bluuebunny/crossref_metadata_2025_split huggingface dataset:
Redox-conducting polymers based on metal-salen complexes for energy storage applications
Authors: Chepurnaya Irina A. , Karushev Mikhail P. , Alekseeva Elena V. , Lukyanov Daniil A. , Levin Oleg V. 
Published: July 2020

Abstract
Metal-salen polymers are electrochemically active metallopolymers functionalized with multiple redox centers, with a potential for high performance in various fields such as heterogeneous catalysis, chemical sensors, energy conversion, saving, and storage. In light of the growing world demand for the development of superior energy storage systems, the prospects of employing these polymers for advancing the performance of supercapacitors and lithium-ion batteries are particularly interesting. This article provides a general overview of the results of investigating key structure-property relationships of metal-salen polymers and using them to design polymer-modified electrodes with improved energy storage characteristics. The results of independent and collaborative studies conducted by the members of two research groups currently affiliated to the Saint–Petersburg State University and the Ioffe Institute, respectively, along with the related data from other studies are presented in this review.
Soft chemistry of pure silver as unique plasmonic metal of the Periodic Table of Elements
Authors: Semenova Anna A. , Veselova Irina A. , Brazhe Nadezhda A. , Shevelkov Andrei V. , Goodilin Eugene A. 
Published: July 2020

Abstract
The International Year of The Periodic Table of Chemical Elements revealed that the Table remains both a deeply fundamental paradigm for various branches of chemistry and a universal practical tool for predictable design of new materials. Silver is a notable “nanoelement” particularly known by its plasmonic properties. A key advantage of this metal is an easily achievable morphological variety of nanostructured materials. This element represents a research branch of precise engineering of shapes and sizes of nanoparticle ensembles and smart hierarchic nanostructures. In the review, unique features of silver are discussed with respect to the development of novel analytical methods for forthcoming applications of surface-enhanced Raman spectroscopy (SERS) in ecology, biology and medicine.
The heuristic model of energy propagation in free space, based on the detection of a current induced in a conductor inside a continuously covered conducting enclosure by an external radio frequency source
Authors: Piyadasa Chithra Kirthi Gamini , Annakkage Udaya , Gole Aniruddha , Rajapakse Athula , Premaratne Upeka 
Published: July 2020

AbstractThe objective of this study is to propose a heuristic model of energy propagation due to an anomaly; electromagnetic (EM) field penetration into a continuously covered conducting enclosure (Faraday shield) from an external radio frequency source, violating the accepted model in the EM field theory. In this study, at an arbitrarily selected frequency, range of 26.965–1,800 MHz, of an external frequency source, an EM field inside the conducting enclosure was observed, contrary to expectations, which was followed by a systematic examination. Although no induced voltage could be expected inside the enclosure according to the classical theory, the experiment revealed a clear induced voltage inside, an attenuated induced voltage of −18.0 to −1.0 dB (for the range of frequencies 26.965–1,800 MHz) was observed. Hence, these results apparently contradict the established notion that an EM field cannot penetrate a Faraday shield. Rationalizing these observations and the results of the investigation leads to an alternative model to the existing models of energy propagation in free space. In this model, novel quantities named “I-Spin-energy” and “I-Spin-energy field” are defined to replace the concept of electric and magnetic fields in the classical EM theory. The proposed I-Spin-energy model is capable of explaining the unexpected presence of the EM field inside the Faraday shield as well as the induction of an alternating current in a conductor placed inside a Faraday shield along with other existing observations in physics such as those in famous Young’s double-slit experiment on interference of light, which provided the basis for the wave theory.
Production of Cf-252 and other transplutonium isotopes at Oak Ridge National Laboratory
Authors: Robinson Sharon M. , Benker Dennis E. , Collins Emory D. , Ezold Julie G. , Garrison Jon R. , Hogle Susan L. 
Published: July 2020

