bluuebunny/crossref_metadata_2025_split huggingface dataset:
The mussel Semimytilus patagonicus (Mytilida: Mytilidae) and the worm Pseudonereis gallapagensis (Phyllodocida: Nereididae) as ecotoxicological tools for detergent pollution in marine environments
Authors: Príncipe-Morillo Fabiola Marilyn , Minaya-Angoma David , Alvariño-Flores Lorena , Iannacone-Oliver Jose , Rodriguez-Santiago Amparo 
Published: October 2022

Introducción: El bivalvo Semimytilus patagonicus es un bioindicador potencialmente útil por su mecanismo de alimentación, y el gusano Pseudonereis gallapagensis también es interesante como bioindicador por ser bentónico, abundante y fuente de alimento para el calamar Doryteuthis gahi. Sin embargo, su sensibilidad a los contaminantes no ha sido suficientemente estudiada. Objetivo: Probar la utilidad del mejillón S. patagonicus y el poliqueto P. gallapagensis como herramientas ecotoxicológicas para detergentes en el medio marino. Métodos: Se utilizaron 120 individuos de S. patagonicus de Miraflores y 120 de P. gallapagensis de Barranco (ambos cerca de la ciudad de Lima, Perú). Para los bioensayos se utilizaron dos detergentes aniónicos (ingrediente activo, ia, dodecilbenceno sulfonato de sodio). Para S. patagonicus, con una longitud valver promedio de 32.3 ± 6.4 mm, probamos Ariel Doble Poder® (90 %) a concentraciones de 17.5, 35, 70 y 140 mg·ia·l-1, evaluadas a las 48 y 72 h de exposición; y para P. gallapagensis, con una longitud corporal total de 20.4 ± 8.8 mm, probamos Caricia® a 62.5, 125, 250, 500 y 1 000 mg·ia·l-1 a las 24, 48 y 72 h de exposición. Resultados: Los valores de CL50 (Concentración Letal Media) fueron de 34.95 mg·ia·l-1 para S. patagonicus y 102.48 mg·ia·l-1 para P. gallapagensis a las 72 h de exposición. Los detergentes fueron tóxicos para S. patagonicus y levemente tóxicos para P. gallapagensis. La clasificación de riesgo para S. patagonicus es “nocivo” y para P. gallapagensis “no clasificable”. Conclusiones: Estos dos bioindicadores permiten evaluar la toxicidad aguda del detergente comercial a base de SDBS en el ambiente acuático marino.
Los eurocódigos de estructuras
Authors: Lahuerta-Vargas Javier 
Published: October 2022

INTRODUCCIÓN
1.1 Los Eurocódigos
1.2 Fines de los Eurocódigos
1.3 Bases de los Eurocódigos
1.4 Aplicación de los Eurocódigos
1.5 Eurocódigos que se comentan
2 EUROCÓDIGO 1 REGLAS COMUNES
2.1 Objeto
2.2 Exigencias
2.3 Los estados límites
2.4 Acciones
2.5 Combinaciones de acciones
2.6 Propiedades de los materiales
2.7 Modelos matemáticos y experimentales
2.8 Supervisión y conformidad
3 EUROCÓDIGO 2 ESTRUCTURAS DE HORMIGÓN
3.1 Generalidades
3.2 Métodos de análisis
3.3 Hormigones
3.4 Hormigones ligeros
3.5 Aceros
3.6 Solicitaciones normales y transversales
3.7 Pandeo
3.8 Estados límites de utilización
3.9 Otras reglas
4 EUROCÓDIGO 5 ESTRUCTURAS DE MADERA
4.1 Generalidades
4.2 Bases de concepción y de cálculo
4.3 Materiales
4.4 Cálculo de piezas
4.5 Flexopandeo
4.6 Vigas de canto variable y vigas curvas
4.7 Elementos compuestos
4.8 Uniones
5 EUROCÓDIGO 6 ESTRUCTURAS DE FÁBRICA
5.1 Generalidades
Students’ creativity and well-being during the forced distance learning period: The correlation between variables
Authors: Belyakova I. E. , Kecherukova М. А. , Murzina Yu. S. 
Published: October 2022

