cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Co-Occurrence of Aflatoxin and Fumonisin Along the Maize Value Chain in Southwest Nigeria
Creators: name: Liverpool-Tasie, Lenis
name: Saha Turna, Nikita
name: Ademola, Oluwatoyin
name: Obadina, Adewale
name: Wu, Felicia
name: Liverpool-Tasie, Lenis
name: Saha Turna, Nikita
name: Ademola, Oluwatoyin
name: Obadina, Adewale
name: Wu, Felicia
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: International Development
subject: Household income and livelihood
subject: Nigeria
subject: Nutrition
subject: Value chain analysis

description: KEY-FINDINGS : People in Nigeria are at risk of exposure to mycotoxins (aflatoxins and fumonisins) which both have potential risk to human and animal health We find evidence that many maize products (51.7% of our samples) had total aflatoxin levels above the regulatory limits in Nigeria while 12.93% of the samples contained total fumonisin levels higher than the United States regulatory limit Aflatoxin and fumonisin contamination in maize products extend beyond production to storage and final food products Adequately addressing the mycotoxin challenge requires consideration of the entire maize value chain
The Distance to NGC 5904 (M 5) via the Subdwarfs Main Sequence Fitting Method
Creators: name: Testa, Vincenzo
name: Chieffi, Alessandro
name: Limongi, Marco
name: Andreuzzi, Gloria
name: Marconi, Gianni
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a determination of the distance modulus of the globular cluster NGC 5904 (M 5), obtained by means of the subdwarf main-sequence fitting on the (V,V-I) color-magnitude diagram. The subdwarf sample has been selected from the HIPPARCOS catalog in a metallicity range homogeneous with the cluster ([Fe/H] \~= -1.1). Both the cluster and the subdwarfs have been observed with the same telescope+instrument+filters setup (namely, ESO-NTT equipped with the SUSI2 camera), in order to preserve homogeneity and reduce systematic uncertainties. A set of archival HST data has then been used to obtain a deep and precise ridge line. These have been accurately calibrated in the ground photometric system by using the NTT data and used to fit the cluster distance modulus. By adopting the most commonly accepted values for the reddening, E(B-V) = 0.035 and 0.03, we obtain respectively mu_0 = 14.44 +- 0.09 +- 0.07 and mu_0 = 14.41 +- 0.09 +- 0.07, in agreement with recent determinations.
description: 11 pages, 14 figures, accepted for publication in Astronomy and Astrophysics
Spatially resolved signature of quenching in star-forming galaxies
Creators: name: Quai, Salvatore
name: Pozzetti, Lucia
name: Moresco, Michele
name: Citro, Annalisa
name: Cimatti, Andrea
name: Brinchmann, Jarle
name: Gunawardhana, Madusha L. P.
name: Paalvast, Mieke
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Understanding when, how and where star formation ceased (quenching) within galaxies is still a critical subject in galaxy evolution studies. Taking advantage of the new methodology developed by Quai et al. (2018) to select recently quenched galaxies, we explored the spatial information provided by IFU data to get critical insights on this process. In particular, we analyse 10 SDSS-IV MaNGA galaxies that show regions with low [O III]/Hα compatible with a recent quenching of the star formation. We compare the properties of these 10 galaxies with those of a control sample of 8 MaNGA galaxies with ongoing star formation in the same stellar mass, redshift and gas-phase metallicity range. The quenching regions found are located between 0.5 and 1.1 effective radii from the centre. This result is supported by the analysis of the average radial profile of the ionisation parameter, which reaches a minimum at the same radii, while the one of the star-forming sample shows an almost flat trend. These quenching regions occupy a total area between 15\% and 45\% of our galaxies. Moreover, the average radial profile of the star formation rate surface density of our sample is lower and flatter than that of the control sample, at any radii, suggesting a systematic suppression of the star formation in the inner part of our galaxies. Finally, the radial profile of gas-phase metallicity of the two samples have a similar slope and normalisation. Our results cannot be ascribed to a difference in the intrinsic properties of the analysed galaxies, suggesting a quenching scenario more complicated than a simple inside-out quenching.
description: 19 pages + 5 on-line material, 22 figures, accepted for publication in MNRAS
The Quality of Agriculture and Food Security Policy Processes at National Level in Malawi. Results from the 2017/18 Malawi Agriculture and Food Security Policy Processes Endline Survey
Creators: name: Benson, Todd
name: Nyirenda, Zephania
name: Nankhuni, Flora
name: Maredia, Mywish
name: Benson, Todd
name: Nyirenda, Zephania
name: Nankhuni, Flora
name: Maredia, Mywish
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: International Development
subject: Malawi
subject: Policy research
subject: Policy process analysis

