cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Energy Optimization in Binary Star Systems: Explanation for Equal Mass Members in Close Orbits
Creators: name: Adams, Fred C.
name: Batygin, Konstantin
name: Bloch, Anthony M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Observations indicate that members of close stellar binaries often have mass ratios close to unity, while longer-period systems exhibit a more uniform mass-ratio distribution. This paper provides a theoretical explanation for this finding by determining the tidal equilibrium states for binary star systems --- subject to the constraints of conservation of angular momentum and constant total mass. This work generalizes previous treatments by including the mass fraction as a variable in the optimization problem. The results show that the lowest energy state accessible to the system corresponds to equal mass stars on a circular orbit, where the stellar spin angular velocities are both synchronized and aligned with the orbit. These features are roughly consistent with observed properties of close binary systems. We also find the conditions required for this minimum energy state to exist: [1] The total angular momentum must exceed a critical value, [2] the orbital angular momentum must be three times greater than the total spin angular momentum, and [3] the semimajor axis is bounded from above. The last condition implies that sufficiently wide binaries are not optimized with equal mass stars, where the limiting binary separation occurs near $a_0\approx16R_\ast$.
description: 13 pages, 2 figures, accepted for publication in MNRAS
title: Ecosystem properties of acid grasslands along a gradient of nitrogen deposition
Creators: name: Stevens, Carly
Publisher: name: The Open University
Year: 2004

description: Sixty-eight randomly selected grasslands belonging to the National Vegetation Classification group U4 (Festuca ovina-Agrostis capillaris-Galium saxatile grassland) were studied during the summers of 2002 and 2003 along a gradient of atmospheric N deposition ranging from 6 to 36 kg N ha-1 yr-1 to investigate potential damage caused by acidification and eutrophication. At each site vegetation was surveyed and samples were taken from the topsoil and subsoil. Above-ground plant material was collected from three species: Agrostis capillaris, Galium saxatile and Rhytidiadelphus squarrosus.

Species richness showed a negative linear trend with N deposition, with a reduction of 1 species for every 2.5 kg N ha-1 yr-1. At the current mean N deposition in Europe this gave a reduction in species richness of 23% from a projected pristine condition. Forbs accounted for the majority of this decline, showing reductions in both cover and abundance along the N-deposition gradient. Grasses showed a decrease in species richness, but an increase in cover, indicating increased dominance of a few species. Using canonical correspondence analysis, several individual species were identified as being positively and negatively associated with N deposition.

Soil pH declined along the N-deposition gradient. This was also associated with increased mobilisation of aluminium, arsenic and lead. Nitrate concentration in the soil did not increase with increasing N inputs, possibly due to rapid plant uptake and its mobility in the soil profile. Soil extractable ammonium concentration showed a significant positive correlation with N inputs. A weak relationship was also identified between the C:N ratio in the soil and N inputs. Potential ammonium mineralization showed considerable variation across the sites.

There was no correlation between aboveground tissue Nand N deposition for any of the three species examined. A weak correlation was identified between tissue N and soil C:N for G. saxatile. Tissue N:P ratios gave no clear indication of nutrient limitation.

The relative merits of different indicators of N-deposition are discussed.
Whitham systems and deformations
Creators: name: Maltsev, A. Ya.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the deformations of Whitham systems including the "dispersion terms" and having the form of Dubrovin-Zhang deformations of Frobenius manifolds. The procedure is connected with B.A. Dubrovin problem of deformations of Frobenius manifolds corresponding to the Whitham systems of integrable hierarchies. Under some non-degeneracy requirements we suggest a general scheme of the deformation of the hyperbolic Whitham systems using the initial non-linear system. The general form of the deformed Whitham system coincides with the form of the "low-dispersion" asymptotic expansions used by B.A. Dubrovin and Y. Zhang in the theory of deformations of Frobenius manifolds.
description: 27 pages, Latex
Commissioning and simulation of CHROMIE, a high-rate test beam telescope
Creators: name: Asenov, Patrick
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The upgrade of the LHC to the High-Luminosity LHC (HL-LHC) is expected to increase the current instantaneous luminosity by a factor of 5 to 7, providing the opportunity to study rare processes and measure precisely the standard model parameters. To cope with the increase in pile-up (up to 200), particle density and radiation, CMS will build new silicon tracking devices with higher granularity (to reduce occupancy) and improved radiation hardness. During the R&D period tests performed under beam are a powerful way to develop and examine the behavior of silicon sensors in realistic conditions. The telescopes used up to now have a slow readout (less than 10 kHz) for the needs of the CMS experiment, since the new outer-tracker modules have an effective return-to-zero time of 25 ns (corresponding to a 40 MHz frequency) and a trigger rate of 750 kHz. In order to test the CMS Tracker modules under the LHC nominal rate, a pixel telescope named CHROMIE (CMS High Rate telescOpe MachInE) is designed, built and commissioned at CERN for beam tests with prototype modules for the CMS Phase-2 Tracker upgrade. In this article the design of CHROMIE, the calibration of its modules, and its timing and synchronization aspects are presented, along with the first beam test results. In addition, the tracking algorithm developed for CHROMIE and a preliminary Geant4 simulation study of the telescope under beam are discussed.
description: 9 pages 5 figures 21st International Workshop on Radiation Imaging Detectors 7-12 July 2019 Crete Greece
TYPE AND AMOUNT OF INPUT-BASED PRACTICE IN CALI : THE REVELATIONS OF A TRIANGULATED RESEARCH DESIGN
Creators: name: Cerezo-Ceballos, Luis
Publisher: name: National Foreign Language Resource Center (NFLRC) at the University of Hawai’i, University of Hawai‘i Center for Language and Technology; Center for Language Education, and Research (CLEAR) at Michigan State University
Year: 2023
Subjects: classificationCode: 47
subject: Language, communication and culture

