bluuebunny/crossref_metadata_2025 huggingface dataset:
Increasing the content of coarse fractions in the mined coal mass by a combine using paired cuts
Authors: Gabov Viktor , Xuan Nguyen , Zadkov Denis , Tho Tran
Published: October 2022

The main volume of coal is mined underground using shearers. In modern shearers, auger actuators are mainly used, which are distinguished by the simplicity of design, manufacturability and reliability. However, in the process of separating coal from mass by cutting, the yield of fine grades is 40-50 % of the total production volume. Therefore, the search and development of technical solutions that provide an increase in the yield of large fractions in the process of coal mining with auger shearers is an urgent task. Traditionally, this problem is solved by increasing the thickness of the slices, which is achieved by installing cutters with a larger radial reach and increasing the shearer feed rate. An unconventional way to increase the cross section of slices by forming energy-efficient paired and group slices with mutual superposition of stress fields in the mass from the action of neighboring cutters is considered. The results of modeling the process of cutting coal confirm that an increase in the efficiency of destruction of the rock mass by the cutters of the auger executive bodies of the shearer can be achieved by a complex technical solution, including the formation of paired cuts and combined stress zones in the rock mass. As a result, the output of large fragments when cutting with paired cutters increases by 1.3-1.8 times compared with cutting with a single cutter.
SIR WYNDHAM HENRY DEEDES: A PORTRAIT OF THE TRANSLATOR AS A CULTURAL AMBASSADOR
Authors: Aktener Ilgın , Kansu-Yetkiner Neslihan
Published: October 2022

Sir Wyndham Henry Deedes (1883-1956) was an eminent British Army officer, civil administrator and a Turcophile, known for his literary translations from Turkish into English. This article examines his cross-cultural transfer practices, specifically his writings and interlingual literary translations by discussing his contributions to the promotion of Turkish culture in a British context. Furthermore, the study problematizes the notion of the cultural mediator and the contexts influencing and influenced by Deedes’ leading role, which caused him to act as a cultural communicative agent and an idea maker. The overall aim of this study is to contribute to the formulation of translation history through the microhistorical study of Deedes as a translation agent and the personal and social motives behind his translation decisions. It concludes that Deedes’ decisions were driven by not only his interest in Turkish culture and people, but also his position as an idea maker who found it vital to introduce the new Turkish Republic to the British audience and to promote Turco-British relations.
DIACHRONIC REPRESENTATION OF SELECTED ROMANCE LOANWORDS IN THE LOCAL SPEECH OF POMJAN
Authors: Todorović Suzana
Published: October 2022

This paper presents a diachronic account of the use of selected Romance loanwords (from A to K) in the Pomjan local speech of the Šavrini dialect. The Romance loanwords, which are an integral part of the Istrian dialects of Slavic origin, are the result of the centuries-long life of Istrians with Slavic and Romance roots. They are reflected as simple borrowings, hybrid borrowings, Romance phrases, calques, and so on. The loanwords collected by the Slovenian dialectologist Tine Logar in 1957 in Pomjan (Slovenian Istria) were compared with those we hear from today's dialect speakers. In 29 etymological articles we find out whether the Romance loanwords used by the villagers more than sixty years ago are still known and used by the locals today. At the same time, we show the spread of the lexemes in other parts of Slovenian Istria and connect them to their first origin, which is mainly Istrian-Venetian – the existence of the lexeme is also proved 1) in the Triestine dialect, 2) in Venetian and 3) in Standard Italian. The etymological articles conclude with a reference to the final source of the word.
TORTURED CITY TORTURED MIND: THE CONTINUOUS INTERPLAY OF INDIVIDUAL (SUB)CONSCIOUSNESS AND EXTERNAL EVENTS IN K. A. PORTER’S PALE HORSE, PALE RIDER
Authors: Kusovac Olivera , Mohar Tjaša
Published: October 2022

This article focuses on Katherine Anne Porter’s semiautobiographical modernist novella Pale Horse, Pale Rider, a rare example of literature with a direct reference to the Spanish flu pandemic during the World War I. The article first provides a brief overview of critical approaches to the novella, situating it in the literary plague canon, then focuses on the war and the pandemic as the external factors that are not shown only to change the face of the society, but also to deeply affect people’s minds. As the main protagonist Miranda falls ill with the influenza and enters a strenuous combat with the disease, the reader gains access to her subconscious through a series of dreams and deliriums that Miranda experiences during her illness. These will be analysed using Bion’s theory of dreams to show that they present Miranda’s affective response to the external reality as well as her capacity to digest the previously indigested emotions.
Investigation of the Effect of Yarn Waste Fibers and Cocamide Diethanolamide Chemical on the Strength of Hot Mix Asphalt
Authors: Saltan Mehmet , Kaçaroğlu Gizem , Karadağ Öznur
Published: October 2022

