bluuebunny/crossref_metadata_2025 huggingface dataset:
Characterization of Mulberry Genetic Resources for Multiple Traits
Authors:   Central Sericultural Germplasm Resources Centre, Central Silk Board, Ministry of Textiles, Govt. of India, Thally road, P.B. No. 44, Hosur (Tamil Nadu), India., Thriveni* M.C. , Mondal Raju ,   Central Sericultural Germplasm Resources Centre, Central Silk Board, Ministry of Textiles, Govt. of India, Thally road, P.B. No. 44, Hosur- 635 109 (Tamil Nadu), India., Thanavendan G. ,   Central Sericultural Germplasm Resources Centre, Central Silk Board, Ministry of Textiles, Govt. of India, Thally road, P.B. No. 44, Hosur- 635 109 (Tamil Nadu), India., Ravikumar G. ,   Central Sericultural Germplasm Resources Centre, Central Silk Board, Ministry of Textiles, Govt. of India, Thally road, P.B. No. 44, Hosur- 635 109 (Tamil Nadu), India., Sreenivasa B.T. ,   Central Sericultural Germplasm Resources Centre, Central Silk Board, Ministry of Textiles, Govt. of India, Thally road, P.B. No. 44, Hosur- 635 109 (Tamil Nadu), India.
Published: August 2021

Mulberry plants have wide range of variations in characters in view of its adaptability to cross pollination with no inter-specific reproduction barrier rendering it a heterozygous species. Every plant being different from the other in natural population, this great diversity makes it difficult to gather information and carry out studies on effect of different edaphic factors on the expression of genotypic characters for adjudging the variations. In lieu of this known diversity for posterity, the collection of mulberry genotypes from diverse genetic sources, their conservation, evaluation and consequent documentation is of prime importance. In the present study, 69 mulberry accessions were characterized for morphology, anatomy, and reproductive parameters. Evaluation for propagation, growth and yield characters were also carried out. Based on multiple trait analysis, 14 top performing accessions viz., MI-0879, MI-0882, MI-0908, MI-0931, MI-0907, MI-0940, MI-0881, MI-0941, MI0892, MI-0913, MI-0937, MI-0934, MI-0865, MI-0886 were identified. These accessions could serve as resources for further evaluation aimed at trait-specific crop improvement.
Quantity Surveying Profession and Its Prospects in Nigeria
Authors:   Lecturer and Head, Department of Quantity Surveying, Auchi Polytechnic, Auchi, Edo State, Nigeria., E.F* Uwadia , D.D.M Usman ,   Lecturer, Department of Quantity Surveying, Auchi Polytechnic, Auchi, Edo State, Nigeria., M.I. Amiebenomo ,   Lecturer, Department of Quantity Surveying, Auchi Polytechnic, Auchi, Edo State, Nigeria., S.O. Sumanu ,   Lecturer, Department of Quantity Surveying, Auchi Polytechnic, Auchi, Edo State, Nigeria.
Published: August 2021

The study assessed the prospects of the Quantity Surveying profession in Nigeria. The study identified and evaluated the level of performance of the identified functions performed by the quantity surveyors in the Nigerian Construction industry. The study reveals that there is a high level of performance of the basic functions of the quantity surveyors which include feasibility and viability studies, contract documentation, life cycle costing, preliminary cost advice, etc. The study also examined the factors militating against the effective performance of the quantity surveyor’s functions in the Nigerian Construction industry. The study identified and presented some possible factors militating against the performance of Quantity Surveying functions and some anticipated measures to enhance the quantity Surveying profession for evaluation by the respondents using structured questionnaires. The data collected were analyzed with SPSS version 23 using frequencies and mean item scores. The study revealed some major factors militating against the effective performance of the quantity surveying profession in the Nigerian Construction industry like widespread corruption in Nigeria with a mean score of 4.53, obsolete curriculum and inadequacy in modern equipment with a mean score of 4.41, professional rivalry from kindred profession with a mean score of 4.35, level of adoption of UT with mean a score of 4.32, and inadequacies in academic and professional training with a mean score of 4.18 among others. The study equally revealed some important measures requiring implementation to enhance the quantity of Surveying profession in Nigeria like a clear delineation in professional functions in the construction industry to curb professional rivalry with a mean score of 4.35, reviewing the curriculum of Tertiary Institutions with a mean score of 4.24, improving professional skills through continuing professional development with a mean score of 4.15, improving technological applications in the execution of Quantity Surveying functions with a mean score of 3.91 and professional certification in specialized areas with a mean score of 3.85.
FOSIC2020: Science and Technology in Combating Current and Future Global Challenges (LASU Virtual Conference, 2- 4 December 2020)
Authors: Anjorin Abdul-azeez
Published: August 2021

