bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthetic zeolite derived from coal fly ash decorated with magnetic alginate bead: Application to detoxification of arsenic and vanadium
Authors: Swistun Eugeniusz , Sobczyk Maciej , Kumar A. Santhana Krishna , Tseng Wei-Lung , Bajda Tomasz
Published: August 2023

Heavy metal toxicity is highly demanding and challenging to clean up the pollutants. To recover the issues mentioned above, we propose a hydrothermal synthesis of zeolite (NaX-UP). Further surface modification by poly-ethylenimine (PEI) could turn to be amine-modified zeolite nanosheets (zeolite NSs) possessed plenty of hydroxyl and amino groups (Al-O, Si-O-Si, Si-OH and NH2) on their surface, decorated with magnetic nanoparticles (Fe3O4 NPs), that are enabled to bridge with inter and intramolecular hydrogen bonding an additionally electrostatic interaction might be a significant role. Further, this can be converted into magnetic bead crosslinking with sodium alginate immersed in an excess calcium chloride solution. The-as formed Fe3O4 NPs decorated amine modified zeolite alginate bead denoted to be (Fe3O4 NPs decorated @PEI-zeolite NSs alginate bead) upholding a significant advantage would aim to clean up the anionic pollutants are [As(V) & V(V)] from an aqueous solution.
Pendekatan Daya Tarik Destinasi Dalam Pengelolaan Desa
Authors: Junaidi Ilham , Ang Gavrilla Kezia
Published: August 2023

There is limited literature that examines villages in the perspective of destination attractiveness. The purpose of this research is to 1) describe the tourism potential of the village; 2) analyse the role of stakeholders in promoting the village as a tourism destination; 3) describe the steps or efforts to develop the village as a tourism destination from the perspective of destination attractiveness. A qualitative approach guides the author in analysing the attractiveness of destinations in Hila village. Data collection was carried out through interviews, observation and literature studies in April 2022. The results showed that Hila village has natural and cultural potential to become a destination product. However, local stakeholders tend to only focus on Amsterdam as a rural tourism icon. Local organisation (Pokdarwis) as rural tourism manager faces challenges in carrying out the duties and roles of destination managers, including integrating elements of destination attractiveness. This study outlines the urgency of destination attractiveness in managing it as a tourism destination. This research contributes to strengthening the concept of destination attractiveness as a strategy for managing natural and cultural potential through packaging potential into tourism destination products. Destination attractiveness can be an effective strategy if Pokdarwis, the government and the community become integral to developing rural tourism. This research fills in the tourism literature on analysing tourist villages and implementing practical steps for managing destinations from the perspective of destination attractiveness.

Keywords: Destination attractiveness; Hila village; tourism village; village management; tourism stakeholder
Munus: inmunidad y comunidad en la arquitectura de los afectos
Authors: Ibarra Eliessetch María Ignacia , Carrubba Luca
Published: August 2023

¿Inmunidad? 
¿Comunidad?
Me pregunto cómo ser inmunes
Sin vincularnos
Sin cuidarnos,
Sin entretejernos
No hay inmunidad sin comunidad
Aspect-Category based Sentiment Analysis with Unified Sequence-To-Sequence Transfer Transformers
Authors: Thin Dang Van , Nguyen Ngan Luu Thuy
Published: August 2023

In recent years, Aspect-based sentiment analysis (ABSA) has received increasing attention from the scientific community for Vietnamese language. However, most previous studies solved various subtasks in ABSA based on machine learning, deep learning and transformer-based architectures in a classification way. Recently, the release of pre-trained sequence-to-sequence brings a new approach to address the ABSA as a text generation problem for Vietnamese ABSA tasks. In this paper, we formulate the Aspect-category based sentiment analysis task as the conditional text generation task and investigate different unified generative transformer-based models. To represent the labels in a natural sentence, we apply a simple statistical method and observation of the commenting style. We conduct experiments on two benchmark datasets. As a result, our model achieved new state-of-the-art results with the micro F1-score of 75.53% and 86.60% for the two datasets with different levels for the restaurant domain. In addition, our experimental results achieved the best score for the smartphone domain with the macro F1-score of 81.10%.
Criminal Legal and Procedural Problems and Prospects for Improvement in Preventing and Combating Money Laundering. Summary of the Doctoral Thesis
Authors:   ,   Rīga Stradiņš University, Neimane Liene
Published: August 2023

