They commented on bullying in the school and feelings of being perceived as `different', as lesser human beings. Most of the children did not take on board the descriptor of `disabled' for themselves, talking instead about their impairments, which they did not see as important to their sense of identity or self.

The conclusions reached stressed the need for teachers and policy makers to listen and respond to pupils' voice, taking into account individual needs, and engaging in joint problem solving with pupils at both an individual and systemic level. They need to be reflexive in their practice to avoid discrimination and support all children's rights and there should be increased awareness of the affirmative model of disability - we are valued for who we are, our disability is part of this and so our predicament and how we manage it should be accepted and valued as well.