description: KEY FINDINGS AND RECOMMENDATIONS A survey of 55 participants in national-level policy processes around agriculture and food security in Malawi was implemented in 2015 (baseline) and in 2017/18 (endline) to examine the quality of these processes and the institutions involved. The 2015 baseline survey analysis showed that assessments of the quality of these processes were positive, even if improvements were still needed. However, contrary to expectations, the endline survey of 2017/18 showed increased pessimism among respondents as to the quality of the processes and the institutions involved in them. This result was unexpected, as policy developments around agriculture and food security between 2015 and 2017/18 were positive—several important agricultural policy achievements had been realized. However, Malawi also experienced recurrent widespread food insecurity crises over this period. Consequently, there is a disconnect between the reasonably high quality of the policies and strategies developed through these processes and the results obtained. Respondents to the endline survey were more skeptical than anticipated of the quality of these policy processes. Better quality policy processes are not sufficient for achieving better outcomes in Malawi’s agricultural sector and food security for Malawi’s citizens. Effective implementation of the policies developed through these processes is the most important proof of their quality and value. Policy implementation remains inadequate and a continuing challenge.
Poly(butylene disulfide) and poly(butylene tetrasulfide): Synthesis, cure and investigation of polymerization yield and effect of sulfur content on mechanical and thermophysical properties
Creators: name: Sheydaei, Milad
name: Edraki, Milad
name: Javanbakht, Shiva
name: Alinia-Ahandani, Ebrahim
name: Mahdieh Soleimani
name: Alireza Zerafatkhah
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: In this work, two polysulfide polymers were synthesized by use of 1,4-dichlorobutane and aqueous sodium disulfide or sodium tetrasulfide. The polymers were cured at 85 °C. The structural characteristics of non-cured and cured samples were identified by Raman and FT-IR spectroscopy. The morphological and the thermophysical properties of all samples were investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Also, the mechanical properties and hardness of all samples were investigated by tensile test and Shore A. Moreover, the effects of temperature and ethanol on polymerization were investigated. Aqueous monomers were characterized by UV-VIS-NIR spectroscopy. The molecular weight of the synthesized samples was determined by 1H NMR spectroscopy. The results showed that, before curing, poly(butylene tetrasulfide) (PBTS) due to amorphous structure does not have a melting peak and both polymers have a very low glass transition temperature. Without ethanol, no polymerization reaction takes place. Before curing, poly(butylene disulfide) (PBDS) is brittle and PBTS has an elastomeric behavior, but after curing PBDS also behaves as elastomer. The curing times of the two polymers are close to each other, but their mechanical properties and hardness are different.
Limit groups and groups acting freely on R^n-trees
Creators: name: Guirardel, Vincent
Publisher: name: arXiv
Year: 2003
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 20E08, 20E26

