bluuebunny/crossref_metadata_2025 huggingface dataset:
Alkylborane initiated RAFT polymerization: impact of carboxylic acid deblockers
Authors: Wilson Olivia R. , Magenau Andrew J. D.
Published: June 2023

Oxygen-tolerant, alkylborane initiated RAFT has a partial order rate dependence of 1 for the acid concentration, supporting a homolytic substitution mechanism, and can be conducted with diminished deblocker concentrations when using stronger acids.
From unprecedented 2,2′-bisimidazole-bridged rare earth organometallics to magnetic hysteresis in the dysprosium congener
Authors: Benner Florian , Demir Selvan
Published: May 2023

A new series of bisimidazole-bridged rare earth metallocene complexes, [(Cp*2RE)2[μ-bim] (RE = Y, Gd, and Dy), was isolated and studied by crystallography, magnetometry, spectroscopy, and computations. The Dy congener is a single-molecule magnet.
Synthesis of 6-membered germacycles by intramolecular germylzincation of alkynes
Authors: Kassamba Seydou , Reboli Mathias , Perez-Luna Alejandro , Ferreira Franck , Durandetti Muriel
Published: June 2023

Intramolecular germylzincation of arylgermanes provides tetrasubstituted vinylgermanes, after post-functionalization of the vinylzinc intermediate with good regio- and stereoselectiviy.
A CMC-g-poly(AA-co-AMPS)/Fe3O4 hydrogel nanocomposite as a novel biopolymer-based catalyst in the synthesis of 1,4-dihydropyridines
Authors: Hemmati Elmira , Soleimani-Amiri Somayeh , Kurdtabar Mehran
Published: June 2023

A CMC-g-poly(AA-co-AMPS)/Fe3O4 hydrogel nanocomposite was successfully designed and prepared via graft copolymerization followed by cross-linking addition. This was used as an efficient catalyst for the green synthesis of 1,4-DHPs under ultrasound and thermal conditions.
Hydroxyapatite-based carriers for tumor targeting therapy
Authors: Qian Gongming , Xiong Lingya , Ye Qing
Published: June 2023

At present, targeted drug delivery is regarded as the most effective means of tumor treatment, overcoming the lack of conventional chemotherapeutics that are difficult to reach or enter into cancer cells.
Peroxidase-like activity of biosynthesized silver nanoparticles for colorimetric detection of cysteine
Authors: Alula Melisew Tadele
Published: May 2023

The peroxidase-like activity of the biosynthesized AgNPs was inhibited on addition of cysteine. This enables us to develop a colorimetric method for cysteine detection.
Harnessing indigenous scientific discovery in medicinal chemistry to promote selected nature of science attributes among Chinese high school students: case of Artemisinin
Authors: Wan Dongsheng , Subramaniam R.
Published: June 2023

Though there are a multiplicity of approaches that have been used to promote Nature of Science (NOS) among school students, an approach based on exploration of a scientific discovery indigenous to the sample population, of contemporary interest, and based on a topic outside the school science syllabus seems to be lacking in the literature. This study focused on Chinese high school students (N = 98), using the discovery of an anti-malarial drug by a recent Nobel Prize winning Chinese scientist as a focus. A popular science article on this discovery formed the basis for the intervention, and a mainly qualitative approach was used. Variants of an explicit-reflective approach were used for the three groups formed by random sampling for the intervention. The four NOS attributes targeted were: socio-cultural, empirical nature, scientific method, and creativity/imagination, and these were explicitly interrogated through four open-ended questions, respectively. Responses to these questions were parked into five rating levels, which helped to explicate the extent to which the samples were able to provide descriptors to characterize their understandings. The approach based on reading of the article followed by student discussions and mediation by the instructor showed, overall, more gains in NOS as compared to just (1) reading/re-reading of the article and reflecting on it, and (2) reading of the article followed by small sub-group discussions and reflecting on it. It is suggested that there is a case for using indigenous scientific discovery as an approach to foster interest in NOS among students. Some implications of the study are discussed.
Thermodynamic calculation of the ionic conductivity of LiPON glasses and solid electrolytes
Authors: López-Grande Alberto , Mather Glenn C. , Muñoz Francisco
Published: May 2023

A method to predict the ionic conductivity of LiPON solid electrolytes is presented which is based on thermodynamic modelling of the formation of oxynitride compounds in the system Li2O–P2O5–P3N5.
In situionothermally synthesized redox-active carbon nitride-confined organic small molecule cathodes for ultrastable lithium-ion batteries
Authors: Yang Mingsheng , Li Rui , Ma Huige , Zhu Xiaoran , Wang Yan , Hao Yuxin , Wang Bei , Dong Yucheng , Hu Mingjun , Yang Jun
Published: May 2023

Despite their high specific capacity and low cost, small-molecule organic cathodes usually suffer from fast capacity decay due to unavoidable dissolution in electrolytes, which largely impedes their practical applications.
Advances in modification methods and the future prospects of high-voltage spinel LiNi0.5Mn1.5O4— a review
Authors: Fu Tianji , Lu Di , Yao Ziqing , Li Yujie , Luo Chongyang , Yang Tianyan , Liu Shuangke , Chen Yufang , Guo Qingpeng , Zheng Chunman , Sun Weiwei
Published: May 2023

