bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of Polydopamine Microspheres Loaded with Silver Nanoparticles on Lolium multiflorum: Bigger Size, Less Toxic
Authors: Wang Xinrui , Luo Hongyong , Zheng Weihua , Wang Xinling , Xiao Haijun , Zheng Zhen
Published: June 2021

The rapid development of nanotechnology and its widespread use have given rise to serious concerns over the potential adverse impacts of nanomaterials on the Earth’s ecosystems. Among all the nanomaterials, silver nanoparticles (AgNPs) are one of the most extensively used nanomaterials due to their excellent antibacterial property. However, the toxic mechanism of AgNPs in nature is still unclear. One of the questions under debate is whether the toxicity is associated with the size of AgNPs or the silver ions released from AgNPs. In our previous study, a sub-micron hybrid sphere system with polydopamine-stabilized AgNPs (Ag@PDS) was synthesized through a facile and green method, exhibiting superior antibacterial properties. The current study aims to explore the unique toxicity profile of this hybrid sphere system by studying its effect on germination and early growth of Lolium multiflorum, with AgNO3 and 15 nm AgNPs as a comparison. The results showed the seed germination was insensitive/less sensitive to all three reagents; however, vegetative growth was more sensitive. Specifically, when the Ag concentration was lower than 40 mg/L, Ag@PDS almost had no adverse effects on the root and shoot growth of Lolium multiflorum seeds. By contrast, when treated with AgNO3 at a lower Ag concentration of 5 mg/L, the plant growth was inhibited significantly, and was reduced more in the case of AgNP treatment at the same Ag concentration. As the exposures of Ag@PDS, AgNO3, and AgNPs increased, so did the Ag content in the root and shoot. In general, Ag@PDS was proven to be a potential useful hybrid material that retains antibacterial property with light phytotoxicity.
Direct Comparison of the Lowest Effect Concentrations of Mutagenic Reference Substances in Two Ames Test Formats
Authors: Rainer Bernhard , Pinter Elisabeth , Prielinger Lukas , Coppola Chiara , Marin-Kuan Maricel , Schilter Benoit , Apprich Silvia , Tacker Manfred
Published: June 2021

The Ames assay is the standard assay for identifying DNA-reactive genotoxic substances. Multiple formats are available and the correct choice of an assay protocol is essential for achieving optimal performance, including fit for purpose detection limits and required screening capacity. In the present study, a comparison of those parameters between two commonly used formats, the standard pre-incubation Ames test and the liquid-based Ames MPF™, was performed. For that purpose, twenty-one substances with various modes of action were chosen and tested for their lowest effect concentrations (LEC) with both tests. In addition, two sources of rat liver homogenate S9 fraction, Aroclor 1254-induced and phenobarbital/β-naphthoflavone induced, were compared in the Ames MPF™. Overall, the standard pre-incubation Ames and the Ames MPF™ assay showed high concordance (>90%) for mutagenic vs. non-mutagenic compound classification. The LEC values of the Ames MPF™ format were lower for 17 of the 21 of the selected test substances. The S9 source had no impact on the test results. This leads to the conclusion that the liquid-based Ames MPF™ assay format provides screening advantages when low concentrations are relevant, such as in the testing of complex mixtures.
The Search for Natural and Synthetic Inhibitors That Would Complement Antivenoms as Therapeutics for Snakebite Envenoming
Authors: Gutiérrez José María , Albulescu Laura-Oana , Clare Rachel H. , Casewell Nicholas R. , Abd El-Aziz Tarek Mohamed , Escalante Teresa , Rucavado Alexandra
Published: June 2021

A global strategy, under the coordination of the World Health Organization, is being unfolded to reduce the impact of snakebite envenoming. One of the pillars of this strategy is to ensure safe and effective treatments. The mainstay in the therapy of snakebite envenoming is the administration of animal-derived antivenoms. In addition, new therapeutic options are being explored, including recombinant antibodies and natural and synthetic toxin inhibitors. In this review, snake venom toxins are classified in terms of their abundance and toxicity, and priority actions are being proposed in the search for snake venom metalloproteinase (SVMP), phospholipase A2 (PLA2), three-finger toxin (3FTx), and serine proteinase (SVSP) inhibitors. Natural inhibitors include compounds isolated from plants, animal sera, and mast cells, whereas synthetic inhibitors comprise a wide range of molecules of a variable chemical nature. Some of the most promising inhibitors, especially SVMP and PLA2 inhibitors, have been developed for other diseases and are being repurposed for snakebite envenoming. In addition, the search for drugs aimed at controlling endogenous processes generated in the course of envenoming is being pursued. The present review summarizes some of the most promising developments in this field and discusses issues that need to be considered for the effective translation of this knowledge to improve therapies for tackling snakebite envenoming.
Detection of Q129H Immune Escape Mutation in Apparently Healthy Hepatitis B Virus Carriers in Southwestern Nigeria
Authors: Adesina Olufisayo Adeyemi , Akanbi Olusola Anuoluwapo , Opaleye Oluyinka Oladele , Japhet Margaret Oluwatoyin , Wang Bo , Oluyege Adekemi Olubukunola , Klink Patrycja , Bock C.-Thomas
Published: June 2021