Introduction. The article is devoted to the study of the relationship of students’ creativity and their emotional well-being during the period of forced distance learning. It was found that students with a higher creative potential easier coped with periods of social restrictions, felt less anxiety, were better satisfied with the distance learning process, while experiencing a lack of face-to-face communication with the instructor.Aim. The aim of the current research was to identify the relationship between students’ creativity and their emotional well-being during the period of forced self-isolation in 2020–2021.Methodology and research methods. The research was carried out within the framework of health care pedagogy. The methodological basis of the study included pedagogical principles of promotion, maintenance and restoration of emotional health; development of knowledge, skills and abilities to maintain emotional health especially during online studies. Creativity was measured with the Torrance test of creative thinking; emotional state – with a well-being questionnaire created by the authors on the Google Forms platform. The study population was represented by 387 1–4-year bachelors studying the humanities (Philology, Linguistics, History, Sociology and Pedagogy) and technical sciences (Petroleum Engineering, Computer Science) at the Tyumen Industrial University, Tyumen State University and South Ural State Humanitarian and Pedagogical University.Results. Statistical analysis confirmed the hypothesis about the relationship of students’ creativity and their emotional well-being during the quarantine period. Students with higher scores on the Originality scale experienced less anxiety and stress during the quarantine period (r = –0.36*). A negative relationship was found between the variables “Originality” and “Comfort in using PPE” (r = –0.38*), “Development” and “Satisfaction with communication with the instructor” (r = –0.41**), “Fluency” and “Comfort of using PPE” (r = –0.49**). The ways of stress relief used by students during the period of self-isolation were identified and described. It was found that more than half of the students intuitively chose creative activities (61.3%) to improve their well-being.Scientific novelty. The scientific novelty lies in an attempt to present students’ creativity as a resource that requires special activation during the period of forced self-isolation within the general framework of health care pedagogy.Practical significance. Eleven forms and methods of creative interaction with students are suggested. Research findings aim at forming health preserving skills in students, especially during distance learning, by stimulating their creative resources.
Оценка уровня эмоционального интеллекта в межкультурной образовательной среде
Authors: Kuprina T. V. , Evtyugina A. A. , Minasyan S. M. , Taranova O. V. 
Published: October 2022

Introduction. Currently, the training of professionally competent specialists is a priority in the higher education system. One of the productive creative approaches is the development of emotional intelligence (EI/EQ), which contributes to the development of emotional intercultural competence to accelerate adaptation in a new intercultural environment.Aim. The aim of the research is to empirically determine the level of emotional intelligence in the intercultural context for further improving work with students of the humanities and economics specialities and proposing new techniques that develop emotional intercultural competence.Methodology and research methods. The methodological basis of the research is the concept of developing emotional intelligence as an integral part of soft skills. To study the level of emotional intelligence, the authors used the Mark Daniel Self-Scoring Emotional Intelligence Tests, which are a compilation of tests designed to study the level of emotional intelligence and determine the strengths and weaknesses of the test takers. The methods of psycho-diagnostics, comparison and generalisation of the obtained results were used. The test results were analysed using the SPSS.27 statistical package.Results. The research results help to understand the psychological characteristics of students of the humanities and economics specialities, taking into account the cultural context, which makes it possible to predict the difficulties and problems faced by teachers in the process of work with this type of students, to more accurately determine the characteristics and motives of their behaviour and the characteristics of the professional development of the individual. It also helps to select the right curriculum to meet students’ needs.Scientific novelty. The scientific novelty of the research consists in supplementing the existing knowledge in the field of EI about the psychological characteristics of representatives of the humanities and economics specialities in the context of intercultural communication and further forecasting their development based on correctly selected teaching methods.Practical significance. The presented features of students of the humanities and economics specialities can be employed by teachers when interacting with them and organizing the educational process, taking into account their interests and needs, as well as adjusting the level of development of EI. The results obtained can be useful in the preparation of educational and methodological complexes specifically designed for the development of emotional intercultural competence.
Znaczenie rolnictwa, polityki finansowej oraz instytucji finansowych w stymulowaniu wzrostu i rozwoju gospodarczego Japonii w latach 1868–1914
Authors: Klimiuk Zbigniew 
Published: October 2022