Herein, we discuss the recent advances in boosting the electrochemical performance of LNMO. Further research directions of LNMO are also discussed, such as machine learning and AI-assisted virtual experiments, providing new insight for the development of LNMO cathodes.
Construction of dense H-bond acceptors in the channels of covalent organic frameworks for proton conduction
Authors: Liu Sijia , Liu Minghao , Li Xuewen , Xu Qing , Sun Yuhan , Zeng Gaofeng
Published: June 2023

Two-dimensional (2D) COFs with a high density of oxygen atoms along the pore walls as a host loaded with H3PO4facilitated the formation of hydrogen-bond networks along the pores, further facilitating proton transport.
Synergistic MXene/LDH heterostructures with extensive interfacing as emerging energy conversion and storage materials
Authors: Venkateshalu Sandhya , Tomboc Gracita M. , Nagalingam Suruthi Priya , Kim Jun , Sawaira Tehzeeb , Sehar Kashaf , Pollet Bruno G. , Kim Jin Young , Nirmala Grace Andrews , Lee Kwangyeol
Published: June 2023

This review covers MXene/LDH heterostructures, including synthesis, growth mechanism, morphology factors, and chemical properties. Synergistic interactions at the heterointerface and their applications are analyzed in-depth.
d-Calcium pantothenate-derived porous carbon: carbonization mechanism and application in aqueous Zn-ion hybrid capacitors
Authors: Liu Lantao , Sun Ziyu , Lu Yaping , Zhang Jiapeng , Li Yiming , Zhang Gaixia , Chen Xiaohong , Omanovic Sasha , Sun Shuhui , Song Huaihe
Published: May 2023

Explored the carbonization mechanism of d-calcium pantothenate, including finding the optimal carbon skeleton reconstruction, pore structure design, and defect fabrication, and constructing stable structure cathodes with high density and long service life.
Leveraging peptide–cellulose interactions to tailor the hierarchy and mechanics of peptide–polymer hybrids
Authors: Jang Daseul , Beckett Laura E. , Keum Jong , Korley LaShanda T.J.
Published: May 2023

Inspired by spider silk's hierarchical diversity, we leveraged peptide motifs and functional nanofillers to modulate the mechanical properties of a conventional polymer framework via specific matrix–filler interactions.
Guidance for Increasing Primary Study Inclusion and the Usability of Data in Meta-Analysis: A Reporting Tutorial
Authors: Chow Jason C. , Sandbank Micheal , Hampton Lauren H.
Published: June 2023

Meta-analyses can be used to comprehensively summarize the state of a given literature base, understand development and relations between constructs, and synthesize intervention effects to identify “what works for whom,” all of which can directly inform research, practice, and policy. In this tutorial, we first argue that data reporting in primary studies can meaningfully affect the results of meta-analyses and, most importantly, the subsequent interpretations and use of the findings in research, practice, and policy in speech, language, and hearing sciences. Though reporting guidelines have been well established for the results of meta-analyses, there is limited focus on the essentials for primary study reporting that allow for inclusion in meta-analyses. To this end, we provide guidance for primary study authors to ensure their studies can maximize their contributions to research syntheses and, specifically, to meta-analyses. We discuss current and ongoing issues related to reporting, provide data-based examples of instances where lack of reporting or transparency has rendered a study ineligible from inclusion in a meta-analysis, encourage editorial teams and peer reviewers to be flexible in the inclusion of supplemental data reporting based on journal requirements and limits, and suggest being explicit and earnest about why these requests are important to advancing the field.

Supplemental Material:

https://doi.org/10.23641/asha.23117996
The Relationship Between Speech Accuracy and Linguistic Measures in Narrative Retells of Children With Speech Sound Disorders
Authors: Case Julie , Hallin Anna Eva
Published: June 2023

Background:

Speech and language are interconnected systems, and language disorder often co-occurs with childhood apraxia of speech (CAS) and non-CAS speech sound disorders (SSDs). Potential trade-off effects between speech and language in connected speech in children without overt language disorder have been less explored.

Method:

Story retell narratives from 24 children (aged 5;0–6;11 [years;months]) with CAS, non-CAS SSD, and typical development were analyzed in Systematic Analysis of Language Transcripts (SALT) regarding morphosyntactic complexity (mean length of C-unit in words [MLCU]), lexical diversity (moving-average type–token ratio [MATTR]), and linguistic accuracy (any linguistic error/bound morpheme omissions) and compared to 128 age-matched children from the SALT database. Linear and mixed-effects logistic regressions were performed with speech accuracy (percent phonemes correct [PPC]) and diagnostic group as predictors of the narrative variables.

Results:

PPC predicted all narrative variables. Poorer PPC was associated with lower MLCU and MATTR as well as a higher likelihood of linguistic errors. Group differences were only observed for the error variables. Comparison to the SALT database indicated that 13 of 16 children with CAS and SSD showed a higher-than-expected proportion of linguistic errors, with a small proportion explained by individual speech errors only.