description: We give a simple proof of the finite presentation of Sela's limit groups by using free actions on R^n-trees. We first prove that Sela's limit groups do have a free action on an R^n-tree. We then prove that a finitely generated group having a free action on an R^n-tree can be obtained from free abelian groups and surface groups by a finite sequence of free products and amalgamations over cyclic groups. As a corollary, such a group is finitely presented, has a finite classifying space, its abelian subgroups are finitely generated and contains only finitely many conjugacy classes of non-cyclic maximal abelian subgroups.
description: Published by Geometry and Topology at http://www.maths.warwick.ac.uk/gt/GTVol8/paper39.abs.html
Bio-inspired Band Gap Engineering of Zinc Oxide by Intracrystalline Incorporation of Amino Acids
Creators: name: Brif, Anastasia
name: Ankonina, Guy
name: Drathen, Christina
name: Pokroy, Boaz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: During a bioInspired crystallization process, incorporation of amino acids into the crystal structure of ZnO induces lattice strain that leads to linear bandgap shifts.
Cluster Difference Imaging Photometric Survey. I. Light Curves of Stars in Open Clusters from TESS Sectors 6 & 7
Creators: name: Bouma, L. G.
name: Hartman, J. D.
name: Bhatti, W.
name: Winn, J. N.
name: Bakos, G. Á.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Transiting Exoplanet Survey Satellite (TESS) is providing precise time-series photometry for most star clusters in the solar neighborhood. Using the TESS images, we have begun a Cluster Difference Imaging Photometric Survey (CDIPS), in which we are focusing both on stars that are candidate cluster members, and on stars that show indications of youth. Our aims are to discover giant transiting planets with known ages, and to provide light curves suitable for studies in stellar astrophysics. For this work, we made 159,343 light curves of candidate young stars, across 596 distinct clusters. Each light curve represents between 20 and 25 days of observations of a star brighter than $G_{\rm Rp}=16$, with 30-minute sampling. We describe the image subtraction and time-series analysis techniques we used to create the light curves, which have noise properties that agree with theoretical expectations. We also comment on the possible utility of the light curve sample for studies of stellar rotation evolution, and binary eccentricity damping. The light curves, which cover about one sixth of the galactic plane, are available as a MAST High Level Science Product at https://doi.org/10.17909/t9-ayd0-k727 .
description: ApJS accepted. Comments welcome!
New spirothiazolidinone derivatives: Synthesis and antiviral evaluation
Creators: name: Çağla Begüm Apaydın
name: Van Loy, Benjamin
name: Stevaert, Annelies
name: Naesens, Lieve
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: A new series of N-(3-oxo-1-thia-4-azaspiro[4.5]decan-4-yl)carboxamide derivatives were designed, synthesized, and evaluated for their antiviral activity. These new spirothiazolidinone compounds (3a–f, 4a–f) were prepared by a cyclocondensation reaction of hydrazides (1, 2) and appropriate ketones with 2-sulfanylpropionic acid. All compounds were characterized by IR, 1H NMR, and elemental analysis. N-(8-Ethyl-2-methyl-3-oxo-1-thia-4-azaspiro[4.5]decan-4-yl)-4-methylbenzamide (3c) and 4-methyl-N-(2-methyl-3-oxo-8-propyl-1-thia-4-azaspiro[4.5]decan-4-yl)benzamide (3d) exhibited strong activity against influenza A/H3N2 virus, at EC50 values of 0.5 and 0.2 µM and a selectivity index of about 50. Besides, 4-methyl-N-(2-methyl-3-oxo-8-phenyl-1-thia-4-azaspiro[4.5]decan-4-yl)benzamide (3e) and 2-(4-chlorophenoxy)-N-(3-oxo-8-tert-butyl-1-thia-4-azaspiro[4.5]dec-4-yl)acetamide (4f) inhibited human coronavirus 229E, at EC50 values of 9.8 and 8.6 µM, and a favorable selectivity index for 4f. This indicates the versatility of the spirothiazolidinone scaffold to achieve new classes of antiviral molecules.
Synchronization of Random Linear Maps
Creators: name: Lipowski, Adam
name: Bena, Ioana
name: Droz, Michel
name: Ferreira, Antonio L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study synchronization of random one-dimensional linear maps for which the Lyapunov exponent can be calculated exactly. Certain aspects of the dynamics of these maps are explained using their relation with a random walk. We confirm that the Lyapunov exponent changes sign at the complete synchronization transition. We also consider partial synchronization of nonidentical systems. It turns out that the way partial synchronization manifests depends on the type of differences (in Lyapunov exponent or in contraction points) between the systems. The crossover from partial synchronization to complete synchronization is also examined.
description: 5 pages, 6 figures
Additional file 2 of Salvage therapy for progressive, treatment-refractory or recurrent pediatric medulloblastoma: a systematic review protocol
Creators: name: Adile, Ashley
name: Kameda-Smith, Michelle
name: Bakhshinyan, David
name: Banfield, Laura
name: Salim, Sabra
name: Farrokhyar, Forough
name: Fleming, Adam
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2. Search strategy for Ovid MEDLINE.
Easy and environmentally friendly synthesis method for T8H (HSiO3/2)8
Creators: name: Tsukada, Satoru
name: Ogawa, Takuya
name: Susami, Yuma
name: Yamamoto, Kazuki
name: Gunji, Takahiro
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Biotechnology
subject: Ecology
subject: Plant Biology

description: Environmentally friendly methods for the synthesis of T8H were developed. A combination of triethoxysilane (TES), concentrated HCl aqueous solution, and FeCl3 produced T8H with almost the same yield as the previously known methods. We also found that HNO3 could be used instead of HCl, resulting in a similar yield. No toxic gases were generated during the reaction with HNO3. Additionally, the synthesis of T8H based on TES did not generate dangerous substances such as hydrogen chloride and methanol, unlike when trichlorosilane or trimethoxysilane are used. Therefore, our new method for the synthesis of T8H is considered to be safer, although the yield is the same as the conventional methods.
Tabelliphora Kung & Brown 2005, new genus
Creators: name: Kung, Giar-Ann
name: Brown, Brian V.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Phoridae
Tabelliphora