description: Published in: Language Learning and Technology, vol. 20, no. 1, pp. 100-123, February 2016.
Supporting_Information_EF_16.04.20.pdf
Creators: name: Williams, David Samuel
Publisher: name: figshare
Year: 2020
Subjects: subject: 49999 Earth Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences

description: This Supplementary Material provides an example application of a method for enhancing capacity of local governance for climate change adaptation, published in Earth's Future (2020) 
Development Strategies for Rural Tourism in Mishkhas Village
Creators: name: Samani, Roya Eshraghi
name: Malekshahi, Shima
name: Poursaeed, Alireza
name: Samani, Roya Eshraghi
name: Malekshahi, Shima
name: Poursaeed, Alireza
Publisher: name: Unknown
Year: 2016
Subjects: subject: Community/Rural/Urban Development
subject: Resource /Energy Economics and Policy
subject: Rural Tourism
subject: Rural development
subject: SWOT

description: Rural tourism is a factor in multidirectional development of rural areas and its most important consequences are population stability, unemployment problem alleviation, and immigration reduction. The present survey was set to investigate the strategies of developing rural tourism in Mishkhas Village in Ilam Province using the SWOT technique. A questionnaire was used as the data gathering instrument and the sample size was determined to be 368 based on the Krejcie and Morgan table. The Cronbach alpha coefficient was used to show the reliability of research instrument which came out to be 0.87. In this research, the internal (strengths and weaknesses) and external factors (threats and opportunities) of the region were ranked by the SWOT technique. It was indicated that the amount of advantages with the obtained value of 5.87 (strengths and opportunities) was higher than limitations rate of weaknesses and threats (4.531). Thus, according to the results, the strategy of developing rural tourism was applied in this region.
Adapted Sequences and Polyhedral Realizations of Crystal Bases for highest weight modules
Creators: name: Kanakubo, Yuki
name: Nakashima, Toshiki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Algebra (math.QA)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: The polyhedral realizations for crystal bases of the integrable highest weight modules of $U_q(\mathfrak{g})$ have been introduced in ([T.Nakashima, J. Algebra, vol.219, no. 2, (1999)]), which describe the crystal bases as sets of lattice points in the infinite $\mathbb{Z}$-lattice $\mathbb{Z}^{\infty}$ given by some system of linear inequalities, where $\mathfrak{g}$ is a symmetrizable Kac-Moody Lie algebra. To construct the polyhedral realization, we need to fix an infinite sequence $ι$ from the indices of the simple roots. If the pair ($ι$,$λ$) ($λ$: a dominant integral weight) satisfies the `ample' condition then there are some procedure to calculate the sets of linear inequalities. In this article, we show that if $ι$ is an adapted sequence (defined in our paper [Y.Kanakubo, T.Nakashima, arXiv:1904.10919]) then the pair ($ι$, $λ$) satisfies the ample condition for any dominant integral weight $λ$ in the case $\mathfrak{g}$ is a classical Lie algebra. Furthermore, we reveal the explicit forms of the polyhedral realizations of the crystal bases $B(λ)$ associated with arbitrary adapted sequences $ι$ in terms of column tableaux. As an application, we will give a combinatorial description of the function $\varepsilon_i^*$ on the crystal base $B(\infty)$.
description: 38 pages. arXiv admin note: text overlap with arXiv:1904.10919
Factors Influencing the Gardening Management Skills among Citrus Farmers (Case of Iran, Sari)
Creators: name: Dadoukolaei, Mehdi Alikhani
name: Langerodi, Mehdi Charmchian
name: Zameni, Amir
name: Dadoukolaei, Mehdi Alikhani
name: Langerodi, Mehdi Charmchian
name: Zameni, Amir
Publisher: name: Unknown
Year: 2016
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Skill
subject: Gardening management
subject: Citrus farmers
subject: Sari