In this study, conventional bitumen test were performed on bituminous binder modified with Cocamide Diethanolamide chemical at different ratios. According to results of tests, the most suitable additive ratio has been determined as 5%. However, it was concluded that indirect tensile strength and resistance to moisture of samples prepared with bituminous binder modified with 5% Cocamide Diethanolamide has been adversely affected. It was desired to investigate that whether these properties could be strengthened by yarn waste fibers. Firstly, the effect of 0.1%, 0.2% and 0.3% yarn waste fibers on samples prepared with reference bituminous binder was investigated. Obtained results showed that both indirect tensile strength and resistance to moisture of samples containing 0.1% yarn waste fiber increased. Therefore, 0.1%, 0.2% and 0.3% yarn waste fibers were added to the aggregate mixture and mixing of them with bituminous binder modified with 5% Cocamide Diethanolamide were provided. According to obtained results, different ratios of yarn waste fibers added to aggregate mixture did not have a positive effect on moisture sensitivity. Tensile strength ratio values of samples containing bituminous binder modified with 5% Cocamide Diethanolamide and yarn waste fibers added to the aggregate mixture did not provide specification limit.
Damage assessment of different FDM-processed materials adopting Infrared Thermography
Authors: D'Andrea Danilo , Risitano Giacomo , Raffaele Marcello , Cucinotta Filippo , Santonocito Dario
Published: October 2022

The use of components obtained through the additive manufacturing (AM) technique has become increasingly widespread in recent years, playing a central role in industrial production, and in particular in some fields such as automotive, biomedical, aerospace and electronics. Among all AM techniques, FDM (Fused Deposition Modelling) represents the most used printing technique to produce polymeric and composite components, thanks to the flexible printing process, the low cost and the diversity of the materials adopted. The aim of the present work concerns the comparison between the mechanical properties of three plastic materials printed with the FDM technique (polylactic acid PLA, polyethylene terephthalate glycol-modified PETG and Acrylonitrile-butadiene-styrene ABS) using an Original Prusa i3 MK3S, by varying the raster angle between 0°, 45° and 90° degrees. Infrared Thermography has been adopted to monitor the temperature evolution during static tensile tests and to assess stress level that can initiate damage within the material. Failure analysis was performed to correlate the mechanical behaviour with the microstructural characteristics of the materials.
Numerical study of the plasticity effect on the behavior of short steel columns filled with concrete loaded axially
Authors: Boulmaali-Hacene Chaouche Yousria , Kouider Nadia , Djeghaba Kamel , Kebaili Bachir
Published: October 2022

For more than two decades, the construction technique using concrete filled steel tube (CFST) has been widespread throughout the world. Indeed, it has been demonstrated that the use of normal or high strength concrete, confined in a steel tube of circular shape can considerably improve its ductility as well as its load capacity, owing to the combination of the qualities of the two constituent materials; these tubes have an effortless execution, indeed, the concrete used in the CFST does not require formwork nor reinforcement, a durability of the two materials as well as a good behavior to fire, which was the effect desired at the origin of their elaboration. In this paper, we study the axial compression behavior of short circular steel tubes filled with concrete; their modelling will be performed using the ABAQUS/Standard calculation program. In order to accurately determine their behavior, we have created different models. Indeed, these tubes will be modeled in order to simulate different plastic state behaviours, namely a perfect elasto-plastic state, an elasto-plastic state with multilinear strain hardening and a third elasto-plastic behavior with strain hardening proposed by Tao et al. The tested columns consist of circular hollow sections which are designated in the literature as Concrete Filled Steel Tube (CFST), for which we vary the diameters, heights as well as the wall thicknesses, and which we fill with concrete of different qualities. The compressive behavior, including ultimate loads, confinement, load-deflection relationship and failure modes, was obtained from numerical models and compared with experimental and theoretical results based on Eurocode 4. All these results showed a good agreement and a satisfactory correlation, allowing us to assume that a correct modelling can be sufficient to simulate the behavior of CFST.
Experimental and numerical investigation of gap K-joints of rectangular hollow section trusses
Authors: Slimani Faycal , Benzerara Mohammed , Saidani Messaoud
Published: October 2022

This paper is concerned with investigating of the plastic behaviour on gap K-joints of truss girders, made from thin-walled rectangular hollow section members. An experimental study was carried out on a full-scale girder under a concentrated load on two central nodes. A numerical analysis was carried out using ABAQUS in order to clearly see the behaviour of this type of joint and to make a comparison with the experimentation. This study will make it possible to examine attentively and to define the analytical model for this type of joint. The results obtained in this paper have shown that the sections with very thin-walled present different behaviours compared to the thin or more or less thick sections. As a result, the tested truss made it possible to observe the failure mode of this type of section, follow-up of a comparative study on the determination of the joint capacity by Eurocode 3 and CIDECT.
On the use of the stepped isostress method in the prediction of creep behavior of polyamide 6
Authors: Sedira Lakhdar , Tedjini Mohsein , Guerira Belhi , Meftah Kamel
Published: October 2022

