bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of a pre-treatment with hydrochloric acid on the copper solubilization of a bornite concentrate with posterior leaching in chloride medium
Authors: Avila Mario , Navarro Patricio , Vargas Cristian , Varava Paul , Castillo Jonathan , Durán Carlos
Published: November 2022

The formation of soluble species from a bornite flotation concentrate pre-treated with hydrochloric acid was studied. Copper recovery after a leaching in a H2SO4-NaCl solution was determined. The influence of acid concentration and ore particle size were evaluated. Chemical and morphological characterization of the samples before and after the leaching were carried out by XRD and SEM to evaluate changes in the bornite. It was revealed that increasing acid concentration during the pre-treatment dramatically enhances the formation of soluble species, reaching in one case 49.0% of copper dissolution after 15 d of pretreatment and 24 h of leaching, both at 25 °C, without reducing the particle size of the concentrate. It was also revealed that the ore particle size did not affect the transformation rate into soluble species, due to the corrosive effect of HCl, which fractured and generated micro-pores on the surface of the particles studied.
Extraction yield of humic substances from organic materials
Authors: Pedroso-Rodriguez Irina , González-Sáez Lourdes Yamén , Luis-Orozco Jesús , Pérez-Martínez Liz , Vandecasteele Carlo , Caneghem Jo Van
Published: November 2022

At present there is a great advance in the use of organic substances as fertilizers; humic substances are one of them with various forms of extraction. This article evaluates the extraction yield of humic substances (humic acid and fulvic acid) from three raw materials and different basic extractants and acids. In the basic extraction of humic substances, the type of raw material significantly influences, to a p value equal to 5 %. The maximum extraction volumes of humic substances are with garden waste. The fractionation stage of the humic and fulvic acids (acid extraction) depends on the type of basic extractant. The alternative Vermicompost - NaOH - HCl is the most economic and technically feasible, with 38.53 % of extraction yield value of humic acid and 64.90 $/h of gross profit.
Vegetation indices for Pontederia crassipes Pellegrini & Horn and multitemporal distribution in the Hydroituango reservoir•
Authors: Allín-Cañas Mayra Alejandra , Suárez-Gómez July Andrea , Toro-Restrepo Luis Jairo , Rueda-Trujillo Manuela Andrea
Published: November 2022

Pontederia crassipes Pellegrini & Horn (water hyacinth) is an invasive, world-wide distributed aquatic plant, which has been evinced in the reservoir of the Ituango Hydroelectric Project - IHP (Colombia) since 2018. In this study, the ability of several Vegetation Indices (VIs) to detect P. crassipes was evaluated based on monthly Sentinel-2 images, between September 2018 and March 2020. The invasive capacity of P. crassipes was demonstrated with covered area doubling each month in the IHP reservoir. A maximum 32-fold increase of P. crassipes in just one month was registered during the rainy season and resulted in a 104-ha expansion. Results based on Cl red edge, MSR, and DVI were consistent and had less deviations from normality. Our results highlight the importance of new-generation sensors to discriminate and map the spatial distribution of P. crassipes for the development of efficient monitoring and management strategies at the reservoir scale.
Crude oils mixtures: compatibility and kinetics of water-in-oil emulsions separation
Authors: Gentili Nunes Denise , Da Conceição Silva Jarlene , Cavalcanti Nunes Giovani , Delduque Lopes da Silva Matheus , Fernandes Lucas Elizabete
Published: November 2022

Some oil fields produce from different reservoirs, which may be incompatible generating precipitates. These precipitates are often asphaltenes, which can be an emulsion stabilizing agent negatively affecting the oil treatment processes. In this work, the influence of oil incompatibility on the stabilization of water-in-oil emulsions was studied. Emulsions were evaluated from three different oils (A, B and C) and their mixtures (AB, AC, BC and ABC). The results showed that there is a relationship between separation kinetics of emulsions and asphaltene precipitation. The separation kinetics of the emulsions was faster for more compatible oils. We observed that oil A, which was the less stable regarding asphaltenes, and the ABC mixture, which was the most incompatible mixture, both presented the slowest kinetics of emulsion separation. On the other hand, mixture BC which had the highest compatibility among the other mixtures presented a faster kinetic of emulsion separation.
La escritura de las prácticas administrativas como fundamento del corpus teórico de la disciplina: Reseña de “Historia de la Administración. Escribir las prácticas”
Authors: Gonzales-Miranda Diego René
Published: November 2022

Adentrarse en el ámbito administrativo implica, necesariamente, contextualizar la administración como una actividad profesional y, por lo mismo, como una disciplina que puede enseñarse, aprenderse y ejercerse en la sociedad. En este contexto, es común, dentro de los planes curriculares de formación de los programas de administración, considerar que la acción de administrar es una práctica social basada, sobre todo, en un sentido común que lleva al individuo a intervenir la realidad que lo circunda, distribuyendo y priorizando los recursos con que cuenta en su deseo y necesidad por adaptarse al entorno. Así, se puede administrar el tiempo, los activos o bienes personales, la relación marital o familiar o, incluso, la vida afectiva e íntima del individuo. Se agrega, además, la innecesaria obligación de estudiar formalmente la administración para poder administrar. Sea por su carácter netamente práctico, por no contar con bases teóricas sólidas (Muñoz, 2011) o porque la experiencia en el hacer termina por subsanar la ausencia de conocimiento teórico, la administración ha sido catalogada como una profesión inmersa dentro de la ciencias sociales, carente de cuerpo epistemológico y metodológico riguroso, reduciendo así sus contribuciones a un conjunto de recetas, fórmulas de éxito, modelos de gestión importados y no apropiados a nuestra realidad local y, asimismo, a un reconocimiento pobre y limitado dentro de las ciencias sociales y humanas.
Rito Escocés Antiguo y Aceptado
Authors: Del Solar Felipe Santiago
Published: November 2022