As the global effort to eradicate hepatitis B continues, immune escape mutations (IEMs) and drug resistance mutations (DRMs) affecting its diagnosis, treatment, and prevention are compromising this goal. However, knowledge about the prevalence and circulation of these mutations in Nigeria is scarce. Serum samples (n = 199) from apparently healthy prospective blood donors, pregnant women, and individuals presenting with fever in southwestern Nigeria were analyzed for the presence of IEMs and DRMs by means of nested PCR in the HBV S (HBs) and HBV polymerase (Pol) genes, followed by phylogenetic and mutational analyses. In total, 25.1% (n = 50/199) of samples were positive for HBV, as measured by PCR. In 41 samples (20.6%), both fragments could be amplified, whereas the HBs gene and the Pol gene fragment alone were detected in 0.5% (n = 1/199) and 4% (n = 8/199) of samples, respectively. Sequences were successfully obtained for all 42 HBs gene fragments but for only 31/49 Pol gene fragments (totaling 73 sequences from 44 individuals). All sequences were identified as HBV genotype E. IEMs were present in 18.2% (n = 8/44) of the sequences of HBV-positive individuals with available sequences. IEM Q129H was detected in eight out of the 44 (18.2%) HBV isolates sequenced in this study; however, no DRMs were observed. This study confirms the circulation of HBV IEMs and reports the presence of Q129H IEM for the first time in Nigeria. Intensified research on the dynamics of IEM is necessary in order to enhance the elimination of HBV.
Serological Response in Lung Transplant Recipients after Two Doses of SARS-CoV-2 mRNA Vaccines
Authors: Narasimhan Madhusudhanan , Mahimainathan Lenin , Clark Andrew E , Usmani Amena , Cao Jing , Araj Ellen , Torres Fernando , Sarode Ravi , Kaza Vaidehi , Lacelle Chantale , Muthukumar Alagarraju
Published: June 2021

Background: Lung-transplant (LT) recipients are at high risk for COVID-19 due to immunosuppression and respiratory tropism of SARS-CoV-2. The information on the effect of COVID-19 mRNA vaccines to elicit immunogenic responses after a two-dose (2D) regimen in LT recipients is sparse. Thus, we assessed the effect of Pfizer-BioNTech and Moderna mRNA vaccines’ 2D regimen on anti-spike responses in immunocompromised LT recipients. Methods: We utilized serum samples from LT recipients vaccinated for SARS-CoV-2 with 2D of either the Pfizer-BioNTech or Moderna vaccines and 2D-vaccinated naïve (non-transplanted and non-exposed to COVID-19) group. Antibody responses were assessed using the FDA-approved SARS-CoV-2 anti-nucleocapsid protein IgG assay (IgGNC), the SARS-CoV-2 anti-spike protein IgM assay (IgMSP), and the SARS-CoV-2 anti-spike protein IgG II assay (IgGSP). CD4+ T-cell activity was assessed as a marker of immune competence using the ImmuKnow® assay. Results: About 25% (18/73) of SARS-CoV-2 uninfected-LT patients generated a positive spike-IgG response following 2D of vaccines, with 36% (9/25) in the Moderna cohort and only 19% (9/48) in the Pfizer cohort. 2D in LT patients elicited a significantly lesser median IgGSP response (1.7 AU/mL, 95% CI: 0.6–7.5 AU/mL) compared to non-transplanted, uninfected naïve subjects (14,209 AU/mL, 95% CI: 11,261–18,836 AU/mL; p < 0.0001). In LT patients, the Moderna-evoked seropositivity trend was higher than Pfizer. Conclusion: 2D COVID-19 vaccination elicits a dampened serological response in LT patients. Whether assessing other arms of host immunity combined with a higher vaccine dose can better capture and elicit improved immunogenicity in this immunocompromised population warrants investigation.
Effects of Drip Irrigation Design on a Lemon and a Young Persimmon Orchard in Semi-Arid Conditions
Authors: Parra Margarita , Hortelano David , García-Sánchez Francisco , Intrigliolo Diego S. , Rubio-Asensio José S.
Published: June 2021

Drip irrigation is presently widely recognized as the most efficient irrigation system that can be used in woody perennial crops. However, uncertainties exist on the more appropriate agronomic design to employ. Here, we summarized the research carried out for three seasons in two young woody perennial crops (persimmon and lemon) in southeastern Spain. Several irrigation designs were compared by maintaining a similar amount of water application but varying the number of emitters and pipelines in each row in the orchard. In the lemon trial, the agronomic irrigation design was additionally combined with different irrigation regimes, comparing full irrigation (FI) with sustained deficit irrigation (SDI). In the persimmon trees, which were still at the juvenility stage, varying the number of emitters per tree or the number of drip lines per tree row, neither affects tree performance nor fruit yield in two out of the three seasons. However, over the entire experimental period, the relative trunk growth increased when more emitters were employed. In the lemon trial, carried out with trees that had reached commercial production, the FI, compared with SDI, increased trunk growth and average fruit weight, while a reduced number of fruits per tree without affecting total yield was observed in the third year of experimentation. The number of emitters per tree only had an effect the first year, increasing lemon fruit weight when the number of drippers per tree increased. In addition, fruit composition was not consistently affected by the irrigation design. It is concluded that, for a given irrigation dose, irrigation frequency, and soil conditions (loam-clay texture), in both very young and more mature trees, increasing the number of emitters or the wetted area only had some slight positive effects on tree performance.
Depth–Sequential Investigation of Major Ions, δ18O, δ2H and δ13C in Fractured Aquifers of the St. Lawrence Lowlands (Quebec, Canada) Using Passive Samplers
Authors: Meyzonnat Guillaume , Barbecot Florent , Corcho Alvarado José , Pinti Daniele Luigi , Lauzon Jean-Marc , McCormack Renald
Published: June 2021

