bluuebunny/crossref_metadata_2025 huggingface dataset:
Simultaneous biochemical and functional phenotyping of single circulating tumor cells using ultrahigh throughput and recovery microfluidic devices
Authors: Liu Yang , Zhao Wujun , Cheng Rui , Hodgson Jamie , Egan Mary , Pope Christen N. Cooper , Nikolinakos Petros G. , Mao Leidong
Published: July 2021

Integrated inertial ferrohydrodynamic cell separation (i2FCS) enables the isolation of circulating tumor cells with a high recovery rate and high throughput. The functional properties of the isolated CTCs could be evaluated with the migration assay.
A phenanthrene[9,10-d]imidazole-phenol-based fluorescent probe combining ESIPT and AIE for the “turn-on” detection of Cu2+ with green-emission and improved Stokes’ shift, and its application
Authors: Du Jiahui , Zhao Bing , Kan Wei , Yin Haochun , Song Tianshu , Wang Liyan , Sun Li , Wang Xiuwen , Yin Guangming , Wang Jianxin
Published: July 2021

The “turn-on” probe PIA(OH)-Py responds to Cu2+ in living cells and can determine the concentration of Cu2+ in blood samples.
Preparation of a multifunctional P-CF@Mn3O4 composite as a structural anode material
Authors: Han Qigang , Sheng Yalan , Zhang Xu
Published: July 2021

The novel CF@Mn3O4 composite prepared in three steps displays considerable electrochemical characteristics and potential in the flexible vehicle.
Atomic force microscopy and surface plasmon resonance for real-time single-cell monitoring of bacteriophage-mediated lysis of bacteria
Authors: Obořilová Radka , Šimečková Hana , Pastucha Matěj , Klimovič Šimon , Víšová Ivana , Přibyl Jan , Vaisocherová-Lísalová Hana , Pantůček Roman , Skládal Petr , Mašlaňová Ivana , Farka Zdeněk
Published: July 2021

A novel methodology that uses AFM and SPR was developed for monitoring the dynamics of bacterial lysis. The lysis of S. aureus cells mediated by the enzyme lysostaphin and Podoviridae phage P68 was studied under native conditions in real-time.
Enveloping a Si/N-doped carbon composite in a CNT-reinforced fibrous network as flexible anodes for high performance lithium-ion batteries
Authors: Kong Xiangzhong , Luo Shi , Rong Liya , Xie Xuefang , Zhou Shuang , Chen Ziqiang , Pan Anqiang
Published: July 2021

A CNT-reinforced carbonaceous fibers network anchored with N-doped carbon-coated Si (C/Si/CNTs) has been fabricated. Utilized as flexible anodes for lithium-ion batteries, the C/Si/CNT delivers excellent cycling performance and rate capabilities.
Construction of supramolecular laccase enzymes and understanding of catalytic dye degradation using multispectral and molecular docking approaches
Authors: Zhou Qingteng , Guo Ming , Ni Kaijie , Kerton Francesca M.
Published: July 2021

A non-covalent supramolecular enzyme system which was successfully constructed by non-covalent interaction of enzyme with substrates analogs can effectively recognize and degrade 13 kinds of dyes.
MEMES: Machine learning framework for Enhanced MolEcular Screening
Authors: Mehta Sarvesh , Laghuvarapu Siddhartha , Pathak Yashaswi , Sethi Aaftaab , Alvala Mallika , Priyakumar U. Deva
Published: July 2021

A novel machine learning framework based on Bayesian optimization for efficient sampling of chemical space. The framework is able to identify 90% of top-1000 hits by only sampling 6% of the complete dataset containing ∼100 million compounds.
Harnessing the potential of lead-free Sn–Ge based perovskite solar cells by unlocking the recombination channels
Authors: Raoui Yassine , Kazim Samrana , Galagan Yulia , Ez-Zahraouy Hamid , Ahmad Shahzada
Published: July 2021

We computed lead free perovskite solar cells based on CsSn0.5Ge0.5I3 can delivered a PCE of 24.20% and unravel the kinetics by Drift-Diffusion simulation. Perovskite/HTM interface was quantify as the “magic” interface that controls the performance.
Microarray analysis of genes with differential expression of m6A methylation in lung cancer
Authors: Wu Shuo , Lv Xing , Zhang Yan , Xu Xi , Zhao Feng , Zhang Yao , Chen Lizhan , ou-Yang Haifeng , Ti Xinyu
Published: July 2021

Purpose: N6-methyladenosine (m6A) is among the most abundant mRNA modifications in eukaryote. The aim of the present study was to investigate function of m6A mRNA methylation in lung cancer and the underlying mechanism.

Methods: Microarray analysis was performed to detect the differences in RNA expression between cancerous and adjacent non-cancerous tissue samples. The target mRNAs were subjected to Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses. Hierarchical clustering of RNAs was conducted to identify distinct m6A methylation or expression patterns between the samples.