The stepped isostress method (SSM) is an advanced technique which allows the prediction of the long-term behavior and enables the construction of creep master curves of materials with short-term experimental tests. However, the performance of this method is highly dependent on the numerical model and the time spent in data processing. In this paper, the effect of the extrapolation techniques on the creep curves trend is investigated using the SSM data of Polyamide test. Three extrapolation functions are used to offset the delay of the stress history: polynomial, power and exponential functions. Furthermore, a numerical routine is developed during the last step of the SSM, where the shift factors are computed taking into account the rescaling and the dwell times of each level of stresses. The processing of the SSM raw data has revealed that the rescaling parameters are the most determining factors to reach an accurate long-term creep curves. The rescaling process has shown an appropriate time, whether achieved by the exponential or power functions. Larger shift factors for exponential functions are assessed and therefore a long period of creep master curve was obtained.
Beam-like damage detection methodology using wavelet damage ratio and additional roving mass
Authors: C. Santos Juliana , V. G. de Morais Marcus , R. Machado Marcela , Silva Ramon , U. L. Palechor Erwin , V. Silva Welington
Published: October 2022

Early damage detection plays an essential role in the safe and satisfactory maintenance of structures. This work investigates techniques use only damaged structure responses. A Timoshenko beam was modeled in finite element method, and an additional mass was applied along their length. Thus, a frequency-shift curve is observed, and different damage identification techniques were used, such as the discrete wavelet transform and the derivatives of the frequency-shift curve. A new index called wavelet damage ratio(WDR) is defined as a metric to measure the damage levels. Damages were simulated like a mass discontinuity and a rotational spring (stiffness damage). Both models were compared to experimental tests since the mass added to the structure is a non-destructive tool. It was evaluated different damage levels and positions. Numerical results showed that all proposed techniques are efficient techniques for damage identification in Timoshenko's beams concerning low computational cost and practical application.
Compressive behavior of Co-Cr-Mo radially graded porous structures under as-built and heat-treated conditions
Authors: Cantaboni Francesco , Ginestra Paola , Tocci Marialaura , Avanzini Andrea , Ceretti Elisabetta , Pola Annalisa
Published: October 2022

Additive manufacturing research is continuously growing, and this field requires a full improvement of the capability and reliability of the processes involved. Of particular interest is the study of complex geometries production, such as lattice structures, which may have a potentially huge field of application, especially for biomedical products. In this work, the powder bed fusion technique was utilized to manufacture lattice structures with defined building angles concerning the build platform. A biocompatible Co-Cr-Mo alloy was used. Three different types of elementary cell geometry were selected: Face Centered Cubic, Diagonal, and Diamond. These cells were applied to the radially oriented lattice structures to evaluate the influence of their orientation in relation to the sample and the build platform. Moreover, heat treatment was carried out to study its influence on microstructural properties and mechanical behavior. Microhardness was measured, and compressive tests were performed to detect load response and to analyse the fracture mechanisms of these structures. The results show that the mechanical properties are highly influenced by the cell orientation in relation to the building direction and that the properties can be further tuned via HT. The favorable combination of mechanical properties and biocompatibility suggests that Co-Cr-Mo lattices may represent an optimal solution to produce customized metal implants.
A simplified formula to estimate the load history due to ballistic impacts with bullet splash. Development and validation for finite element simulation of 9x21mm full metal jacket bullets
Authors: Andreotti Riccardo , Casaroli Andrea , Quercia Mauro , Boniardi Marco V.
Published: October 2022

An original simplified formula is proposed to estimate the load history caused by ballistic impacts characterized by the so-called bullet splash phenomenon, consisting in the complete bullet fragmentation with no penetration of the target. The formula is based on the progressive momentum variation of the mass of the bullet impacting on a planar plate normal to the impact direction. The method aims at creating a simplified approach to assess the response of structures by means of explicit finite element simulations without the need of modelling the interaction between impactor and target. The results demonstrate that the proposed method can be used to estimate the forces generated by bullet-splash phenomena of 9x21mm full metal jacket bullets and effectively applied to finite element simulations allowing significant reductions in computational cost.
Action Research conceptualised in seven cornerstones as conditions for transforming education
Authors: Edwards-Groves Christine , Rönnerman Karin
Published: October 2022