General and isotopic geochemistry of groundwater is an essential tool to decipher hydrogeological contexts and flow paths. Different hydrogeochemical patterns may result from the inherent physical aquifer heterogeneity, which may go unnoticed without detailed investigations gathered from multilevel or multiple observation wells. An alternative to overcome the frequent unavailability of multiple wellbores at sites is to perform a detailed investigation on the single wellbore available. In this perspective, the aim of this study is to use passive samplers to sequentially collect groundwater at depths in long–screened wellbores. Such investigation is carried out for major ions and stable isotopes compositions (δ2H, δ18O, δ13C) at ten sites in the context of fractured carbonate aquifers of the St. Lawrence Lowlands (Quebec, Canada). The information gathered from the calco–carbonic system, major ions and stable isotopes report poorly stratified and evolved groundwater bodies. Contribution of water impacted by anthropogenic activities, such as road salts pollution and carbon sources from C4 vegetation, when they occur, are even observed at the greatest depths. Such observations suggest quick flow paths and efficient mixing conditions, which leads to significant contributions of contemporary groundwater bodies in the fractured aquifers investigated down to depths of about 100 m. Although physical aquifer investigation reported few and heterogeneously distributed fractures per wellbore, hydrogeochemical findings point to at overall well interconnected fracture networks in the aquifer and high vulnerability of groundwater, even at significant depths.
Optimization of periodontal disease diagnosis by the results of clinical laboratory tests
Authors: Al-Qufaish M.A.M. , Usmanova I. N. , Tuigunov M. М. , Khusnarizanova R. F. , Gumerova M. I. , Shangareeva A. I.
Published: June 2021

Relevance. The authors have established that the microbiological and local risk factors prevail in changing the clinical condition of the periodontium. Aim – сlinical and diagnosis argumentation of the gingival tissue condition according to the criteria of the New International Classification of Periodontal and Peri-implant Diseases and Conditions and Proceedings of the 2017 World Workshop jointly held together by the American Association of Periodontology (AAP) and the European Federation of Periodontology (EFP).

Materials and methods. Clinical and laboratory assessment of 105 young patients was conducted. Three patient groups were formed according to the detected risk factor and according to the data of the New International Classification of Periodontal and Peri-implant Diseases and Conditions. The main group consisted of 70 (66.6%) patients with diagnosed chronic plaque-induced gingivitis (33.3%) and initial periodontitis (33.3%) (mild chronic periodontitis). The control group comprised 35 patients with clinically healthy gingiva on an intact periodontium (71.1%) and reduced periodontium (22.9%). Periodontal pathogens as a risk factor were assessed by PCR using DNA-express commercial sets (Liteh, LLC, scientific manufacturing company, Russia). Cytology of the gingival crevicular fluid impression smears stained by Romanovsky-Giemsa method was performed.

Results. Changes in the hygiene and periodontal indices were revealed on full dental examination. PCR detected low or critical number of periodontal pathogens in the studied samples. Neutrophilic leukocytes, histiocytes and epithelial cells were present in the impression smears, polymorphonyclear neutrophils significantly increased and macrophages, histiocytes, epithelial cells appeared; macrophages decreased.

Conclusion. Full dental examination and laboratory tests revealed the following clinical conditions: clinically healthy gingiva on an intact periodontium, clinically healthy gingiva on a reduced periodontium, plaque-induced gingivitis, stage I periodontitis – initial periodontitis, which corresponded to the New International Classification of Periodontal and Peri-Implant Diseases and Conditions and Proceedings of the 2017 World Workshop held by the American Academy of Periodontology (AAP) and the European Federation of Periodontology (EFP).
Research on a method for diagnosing clogging faults and longitudinal axial flow in the threshing cylinders of drum harvesters
Authors: Wang Suzhen , Lu Baochun , Cao Jingran , Shen Mengwei , Zhou Caiqiu , Feng Yi
Published: June 2021

Here we present a high-precision method for predicting threshing drum clogging in drum harvesters, with strong applicability for longitudinal axial flow in crawlers. This method can be used to determine the alarm threshold. It entails placing a wireless vibration sensor at the outer
end of the rotary shaft of the harvester to collect axial vibration signals from the drum to detect early fault characteristics. The method employs the Hilbert-Huang transform-analysis method to obtain time-frequency spectrum characteristics of the blocking process, thus diagnosing the speed
reduction necessary to shut down when the threshing drum is clogged. The traditional method of extracting fault characteristic frequency by Fourier transform is compared with the proposed method. This method can not only diagnose the critical value of the rotating speed when the drum is clogged
but also accurately and clearly reflect the trend of the drum clogging fault. The fault is within 3 standard deviations above or below the mean characteristic frequency, and abnormality is within 1 standard deviation above or below the mean characteristic frequency. Based on our experimental
analysis, we introduce the concept of the confidence interval, andwe consider crop type and the diversity of working conditions. The proposed method improves the adaptability of forecasting to specific environments and combines agricultural machinery with agronomy. The trend of blocking can
be predicted at least 1 s in the early stage of blockage by using a sliding window to process the vibration data collected in real time. This predictive ability makes the method superior to speed-sensor analysis in precision
Community-Based Cobia, Rachycentron canadum (Linnaeus, 1766) Culture in Open Sea Cages at Olaikuda, Pamban Island, India: An Economic Analysis of Technology Transfer Initiative
Authors:   Marine Biotechnology, National Institute of Ocean Technology, Ministry of Earth Sciences, Government of India, Pallikaranai, Chennai 600100, Tamil Nadu, India, RAJAPRABHU G. , KIRUBAGARAN R. , SURESHKUMAR C. , SANTHANAKUMAR J. , RASHEEDA M.K. , SENDHIL KUMAR R. , DHARANI G.
Published: June 2021