El artículo presenta un balance general de las investigaciones relativas al Rito Escocés Antiguo y Aceptado. Para ello, se analizan e identifican las temáticas desde donde se ha investigado; los problemas relacionados con el acceso a fuentes primarias; las estructuras institucionales de investigación que se han creado y la producción historiográfica relativa al tema. Al respecto, se infiere que una parte importante de la investigación se ha realizado al margen de la disciplina histórica y esta ha respondido a motivaciones vinculadas a los cismas y conflictos entre obediencias rivales.
Comparative analyses of the educational methods in the leading business development masters programmes in Hungary
Authors: Jáki Erika , Aranyossy Marta , Halmosi Péter , Becsky-Nagy Patrícia
Published: November 2022

Entrepreneurship education is a rapidly growing research field, emphasizing the role of education institutions in developing entrepreneurial skills and attitudes. We examined the leading Hungarian business development programmes to explore the prominent educational and technological trends of the programmes from four perspectives: (1) usage of practice-oriented and experimental teaching methods, (2) how the COVID-19 pandemic accelerated the digitalization of education, (3) preparation of future entrepreneurs for the digital economy and (4) fostering entrepreneurship through extracurricular offers. We carried out 36 questionnaire-based interviews with professors of the investigated universities, comparing the results to a student survey covering more than 60% of active business development students in master programmes. The results suggest that the investigated programmes are practice-oriented, using practical examples. During COVID-19, different online platforms have been introduced at all three universities, widely used and adopted by both teachers and students and positive changes have been incorporated in teaching after the return to face-to-face. New digital trends and skills are already present in the curriculum, but students are less aware of them, so further development is needed in this area. Also, developments in terms of providing infrastructural, networking and financing-related services would be highly valued by students with entrepreneurial intent.
‘A chain of deep-laid and premeditated villainy’
Authors: Doherty Bernard
Published: November 2022

The flurry of recent interest in what scholars have dubbed ‘conspirituality’ has focused attention on the intersection between conspiracy theories and the overlapping subcultures of New Age, alternative, and esoteric spirituality. These important insights have also highlighted the extensive histories of cultures of conspiracy which exist within larger religious traditions and the related question of why adherents of specific varieties of religion appear to be highly susceptible to strains of conspiracist thinking. To further illustrate the ubiquity of conspiracy theory in contemporary spirituality, this article offers a historical overview of the intricate culture of conspiracy which has developed in the Roman Catholic Church since at least the French Revolution by outlining its five major permutations: anti-Masonry, antisemitism, anti-communism, anti-Satanism and anti-modernism. This article demonstrates the centrality of conspiracy theories in how a sizeable portion of Roman Catholics have responded to what they perceive as the threatening aspects of modernity as well as the renewed popularity of conspiracy theories within a Roman Catholic spiritual milieu during Pope Francis’s papacy.
Selling (Con)spirituality and COVID-19 in Australia
Authors: Halafoff Anna , Marriott Emily , Fitzpatrick Ruth , Weng Enqi
Published: November 2022

Conspirituality—the merger of conspiracy theories and spirituality—has attracted significant global media and scholarly attention during the COVID-19 pandemic. This article expands upon the ‘two core’ conspiritual convictions proposed by Ward and Voas that ‘1) a secret group covertly controls, or is trying to control, the political and social order, and 2) humanity is undergoing a “paradigm shift” in consciousness’. We identify an additional ten key convictions central to (con)spirituality, including those that result in vaccine hesitancy and/or refusal. We chose to bracket the ‘con’ to problematize the term, and to encompass a wider spectrum of spiritual beliefs and practices, including those that are non-controversial, those that may be deceptive cons, and/or those that draw on conspiracy theories. The article presents an analysis of these twelve (con)spiritual convictions, focusing on a sample of ‘Aussie Warriors’ selling (con)spirituality, and also on influencers attempting to counter the spread of dis/misinformation within wellness circles. In so doing, the article provides a more nuanced understanding of (con) spirituality and vaccine hesitancy, and a greater knowledge of the benefits and risks of spiritual practices and ideas during and beyond the COVID-19 pandemic.
Marion Maddox (ed.), Charles Strong’s Australian Church: Christian Social Activism 1885–1917
Authors: Hancock Rosemary
Published: November 2022

Marion Maddox (ed.), Charles Strong’s Australian Church: Christian Social Activism 1885–1917. Melbourne: Melbourne University Press, 2021, pp. 208, ISBN: 9780522877892 (hbk).
Careless Response Processes are Heterogeneous: Comment on Goldammer et al. (2020)
Authors: Denison Alexander , Wiernik Brenton
Published: November 2022