This article traces the philosophical and theoretical roots of Action Research to rescript its promise for site-based educational formation, reformation and transformation. The process of historicising Action Research through an extensive review of the extant literature, enabled us to establish seven cornerstones that captured the essence of the critical conditions: the practices and practice architectures, that give coherence and comprehensibility to Action Research as necessary for sustained and sustainable change in education. Framing these practices and practice architectures as cornerstones sets down important benefits for contemporary education requiring critical inquiry, rethought purposeful action and systematic responsive development. The cornerstones: contextuality, commitment, communication, collaboration, criticality, collegiality and community, were derived from viewing Action Research from its historical principle committed to democratic way of working. It is our position that the cornerstones account for, acknowledge and extend traditional perspectives and descriptions; and assist practitioners deepen understandings about the conditions necessary for opening up generative possibilities of Action Research in ways that do not neglect or lose sight of its core historical connections and democratic virtues.
Evitable iterates of the consistency operator
Authors: Walsh James
Published: October 2022

Why are natural theories pre-well-ordered by consistency strength? In previous work, an approach to this question was proposed. This approach was inspired by Martin’s Conjecture, one of the most prominent conjectures in recursion theory. Fixing a reasonable subsystem T of arithmetic, the goal was to classify the recursive functions that are monotone with respect to the Lindenbaum algebra of T. According to an optimistic conjecture, roughly, every such function must be equivalent to an iterate [Formula: see text] of the consistency operator “in the limit” within the ultrafilter of sentences that are true in the standard model.

In previous work the author established the first case of this optimistic conjecture; roughly, every recursive monotone function is either as weak as the identity operator in the limit or as strong as [Formula: see text] in the limit. Yet in this note we prove that this optimistic conjecture fails already at the next step; there are recursive monotone functions that are neither as weak as [Formula: see text] in the limit nor as strong as [Formula: see text] in the limit. In fact, for every α, we produce a function that is cofinally equivalent to [Formula: see text] yet cofinally equivalent to [Formula: see text].
An hybrid cluster-based data centric routing protocol assisted by mobile sink for IoT system
Authors: Mezghani Omnia , Mezghani Mahmoud
Published: October 2022

Nowadays, using mobile computing devices and the Internet of Things (IoT) in networks have posed several challenges to match up the forthcoming technological requirements. Wireless Sensors Network (WSN) is considered as an important component of the IoT which produces a massive amount of data (big data). However, dealing with limited capacities of the elementary components of a network in an IoT enabled WSN, is a key challenge. The existing approaches in the literature are inadequate for large networks and cannot be applied to IoT platform without adaptation. Data Centric Network (DCN) is an important notion for the future Internet architecture to resolve the problems related to big data manipulation. In fact, using a DCN strategy for the resource limited capacities WSN enabled IoT networks is beneficial to manage densely deployed and mobile components to enhance the data gathering mechanism. In this context, this paper proposes an IoT cluster based routing protocol for data centric mobile wireless sensors networks named ICMWSN. The proposed algorithm fits with a WSN belonging a large number of mobile sensors as well as a mobile sink. It is based on a clustering technique to form multi-hops clusters around fixed pre-elected CHs. Besides, an effective tour construction method is involved for the mobile sink to collect data from the eventual cluster heads. The extensive simulation results proved that ICMWSN outperformed the compared methods in terms of energy consumption, network lifetime and data delivery rate.
Whose open data is it anyway? An exploratory study of open government data relevance and implications for democratic inclusion
Authors: Schwoerer Kayla
Published: October 2022

Open government data (OGD) is believed to enhance democratic outcomes by empowering citizens with the information necessary to participate in meaningful ways. Nonetheless, questions remain about whether OGD is indeed empowering citizens to participate or if the data that governments publish is more reflective of the interests of non-citizen stakeholders. Using the metadata of 2607 publicly available datasets scraped from New York City’s open data portal, this exploratory study employs qualitative content analysis to identify what types of data are published and what the data say about OGD’s potential as a tool for advancing inclusion in democratic processes. The analysis focused particularly on the datasets’ relevance to five particular stakeholder groups: citizens, private sector firms, nonprofits, researchers, and the city’s internal agencies. Findings showed that non-citizen-relevant datasets not only outnumbered citizen-relevant datasets by a large margin but they were also viewed and downloaded at higher rates too. I discuss the implications for inclusion in democratic processes, including power imbalances among OGD user groups, the discretionary power data publishers possess, and, ultimately, whether the types of data cities publish is sufficient for empowering an informed citizenry, as an effective democracy demands.
Exploring the Connection Between the Gut Microbiome and Parkinson’s Disease Symptom Progression and Pathology: Implications for Supplementary Treatment Options
Authors: Chan Dennis G. , Ventura Katelyn , Villeneuve Ally , Du Bois Paul , Holahan Matthew R.
Published: October 2022