The Olaikuda Village of Pamban Island was chosen to demonstrate and transfer the open sea cage culture technology of cobia by the National Institute of Ocean Technology (NIOT). Olaikuda is a fishing hamlet with 1,000 traditional fishers who are primarily involved in trap fishing. An attempt was made to supplement their income under the societal development initiative of the NIOT. With the active participation of the local fishers of Olaikuda, 3,000 hatcheryproduced cobia, Rachycentron canadum (Linnaeus, 1766) fingerlings were stocked equally in two cages with a stocking density of 4.7 fingerlings.m-3 . The cobia stocked in sea cages were reared with the locally available low-value fishes for 8 months. The sea farmed cobia attained an average weight of 3.3 kg resulting in an average daily growth rate of 13.5 g with a survival rate of 75 %. The fish were harvested on the 245th day of culture, which yielded 7,000 kg of marketable size cobia fish (1st cage 3,687 kg and 2nd cage 3,313 kg with an FCR of 1:5.5). The harvested fish were sold at the farm gate price of USD4.42 kg-1 , fetched USD30911.84. The economic analysis revealed a profit margin of USD1.26 kg-1 . The parameters such as cost of production, productivity, profitability, socio-economic impacts of native fishers were analysed during the study. The result of this farmer-driven attempt is encouraging the farmers across the coastal states to do cage culture farming in a big way. Similar efforts in more organised massive programs will create new jobs and reduce the fishing pressure on the natural sea stocks and considered a viable alternative livelihood for the fishers’ community affected by the declining natural fishery resources and international border issues.
Legal aspects of the cryptoassets market and its possible threats to the national security of Ukraine and Poland
Authors: Kostenko Svitlana Oleksiivna , Strilchuk Vitalii Ananijovych , Chernysh Roman Fedorovych , Buchynska Anna Josypivna , Fedoronchuk Andrii Volodymyrovych
Published: June 2021

The article studies the mainstreaming of the crypto assets’ market legal regulation on the example of Ukraine and Poland. Specifically, the notions “crypto currency” and “virtual currency” are analyzed. On the basis of dialectical method and of critical analysis of research literature, regulatory legal acts, etc. the impropriety of the stated notions’ use is proved, especially as concerns the legislative level; the specifics of the stated categories’ legal status is defined; the necessity and practicality of special regulatory legal acts approval in this sphere on the level of Ukraine and Poland is determined, for effective rights’ exercising of the corresponding relations participants, including constitutional rights.

Simultaneously, the article provides the grounds for inacceptability of adoption by Ukraine and Poland of the crypto assets’ market development by means of impelementation of varios benefits (preferences) for this market participants, because this can threaten the ecological, energy, information, and in total, national security of the given states.
Николай Николаевич Диков - организатор археологических исследований на Северо-Востоке России
Authors:   North-East Interdisciplinary Scientific Research Institute n. a. N. A. Shilo, FEB RAS, Magadan, Lebedintsev A. I.
Published: June 2021

The article presents data on the scientific and organizational activities of the Head of the NEISRI Laboratory of Archeology, History, and Ethnography, Doctor of Historical Sciences, Professor, Corresponding Member of the Russian Academy of Sciences N. N. Dikov as well as on the creation of the North-East Asian Complex Achaeological Expedition (NEACAE) and the results of archaeological research performed by its detachments. N. N. Dikov's important contribution to the organization of archaeological research in the North-East Russia and his achievements in the study of ancient cultures are noted. The NEACAE formation contributed to a greater coverage of the territory of the north of the Far East by archaeological research, the discovery of a significant number of archaeological sites in Chukotka, Kamchatka, Kolyma, and on the Okhotsk coast.
Expa nsion of the functional of the client-server subsystem of distributed design of VLSI
Authors:   Southern Federal University, Glushan V.M.
Published: June 2021

Reducing the time for multiplying matrices of large dimensions is an urgent task, since it finds application in many application areas. One of the ways to solve it is distributed computing based on the use of client-server architectures. The article proposes to expand the functional capabilities of an earlier developed subsystem for distributed design of VLSI, also built using a client-server architecture (CSA). Based on the formulated fundamental principles of dividing matrices into blocks depending on a given number of processors, a partitioning algorithm has been developed and an estimate of its complexity has been given. The results of simulation modeling of multiplication of matrices of large dimensions are presented, which confirmed the possibility of expanding the KSA functional for distributed design of VLSI.
Generalized solution to the problem of reconstructing the graph structure based on the transfer function matr ix
Authors:   Southern Federal University, Tselykh A. N. , Vasilev V.S. , Tselykh L. A. ,   Taganrog Institute named after A.P. Chekhov (branch) of the Rostov State Economic University
Published: June 2021

This study presents a generalized solution to the problem of restoring the structure of a graph based on the method of minimizing the transfer matrix norm, consistent with the Euclidean vector norms, with a minimum and extended set of constraints. The problem of complete reconstruction of the adjacency matrix, in the presence of pairs of vectors of exogenous and endogenous influences, expressing the intrinsic resonance properties of the network, and positive semidefinite constraints on the matrix of variables, is a generalization of the problem of reconstructing the structure of a graph from the eigenvalues of the Laplace matrix.
Axiomatics of the semantic approach for the problem of representing the specification of an information model as a set of related parts of semantic groups
Authors:   Institute of Computer Technologies and Information Security of the Southern Federal University, Lapshin V.S. , Rogozov Y.I. , Egorov A.V.
Published: June 2021