Abstract
In 1957 Glenn T. Seaborg conceived and advocated for the construction of the High Flux Isotope Reactor (HFIR) and the Transuranium Processing Plant (since then renamed the Radiochemical Engineering Development Center, or REDC) at Oak Ridge National Laboratory. Heavily shielded hot cells, glove boxes, and laboratories allow recovery of transuranium elements produced in substantial quantities. Seaborg’s vision of HFIR and REDC producing milligram quantities of berkelium, californium, and einsteinium has been fulfilled beginning in 1966 through May 2019 with 78 production campaigns yielding a cumulative totals of 1.2 g of 249Bk, 10.2 g of 252Cf, 39 mg of 253Es, and 15 pg of 257Fm. Notably, 252Cf is a neutron source used in many industrial applications including oil exploration; process control systems for the cement industry, coal analysis, and power production; sources to start nuclear reactors and perform nondestructive materials analyses; homeland security and national defense detection devices; and medical research. Isotopes made available through transplutonium production at HFIR/REDC have enabled scientists to study the nuclear properties and reactions, chemical properties, optical properties, and solid-state properties of transplutonium elements. Long-lived isotopes have served as targets in heavy ion accelerators to produce heavier elements leading to the discovery of 104Rf, 105Db, 106Sg, 113Nh, 114Fl, 115Mc, 116Lv, 117Ts, and 118Og. This paper reviews the evolution of the processing flowsheets to produce, separate, and purify transplutonium isotopes, which have evolved over 50 years of operation at HFIR and REDC, and summarizes directions of future work to improve the efficiency of the production operations.
Direct extraction of uranium from yellow cake and ore matrices using supercritical carbon dioxide
Authors: Prabhat Parimal , Rao Ankita , Mishra Vivekchandra G. , Shah Dipti J. , Kumar Pradeep , Tomar Bhupinder S. 
Published: July 2020

AbstractThe study demonstrates the accomplishment of single step, direct supercritical fluid carbon dioxide (SC CO2) dissolution and extraction of uranium from crude matrices viz. yellow cakes (>90%) and rock phosphate ores (70%) employing adducts of trialkyl phosphates and nitric acid, thus avoiding free acid usage and eliminating number of process steps. Rock phosphate ore was made amenable for supercritical fluid extraction (SFE) system by unique strategy of pyrohydrolytic removal of fluorine. Pressure and temperature conditions, which were found to influence uranium extraction efficiency, were optimized at 150 atm. and 323 K. Two milliliter of adduct amount was found to be adequate. Adducts of branched alkyl phosphate, tri-isoamyl phosphate and tri-ethyl hexyl phosphate (TEHP), yield better purity in comparision to straight chain tri-butyl phosphate (TBP).
Effects of Elliptical Hole on the Correlation of Natural Frequency with Buckling Load of Basalt Laminates Composite Plates
Authors: Chhorn Buntheng , Jung WooYoung 
Published: July 2020

Abstract
Recently, basalt fiber reinforced polymer (BFRP) is acknowledged as an outstanding material for the strengthening of existing concrete structure, especially it was being used in marine vehicles, aerospace, automotive and nuclear engineering. Most of the structures were subjected to severe dynamic loading during their service life that may induce vibration of the structures. However, free vibration studied on the basalt laminates composite plates with elliptical cut-out and correlation of natural frequency with buckling load has been very limited. Therefore, effects of the elliptical hole on the natural frequency of basalt/epoxy composite plates was performed in this study. Effects of stacking sequence (θ), elliptical hole inclination (ϕ), hole geometric ratio (a/b) and position of the elliptical hole were considered. The numerical modeling of free vibration analysis was based on the mechanical properties of BFRP obtained from the experiment. The natural frequencies as well as mode shapes of basalt laminates composite plates were numerically determined using the commercial program software (ABAQUS). Then, the determination of correlation of natural frequencies with buckling load was carried out. Results showed that elliptical hole inclination and fiber orientation angle induced the inverse proportion between natural frequency and buckling load.
The role of the threshold effect for the dynamics of futures and spot prices of energy commodities
Authors: Rubaszek Michal , Karolak Zuzanna , Kwas Marek , Uddin Gazi Salah 
Published: July 2020