The legitimate purpose of confiscation of criminally acquired property can be defined as the removal of criminally acquired property from legal civil circulation in order to prevent its further circulation and the commission of further criminal offences, as well as to reduce the financial interest in committing criminal offences. During the research of court practice and the latest trends, the author has come to the conclusion that in order to recognize property as criminally obtained, changes in the current regulatory framework are necessary, as well as time and understanding in the appropriate application of the relevant norms in practice. The work examines current problems and trends in cases of money laundering. In order to decide the question of the legal origin of the property, there are often cases when the presented evidence is evaluated subjectively by the parties leading the process, when in fact there is no evidence base on the criminal origin of the funds. In the Latvian legal system, in any criminal offense resulting in the acquisition of criminal assets, or predicate crimes, confiscation of property or money is provided for, if there is sufficient reason to suspect that this property was obtained as a result of a criminal offense, that is, without a conviction, thus deductively searching for the subject of the criminal offense and actually bypassing the purpose of the Criminal Procedure Law, which provides for such a criminal procedure procedure that ensures the effective application of the norms of the Criminal Law and the fair settlement of criminal legal relations without unjustified interference in a person's life, because as practice shows, the actual procedure does not provide an effective mechanism, but unreasonably violates the rights of the person. The topic of the doctoral thesis “Criminal legal and procedural issues of prevention and combating of money laundering and prospects for against money laundering” was chosen, taking into account that in everyday work and the learning process, it is not uncommon to encounter cases where property or some other material value is confiscated in cases simply because there is no understanding or adequate education, knowledge and practical experience, which leads to unreasonable and subjective decisions, thus recognizing property as criminally obtained and confiscating it for the benefit of the state. With such actions, a risk is also created for the country itself, as various types of claims are often raised, including for damages in connection with human rights violations found by the European Court of Humanities, which is already a signal to the Latvian legislature about the need to create a more effective mechanism for confiscation of criminally obtained funds.
Noziedzīgi iegūtu līdzekļu legalizācijas novēršanas un apkarošanas krimināltiesiskā un procesuālā problemātika un pilnveidošanas perspektīvas. Promocijas darbs
Authors:   ,   Rīgas Stradiņa universitāte, Neimane Liene
Published: August 2023

Noziedzīgi iegūtas mantas konfiskācijas leģitīmo mērķi var definēt kā noziedzīgā veidā iegūta īpašuma izņemšanu no legālās civiltiesiskās apgrozības, lai nepieļautu tā turpmāku apriti un tālāku noziedzīgu nodarījumu izdarīšanu, kā arī – lai mazinātu finansiālo ieinteresētību veikt noziedzīgos nodarījumus. Tiesu prakses un jaunāko tendenču izpētes laikā autore ir secinājusi, ka, lai atzītu mantu par noziedzīgi iegūtu, ir nepieciešamas izmaiņas šā brīža normatīvajā regulējumā, kā arī nepieciešams laiks un izpratne attiecīgo normu atbilstošā piemērošanā praksē. Darbā tiek aplūkotas aktuālās problēmas un tendences noziedzīgi iegūtu līdzekļu legalizācijas lietās. Lemjot jautājumu par mantas legālo izcelsmi, bieži rodas gadījumi, kad iesniegtie pierādījumi no procesa virzītāju puses tiek vērtēti subjektīvi, faktiski iztrūkstot pierādījumu bāzei par līdzekļu noziedzīgo izcelsmi. Latvijas tiesiskajā sistēmā jebkurā noziedzīgā nodarījumā, kura rezultātā tiek iegūti noziedzīgi līdzekļi, jeb predikatīvajos noziegumos ir paredzēta mantas vai naudas konfiskācija, ja ir pietiekams pamats aizdomām, ka šī manta iegūta noziedzīga nodarījuma rezultātā, tas ir, bez notiesājoša sprieduma, tādējādi deduktīvi meklējot noziedzīgā nodarījuma subjektu un faktiski apejot Kriminālprocesa likuma mērķi, kas paredz tādu kriminālprocesa kārtību, kas nodrošina efektīvu Krimināllikuma normu piemērošanu un krimināltiesisko attiecību taisnīgu noregulējumu bez neattaisnotas iejaukšanās personas dzīvē, jo, kā pierāda prakse – faktiskā kārtība nenodrošina efektīvu mehānismu, bet nepamatoti pārkāpj personas tiesības. Promocijas darba temats “Noziedzīgi iegūtu līdzekļu legalizācijas novēršanas un apkarošanas krimināltiesiskā un procesuālā problemātika un pilnveidošanas perspektīvas” izvēlēts, vadoties no tā, ka ikdienas darbā un mācību procesā nereti nākas sastapties ar gadījumiem, kad lietās tiek konfiscēta manta vai kāda cita materiālā vērtība tikai tāpēc, ka nav izpratnes, atbilstošas izglītības, zināšanu vai praktiskās pieredzes, kas noved pie nepamatotiem un subjektīviem nolēmumiem, tādējādi atzīstot mantu par noziedzīgi iegūtu un konfiscējot to valsts labā. Ar šādām darbībām tiek radīts risks arī pašai valstij, jo bieži vien pret valsti tiek celtas dažāda veida prasības, tai skaitā par zaudējumu atlīdzināšanu saistībā ar Eiropas Cilvēktiesību tiesas konstatētajiem cilvēktiesību pārkāpumiem, kas jau ir signāls Latvijas likumdevējam par nepieciešamību veidot efektīvāku noziedzīgi iegūtu līdzekļu konfiscēšanas mehānismu.
THE COMMUNICATIVE APPROACH TO FOREIGN LANGUAGE LEARNING IN THE CONTEXT OF HIGHER EDUCATION QUALITY ASSURANCE
Authors: Koliada Еlina , Kalynovska Iryna
Published: August 2023