The work implements a semantic approach to constructing formal models of systems. The problem of formalizing the processes of representing input and output documents in the form of semantic groups is solved. The organization of communication within the input and output semantic groups, as well as the transformation of input into output is considered. In the course of the study, the properties of parts of semantic groups were formed, which are described by statements, formally defined as predicates. Rules for the transition from semantic groups to a formal representation of the specification of an information model as a set of related parts of semantic groups are given.
Using fuzzy gh-models to represent the complex technical systems
Authors:   Computer Technologies and Information Security, Southern Federal University, Muntyan E. R.
Published: June 2021

to representation the complex technical systems, we propose the use of fuzzy GH-models based on graphs, which differ from known that allow to take into account, in addition to the same type of edges, different types of edges and multiple edges in the form of a vector. The paper notes the advantages of GH-graphs due to the use of edges in the form of a vector, which reduces the time spent on calculations on graphs and at the same time takes into account the necessary relations in the system. The classification of edges in GH-graphs is performed, due to the need to use all possible relations between the objects of the system.
Modified algor ithm for searching regularities in large dimensional data based on genetic optimization
Authors:   Southern Federal University, Bova V.V. , Leshchanov D.V.
Published: June 2021

A method of searching for patterns in sequences of events is proposed for detecting hidden patterns in largedimensional data when performing information retrieval tasks, based on the theory of sequential patterns. Searching for sequential patterns is a complex computational task whose goal is to retrieve all frequent sequences representing potential relationships within elements from a transactional database of sequences of search activity events with a given minimum support. To increase the computational efficiency of the method, a modified algorithm for generating sequential patterns has been developed, at the first stage of which AprioriAll is performed, which forms frequent candidate sequences of all possible lengths, and at the second stage, a genetic algorithm for optimizing the input parameters of the feature space of the generated set to search for maximum patterns.
Controlling the movement of a group of mobile robots in a column
Authors:   Institute of Computer Technology and Information Security of SfedU, Veselov G.E. , Lebedev B.K. , Lebedev O.B.
Published: June 2021

The work solves the problem of managing a team of robots, which ensures the movement of a team of robots in a column. Management is carried out using an alternative collective adaptation algorithm based on the ideas of the collective behavior of adaptation objects. To implement the adaptation mechanism, the parameters of the vector are compared to the adaptation automata, a, which simulate the behavior of adaptation objects in the environment. The structure of the process of alternative collective adaptation has been developed, under the control of which the movement of a group of robots in a formation is carried out.
Threats model of information and technical interac tion in the integrated information protection system
Authors:   Saint-Petersburg university of state fire service of EMERCOM of Russia, Buinevich M.V. , Pokussov V. V. ,   Kazakhstan Information Security Association, Izrailov K.E. ,   Bonch-Bruevich Saint-Petersburg state university of telecommunications,   St. Petersburg Federal Research Center of the Russian Academy of Sciences
Published: June 2021

The article describes a model of threats arising from information and technical interaction between subsystem modules after their integration into a unified information protection system. The terminological base used in this subject area is defined. An ontological model is given that determines the relationship between the basic concepts. A description of the six main threats of interaction that make up the model is given, indicating the following characteristics: the source of the threat’s vulnerability, the method of its implementation, the object of the attack, the consequences of implementation in terms of violation of internal information security and damage to the performance of the integrated information protection system. The differences of this model from the typical ones used in organizations are given.
El análisis FODA del voto electrónico y perspectivas de futuro
Authors: Berbotto J. Angelo
Published: June 2021

Las nuevas tecnologías aplicadas a los procesos electorales ya están en uso desde hace unos treinta años. Sin embargo, no se constata su uso masivo. El análisis FODA de dichas tecnologías es una herramienta para revelar las razones de esto y valorar las perspectivas de futuro del voto electrónico
El rol de las autoridades electorales en las elecciones generales
de Estados Unidos 2020: entre los desafíos de la pandemia y
los intentos de deslegitimación del proceso electoral
Authors: Benavides Santos Tatiana
Published: June 2021

Analiza las principales tendencias de las elecciones presidenciales en Estados Unidos. Estudia los factores que permitieron el desarrollo de la elección que se percibía de riesgo en términos de seguridad, integridad e inclusión en el marco de la pandemia y la injerencia de la administración Trump. Centra su análisis en el rol de las autoridades electorales en la administración de los comicios, específicamente su papel en la conducción del ciclo electoral frente a los desafíos presentados, con el fin de establecer los elementos que contribuyen a determinar el grado de integridad del proceso electoral.
Imposibilidad de exigir un pagaré o letra de cambio para
garantizar el cumplimiento de obligaciones económicas futuras
con los partidos políticos, como requisito de postulación
Authors: Alfaro Martínez Luis Fernando
Published: June 2021

Analiza la resolución n.° 5324-E8-2020 del 25 de setiembre de 2020 sobre la imposición de contribuciones económicas para miembros que desean inscribir su precandidatura, como un requisito de garantía de pago sobre cuotas futuras como un pagaré; lo que es una violación al ejercicio del derecho de participación política de las personas que deseen postularse a un cargo de elección popular
The effect of N-tetradecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate addition on washing properties of liquid laundry detergents
Authors: KALAK TOMASZ , GAŁKA ALEKSANDRA , WIECZOREK DARIA , CIERPISZEWSKI RYSZARD , PIEPIÓRKA-STEPUK JOANNA
Published: June 2021