Goldammer et al. (2020) examined the performance of careless response detection indices by experimentally manipulating survey instructions to induce careless responding, then compared the ability of various indices to detect these induced careless responses. Based on these analyses, Goldammer et al. concluded that metrics designed to detect overly consistent response patters (i.e. longstring and IRV) were ineffective. In this comment, we critique this conclusion by highlighting critical problems with the experimental manipulation used. Specifically, Goldammer et al.’s manipulations only encouraged overly inconsistent, or random, responding and thus did not induce the full range of behavior that is present in natural careless responding. As such, it is unsurprising that metrics designed to detect overly consistent responding appeared to be ineffective. Because the full range of careless behavior was not induced, Goldammer et al.’s study cannot address the utility of longstring or other consistency metrics. We offer recommendations for alternative experimental manipulations that may produce more naturalistic and diverse careless responding.
ACOUSTIC ADMITTANCE OF AN ALUMINIZED COMPOSITE SOLID PROPELLANT BY LASER DOPPLER VELOCIMETRY AT LOW PRESSURE
Authors: Rajak Rajendra , Chakravarthy S. R.
Published: November 2022

The present study involves the use of laser Doppler velocimetry (LDV) to determine the acoustic admittance of an aluminized composite solid propellant at low mean chamber pressure. The aim of this study is to measure the fluctuating velocity component perpendicular to the burning surface of the particles in the gaseous phase above the burning surface of the aluminized composite solid propellant for the imposed acoustic pressure oscillations. To check the accuracy and precision of the mini-LDV used in this study the acoustic mode shape was generated for the imposed acoustic oscillations with amplitudes of 215 and 6 Pa. The results obtained are very satisfying; they show that the predicted acoustic velocity mode shape matches with the generated mode shape using the LDV. The response function of a solid propellant indicates the inclination of the propellant to cause acoustic combustion instability. Both velocity fluctuations and imposed pressure fluctuations are measured experimentally and used to determine the acoustic admittance of the solid propellant and hence deducing the pressure coupled response function from acoustic admittance. The probe volume of the laser is maintained at a constant distance of 800-900 μm from the burning surface by a servomechanism using a linear actuator. The incorporation of the linear actuator dramatically increases the number of particles passing through the laser probe volume. The linear actuator is controlled using a microcontroller and the servomechanism is operated under an open loop system. A high-pressure window bomb is designed and fabricated. Low-frequency ranges (140-280 Hz) of the longitudinal acoustic modes are investigated in this paper. Tests were conducted at a mean chamber pressure of 0.5 MPa. To generate the acoustic pressure oscillations a rotary valve is designed and fabricated. The rotary valve generates a standing wave of the characterizing frequency depending upon the length of the chamber. Tests are conducted for two aluminized composite solid propellants. The results obtained are in good agreement with the literature for the pressure coupled response function at these mean chamber pressures.
ADAPTIVE PHASE-FIELD CONCURRENT MULTISCALE METHOD FOR EFFICIENT SIMULATION OF QUASI-BRITTLE FRACTURE
Authors: Ren Bangke , Zhu Hehua
Published: November 2022

An adaptive phase-field concurrent multiscale method for efficient simulation of quasi-brittle fracture is presented. In this method, the analysis model is first subjected to coarse mesh discretization and the corresponding damage phase field calculation analysis. Then, adaptive dynamic local mesh refinement is performed for the coarse scale elements exceeding the given damage threshold during the iterative process. The locally refined mesh is defined as the local subdomain, the outermost coarse elements of the refined mesh, and the coarse elements without refinement are defined as the global subdomain. The variant s-version method is used to realize the direct coupling connection of mismatched meshes in different subdomains and the application of the continuity condition of field variables on the global-local subdomain interface. The division of the local subdomain, the global subdomain, and their overlapping domain are dynamically updated with the crack propagation path in the proposed method. The generation of the global-local computing mesh has great flexibility without the need for scale separation, which provides a more concise and flexible implementation for multiscale phase field adaptive simulation. The proposed method overcomes the extra burden and complexity of field variable conversion between coarse and fine scales, imposition of continuity conditions, and program implementation in existing phase field multiscale methods, which can be easily applied to the analysis on damage-fracture behavior of quasi-brittle structures. Typical examples verify the correctness, robustness, and advantages of the method.
AUTOENCODER NEURAL NETWORK FOR CHEMICALLY REACTING SYSTEMS
Authors: Zhang Pei , Sankaran Ramanan
Published: November 2022