The article is focused on a communicative approach to learning a foreign language by the seekers of a higher education degree of the third (educational and research) level of higher education in the context of higher education quality assurance. The article includes a review of the main expected results of higher education quality assurance, the main features of the communicative approach to learning a foreign language and the analysis of its application. The research material is taken from the coursebook Speakout 2nd Edition (Upper Intermediate) published by Pearson Education. The coursebook corresponds to CEFR, an internationally recognized standard. It comes with access to Pearson’s MyEnglishLab, an online platform with additional practice activities. A high-quality textbook is one of the key factors of higher education quality assurance, which provides the creation of appropriate conditions for personal and professional development of seekers of a higher education degree, the successful implementation of their educational goals and achievement of planned learning outcomes. The communicative approach involves the effective use of the English language in the educational process for the purpose of communication, exchange of knowledge in oral and written forms, sharing thoughts and information. It also aims at the formation and development of skills in all types of speech activity, mastering effective communication strategies in various types of intellectual and practical activities of seekers of a higher education degree, increasing their interest in the subject, their awareness of the English language as a means of international communication in the conditions of European integration and globalization.
THE PROBLEM OF GRAPHIC, PHONETIC AND LEXICAL CROSS-LANGUAGE INTERFERENCE IN PRACTICE OF TEACHING THE UKRAINIAN LANGUAGE IN A TURKISH-SPEAKING AUDIENCE
Authors: Bondar Mariana
Published: August 2023

The article deals with the study of the influence of interlingual interference in the practice of teaching the Ukrainian language in a Turkish-speaking audience. The research was carried out on the material of typical graphic, phonetic and lexical errors, selected as a result of long-term observations of the speech of Turkish-speaking students who begin to learn the Ukrainian as a foreign language (levels A-1, А-2, B-1). Attention is focused on the systemic, structural (graphic, phonetic, lexical, morphological, syntactic, etc. levels) and multifaceted (linguistic, translational, linguodidactic) nature of the studied language phenomenon. Typical graphic, phonetic and lexical errors caused by the influence of interlingual interference are classified, which allows to make the necessary accents in the teacher's work in order to prevent possible errors. The main directions of the teacher's work with graphic, phonetic and lexical material are outlined according to the types of errors. Examples of the destructive and constructive influence of cross-linguistic interference in the process of teaching Ukrainian as a foreign language are given. Special attention is paid to the phenomenon of interlinguistic homonymy (“false friends of the translator”). Various types of cross-linguistic homonyms have been established according to the matching options (in the sound of the original forms of words, the sound of a single word and word combination or sentence, in certain grammatical forms, common words with proper names, different parts of speech, only in writing under the condition of different emphasis, one from the meanings of polysemous word, etc.) Methodical advices are given to teachers for working in Turkish-speaking audience, taking into account the peculiarities of the Turkish language system. Further directions of research and their prospects are outlined.
INTERPERSONAL COMMUNICATION OF TEACHERS IN TEACHING FOREIGN LANGUAGES AS LINGUISTIC CIRCULATION WITH A COMMUNICATIVE APPROACH
Authors: Borzenko Oleksandra
Published: August 2023

On the basis of the conducted research, it was established that the teaching of foreign languages and its success are determined by the level of communicative competence of teachers. Mastering communication as a linguistic circuit of a communicative approach allows you to avoid conflicts, improve your art of communicative behavior, correctly express your thoughts, defend your position, which contributes to social success, maximum self-realization. It is noted that a high level of social and intercultural mobility encourages people to communicate more often. Communication is one of the necessary and important conditions for the development and formation of society and any individual activity. Often "communication" is equated with "verbal interaction", but these concepts differ from each other. Attention is drawn to the fact that in the process of pedagogical activity, teachers of foreign languages should take into account various aspects of communication, its features, but in order to become a master of foreign language communication, it is necessary to have qualities that are important for interpersonal relations. The list of qualities that should be a kind of reference point for teachers in communication is considered: what to strive for, what traits to educate, cultivate not only in oneself, but also in students. It was determined that the formation of highly qualified teachers of foreign languages is possible under the conditions of formed interpersonal communication, which depends on individual characteristics, pedagogical experience, professional competence, which involves a combination of knowledge from the methodology of teaching foreign languages, linguistics, sociology, psychology, cultural studies, etc. In other words, each teacher is characterized by his own communication, which is unique and unrepeatable. Several functions performed by communication in today's information-rich society are noted. The views of scientists on the problem of communication were analyzed and conclusions were drawn.
LINGUISTIC AND COUNTRY STUDIES COMPETENCE OF THE TRANSLATOR
Authors: Rybachok Svitlana , Duda Oleksanra
Published: August 2023

The article considers the definition and components of the concept of translation competence, describes the concept of linguistic and country studies competence as a component of translation competence and describes its components. It is summarized that the modern concept of translation competence is defined as a dynamic combination of knowledge and practical skills to transfer information from one language to another, taking into account the differences between the two language systems, communicative situations and cultures. It is stated that translation competence is multifaceted, contradictory, dynamic and complex. It consists of different types of competences due to the translation types. The linguistic and country competence is one of the important components of translation competence and is defined as a set of socio-cultural information on the history, geography, economy, literature, norms of behavior, traditions, customs and culture realized by the cultural vocabulary of the language. The set of knowledge that forms the linguistic and country competence of a translator is summarized. The main skills that include linguistic and country studies competence are described, including the ability to identify the characteristic historical, geographical, national, and cultural features of the language communities of the country, the ability to operate cultural vocabulary; the ability to analyze dialectal and social variants of the language and describe the language situation. It is stated that linguistic and country studies information is crucial for the formation of translators' professional skills and understanding of the social and cultural significance of their profession in intercultural communication.
SPACE CHARACTERISTICS OF FICTIONAL WORLD OF POETIC COLLECTION “JOLLY CEMETERY” BY VASYL STUS
Authors: Tkhoruk Raisa
Published: August 2023