The Lagos State University 7th bi-annual Faculty of Science International Conference 2020 tagged LASU FOSIC2020 was held virtually from 2nd-4th December, 2020. The theme of the conference was Science and Technology in combating current and future global challenges. To justify the theme, different sub-themes were combined cutting across biological/medical, chemical and physical sciences including: global ecology and challenges of combating infectious human and zoonotic diseases, emerging perspectives on epidemiology of infectious diseases, post COVID-19 effects on fisheries and aquaculture, molecular approaches in curtailing the scourge of diseases, chemistry of natural resources for sustainable product development, medicinal plants as antidotes, dynamical system analysis, modelling and optimization, artificial intelligence in the 4th industrial revolution, and demystifying 5G technology: the role of physics in tackling global health challenges. This summary therefore presents some of the observations raised at the conference. Topical models and practical strategies at flattening the curve of COVID-19 pandemic in African most populous city, Lagos was presented by the Deputy Governor of Lagos State, while Director General of the Nigerian Institute for Medical Research delivered the keynote address followed by the special guest speaker from Harvard Medical School and Massachusetts General hospital, USA amongst others. To the best of our knowledge, FOSIC2020 was the first free and 100% virtual international conference organised by any Nigerian University to date. Overall, a total of 130 papers were presented by researchers out of the 334 registered participants representing 36 institutions from 14 countries across the world. FOSIC2020 was declared closed with a free technical workshop focusing on V2V global partnership from vulnerability to viability project by the team leaders from the University of Waterloo Canada and Lagos State University with members of panel as postgraduate students across different countries. Free electronics book of abstracts and certificates were given to all the participants.
The System of Financial Regulation
Authors: Anatolyevich Tsindeliani Imeda
Published: August 2021

The article is devoted to the ana lysis of the lega l nature of cr yptocurrenc y as an object of financial and legal regulation from the point of view of the Russian legislation. The analysis of the qualification of cryptocurrency is described as money, electronic money, foreign currency, other property, as well as the possibility of assigning crypto-loans to obligations rights. The conclusion is made about the possibility of treating cryptocurrency as private money on a par with national currencies.
100 Years of Taxes as a Means of State Functioning
Authors: Karfíková Marie
Published: August 2021

The article2 is prepared for the International Scientific Conference “Currency, Ta xes and Other Institutes of Financial Law in the Year of the 100th Anniversary of the Founding of Czechoslovakia”. The chosen topic is up-to-date from the point of view of ongoing discussions on the tax obligations of both natural and legal persons. Taxes are accepted by law in the Parliament of the Czech Republic, but they are also the subject of decisions of the Supreme Administrative Court and the Constitutional Court. Especially, taxes are also a scientific and pedagogical subject at the Faculty of Law of the Charles University. In today’s socio-economic and social order, in a society where there is no planned economy, taxes are significant in terms of their status as one of the few tools and instruments of managing and influencing the whole economy and the standard of living of the population. The aim of my article is to focus in detail on the provisions of constitutions related to taxes and finally on the subsection 11(5) of the Charter of Fundamental Rights and Liberties, especially in the context of its 100 years of historical development.The framework for examination is the current concept of the rule of law and the concept of tax law as a tax law in a broad sense (not only taxes, but also fees and other similar payments). The interpretation of the text is complemented by a historical excursion. Finally, Ideal with the future of tax laws. In conclusion, I try to evaluate the current tax legislation in the constitutional order of the Czech Republic.
Local Taxes in the Russian Federation in the Context of the Analysis of the Powers of Local Self-Government Bodies
Authors: Kireeva Elena
Published: August 2021

In this contribution the author presents the results of the analysis of legislation as well as monitoring the official web sites of the Ministry of Finance of the Russian Federation concerning local taxes. On the basis of methods of systematic, comparative legal analysis, monitoring and the study of normative regulation of local taxes in the Russian Federation, some conclusions are made about the ability of local governments to implement the functions assigned to them.
Features of Factor Analysis in Tax Consulting
Authors: Sergeevna Korobeinikova Larisa
Published: August 2021

A distinctive feature of factor analysis in tax consulting is that some of the parameters of taxation or all of them together serve as influencing factors or performance indicators. Therefore, factor analysis requires using the traditional characteristics of financial and economic activities of an economic entity as well as the indicators characterising the taxation parameters.
The Application of In-house Procurement by Municipalities in Municipal Services Management
Authors: Miemiec Wiesława
Published: August 2021

The topic of the article is the application of in-house procurement by municipalities in municipal services management. The essence of in-house contracts, also known as direct contracts, is a specific relation between the contracting authority and the economic operator. The contracting authority, which is a body governed by public law, exercises control over the economic operator, which is legally separated from its structure, similarly to the control it exercises over its own departments. Moreover, the economic operator is obliged not only to submit to this control, but also to carry out a principal part of its activities for the controlling contracting authority. It was often argued in the literature that awarding services, supplies, or works to one’s own subsidiaries without following a tendering or design contest procedure may adversely affect certain economic sectors, in particular by reducing competition or deteriorating the quality of provided services. The aim of this publication is to answer the question so formulated. To do so, one has to examine how in-house contracts have been regulated in the act currently in force.
Forecasting GDP Values as Part of the Budgetary Procedure – De Lege Lata and De Lege Ferenda Conclusions
Authors: Panfil Przemysław
Published: August 2021

The objective of the article is to verify the research hypothesis that the Polish rules of fiscal policy are susceptible to manipulation with the forecast GDP size adopted in the assumptions of the Budgetary Act. Such activities undertaken by the Council of Ministers lead to the creation of fiscal illusions and pose a threat to the financial order of the state. Therefore, they require the legislator to change the shape of the fiscal policy rules or to deprive the government of its competence to prepare macroeconomic forecasts for the budgetary procedure.
Immovable Property Tax Exemptions as a Tool of Tax Policy
Authors: Radvan Michal
Published: August 2021