description: Tabelliphora new genus
 Diagnosis. Body extremely flat, limuloid. Frons broad, flat, without median furrow. One pair of inner and one pair of outer vertical setae, and one pair of reclinate supra­antennal setae present. Other frontal setae absent. Eye reduced; ocelli present. Flagellomere 1 oval; arista near­apical. Palpus normal, but other mouthparts extremely small. Thorax extremely flattened, shieldlike; anterior spiracle not seen. Legs relatively short, without isolated large setae; mid­ and hind tibiae each with one dorsal setal palisade. Wing (Fig. 5) reduced, short, with longitudinal veins only faintly indicated (visible only with phase contrast lighting). Abdominal tergites well developed; segment 7 with small dorsal sclerite; apex of abdomen forming a sclerotized, piercing stylet.
 Tabelliphora keys to couplet 161 in Disney’s 1994 key to the genera of females. However, the thickened costa and sinuous Rs vein of the wing differentiate Tabelliphora from Platydipteron. In Platydipteron, the costa is not thickened and vein Rs is straight. Tabelliphora differs from Melittophora by the setation of the scutellum; Melittophora has 10 setae on the posterior margin, while Tabelliphora has only 4.
 In general appearance, Tabelliphora is similar to the Afrotropical genus Euryphora Schmitz, which is also a small, limuloid phorid with reduced wings and only the supraantennal setae present on the frons. In Euryphora, however, the body is less flattened, the eyes are less reduced, the mid­ and hind legs have large isolated setae, and the wing is less reduced.
 In the New World fauna, the most similar genera are Colyeria Borgmeier & Prado, Cootiphora Brown, and Platydipteron Borgmeier & Prado, all of which are also limuloid and have a parasitic ovipositor. The frontal setation of Tabelliphora, consisting of only the single pair of reclinate supra­antennal setae, serves to distinguish it from all of these others, however.
description: Published as part of Kung, Giar-Ann & Brown, Brian V., 2005, Three unusually divergent new genera of phorid flies (Diptera: Phoridae) from Costa Rica, pp. 43-52 in Zootaxa 1019 (1) on page 49, DOI: 10.11646/zootaxa.1019.1.3, http://zenodo.org/record/5049460
Fusion of labeled RFS densities with minimum information loss
Creators: name: Gao, Lin
name: Battistelli, Giorgio
name: Chisci, Luigi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper addresses fusion of labeled random finite set (LRFS) densities according to the criterion of minimum information loss (MIL). The MIL criterion amounts to minimizing the (weighted) sum of Kullback-Leibler divergences (KLDs) with the fused density appearing as righthand argument of the KLDs. In order to ensure the fused density to be consistent with the local ones when LRFS densities are marginal $δ$-generalized labeled multi-Bernoulli (M$δ$-GLMB) or labeled multi-Bernoulli (LMB) densities, the MIL rule is further elaborated by imposing the constraint that the fused density be in the same family of local ones. In order to deal with different fields-of-view (FoVs) of the local densities, the global label space is divided into disjoint subspaces which represent the exclusive FoVs and the common FoV of the agents, and each local density is decomposed into the sub-densities defined in the corresponding subspaces. Then fusion is performed subspace-by-subspace to combine local subdensities into global ones, and the global density is obtained by multiplying the global sub-densities. Further, in order to tackle the label mismatching issue arising in practical applications, a rank assignment optimization (RAO) of a suitably defined cost is carried out so as to match labels from different agents. Moreover, issues concerning implementation of the MIL rule and its application to distributed multitarget tracking (DMT) are discussed. Finally, the performance of the proposed fusion approach is assessed via simulation experiments considering DMT with either the same or different FoVs of the agents.
Additional file 1 of Salvage therapy for progressive, treatment-refractory or recurrent pediatric medulloblastoma: a systematic review protocol
Creators: name: Adile, Ashley
name: Kameda-Smith, Michelle
name: Bakhshinyan, David
name: Banfield, Laura
name: Salim, Sabra
name: Farrokhyar, Forough
name: Fleming, Adam
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. PRISMA-P 2015 Checklist.
Association Between Gold Grain Orientation And Its Periodic Steps Formed At The Gold/Substrate Interface
Creators: name: Chen, Linfeng
name: Khristosov, Maria Koifman
name: Saguy, Cecile
name: Katsman, Alex
name: Pokroy, Boaz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nanoscale step structures have attracted recent interest owing to their importance in both fundamental and applied research, for example in adsorption, in catalysis, and in directing nanowire growth. Here, we used a template-stripping method to obtain vicinal-like surface structures on grains of polycrystalline gold and investigated the effect of annealing temperature on the formation of these surfaces.
Modelling Weak-Coherent CV-QKD Systems Using a Classical Simulation Framework
Creators: name: Kreinberg, Sören
name: Koltchanov, Igor
name: Novik, Piotr
name: Alreesh, Saleem
name: Laudenbach, Fabian
name: Pacher, Christoph
name: Hübel, Hannes
name: Richter, André
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Due to their compatibility to existing telecom technology, continuous variable (CV) weak coherent state protocols are promising candidates for a broad deployment of quantum key distribution (QKD) technology. We demonstrate how an existing simulation framework for modelling classical optical systems can be utilized for simulations of weak-coherent CV-QKD links. The quantum uncertainties for the measured characteristics of coherent signals are modelled in the electrical domain by shot noise, while a coherent signal in the optical domain is described by its quadrature components. We simulate various degradation effects such as attenuation, laser RIN, Raman noise (from classical channels in the same fibre), and device imperfections and compare the outcome with analytical theory. Having complemented the physical simulation layer by the post-processing layer (reconciliation and privacy amplification), we are able to estimate secure key rates from simulations, greatly boosting the development speed of practical CV-QKD schemes and implementations.
Editoriale
Creators: name: Salerno, Daniele
Publisher: name: figshare
Year: 2022
Subjects: subject: History
subject: 130308 Gender, Sexuality and Education
subject: FOS: Educational sciences
subject: Gender studies
subject: 220306 Feminist Theory
subject: FOS: Philosophy, ethics and religion
subject: Philosophy
subject: 220317 Poststructuralism