The article deals in problem with constructing of space of fictional world in texts of collective poems Jolly Cemetery by Vasyl Stus (1971), and some parameters of poetics of the space modeling (imagenary, genre, composition). Radical points of interest to topography of space and local specifics of territories are: total elimination of space markers for creating mythical universal (here and everywhere) and detailed presentation of landscape or interier in some autobiographycal poems. As result of research three types of space modeling are describes. The first model is one-dimensional cosmos of absurd soviet every-day life described in narrative poetry. The second ones proposes two-dimensional world in texts of accumulative composition: physical space of human existence (as variant of it: human body/soul) and inner space of meditation, or memoirs of bygone days, or visions and dreams. Sometimes accumulative fragments are constructed to be a separate locus full of things and inhabitants (subterranian reservuar). Their forms are allegorical emblems or narrative episodes on private, political or hystorical motifs. The third model is metaphysical poetic proposition of configuration of three locis planis (three worlds) and man’s ability to move from one to another. Symbol of jolly cemetery and status of dead person is correspondent with one-dimentional world of soviet peoples’ life; and overcoming repressions and control by power authority, preserving of self and human reactions are related with two other space models.
THE EXTRALINGUAL PECULIARITIES OF AMERICAN POLITICAL DISCOURSE
Authors: Zablotskyi Yurii
Published: August 2023

American political discourse continues to arouse considerable interest among scholars of various disciplines, and constant emergence of new publications on this topic is a strong evidence for that. The prerequisite for such popularity to this type of speech activity is, on the one hand, the use of advanced communicative technologies of language nature, and, on the other hand, the outstanding personalities of the US politicians themselves. Undoubtedly, the main way to wage a political struggle with opponents for the favor of voters is to use various linguistic means: communicative strategies and tactics, stylistic devices, lexical units with pragmatic potential inherent at the semantic level, prosodic elements. However, when composing these elements in order to realize speakers’ communicative intentions, politicians and their speechwriters should take into account a number of extralinguistic factors historically formed by American society, which significantly affect the construction of political texts. The purpose of the article is to identify, describe and systematize such factors. The material for the analysis is the corpus of election speeches of the main candidates for the US presidency in 2020, Joe Biden and Donald Trump compiled from texts taken from the website The American Presidency Project. Speech processing, lexical items search, and access to context have been carried out using the corpus management software AntConc 3.4.4. In order to identify the relationship between extra-linguistic factors and the means of realizing their influence on the recipients, pragmatic and contextual analyzes of election speeches have been applied. The scientific novelty of the work lies in the identification and description of a complex of socio-cultural, historical and technological factors of a non-linguistic nature that influence the selection of tactics, topics and vocabulary of US political processes participants.
Influence of the cycling campaign CITY CYCLING on cycling behaviour in Germany
Authors: Lißner Sven ,   Technische Universität Dresden, Professur für Verkehrsökologie, Huber Stefan ,   Technische Universität Dresden, Professur für Verkehrsökologie, von Harten Maike
Published: August 2023

The CITY CYCLING (STADTRADELN) campaign has been running since 2008 to motivate German citizens to use the bicycle for daily mobility routines. In the course of the MOVEBIS research project, nationwide GPS data of the CITY CYCLING participants were collected in the years 2018-2020 and were processed for planning purposes. This contribution addresses the question to which extent the participants in the CITY CYCLING campaign represent cyclists in the Federal Republic of Germany and whether the motivation during the campaign leads to a significant change in mobility behaviour. For this purpose, more than 73,000 complete questionnaires of campaign participants from a survey in the year 2020 were evaluated. The age and gender distribution of app users and non-users of the campaign are corresponding to those of cyclists from representative household surveys in Germany (MiD 2017). App users and non app users differ only insignificantly from each other and are, on average, rather older than in the cycling participants of nationwide MiD survey. The results reveal that the smartphone has no significant influence on the cycling behaviour of the users. The survey participants are regular cyclists. Around 88% of the respondents use the bicycle most frequently in everyday life, followed by the private car (national average) and public transport (in large cities). The influence of the campaign on the level of utilisation or the number of kilometres travelled by bike can be described as rather low, overall. Whereas 65% of the participants stated that they cycled to work just as often as outside the campaign period, 19% of the respondents used the bicycle less often for commuting and 16% more often. The results indicate that the CITY CYCLING campaign captures and represents the everyday transport behaviour of participants. During the COVID-19 pandemic, participants used their bicycles significantly more often (73%). The perception of safety is consistently high. The campaign was rated very positively and the majority of users (91%) would participate again or rather recommend the campaign to others (78%).
Clusters and anisotropic turbulence of gas-particle flow in fluidized risers studied using the four-way coupled second-order moment method
Authors: Sun Dan
Published: August 2023