description: Production management is the best and foremost factor in exploiting the production factors more desirably and advantageously. Accordingly, the present study sought to evaluate the factors affecting the gardening management skills among citrus farmers in Sari, north of Iran. The statistical population for the study was 12,800 people. The stratified random sampling using the Cochran test was applied, and 250 subjects were selected for the study. The research instrument was a researcher- made questionnaire, the content validity of which was confirmed by the agricultural and extension experts and its reliability was estimated by Cronbach's alpha as to be 0.94. The data analysis results showed that the respondents’ gardening management skills was at high (41.6%) and average levels (54.1%). Considering the research findings, there was a significant positive correlation at the one percent level between citrus farmers’ gardening management skills and social, knowledge, attitude, educational factors, the total cultivated area and gardening experience. Also, there was a significant positive correlation at the five percent level between citrus farmers’ gardening management skills and the garden area, citrus annual income and the distance of the garden to the agriculture center. Considering the stepwise regression results, 45.7% of the variation in respondents’ gardening management skills was accounted for by three variables of knowledge, educational factor and the total area of cultivated land, serving as the best predictor of citrus farmers’ gardening management skills in Sari.
title: Proefstortingen Westerschelde: deelrapport 6. Analyse beunstalen bij de uitvoering van de stortproeven 2021 in de Westerschelde
Creators: name: Plancke, Yves
name: Bastiaensen, Ellen
Publisher: name: Flanders Hydraulics Research
Year: 2021

description: Title : WL Rapporten. Waterbouwkundig Laboratorium: Antwerpen. Volume : 19_079_6 Issue : Pagination : VII, 6 + 7 p. bijl.
Techno-economic Efficiency of Trunk and Mechanical Harvest Aid Shakers for Harvesting Olive Fruits in Guilan Province, Iran
Creators: name: Nayeri, Farhad
name: Torkashvand, Ali Mohammadi
name: Nayeri, Farhad
name: Torkashvand, Ali Mohammadi
Publisher: name: Unknown
Year: 2016
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: Canned olive
subject: Mechanical olive harvest
subject: Economic
subject: Technical performance

description: The main concern of an olive grower is primarily to achieve more income and profits. A harvesting method having higher efficiency and better fruit and oil quality, but a higher operation cost leads to a lower benefit. A study was carried out to evaluate the techno-economic performances of Trunk Shaker (TS) and Mechanical Harvest Aid (MHA) shaker for harvesting the yellow and Manzanilla olive cultivars in Guilan province, Iran. A factorial experiment based on randomized complete block design was used in four treatments at three replicates. The percentage of harvested fruit, fruit harvest rate (kg h -1 ), harvesting efficiency, leaf abscission, canned fruit acidity, and the percentage of bruised fruits, fruit tissue resistance were determined as the technical traits and benefit to cost ratio to evaluate the economic performance of experimental olive harvesting methods. The results showed that the TS with 60.6 had more harvesting percent of fruit than the MHA (24.1). Average harvesting time of a tree was recorded 10.7 minutes by TS that this was 8.2 minutes in MHA. The harvesting efficiency in TS method of Manzanilla variety was much more MHA method and yellow variety. The efficiency was 100.38 kg h -1 in TS that is more than in the method of MHA with 43.72 kg h -1 . Fruits harvested with TS, with an average of 1.07 Newton, had a higher firmness of the fruits in compared to MHA method. TS method with 1270 dollar per day had more benefit compared to MHA method with a profit of $606.
title: G-Quadruplex Structure Improves the Immunostimulatory Effects of CpG Oligonucleotides
Creators: name: Hoshi, Kazuaki
name: YAMAZAKI, TOMOHIKO
name: Sugiyama, Yuuki
name: Tsukakoshi, Kaori
name: Tsugawa, Wakako
name:  Sode, Koji
name: Ikebukuro, Kazunori
Publisher: name: National Institute for Materials Science
Year: 2020
Subjects: peripheral blood mononuclear cells
IL-6
CpG ODN
G-quadruplex
toll-like receptor 9

description: Single-strand oligodeoxynucleotides (ODNs) containing unmethylated cytosine-phosphate-guanine (CpG) are recognized by the toll-like receptor 9, a component of the innate immunity. Therefore, they could act as immunotherapeutic agents. Chemically modified CpG ODNs containing a phosphorothioate backbone instead of phosphodiester (PD) were developed as immunotherapeutic agents resistant to nuclease degradation. However, they cause adverse side effects, and so there is a necessity to generate novel CpG ODNs. In the present study, we designed a nuclease-resistant nonmodified CpG ODN that forms G-quadruplex structures. G-quadruplex formation in CpG ODNs increased nuclease resistance and cellular uptake. The CpG ODNs designed in this study induced interleukin-6 production in a human B lymphocyte cell line and human peripheral blood mononuclear cells. These results indicate that G-quadruplex formation can be used to increase the immunostimulatory activity of CpG ODNs having a natural PD backbone.
description: Nucleic Acid Therapeutics 2019 29:4, 224-229
Rauwolfia tetraphylla L. – Bee Supporting Plant during Nectar and Pollen Dearth
Creators: name: Sharma, Devinder
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Rauwolfia tetraphylla L. – Bee Supporting Plant during Nectar and Pollen Dearth
Factors Affecting Pistachio Export Earnings Instability and its Effect on Agricultural Exports
Creators: name: Mehrjerdi, Mohammadreza Zare
name: Azizi, Asiyeh
name: Korooni, Zahra
name: Mehrjerdi, Mohammadreza Zare
name: Azizi, Asiyeh
name: Korooni, Zahra
Publisher: name: Unknown
Year: 2016
Subjects: subject: Crop Production/Industries
subject: International Relations/Trade
subject: Agricultural export
subject: Instability index
subject: Pistachio export earnings
subject: VECM