Incorporating detailed chemical kinetic models is critical for accurate simulations of reacting flows. However, detailed models involve a large number of thermochemical (TC) state variables. Solving the governing equations to evolve these TC variables becomes impractical for real-world applications. In this work, we propose an autoencoder (AE) neural network (NN)-based reduced model to accelerate such simulations. The AE NN is first trained to find a low-dimensional latent representation of the TC states. Then, the evolving state of a chemical system can be tracked by solving the equations of the latent variables instead of the original TC equations. We demonstrate the reduced model in a syngas CO/H2 combustion system, using training data collected from canonical perfectly stirred reactors (PSRs). It is found that the AE model can reduce the dimension of the combustion system from 12 to 2 while maintaining low reconstruction error and excellent elemental mass conservation for the test dataset. In the a posteriori test, the combustion states obtained from solving the two latent equations are compared to those from solving the 12 equations of the full model. The AE reduced method is found to be able to capture the diverse combustion states on the top two branches of the S-curve well including the extinction turning point, but with higher prediction errors for states near the ignition turning point.
THE EFFECT OF LOCAL THERMAL NON-EQUILIBRIUM AND MAGNETIC FIELD ON THE STABILITY IN A VERTICAL CHANNEL FILLED WITH NANOFLUID
Authors: Srinivasacharya Darbhasayanam , Barman Dipak
Published: November 2022

In this investigation, the influence of local thermal non-equilibrium (LTNE) on the onset of convection in a channel occupied with nanofluid was examined. The flow took place in the presence of a transverse magnetic field. The Buongiorno and two-field models (each independently signifying the fluid and particle phases) were used for the nanofluid and energy equation, respectively. A normal mode analysis was applied to obtain the eigenvalue problem for the disturbed state, which was solved using the Chebyshev spectral collocation technique. The effects of the governing parameters on the Rayleigh number and corresponding wavenumber are presented graphically. It was noticed that the concentration Rayleigh number, inter-phase heat transfer parameter, and modified diffusivity ratio had a destabilizing effect, while the modified thermal capacity ratio, thermal diffusivity ratio, Lewis number, and modified particle density increment had a stabilizing effect on the system.
Critical state shear strength at concrete–sand–bentonite slurry interfaces: mix proportions and rate effects
Authors: O'Dwyer K. G. , McCabe B. A. , Sheil B. B.
Published: November 2022

This paper describes direct shear testing of a range of sand–bentonite slurry mixes, identified as a gap in the literature. In the absence of a concrete interface, there was an apparent transition zone from sand-governed strength (bentonite content ≤30%) to clay-governed strength (bentonite content ≥80%), which was linked to the sample void ratio. When a concrete interface was introduced, the critical stress ratio (critical state shear stress normalised by the effective normal stress) was found to change linearly with bentonite slurry content, reflecting an interface sliding failure mechanism. The testing also considered the effect of shearing rates ranging from 0·0025 to 10 mm/min on interface shear strength. The mixtures containing greater bentonite slurry content displayed a greater decrease in the critical stress ratio with increasing shear rate. Very few studies have explored the influence of the relative sand–clay mix composition on interface shear resistance; these results provide a better understanding of their mechanical behaviour and forms a basis for future research in this area.
Artificial Intelligence You Can Trust: What Matters Beyond Performance When Applying Artificial Intelligence to Renal Histopathology?
Authors: Ayorinde John O.O. , Citterio Federica , Landrò Matteo , Peruzzo Elia , Islam Tuba , Tilley Simon , Taylor Geoffrey , Bardsley Victoria , Liò Pietro , Samoshkin Alex , Pettigrew Gavin J.
Published: November 2022

Although still in its infancy, artificial intelligence (AI) analysis of kidney biopsy images is anticipated to become an integral aspect of renal histopathology. As these systems are developed, the focus will understandably be on developing ever more accurate models, but successful translation to the clinic will also depend upon other characteristics of the system.

In the extreme, deployment of highly performant but “black box” AI is fraught with risk, and high-profile errors could damage future trust in the technology. Furthermore, a major factor determining whether new systems are adopted in clinical settings is whether they are “trusted” by clinicians. Key to unlocking trust will be designing platforms optimized for intuitive human-AI interactions and ensuring that, where judgment is required to resolve ambiguous areas of assessment, the workings of the AI image classifier are understandable to the human observer. Therefore, determining the optimal design for AI systems depends on factors beyond performance, with considerations of goals, interpretability, and safety constraining many design and engineering choices.

In this article, we explore challenges that arise in the application of AI to renal histopathology, and consider areas where choices around model architecture, training strategy, and workflow design may be influenced by factors beyond the final performance metrics of the system.
INTERACTION BETWEEN THE RUSSIAN FEDERATION AND THE PEOPLE'S REPUBLIC OF CHINA THROUGH THE USE OF "SOFT POWER" AT THE TURN OF THE XX AND XXI CENTURIES
Authors:   Ufa State Petroleum Technological University, Wang Junpeng , Nurgaliev A.R. ,   Ufa State Petroleum Technological University, Ibragimov A.R. ,   Ufa State Petroleum Technological University
Published: November 2022