Results: In the present study, some differentially expressed genes (DEGs) of mRNAs were identified, including up-regulated secret phosphoprotein 1 (SPP1) and down-regulated pRB. Functional enrichment analysis revealed that while differential hypermethylation was related to cell cycle, intracellular part and protein binding, the main pathway involved herpes simplex virus 1 infection related to down-regulated AKT, Araf1 and BCL2A1. In the meantime, sexual reproduction, cohesin complex and protein C-terminus binding was functionally linked to differential hypomethylation, while fluid shear stress and atherosclerosis were identified as the main pathways related to up-regulated GST and CNP.

Conclusions: We showed that lung cancer development involved differential expression of SPP1 and pRB mRNA, as well as m6A mRNA methylation in AKT, APAF1, BCL2A1, GST and CNP genes.
A Simplified Approach to Quantifying a Child's Bilingual Language Experience
Authors: Calandruccio Lauren , Beninate Isabella , Oleson Jacob , Miller Margaret K. , Leibold Lori J. , Buss Emily , Rodriguez Barbara L.
Published: July 2021

Purpose

Bilingual children's linguistic experience can vary markedly from child to child. For appropriate audiological assessment and intervention, audiologists need accurate and efficient ways to describe and understand a bilingual child's dynamic linguistic experience. This report documents an approach for quantitatively capturing a child's language exposure and usage in a time-efficient manner.

Method

A well-known pediatric bilingual language survey was administered to 83 parents of bilingual children, obtaining information about the child's exposure to (input) and usage of (output) Spanish and English for seventeen 1-hr intervals during a typical weekday and weekend day.

Results

A factor analysis indicated that capturing linguistic exposure and usage over three grouped-time intervals during a typical weekday and weekend day accounted for ≥ 74% of the total variance of the linguistic information captured with the full-length survey.

Conclusions

Although further confirmation is required, these results suggest that collecting language exposure and usage data from parents of bilingual children for three grouped-time intervals provides similar information as a comprehensive hour-by-hour approach. A time-efficient method of capturing the dynamic bilingual linguistic experience of a child would benefit pediatric audiologists and speech-language pathologists alike.
The Subjective Experience of Word-Finding Difficulties in People With Aphasia: A Thematic Analysis of Interview Data
Authors: Fama Mackenzie E. , Lemonds Erin , Levinson Galya
Published: July 2021

Purpose:

Anomia, or difficulty with naming and word finding, is a pervasive deficit among individuals with aphasia. There is an extensive literature on the mechanisms underlying anomia and on approaches to treatment, but very little is known about the subjective experience of anomia during day-to-day life.

Method:

As part of a larger testing battery, 53 adults with poststroke aphasia took part in a novel, structured interview that included an open-ended question about the general experience of anomia: “Do you ever know what you want to say, but you can't say it out loud? Please describe that feeling.” Video-recorded interview responses were transcribed and analyzed using thematic analysis, an iterative, data-driven process that categorizes interview data into common themes.

Results:

Five main themes emerged among the data from 37 participants who produced adequate responses for use in thematic analysis: strategies to cope with or compensate for anomia, comments on awareness of the level of breakdown (e.g., “I have an idea, but can't get the right words”), negative emotions, impact on relationships, and changes in frequency over time.

Conclusions:

Participants showed strong awareness of anomia and its implications, demonstrating an ability to describe their language breakdown, identify relevant strategies to compensate and/or cope, and acknowledge the impact of anomia on their emotions and social interactions. This patient perspective may serve as a valuable supplement to information typically gained via objective language assessments. Clinicians and researchers may wish to consider incorporating similar subjective measures during assessment and treatment planning.

Supplemental Material

https://doi.org/10.23641/asha.15032643
Aphasia and Friendship: The Role and Perspectives of Speech-Language Pathologists
Authors: Therrien Michelle C. S. , Madden Elizabeth B. , Bislick Lauren , Wallace Sarah E.
Published: July 2021

Purpose

Speech-language pathologists (SLPs) who work with people with aphasia focus on assessment and intervention to support improved communication outcomes for their clients. Friendship, a key component of quality of life, often depends on communicative interaction, and many people with aphasia report having reduced social circles. The purpose of this study was to explore the perceptions of SLPs working with clients with aphasia on their role in supporting friendship development and maintenance.

Method

An online survey composed of questions addressing SLP perspectives and goal setting, assessment, and treatment practices related to aphasia and friendship was distributed to SLPs across the United States. Survey data were analyzed using both quantitative and qualitative methods.