The use of colorimetric analysis based on a CIELab system to determine detergency of commercial liquid laundrydetergents before and after modification with SB3C14 sulfobetaine (N-tetradecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate) is presented. The EMPA 101 standard cotton fabric soiled with carbon black and olive oil was usedin washing tests under the following conditions: temperature 40°C, rotational speed 200 rpm, 30 minute washing cycle,water hardness 5.35 mval/l, the concentration of liquid laundry detergents 1.25–50 g/l. The physicochemical analysis ofcolour, form, odour, pH, density, viscosity and content of anionic surfactants showed compliance with the manufacturers’declarations. The studies demonstrated that with increasing laundry detergent concentration a gradual increase indetergency occurred. At the highest tested concentrations of 50 g/L, detergency of 18.1% and 22.2% for cheaper L1 andmore expensive L2 products was achieved, respectively. Modification with the 5% addition of the zwitterionicsulfobetaine SB3C14 led to an improvement of the washing properties by 4.7% on average. At a concentration of 50 g/l,the modified L1 and L2 solutions demonstrated the highest detergency equal to 22.8% and 35.3%, respectively. Thisproves the existence of synergistic effect by the interaction of all ingredients in the solutions with higher concentrations.Microscopic analysis of EMPA 101 fabrics before and after washing processes showed no serious damage to the fibres,only the presence of slight fraying of individual ones. The results suggest that the SB3C14 sulfobetaine can besuccessfully used in liquid laundry detergents due to its very favourable surface properties
Design of the detecting platform for the electronic control rotary dobby
Authors: YIN HONGHUAN , YU HONGBIN , PENG JUNQIANG , SHAO HONGYU
Published: June 2021

In order to meet the factory detection requirements of the rotary electronic dobby, a new design of the detecting platformfor the rotary electronic dobby was proposed in the present study. It was composed with three main modules to meetthe different levels of detecting process all over the factory, including the embedded control system, human machineinterface system and the information management system. For the information management system of the dobbyworkshop, the proposed platform performed the remote management, results monitor, and data analysis to the dobbymanufactured at the factory. For the operators of the dobby detecting process, the human machine interface systemrealized the edit of pattern, the upload and download of the pattern data based through Wi-Fi, the control of motor speed,the test process record and the upload of the test results. Moreover, the embedded control system was developed andbuilt to realize the real-time control to electromagnet and swing arms of dobby according to the pattern stored in flashchip and status display of the detecting results on the platform. The designed detecting platform in this article can bewidely applied in the factory for detection of the rotary electronic dobby. The reliability and practicability of the proposedplatform have been confirmed by the practical application of the dobby manufacturing enterprise.
A study on detection of roving tension and fine control of yarn breakage
Authors: PENG CUI , YUAN XUE
Published: June 2021

The fine control of yarn breakage is essential for the production of better yarn quality by reducing the tension fluctuationof roving. The detection of roving tension provides important information regarding the yarn formation during spinning.In the present work, we developed a device for roving-tension detection and regulation, which greatly reduces the yarnbreakage rate and improves the production efficiency of ring spinning. By analysing the factors affecting the rovingtensions, we used a signal acquisition system in conjunction with the tension detection device to regulate the spindlerotate speed to realize the fine control of yarn breakage. Our results indicate that the proposed method can ensure auniform spinning tension of the yarn in ring spinning, which significantly reduces the yarn breakage rate, and boost theyarn production. Our work paves the way toward the rational production of high-quality yarn
Weltrichia magna sp. nov., a new record for the Middle Jurassic of Oaxaca, México
Authors: Guzmán-Madrid Diana Silvia , Velasco de León María Patricia
Published: June 2021

The Jurassic locality San Juan Mixtepec (Zorrillo Formation in the state of Oaxaca) contains fossil plants of the order Bennettitales, mainly of the genus Zamites, as well as reproductive structures of the genera Williamsonia, Williamsoniella and Weltrichia, but male reproductive structures of the latter genus are scarce and almost restricted to the south of Mexico; they have also been reported in the Triassic of the north of Mexico. Here we report a new record for this locality and a new species of male reproductive structure of the genus Weltrichia. We recovered half of an adpression in fine-grained sandstone with the positive and negative of the adaxial part of the male reproductive structure, which when open measures 22.6 cm in diameter. A reconstruction suggests the presence of ten centrifugal rays that become thinner towards the acute apex and are fused in a central basal cup. The structure exhibits complete centrifugal rays with basal structures that are interpreted as insertion sites for pollen sacs. We employed acetate peel, mechanical separation and hydrofluoric acid (HF) maceration techniques for extraction of anatomical samples. We compared 13 morphological and 10 anatomical characters with previous records from localities in México, Europe, Asia and other parts of the world. We observed epidermal cells and syndetocheilic stomatal apparatuses, which corroborate an epidermal affinity to the Bennettitales. This new record would be the largest male reproductive structure found in the region thus far, and increases the distribution of Weltrichia in the Jurassic of Oaxaca.
“Cotidianías” en América Latina actual: conceptos, géneros, contrastes
Authors: Devés Eduardo
Published: June 2021