Conclusions:

The high occurrence of linguistic errors, combined with the relationship between PPC and linguistic errors in children with CAS/SSD, suggests a trade-off between speech accuracy and language output. Longitudinal studies are needed to investigate whether children with SSDs without language disorder show more language difficulties over time as linguistic demands increase.
Magnetic reconnection as an erosion mechanism for magnetic switchbacks
Authors: Suen G. H. H. , Owen C. J. , Verscharen D. , Horbury T. S. , Louarn P. , De Marco R.
Published: June 2023

Context. Magnetic switchbacks are localised polarity reversals in the radial component of the heliospheric magnetic field. Observations from Parker Solar Probe (PSP) have shown that they are a prevalent feature of the near-Sun solar wind. However, observations of switchbacks at 1 au and beyond are less frequent, suggesting that these structures evolve and potentially erode as they propagate away from the Sun. The specific mechanisms at play have not been identified thus far.

Aims. We search for magnetic switchbacks undergoing magnetic reconnection, characterise them, and evaluate the viability of reconnection as a possible channel for their erosion.

Methods. We analysed magnetic field and plasma data from the Magnetometer and Solar Wind Analyser instruments aboard Solar Orbiter collected between 10 August and 30 August 2021. During this period, the spacecraft was 0.6–0.7 au from the Sun. Using hodographs and Walén analysis methods, we tested for rotational discontinuities (RDs) in the magnetic field and reconnection-associated outflows at the boundaries of the identified switchback structures.

Results. We identified three instances of reconnection occurring at the trailing edge of magnetic switchbacks, with properties that are consistent with existing models of reconnection in the solar wind. Based on these observations, we propose a scenario through which reconnection can erode a switchback and we estimated the timescales for these occurrences. For our events, the erosion timescales are much shorter than the expansion timescale. Thus, the complete erosion of all three observed switchbacks would occur well before they reach 1 au. Furthermore, we find that the spatial scale of these switchbacks would be considerably larger than is typically observed in the inner heliosphere if the onset of reconnection occurs close to the Sun. Our results suggest that the onset of reconnection must occur during transport in the solar wind in the cases we consider here. These results suggest that reconnection can contribute to the erosion of switchbacks and may explain the relative rarity of switchback observations at 1 au.
τ Herculid meteor shower in the night of 30/31 May 2022 and the meteoroid properties
Authors: Koten P. , Shrbený L. , Spurný P. , Borovička J. , Štork R. , Henych T. , Vojáček V. , Mánek Jan
Published: May 2023

Context. A τ Herculid meteor outburst or even storm was predicted to occur by several models around 5 UT on 31 May 2022 as a consequence of the break-up of comet 73P/Schwassmann-Wachmann 3 in 1995. The multi-instrument and multi-station experiment was carried out within the Czech Republic to cover possible earlier activity of the shower between 21 and 1 UT on 30/31 May.

Aims. We report meteor shower activity that occurred before the main peak and provide a comparison with the dynamical simulations of the stream evolution. The physical properties of the meteoroids are also studied.

Methods. Multi-station observations using video and photographic cameras were used to calculate the atmospheric trajectories and heliocentric orbits of the meteors. Their arrival times were used to determine the shower activity profile. The physical properties of the meteoroids were evaluated using various criteria based on meteor heights. The evolution of the spectra of three meteors were studied as well.

Results. This annual but poor meteor shower was active for the whole night many hours before the predicted peak. A comparison with dynamical models shows that a mix of older material ejected after 1900 and fresh particles originating from the 1995 comet fragmentation event was observed. The radiant positions of both groups of meteors were identified and were found to agree well with the simulated radiants. Meteoroids with masses between 10 mg and 10 kg were recorded. The mass distribution index was slightly higher than 2. The study of the physical properties shows that the τ Herculid meteoroids belong to the most fragile particles observed ever, especially among higher masses of meteoroids. The exceptionally bright bolide observed during the dawn represents a challenge for the dynamical simulations as it is necessary to explain how a half-metre body was transferred to the vicinity of the Earth at the same time as millimetre-sized particles.
VERTICO
Authors: Roberts Ian D. , Brown Toby , Zabel Nikki , Wilson Christine D. , Chung Aeree , Parker Laura C. , Bisaria Dhruv , Boselli Alessandro , Catinella Barbara , Chown Ryan , Cortese Luca , Davis Timothy A. , Ellison Sara , Jiménez-Donaire María Jesús , Lee Bumhyun , Smith Rory , Spekkens Kristine , Stevens Adam R. H. , Thorp Mallory , Villanueva Vincente , Watts Adam B. , Welker Charlotte , Yoon Hyein
Published: June 2023

We analyse cold-gas distributions in Virgo cluster galaxies using resolved observations of CO(2-1), which traces molecular hydrogen (H2), and H I from the Virgo Environment Traced In CO (VERTICO) and VLA Imaging of Virgo in Atomic Gas (VIVA) surveys. From a theoretical perspective, it is expected that environmental processes in clusters will have a stronger influence on diffuse atomic gas compared to the relatively dense molecular gas component, and that these environmental perturbations can compress the cold interstellar medium in cluster galaxies, leading to elevated star formation. In this work we observationally test these predictions for star-forming satellite galaxies within the Virgo cluster. We divided our Virgo galaxy sample into H I-normal, H I-tailed, and H I-truncated classes and show, unsurprisingly, that the H I-tailed galaxies have the largest quantitative H I asymmetries. We also compared Virgo galaxies to a control sample of non-cluster galaxies and find that the former, on average, have H I asymmetries that are 40 ± 10% larger than the latter. There is less separation between control, H I-normal, H I-tailed, and H I-truncated galaxies in terms of H2 asymmetries, and on average, Virgo galaxies have H2 asymmetries that are only marginally (20 ± 10%) larger than the control sample. We find a weak correlation between H I and H2 asymmetries over our entire sample, but a stronger correlation for the galaxies that are strongly impacted by environmental perturbations. Finally, we divided the discs of the H I-tailed Virgo galaxies into a leading half and trailing half according to the observed tail direction. We find evidence for excess molecular gas mass on the leading halves of the disc. This excess molecular gas is accompanied by an excess in the star formation rate such that the depletion time is, on average, unchanged.
Changing the back angle of the broach cutter when machining eccentric shafts
Authors: Malneva Julia , Kuts Vadim , Beye Abdrahamane
Published: May 2023