Results

Forty-seven SLPs completed the survey. While many SLPs reported that the friendships of their clients with aphasia were impacted by aphasia and that it was within their scope of practice to support friendship development and maintenance, many did not specifically assess or target friendship and friendship outcomes in the treatment plan. SLPs identified barriers and facilitators to focusing on friendship within the context of speech and language therapy.

Conclusions

Findings suggest the majority of participating SLPs were interested in addressing friendship with clients with aphasia; however, they experienced barriers in practice. Further examination of SLP perspectives and clinical practice regarding friendship and aphasia is warranted. Additionally, research investigating effective assessment and therapeutic methods that target friendship in aphasia is needed to support clinical practice and the well-being of clients with aphasia.

Supplemental Material

https://doi.org/10.23641/asha.15032217
Non‐linear model of the switched reluctance motor with included core losses’ effects
Authors: Mihic Dragan S. , Terzic Mladen V. , Koprivica Zarko V.
Published: July 2021

To accurately predict motor performance, considering the effects of core losses is of great importance, especially at speeds much higher than the base where the core losses represent a considerable portion of the total drive losses. Neglecting the effects of core losses leads to an error in the switched reluctance motor (SRM) performance prediction. In this study, a previously developed non‐linear SRM model with multiphase coupling is extended by considering the instantaneous effects of core losses on the SRM performance. Using the new model, the nature of these effects is determined. A comparison of the simulation results of the proposed, basic, and finite element method (FEM) model confirms the importance of considering the effects of core losses on motor performance. Besides the FEM model, the accuracy of the proposed model is verified by experiments.
Motion control of the rail traction system by dual brushless AC motors using a disturbance observer
Authors: Lee Dong‐Hee
Published: July 2021

This study presents an accurate motion control scheme using a modified non‐linear disturbance torque observer for a rail traction system driven by a dual brushless AC (BLAC) motor. The target application has two BLAC motors mounted on the top surface of the rail. The mover translation along the rail is handled solely by the traction motors without any external sensor. In the low‐speed range, however, the conventional disturbance torque observer is unstable due to the resolution of the Hall sensor and speed detection delay. To solve this instability problem, a simple weight function with the synchronisation of torque current and the delayed speed feedback is added to the proposed torque observer. This way, zero output can be created in the selected speed region for stabilisation and torque current can be compensated. Furthermore, simple balance error compensation to synchronise both motors is added to the proposed speed and position model reference adaptive control scheme. The experiments were performed to verify the proposed control method. The results show advanced performance with reduced position and balance errors between the two BLAC motors and an improved overall control performance of the rail mover.
Iterative relaxation solution for AC optimal transmission network reconfiguration considering bus splitting
Authors: Sun Yaqi , Tian Zhuang , Wu Wenchuan , Du Yanling , Wang Bin , Xi Yanna
Published: July 2021

Optimal transmission network reconfiguration is an important means to improve the economy and reliability of power grid. However, the traditional optimal transmission switching only considers the transmission line switching strategy and some approximate power flow models are adopted to make it tractable, such as linearisation or convex relaxation ones. In this article, first, a comprehensive network reconfiguration model considering both the line switching strategy and the bus splitting strategy inside substations is established. This optimal network reconfiguration incorporating AC power flow equations is an intractable mixed integer non‐linear programming problem. The model is first relaxed to a mixed integer second‐order cone programming to get the initial solution and an extended feasibility recovery algorithm is developed to obtain the solution satisfying the AC power flow equations. Numerical tests show that the proposed method can reduce the total generation cost and guarantee the system security while the baseline methods cannot obtain feasible solution in most cases.
Application of real‐time nonlinear model predictive control for wave energy conversion
Authors: Haider Ali S. , Brekken Ted K.A. , McCall Alan
Published: July 2021

This article presents an approach to implement a Nonlinear Model Predictive Controller (NMPC) in real‐time with a non‐standard cost index. The proposed technique's applications are presented to maximize the energy produced by a Wave Energy Converter (WEC) when the cost index is a non‐quadratic piecewise discontinuous functional of some design variables. The presented framework is based on pseudo‐quadratisation and weight scheduling, which is implemented using the ACADO toolkit for MATLAB/Simulink. The proposed strategy features code generation and deployment on the real‐time target machines for industrial applications. The simulations and experiments confirm the success of the proposed approach in achieving the feasible operation of the NMPC and an optimal power capture by the wave energy converters.
The TOPGöt high-mass star-forming sample
Authors: Mininni C. , Fontani F. , Sánchez-Monge A. , Rivilla V. M. , Beltrán M. T. , Zahorecz S. , Immer K. , Giannetti A. , Caselli P. , Colzi L. , Testi L. , Elia D.
Published: July 2021

Aims. The TOPGöt project studies a sample of 86 high-mass star-forming regions in different evolutionary stages from starless cores to ultra compact HII regions. The aim of the survey is to analyze different molecular species in a statistically significant sample to study the chemical evolution in high-mass star-forming regions, and identify chemical tracers of the different phases.