description: Editorial for the number 51 of the Italian journal "Bibliomanie. Letterature, storiografie, semiotiche". The number includes a special section on "Omosessualità tra forme di educazione e sistemi legislativi"/Homosexuality between forms of education and legislative systems
Quantum criticality of loops with topologically constrained dynamics
Creators: name: Dai, Zhehao
name: Nahum, Adam
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Quantum fluctuating loops in 2+1 dimensions give gapless many-body states that are beyond current field theory techniques. Microscopically, these loops can be domain walls between up and down spins, or chains of flipped spins similar to those in the toric code. The key feature of their dynamics is that the reconnection of a pair of strands is forbidden. This happens at previously-studied multi-critical points between topologically nontrivial phases. We show that this topologically constrained dynamics leads to universality classes with unusual scaling properties. For example, scaling operators at these fixed points are classified by topology, and not only by symmetry. We introduce the concept of the topological operator classification, provide universal scaling forms for correlation functions, and analytical and numerical results for critical exponents. We use an exact correspondence between the imaginary-time dynamics of the 2+1D quantum models and a classical Markovian dynamics for 2D classical loop models with a nonlocal Boltzmann weight (for which we also provide scaling results). We comment on open questions and generalizations of the models discussed for both quantum criticality and classical Markov processes.
description: 28 + 12 pages, 21 + 5 figures
Spinning eggs--which end will rise?
Creators: name: Sasaki, Ken
Publisher: name: arXiv
Year: 2003
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We examine the spinning behavior of egg-shaped axisymmetric bodies whose cross sections are described by several oval curves similar to real eggs with thin and fat ends. We use the gyroscopic balance condition of Moffatt and Shimomura and analyze the slip velocity of the bodies at the point of contact as a function of $θ$, the angle between the axis of symmetry and the vertical axis, and find the existence of the critical angle $θ_c$. When the bodies are spun with an initial angle $θ_{\rm initial}>θ_c$, $θ$ will increase to $π$, implying that the body will spin at the thin end. Alternatively, if $θ_{\rm initial}
description: 14 pages, 14 figures, to be published in American Journal of Physics
Cryogenic avalanche detectors based on gas electron multipliers
Creators: name: Bondar, A.
name: Buzulutskov, A.
name: Shekhtman, L.
name: Snopkov, R.
name: Tikhonov, Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We study the performances of gaseous and two-phase (liquid-gas) cryogenic detectors of ionizing radiation based on gas electron multipliers (GEMs) and operated in an avalanche mode in pure noble gases. The gas amplification in He, Ar and Kr is systematically studied at low temperatures, using triple-GEM multipliers. High gains, exceeding 10^4, were obtained in these gases in the range of 120-300 K. Stable electron avalanching was demonstrated in a saturated Kr vapor in the two-phase mode. These results are relevant for understanding basic mechanisms of electron avalanching at low temperatures and for applications in cryogenic particle detectors, in particular in dark matter and solar neutrino detectors.
description: 14 pages, 14 figures. Accepted for publication in Nucl. Instr. and Meth. A
WEB (water extract of banana): An efficient natural base for one-pot multi-component synthesis of 2-amino-3,5-dicarbonitrile-6-thio-pyridines
Creators: name: Alireza Allahi
name: Batool Akhlaghinia
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Inorganic Chemistry
subject: Plant Biology
subject: FOS: Biological sciences

description: One-pot multi-component synthesis of 2-amino-3,5-dicarbonitrile-6-thio-pyridines derivatives using WEB (water extract of banana peels ash) as a green catalyst is described. A variety of aromatic aldehydes (with electron-donating and electron-withdrawing groups) in conjunction with aromatic and aliphatic thiols are known to tolerate this reaction condition using WEB. The reaction has simple work up procedure without using toxic solvents.
title: The radio spectrum requirements of broadband power line telecommunications systems.
Creators: name: Brannon, Raymond James
Publisher: name: The Open University
Year: 2007

description: There is concern among short wave (HF) radio users that broadband Power Line telecommunications (PLT) systems could cause serious interference to their services. The purpose of my research was to identify the factors that determine the performance of broadband PLT systems and to investigate how to maximise system performance while minimising the effect of PLT on HF radio systems. The study concentrates on the requirements for Access Band systems used to provide local loop service operating on 230/400V three-phase Low Voltage mains distribution networks.