The gas-particle flow in a fluidized bed is characterized as a “core-annulus” pattern with transient clusters moving along the riser. These clusters exist as regions with a higher concentration of particles and are surrounded by dispersed particles at lower concentrations. In this study, clusters and their fluid dynamics were investigated using the four-way coupled second-order moment method of the fluid–particle Eulerian–Eulerian two-fluid model. This model was evidenced in modeling the fluid-particle two phase flow in the previous research, especially when the particles were in medium concentration while the particle turbulence was far from equilibrium to satisfy the Boussinesq approximation. In the simulation, the gas-particle flow in the fluidized risers was predicted. The fluid dynamics of the Geldard B particle clusters in the risers were characterized. In addition, the anisotropic turbulence of either phase in the clusters was studied. According to the turbulence intensity of both the phases, the gas-particle flow in the fluidized riser was classified into six zones. As the volume fraction of the particles increased, the anisotropic ratios of the turbulence intensities in both phases increased in the dispersed zone and decreased in the cluster zone, respectively.
Engineering a molecular electrocatalytic system for energy-efficient ammonia production from wastewater nitrate
Authors: Miller Dean , Liu Matthew , Abels Kristen , Kogler Anna , Tarpeh William
Published: August 2023

Haber-Bosch ammonia production and utilization has sustained exponential population growth but exacerbated wastewater nitrate pollution. Abundant nitrate pollutants could be refined to purified nitrogenous chemicals with the electrochemical nitrate reduction reaction (NO3RR). However, the dilute and impure composition of nitrate-rich wastewaters presents barriers to realizing practical electrocatalytic systems that to date operate most efficiently in concentrated, pure electrolytes. These barriers inform our investigation of the ammonia-selective homogeneous molecular NO3RR catalyst Co(DIM). In this work, we elucidate interfacial mechanisms of catalysis inhibition that describe Co(DIM)-mediated NO3RR performance in complex electrolyte compositions. These mechanisms inform design principles for a novel reactive separations platform, electrocatalyst-in-a-box (ECaB), that exhibits the lowest reported energy consumption for purified ammonia production from a real wastewater (90.0 ± 2.7 kWh kg-N–1). This work demonstrates a use-informed design approach that iterates between mutually informative mechanistic insights and performance of electrochemical wastewater refining systems in complex aqueous streams.
Adsorption of Copper by Naturally and Artificially Aged Microplastics and Subsequent Release in Simulated Gastrointestinal Fluid
Authors: Zhou Lu , Masset Thibault , Breider Florian
Published: August 2023

Microplastics, especially aged microplastics can become vectors of heavy metals from environment to organisms with potential negative effects on food chain. However, a few studies focused on the bioavailability of adsorbed metals and most studies related to aged microplastics used artificial method that cannot entirely reflect actual aging processes. In this study, virgin polystyrene was aged by ozone (PS-O3), solar simulator (PS-SS) and lake (PS-Lake) to investigate adsorption of Cu by virgin, artificially and naturally aged microplastics and subsequent release in simulated gastrointestinal fluids (SGF). Characterization results show carbonyl was formed in PS-O3 and PS-SS, and the oxidation degree was PS-O3> PS-SS> PS-Lake. However, Cu adsorption capacity followed this order PS-Lake (158 μg/g)> PS-SS (117 μg/g)> PS-O3 (65 μg/g)> PS-Virgin (0). PS-O3 showed highest Cu adsorption capacity at 0.5 h (71 μg/g), but it dropped dramatically later (10 μg/g, 120 h), because PS-O3 could break up and the adsorbed Cu released in solutions subsequently. For PS-Lake, precipitation of metallic oxides contributes to the accumulation of Cu. The addition of dissolved organic matter (DOM) could occupy adsorption sites on PS and compete with Cu, but also can attach PS and adsorb Cu due to its rich functional groups. The simultaneous ingestion of microplastics with food suggested that adsorbed Cu is solubilized mostly from aged PS to SGF.
Breakdown of Langmuir Adsorption Isotherm: Adsorptions at Small Scales
Authors: Zangi Ronen
Published: August 2023