To increase the efficiency of processing eccentric shaft necks, a method has been proposed, the essence of which is to use milling cutters when basing it along the shaft axis. It is assumed that the direction of rotation and the rotation frequency of the shaft and the broach cutter coincide, and the shaping of the eccentric shaft neck will be performed in one turn of the tool. When implementing this processing method, the key task is to create a tool, for which it is necessary to perform a set of theoretical and experimental studies aimed at developing methods for assigning its geometric characteristics and processing modes. Formulas of the initial tool surface, cutting edges, front and back surfaces of the cutter teeth are obtained. The result of modeling the installation of the plane of the front surface for one tooth and for all the cutting teeth of the cutter is shown. Using the developed software, a study was carried out of the changes in: the rear angle during milling at different values of the transverse feed Sm; the rear angle from the longitudinal feed at different values of the rotational speeds of the shaft and the milling cutter. The conducted research allowed us to establish that the teeth of the milling cutter work in various conditions. The application of the developed software will allow to determine the values of the static rear angles on the milling cutter ensuring their change within the contact with the allowance in the specified ordinates of the range.
Uniaxial compression of dry wood: experiment and modeling
Authors: Meltser Rudolf , Vasiliev Sergey , Kolesnikov Gennady , Zaharov Nikolai
Published: May 2023

The paper considers the dependence of the load on displacement during uniaxial compression of spruce wood samples with an adjustable deformation rate (1 mm/min); the water content in the samples was equal to 6.4%. The study focuses on the analysis of criteria for brittle destruction of wood and its transition to a plastic state. The concept of virtual material transformation (CoViMT) forms the basis of the research. At the idea level, this concept is a variant of the well-known equivalent material concept (EMC). An integral criterion for brittle fracture was developed. Comparison with experimental data showed that the integral criterion and the known differential criterion lead to mismatched points of brittle fracture and transition of wood to the plastic state. Therefore, it is possible to determine the boundaries of the region of plastic states with the help of these criteria. Experiments confirmed the adequacy of the criteria when compressing wood with 6.4% and 18.0% moisture content. However, the volume of studies of the problem touched upon is small, so further research is necessary to better understand the stages of deformation of wood of different species.
Preliminary results of in-vitro laboratory propagation of barberry (Berberis L.)
Authors: Chorshanbiev Farkhod , Temirov Jamshid , Borasulov Akmal
Published: May 2023

The genus Berberis vulgaris (Berberis L.) is currently found in tropical, subtropical, temperate, and cold climate zones. There is little doubt that Southeast Asia is where the majority of Berberis vulgaris' interspecies biodiversity is found. Additionally, species are widely distributed, mostly in hilly areas, and, in terms of moisture requirements, they are mesophytic and xeromesophytic plants. In this article, experiments on in-vitro propagation of Berberis vulgaris (Berberis L.) seedlings were carried out in laboratory conditions. During the experiments, the time of sterilization of the explants obtained from the Berberis vulgaris plant was determined. Different concentrations of hormones and auxins were used in several nutrient mediums for growing in artificial nutrient medium. The results depicted that the highest rate was observed in the variant, where 2ml.BAP+0.5NAA+30g sucrose+7g accounted for 87% of plant rooting rate. It was observed that the rooting rate was slightly higher in the control variant of WPM-Woody plant medium-nutrient medium than the control variant of the MS nutrient medium, which was 17%.
Entomophagous species of litter (Aleyrodidae)
Authors: Sulaymanov Otabek , Jumaev Rasul
Published: May 2023

There are several types of spider mites, some of which are specialized to feed on certain crops, and they are a major nuisance in agriculture. Predatory insects and mites, such as golden-eyes, semi-hardwings, cockroaches, and predatory mites, can successfully reduce the number of spider mites. The type of crop and the particular spider mite species have an impact on how successful these predators are. Spider mites are a frequently encountered agricultural pest, and there exist numerous types of spider mites that have adapted to feed on particular crops. In the experiment, various entomological instruments such as MBS-2, MBI-3, electron microscope Telsa-BS-613 from microscopes, and MEMMERT E05273 thermostat were used. In a study conducted in Turkey, 48 entomophagous species of greenhouse cockroaches were identified, of which 17 were found to be the primary species for controlling cockroach populations. A new species, Acletoxenus formosus Loew (Diptera: Drosophilidae), was also identified for the first time in the Turkish fauna.
Airline service quality (AIRQUAL) improvement approach for Thai Airways during the rehabilitation
Authors: Kungwola Korawin
Published: May 2023