The contribution of the microbiota to induce gastrointestinal inflammation is hypothesized to be a key component of alpha-synuclein (aSyn) aggregation within the gastrointestinal (GI) tract in the pathological progression of Parkinson’s disease (PD). The function of the GI tract is governed by a system of neurons that form part of the enteric nervous system (ENS). The ENS hosts  100–500 million nerve cells within two thin layers lining the GI tract. The gut-brain axis (GBA) is the major communication pathway between the ENS and the central nervous system. It has become increasingly clear that the microbiota in the gut are key regulators of GBA function and help to maintain homeostasis in the immune and endocrine systems. The GBA may act as a possible etiological launching pad for the pathogenesis of age-related neurodegenerative diseases, such as PD, because of an imbalance in the gut microbiota. PD is a multi-faceted illness with multiple biological, immunological, and environmental factors contributing to its pathological progression. Interestingly, individuals with PD have an altered gut microbiota compared to healthy individuals. However, there is a lack of literature describing the relationship between microbiota composition in the gut and symptom progression in PD patients. This review article examines how the pathology and symptomology of PD may originate from dysregulated signaling in the ENS. We then discuss by targeting the imbalance within the gut microbiota such as prebiotics and probiotics, some of the prodromal symptoms might be alleviated, possibly curtailing the pathological spread of aSyn and ensuing debilitating motor symptoms.
Molecular Mechanisms Mediating the Transfer of Disease-Associated Proteins and Effects on Neuronal Activity
Authors: Brás Inês C. , Khani Mohammad H. , Vasili Eftychia , Möbius Wiebke , Riedel Dietmar , Parfentev Iwan , Gerhardt Ellen , Fahlbusch Christiane , Urlaub Henning , Zweckstetter Markus , Gollisch Tim , Outeiro Tiago F.
Published: October 2022

Background: Various cellular pathways have been implicated in the transfer of disease-related proteins between cells, contributing to disease progression and neurodegeneration. However, the overall effects of protein transfer are still unclear. Objective: Here, we performed a systematic comparison of basic molecular mechanisms involved in the release of alpha-synuclein, Tau, and huntingtin, and evaluated functional effects upon internalization by receiving cells. Methods: Evaluation of protein release to the extracellular space in a free form and in extracellular vesicles using an optimized ultracentrifugation protocol. The extracellular effects of the proteins and extracellular vesicles in primary neuronal cultures were assessed using multi-channel electrophysiological recordings combined with a customized spike sorting framework. Results: We demonstrate cells differentially release free-forms of each protein to the extracellular space. Importantly, neuronal activity is distinctly modulated upon protein internalization in primary cortical cultures. In addition, these disease-related proteins also occur in extracellular vesicles, and are enriched in ectosomes. Internalization of ectosomes and exosomes by primary microglial or astrocytic cells elicits the production of pro-inflammatory cytokines, and modifies spontaneous electrical activity in neurons. Objective: Overall, our study demonstrates that released proteins can have detrimental effects for surrounding cells, and suggests protein release pathways may be exploited as therapeutic targets in different neurodegenerative diseases.
Plasma phospholipid fatty acid profile, estimated desaturase activities and prevalence of the metabolic syndrome in a general population cohort: A cross-sectional study
Authors: Zhu Yinjie , Vogelpohl Fabian A. , Heiner-Fokkema M. Rebecca , Pranger Ilse G. , Minović Isidor , Navis Gerjan J. , Bakker Stephan J.L. , Riphagen Ineke J.
Published: October 2022

BACKGROUND:

An altered plasma fatty acid (FA) profile and desaturase activities have been associated with several metabolic diseases, including the MetS, but studies in the general populations are lacking, and only few studies have investigated a broad spectrum of FA in plasma phospholipids (PL).

OBJECTIVE:

We investigated, cross-sectionally, the relationship of the FA profile and desaturase activities in plasma PL with the prevalence of MetS in a general population in The Netherlands.

METHODS:

Baseline characteristic data from 850 participants (male: 50.2%) aged 38-68 years recruited in the Lifelines cohort study were obtained. The FA profile was determined in fasting plasma PL, and desaturase activities were estimated from product/precursor ratios. The MetS was defined according to International Diabetes Federation. Logistic regressions were used to examine the relation of the FA profile with the prevalence of MetS, and Bonferroni correction was applied to account for multiple testing.

RESULTS:

151 participants (17.7%) had the MetS. After adjustment for several confounders and Bonferroni correction, higher tertiles of C18 : 0 (the early precursor of de novo lipogenesis pathway), C18 : 3n6 and C20 : 3n6 (both consistent with a high Δ6 desaturase (D6D) activity), and D6D activity itself were associated with a higher prevalence of MetS, while higher tertiles of C18 : 1n7, C24 : 0, and C24 : 1n9 (very long chain FA) as well as stearoyl-CoA desaturase (SCD)-18 were inversely associated with the MetS.