This text is dea ling with the exemptions from the immovable propert y tax in the Czech Republic. It brings a new classification of tax exemptions and it overviews this type of correction components. It critically analyses de lege lata regulations in the given area. The hypothesis to be confirmed or disproved is that the Immovable Property Tax Act enables the implementation of the tax policy of both state and local governments. At the end, possible regulations de lege ferenda are drafted.
„Pasażerka”. Obraz wyrwany z błota
Authors: Cichoń Adam
Published: August 2021

W 50. rocznicę premiery Pasażerki Andrzeja Munka Tadeusz Lubelski stwierdził, że dla Jeana-Luca Godarda był to najlepszy film o wojnie jaki kiedykolwiek nakręcono. Mimo że trudno znaleźć potwierdzenie tych słów w źródłach, autor postanawia podjąć ową tezę i odpowiedzieć na pytanie, dlaczego Pasażerka mogłaby zyskać taki status. Tym samym stara się wykonać pracę wyobraźni, którą Georges Didi-Huberman zalecał jako metodę pozwalającą „mimo wszystko” mierzyć się z „niewyobrażalnym”. Jej założenia, a także te właściwe Benjaminowskiemu materializmowi historycznemu zostają w niniejszym artykule użyte do przemyślenia metod montażowych, które zastosowano w Pasażerce. Jest to bowiem wyjątkowy przykład filmu dokończonego po śmierci reżysera. Sposób zmontowania pozwala podjąć namysł nad traumą, a jednocześnie daje niezwykłe świadectwo obrazu wydobytego z błota „niewyobrażalnego”.
„Między dawnymi i młodszymi laty” – neo(animistyczne) i neo(pogańskie) tropy w kinie polskim
Authors: Podsiadło-Kwiecień Magdalena
Published: August 2021

W obrębie nowego animizmu proponuje się podejście do podmiotowości odmienne od zbudowanego na tradycji judeochrześcijańskiej, inną relację między naturą a kulturą, światem ludzkim i nie-ludzkim oraz ożywionym i nieożywionym. Elementy tego nurtu, peryferyjnego w kulturze polskiej, można odnaleźć w filmowych obrazach pogańszczyzny nadających mu status zjawiska wypartego bądź oswojonego przez chrześcijański kontekst. Twórcy współczesnych filmów polskich odwołujących się do tej tradycji szukają w niej spojrzenia na świat innego niż hierarchiczne, dualistyczne, oparte na modelu antropocentrycznym. Dzieła te łączy z ową tradycją egalitarny stosunek do świata zwierzęcego, szacunek do sprawstwa roślin, wiara w obecność duchów wykraczająca poza kontekst chrześcijański, wrażliwość na środowisko czy odniesienie do kultur pierwotnych. Jednocześnie autorzy tych dzieł dokonują jej rewaloryzacji, traktując ją jak „perspektywę ratunkową” w obliczu współczesnego kryzysu cywilizacyjnego.
Gwinejczyk na Alexanderplatz, czyli o możliwości zanieczyszczenia dominującej narracji
Authors: Fiuk Ewa
Published: August 2021

Czy między życiem w Republice Weimarskiej i współczesnej Republice Federalnej Niemiec istnieją jakieś punkty styczne? Czy los niemieckiego robotnika, mieszkańca Berlina pod koniec lat 20. XX w. można porównać do egzystencji afrykańskiego uchodźcy mieszkającego w stolicy Niemiec dziś? I w końcu: czy możliwe jest takie uwspółcześnienie i remediatyzacja opowieści, by różnica czasowa (niemal sto lat) i medialna (książka – film) istniejąca między jej jedną i drugą wersją nie pozbawiła tejże opowieści uroku i mądrości, jednym słowem: sensu? Odpowiedź na wszystkie pytania brzmi: tak. Autorka artykułu analizuje podobieństwa i różnice między powieścią Berlin Alexanderplatz: Dzieje Franciszka Biberkopfa Alfreda Döblina (1929) i filmem Berlin Alexanderplatz Burhana Qurbaniego (2020) w kontekście wybranych wątków teorii postkolonialnej, determinizmu społecznego oraz kategorii abiektu i ofiary Thomasa Elsaessera.
Od redakcji
Authors: Kosińska Karolina
Published: August 2021

Wprowadzenie do tematyki numeru.
ISSUES OF REGULATING PRICES FOR SEPARATE FOOD PRODUCTS IN THE ASPECT OF ENSURING THE ECONOMIC SECURITY OF THE RUSSIAN FEDERATION
Authors:   Candidate of Economic Sciences, Professor, Leading Researcher, Institute of Economics, Russian Academy of Sciences, Member of the Academy of Natural Sciences, Moscow, Russia, LEV M. Yu.
Published: August 2021

The paper examines the legislation on price regulation in certain industrially developed foreign countries in modern conditions of market economy. The development of the economic theory and practice of price regulation in the XX century in foreign countries is considered. The analysis of regulatory documents regulating prices for products in Austria, Belgium, France; changes in consumer prices in Russia and foreign countries is carried out. It is concluded that in ensuring the socio-economic security of the state, it is necessary to actively search for an economic theory that could become the foundation of a government economic program aimed at improving the welfare of the population.
DEVELOPMENT OF AN INDUSTRIAL CLUSTER WITHIN THE FRAMEWORK OF ENSURING THE ECONOMIC SECURITY OF THE ENTERPRISE
Authors:   Graduate student of the Department of Finance and Economic Security of Vyatka State University, Kirov, Russia, MAKSIMOVA N. A.
Published: August 2021