El presente trabajo se ocupa de la aparición y consolidación de nuevas expresiones eidéticas en la realidad contemporánea. De este modo, se estudia un conjunto de “ismos” que pueden ser agrupados en la noción “cotidianía”, género (o especie) eidético que se distingue de ideologías, sistemas filosóficos, paradigmas científicos e “ideoglobías”, entre otros. Así, para dar cuenta de las “cotidianías”, se muestran tres casos de “purificación de la vida personal-cotidiana” presentes a comienzos del siglo xxi, describiendo sus nociones fundamentales, buscando similitudes y diferencias. La hipótesis a desarrollar consiste en que las cotidianías son expresiones eidéticas cuyo sentido se realiza en la posibilidad de mejorar la existencia en su dimensión cotidiana, asumiendo que ello es posible en el marco de lo individual, haciendo escasas o nulas referencias a la realidad socio-económico-política, aunque sin descartar dimensiones colectivas o comunitarias. Debe agregarse que la noción “mejorar la existencia” tiene en las cotidianías un sentido eminentemente psíquico-corporal, no económico, de ascenso social, ni menos de hegemonía —aunque todo ello tampoco se excluye, por principio—. Se argumenta además sobre la necesidad de abrir los estudios de las ideas hacia expresiones de lo eidético, poco consideradas por la comunidad de quienes estudian estos asuntos.
Aprendizaje tejido en Chaco, Argentina
Authors: Perret Myriam Fernanda
Published: June 2021

Se analizará el proceso de aprendizaje que atañe a tejedoras de tres colectivos de los pueblos wichi y qom, en las localidades de El Sauzalito, Misión Nueva Pompeya y Fortín Lavalle, y su relación con agentes de fomento artesanal y con tejedoras de las ciudades de Resistencia y Corrientes, en Argentina, aplicando el método etnográfico. La recolección de la información, en alternancia con periodos de sistematización y reflexión sobre el material reunido, transcurrió entre agosto de 2012 y agosto de 2018. Varios elementos participan en la fabricación de un tejido para vender. En la mezcla, la tejedora se involucra al punto de encontrarse en parte en ese tejido que hizo. Mirada, pensamiento, movimiento y sentir se destacan en este hacer, que a la vez que hace tejido hace a la tejedora. Y el propio paso a paso del tejer tiene una cualidad normativa que adelanta el tipo de forma a desarrollar, aunque no sin combinarse con una búsqueda, con un deseo.
The Boutet de Monvel operators in variable Hölder–Zygmund spaces on $\mathbb{R}^{n}_+$
Authors: Kryakvin V.D. , Omarova G.P.
Published: June 2021

We consider Green operators from the Boutet de Monvel algebra in the Hölder–Zygmund spaces of variable smoothness on $\overline{\mathbb R}^{n}_+$. The order of smoothness depends on a point in the domain and may take negative values. The sufficient conditions of boundedness of the Boutet de Monvel operators are obtained.
On the convexity of the reachable set with respect to a part of coordinates at small time intervals
Authors: Osipov I.O.
Published: June 2021

We investigate the convexity of the reachable sets for some of the coordinates of nonlinear systems with integral constraints on the control at small time intervals. We have proved sufficient convexity conditions in the form of constraints on the asymptotics of the eigenvalues of the Gramian of the controllability of a linearized system for some of the coordinates. There are two nonlinear third-order systems under study as examples. The system linearized along a trajectory generated by zero control is uncontrollable, and the system in the other example is completely controllable. We investigate the sufficient conditions for convexity of projection of reachable sets. Numerical modeling has been carried out, demonstrating the non-convexity of some projections even for small time intervals.
Numerical solution of the inverse boundary value heat transfer problem for an inhomogeneous rod
Authors: Sidikova A.I. , Sushkov A.S.
Published: June 2021

The article is devoted to solving an inverse boundary value problem for a rod consisting of composite materials. In the inverse problem, it is required, using information about the temperature of the heat flow in the media section, to determine the temperature at one of the ends of the rod. The paper presents a method of projection regularization, which made it possible to approximately estimate the error of the obtained solution to the inverse problem. To check the computational efficiency of this method, test calculations were carried out.
Science literacy and Stem. Who is the boss?
Authors: Kiryukhin M. M.
Published: June 2021

Science literacy, science popularization and STEM were analyzed as the structural elements on popular science landscape. Author considers audience, tools and other specific features for each of these elements. Modified definitions are suggested for simplification of further analysis. It was shown that starting from 21st Century science literacy and science popularization can be considered as two separate elements with different objectives and different audience. One more conclusion is the following. Public funding is the mandatory requirement for sustainable development of science literacy. The joint project was proposed for acceleration of World Organization on Science Literacy creation. The essence of this project is to create, print and distribute joint textbook “Create yourself by use your own tale” for increasing children creativity. The book should be adapted to the features of up to 10 countries.
Statistical analysis of the factors impeding innovations in Azerbaijani industry
Authors: Orkhan Zahit oglu Suleymanli
Published: June 2021

The main purpose of the study is the analysis of factors obstructing the implementation of the innovations in industrial sector of the Republic of Azerbaijan. The implementation of innovative approaches in production processes necessitates major costs and it creates the problem about their minimization. The paper deals with the analysis of the characteristics of various types of innovation and their acceptance by various industrial enterprises. Systematization of literary sources and approaches for the innovation implementation shows the deficiency of multifaceted solutions for this issue. In the study, various factors having effect on the innovation level of industrial companies were generalized. The paper summarized arguments and counterarguments on analysis of implementation of different types of innovation in industrial operations. The difficulties faced on the way of implementation of innovations, the reasons behind them and measures to deal with them have been analyzed. Governmental, social, economic, and organizational incentives have been highlighted as the main motivator for the realization of various innovations in industrial sphere. The targets of this research are clarifying the relation between innovation types and features of industrial units and identifying the connection between obstacles for implementation of innovations in industrial sector. 95% significance level for mean of factors obstructing the realization of industrial innovations being accepted as more effective or less effective, and hypothesis testing for comparison of the mean of these factors have been prepared
Adıyaman’da Yerel Basının Gelişimi Ve Yayımlanan Gazeteler (1950-1990)
Authors: GÜNDÜZ Mehmet
Published: June 2021