The authors in the article discuss J. Nye's concept of «soft power» and the tools of influence of the culture of one state on another state. The purpose of this influence is to provide the most favorable conditions for negotiations between states, as well as to facilitate interaction between them. The authors consider the basis of intangible influence of one state on another, as well as the difference in approaches to the understanding of the concept of «soft power» between domestic and foreign experts. For example, the identification and formation of the concept of so-called «acute force» – as a development of the ideas of «soft power» J. Nye. The authors examine examples of the Russian Federation's use of the concept of «soft power» in relation to China at the turn of the 20th and 21st centuries and also examine the history of the relationship between Russia and China, international treaties on cooperation and organizations aimed at expanding cooperation between China and Russia (such as the «Russian world» foundation on the Russian side and the Confucius Institutes on the Chinese side). The authors consider the areas in which the concept of «soft power» was used to improve interaction and interpenetration of cultures of the two countries, identified their main characteristics of this interaction: expanding the scope and scale of cooperation in education, sports, medicine, science, film and culture, which helped to strengthen the interaction between the countries in political, economic and cultural terms, changing the content of this interaction from confrontation to compromise, highlighting the cultural characteristics of the n For example, it was revealed that in the interaction with the PRC from the Russian Federation are used only the tools of «soft power», without the use of «hard power». The analysis of interaction between Russia and China at the turn of the century revealed the existing problems of interaction and made it possible to make a forecast of their development. The article may be useful for businessmen and regional scientists who are engaged in the problems of Russia – China interaction.
Extrafloral nectaries in Nephelium lappaceum (Sapindaceae)
Authors: Villatoro-Moreno Hernán , Solís-Montero Lislie , González-Gómez Rebeca , Maza-Villalobos Susana , Cisneros-Hernández Juan , Castillo-Vera Alfredo
Published: November 2022

Background: There is no previous evidence in the literature that documents the presence of extrafloral nectaries (EFNs) or the exomorphology of domatia in Nephelium lappaceum (rambutan), a fruit tree native to Malaysia introduced in various American countries.

Question: It is the presence of EFNs responsible for the frequent visit of ants to young leaves of Nephelium lappaceum?

Study site and dates: This study was conducted in a commercial rambutan orchard in the town of Francisco I. Madero, municipality of Frontera Hidalgo (Chiapas, Mexico) during the period September 2020-February 2021.

Methods: External morphology of EFNs and domatia were studied using scanning electron microscopy. Nectar sugar concentration produced by EFNs was determined by refractometry. EFNs location on the plant and the frequency of visiting ants were quantified by visual counting.

Results: A description of the external morphology of EFNs and domatia, as well as their location on rambutan leaflets are presented. A volume of 0.3 ± 0.2 µL/EFN of a nectar (9.3 ± 0.6 °Bx) was collected each day. Ten species of ants feeding on the nectar excreted by the EFNs were identified.

Conclusion: Evidence of the presence of NEFs on rambutan leaflets is presented, which have an external morphology and location different from that observed in domatia, producing a sweet nectar used as food by a large community of ants.
Comparative stem anatomy of three species of Coryphantha (Cactoideae-Cactaceae)
Authors: Avila-Escobar José Emiliano , Jiménez-Noriega Mayte Stefany , De la Rosa-Tilapa Alejandro
Published: November 2022

Background: The genus Coryphantha has the second largest number of species of the tribe Cacteae-Cactaceae. Morphologically, it has been reported that the stem presents mainly globose, ovoid and cylindric variations. However, at the anatomical level, descriptions are scarce and focused on particular tissues (epidermis or xylem). The aim of this work is to contribute to the anatomical knowledge of the genus.
Questions and/or Hypotheses: What are the anatomical characteristics that differentiate one species from another? Does the presence of crystals allow differentiation between species?
Study species: Coryphantha clavata, Coryphantha cornifera and Coryphantha radians.
Site and years of study: San Luis Potosí and Querétaro, Mexico; 2017, 2020.
Methods: Three individuals per species were collected, and conventional histological techniques were applied. Anatomical descriptions were made for different tissues, and structural characteristics were measured for each species.
Results: The species exhibited the greatest differences in the epidermis and hypodermis, such as the presence of subepidermal stomata (C. radians), three-layered hypodermis (C. clavata), and non-collenchymatous hypodermis (C. cornifera). Crystals were not observed in the epidermises but instead in the hypodermes, which exhibited crystal shapes of druses (C. cornifera and C. radians), prisms and round bodies (C. clavata). In the cortical tissue, C. clavata had abundant mucilage cells. The observed xylem and phloem tissues exhibited characteristics similar to those of other Coryphantha species.
Conclusions: The anatomical characteristics of the epidermis and hypodermis are considered of high systematic value and could be used to distinguish between species of the genus.
Telefonische Sprechstunde am Institut und der Poliklinik für Arbeits-, Sozial- und Umweltmedizin der Friedrich-Alexander-Universität Erlangen-Nürnberg
Authors:   Institut für Arbeits-, Sozial- und Umweltmedizin, Friedrich-Alexander-Universität Erlangen-Nürnberg, Geiger Maximilian , Drexler Hans ,   Institut für Arbeits-, Sozial- und Umweltmedizin, Friedrich-Alexander-Universität Erlangen-Nürnberg
Published: November 2022