The article analyzes the classifications of clusters in the conditions of digitalization of various industries, the development of an industrial cluster and cluster analysis based on the "nearest neighbor" principle. Management solutions are proposed that contribute to ensuring the economic security of the enterprise.
CRYPTOCURRENCY AS A COMPLEXIBLE ASSET IN BANKRUPTCY PROCEDURES
Authors:   Candidate of Economic Sciences, Associate Professor of Accounting and Finance, Perm State Agrarian and Technological University named after Academician D. N. Pryanishnikov, Perm, Russian Federation, ZUBAREV I. S.
Published: August 2021

The emergence of cryptocurrencies has become a major challenge for the regulation of civil and public law. Cryptocurrency is a new object of civil law, and its legal regime is just being formed. However, cryptocurrencies have already started appearing in court cases. The Ninth Arbitration Court of Appeal agreed with the financial manager's arguments and decided to include bitcoins in the bankruptcy estate. According to the arguments of the court of second instance, with the correct application of the principles of civil law, cryptocurrency cannot be interpreted differently than “other property”. Refusal to include it in the bankruptcy estate violates the rights of creditors. The decision of the first instance court serves as a vivid example of literalism in the interpretation of the laws prevailing in Russian justice. At the same time, the decision of the Court of Appeal shows that in certain situations related to economic disputes and the protection of creditors' rights, this literalism can be overcome within the judicial branch of government. Moreover, this can be achieved even in the absence in the written law of norms that are directly applicable to the case in question. The interpretation by the Court of Appeal of cryptocurrency as other property (from the point of view of the Civil Code) is consistent with the concept of federal law dated July 31, 2020 N 259-FZ «On digital financial assets, digital currency and on amendments to certain legislative acts of the Russian Federation».
Modification in the histological structures of the testes of rabbits under the influence of the thiamethoxam
Authors:   Postgraduate Student of the Department of Physiology, Pharmacology and Toxicology named after A. N. Golikov and I. E. Mozgov, Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K. I. Skryabin, Moscow, Russian Federation Department of Forensic Medicine and Veterinary Toxicology, University of Alexandria, Alexandria, Egypt, Elsavasani A. R. , Deltsov A. A. ,   Doctor of Veterinary Sciences, Professor, Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K.I. Skryabin, Moscow, Russian Federation
Published: August 2021

Thiamethoxam (TMX) is one of new class neonicotinoid insecticides currently available in the Egyptian pesticide markets. The current study was designed to investigate the toxic effect of TMX on reproductive system in adult male rabbits. For this purpose, sixteen adult male Chinchilla rabbits were divided into two equal groups. Animals in the first group were treated orally with TMX at dose of 250 mg/kg b.wt for 90 days. The second group was served as control. Obtained results also showed that TMX treatment did not cause significant sperm DNA fragmentation, but caused marked alteration in sperm parameters (e.g. concentration, motility and morphology). In conclusion, administration of TMX for 90 days in male rabbits induced a noticeable adverse effect on the testicular function and structure. Degeneration and necrosis of the spermatogenic cells in addition to intertubular edema and vacuolations were the major observed histopathological lesions in the testis of intoxicated animals.
Ethics In Gene Editing
Authors: Diana I Made
Published: August 2021

For thousands of years, humans have felt the need to understand the world around them—and ultimately manipulate it to best serve their needs. There are always ethical questions to address, especially when the manipulation involves the human genome. There is currently an urgent need to actively pursue those conversations as com- mercial gene sequencing and editing technologies have become more accessible and affordable. Gene Editing has enormous potential both as a research tool and a therapeutic intervention. While other types of gene editing are relatively uncontroversial, gene editing has been strongly resisted.
Pediatric vs. adult NAFLD to MAFLD transition: a welcome but tangled path
Authors: Colucci Angelo , Rocco Maria Chiara , De Anseris Anna Giulia Elena , Nazzaro Lucia , Vajro Pietro , Mandato Claudia
Published: August 2021

The term non-alcoholic fatty liver disease (NAFLD) appears unfitting both in adults and in children. As obesity and metabolic syndrome play a relevant pathogenic role, an international group of adults’ liver disease experts has proposed to rename this condition metabolic (dysfunction)-associated fatty liver disease (MAFLD). While this new more appropriate and useful definition has mostly been met with good reactions in adults, it may present a tangled path in pediatrics. Here we further stress the recommendations of the North American and the European Societies for Pediatric Gastroenterology, Hepatology and Nutrition that a hyperechogenic liver in a child affected by obesity or overweight with chronically elevated liver enzymes should not be assumed to have NAFLD only. Especially in those patients who are not in the classic age range or who have particularly severe laboratory anomalies, other genetic, metabolic (inborn errors of metabolism, IEM), endocrine, intestinal and hepatic pediatric-onset conditions, should in fact be excluded, particularly when response to a weight loss trial is not available. The term pediatric fatty liver disease (PeFLD) with three subtypes (1. contextual diagnosis of an IEM; 2. Metabolic (dysfunction)-associated fatty liver; 3. unknown cause of fatty liver) has recently been proposed aiming to separate true MAFLD from IEM and/or the other above mentioned conditions, which may be rare when considered individually but represent a large group when considered collectively. Although the cost-effectiveness ratio of this attitude is still indeterminate, it is likely that the advantage of the early identification of a specifically treatable pediatric-onset liver disease associated to/mimicking MAFLD would be rewarding.
Bivalves from the white chalk (Maastrichtian) of Denmark, IV: Nuculoida
Authors: Heinberg Claus
Published: August 2021