For more than a century, monolayer adsorptions in which adsorbate molecules and adsorbing sites behave ideally have been successfully described by Langmuir adsorption isotherm. For example, the amount of adsorbed material, as a function of concentration of the material which is not adsorbed, obeys Langmuir's equation. In this paper we argue this relation is valid only for macroscopic (large enough) systems. However, when particle numbers of adsorbate molecules and/or adsorbing sites are small, Langmuir's model fails to describe the chemical equilibrium of the system. This is because the kinetics of forming, or the probability of observing, occupied sites arises from two-body interactions, and as such, oughts to include cross-correlations between particle numbers of the adsorbate and adsorbing sites. The effect of these correlations, as reflected by deviations in predicting composition when correlations are ignored, increases with decreasing particle numbers and becomes substantial when only few adsorbate molecules, or adsorbing sites, are present in the system. In addition, any change that augments the fraction of occupied sites at equilibrium (e.g., smaller volume, lower temperature, or stronger adsorption energy) further increases the discrepancy between observed properties of small systems and those predicted by Langmuir's theory. In contrast, for large systems these cross-correlations become negligible, and as a result, allow the concentration of each component to be considered independently when expressing properties involving two-body processes. By applying statistical mechanics concepts, we derive a general expression of the equilibrium constant for adsorption. It is also demonstrated that in ensembles in which total numbers of particles are fixed, the magnitudes of fluctuations in particle numbers alone, can predict the average chemical composition of the system. Moreover an alternative adsorption equation, predicting the average fraction of occupied sites from the value of the equilibrium constant, is proposed. All derived relations and predictions were tested against results obtained by Monte Carlo simulations.
Facile Access to Well-Controlled Backbone-Degradable Multiblock and Statistical Copolymers from Living ROMP
Authors: Wang Xiaoyang , Wen Yixing , Wang Yu , Li Wei , Lu Xueguang , You Wei
Published: August 2023

Traditional ring-opening metathesis polymerization (ROMP) reactions exhibit wide functional group compatibility and precise con-trol over polymer architectures, albeit with nondegradable backbones. Recent progress has resulted in a series of degradable ROMP products with diverse cleavable functional groups that are derived from the corresponding monomers. However, the major-ity of the monomers display moderate to low ring strain, which restricts their living polymerization reactivity. In this study, a novel category of readily available 7-oxa-2,3-diazanorbornenes (ODAN) is presented, which exhibits the highest ring-strain (22.8 kcal/mol) compared to existing degradable ROMP monomers. This trait endows ODAN with the ability to perform living polymer-ization reactions, generating narrowly dispersed homopolymers, block copolymers, and statistical copolymers with various cyclic olefin comonomers, thereby enabling precise control over the distribution of degradable functional groups. Additionally, the re-sultant polymers comprise directly connected allyl hemiaminal ether and urethane units, which are hydrolyzed at controllable rates. Thus, these well-defined, structure-tunable, and backbone-degradable ROMP polymers are successfully applied as nano-etching materials and biodegradable drug delivery vehicles.
Modelling interactions between rubidium atom and magnetometer cell wall molecules
Authors: David Gregoire , Teale Andrew M. , Rogers David M.
Published: August 2023

Magnetometer cell wall coat molecules play an important role in preserving the life-time of pumped alkali metal atoms for use in magnetometers that are capable of measuring very small magnetic fields. The goal of this study is to help rationalise the design of the cell coat molecules. Rubidium-87 is studied in terms of its interaction with three template cell coat molecules; ethane, ethene and methyltrichlorosilane (MeTS). Ab initio electronic structure methods are applied to investigate the effect that the coat molecules have on the 2S ground state and 2P excited state of 87Rb. We find that, from the ab initio results, the three template molecules have differing effects with MeTS having the largest effect on the ground state and ethane or ethene having the largest effect on the non-degenerate excited states.
Simple local environment descriptors for accurate prediction of hydrogen absorption and migration in metal alloys
Authors: Korostelev Vladislav , Wagner James , Klyukin Konstantin
Published: August 2023

The control of hydrogen concentration and diffusion in metal alloys is critical for advancing clean energy technologies. A quantitative understanding of the composition-property relationship can accelerate the design of hydrogen storage materials, structural hydrogen-resistant alloys, and materials for energy-efficient nanoelectronics. In this work, we employed Density Functional Theory simulations to investigate the energy landscape of hydrogen absorption and mobility for a wide spectrum of high-entropy alloys and intermetallic compounds. Our study sheds light on the origin of hydrogen stability also providing quantitative guidance for compositional considerations and the design of technologically useful materials. The developed analytical model uses physically intuitive metrics characterizing the local environment, such as electronic structure features, volume of interstitial voids, and lattice vibrational modes, to predict the energy landscape of hydrogen in metal alloys based on simple calculations of bulk properties. The developed model exhibits remarkable accuracy in predicting hydrogen binding energy, achieving a low mean absolute error of less than 0.1 eV. Utilizing this model, we successfully predicted hydrogen absorption energies and migration barriers demonstrating that these quantities are linearly correlated, akin to the Brønsted−Evans−Polanyi principle. In addition, our study revealed that a similar list of material features can be employed to predict zero-point energy contribution associated with hydrogen vibrational motion.
Nanostructuring and stabilization of metastable rock-salt ZnO: Impact of high-pressure media and compression geometry
Authors: Sokolov Petr S. , Courac Alexandre , Solozhenko Vladimir L.
Published: August 2023