description: Among agricultural products in Iran, pistachio is one of the major export products that can produce foreign currency. The present study evaluated factors affecting pistachio export earnings instability and its effect on agricultural export during the studied period. For this purpose, export earnings instability index was calculated using "average absolute difference between export earnings and its trend". The Vector Error Correction Model (VECM) was used for estimating models over period 1973-2010. The results indicated that pistachio commodity concentration index had negative effect, but pistachio product instability and gaps of exchange rate had direct relationship with pistachio export earnings instability. Also, the results of the estimation of agricultural export function indicated that pistachio export earnings instability had negative and significant impact on export agriculture.
Financial Comparison of Management Methods of Rice Blast Disease in Langerood County, Iran
Creators: name: Motlagh, Mohammad Reza Safari
name: Salkooyeh, Farzaneh Fallahpoor
name: Motlagh, Mohammad Reza Safari
name: Salkooyeh, Farzaneh Fallahpoor
Publisher: name: Unknown
Year: 2016
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Research and Development/Tech Change/Emerging Technologies
subject: Rice blast
subject: Financial comparison
subject: Agriculture management
subject: Chemical management

description: The objective of the present study was to financially compare chemical and agricultural management methods of rice blast disease, as a prevalent disease in paddy fields of Langerood in Guilan Province, Iran. Thirty-three rice experts and 373 paddy farmers were selected by random sampling procedures. Data were collected by a research made questionnaire and were analyzed by SPSS. Benefit Cost Ratio (BCR) was utilized for analysis to recognize the most efficient disease management method. Given the costs in 2012 and the evaluation of economic variables of chemical disease management procedures in paddy fields per acre, it became evident that agricultural disease management methods can replace the chemical ones financially. Furthermore, the comparison of farmers’ demographic, economic and agricultural characteristics by Chi-squared test among agronomic method and chemical method users showed no significant relationship between paddy farmers’ gender, age and farming experience, but there was a significant relationship between cultivation area and management method at the 0.05 significant level. However, there was a significant correlation between disease management methods and the size of the area under cultivation. Furthermore, there were significant differences between experts and farmers’ professional viewpoints in their preferences of disease management methods. While experts insist on an integrated application of chemical and agricultural procedures, most farmers apply chemical disease management methods.
title: Molecular Recognition of Damaged DNA Using Synthetic Affinity Reagents
Creators: name: Turner, Jayne Susan
Publisher: name: The Open University
Year: 2004

description: Potentially carcinogenic DNA damage that may be derived from dietary sources can be quantified using a number of methods. Some of the best of these methods are based on the use of antibodies that have high affinity and specificity for modified DNA bases. However, given the sometimes limited availability of antibodies there is a requirement for novel reagents that mimic the properties of the best antibodies. From a chemical perspective antibodies are 'over engineered' and synthetic affinity reagents would recreate the optimal properties of the binding site with respect to selectivity and affinity.

Phage display was used to identify amino acid residues that contribute to recognition of a diet derived DNA adduct O6-carboxymethyl-2'-deoxyguanosine. However, this information was not sufficient to synthesise a novel peptide reagent directly and it was decided to develop an approach whereby a library of compounds was synthesised which includes the characteristics expected within the binding site of an antibody. This library was based around cholic acid, a readily available scaffold molecule with suitable functionality compatible with linking amino acids and a fluorescent tag.

A synthetic procedure based on the formation of stable oxime derivatives of cholic acid was optimised and a small library of pyrene-tagged trisubstituted cholic acid derivatives was characterised. The library was examined for its ability to bind to affinity columns containing immobilised O6-carboxymethylguanosine and there was some evidence that indicated specific binding of a subset of library molecules.
A Birkhoff-Kellogg type theorem for discontinuous operators with applications
Creators: name: Calamai, Alessandro
name: Infante, Gennaro
name: Rodríguez-López, Jorge
Publisher: name: arXiv
Year: 2024
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 47H10, secondary 34A36, 34K10, 47H05, 47H11, 47H30, 54H25

description: By means of fixed point index theory for multi-valued maps, we provide an analogue of the classical Birkhoff--Kellogg Theorem in the context of discontinuous operators acting on affine wedges in Banach spaces. Our theory is fairly general and can be applied, for example, to eigenvalues and parameter problems for ordinary differential equations with discontinuities. We illustrate in details this fact for a class of second order boundary value problem with deviated arguments and discontinuous terms. In a specific example, we explicitly compute the terms that occur in our theory.
description: 20 pages
The Endless Beta Integrals
Creators: name: Sarkissian, Gor A.
name: Spiridonov, Vyacheslav P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider a special degeneration limit $ω_1\to - ω_2$ (or $b\to {\rm i}$ in the context of $2d$ Liouville quantum field theory) for the most general univariate hyperbolic beta integral. This limit is also applied to the most general hyperbolic analogue of the Euler-Gauss hypergeometric function and its $W(E_7)$ group of symmetry transformations. Resulting functions are identified as hypergeometric functions over the field of complex numbers related to the ${\rm SL}(2,\mathbb{C})$ group. A new similar nontrivial hypergeometric degeneration of the Faddeev modular quantum dilogarithm (or hyperbolic gamma function) is discovered in the limit $ω_1\to ω_2$ (or $b\to 1$).
description: equations (62), (69) and (72) corrected
title: A Possible Magnetic Structure of the Cluster-Based Haldane Compound Fedotovite K2Cu3O(SO4)3
Creators: name: Hase, Masashi
name: Rule, Kirrily C.
name: Hester, James R.
name: Fernandez-Baca, Jaime A.
name: Masuda, Takatsugu
name:  Matsuo, Yukari
Publisher: name: National Institute for Materials Science
Year: 2020
Subjects: magnetic structure
neutron diffraction
cluster-based Haldane compound
magnetism
K2Cu3O(SO4)3