Methods. The sources have been observed with the IRAM 30 m telescope in different spectral windows at 1, 2, and 3 mm. In this first paper, we present the sample and analyze the spectral energy distributions (SEDs) of the TOPGöt sources to derive physical parameters such as the dust temperature, Tdust, the total column density, NH2, the mass, M, the luminosity, L, and the luminosity-to-mass ratio, L∕M, which is an indicator of the evolutionary stage of the sources. We use the MADCUBA software to analyze the emission of methyl cyanide (CH3CN), a well-known tracer of high-mass star formation.

Results. We built the spectral energy distributions for ~80% of the sample and derived Tdust and NH2 values which range between 9−36 K and ~3 × 1021−7 × 1023 cm−2, respectively. The luminosity of the sources spans over four orders of magnitude from 30 to 3 × 105 L⊙, masses vary between ~30 and 8 × 103 M⊙, and the luminosity-to-mass ratio L∕M covers three orders of magnitude from 6 × 10−2 to 3 × 102 L⊙∕M⊙. The emission of the CH3CN(5K-4K) K-transitions has been detected toward 73 sources (85% of the sample), with 12 nondetections and one source not observed in the frequency range of CH3CN(5K-4K). The emission of CH3CN has been detected toward all evolutionary stages, with the mean abundances showing a clear increase of an order of magnitude from high-mass starless cores to later evolutionary stages. We found a conservative abundance upper limit for high-mass starless cores of XCH3CN < 4.0 × 10−11, and a range in abundance of 4.0 × 10−11 < XCH3CN < 7.0 × 10−11 for those sources that are likely high-mass starless cores or very early high-mass protostellar objects. In fact, in this range of abundance we have identified five sources previously not classified as being in a very early evolutionary stage. The abundance of CH3CN can thus be used to identify high-mass star-forming regions in early phases of star-formation.
Challenges of small-scale standalone solar energy supply in parts of Lagos via 39 years dataset
Authors: Emetere M.E. , Afolalu S.A.
Published: July 2021

The adoption of solar energy as a sustainable clean type of energy can be seen globally by the patronage of solar devices. However, the high patronage photovoltaic (PV) module by the small-scale standalone user may be mitigated by the recent high maintenance cost via PV module damages by UV radiation. This study analyzed thirty-nine years (1980-2018) shortwave dataset in the tropics to chart the way forward for PV user, manufacturer, and regulatory organizations. It was observed that there is an increase in shortwave radiation in recent times that has led to more damages to PV modules. However, there is a statistical possibility that there may be lower shortwave radiation in the next decade, thereby reducing PV module damage. It is recommended that PV manufacture should modify the PV polymeric to shield the PV modules from UV radiation damage. Based on this research’s finding, it is recommended that product regulatory organizations develop a new technique to monitor PV modules.
Rural Electrification in Mozambique: Challenges and Opportunities
Authors: Manhique Milagre , Barchiesi Dominique , Kouta Raed
Published: July 2021

The International Energy Agency states that access to electricity is an essential condition for sustainable human development, however, it is estimated that approximately 22% of the world population (about 1.6 billion people) does not have access to electricity, a significant part of these people live in rural areas of developing countries in Sub-Saharan Africa, despite the fact that Africa has enormous potential in renewable and non-renewable energy sources. In Mozambique, approximately 50% of the population does not have access to electricity due to the fact that 66.6% of the population lives in rural areas, where the rate of access to electricity is even worse, paradoxically, Mozambique has a significant potential for renewable energy sources equivalent to 23 TW, this potential when combined with factors such as commitment to ensuring access to electricity for all, forecast of population growth and electricity demand, generates huge investment and long term business opportunities in the electricity sector, however, there are economic, social and cultural challenges that constitute uncertainties that should be considered in the decision-making process for investment in rural electrification infrastructure in the specific context of Mozambique and Sub-Saharan Africa in general. This article aims to discuss the possibilities that Mozambique has to guarantee access to electricity for all by 2030 (emanating from United Nations Sustainable Development Goal 7) emphasizing land use plans and education for rural electrification benefits through the use of renewable energy sources.
Exploring Alternative Policies to Reduce Electricity Subsidies in Indonesia
Authors: Nurliyanti Vetri , Pandin Marlina , Setiadanu Guntur Tri , Al Rasyid Harun , Cendrawati Dian Galuh , Halog Anthony , al Irsyad Muhammad Indra
Published: July 2021