For complete and reproducible recovery of a high-pressure polymorph of zinc oxide, rock-salt ZnO (rs-ZnO), nanostructured wurtzite ZnO (w-ZnO) is typically used as a precursor for high-pressure synthesis. In the case of polycrystalline w-ZnO, only small amounts (less than 30 vol.%) of disordered/nanosized rs ZnO were occasionally observed in the recovered products. Here we report the conditions for the synthesis of single-phase rs ZnO from microcrystalline (40-50 µm) w ZnO powder at 7.7 GPa and 2000 K. The complete recovery of metastable rs-ZnO is possible only by using a multianvil apparatus for quasi-hydrostatic (triaxial) compression/decompression and pyrolytic boron nitride as a pressure medium. Single-phase rs ZnO was produced as colorless nanocrystalline well-sintered bulks with Vickers hardness up to 7 GPa - the record value for ZnO due to a fortunate combination of Hall-Petch nanostructuring effect and high intergranular purity. This unexpected phenomenon can be related to the mechanism of the direct and reverse phase transitions in ZnO, which requires "uniaxial" tensile deformation. Texture analysis of the recovered samples, as well as previous kinetic studies and ab initio simulation of strain-structure relationships, strongly support this model. Thus, 3-axial decompression is a more efficient tool – neglected until now – for reproducible recovery of high-pressure ZnO-based materials than the nature of the w-ZnO precursor and the presence of isostructural rock-salt phases.
Preparation of Layered Double Hydroxide-Polyoxometalate Based Composite
Authors: Hanifah Yulizah , Amri Amri
Published: August 2023

Material NiAl-K3[α-PW12O40], NiAl-K4[α-SiW12O40], ZnAl-K4[α-SiW12O40] and ZnAl-K3[α-PW12O40] were created. FTIR, XRD and SEM were used to characterize the substance. The findings of the successfully completed synthesis showed that peak diffraction angle for NiAl-LDH were at 11.58°, 23.18°, 35.01°, 39.41°, 46.70°, 60.94°, and 62.26° and diffraction at 10.29°, 20.07°, 34.02°, and 60.16° for ZnAl-LDH. The composite material LDH-polyoxometalate NiAl-PW12O40 that was at angles 10.76°, 26.59°, 30.8° and 63.1° and 8.61°, 25.27°, 33.8°, 66.34° for ZnAl-plyoxometalate. The typical polyoxometalate band on the composite material’s FTIR spectrum proved tha intecalation of the substance. SEM examination revealed the aggregat for nearly all intercalated and synthesized materials.
Ni-Cr Layered Double Hydroxide/Microcrystalline Cellulose Composite as Adsorbents for Malachite Green Dye
Authors: Manalu Rotua Natalia , Zahara Zaqiya Artha , Mohadi Risfidian
Published: August 2023

Malachite green dye in industrial wastewater can be removed by the adsorption method. The adsorbents used in the adsorption method were Ni-Cr LDH, microcrystalline cellulose, and Ni Cr LDH/microcrystalline cellulose composite. Regeneration process of malachite green dye with the Ni-Cr/microcrystalline cellulose adsorbent resulted in the adsorbent having the highest percent adsorbed when compared to Ni-Cr LDH and microcrystalline cellulose adsorbents. This is proof that Ni-Cr/microcrystalline cellulose LDH composite adsorbent can be used repeatedly as much as five cycles. Ni-Cr LDH material and Ni-Cr/microcrystalline cellulose LDH composite were synthesized by the coprecipitation method and were successfully carried out by XRD characterization to see the stability of the structure. The results of XRD characterization of Ni-Cr/microcrystalline cellulose composite showed peaks at diffraction angles of 11°(003), and 60°(110) which are typical regions of LDH and at diffraction angle of 22°(020) which is a typical area of microcrystalline cellulose material. Ni-Cr LDH, microcrystalline cellulose and Ni-Cr/microcrystalline cellulose get optimum pH at 7 with wavelength malachite green at 618.8 nm, kinetic equation following PSO and isotherm following Freundlich with capacity maximum until 129.870 mg.g−1. FT-IR spectra display groups found in LDH and composites including O-H, NO3−, M-O also microcrystalline cellulose have groups C-O and C-H. SEM characterization found out the biggest particle size is 1,954 µm as much as 72 and EDX composite material contains elements of O, C, Ni, Cr, Na, and N.
Futuros menores. Filosofias del tiempo y arquitecturas del mundo desde Brasil. De Luz Horne. Santiago, Chile: Ediciones Universidad Alberto Hurtado.  2021. 294 paginas.
Authors: Aguilar Gonzalo
Published: August 2023

Presentación de Futuros menores. Filosofías del tiempo y arquitecturas del mundo desde Brasil de Luz Horne
Variable selection in gender and age decision-making for traumatic spine and thoracic pathologies after various accidents with Multivariate Adaptive Regression Spline (MARS)
Authors: Gencer Gülcan , Gencer Kerem , Dumanlı Ahmet
Published: August 2023

Trauma is a condition that affects the body’s structure and results from outside factors. After heart disease and cancer, it is the most common cause of death across all age categories. For a variety of causes, people are routinely exposed to traumatic vertebral, thoracic pathologies and rib fractures. Ribs can be harmed by simple falls, impacts, and blunt injuries as well as broken due to car accidents and falling from a height. Magnetic resonance imaging or computed tomography are used to diagnose these fractures. In this study, non-linear complex methods were used to categorize gender and age by utilizing thoracic pathologies, fractures or cracks in the body as a result of traffic accidents or falling from a height, which have the feature of being a case in forensic issues. The most important data in the classification of gender and age were determined by Multivariate Adaptive Regression Spline (MARS) method. Although autopsy should be utilized in these situations, complex regression methods is intended to have an impact on quick and accurate decision-making about events in order to speed up or direct the process in the field of forensic medicine. As a result, the effectiveness of the experts subsequent predictions will be increased by the preliminary findings produced by real-world data and artificial intelligence algorithms or complex non-linear regression problems.
Synthesis, Crystal Structure, Hirshfeld Surface Analysis and Computational Study of Hydrazone Derivative of 5,5-dimethylcyclohexane-1,3-dione
Authors: Kurbanova M. , Ashfaq M. , Sadigova A. , Maharramov A. , Tahir M.N.
Published: August 2023