Since the outbreak of COVID-19 in 2020, Thai Airways (THAI) and many other airlines have been suffering from significant losses and a shortage of liquidity and cash flow. Therefore, the submitted rehabilitation plan aims to completely restructure and enable THAI to become profitable again (Thai Airways, 2021). This study therefore aims to contribute a guideline for enhancing service quality for customer satisfaction in the business by using content analysis from documents, books, tables, articles and related research to examine data based on the Airline Service Quality (AIRQUAL), a crucial component for all service providers, but particularly in the airline industry. This study in line with the forecast of the International Air Transport Association (IATA) and The Civil Aviation Authority of Thailand (CAAT) that the aviation industry will recover to normal within the next few years and the Thai national strategy (2018-2037) on developing future industries and services in order to be key growth engines designed to push Thailand to become a developed country through advanced innovations and technologies and also serves as a foundation for further studies and could possibly accelerate existing research on airline service quality and customers' airline selection decisions.
Bionics in architecture and geometric modelling of thin shell surfaces
Authors: Goncharova Tatyana
Published: May 2023

In the scientific problem of design and calculation of thin elastic shells in the modern world, certain advances have already been made in mathematical and technical theory, based on hypotheses, experimental data, calculation equations and engineering calculations. Only such shells, which are designed based on calculation and used in building and technical constructions, can be referred to a small number of geometric surfaces. When designing thin shells, surfaces of rotation (sphere, torus, paraboloid, ellipsoid of rotation) and transfer surfaces (hyperbolic and elliptic paraboloid, circular transfer surface) are used. Trends in construction and engineering seek to apply complex mathematical models in harmony with environmental policy and the environment. This leads to the necessity of studying the influence of parameters when modeling an object on the parameters and properties of the created construction. Possessing a more complex shape the shells are realized as a result of experiment. As a result of active introduction of information technologies it became possible to introduce cardinally new methods in the application of geometric thin-walled spatial structures for the design of building and technical constructions, a number of machine-building parts. Modern analytical calculation programs and computer-aided design systems (Compass, Autocad, Archicad, etc.) make it possible to create a geometric projection model of a structure on the basis of primitives, to perform structural and static calculations of a project in an elementary manner. The solution of such layout problems is made possible with the support of computer geometry based on descriptive and analytical geometry, linear and vector algebra, mathematical analysis, and differential geometry. Modern bionics and environmental policy relies on the latest methods of mathematical modeling of architectural projects with a wide choice of computational and graphical software for calculation and 3d visualization.
Import substitution in modern conditions: priority directions and implementation problems
Authors: Nikitina Natalya
Published: May 2023

This article focuses on the concept of import substitution, which involves the replacement of imported goods and services with domestic alternatives. In the context of economic trends such as increasing prices for imported goods, difficulties with their supply, and the need to strengthen national economies, import substitution has become a relevant topic in many countries, including Russia. The article presents an author's definition of import substitution, as well as key directions, problems, and prospects of import substitution in modern conditions. Additionally, the article provides an algorithm for effective import substitution in Russian companies. The key concepts discussed in the article include the importance of domestic production and the development of domestic industries, as well as the challenges associated with implementing import substitution policies. Overall, this article offers valuable insights into the concept of import substitution and its potential role in strengthening national economies. The information presented in this article may be particularly useful for policymakers, economists, and business leaders who are interested in developing effective strategies for import substitution in their respective countries or industries.
Transformation of the aggregate subject of activity in the context of digitalization of education
Authors: Terekhin Vyacheslav , Korochentseva Anna
Published: May 2023

The criteria for academic success are academic (educational) performance, reflecting the level of educational achievement, as well as interest, motivation, quality and methods of mental work (activity, tension, pace, duration, consistency, the ratio of rational and irrational methods of work, etc.). In our work, we examined how the above factors affect the success of students' learning activities in different forms of organizing the activities of the study group. Two main forms are considered: distance learning and full-time. The study allows us to trace the role of sociopsychological factors affecting the transformation of the aggregate subject of activity in the context of digitalization of education. The study involved two groups of university students. The first group: students of 1-4 courses, who have a distant form of organizing the activities of a group of 60 people. The second group: students of 1-4 courses, who have a full-time form of organizing the activities of a group of 60 people. The total sample size was 120 people. Methods used: Study method motivation learning at the university T.I. Ilyina; Test - questionnaire "Motivation for success and fear of failure" by AA Reana; Methodology studyingI social and psychological self-assessment of the team of O. Nemov; Questionnaire for the diagnosis of the ability to empathy. The research carried out confirms the proposed assumption that the form of organization of the group's activities significantly affects the success of its educational activities. Therefore, we can say that students with a full-time form of organizing activities are more successful in their educational activities than students with a distant system, since they strive to a significant extent to gain knowledge, master a profession, achieve success, and be within the team. to share his interests, to maintain friendly and comradely relations with each other than students with a distant form of organization of activities, who strive to be outside the team, since they may regard their classmates as potential competitors who can hinder the achievement of success in their educational activities.
Reduction of occupational accidents at industrial enterprises
Authors: Kovtun Maksim , Galkina Elena
Published: May 2023