Abstract
This study examines whether threshold models allow to better understand the dynamic relationship between spot and futures prices for crude oil and natural gas. Our findings are threefold. First, we show that the futures curve delivers relatively accurate forecasts for energy commodity prices. Second, we provide evidence that the relationship between spot and futures prices is regime dependent but accounting for this property does not improve the quality of out-of-sample forecasts. Third, we demonstrate that using information on the dynamics of financial variables (exchange rates, stock and uncertainty indices, interest rates or industrial and precious metal prices) does not contribute to the quality of futures-based forecasts. This suggests that the predictive content of these variables is already contained in futures prices.
Evaluation of E2F3 and survivin expression in peripheral blood as potential diagnostic markers of prostate cancer
Authors: Wadaa Allah Ahmed M. , Abdel Hamid Fatma F. , Soliman Ahmed F. , Ibrahim Noha , Malash Ibrahim , Abdelgawad Iman A. 
Published: July 2020

Abstract

Background
Prostate cancer (PC) incidence has risen globally. As there are no current independent biomarkers with high diagnostic efficiency to detect PC, this study was performed to investigate the relative gene expression levels of E2F3 and survivin in the whole blood of PC, benign prostate hyperplasia (BPH), and normal control individuals and to explore their diagnostic value.

Material and methods
Participants of the study were divided into three groups; normal control group (n=25), BPH patients (n=25), and PC patients (n=75). The E2F3 and survivin gene expression levels were assessed using real-time qPCR in addition to the measurement of free and total levels of prostate-specific antigen (PSA) using electrochemiluminescence assays.

Results

Survivin relative gene expression was over-expressed in PC and BPH patients compared to the normal control group, whereas, E2F3 did not differ significantly among the studied groups. Compared to PSA, E2F3 and survivin mRNA expression levels had lower diagnostic efficacy to differentiate PC from normal and BPH individuals with an area under curve (AUC) of 0.471 and 0.727, respectively. Further, survivin expression level was associated with increased the risk of PC.

Conclusion

Survivin and E2F3 relative expression levels in peripheral blood had low diagnostic performance to detect PC and individuals with high survivin expression levels may have higher risk to develop PC.
Determination of vitamin 25-hydroxyvitamin D deficiency and insufficiency cut-off values in children
Authors: Şahin Kamil , Elevli Murat , Avcı Rıdvan , Coskun Cihan , Kiremitçi Yılmaz Seniha , Koldaş Macit 
Published: July 2020

Abstract

Objectives
There is no consensus on the lower and upper limits of 25-hydroxyvitamin D (25-OHD) deficiency and insufficiency. We determined the (25-OHD) deficiency and insufficiency cut-off values in children.

Methods
The study examined 422 children aged 0–18 years old whose simultaneous parathormone (PTH) and (25-OHD) levels were measured at the paediatric outpatient clinics of our tertiary research hospital in Istanbul from January 1, 2014 to December 31, 2017. Those without chronic diseases were included in this cross-sectional retrospective study.

Results
We found that the average serum (25-OHD) level was lower in girls. There were negative correlations between (25-OHD) and PTH and age. The level that decreased PTH below the upper level was 14.42 ng/mL and the 25(OH)D level that decreased it to the lowest limit was 26.61 ng/mL. The (25-OHD) level that caused maximum suppression of PTH was 22.5 ng/mL.

Conclusions
The vitamin (25-OHD) deficiency (lowest value) and insufficiency (range) cut-off should be 14–23 ng/mL for children living in Istanbul. By age subgroup, the vitamin (25-OHD) deficiency and insufficiency cut-off values are 21–31, 15–21 and 13–18 ng/mL for those 0–2, 3–6 and 7–18 years, respectively.
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Digital Syriac Corpus: A Digital Repository for Syriac Texts
Authors: Walters James E. 
Published: July 2020