description: We carried out neutron powder diffraction experiments on the cluster-based Haldane compound fedotovite K2Cu3O(SO4)3. Weak magnetic reflections caused by a magnetic long-range order appeared below an antiferromagnetic transition temperature TN =3.1 K. We propose a possible magnetic structure that is consistent with the magnetic properties reported in the literature.
description: Journal of the Physical Society of Japan, 88, 094708 (2019)
COVID-19 Bibliometrics 15th – 21st February 2021
Creators: name: Www.Covid19bibliometrics.Org
Publisher: name: Zenodo
Year: 2021
Subjects: COVID-19
Medicine and Health
Science and Engineering
Social Science, Humanities and Public Policy
novel Coronavirus
SARS-CoV-2

description: This is a compilation of COVID-19 research insights published from 15th – 21st February 2021 in these fields: Medicine and Health Science and Engineering Social Science, Humanities and Public Policy
 Introduction: The number of confirmed cases during the current Covid-19 pandemic is escalating exponentially. At the same time, the public are constantly being inundated with a formidable quantity of information, from innumerable sources, and containing both genuine as well as fake news. The Covid-19 “infodemic” is here. Health professionals including medical doctors and nurses are busy fighting the virus on the front line in our communities and hospitals and struggling to treat the ever-growing number of cases. Scientists and technicians at their bench-tops and computers in their research laboratories, are racing to find solutions, create new protective equipment, and ideally develop a vaccine. They all need accurate, timely and reliable information upon which they can make their decisions, find solutions, and help defeat this pandemic. This initiative aims to provide reliable and timely (initially at least twice a week) web updates on the relevant published literature. “Reliable” and “timely” means that it can be trusted and it is up to date; “relevant” and “published” means that it is focused on what health professionals and scientists need when facing both the pandemic and the infodemic, and it can be trusted as sound science. We plan to make the material succinct and accessible, and to provide key bibliometric indices such as source and citation.
 Objectives: 1. To update the global scientific community on current Covid-19 related published papers in an accessible, timely and trusted format
 2. To analyse the published papers for trends and to provide insights
 3. To identify gaps in research
 4. To promote international research collaboration with a view to overcoming Covid-19 and promoting recovery Methodology: Covid-19 related publications to be searched using the Scopus database using as a minimum the following keywords: 2019-nCoV, SARS-CoV-2, Covid-19, novel Coronavirus. Papers then to be categorized according to topic, research fields, institutions, countries, etc. Abstracts and papers to be reviewed for findings, trends, key insights, etc. To read previous COVID-19 research insights, please go to:
 https://zenodo.org/communities/covid19bibliometrics/
description: More information, please go to https://www.covid19bibliometrics.org/
Astromyelon W.C.Williamson 1883
Creators: name: Galtier, Jean
name: Ronchi, Ausonio
name: Broutin, Jean
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Equisetales
Calamitaceae
Astromyelon