Six species (4 of 1hem new) of nuculoid bivalves are described. representing the genera Nucula. Neila-11ella, Yo/die/la and 1he new genus Prosilic11/a. The genera Propeleda, Poro/eda and Lamelliledo arc discussed and partly redefined on the basis of their hinges.
Biogas to Fuel Cell State of The Art: A Review
Authors: Shafini Mohd Shafie  , A Harits Nu'man  , Nik Nurul Anis Nik Yusuf
Published: August 2021

Due to the emerging development in the energy industry, the demand for electricity consumption has sharply increased for each country. Therefore, a new recovery of energy resources is needed in consequence of the decreasing dependency on conventional energy resources, while sustaining energy security in the aspect of energy supply and climate change issues. The fuel cell is one of the most potential resources to be explored in order to overcome the constraints of the current energy generation. The aim of this paper is to discuss the entire cycle of the fuel cell system. It is starting from biogas production up to the recent studies related to life cycle assessment on fuel cell studies. Most of the researchers focused on the technical part of fuel cells; however, a comprehensive environmental assessment is essential to fully recognize the impact of fuel cells. Furthermore, this conceptual paper provided an idea on understanding the concept of fuel cell and referred to recently published articles related to life cycle assessment. Hopefully, this study can provide the guideline in determining the future energy for this country, in order to be less dependent on the current resources of energy supply.
MODELLING OF THE UNMANNED AERIAL VEHICLES FLIGHT CONTROL SYSTEM
Authors: Adamski Mirosław
Published: August 2021

The article is an independent work containing the author’s ingenious research methodology and the model of the control system of Unmanned Aerial Vehicles. Furthermore a unique and world first mathematical model of an Unmanned Aerial Vehicle was developed, as well as a simulation program which enabled to investigate the control system of any Unmanned Aerial Vehicles in the tilt duct pitch (altitude), bank (direction), deviation and velocity, depending upon the variable values of the steering coefficient, reinforcement coefficient and the derivative constant. The research program was written in the language of the C++ as the MFC class, on the MS Visual Studio 2010 platform. The main issue resolved in the article is the pioneering research of the process of control during manual and semi-automatic guidance of the Unmanned Aerial Vehicle, with a jet propulsion system to the coordinates of preset points of the flight route. Modelling of the flight control system takes into account: the logical network of operations of the simulation program, the pilot-operator model, the set motion and control deviations as well as the flight control laws. In addition, modeling of the control system takes into account the drive model, engine dynamics, engine thrust, the model of steering actuators and the model of external loads. In contrast, the external load model takes into account the external forces acting on the unmanned aircraft, including gravitational forces and moments, aerodynamic forces and moments, aerodynamic drag, aerodynamic lateral forces, aerodynamic lift forces, aerodynamic heeling moment, mechanism of local angle of attack from damping torque and forces and moments from the engine.
On the Evidence for a Common-spectrum Process in the Search for the Nanohertz Gravitational-wave Background with the Parkes Pulsar Timing Array
Authors: Goncharov Boris , Shannon R. M. , Reardon D. J. , Hobbs G. , Zic A. , Bailes M. , Curyło M. , Dai S. , Kerr M. , Lower M. E. , Manchester R. N. , Mandow R. , Middleton H. , Miles M. T. , Parthasarathy A. , Thrane E. , Thyagarajan N. , Xue X. , Zhu X.-J. , Cameron A. D. , Feng Y. , Luo R. , Russell C. J. , Sarkissian J. , Spiewak R. , Wang S. , Wang J. B. , Zhang L. , Zhang S.
Published: August 2021

A nanohertz-frequency stochastic gravitational-wave background can potentially be detected through the precise timing of an array of millisecond pulsars. This background produces low-frequency noise in the pulse arrival times that would have a characteristic spectrum common to all pulsars and a well-defined spatial correlation. Recently the North American Nanohertz Observatory for Gravitational Waves collaboration (NANOGrav) found evidence for the common-spectrum component in their 12.5 yr data set. Here we report on a search for the background using the second data release of the Parkes Pulsar Timing Array. If we are forced to choose between the two NANOGrav models—one with a common-spectrum process and one without—we find strong support for the common-spectrum process. However, in this paper, we consider the possibility that the analysis suffers from model misspecification. In particular, we present simulated data sets that contain noise with distinctive spectra but show strong evidence for a common-spectrum process under the standard assumptions. The Parkes data show no significant evidence for, or against, the spatially correlated Hellings–Downs signature of the gravitational-wave background. Assuming we did observe the process underlying the spatially uncorrelated component of the background, we infer its amplitude to be

A
=

2.2

−
0.3

+
0.4

×

10

−
15

in units of gravitational-wave strain at a frequency of 1 yr−1. Extensions and combinations of existing and new data sets will improve the prospects of identifying spatial correlations that are necessary to claim a detection of the gravitational-wave background.
Detailed Morphologic Mapping and Traverse Planning for a Rover-based Lunar Sample Return Mission to Schrödinger Basin
Authors: Morse Zachary R. , Osinski Gordon R. , Tornabene Livio L. , Bourassa Matthew , Zanetti Michael , Hill Patrick J. A. , Pilles Eric , Cross Matthew , King Derek , Tolometti Gavin
Published: August 2021