Abstract
The Digital Syriac Corpus was launched publicly in May 2018. The goal of the corpus is to provide a venue for publishing digitized editions of Syriac texts. All of the texts in the Digital Syriac Corpus are open-access (CC BY 4.0) and freely available for anyone to use. The Digital Syriac Corpus includes texts that have been transcribed from print sources as well as manuscripts, and it also includes newly produced digital editions. The search feature, including advanced searching options, provides users the opportunity to analyze a large database of Syriac texts in ways that have never before been possible. It is hoped that as the project continues to develop, scholars and readers of Syriac texts will find new ways to use and analyze the data the Digital Syriac Corpus has collected and published. As an open-access digital repository, the Digital Syriac Corpus can also serve as a tool for the preservation of the Syriac language, not only for scholars who study the Syriac tradition, but also for the heritage communities who have preserved Syriac as a literary, liturgical, and spoken language for centuries.
Zur symbolischen Geltungsweise sozialer Praxis
Authors: Corsten Michael 
Published: July 2020

ZusammenfassungAusgehend von der Aktualität des ‚practical turns‘ in der soziologischen Diskussion fragt der Beitrag nach der Bestimmung von Praxis als symbolischer Praxis. Dazu werden erstens anhand der Sozialtheorien von Mannheim und Searle drei übereinstimmende Grundannahmen sondiert und als Kern einer Theorie der symbolischen Praxis herausgearbeitet. Mit Aussagen aus der Theorie symbolischer Praxis Bourdieus werden zweitens in Bezug auf die drei Grundannahmen sowohl Konvergenzen aufgezeigt als auch strukturtheoretischer Ergänzungsbedarf reklamiert. Demgegenüber zeigt Davidsons Bedeutungstheorie Prämissen, die sich in sozial- und prozesstheoretischer Hinsicht deutlich von Mannheim und Searle sowie von Bourdieu abheben. Vergleichend werden die drei rekonstruierten Ansätze als divergente Abzweigungsmöglichkeiten einer Theorie symbolischer Praxis ausgewiesen. Gleichwohl wird abschließend für eine Behebung der Unverträglichkeiten der Ansätze und insbesondere für eine Integration sowohl der strukturtheoretischen Ansprüche Bourdieus als auch des prozesstheoretischen Anliegens Davidsons plädiert, indem auf Problemstellungen innerhalb einer Theorie symbolischer Praxis hingewiesen wird, für deren Klärung sie fruchtbar gemacht werden könnten.
The Idea of Customary Law Community Representation in the Regional Representative Council
Authors: Joesoef Iwan Erar 
Published: July 2020

The Customary Law Community (Masyarakat Hukum Adat, MHA) as part of the Customary Law System is recognized for its existence and its implementation in the National Land Law (Hukum Tanah Nasional, HTN). In the Explanation of the Basic Agrarian Law (UUPA) it is stated that the function of Customary Law as the main source in the development of HTN, although such recognition is accompanied by conditions as long as in reality they still exist and in accordance with national and state interests. This paper analyses and examines the problems of MHA in the concept of regional representative council. The problem on this paper come up from various problems concerning to ulayat land and its conflict between indigenous people and government. The research emphasized that the main problem is the inequality of perception between the Executive, Judiciary and Legislative institutions in the consistency of compensation payments resulting in the re-claim of Tanah Ulayat (Adat), there is no basis for a multi-dimensional approach (anthropology, sociology and others besides the juridical approach). This means that the formal juridical approach alone does not achieve effective results. The question is whether the constitutional MHA can have representation in the Regional Representative Council (DPD) and what forms of democracy are appropriate and can channel the aspirations of the MHA.
Entre „Locarno“ et „splendid isolation“
Authors: Kuhn Franz 
Published: July 2020

Le rugby ne joue pas le même rôle dans les sociétés allemande et française. Alors qu’en France les stades sont très fréquentés et que le Top 14 fait parti des meilleurs championnats au monde, le rugby en Allemagne reste un sport marginal et ne suscite pas l’intérêt du grand public. Malgré une évolution tout à fait opposée, l’Allemagne et la France partagent une histoire commune en matière de rugby : entre 1927 et 1938, les relations rugbystiques étaient intenses. On compte durant cette période 16 matchs internationaux entre les deux sélections, des rencontres qui sont aujourd’hui très majoritairement tombées dans l’oubli en raison de l’importance, moindre, accordée au rugby allemand au niveau international. De même, ces échanges ont rencontré peu d’écho au sein de la recherche académique. Ils sont pourtant le résultat d’une configuration politique et sportive particulière de l’entre-deux-guerres. Encouragées par ‘l’esprit de Locarno’, les relations entre les deux fédérations reprirent en 1926. Les intérêts des fédérations respectives ainsi que les enjeux politiques conduisirent à une intensification de ces relations dans les années 1930. Il en résulta une alliance intéressée qui vit naître en 1934 la Fédération Internationale de Rugby Amateur (FIRA).
La traduction de l'article original sera mise en ligne sous peu.
À part entière et entièrement à part ?
Authors: Assibatu Soidiki 
Published: July 2020