The basis of the study is a comprehensive set of measurements made on Low Voltage mains distribution networks in the UK, mainland Europe and Australia.

The new approach to PLT band planning taken in this thesis uses Claude Shannon's information theory to predict the data capacity of arbitrary 3MHz sub bands. The results of the measurement programme are used to determine an optimum frequency band plan for PLT systems, taking account of the needs of the systems and the protection of other users of the HF spectrum. An example of how the proposed band plan can be used on a typical LV distribution network is included.

The use of the mathematical models with the results of the attenuation, noise and emission measurements show that it is possible to improve on both the frequency band plans proposed in current PLT standards and the nonstandard frequency usage of many PLT trial systems. This will facilitate the achievement of competitive performance without causing undue radio interference, thus potentially making broadband PLT more acceptable to the HF radio community.

The choice of modulation and coding systems required to deliver the predicted performance in the presence of transient interference is also discussed.
Conversion of α‐hydroxy(2,4,6‐trimethylbenzyl)diphenylphosphine oxide to TPO: oxidation vs decomposition
Creators: name: Zhang, Jian-Qiu
name: Jingzhuo Zhao
name: Chunya Li
name: Jingjing Ye
name: Li-Biao Han
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Physiology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Marine Biology
subject: Inorganic Chemistry
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: This study details the oxidation of α-hydroxy(2,4,6-trimethylbenzyl)diphenylphosphine oxide (α-HDPO) to diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) by choosing the proper MnO2 as oxidant. In addition, the equilibrium of α-HDPO and 2,4,6-trimethylbenzaldehyde (MesCHO) was discussed.
Accumulation and depletion layer thicknesses in organic field effect transistors
Creators: name: Kiguchi, Manabu
name: Nakayama, Manabu
name: Fujiwara, Kohei
name: Ueno, Keiji
name: Shimada, Toshihiro
name: Saiki, Koichiro
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a simple but powerful method to determine the thicknesses of the accumulation and depletion layers and the distribution curve of injected carriers in organic field effect transistors. The conductivity of organic semiconductors in thin film transistors was measured in-situ and continuously with a bottom contact configuration, as a function of film thickness at various gate voltages. Using this method, the thicknesses of the accumulation and depletion layers of pentacene were determined to be 0.9 nm (VG=-15 V) and 5 nm (VG=15 V).
description: 3 pages, 4 figures, Jap. J. Appl. Phys. in press
Box/peanut-shaped bulges in action space
Creators: name: Debattista, Victor P.
name: Liddicott, David J.
name: Khachaturyants, Tigran
name: Silva, Leandro Beraldo e
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We introduce the study of box/peanut (B/P) bulges in the action space of the initial axisymmetric system. We explore where populations with different actions end up once a bar forms and a B/P bulge develops. We find that the density bimodality due to the B/P bulge (the X-shape) is better traced by populations with low radial, JR,0, or vertical, Jz,0, actions, or high azimuthal action, Jϕ,0. Generally populations separated by JR,0 have a greater variation in bar strength and vertical heating than those separated by Jz,0. While the bar substantially weakens the initial vertical gradient of Jz,0, it also drives a strikingly monotonic vertical profile of JR,0. We then use these results to guide us in assigning metallicity to star particles in a pure N-body model. Because stellar metallicity in unbarred galaxies depends on age as well as radial and vertical positions, the initial actions are particularly well suited for assigning metallicities. We argue that assigning metallicities based on single actions, or on positions, results in metallicity distributions inconsistent with those observed in real galaxies. We therefore use all three actions to assign metallicity to an N-body model by comparing with the actions of a star-forming, unbarred simulation. The resulting metallicity distribution is pinched on the vertical axis, has a realistic vertical gradient and has a stronger X-shape in metal-rich populations, as found in real galaxies.
description: Submitted to MNRAS. Comments welcome. The appendix of figures for the simulation suite will be available, until journal publication, at http://www.star.uclan.ac.uk/~vpd/appendix.pdf (Caution: 57Mb)
Hénadas nº2 - ¿Es el pesimismo desconsolador?
Creators: name: Hartmann, Eduard von
name: Cornejo, Manuel Pérez
Publisher: name: figshare
Year: 2022
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion

description: Traducción de ¿Es el pesimismo desconsolador? de Eduard von Hartmann
Vacuum Solutions of Einstein's Equations in Parabolic Coordinates
Creators: name: Viaggiu, Stefano
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a simple method to obtain vacuum solutions of Einstein's equations in parabolic coordinates starting from ones with cylindrical symmetries. Furthermore, a generalization of the method to a more general situation is given together with a discussion of the possible relations between our method and the Belinsky-Zakharov soliton-generating solutions.
description: 15 pages, version published in Class. Quantum Grav
Finite-distance gravitational deflection of massive particles by the Kerr-like black hole in the bumblebee gravity model
Creators: name: Li, Zonghai
name: Övgün, Ali
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we study the weak gravitational deflection angle of relativistic massive particles by the Kerr-like black hole in the bumblebee gravity model. In particular, we focus on weak field limits and calculate the deflection angle for a receiver and source at a finite distance from the lens. To this end, we use the Gauss-Bonnet theorem of a two-dimensional surface defined by a generalized Jacobi metric. The spacetime is asymptotically non-flat due to the existence of a bumblebee vector field. Thus the deflection angle is modified and can be divided into three parts: the surface integral of the Gaussian curvature, the path integral of a geodesic curvature of the particle ray and the change in the coordinate angle. In addition, we also obtain the same results by defining the deflection angle. The effects of the Lorentz breaking constant on the gravitational lensing are analyzed. In particular, we correct a mistake in the previous literature. Furthermore, we consider the finite-distance correction for the deflection angle of massive particles.
description: 10 pages. Accepted for publication in Physical Review D (https://journals.aps.org/prd/accepted/2f075Q54Yc61d726a4e76b7039e3f7ff75cad8901)
Sektor energetyczny, a wyzwania zrównoważonego rozwoju – analiza przestrzennego zróżnicowania sytuacji w UE w oparciu o wybrane wskaźniki
Energy sector and the challenges of sustainable development – analysis of spatial differentiation of the situation in the EU based on selected indicators
Creators: name: Kozar, Łukasz
name: Kozar, Łukasz
Publisher: name: Unknown
Year: 2018
Subjects: subject: Environmental Economics and Policy
subject: International Relations/Trade
subject: Resource /Energy Economics and Policy
subject: sustainable development
subject: renewable energy sources
subject: energy sector
subject: energy efficiency
subject: zrównoważony rozwój
subject: odnawialne źródła energii
subject: sektor energetyczny
subject: efektywność energetyczna

description: The article presents selected issues currently discussed in the field of sustainable development in the European Union, and related at the same time to the energy sector. Therefore, the issues of resource efficiency and energy efficiency, energy production from renewable sources, or social exclusion caused by the lack of access to affordable energy sources were discussed. In addition to the analysis of the literature on the subject, the ranking of the European Union countries (EU-28) in terms of the level of development of the energy sector in the context of sustainable development was presented. For this purpose, a multidimensional comparative analysis was carried out using 8 indicators selected in the course of theoretical analysis concerning social, economic and environmental aspects related to the development of the energy sector. The time scope of the analysis covered 2016 (data availability). The source of values of the adopted variables was Eurostat. The analyzes carried out showed that the best situation in the energy sector compared to all of the countries surveyed was characterized by Denmark. / Synopsis. W artykule przedstawiono wybrane kwestie aktualnie poruszane w zakresie zrównoważonego rozwoju w Unii Europejskiej, a związane jednocześnie z sektorem energetycznym. Stąd też została omówiona problematyka zasobooszczędności oraz efektywności energetycznej, produkcji energii z odnawialnych źródeł, czy też wykluczenia społecznego wywołanego brakiem dostępności do źródeł energii po przystępnej cenie. Poza analizą literatury przedmiotu został przedstawiony ranking krajów Unii Europejskiej (UE-28) pod względem poziomu rozwoju sektora energetycznego w kontekście problematyki zrównoważonego rozwoju. W tym celu przeprowadzono wielowymiarową analizę porównawczą przy użyciu wybranych w toku analizy teoretycznej 8 wskaźników dotyczących aspektów społecznych, gospodarczych i środowiskowych związanych z rozwojem sektora energetycznego. Zakres czasowy analizy obejmował 2016 r. (dostępność danych). Źródłem wartości przyjętych zmiennych był Eurostat. Przeprowadzone analizy wykazały, iż najlepszą sytuacją w zakresie sektora energetycznego na tle ogółu przebadanych państw cechowała się Dania.
description: eISSN 2544-0659
Quiescent String Dominance Parameter F and Classification of One-Dimensional Cellular Automata
Creators: name: Sakai, Sunao
name: Kanno, Megumi
name: Saito, Yukari
Publisher: name: arXiv
Year: 2003
Subjects: subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: The mechanism which discriminates the pattern classes at the same $λ$, is found. It is closely related to the structure of the rule table and expressed by the numbers of the rules which break the strings of the quiescent states. It is shown that for the N-neighbor and K-state cellular automata, the class I, class II, class III and class IV patterns coexist at least in the range, $\frac{1}{K} \le λ\le 1-\frac{1}{K} $. The mechanism is studied quantitatively by introducing a new parameter $F$, which we call quiescent string dominance parameter. It is taken to be orthogonal to $λ$. Using the parameter F and $λ$, the rule tables of one dimensional 5-neighbor and 4-state cellular automata are classified. The distribution of the four pattern classes in ($λ$,F) plane shows that the rule tables of class III pattern class are distributed in larger $F$ region, while those of class II and class I pattern classes are found in the smaller $F$ region and the class IV behaviors are observed in the overlap region between them. These distributions are almost independent of $λ$ at least in the range $0.25 \leq λ\leq 0.75$, namely the overlapping region in $F$, where the class III and class II patterns coexist, has quite gentle $λ$ dependence in this $λ$ region. Therefore the relation between the pattern classes and the $λ$ parameter is not observed. PACS: 89.75.-k Complex Systems
description: 27 pages in latex, 10 Postscript figures
Wartość dodana na wybranych gałęziach polskiego rynku żywnościowego
Value Added on Selected Branches of the Polish Food Market
Creators: name: Krawczak, Marcin
name: Krawczak, Marcin
Publisher: name: Unknown
Year: 2018
Subjects: subject: Financial Economics
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: value added
subject: food industry
subject: food marketing chain
subject: income statement
subject: wartość dodana
subject: przemysł spożywczy
subject: łańcuch marketingowy żywności
subject: rachunek zysków i strat