Electricity subsidies in Indonesia remain high and tend to increase. Existing studies generally propose electricity subsidy reform through economic price adjustment; however, this option potentially arises political and social conflicts. The government and the State Electricity Company have also undertaken several measures to decrease electricity supply costs but those measures remain ineffective due to increasing energy prices needed as fuels for power generations. Our study analyses the effectiveness of two alternative grants for LED lamps and rooftop photovoltaic (PV), to reduce electricity subsidies for low-income residential customers with 450 VA and 900 VA electricity capacity limits. The analysis result is that replacing existing lamps with LED lamps for all those customers will cost the government US$ 313.7 million but potentially decrease electricity subsidies to US$ 208.7 million/ year for 15 years. On the other hand, installing the rooftop PV system is ineffective to bring down the electricity subsidies. The investment cost of the on-grid rooftop PV system is between US$ 827.6 and US$ 1,310.3 per house, while the electricity subsidy savings for 20 years are between US$ 724.1 and US$ 744.8.
Ultra high performance concrete shear walls
Authors: Fang YiChen
Published: July 2021

The history of the development of Ultra-High Performance Concrete (UHPC) shear walls and the current status of today’s research as well as the future development prospects are comprehensively collated. The analysis process and conclusive results of the present-day domestic and international research on UHPC shear walls are highlighted. The load displacement curves, hysteresis curves and skeleton lines of ultra-high performance concrete shear walls under different experimental loads are collated and compared. Integrate the corresponding equations for shear bearing capacity and equations for the overall specimen load displacement curves. A finite element model of the ultra-high performance concrete shear wall is established to simulate and perform non-linear finite element analysis of its force process under unidirectional horizontal loading.
Ensuring the issuance of investment-attractive corporate bonds
Authors: Vasylieva Dariia , Kudyk Tetyana , Lisovska Valentyna , Abuselidze George , Hryvkivska Oksana
Published: July 2021

Despite the fact that the scientific literature pays considerable attention to ensuring the investment attractiveness of national corporate bond markets based on macro-environmental factors, as well as individual companies – based on micro-environmental factors, the issue of optimizing the characteristics of corporate bonds in the prospectus remains insufficiently disclosed. However, coupon rate, price and maturity are the basic indicators that investors take into account when deciding to purchase corporate bonds, so they need more detailed research. approach to ensuring the issuance of investment-attractive corporate bonds, based on the use of indicators of companies with the highest level of demand on the stock market to build a matrix of coupon rate, price and maturity of corporate bond, the use of which allows to establish the optimal ratio between these characteristics. Enterprises issue corporate bonds to attract additional financial resources in their activities, so they are interested in ensuring the investment attractiveness of these securities. The investment attractiveness of corporate bonds depends on their own characteristics, as well as on micro- and macro-environmental factors. The most affordable way to ensure the investment attractiveness of corporate bonds is to establish the optimal characteristics of bonds in the prospectus. The companies whose corporate bonds are in the highest demand on the stock market have the optimal ratio between coupon rate, price and maturity. Determining the trend of ensuring a balance between these indicators of leading companies allows us to establish a model of decision-making by investors in a particular market of corporate bonds.
Application of digital solutions in the physical culture and sports industry as an element of sustainable regional development
Authors: Aleksina Anastasia , Kazakova Оlga , Aleksin Anton
Published: July 2021

It is necessary to note the importance of digitalization of the industry, which is necessary and possible to solve with the help of digital services and platforms with the support of the state. The paper presents the results of the analysis of scientific works and the materials of strategic sessions on the development of new digital solutions, implying a platform approach to the management of the field of physical education and sports services. The analytical module of the platform will allow the collection and interpretation of industry data on economic, social and sports indicators, including the use of the artificial intelligence technology. The prospects of using the ecosystem of the information and service platform in the implementation of various federal programs in the field of physical culture and sports are revealed. The results of monitoring of digital technologies for physical education and sports education in two leading universities of Russia are presented. Analysis of Sensor Tower service statistics on the number of downloaded mobile sports applications was carried out. The foreign experience of introduction of digital technologies on the example of sports commercial organization (MLBAM) is presented. Priority directions of using digital solutions in sports industry are defined, thanks to which, on the basis of objective data, it will be possible to determine the popularity of certain sports among those involved, objectively and transparently evaluate state investments in sports and their performance.
Innovative Factors of Sustainable Development of Regions of Kazakhstan
Authors: Sokira Tatyana , Belgibayeva Zhanat , Dzhulaeva Almazhan
Published: July 2021

The article discusses the formation of a rating as a strategic planning tool in order to develop a set of measures to overcome regional inequality, equalize the levels of social-and-economic development and living standards of the population of the regions of Kazakhstan. Based on the data of the Committee on Statistics of the Ministry of National Economy of the Republic of Kazakhstan, indicators of region innovative developments of Kazakhstan were analyzed and calculated. The factors of the level of innovative activity are revealed. Based on them, groups of regions with a high, medium, below average and very low innovative development level were identified. There is a close relationship between the innovative development level and the rate of economic growth. On the one hand, the dynamics of economic growth requires innovation. On the other hand, innovation is the basis for increasing the competitiveness of the country and regions.
Assessment of the Factors of Investment Attractiveness of the Business Environment in Terms of Sustainable Development of the Region
Authors: Alexandrov Gennady , Vyakina Irina , Skvortsova Galina
Published: July 2021