Schrödinger basin, a 312 km diameter complex impact structure located near the lunar south pole, has been widely cited as a prime target for future lunar exploration. In 2020 NASA identified Schrödinger as a high-priority landing site for a 2024 mission supported by the Payloads and Research Investigations on the Surface of the Moon solicitation and the Commercial Lunar Payload Services program. Schrödinger basin hosts an uplifted peak ring that would provide a surface mission with access to materials that originated deep within the lunar crust, as well as material ejected from the larger South Pole–Aitken basin. Schrödinger basin also hosts well-preserved mare and pyroclastic deposits that could provide valuable insight into volcanic processes on the Moon. This study used high-resolution Wide Angle Camera and Narrow Angle Camera images from the Lunar Reconnaissance Orbiter, elevation data from the Lunar Orbiter Laser Altimeter, and spectral data from the Clementine mission to produce a high-resolution morphologic map of the basin center consisting of 10 distinct morphologic units. This new map was used to plan traverse paths for a rover mission to the region. The design requirements for this traverse were based on those originally developed for the multiagency Human-Enhanced Robotic Architecture and Capability for Lunar Exploration and Science (HERACLES) mission and the Canadian Space Agency Precursor to Humans And Science Rover concept. The proposed traverse path includes up to 20 sample collection stops with the goal of better understanding lunar chronology, lunar volcanism, and the impact cratering process.
L’expérience doctorale en temps de crise sanitaire : épreuve, tensions, opportunités
Authors: Charmillot Maryvonne , Crousaz Frédéric
Published: August 2021

Que devient l’expérience doctorale dans le contexte du Covid-19 qui bouleverse, depuis février 2020, les routines institutionnelles, professionnelles et relationnelles ? Quelles sont les difficultés nouvelles auxquelles sont confrontés les doctorants et les doctorantes ? Quelles sont les difficultés exacerbées par la crise ? Ces questions au centre de cette contribution sont abordées à partir d’une double enquête, par questionnaire et par entretiens, auprès de doctorants et de doctorantes en sciences de l’éducation de quatre universités suisses. Les analyses mettent en avant l’importance de la reconnaissance institutionnelle et politique dans la construction de sens de l’expérience doctorale et la centralité des conditions de travail.
Les différentes dimensions de l’expérience vécue du confinement lié à la COVID-19 par la population générale et les acquis expérientiels des malades chroniques
Authors: Tourette-Turgis Catherine , Pereira Paulo Lennize
Published: August 2021

L’épidémie de la covid -19 et plus encore sa gestion sanitaire a impacté la population générale. Les outils existants des sciences humaines sociales de la santé ont permis de documenter en temps réel l’évolution des comportements et la santé mentale de la population générale afin d’adapter ou réajuster les politiques de santé publique. Cet article dresse un état des lieux des données françaises récentes et propose une approche de l’expérience vécue du confinement en mobilisant la notion de dimensions pour tenter de rendre compte de la complexité de l’expérience vécue du confinement en population générale. Il explore les savoirs expérientiels des malades ayant une expérience de confinement thérapeutique.
Expérience interculturelle et constructions biographiques : la mémoire autobiographique comme reflet du questionnement identitaire en situation interculturelle
Authors: Oulahal Rachid , Malbert Thierry
Published: August 2021

Cet article propose une exploration du concept de mémoire autobiographique et de son implication dans une situation d’appartenances culturelles plurielles. Nous analysons ainsi le lien entre la construction de l’identité et les expériences de vie dans des contextes interculturels. Dans un sens général, les situations interculturelles doivent être comprises comme toute situation dans laquelle des personnes sont exposées à des cultures multiples (immigration, origines culturelles multiples, etc.). Dans le cadre de nos travaux de recherche dans le champ de la psychologie interculturelle, l’analyse de récits de vie laisse percevoir la place que le contact de cultures peut prendre dans les processus identitaires et les formes qu’il peut alors revêtir dans la mémoire et la narrativité autobiographique. Nous proposons de présenter le cas d’Anne-Sophie dont le récit de vie nous permet d’identifier les occurrences d’un questionnement culturel tout au long de son histoire de vie sans pour autant qu’elle n’en fasse mention explicitement. Nous nous interrogeons alors sur la possibilité d‘une recherche inconsciente d’une identité (inter) culturelle pour Anne-Sophie.
Optociliary Venous Anastomosis After Radial Optic Neurotomy for Central Retinal Vein Occlusion
Authors: Friedman Scott M.
Published: August 2021

Radial optic neurotomy has been shown to be beneficial for the treatment of central retinal vein occlusion. Two patients developed optociliary venous anastomosis after radial optic neurotomy for central retinal vein occlusion with improvement in vision and clinical appearance. Optociliary venous anastomosis may portend a favorable prognosis.
[Ophthalmic Surg Lasers Imaging 2003;34:315–317.]
Retinal Vessel Changes in a Patient With Primary Systemic Nonfamilial Amyloidosis
Authors: Komatsuzaki Yuhko , Tanaka Minoru , Sakuma Toshiro , Kiyokawa Masatoshi , Takebayashi Hiroshi
Published: August 2021

A case is described that demonstrates retinal vessel changes and suggests the favorable effects of hemodialysis to treat pathology in a patient with primary systemic nonfamilial amyloidosis. A 47-year-old woman diagnosed as having primary systemic nonfamilial amyloidosis at the age of 30 years had linear and dot hemorrhage, venous dilatation, and tortuosity in the right eye. Fluorescein angiography revealed low-density amorphous areas in the walls of dilated veins near the optic disc. These findings diminished with hemodialysis.
[Ophthalmic Surg Lasers Imaging 2003;34:321–323.]
An Unusual Intraocular Foreign Body
Authors: Romano Antonio , Rosa Nicola , Bifani Mario , Corte Michele Della , Iaccarino Gennarfrancesco
Published: August 2021