CONCLUSIONS:

This study shows that a wide-ranging plasma PL FA profile and estimated desaturase activities were different between adults with and without the MetS in a general representative population and implicates the importance of monitoring individual FAs and desaturase activities as novel modifiable biomarkers for the MetS.
Occupational ergonomics and related musculoskeletal disorders among dentists: A systematic review
Authors: Soo Suet Yeo , Ang Wei Sze , Chong Chen Hooi , Tew In Meei , Yahya Nurul Asyikin
Published: October 2022

BACKGROUND: There is an increasing concern about musculoskeletal disorders (MSD), resulting from occupational health hazards among dentists. Dentists who are susceptible to occupational health hazards could develop cumulative trauma disorders, lead to absenteeism from work, loss of productivity and performance or even long-term disability. OBJECTIVE: This study aims to determine the prevalence of musculoskeletal disorders among dentists, explore the risk factors and identify the ergonomic preventive measures for dental professionals. METHODS: Articles published between 2008–2020 were searched in scientific databases (MEDLINE, PubMed, Scopus and Cochrane Library). The Critical Appraisal Skills Programme Systematic Review Checklist was used to assess the quality of the studies. RESULTS: Eighteen studies were found to be suitable in the final review. Relevant data was extracted and summarized from the included studies. The annual prevalence of musculoskeletal disorders in any body site ranged between 68% and 100%. The most predominant regions for musculoskeletal disorders among dental professionals were identified to be the lower back (29% to 94.6%), shoulder (25% to 92.7%), and neck (26% to 92%). The most frequently reported risk factors of MSDs were the individual characteristic female gender (57.1%), followed by awkward working postures (50%), long working experience (50%) and being dental specialists (42.9%). Several preventive measures were identified as the most effective ways in preventing MSDs, the use of magnification (40%) and regular physical activity (40%). CONCLUSIONS: This review reported a high prevalence of musculoskeletal disorders (MSD) among dentists. It critically updates and adds the latest evidence on occupational ergonomics among dentists.
Petroelastic simulation as a method for analysing the anisotropy of elastic properties on the scale of seismic surveys
Authors: Savoyskaya M. K. , Bayuk I. O.
Published: October 2022

Introduction. Reservoirs composed of thin layers with different elastic properties exhibit the anisotropy of elastic properties. Anisotropic environments are studied using special seismic positioning systems that require large financial and time resources. However, neglecting pronounced anisotropy leads to misinterpretation of the data. Evaluation of the degree of anisotropy of a thin-layer stratum allows researchers to determine whether anisotropy could be neglected by conditionally considering the stratum to be isotropic.

Aim. To estimate the anisotropy of carbonate rocks on the scale of seismic surveys based on the data of geophysical well logging and petroelastic simulation.

Materials and methods. Models of carbonate rocks with different characteristics of pore space were created based on the Berryman and Backus methods. For these models, an analysis of the degree of anisotropy by Thomsen parameters was carried out. Acoustic and density logging data of a well located in Western Siberia were used for comparison with actual data.

Results. A numerical characteristic was found, the analysis of which helped to determine the significance of anisotropy before the application of the Backus method thus significantly reducing the number of necessary computational processes.

Conclusion. The obtained parameter of the degree of rock heterogeneity correlates well with Thomsen parameters responsible for anisotropy, which indicates the possibility of its use for assessing the anisotropy of strata.
Review of rationales for the introduction of the “Geophysical electrodynamics” term
Authors: Aksenov V. V.
Published: October 2022

Background. The article provides arguments for the introduction of the “geophysical electrodynamics” term.

Aim. To justify the introduction of a new term “geophysical electrodynamics”.

Methods of substantiation. The limits of the applicability of Maxwell’s equations are studied. Additionally, some concepts are introduced, in particular, about a new paradigm in electrodynamics, about new equations in geophysical electrodynamics, about the differences between new electrodynamics and Maxwell’s electrodynamics, about the sources of toroidal and poloidal electromagnetic fields, about toroidal currents in Maxwell’s equations, about non-power electromagnetic fields, about the quantum effect in non-power electromagnetic fields, toroidal fields in the core of the Earth, mathematical achievements in the new paradigm, about the reproduction of sources of the electromagnetic field of the Earth, and effects in classical electrodynamics explained by geophysical electrodynamics.

Results. Responses to the above justifications were received.

Conclusion. Physical and mathematical justifications for the introduction of the term “geophysical electrodynamics” find confirmation both in the natural electromagnetic field of the Earth, and in a number of long-known classical effects in the standard Maxwell’s electrodynamics. Small but fundamental differences of one electrodynamics from another will reduce the number of effects unexplained from the standpoint of Maxwell’s equations, encountered in both theory and experiments on Earth.
Forecast of the morphology and occurrence conditions of complex chromite ore bodies (on example of Labogeyskoe-2 site, Polar Urals)
Authors: Morozova  T. P. , Karelina E. V. , Markov V. E.
Published: October 2022