It should be noted, that today the world scientific community try to find new ways of economic development, which are aimed at refusing to absolutize economic growth at the expense of solving social and ecological problems and ensuring the vital requirements of future generations. In this regard, the authors have proposed a methodological technique, that allows to systematize the factors of investment attractiveness of the business environment of the region, which are considered in terms of implementing the goals of sustainable development and increasing innovative activity. At the same time, we consider it necessary to emphasize, that the use of the obtained research results will allow, in our opinion, to significantly advance both in theoretical and practical terms in solving the development and implementation of reasonable interim measures to advance the region towards achieving sustainable development goals.
China or South Korea: a comparative analysis of innovative development
Authors: Reshetnikova Marina , Pugacheva Irina , Evseevicheva Alina
Published: July 2021

Today, many countries understand the need to develop innovative ecosystems, come to the fore and become drivers of the global economy. For example, China and South Korea have identified the development of artificial intelligence (AI) as one of the main driving forces of the national economy at the present stage. The article considers the current position of countries in the world rankings of innovative development and the main directions of the development of artificial intelligence in these countries. Special attention is paid to the latest developments of South Korea and China in AI. The authors concluded that the development and commercialization of AI should become one of the most critical aspects of the future. With the right incentives and government support, South Korea and China can become leading countries in AI outpacing current leaders.
Argentina – China. Sustainable development for a better future
Authors: Samorodov Artem
Published: July 2021

Argentina is considered one of the fastest developing countries in Latin America. However, since 2015, the country has been trying to get out of the economic crisis, which has significantly worsened by 2019. Meanwhile China’s relations with geographically and culturally distant continents, such as Latin America, are widely seen as a part of Chinese government’s drive to establish itself as a global leader, as well as to secure new markets and resources for its sustainable growth. Even the distance between regions is not a significant obstacle to the sustainable development of relations. This article will discuss the relations between the People’s Republic of China and the Argentine Republic. The author focuses on the economic, investment and energy aspects of sustainable development of bilateral relations. The objective was to establish the format of bilateral relations between Argentina and China starting in 2015 and ending in 2020. It can be concluded that the relations between Argentina and China are a dynamically developing example of mutually beneficial sustainable development of the two countries and such relations can be used by Argentina in order to overcome the crisis and for further prosperity of this beautiful country.
Biomonitoring of the toxic effects of industrial emissions
Authors: Vasilevskaya Natalia , Osechinskaya Polina
Published: July 2021

The article presents results of studying the impact of industrial emissions of the Apatit project (Murmansk region) on the fertility and sterility of pollen of Scotch pine (Pinus sylvestrisL.). A low share of fertile pollen (49.3–57.4%) and high ratio of sterile pollen (42.6–50.7%) are revealed in the samples from the city of Apatity under study. The study calculated the palynotoxic effect of the industrial emissions. Shown the toxic effect of emissions of the apatite-nepheline complex on male gametophyte of Scotch pine and the process of gamete formation. The ecological safety of the city of Apatity is closely related to the problems of the complex use of apatite-nepheline ores and the minimization of storage of waste in tailing dumps.
Financing the human environment development projects based on the concept of a smart sustainable city
Authors: Ablyazov Timur , Vishnivetskaya Alisa
Published: July 2021

Currently, the spread of the concept of a smart sustainable city as the basis for the development of the human environment is a worldwide trend. The issues of financing are of particular importance for the successful implementation of projects for the development of the human environment on the basis of this concept. The article discusses the concept of sustainability of the living environment in the modern conditions of the digital economy and also substantiates the relevance of studying the financial aspects of projects implementation within the framework of the concept of a smart sustainable city. As a result of the work, the authors analyzed the ways of financing projects for the development of the living environment on the basis of the concept of a smart sustainable city, highlighted the problems specified in these projects in the sphere of financial support, and concluded that the most promising ways for application are those, combining both public and private sources of financing in the face of growing demand for transformation of traditional urban infrastructure.
Studies on zinc recovery from technogenic waste
Authors: Panayotova Marinela , Panayotov Vladko
Published: July 2021