description: The notion of added value is not uniform. Several definitions can be found in the literature. Some of them are presented in this article, along with various methods of its calculation. The analysis of the added-value dynamics was analyzed, where it was found that the most studied branches of the food industry were under the category of "Production of meat products, including products from poultry meat". Next, the share of value added in the sales volume, the share of individual components in the added value itself was determined and the coefficients of variation of these components were calculated and interpreted. In addition, the efficiency in the production of added value per employee was examined, where not only the best performance, but also the fastest improving efficiency in the analyzed period was found in the industry category "Manufacture of grain mill products". / Synopsis. Pojęcie wartości dodanej nie jest jednolite. W literaturze można znaleźć kilka odmiennych od siebie definicji. Część z nich zostały przedstawione w niniejszym artykule artykułu wraz z różnymi metodami jej obliczania. Analizie poddano dynamikę wartości dodanej, gdzie stwierdzono, że z badanych gałęzi przemysłu spożywczego najlepiej rozwija się „Produkcja wyrobów z mięsa, włączając wyroby z mięsa drobiowego”. Następnie określono udział wartości dodanej w wielkości sprzedaży, udział poszczególnych składników w samej wartości dodanej oraz obliczono i zinterpretowano współczynniki zmienności tych składników. Ponadto zbadano wydajność w wytwarzaniu wartości dodanej na jednego pracownika, gdzie nie tylko najlepszą wydajnością, ale także najszybciej poprawiającą się wydajnością w analizowanym okresie stwierdzono w gałęzi przemysłu „Wytwarzanie produktów przemiału zbóż”.
description: eISSN 2544-0659
Factorising numbers with a Bose-Einstein condensate
Creators: name: Weiss, Christoph
name: Page, Steffen
name: Holthaus, Martin
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The problem to express a natural number N as a product of natural numbers without regard to order corresponds to a thermally isolated non-interacting Bose gas in a one-dimensional potential with logarithmic energy eigenvalues. This correspondence is used for characterising the probability distribution which governs the number of factors in a randomly selected factorisation of an asymptotically large N. Asymptotic upper bounds on both the skewness and the excess of this distribution, and on the total number of factorisations, are conjectured. The asymptotic formulas are checked against exact numerical data obtained with the help of recursion relations. It is also demonstrated that for large numbers which are the product of different primes the probability distribution approaches a Gaussian, while identical prime factors give rise to non-Gaussian statistics.
description: 17 pages, 7 figures, RevTeX
Covariant Light-Front Approach for s-wave and p-wave Mesons: Its Application to Decay Constants and Form Factors
Creators: name: Cheng, Hai-Yang
name: Chua, Chun-Khiang
name: Hwang, Chien-Wen
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the decay constants and form factors of the ground-state s-wave and low-lying p-wave mesons within a covariant light-front approach. Numerical results of the form factors for transitions between a heavy pseudoscalar meson and an s-wave or p-wave meson and their momentum dependence are presented in detail. In particular, form factors for heavy-to-light and B to D** transitions, where D** denotes generically a p-wave charmed meson, are compared with other model calculations. The experimental measurements of the decays B^- to D** pi^- and B to D D**_s are employed to test the decay constants of D**_s and the B to D** transition form factors. The heavy quark limit behavior of the decay constants and form factors is examined and it is found that the requirement of heavy quark symmetry is satisfied. The universal Isgur-Wise (IW) functions, one for s-wave to s-wave and two for s-wave to p-wave transitions, are obtained. The values of IW functions at zero recoil and their slope parameters can be used to test the Bjorken and Uraltsev sum rules.
description: 59 pages, 6 figures. Version to appear in Phys. Rev. D. Changes are: (i) D_s to phi transition form factors are discussed and compared with the recent FOCUS measurements and (ii) zero mode effects are clarified