High rates of occupational injuries and diseases lead to significant financial losses for companies and the state. The article considers a systematic approach to solving this problem and proposes ways to reduce the level of occupational injuries at production enterprises.
Retraction Note: Features of the use of digital Risk management tools in the capital market and the organized commodity market
Authors: Parii Liudmyla , Makarenko Tetiana , Abuselidze George , Slobodianyk Anna , Mohylevska Olga , Sidak Ihor
Published: May 2023

The Guest Editor(s) and the authors have retracted this article.
Actually, due to an unintentional oversight, the authors failed to disclose a conflict of interest that might have affected interpretations of the work and recommendations by peer reviewers.
The Publisher approved to the retraction.
Improvement of the machine for wool scutching for obtaining ecologically clean fiber
Authors: Ismoyilov Furkat , Kuldashev Elyor , Abrorov Akbar , Ismoyilov Ibrokhim , Bozorov Rustam
Published: June 2023

The article covers natural wastes emitted from wool in the loosening process. The results of experimental research of the amount of ecologically clean fiber are shown. Analytical research of scientific and technical information about technologies and technical means of primary processing of wool, as well as previous research in this area has been carried out. Improvement of the technological parameters of machines for loosening wool by adapting them to the characteristics of local wool has been studied. The dependence of the separation of contaminants from the composition of wool on the design of the fire bar of the fire grate of the column structure and the density of the product in the working chamber has been determined. Based on the results obtained, it has been determined that the use of an improved wool loosener improved cleaning efficiency. It has been determined that during the testing process, an experimental sample showed high performance. It was determined that after the peg drums, the porosity of the wool doubled, and the density of the wool decreased by half. The development of a new design of a loosening machine for loosening and cleaning wool fibers has been shown in technological schemes.
Justification of technological solutions for irrigation with electrified circular sprinkler machines
Authors: Zhuravleva Larisa , Semenova Kristina
Published: June 2023

Improving the quality of irrigation can be achieved by changing the irrigation rate in accordance with the level of moisture reserves of the field areas at the time of watering, eliminating over-watering and water erosion of soils. The purpose of the presented research was to improve the technological process of irrigation with wide-reach circular sprinkler machines, which ensures the reduction of unproductive water losses, improving the quality of irrigation. The article discusses theoretical studies of irrigation technology with circular sprinkler machines, optimized irrigation modes. Based on the conducted experimental studies, a comparative assessment of the work of sprinklers according to the standard and proposed technology, taking into account the adjustment of irrigation norms, is presented. Comparison of standard and proposed irrigation technologies with sprinkler machines showed that irrigation using the proposed technology allows saving irrigation water up to 10%.
The effectiveness of the use of Aminozol and Lebozol on the yield of winter garlic
Authors: Dyikanova Marina , Vorobyev Michael , Terekhova Vera , Bocharova Maria , Bogdanova Varvara
Published: June 2023

This article discusses the results of an experiment to grow hardneck garlic in the Moscow region. The study used Russian hardneck garlic varieties of Odintsovsky Jubilee and Streletz and found that they had high flavor qualities and were recommended for cultivation in the non-black soil zone of Russia. The experiments were conducted in 2021-2022 at the «Horticulture and vegetable growing» of Gardening and Horticulture named after V.I. Edelstein. The results showed that the double application of organic fertilizer of Aminozol and Lebozol-Full Care during the vegetative period led to an increase in yield for all tested varieties. On the Odintsovsky Jubilee variety, the organic fertilizer Aminozol had a positive effect on increasing the average mass of bulbs by 26.9% compared to the control and 13% compared to the treatment with Lebozol-Full Care. The study also noted an increase in the average mass of bulbs due to the mass of each clove. The variety Streltets when treated with Aminozol and Lebozol-Full Care fertilizers increased the mass of the bulb by 17.7% and 10.9% compared to the control. Research has established a positive effect of organic Aminozol Lebozol - Full Care fertilizers on the productivity and yield of winter garlic.
Shortenings based on hydrogenated cotton oils
Authors: Sabirova Nargiza , Sadikova Mukhayo
Published: June 2023

A new composition of fat shortening based on hydrogenated cottonseed oil with different iodine numbers has been proposed. Palm oil and solid animal fat are used as an additional fat component. Changes in the content of solid triglycerides depending on their melting point were determined. Hydrogenated cottonseed oil is obtained by saturating cottonseed oil on dispersed and stationary catalysts. The plasticity range of shortenings was studied depending on the content of solid triglycerides. Shortening with hydrogenated cottonseed oil as hard fat, tempered at a temperature of 30.1°C, when measuring the studied parameters, are obtained close to shortening with palm oil, tempered at 26.7°C.
Application of digital marking for confectionery for sustainability life cycle of food products
Authors: Cherkasova Elmira , Golinitsky Pavel , Antonova Uliana , Vergazova Julia , Petrovsky Dmitriy
Published: June 2023

Currently, one of the priorities of the food industry is to ensure the quality and safety of products. Food industry enterprises produce products that meet the requirements of regulatory and technical documentation and consumer preferences. But often it is at the stages of distribution, storage and sale that quality indicators deteriorate. Failure to comply with the terms and conditions of delivery of products leads to defects, and such products will not be safe for consumption. In this regard, it is necessary to find such methods and means of labeling that would preserve the nutritional value and consumer properties throughout the entire life cycle of products. The work is devoted to the use of modern labeling methods to preserve consumer properties at the stages of product distribution and the economic costs of implementation. It is proposed to use a QR code or radio frequency tags NFC-PASS, which record information about the Internet resource that contains data about this particular product.
Smart eco-friendly refrigerator based on implementation of architectures of convolutional neural networks
Authors: Alekhina Anna E. , Dorrer Mikhail G. , Ovchinnikov Alexander G.
Published: June 2023