description: Astromyelon sp. (Fig. 5F)
We will designate under this name the calamitean roots and rootlets which represent one of the most common elements of the plant assemblage, and
 hiscent sporangia with folded wall) (SAR45A2L08); B -D, transverse sections of cones; B, part of one section showing the cone axis (upper right) surrounded by whorls of sporangia (S) and bracts (B) (SAR63A01); C, detail of a similar section showing the cone axis, at right, the base of one sporangiophore stalk (ST), sporangia in oblique-longitudinal section (S), two of them being attached to the sporangiophore peltate head (P) and distal lamina of bracts (B) at left (SAR01B3L13); D, distorted cone axis showing the attachement of several sporangiophore stalks (arrows) (SAR45BB04); E, detail of transverse sections of sporangia, one shows attachment to the sporangiophore peltate head (P), the two on the left contain spores (arrows) (SAR01B1BO3); F, Astromyelon sp., transverse section of a large decorticated root (SAR43CT01); G, Sphenophyllum sp., transverse section of a stem (SAR33C01). Scale bars: 1 mm.
 probably the most important in terms of volume. We illustrate one rather broad but decorticated woody root (Fig. 5F). Smaller roots (less than 1 cm in diameter) with a little or no secondary xylem have generally a lacunose cortex preserved and are assignable to the genus Myriophylloides. Similar roots are present in the Autun material, however, A. augustodunense Renault, 1896 and A. reticulatum Renault1896 differ in detail of their cortex and correspond to rather large roots like the one illustrated here of which cortical features are missing.
description: Published as part of Galtier, Jean, Ronchi, Ausonio & Broutin, Jean, 2011, Early Permian silicified floras from the Perdasdefogu Basin (SE Sardinia): comparison and bio-chronostratigraphic correlation with the floras of the Autun Basin (Massif central, France), pp. 43-69 in Geodiversitas 33 (1) on pages 52-56, DOI: 10.5252/g2011n1a4, http://zenodo.org/record/4596948
The Ofpe/WN9 stars in M33
Creators: name: Bianchi, Luciana
name: Bohlin, Ralph
name: Massey, Philip
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present HST/STIS Ultraviolet spectra of the six known Ofpe/WN9 stars (``slash stars'') in M33. These stars were selected for showing the characteristics of the Ofpe/WN9 class from previous optical ground-based spectroscopy. The UV spectra are rich in wind lines, whose strength and terminal velocity vary greatly among our target sample. We analyse the STIS spectra with non-LTE, line blanketed, spherical models with hydrodynamics, computed with the WM-basic code. We find C to be underabundant and N overabundant, respect to the solar values, with a ratio (by mass) of C/N between 0.02 to 0.9 across the sample. Some stars show very conspicuous wind lines (P Cygni profiles), while two stars have extremely weak winds. The mass-loss rates thus vary greatly across the sample. The mass-loss rates of the hottest stars are lower than typical values of WNL stars, but higher than expected for normal population I massive stars. There is indication that the mass-loss rates may be variable in time. The C/N ratio, and the other physical parameters derived by the spectral modeling (Teff, Lbol, mass), are consistent with evolutionary calculations for objects with moderately high initial masses (approx 30-50 solar masses), evolving towards the WNL stage through an enhanced mass-loss phase.
description: 7 figures (some in color). ApJ, in press (tentatively V.601 Jan.20 2004)
YURISDIKSIYANI BELGILASHNING NAZARIY MUAMMOLARI: HUQUQIY DOKTRINALAR VA YONDASHUVLAR
Creators: name: Oybekova Shohida Shomurod qizi Toshkent dаvlаt yuridik universiteti mаgistri
Publisher: name: Zenodo
Year: 2024

description: Ushbu dissertatsiya tadqiqotida yurisdiksiyani belgilashning nazariy muammolari, huquqiy doktrinalar va yondashuvlar tahlil qilinadi. Tadqiqot yurisdiksiyaning asosiy tushunchalari, uning huquqiy tabiati va turi, shuningdek, yurisdiksiyani belgilash mezonlariga bag‘ishlangan. Unda yurisdiksiya qoidalarini qo‘llash bilan bog‘liq muammolar va ziddiyatlar ko'rib chiqiladi. Shuningdek, turli xil huquqiy tizimlar va doktrinalar taqqoslanadi, yurisdiksiyani belgilash bo‘yicha yondashuvlar tahlil qilinadi. Natijada, yurisdiksiyani belgilash masalalarida qonunchilikni takomillashtirish bo'yicha amaliy takliflar ishlab chiqiladi.

Kalit so‘zlar: nazariy muammolar, huquqiy doktrinalar, huquqiy tizim, qonunchilikni takomillashtirish
Biosorption of cadmium and nickel ions using marine macrophyte, Cymodocea nodosa
Creators: name: Moawad, Madelyn N.
name: El-Sayed, Abeer A.M.
name: Naglaa A. El-Naggar
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
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: Seagrass (Cymodocea nodosa) ability to remove cadmium and nickel ions from single metal solutions was investigated in the present study. Metal ions were measured in the solution using an atomic absorption spectrophotometer. Various operational parameters (initial pH, biomass dose, metal ion concentration, and contact time) were tested and found to affect the uptake capacity of Cd (II) and Ni (II). More than 70% of biosorption capacity occurred in the first few minutes for both metal ions. The pseudo-second-order kinetic model and the Langmuir model were found to best fit the experimental data of Cd (II) and Ni (II) biosorption. The maximum uptake capacity (qmax) was 11.6 and 16.7 mg.g−1 for Cd (II) and Ni (II), respectively. The biosorbent was characterised using Fourier transform infrared spectrometry (FTIR), scanning electron microscope (SEM), and energy-dispersive X-ray spectroscopy (EDX). The infrared spectrum demonstrated that hydroxyl, carboxyl, and phenolic functional groups are the major binding sites for Cd (II) and Ni (II) metals. The ion exchange mechanism plays an important role during biosorption process as shown in EDX analysis. Our results conclude that marine macrophyte C. nodosa can be used as a low-cost biosorbent for the removal of Cd (II) and Ni (II) in wastewater.
Robust optical-levitation-based metrology of nanoparticle's position and mass
Creators: name: Zheng, Yu
name: Zhou, Lei-Ming
name: Dong, Yang
name: Qiu, Cheng-Wei
name: Chen, Xiang-Dong
name: Guo, Guang-Can
name: Sun, Fang-Wen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Light has shown up an incredibe capability in precision measurement based on opto-mechanic interaction in high vacuum by isolating environment noises. However, there are still obstructions, such as displacement and mass estimation error, highly hampering the improvement of absolute accuracy at the nanoscale. Here, we present a nonlinearity based metrology to precisely measure the position and mass of a nanoparticle with optical levitation under $10^{-5}$ mbar, 6-order of magnitude lower than the electrostatic-force and stochastic-force-based counterparts. By precisely controlling the amplitude of the levitated nanoparticle at the nonlinear regime, we realized a feasible sub-picometer-level position measurement with an uncertainty of $1.0\%$ without the prior information of mass, which can be further applied to weigh the femtogram-level mass with an uncertainty of $2.2\%$. It will also pave the way to construct a well-calibrated opto-mechanic platform in high vacuum for high sensitivity and accuracy measurement in force and acceleration at the nanoscale and the study in quantum superposition at the mesoscopic scale.
description: 9 pages, 6 figures
What are the Bounds on Space-Time Noncommutativity?
Creators: name: Calmet, Xavier
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this article we consider the bounds on the noncommutative nature of space-time. We argue that these bounds are extremely model dependent. In the only phenomenologically viable framework, i.e. when the fields are taken to be in the enveloping of the Lie algebra, the constraints are fairly loose and only of the order of a few TeV.
description: 10 pages
Fisheries management measures: incentives and governance issues
Creators: name: Floc’h, Pascal Le
name: Murillas, Arantza
name: Aranda, Martin
name: Daurès, Fabienne
name: Fitzpatrick, Mike
name: Guyader, Olivier
name: Hatcher, Aaron
name: Macher, Claire
name: Marchal, Paul
name: Floc’h, Pascal Le
name: Murillas, Arantza
name: Aranda, Martin
name: Daurès, Fabienne
name: Fitzpatrick, Mike
name: Guyader, Olivier
name: Hatcher, Aaron
name: Macher, Claire
name: Marchal, Paul
Publisher: name: Unknown
Year: 2014
Subjects: subject: Environmental Economics and Policy
subject: Management
subject: Fishery governance
subject: Common Fishery Policy