The diazotization reaction of p-fluoroaniline from aromatic amines with 5,5-dimethylcyclohexane-1,3-dione was studied, as a result 2-(2-(p-fluorophenyl)hydrazone)-5,5-dimethylcyclohexane-1,3-dione (FHDCD) was synthesized and its structure was confirmed by single crystal X-ray diffraction (XRD) technique. The crystal packing was governed by various intermolecular interactions which was inspected by Hirshfeld surface analysis. 2D fingerprint plots were formed to find the contact that has most significant contribution in crystal packing. Enrichment ratio was calculated in order to find the contact that has highest propensity to form crystal packing interaction. Void analysis was carried out to predict the mechanical response of the crystal. Moreover, interaction energy calculations were performed at HF/3-21G electron density model to further inspect the supramolecular assembly of the crystal.
Transfer pricing in taxation: problems and solutions
Authors:   Финансовый университет при Правительстве РФ, ВАСИЛЬЕВ Д.А.
Published: August 2023

Статья посвящена комплексному исследованию трансфертного ценообразования в налогообложении в Российской Федерации, причин появления трансфертных цен и основного международного документа, регулирующего трансфертные цены. В рамках исследования описаны риски от использования трансфертных цен и предложены способы минимизации этих рисков.
Ways to improve the economic and environmental efficiency of the process of utilization of associated methane in the extraction of energy resources .
Authors:   Российский университет дружбы народов, ЗАЙНУЛЛИН С.Б. , ЧЕРНЯЕВ М.В. ,   Российский университет дружбы народов
Published: August 2023

Экономика России в значительной степени зависит от добычи и реализации, (в том числе экспорта) энергоресурсов. Однако в настоящее время применяемые технологии добычи энергоресурсов, таких как нефть, газ и уголь, наносят существенный вред окружающей среде. Одним из ключевых факторов экологического вреда является выброс в атмосферу метана и других попутных газов. Цель данного исследования - поиск решения по снижению экологического ущерба и повышение экономической эффективности процесса утилизации попутного метана.Для достижения этой цели в статье проанализированы методы утилизации попутных газов, а также их преимущества и недостатки. При этом установлено, что успешное решение проблемы снижения экологического ущерба и повышения эффективности использования энергоресурсов, достигается при использовании перспективной технологии плазменно-импульсного воздействия на пласт. Данная технология применяется как на нефтегазовых месторождениях, так и на угольных шахтах, что существенно повышает рентабельность утилизации попутных газов и в первую очередь метана, уменьшая при этом неконтролируемые выбросы в окружающую среду. Все это приводит к более рациональному использованию добываемых ресурсов.
Economic and environmental efficiency of methane extraction from coal seams
Authors:   Российский университет дружбы народов, ПАЗЮЧЕНКО М.А.
Published: August 2023

Статья посвящена вопросам экономической и экологической эффективности добычи метана из угольных пластов. Рассмотрены технологии извлечения метана из угольных шахт и даны их основные характеристики. Раскрывается экономическая эффективность метана по сравнению с некоторыми другими видами топлива при производстве электроэнергии, а также при его применении в автомобильном транспорте.Особое внимание уделено обоснованию экологической эффективности добычи метана из угольных пластов, что проявляется в виде существенного загрязнения окружающей среды. Подчеркивается, что использование метана при заправке автомобилей вместо бензина или дизельного топлива в 10 раз уменьшает выбросы вредных веществ в атмосферу. Обращается внимание на повышение безопасности труда на угольных шахтах и снижение рисков несчастных случаев при своевременной дегазации подземных горных работ.
¿Cómo atender a la presencia del otro? un diálogo entre Husserl y Lévinas
Authors: Ortega-Bastidas Javiera
Published: August 2023

La presencia del otro ha cobrado sentido en las discusiones filosóficas y sientan un horizonte para los análisis en Ciencias Sociales. El presente artículo tiene como objetivo examinar los alcances de la teoría de la intersubjetividad propuesta por Edmund Husserl y la teoría de la alteridad propuesta por Emmanuel Lévinas. Ejemplarmente nos muestran dos modos de acceso a la relación con el otro. A partir de la V Meditación Cartesiana (2013) Husserl resitúa la presencia del otro desde su carácter fundante, que nace como empatía original. En Totalidad e Infinito (2016), Lévinas, nos muestra que existe una imposibilidad de reducir la experiencia humana a la pura interioridad, pues la presencia del otro acontece como expresión de sí. Es pura alteridad.
El pensamiento de Marx como filósofo político
Authors: Mendes Áquilas
Published: August 2023

Reseña del libro:

Ávalos, G. (2022). La filosofía Política de Marx. Barcelona: Herder.