An unusual foreign body in a 60-year-old man with ocular siderosis is described. A surgical needle was found in the eye after magnetic resonance imaging was performed for cerebral ischemia. As a general precaution in patients who have undergone any kind of surgery, it might be better to perform a plain x-ray before performing magnetic resonance imaging to identify such foreign bodies.
[Ophthalmic Surg Laser Imaging 2003;34:348–349.]
Influence of fly ash, glass fibers and wastewater on production of recycled aggregate concrete
Authors: Raza A. , Ali B. , Haq F.U. , Awais M. , Jameel M.S.
Published: August 2021

To encounter the issues of waste materials, low tensile strength of concrete and environmental impacts of cement production, research is needed to develop a sustainable concrete. This study has endeavored to investigate the effects of using recycled coarse aggregates (RCA), various types of wastewater effluents, fly ash, and glass fibers on the mechanical and durability behavior of recycled aggregate concrete (RAC) incorporating with fly ash and glass fibers (FGRAC). Six different kinds of wastewater effluents for the mixing of concrete, 100% replacing the natural coarse aggregates with RCA, and 30% replacement of cement with fly ash were used for the development of concrete. The experimental measurement portrayed that the textile factory effluent presented the highest compressive and tensile strengths of concrete. Fertilizer factory effluent portrayed the highest water absorption, mass loss due to acid attack, and chloride penetration to concrete.
Entre produção, circulação e apropriação
Authors: Pinheiro Nara Vilma Lima
Published: August 2021

Por meio da reconstituição da trajetória profissional de Carleton Wolsey Washburne, este estudo procurou evidenciar as circunstâncias de produção suas ideias educacionais. Ao procurar saber mais sobre sua trajetória e suas ações educacionais, importantes redes de comunicação se revelaram, evidenciando que suas ações não foram isoladas, mas entrelaçadas a redes internacionais, cujos discursos e práticas foram incorporados por indivíduos e instituições adeptas da Éducation Nouvelle defendida pela New Education Fellowship [NEF]. De modo específico, interessa saber quais ideias de Washburne, os periódicos fundadores da NEF, fizeram circular internacionalmente. Para tanto, essa pesquisa se insere no campo da História da Educação e da História Cultural, utiliza-se da análise documental amparando-se nos estudos de Michel de Certeau e Peter Burke. Os resultados evidenciaram que a circulação das ideias de Washburne, via publicações da NEF, não privilegiou o conjunto de sua obra, mas os materiais autoinstrucionais, em especial os referentes ao ensino de aritmética.
Educação museal e produção de memórias
Authors: Farias Júnior José Petrúcio
Published: August 2021

O artigo discorre sobre a construção de memórias construídas pelo público-visitante a partir da narrativa museal, produzida pelo Museu Ozildo Albano (Picos/Piauí) e seus possíveis usos para o ensino de história. Para isso, faremos uso, de um lado, das representações sobre o passado veiculadas por essa instituição cultural; de outro, analisaremos as percepções de estudantes universitários que o visitaram. Sob esta ótica, relacionaremos o papel do museu ao âmbito da memória cultural, por meio da qual enfatizaremos a constituição da ‘memória protética’, tal como idealizada por Alison Landsberg (2009).
Thermodynamic Analysis of Siderite Ore Carbonate Decomposition Process at Roasting
Authors: Yur'ev Boris P. , Dudko Vyacheslav A.
Published: August 2021

Carbonate decomposition with significant heat energy absorption takes place at siderite ore oxidizing roasting in a shaft furnace. Thermal dissociation of complex carbonates comprising the siderite ore was studied. Thermodynamic analysis was carried out for a sideroplesite decomposition process. Formulas allowing determination of the carbonate dissociation and exchange energy rates were obtained using the regular ion solution theory. The ion composition and thermodynamic activity simulation results were described for sideroplesites as well as iron and magnesium cation shares. The work output is of certain interest as knowing the initial sideroplesite decomposition temperature and the carbonate dissociation rate the optimal dimensions of various zones throughout the shaft furnace height may be defined, the roasting process time may be calculated and the optimal heat treatment conditions as well as the firing rate may be established.
The Degassing Laws for Railway Wheel Steel in a Vacuum Tank Degasser
Authors: Smirnova Elizaveta A. , Eliseeva Irina A. , Shapovalov Aleksey N.
Published: August 2021

The research presents the results of data analysis on degassing of wheel grades of steels in a tank degasser with a capacity of 120 tons, operated at the JSC “Ural Steel”. The volume of the analyzed sample included 754 steels for railway wheels (steel grades “2” and “T” according to State standard GOST 10791-2011) weighing more than 80 thousand tons received in November-December 2019.It was established that in order to guarantee the production of hydrogen content of less than 1.5 ppm and nitrogen before 0.007%, it is necessary to carry out vacuum treatment of metal with overheating of 110-130°C at the residual pressure of up to 3 mbar for 20-25 minutes and argon flow rate of at least 0.05 m3/ton. The regression equation was obtained, which allows to predict the results of degassing, as well as select the values of vacuum treatment parameters in order to achieve a given content of dissolved gases - hydrogen and nitrogen.
Effect of Basicity and Boron Oxide in Slags of the AOD Process on the Equilibrium Interphase Distribution of Sulfur and Boron
Authors: Babenko Anatolij A. , Shartdinov Ruslan R. , Upolovnikova Alena G.
Published: August 2021