The article discusses the solution to the problem of choosing the architecture of a convolutional neural network for use in the computer vision of a smart vending refrigerator. Comparative tests decided the architectures of convolutional neural networks YOLOv2, YOLOv3, YOLOv4, Mask R-CNN, and YOLACT ++ on a standard MS COCO dataset, and then on datasets formed from images of typical smart refrigerator products. As a result of comparative tests, the best performance was demonstrated by the YOLOv3 architecture, trained based on a normalized dataset, supplemented with examples with complex intersections of samples without preprocessing examples. The obtained results substantiated the architecture used in computer vision of serially produced "smart" vending machines.
Study of the working process of a dual-fuel hydrogen engine
Authors: Kuleshov Andrey , Kuleshov Alexey , Markov Vladimir , Karpets Fedor , Yumagulova Venera , Nurullin Aidar
Published: June 2023

The relevance of the article is due to the need to replace petroleum fuels with motor fuels obtained from alternative raw materials. Hydrogen is considered as a promising alternative fuel. The use of hydrogen as a motor fuel makes it possible to solve the problem of a cardinal reduction in carbon dioxide emissions into the atmosphere. Using the DIESEL-RK software package, computational studies of the effect of hydrogen supply on the working process of the gas-diesel engine D-245 were carried out. The diesel cycle of the engine and its gas-diesel cycle were calculated with hydrogen supplies equal to 5, 10, 20, 40, 60 and 80% (taking into account the difference in the heat of combustion of the studied fuels). The maximum effective efficiency of a diesel engine is achieved when 40% hydrogen is supplied to the combustion chamber. In this case, compared to operation only on petroleum diesel fuel, the effective efficiency of the diesel engine increased by 7%.
Studying the sorption properties of adsorbents obtained on the basis of plant waste
Authors: Ubaydullayeva Navruza N. , Salikhanova Dilnoza S. , Karabayeva Muslima I.
Published: June 2023

In Uzbekistan theoretical and practical results are being achieved in the creation of adsorbents with a high sorption capacity based on natural resources, in particular plant waste, and their adsorption purification from residues of organic substances that are part of wastewater. The characteristics of the prepared carbon sorbent obtained on the basis of some optimal formulations using small samples of charcoal obtained from activated walnut and almond pods using an iodine composition were studied. The objects of the study were walnut and almond shells. The results of analyses for checking the adsorption activity of coal for iodine and determining the number of moles are presented in the form of a table.
Identification of the self-oscillating mode in metal-cutting machines in the production of agricultural machinery
Authors: Molchanov Alexander A. , Zayatzev Andrey N. , Alexandrova Yulia P.
Published: June 2023

The production of modern agricultural machinery includes various technological chains machining workshops, consisting mostly of turning and milling machining centers. The influence of self-oscillations on the dynamic characteristics of mechanisms for various purposes is due to the increased requirements for the quality and reliability of products of modern machines and units. Timely detection and reduction of the impact of oscillatory processes makes it possible to qualitatively optimize the design of mechanisms. A special role in the process of operation is exerted by self-oscillations on metal-cutting machines in the processing of materials. The consequence of the self-oscillatory process is a violation of the performance of a metal-cutting machine, expressed in a parametric (accuracy) failure. In this paper, the possibility of using parametric spectral analysis for the early identification of a self-oscillating process in hexapod machine tools was evaluated, for which the objective function was determined, i.e. the value of the damping coefficient of the dynamic system.
L’angoisse, l’objet et l’actualité des névroses actuelles
Authors: Dimitriadis Yorgos
Published: May 2023

Dans ce texte j’avance certaines hypothèses sur la raison pour laquelle Freud revient sur la question de l’angoisse en 1926 avec son texte Inhibition symptôme, angoisse et sur le pourquoi il n’utilise plus le terme de « névroses actuelles » à partir de cette date. Les réponses à ces questions peuvent, je pense, trouver leur réponse dans la postérité, à savoir la reprise de ce texte de Freud par Lacan dans son séminaire sur l’angoisse. Par ailleurs, Lacan dans ce même séminaire va découvrir l’objet petit a qu’il a considéré comme sa seule découverte en psychanalyse. Cet objet petit a a une place logique celle qui se désigne par ce qui reste et qui, donc, échappe à des opérations de maîtrise par le « Un » de l’image qui fait unité et par les « Uns » des signifiants qui se répètent sans arriver à donner un sens final. Or, la question de ce qui fait « Un » par rapport à l’angoisse traverse les textes de Freud sur l’angoisse de 1916 à 1933. La place de cet objet, comme produit d’une séparation de l’Autre, voire de l’organe, en deçà de l’Œdipe, sert à Lacan de référence pour le passage du « Un » au « multiple », des Uns à ce qui reste. En prolongeant cette réflexion, il dégagera dans son séminaire Encore, au travers ses formules de sexuation, la logique du « pas tout » pour laquelle il n’y a plus le « Un » de l’exception. Une jouissance Autre, non phallique, y trouve sa justification.
Determining the effectiveness of countries in combating pandemics: COVID-19 case
Authors: Keskin Zeynep Büsra , Delice Elif Kiliç
Published: June 2023