Background. Chromium ores are confined to stratified massifs of basic and ultra-basic composition. The Voikaro-Sinyinsky massif is part of the main hyperbasite belt of the Urals. Inside the hyperbasites of this massif, at the boundaries of tectonic flakes in particular, ultra-basic metamorphites are developed, constituting the zones of sharply variable thickness. During survey routes, a mechanical halo of scattering of ore fragments was found. When studying the ore stockpile, ditches opened the Labogeyskoe-2 chromite ore body, which belongs to the Pogureysky block of the Voikaro-Sinyinsky massif. In the ore occurrence area, harzburgites are predominantly developed with thin striped dunite aggregates in a small volume and individual dunite bodies of low thickness. Chromium ores are densely impregnated, medium- to coarse-grained. The amount of chromospinelides in the composition of ores сonstitutes 90—95%, the serpentine of irregular shape as well as the relics of olivine and emerald-green uvorovite grains, along with the single grains of pyrrhotite and magnetite are found in the interstitia (2—5%). Ores are massive, often cataclazed. The experience of studying this ore occurrence can serve as an analogue for a more effective study of similar ore occurrences. Aim. Evaluation of the Labogeyskoye-2 ore occurrence for the application of the information obtained and methods of its study in the study of a similar Levopayersk ore body, which will help save time and finances in the design and more efficient exploration.

Materials and methods. During the filming routes, a mechanical halo of scattering of ore fragments was detected. During the study of the ore collapse in 1966, the KM22—KM25 ditches were passed and the Labogeyskoye-2 chromite ore body was uncovered by the KM24 ditch. In 2013, during geological exploration at Labogeyskoye-2, 3 ditches (K50—K52) were passed and detailed gravimagnetic studies of Institute of Mineralogy, Geochemistry and Crystal Chemistry of Rare Elements in 2011—2012 were performed.

Results. The Levopayerskoe ore body is probably the closest analogue of the Labogeyskoye-2 ore occurrence among the 24 ore occurrences, for which geological plans and calculation sections were compiled based on the results of mining and drilling operations.

Conclusions. The closest analogue of the Labogeyskoye-2 ore occurrence is probably the Levopayerskoye ore body. Therefore, further geological and exploration work at the Labogeyskoe-2 site should be carried out taking into account the conditions of occurrence of the similar Levopayerskoe ore body.
An engineering-geological study of rock soils and the products of their fracture zones (Albazinskoe deposit, north Khabarovsk Krai)
Authors: Ryashchenko T. G. , Maslov E. A. , Bryzhak E. V. , Shtel’makh S. I.
Published: October 2022

Background. The results of an engineering-geological study of rock soils and the products of their fault zones are considered on the example of samples selected in the sides of the Albazinskoe gold-bearing deposit located in the north of the Khabarovsk Krai.

Aim. To develop and implement a methodological approach, which includes laboratory determinations of the velocity of propagation of longitudinal seismic waves (“seismic speed”) using a “Pulsar-2.2” unit (methods of continuous and through sounding), as well as density, porosity and water absorption determinations along with obtaining information about the types of microstructure and microtexture, the mineral composition and mineral alteration features under the influence of metamorphism (using petrographical thin sections).

Materials and methods. For the collected rock soil samples the relationship between seismic velocity and physical properties indicators was evaluated (R-type cluster analysis programme). The products of fractural zones were studied in a laboratory according to a specially-developed methodological approach: extended (black clay) and reduced (crushed stone formations with debris). The microelement composition of the clay and gravel of argillites was determined for the first time, and the level of their pollution by toxic microelements (Zc index) was evaluated.

Results. On the basis of quantitative assessment of the relationship between indicators of rocky soils various properties identified using the cluster analysis program, an “anomalous” conclusion is obtained about the absence of the rock soil density effect on seismic properties, which can be explained by the textural and structural features, as well as by mineral composition and the consequences of metamorphism (cataclastic and blastogenetic features recorded on the microscale in thin sections).

Conclusion. The proposed methodological approach can be recommended for further studies of seismic, strength and physical properties of rocky soils during seismological and engineering-seismological studies of various territories.
Development Programme of Sergo Ordzhonikidze Russian State University for Geological Prospecting (MRGI) for 2023—2027
Authors: Panov Yu. P.
Published: October 2022

Russia’ national Programme for the Reproduction of the Mineral Resource Base cannot be implemented successfully without coordination between the quality of mining specialist training and the pace of developing mineral resources both in terms of solving methodological issues and providing stable funding.