À propos de:
Cosker, Christophe. 2019. L’invention de Mayotte. Pamandzi : La Route des Indes.
Dupont-Lassalle, Julie, François Hermet & Elise Rasler (Dir). 2019. La départementalisation de Mayotte : un premier bilan juridique et économique. Paris : L’Harmattan.
Idriss, Mamaye. 2018. Le combat pour Mayotte française (1958-1976). Paris : Karthala.
Metanogénesis microbiana en animales poligástricos
Authors: Bonilla-Sandí Daniel Javier , Noboa-Jiménez Lucía , Portuguez-Molina Victoria , Quinto-Ureña Fernando , Rojas-Gutiérrez Joel José 
Published: July 2020

La metanogénesis ruminal consiste en reacciones que sintetizan metano a partir de moléculas orgánicas y son realizadas por arqueas metanogénicas en el rumen. La metanogénesis microbiana en animales rumiantes trae consigo grandes repercusiones tanto en el metabolismo y productividad comercial de los mismos como en la estabilidad del medio ambiente en general. Uno de los principales factores que pueden afectar es la dieta del rumiante, así como su edad y la especie. Las estrategias de mitigación están orientadas a la disminución de la producción de gases de efecto invernadero (GEI) o el aumento de los mecanismos de captura de compuestos formadores de GEI. Pueden clasificarse en tres categorías: manipulación alimentaria y dietética, manipulación animal y manipulación microbiana. Estas influyen en la alteración del ecosistema ruminal y la tasa de metanogénesis. La cuantificación del metano producido por rumiantes permite orientar la erradicación de factores que favorecen la metanogénesis.
Cellobiose-dehydrogenase production by some fungal species isolated in rain forests of Northern Vietnam
Authors: Dinh Giap Vu , My Hiep Thai Thi , Huu Nghi Do 
Published: July 2020

Fungal enzymes are well-known as effective in hydrolyze lignocellulose-rich materials. This decomposition process requires many enzymes to participate in a coordinated factor to hydrolyze the polymer structure. Among them, there are some of popular oxidized enzymes such as lignin peroxidase, mangan peroxidase and laccase. Cellobiose dehydrogenase (CDH) is an extracellular enzyme found in various fungi, it was first discovered in 1974 by Westermark in white rot fungus Trametes verscolor and Phanerochaete chrysosporium. The biological role of CDH has been proven to participate in the decomposition of natural polymers such as cellulose, hemicellulose and lignin by generating hydroxyl radical through Fenton reaction. CDH has unique biochemical and catalytic properties that have been used in biosensors to detect cellodextrin, maltose, lactose and diphenol compounds or in biomedical applications such as lactobionic acid production. Therefore, CDH is an important component of the extracellular enzyme system for lignocellulose decomposition. In this study, 47 fungal strains isolated from rainforests of Cuc Phuong and Muong Phang National Parks and screened for CDH activity. Of which, 33 active fungi exhibited CDH activity from 8.89 to 74.4 U/L during growth on solid medium with rice straw as raw substrate. The highest enzyme production was identified for Coprinellus aureogranulatus (MPG14) reach 77.4 U/L on basic medium and its CDH activity of up to 237.4 U/L under optimal condition: supplemented with carbon source of α- cellulose (20 g/L), nitrogen source (5 g/L peptone) incubated for 12 days at 30℃, pH 5.5 and 200 rpm after inoculation. Thus, the fungus has the potential to exploit the CDH enzyme applied in the pretreatment of lignocellulose-rich materials.