The use of fluorspar in modern metallurgical slags, incl. slags of the argon-oxygen decarburization (AOD) process, as a fluxing agent, is associated with many disadvantages. Those disadvantages can be solved by using boron oxide as an alternative, which also provides conditions for direct microalloying of steel with boron. The paper presents the results of thermodynamic modeling of the effect of basicity and boron oxide content in slags of the CaO–SiO2–B2O3–Cr2O3–Al2O3–MgO system on the equilibrium interphase distribution of sulfur and boron, and their equilibrium content in the metal. Modeling was carried out using the HSC 8.03 Chemistry software package (Outokumpu). Slag from the desulfurization period of the AOD-process was used as the oxide phase. As a result, it was shown that, in the range of basicities 2.0-2.5 and a content of 2-4% B2O3, it is possible to carry out desulfurization of the metal, providing a sulfur content of 0.001-0.007%, and simultaneous microalloying of steel with boron in an amount of up to 0.0103%.
Nickel Sorption from Sulphate Solutions of Oxidized Nickel Ores Leaching
Authors: Makovskaya Olga Yu. , Bryantseva Nadezhda I.
Published: August 2021

The possibility of sorption extraction of nickel from leaching solutions of oxidized nickel ores of the Buruktal deposit is considered. Ionite Lewatit TP220 with bis-picolylamine functional groups is effective for nickel recovery against the background of high iron contents. Lewatit TP220 is mechanically strong enough for use in the resin-in-pulp process. Nickel sorption with satisfactory performance occurs both in the variant of sorption leaching and extraction from clarified solutions. At sorption from the pulp, the capacity for nickel was 5.44 mg/g, for iron, 25.17 mg/g. The use of 20% sulfuric acid provides quantitative nickel desorption. To obtain a higher quality nickel-containing product, it is recommended to additionally purify the resulting eluates from iron.
Fine Copper Powders Production
Authors: Agarova Natalia E. , Yakovleva Lyubov M. , Voinkov Roman S. , Timofeev Konstantin L.
Published: August 2021

The article is devoted to the description of a method for producing electrolytic copper powder with an average particle size of 3 to 10 μm. In order to increase the proportion of the finely dispersed fraction during the electrolysis process, the composition of the electrolyte was changed. In particular, the content of chloride ions was increased from 6 to 53 mg/dm3. After the growth of the powder in industrial baths, its subsequent drying and sieving on vibrating screens, samples were obtained with a fraction of 5 μm content in the range from 3 to 38 %. Additionally, air classification of powders was carried out at various speeds of the classifier rotor from 800 to 2000 rpm. Based on the results of the study, the optimal ranges of the specific surface area and the size of the initial powder particles before classification, as well as the composition of the electrolyte and the operating modes of the classifier, were determined.
Sacrificial Protection Efficiency Calculations Based on the Results of Stochastically Simulating the Parameters
Authors: Vinogradova Svetlana S. , Tazieva Ramilya F. , Akhmetova Anna N.
Published: August 2021

Unique corrosion conditions in oil refining processes lead to the necessity of using passive and active protection systems, aimed at preventing from damages and ensuring the correct operating conditions of machines. To prevent from the development of corrosion processes on the internal surfaces of horizontal settlers, sacrificial protection is used. Before installing such a protection, they usually calculate the number of protectors to be installed in parallel. Some inputs are stochastic by their nature, which should be considered in assessing the risk of non-achieving the required protection level. The probabilistic model proposed to calculate the parameters of sacrificial tank protection that allows performing an exploratory design based on considering various environmental aspects to decide on the efficiency of sacrificial protection and to assess the achievement of the required protection level.
The Usage of Modern Inorganic Composite Material in the Design of Insulation of Unheated Smoke-Free Stairwells
Authors: Burlachenko Oleg V. , Chesnokova Oksana G. , Cherednichenko Tatiana F.
Published: August 2021

The article describes the problems that arise during the operation of unheated, smoke-free stairwells in multi-storey residential buildings. Measures are proposed for thermal protection of premises adjacent to stairwells of the H1 type. To solve the problems of improving the energy efficiency of the building, it is proposed to use modern thermal insulation material. In addition, a constructive solution is proposed for the insulation of the internal walls of an unheated, smoke-free stairwell using foam glass, which will ensure the strength, durability and reliability of thermal protection and finishing. Using modern composite materials, it is possible to improve the energy efficiency of the building.
To Problem of Filler Failure in Processing of Fiber-Reinforced Materials
Authors: Lapshina Svetlana V.
Published: August 2021

Filled polymers seem very promising materials for production. Polymers can be filled with a variety of diverse materials, be it polycaprolactam fiber, glass fiber, or steel wire. Compared to their non-filled counterparts, filled composites have a number of advantages. Production of filled polymers can be challenging due to the processing equipment (the rubber mixer, rollers, and extruders) mixing the fiber with the polymer matrix. In their purest form, polymers mostly don’t have the desired properties, which is why special additives (fillers, plasticizers, dyes, stabilizers, etc.) must be added to obtain the desired functional properties. This is why composites account for an ever greater share of polymers.