The aim of this study is to develop a multidimensional integrated efficiency analysis (MDIEA) model to be implemented when a pandemic breaks out. The first phase of the model involved the determination of input and output criteria that might affect the course of combat against the pandemic. Two methods were employed in the second phase: the CRITIC method, which uses objective values to determine criteria weights; and, the Fuzzy SWARA method, which is based on subjective values and decision-makers opinions due to the assumption that the criteria might not be determined precisely and completely. The subjective and objective criteria weights obtained from these two methods were combined using the SOWIA method so that integrated criteria weights could be determined. In the third phase, three separate efficiency rankings were obtained using EATWOS, OCRA, and FDEA methods depending on the criteria weights. In the fourth phase, these efficiency rankings were combined by employing the TPOP method to obtain one single precise ranking. The previous studies mostly analyzed the efficiency of countries by using one single efficiency method, where, the model proposed in this study determines countries’ efficiency by employing three different efficiency analysis methods together; it makes use of different points of view and different calculation procedures of different methods. As another aspect, rural population ratio, diabetes prevalence rate, proportion of the population over 65 years old, number of intensive care beds and number of vaccine doses are study-specific criteria, unlike other studies. The present study is expected to contribute to the literature since it is the first study that proposes a model to evaluate the performances of countries during pandemics. The proposed model was implemented to assess OECD countries’ efficiency in their fight against COVID-19, which was a prevailing crisis worldwide. When all the obtained results are considered, it is difficult to claim that one single criterion is effective in combating the pandemic. For an effective fight against the pandemic, it is of great importance to keep the rate of infection and therefore the number of infected people under control. It is also possible for countries to change their policies or adopt stricter policies to contain the spread of the virus.
Exokrines Pankreaskarzinom – Welche Neuerungen bringt die neue S3-Leitlinie?
Authors: Seufferlein Thomas , Kestler Angelika
Published: May 2023

Was ist neu?

Familiäre Belastung Definition der Zielgruppe, der genetische Untersuchungen zur Abklärung eines erhöhten Pankreaskarzinomrisikos angeboten werden soll.

Präoperative Ausbreitungsdiagnostik Bei einem potenziell resektablen Pankreaskarzinom soll zusätzlich zu einer Dünnschicht-CT sowie zum Ausschluss von Lebermetastasen eine Leber-MRT oder alternativ eine FDG-PET-CT durchgeführt werden.

Chirurgische Therapie Die rein anatomischen Kriterien hinsichtlich der Resektabilität eines Pankreaskarzinoms werden um biologische Faktoren (z.B. CA19–9-Wert) und den körperlichen Allgemeinzustand (ECOG) erweitert. Es besteht ein Zusammenhang zwischen der Zahl an Pankreasresektionen an einer Institution und der Letalität, sodass erstmals eine Mindestfallzahl von ≥ 20 Pankreasresektionen für ein Zentrum empfohlen wird.

Adjuvante und neoadjuvante nicht chirurgische Therapie Aktuell wird bei gutem ECOG-Performance-Status eine adjuvante Therapie mit mFOLFIRINOX empfohlen. Eine neoadjuvante Therapie wird bei einem grenzwertig (borderline) resektablen Pankreaskarzinom empfohlen. Falls das Pankreaskarzinom als lokal fortgeschritten eingeschätzt wird, soll eine initiale Chemotherapie erfolgen. In beiden Fällen (borderline und lokal fortgeschrittenen Tumoren) wird bei stabiler Erkrankung eine chirurgische Exploration empfohlen.

Palliative Therapie des Pankreaskarzinoms Vor allem Patient*innen mit einer guten körperlichen Leistungsfähigkeit profitieren von einer Kombinationschemotherapie.

Therapiestrategien in molekularen Subgruppen Bei Nachweis einer BRCA1/2-Keimbahnmutation sollten Patient*innen eine platinhaltige Kombinationschemotherapie erhalten und können von einer Erhaltungstherapie mit einem PARP-Inhibitor profitieren. Fitten Patient*innen sollte bei Progress des Tumors eine Zweitlinientherapie angeboten werden. Eine Strahlentherapie, alleinige Radiotherapie oder Radiochemotherapie kann bei lokal fortgeschrittenem Pankreaskarzinom ohne Hinweis auf Fernmetastasen angeboten werden.
Intima-Media-Dicke und atherosklerotische Plaques der Arteria
carotis
Authors: Schminke Ulf , Allendörfer Jens
Published: May 2023

Kardiovaskuläre und zerebrovaskuläre Erkrankungen gehören
weltweit zu den häufigsten Todesursachen. Zur frühzeitigen
Identifizierung und präventiven Behandlung von asymptomatischen
Hochrisikopersonen ist eine verlässliche Vorhersage des individuellen
Risikos eine essenzielle Voraussetzung. Der vorliegende CME-Artikel beleuchtet
den Stellenwert von Biomarkern subklinischer Atherosklerose für die
individuelle Risikoprädiktion.