Adıyaman, Malatya’ya ya bağlı bir ilçe iken 1954’te il olmuştur. İl
olduktan sonra Adıyaman çeşitli alanlarda gelişmiştir. Adıyaman’ın bu
gelişimini takip edebildiğimiz en iyi kaynakların başında Adıyaman’daki yerel
basın gelmektedir. Bu yüzden Adıyaman’da yayımlanan gazetelerin incelenmesi
Adıyaman’ın siyasi, sosyal, kültürel ve ekonomik gelişimi hakkında fikir
verecektir. Bu çalışma 1950-1990 yılları arasında Adıyaman’da yayımlanmış
gazeteleri kapsamaktadır. Çalışma kapsamında Adıyaman, Çağdaş, Demokrat
Adıyaman, Fırat, Gölbaşı, Hakyol, Hür Fikir, Karaşahin, Yaman Ses, Yeni
Demokrat Adıyaman ve Yeşil Adıyaman gazeteleri incelemiştir.
Gazetelerin teknik bilgileri verilmiş, yayın politikaları ile birbirleriyle
olan ilişkilerin irdelenmiş ve Adıyaman’da yerel basının karşılaştığı
zorluklara değinilmiştir. Gazetelerin haber içerikleri analiz edilmiş ve daha
çok hangi konuları işledikleri belirtilmiştir. Ayrıca gazetelerin siyasi
partilerle ilişkileri ve bunun gazetelerin yayın politikalarına nasıl yansıdığı
da irdelenmeye çalışılmıştır.
“Güney Otoyolu” İle “Narla İncire Gazel” Adlı Eserlerde Bireyin Modern Kent Hayatındaki Bunalımı
Authors: KOLCU Abdurrahman
Published: June 2021

Cumhuriyet
dönemi Türk edebiyatının önemli yazarlarından biri olan Bilge Karasu’nun Narla İncire Gazel adlı romanında,
bireyin kendisini kuşatan ve sınırlayan yaşama düzeninden kurtulma isteği
ayrıntılı bir şekilde ele alınmaktadır. Yazarın değişik zamanlarda Side’de
yaptığı tatillerin izlerini taşıyan ve bu yönüyle otobiyografik bir niteliğe
sahip olan bu eserde, başka bir mekân ve çevre içinde, farklı paradigmaların
hâkim olduğu bir yaşama düzeninde bireyin özgürlük ve mutluluk duygularını
tatması, akabinde de tekrar eski yaşam düzenine dönmek zorunda kalması
anlatılmaktadır. Benzer bir yaklaşım Arjantinli dünyaca ünlü yazar Julio
Cortazar’ın Güney Otoyolu adlı uzun
öyküsünde de sergilenmektedir. Bu eserde varış yeri Paris olan Güney Otoyolu’ndaki
trafiğin aniden tıkanması, haftalar, hatta aylar boyunca açılmaması karşısında
insanların yeni duruma uyum sağlayarak yeni bir yaşama düzeni içerisinde yer
alması, nihayetinde trafiğin akmaya başlamasıyla eski yaşama düzenlerine dönüşü
konu edilmektedir. Bu çalışmada bu iki eser, öncelikli olarak ayrı ayrı
incelenmekte, akabinde tematik açıdan karşılaştırmalı bir incelemeye tabi
tutulmaktadır.
Marmara Gölü Neden Kuruyor?
Authors: KÖRBALTA Hasibe
Published: June 2021

Marmara Gölü; Ege Bölgesinde, Gediz
Havzası içerisinde bulunan ilk aşamada doğal, ancak sonraki dönemlerde
seddelenmesi suretiyle tarımsal rezervuar niteliği kazanan bir göldür. Göl,
2002 yılında sulak alan kategorisinde yer almış, 2017 yılında Ulusal Öneme Haiz
Sulak Alan olarak tescillenmiştir. Gölde 26 alg türü, 6 zooplankton türü, 11
balık türü, 33 iki yaşamlı türü, 162 kuş türü, 32 memeli türü ve 355 bitki türü
tespit edilmiştir. Bunların yanında göl, yaklaşık 2700 kişiye tarım ve
balıkçılık alanında kaynak oluşturmaktadır. Ancak son birkaç yıldır ülkemizdeki
diğer sulak alanlar gibi Marmara Gölü de kuruyarak küçülmeye başlamıştır.
2011-2018 yılları arasında göl alanında %38 oranda (2116 ha) bir küçülme
gözlenmiştir. Yapılan çalışmada göl alanındaki çekilme sebepleri, kamu kurum ve
kuruluşlarınca yapılan resmi çalışma ve ölçümler ışığında doğal ve beşeri
faktörler olarak iki kısımda incelenmiştir. Çalışma sonucunda Marmara Gölünün
kurumasındaki doğal faktörlerin iklim değişikliklerine dayandığı, beşeri
faktörlerin ise yanlış/eksik su yönetim politikaları ve Gördes Barajı temelli
havzalar arası su transferi projesine dayandığı tespit edilmiştir.