Telephone consultation at the Institute and Outpatient Clinic of Occupational, Social, and Environmental Medicine at the Friedrich-Alexander-University of Erlangen-Nürnberg Objective: With the spread of the COVID-19 pandemic, the goal was to establish telephone consultations at the Institute and Outpatient Clinic of Occupational, Social, and Environmental Medicine at the Friedrich-Alexander-University of Erlangen-Nürnberg. Methods: After initial contact, the patient’s suitability for a telephone consultation is verified and an outpatient appointment can be explicitly requested. Prior to the consultation, written consent and a referral must be submitted; the submission of additional documents is optional. During the telephone appointment, the data are first compared. If there is any indication of a need for biomonitoring, the samples are usually taken by the referring physician and the analysis is performed in our laboratory. Finally, a doctor’s letter is written. Results: Since March 2020, 139 patients out of 253 referrals have been advised by telephone and 30 on an outpatient basis. Of all telephone consultation cases, 53.2 % (n = 74) were female. The mean age of patients advised by phone was 51.3 years, the mean duration of the call was 54.3 minutes, and the mean potential travel distance was 69.7 kilometres. A potential 9,688.8 kilometres of travel were thus avoided due to the availability of phone consultations. Biomonitoring was initiated in 23.7 % of cases, technical information was submitted in 88.5 %, further diagnostics were recommended in 37.4 %. A telephone consultation was deemed useful by physicians in 99.3 % of cases. Conclusion: Our model of a telephone consultation in the areas of occupational and environmental medicine enabled meaningful and effective patient care including both anamnesis and medical advice. Keywords: telephone consultation – consultation in occupational and environmental medicine – telemedicine
Chemielehrerin ohne Dienstunfallfürsorge
Authors:   Fakultät Wirtschaftsingenieurwesen der Hochschule München, Wilrich Thomas
Published: November 2022

Dienstunfälle oder Berufskrankheiten anerkennen zu lassen kann zuweilen schwierig sein – die Beschäftigten haben die volle Beweislast. Bei Unfällen kommt es auf ein „plötzliches Ereignis“ an. Bei Krankheiten muss man ihnen „besonders“ ausgesetzt sein. Eine Chemielehrerin scheiterte mit ihrer Klage beim Verwaltungsgericht.
COVID-19-Quarantäne als Urlaub
Authors: Holtstraeter Reinhard
Published: November 2022

Erkrankt ein Arbeitnehmer1 während seines Erholungsurlaubs und tritt Arbeitsunfähigkeit ein, so wird dieser Zeitraum nicht auf den Jahresurlaub angerechnet. Die Krankheit steht dem Erholungszweck entgegen. Das Gericht hatte vorliegend zu entscheiden, ob dies auch im Falle einer während des Erholungsurlaubs ergangenen behördlichen Absonderungsanordnung für einen nicht erkrankten Ansteckungsverdächtigen gilt.
Arbeitsmedizin digital – Neue Präventionspfade und Versorgungswege in der betrieblichen Prävention und Gesundheitsförderung?
Authors:   Deutsche Gesellschaft für Arbeitsmedizin und Umweltmedizin, München, Nesseler Thomas
Published: November 2022

Die modernen Informations- und Kommunikationstechnologien (IKT) bestimmen zunehmend das heutige Denken und Handeln. Auch in der Medizin gewinnen sie immer größere Bedeutung, nicht nur in telemedizinischen Verfahren wie etwa Video-Konsilen und Video-Sprechstunden. Dies umso mehr, da auch die Bundesärztekammer inzwischen das einmal eherne und lange tradierte Fernbehandlungsverbot für Ärztinnen und Ärzte inzwischen im Rahmen eines Ärztetagsbeschlusses gelockert hat.
Validating the Cognitive Diagnostic Assessment and Assessing Students’ Mastery of ‘Parallel and Perpendicular Lines’ Using the Rasch Model
Authors: CHIN Huan , CHEW Cheng Meng , YEW Wun , MUSA Muzirah
Published: November 2022

‘Parallel and Perpendicular Lines’ is an important topic that serves as a basis for the learning of a more advanced geometric concept in later years. Yet, this topic is hard to master by the students. To pinpoint students’ weaknesses in this topic, this study sought to develop a cognitive diagnostic assessment (CDA) to assess students’ mastery of ‘Parallel and Perpendicular Lines’. The validation of the CDA and the use of CDA in measuring students’ mastery of ‘Parallel and Perpendicular Lines’ was documented in this article. The content validation involved two subject matter experts, while the pilot test involved 154 Year Four students from Kedah state of Malaysia selected using cluster sampling. The experts' consensus on the relevancy of test items was captured by calculating the content validity index. The psychometric properties of items and reliability of assessment were analysed based on Rasch Measurement Model. The validity of the assessment content was supported with an acceptable content validity index of 1.00 (>.80). The findings of Rasch analysis span across all ranges of abilities level and hence fit students’ competence well. With an acceptable person separation index of 1.58 (> 1.50), person separation reliability of .74 (>.70), and KR-20 coefficient of .78 (>.70), the CDA developed is reliable. The findings of assessing students’ mastery level highlighted their weaknesses in defining the properties of perpendicular lines and drawing perpendicular lines. The findings of this study would encourage practitioners to utilise it in the mathematics classroom for diagnosing students’ weaknesses and hence plan for remedial instruction.
Intelligent mobility: A model for assessing the safety of children
traveling to school on a school bus with the use of intelligent bus stops
Authors: Murawski Jakub , Szczepański Emilian , Jacyna-Gołda Ilona , Izdebski Mariusz , Jankowska-Karpa Dagmara
Published: November 2022