The Sergo Ordzhonikidze Russian State Geological Exploration University carries out its activities aimed at training specialists for organizations of the Federal Agency for Subsoil Use. This direction is elucidated in the Programme and Development Strategy of the University for 2023–2027.
Closest fit Approach for Atypical Value Revealing and Deciles Range Anomaly Detection Method for Recovering Misplaced value in Data Mining
Authors: Dipakkumar Pandya Darshanaben , Modi Bhumika Kumarbhai , Bhavsar Nidhi S.
Published: October 2022

In identifying anomalous database values, it is currently a very active research area in the mining community. The task of identifying anomalous values is to find a small group of exceptional data objects compared to the rest of the large amount of data. The discovery of anomalous values in a group of models is an extremely recognized difficulty in the field of data mining. An outlier is a prototype that is not related to the rest of the patterns in the data set. The proposed method for searching for outliers uses an anomalous detection approach. The purpose of the approach is to find anomalous values first based on the criteria of the condition.We use the information criterion and approach named Outlier Detection to remove the outliers from the dataset and apply deciles range anomaly detection algorithm for Recovery algorithm to recover missing data from the database.
Escolas Fitoparceiras: Saúde, Ambiente e Educação através das Plantas Medicinais
Authors: Magalhães-Fraga S. A. P. , Oliveira M. F. S.
Published: October 2022

Este artigo é parte do estudo apresentado pela autora Maria de Fátima Silva de Oliveira como monografia de conclusão do Curso de Especialização em Gestão da Inovação em Fitomedicamentos do NGBS/Coordenação de Estudos de Far-Manguinhos.Em 22 de junho de 2006, o governo federal aprovou a Política Nacional de Plantas Medicinais e Fitoterápicos. Essa política possui diretrizes imprescindíveis para a melhoria do acesso da população às plantas medicinais de forma segura, à inclusão social e regional, além do uso sustentável da biodiversidade brasileira. Como a escola é um espaço de formação de futuros cidadãos e a educação é um elemento indispensável de transformação, o presente trabalho através da gestão participativa visa levar à unidade escolar e ao seu entorno ações educativas que promovam a saúde e o desenvolvimento sustentável utilizando plantas medicinais como tema gerador. Os alunos realizarão um levantamento das plantas medicinais utilizadas pelos seus pais e responsáveis e a partir dos dados obtidos construirão uma horta medicinal, um herbário e aprenderão práticas de compostagem. Também visitarão outras instituições com projetos relacionados com plantas medicinais. Além disso, pais e responsáveis com conhecimentos de plantas medicinais terão a oportunidade de organizar e realizar eventos. Todas as atividades servirão de ferramenta para os educadores abordarem temas de acordo com os conteúdos apresentados em sala de aula. Assim, acreditamos estar contribuindo para a formação de cidadãos conscientes, responsáveis e participantes, aumentando a autoestima a partir do momento que se sentirem parte integrante do projeto, bem como contribuir com a implantação das diretrizes do Programa Nacional de Plantas Medicinais e Fitoterápicos atendendo às demandas das comunidades locais com o resgate do saberes relativos às plantas medicinais já utilizadas pela comunidade local e o esclarecimento sobre a sua correta utilização.
Phyllanthus niruri (Quebra-Pedra) no Tratamento de Urolitíase: Proposta de Documentação para Registro Simplificado como Fitoterápico
Authors: Marques L. C.
Published: October 2022

Este estudo realiza uma compilação na literatura disponível de informações científicas úteis, referentes às espécies de ‘quebra-pedra’, em especial a espécie Phyllanthus niruri L. e sua atividade comprovada no tratamento da urolitíase, com o propósito de estimular empresas farmacêuticas a produzir medicamentos com esta matéria prima, utilizando a alternativa do registro simplificado previsto na legislação sanitária em vigor.
USE OF VIRTUAL AND AUGMENTED REALITY TECHNOLOGIES TO ENSURE LABOR SAFETY
Authors: Krainiuk O. , Buts Yu. , Barbachyn V. , Severinov O.
Published: October 2022

Recently, new learning technologies with elements of virtual and augmented reality have been created to eliminate the discrepancy between the necessary and existing competencies of employees. They can be used in the field of occupational safety or training young professionals in safe work practices.
VR/AR technologies should be aimed at improving safety at work through the introduction of digital instructions and training in virtual reality, simulating both regular and extreme situations. VR/AR technologies help to reduce time costs and possible errors, increase productivity and efficiency, and also reduce the risk of industrial injuries.
The importance and prospects of modern AR/VR technologies for ensuring labor safety are shown.
The analysis of modern foreign and domestic research and development of the VR/AR interface in the field of building a labor protection management system has been carried out. Emphasis is placed on the formalization of the concept of using AR tools to ensure production safety. A SWOT analysis was carried out to assess the main problems and risks of introducing VR / AR technologies to ensure labor safety.
During the analysis of technology application cases, data was obtained that allowed to identify the weak and strong sides of the technologies, the possibilities of their application and the threats faced by the companies. To systematize information from sources, a SWOT matrix was constructed. We will present a SWOT analysis of AR/VR technologies to ensure labor safety.
One of the strengths can be considered "a variety of applications", which confirms the promise of using AR / VR tools.
With proper use of the potential of technology, companies will be able to achieve the desired benefits by increasing employee productivity, improving work processes, effectively building a labor management system, deepening the professional competencies of their employees, and reducing the likelihood of accidents or accidents at the enterprise.
Keywords: VR/AR technologies, industrial safety, labor protection.