description: The list of past and existing management measures applied to different fisheries developed in European Western waters is analysed from a typology of co-management between government and stakeholders. Faced with increasing constraints on accessing fish stocks, management measures have evolved toward individualisation of fishing rights, limited access and other specific management measures. Restrictions on fish stocks access have changed fishermen behaviour in several major ways. A comparative methodology, based on qualitative data collected through interviews and focus groups, is developed for fisheries commercially exploited by fishing fleets from different European countries: France, Ireland, Spain and the United Kingdom. Past and existing individual authorisations experienced in the four countries are reviewed and compared.
Measurement of the $^{154}$Gd(n,$γ$) cross section and its astrophysical implications
Creators: name: Mazzone, A.
name: Cristallo, S.
name: Massimi, C.
name: Collaboration, the n_TOF
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The neutron capture cross section of $^{154}$Gd was measured from 1 eV to 300 keV in the experimental area located 185 m from the CERN n\_TOF neutron spallation source, using a metallic sample of gadolinium, enriched to 67$\%$ in $^{154}$Gd. The capture measurement, performed with four C$_{6}$D$_{6}$ scintillation detectors, has been complemented by a transmission measurement performed at the GELINA time-of-flight facility (JRC-Geel), thus minimising the uncertainty related to sample composition. An accurate Maxwellian averaged capture cross section (MACS) was deduced over the temperature range of interest for s process nucleosynthesis modeling. We report a value of 880(50) mb for the MACS at $kT=30$ keV, significantly lower compared to values available in literature. The new adopted $^{154}$Gd(n,$γ$) cross section reduces the discrepancy between observed and calculated solar s-only isotopic abundances predicted by s-process nucleosynthesis models.
title: Science, technology and agency in the development of droughtprone areas: a cognitive history of drought and scarcity
Creators: name: Vincent, Linden Faith
Publisher: name: The Open University
Year: 2004

description: Drought and scarcity are two frameworks in common use to study the relationships between natural phenomena creating lack of water (drought) and the lack of access to water for human security and economic development (scarcity). This thesis studies how these frameworks have shaped public action in droughtprone and scarcity regions over time, in the agencies created for water development, and their cognitive and technical norms used in analysis of drought and scarcity and design of development programmes. These public agencies have relied on science and technology both to generate new understanding of drought mechanisms and social and environmental dynamics shaping scarcity, and also mobilise water sources to reduce vulnerabilities in droughtprone regions. It explores two hypotheses: that scientific, technological and political elites build their power - or struggle to remain prominent actors - through the cognitive and technical norms that they build; and that a cognitive framework linking drought and scarcity can transform options to assess, allocate and use water resources in droughtprone areas. The thesis presents case studies from three droughtprone regions, India, Yemen and Zimbabwe. These regions have different patterns of drought risk and intensity, which manifest themselves in different dependencies and risks on different water sources - soil moisture, groundwater and surface water - to support agricultural production. They are also very different types of state in terms of their commitment to public action for development. The countries show differing dependencies on techno-scientific networks, technoeconomic networks and district and community level management in shaping livelihood security in the face of drought, and have had different performances in mitigating drought impacts and creating equitable institutions to mediate scarce water resources. Future public action will be better informed by the emergence of critical science with a stronger commitment to shared knowledge and participatory debate.
Exploring the Role of Unearned and Non-Wage Income on Regional Income Convergence
Creators: name: James, Ryan D.
name: Campbell Jr., Harrison S.
name: James, Ryan D.
name: Campbell Jr., Harrison S.
Publisher: name: Unknown
Year: 2016
Subjects: Community/Rural/Urban Development
Financial Economics