The aim of the article is to develop a model for assessing the safety of children’s travel.
Safety is the most important indicator describing the mobility system of children, even more
important than the costs of operating it. Due to the dynamic development of intelligent
solutions, it is possible to undertake additional activities supporting the improvement of
children’s safety when traveling to and from school. However, their implementation requires
an adequate assessment of a children’s mobility system. Currently, there are no solutions
that could comprehensively support the decision-making process in this sphere. The article
presents the issues of children’s mobility, a literature review in this area, mathematical model for assessing school bus travel, and a computational example. The presented approach is
an original solution allowing for evaluation of the existing systems and their development
scenarios. In addition, it enables the comparison of children mobility systems of different
complexity and scale
Volumetric wear characteristics as a result of the tribological interaction
between the soil with working parts cultivator's and plough's
Authors: Vrublevskyi Oleksandr , Napiórkowski Jerzy , Olejniczak Klaudia , Gonera Jarosław
Published: November 2022

This paper is concerned with the possibility of applying modern non-contact methods for
assessing the wear as a result of tribological interaction between working bodies and the
soil. An original method for wear testing using the test space discretization based on the 3D
scanning technology was employed. A localized volumetric wear coefficient was proposed,
allowing for wear analysis and improving the accuracy of the Holm-Archard model. The
coefficient of local volumetric wear shows the influence of the nominal shape and the slip
trajectory of the abrasive particle along the elementary surface on the intensity of wear. At
local volumetric wear coefficient > 0.3, this factor determines the intensity of surface wear.
Volumetric wear characteristics are the basis for prediction of wear consequences for different materials and techniques of reinforcement of working surfaces, subject to intensive wear
in abrasive soil mass. The reliability of the study is confirmed by the comparison with the
mass method for wear assessment and the results of the application of the proposed method
for different conditions of abrasive wear of operating parts
Analysis and prediction of leak detection in the low-pressure
heat treatment of metal equipment
Authors: Kłos Sławomir , Patalas-Maliszewska Justyna , Bazel Michal
Published: November 2022

The low-pressure heat treatment of metals enables the continuous improvement of the mechanical and plastic properties of products, such as hardness, abrasion resistance, etc. A
significant problem related to the operation of vacuum furnaces for heat treatment is that
they become unsealed during operation, resulting from the degradation of seals or the thermal expansion of the construction materials. Therefore, research was undertaken to develop
a prediction model for detecting leaks in vacuum furnaces, the use of which will reduce the
risk of degradation in the charge being processed. Unique experimental studies were carried
out to detect leakages in a vacuum pit furnace, simulated using the ENV 116 reference slot.
As a consequence, a prediction model for the detection of leaks in vacuum furnaces- which
are used in the heat treatment of metals- was designed, using an artificial neural network.
(93% for MLP 15-10-1) was developed. The model was implemented in a predictive maintenance system, in a real production company, as an element in the monitoring of the operation
of vacuum furnaces.
An anomaly detection method based on random convolutional kernel and
isolation forest for equipment state monitoring
Authors: Shu Xinhao , Zhang Shigang , Li Yue , Chen Mengqiao
Published: November 2022

Anomaly detection plays an essential role in health monitoring and reliability assurance of
complex system. However, previous researches suffer from distraction by outliers in training
and extensively relying on empiric-based feature engineering, leading to many limitations
in the practical application of detection methods. In this paper, we propose an unsupervised
anomaly detection method that combines random convolution kernels with isolation forest to
tackle the above problems in equipment state monitoring. The random convolution kernels
are applied to generate cross-dimensional and multi-scale features for multi-dimensional
time series, with combining the time series decomposing method to select abnormally sensitive features for automatic feature extraction. Then, anomaly detection is performed on the
obtained features using isolation forests with low requirements for purity of training sample.
The verification and comparison on different types of datasets show the performance of the
proposed method surpass the traditional methods in accuracy and applicability.
Affirmed Crowd Sensor Selection based Cooperative Spectrum Sensing
Authors: Rao D Raghunatha , Prasad T Jayachandra , Prasad M N Giri
Published: November 2022

The Cooperative Spectrum sensing model is gaining importance among the cognitive radio network sharing groups. While the crowd-sensing model (technically the cooperative spectrum sensing) model has positive developments, one of the critical challenges plaguing the model is the false or manipulated crowd sensor data, which results in implications for the secondary user’s network. Considering the efficacy of the spectrum sensing by crowd-sensing model, it is vital to address the issues of falsifications and manipulations, by focusing on the conditions of more accurate determination models. Concerning this, a method of avoiding falsified crowd sensors from the process of crowd sensors centric cooperative spectrum sensing has portrayed in this article. The proposal is a protocol that selects affirmed crowd sensor under diversified factors of the decision credibility about spectrum availability. An experimental study is a simulation approach that evincing the competency of the proposal compared to the other contemporary models available in recent literature.
The comparative analysis of transradial and transfemoral vascular approaches for chemoembolization of pancreatic cancer
Authors: Khayrutdinov Evgeny R. , Gromov Dmitriy G. , Arablinskiy Alexander V.
Published: November 2022