Results from laboratory experiments are presented on extraction of zinc available in waste from lead-zinc metallurgy, mixed with lead-zinc flotation tailings and some waste rock, by leaching it under atmospheric conditions with sulfuric acid (H2SO4) solutions (5 and 10 wt. %) and 30 % hydrogen peroxide in the temperature range of 25 - 80 °C, at leaching time 30 - 120 min. Material leaching with 10 % H2SO4solution at 70 °C for one hour brings into pregnant leach solution (PLS) around 80 % of zinc available. Imposing an electrochemical impact during the leaching process increases the quantity of leached zinc by around 5 %. Direct electrowinning from the PLS obtains zinc metal of grade 75-76 %. The suggested treatment removes metals-pollutants from accumulated mixed technogenic waste therefore rendering it more environmentally friendly. Experiments showed that old mixed waste from mining, mineral processing and metallurgy activities merits further studies as secondary source of metals.
Russian system of preservation of anthropological potential in the face of increasing threat of emergency situations, natural, man-made and terrorist nature
Authors: Kochetkov Maksim , Karmanovskaya Natalya , Sharoglazova Tatyana
Published: July 2021

The problem of prevention and liquidation of emergency situations, including terrorist acts is investigated. The improvement of weapons and the professionalization of terrorist organizations make it difficult to determine the cause of natural and man-made emergencies. Therefore, the dominance in Russia of the territorial principle of functioning of the unified state system for the prevention and elimination of emergency situations meets the challenges of time less and less. The urgency of mechanisms of extraterritorial mobilization of forces and means of prevention and liquidation of emergency situations is proved. The existing system of prevention and liquidation of emergency situations of natural and man-made character is connected with the key role of the Ministry of emergency situations of Russia. At the same time, the military Department is in charge of responding to emergency situations determined by military threats. It is proposed to change this hierarchy, defining the leading role of the military Ministry.
Water-air regenerative heat exchanger with increased heat exchange efficiency
Authors: Batukhtin Sergey , Batukhtin Andrey , Baranovskaya Marina
Published: July 2021

According to experts’ forecasts, by 2040 the global demand for energy will increase by 37%, and renewable energy sources in the next 20 years will become the fastest growing segment of the world energy, their share in the next decade will grow by about one and a half times. Solar energy is the fastest growing industry among all non-conventional energy sources and is gaining the highest rates of development in comparison with other renewable energy sources. In this article, the authors provide an overview of the technologies that increase the efficiency and productivity of solar panels, only the investigated methods are described that can speed up the process of introducing solar energy instead of traditional. All the methods described can increase the efficiency of systems that are based on the use of the sun as the main source of energy. The authors presented and described the scheme of a solar-air thermal power plant, which will improve energy efficiency through the use of a regenerative air solar collector with increased heat transfer efficiency. Strengthening will be achieved through the use of hemispherical depressions on the surface that receives solar radiation. A schematic diagram is given and the principle of operation of such a solar collector is described in detail. A comparative calculation of the intensification of the solar collector with the use of depressions and without the use as modernization was carried out, on the basis of which a conclusion was made about the efficiency of using this type of solar collector and the economic effect from the application of this method. A description of the method for calculating the solar collector is given, thanks to which this development can be used and implemented in existing heating and hot water supply systems.
Predictive model of the dam foundation deformations according to the consolidation model
Authors: Bakshtanin Alexander , Shiryaeva Margarita
Published: July 2021

The dam with two culverts on the Vyunka river has been chosen for forecasting calculations. The physical and geographical features of the research area have been explored. The information on the organization of the control system of the hydraulic structure has been studied, the mix of diagnostic indicators of the state of the hydraulic structures substantiation has been carried out. The calculated values of the coefficients of the overall the upstream and downstream slopes stability for the cases considered have exceeded the standard coefficient of stability. The criteria values of the diagnostic indicators at the project stage have been defined by analysing the calculation results with ultimate element technique using the Plaxis 2D program for filtration modes, stress-strain state, strength and stability of hydraulic structures for the main and special combinations of loads. The choice of indicators is based on assessing the possibility of monitoring their values. The influence of the type of damage and destruction of the above elements has different significance on the hydraulic structures’ safety. A predictive model of deformations of the dam base was built according to the consolidation model based on the extrapolation method. The results of the obtained model of research hydraulic stricture are given.
Surface morphology and X-ray photoelectron spectroscopy of BiFeO3 thin films deposited on top of Ta2O5/Si layers
Authors: Ramazanov Shikhgasan , Ţălu Ştefan , Dallaev Rashid , Ramazanov Guseyn , Škarvada Pavel , Oulehla Jindřich , Sobola Dinara , Nazarov Dmitry
Published: July 2021

In this study a comparison of the topography of BiFeO3 (BFO) thin films deposited on tantalum pentoxide substrates of different thicknesses is provided. The Ta2O5 substrates had a roughness increasing with the film thickness. The relationship between substrates of different topography but the same composition with the quality of the growing bismuth ferrite film is estimated. For the first time the topography estimation of BFO on Ta2O5 is presented. The difference in temperature expansion coefficients leads to intensive evaporation of bismuth ferrite from the surface during annealing. XPS analysis is provided for asdeposited and annealed BFO layers.
The problem of self-perception in gifted children in the context of psychology of sustainable development
Authors: Belova Elena
Published: July 2021