description: In the second half of the 20th century, regional income in the United States converged. Convergence was driven largely by neo - classical forces where capital flows from regions of high wages to regions of low wages in search of greater returns. The formal test for convergence, driven by the attractive and repulsive effects of wage levels, regresses changes in in- come against initial income levels. However, unearned and non - wage have become increasingly important components of income, yet their effects on the convergence process is largely unexplored. To add insight to their role in convergence, this paper deconstructs Per Capita Personal Income into its component parts – Wages and Supplements, Dividends, Interest and Rent, Transfer Payments, and Proprietor’s Income – and tests for unconditional convergence among Metropolitan/Micropolitan areas across three time periods. Results suggest consistent convergence stemming from wages and significant, localized effects stemming from the unearned, non - wage income streams.
Modelling COVID-19 evolution and control in Portugal: Code and data from 2 of March to 19 August 2020.
Creators: name: Pais, Ricardo Jorge
name: Taveira, Nuno
Publisher: name: figshare
Year: 2020
Subjects: subject: 111706 Epidemiology
subject: FOS: Health sciences

description: Supplementary data and code used for modelling the evolution of COVID-19 Pandemic in Portugal. In this online repository we include the code for implementing the mathematical model and running the simulations using PLAS software. We include the data of the number of confirmed cases in Portugal officially reported by the DGS up to 19 August 2020 (TableS1 and Figure S1) and the results obtained by simulations (TableS2). We also include the python source code for data analysis and visualization using Jupyter notebook environment.
Sphenophyllum
Creators: name: Galtier, Jean
name: Ronchi, Ausonio
name: Broutin, Jean
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Sphenophyllales
Sphenophyllaceae
Sphenophyllum

description: Sphenophyllum sp. (Fig. 5G)
We only found two specimens of these small stems, partly decorticated but showing well-developed secondary xylem. There is no diagnostic feature allowing a specific identification. This genus extends up to the Early Permian where it has been found preserved as compressions at Autun (Igornay).
FERNS
Ferns, particularly marratialean tree ferns, are the most common element of the flora.
description: Published as part of Galtier, Jean, Ronchi, Ausonio & Broutin, Jean, 2011, Early Permian silicified floras from the Perdasdefogu Basin (SE Sardinia): comparison and bio-chronostratigraphic correlation with the floras of the Autun Basin (Massif central, France), pp. 43-69 in Geodiversitas 33 (1) on page 56, DOI: 10.5252/g2011n1a4, http://zenodo.org/record/4596948
Confined Steady States of a Relativistic Vlasov-Maxwell Plasma in a Long Cylinder
Creators: name: Weber, Jörg
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The time evolution of a collisionless plasma is modeled by the relativistic Vlasov-Maxwell system which couples the Vlasov equation (the transport equation) with the Maxwell equations of electrodynamics. In this work, the setting is two and one-half dimensional, that is, the distribution functions of the particles species are independent of the third space dimension. We consider the case that the plasma is located in an infinitely long cylinder and is influenced by an external magnetic field. We prove existence of stationary solutions and give conditions on the external magnetic field under which the plasma is confined inside the cylinder, i.e., it stays away from the boundary of the cylinder.
Ankyropteris brongniartii Renault 1869
Creators: name: Galtier, Jean
name: Ronchi, Ausonio
name: Broutin, Jean
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Zygopteridales
Tedeleaceae
Ankyropteris
Ankyropteris brongniartii

description: Ankyropteris brongniartii Renault, 1869   (Fig. 6 A-G)
 This small tedelean fern is one of the best known Palaeozoic ferns (Phillips & Galtier in press); it has a wide stratigraphic range from Early Pennsylvanian to Early Permian where it was first described from Autun by Renault (1869) and from Chemnitz by Stenzel (1889) under the name Ankyropteris scandens. This fern is a vine known to have been growing on trunks of the Psaronius tree ferns.We found portions of all the different parts of the tripinnate frond in a few specimens. The primary rachis (Fig. 6A) has the characteristic H-shaped xylem strand, and a secondary rachis with the base of third order one is illustrated on Figure 6B. Foliage of this fern was found lying gently within accumulations of leaves of other plants (Fig. 6C).Tertiary rachises (R3, Fig. 6 C-E) and pinnules have been observed.Their excellent preservation reveals unknown details on the anatomy of the rather rigid pinnules (Fig. 6 C-G). Their lamina proves to be significantly thicker than in the rare examples previously described from Pennsylvanian material; the histology of the mesophyll is revealed as well as the occurrence of stomata (arrows, Fig. 6F, G). Unfortunately fertile pinnae have not been found.
description: Published as part of Galtier, Jean, Ronchi, Ausonio & Broutin, Jean, 2011, Early Permian silicified floras from the Perdasdefogu Basin (SE Sardinia): comparison and bio-chronostratigraphic correlation with the floras of the Autun Basin (Massif central, France), pp. 43-69 in Geodiversitas 33 (1) on page 56, DOI: 10.5252/g2011n1a4, http://zenodo.org/record/4596948