BACKGROUND: Pancreatic cancer is one of the most aggressive malignant neoplasms, and the results of treatment of which remain extremely unsatisfactory. One of the methods to increase the effectiveness of surgical treatment of pancreatic cancer is selective oil chemoembolization of the pancreatic arteries. Transfemoral access is typically used as a vascular access during this type of intervention, in which complications from the vascular access are often observed.
AIM: This study aimed to analyze the results of the use of transradial and transfemoral approaches for chemoembolization of pancreatic cancer.
MATERIALS AND METHODS: We analyzed the results of chemoembolization of pancreatic arteries in 32 patients with pancreatic cancer. Transfemoral access was used in 16 (50%) patients and transradial access in 16 (50%) patients. According to the main clinical and anamnestic data, both groups were comparable. The endpoints of the study were technical success and complication rate of chemoembolization, total duration of the procedure, time needed for catheterization of the target artery, radiation exposure, and degree of discomfort for the patient.
RESULTS: Chemoembolization of pancreatic arteries was successfully performed in 100% of patients in both groups. Major vascular complications were observed in three (18.8%) patients in the transfemoral access group and in one (6.3%) in the transradial access group (p=0.6). The total duration of the procedure and the time needed for catheterization of the target artery were 54.546.61 and 51.306.46 min (p=0.17) and 12.7 and 13.25 min (p=0.72), respectively. Radiation exposure was 0.680.10 mSv in the transfemoral access group and 0.650.10 mSv in the transradial access group (р=0.4). Transradial access was associated with a statistically significant reduction in all parameters of procedural discomfort.
CONCLUSION: In terms of efficiency and safety of use, the transradial approach is not inferior to the traditional transfemoral approach, and in terms of patient comfort, it can be recommended as a priority for chemoembolization of the pancreatic arteries.
Development of digital tools to enable remote ultrasonic inspection of fusion reactor in-vessel components
Authors: Sanderson R , Sanderson A , Akowua K , Livesey H
Published: November 2022

The feasibility of a new approach for pipe inspection has been explored using digital twins to enhance guided wave inspection. Guided wave inspection is well established in the oil & gas industry to remotely screen long lengths of predominately straight pipeline for corrosion. However,
the inspection of complex pipe geometries remains a challenge. Nuclear fusion facilities are one such potential application. Fusion reactors have a network of many kilometres of service pipes with complex features, including multiple pipe bends. Some of these pipes could be used for actively
cooling components such as the first wall and divertor. Guided ultrasonic wave inspection has the significant advantage of offering 100% coverage of the pipe wall over tens of metres of pipe from a remote test location. This is a highly attractive feature, particularly in the nuclear industry
where it is important that human presence in high-risk areas is prohibited due to high radiation doses and temperatures. In this work, finite element wave propagation models have been investigated as digital twins of fusion reactor components. The models have been used to calculate bespoke
excitation signals that will allow for full volumetric inspections of these complex pipes to be carried out from a remote location. For the first time, a digital twin technique has been developed that is predicted to successfully correct the distortion in guided wave signals caused by multiple
pipe bends. The technique is predicted to yield an order of magnitude improvement in detection capability over conventional guided wave inspection. The digital twin technique presented here therefore shows significant promise for the future inspection of nuclear fusion power plant pipes.
Deep learning-based defect detection in industrial CT volumes of castings
Authors: Dakak A R , Kaftandjian V , Duvauchelle P , Bouvet P
Published: November 2022

Industrial X-ray computed tomography (CT) has proven to be one of the most powerful non-destructive testing (NDT) methods for the inspection of light metal castings. The generated CT volume allows for the internal and external geometry of the specimen to be measured, casting defects
to be localised and their statistical properties to be investigated. On the other hand, CT volumes are very prone to artefacts that can be mistaken for defects by conventional segmentation algorithms. These artefacts require trained operators to distinguish them from real defects, which makes
CT inspection very time consuming if it is to be implemented on the production line. Foundries using this inspection method are constantly looking for a module that can perform this interpretation automatically. Based on CT data of aluminium alloy automotive and aerospace specimens provided
by industrial partners, an automated approach for the analysis of discontinuities inside CT volumes is developed in this paper based on a two-stage pipeline: 2D segmentation of CT slices with automatic deep segmentation using U-Net to detect suspicious greyscale discontinuities; and classification
of these discontinuities into true alarms (defects) or false alarms (artefacts and noise) using a new convolutional neural network classifier called CT-Casting-Net. The choice of each model and the training results are presented and discussed, as well as the efficiency of the approach as an
automatic defect detection algorithm for industrial CT volumes using metrics relevant to the field of non-destructive testing. The approach is tested on six new CT volumes with 301 defects and achieves an object-level recall of 99%, a precision of 87% and a voxel-level intersection-over-union
(IoU) of 62%.
Improving diagnosis for disorders of consciousness: The case for a novel multi-paradigm approach
Authors: Wang Yi An , Groh Adam M.R.
Published: November 2022

After a traumatic brain injury, patients often experience a period of impaired consciousness characterized by a diminished ability to perceive external stimuli (i.e., awareness) and a diminished responsiveness to stimuli, when perceived (i.e., arousal) [1,2]. These impaired levels of consciousness are defined as disorders of consciousness (DoC), a spectrum typically defined by three states of consciousness: coma, unresponsive wakefulness syndrome (UWS, formerly known as vegetative state), and minimally conscious state (MCS) [1].