The study of the sphere of self-awareness of a developing personality is one of the urgent tasks of the psychology of sustainable development. The article deals with the problem of self-perception of children in connection with the problem of giftedness. High creativity is understood as the basis of giftedness. The main attention is paid to preschool age as an important initial period in the formation of personality and the development of the abilities and talents of children. The results of an empirical study of the specificity of self-perception in children of 6-7 years old with signs of giftedness in comparison with their peers are presented. The features of the profiles “I-real” and “I-ideal” in preschoolers are described, taking into account the creative potential, gender. It is emphasized that the educational environment at the stage of preschool childhood should be built taking into account the development trends of modern children: understanding the specifics of not only the cognitive, but also the personal sphere of their development.
Forming of ecological awareness of the students of international relations and regional studies at the English language teaching
Authors: Konovalova Zhanna , Khafizova Alsu , Arzhantseva Natalia
Published: July 2021

The paper analyses methodology of forming ecological awareness of the students of international relations and regional studies at higher educational level. The pedagogical experience of Kazan Federal University is presented. The authors justify the topicality of implementing ecology and climate change related topics in the syllabus of the educational programmes. The systemic approach to the formation of ecological literacy is implemented throughout the whole course of the Bachelor degree programme. The authors of the article conduct a survey to define the students’ level of ecological awareness and present different approaches to implementing climate change and other environmental issues in the foreign language teaching process, including discussions, dialogues, brainstorming, problem-solution role-playing, project presentation, and writing an essay.
Educational Process in Higher Education Institutions in the Context of the COVID-19 Pandemic
Authors: Boer Victor , Andreitso Sergei , Timofeeva Irina
Published: July 2021

In 2020, almost all nations face a pandemic of COVID-19 coronavirus infection, including Russia. This virus has affected all spheres of social life, not excluding the field of education, and has required radical changes. The COVID-19 pandemic has given a strong impetus to the transition to a new education format, so students in higher education institutions have moved to a distance-learning format. With the transition to a new format, educational institutions had to face many difficulties, mainly the lack of experience and practice of mass introduction of remote access technologies to provide and receive educational services. At the same time, tremendous work has been carried out in Russia to amend the existing legislation on education, improve methods of regulating and controlling the educational process and the quality of education
A Development of MALL Materials to Quality Education and Support English Oral Communicative Learning of Thai Airport Immigration Police Officers
Authors: Zhang Yujiao
Published: July 2021

Mobile-assisted language learning (MALL) creates more opportunities for learners to access learning resources more easily and selfdirectly without time and place limitation. Thus, this study aimed at developing MALL materials to support the English oral communicative learning of Thai airport immigration police officers based on needs analysis and exploring the quality of MALL materials to support English oral communicative learning of Thai Airport Immigration police officers.The instruments of this study were the semi-structured interviews with the officers in order to conduct needs analysis, and the IOC (Item-Objective Congruence) form for experts to validate the materials developed, and the questionnaire to assess the officers’ opinions after using the materials to explore the quality. ADDIE model was applied to guide the overall process of developing the materials. The findings indicated that the self-instructional MALL materials laded in WeChat public platform that consisted of two units, Arrival and Departure, and ten lessons that were under each unit, both of which were accordance with the airport immigration officers’ needs. Moreover, the evaluation based on the officers’ opinions revealed that the MALL materials had high quality of content, rational organization, pleasant presentation and convenient functions of the platform.
A systematic review of the transiliac internal fixator (TIFI) for posterior pelvic injuries
Authors: Müller Franz , Füchtmeier Bernd
Published: July 2021

Objective: To summarize the literature on transiliac internal fixator (TIFI) indications and outcomes for treating posterior pelvic ring injuries.Methods: We searched databases for original publications in journals. Biomechanical and clinical studies using a TIFI for posterior pelvic ring injuries were considered for inclusion. The dates of publications that were included ranged from January 2000 until December 2020.Results: A total of 13 articles were reviewed, including eight clinical studies and five biomechanical tests. We found only case series and no multicenter or randomized study. The clinical studies contained data for a total of 186 cases, including indications, treatments, complications, and outcomes, with a minimum follow-up time of 12 months. All studies reported superior results according to operation time, blood loss, complication, dislocation, and union. One biomechanical test evaluated inferior results.Conclusions: The TIFI is a user-friendly and safe device to treat posterior pelvic injuries. It can also be used for acute, high-impact injuries, and fragility fractures. Nevertheless, there is no evidence concerning which types of pelvic fractures are most beneficial. Therefore, further biomechanical and clinical studies are necessary to resolve this question.