Współczesna historia gospodarki Japonii rozpoczęła się od przełomowego wydarzenia, jakim była Restauracja Meiji w 1868 r., która zapoczątkowała głębokie przemiany społeczne, polityczne i gospodarcze. Przedmiotem analizy w artykule są źródła finansowania wzrostu i rozwoju gospodarczego w Japonii w latach 1868–1914 oraz rola wyspecjalizowanych instytucji bankowych i pozabankowych, które, mobilizując kapitał oraz jego zasoby, razem wspierały procesy rozwojowe. Zgodnie z ogólnie przyjętymi zasadami podzielono źródła finansowania wzrostu gospodarczego na wewnętrzne (krajowe) oraz zewnętrzne (zagraniczne). Celem opracowania jest wykazanie znaczenia, jakie dla wzrostu gospodarczego Japonii miały jedne i drugie źródła finansowania, przy czym przy omawianiu pierwszych wyeksponowana została rola rolnictwa oraz skutecznie służący akumulacji publicznej – podatek gruntowy. Należy również pamiętać o powstaniu Banku Japonii. Bank centralny Japonii został założony dużo wcześniej niż wiele banków centralnych w Europie. Rozpoczął działalność już w październiku 1882 r. W jego statucie zawarte zostały zapisy dotyczące kontroli, wspierania systemu kredytowego oraz regulacji systemu walutowego. Do wybuchu I wojny światowej stworzono w Japonii mocne podstawy przemysłu oparte na rosnącym imporcie nowoczesnych technologii oraz wykorzystaniu wiedzy i kwalifikacji zagranicznych specjalistów. Szczególnie dynamicznie rozwijał się przemysł bawełniany i energetyczny w połączeniu z powiększającym się udziałem sektora prywatnego. Nadal jednak dominującą pozycję w strukturze gospodarczej zajmowało w tym okresie rolnictwo dostarczające żywności rosnącej liczbie ludności oraz coraz większej populacji mieszkającej w miastach.
Requirements for the use of E-learning in university education
Authors: AL-Momani Mohammad Omar , Rababa Elham Mahmoud 
Published: October 2022

E-learning is one of the most important modern methods of education, as it helps in solving the problem of the knowledge explosion, the increasing demand for education, expanding opportunities for admission to education, being able to train, educate and rehabilitating workers without and educating housewives, which contributes to raising the percentage of learners and eliminating on illiteracy. To reach scientific results in this research, the researcher was interested in analysing the concept and its definition and then its applications by analysing and synthesising many results from previous studies and writings without resorting to a field study or analysis of the content of textbooks. This study found that there is weak knowledge of the uses of e-learning in university education and the administration's lack of interest in developing teachers' skills in using e-learning in their teaching.

Keywords: Education, E-learning, interactive technology, modern methods;
Material Selection Process for Non-Metallic Flexible Buoyancy Bags Assembly in Decommissioning and Marine Salvage
Authors: Thiyahuddin Izzat , Ahamid Zulkifli , M Daud M Hafis , Abdul Rahman Azam , Sulaiman M Hairul , Abdul Hamid Ismail , Xianghai Jing , Liangbiao Xu , Wan Razali Wan M Razlan 
Published: October 2022

ABSTRACT
Offshore structure decommissioning and abandonment is a critical component in the life cycle of hydrocarbon production. In Malaysia, 11% of platforms and 8% of pipelines have been in service for more than 40 years, much exceeding their intended lifespan. Conventional methods of decommissioning offshore platform are inherently very costly with the mobilization and operation of HLV (Heavy Lift Vessel).
This study developed an Offshore Flexible Buoyancy Tank (OFBT) as the buoyancy assembly to execute future small structure removal operation. This study applies the structured material selection process to determine suitable material as buoyancy assembly enclosure. According to the concept, material selection seeks to determine the lightest, pressure-sustaining, fracture-resistant and cost-effective buoyancy bags suitable for the application. This is a problem with 3 objectives: minimize weight, minimize cost, and withstand the internal pressure in above or submerged conditions.
A range of material is tested based on the parameters, and it was determined that Two layers of PET membrane is proposed for OFBT with capacity not less than 380 kN/m. An additional layer is also required to protect the buoyancy bag from puncture or tear. Yard burst test testing is implemented to determine the accuracy of FEA model. A prototype OFBT is fabricated to consist of 3-layer flexible polymer sheet to create an air-containment enclosure.
Overall, the FEA correlates well with the result from the burst test. Both burst tests indicate the failure to occur the flange area. The circumferential stiffeners were observed to fail first followed by Longitudinal stiffeners. Results from this work is integrated in the research towards the development of novel flexible offshore buoyancy tank assembly for the removal of jacket structure in decommissioning and abandonment suited to the application in Malaysia.
Understand the Unconventional Reservoir Heterogeneity via Far-Field Sonic Imaging and Chemical Tracer Evaluations: A Case Study from Wulalike Shale Gas Exploration in Ordos Basin
Authors: Cui Ziyue , Xi Shengli , Ma Zhanrong , Wang Gang , Fu Ning , Yu Gaohong , Zhao Lei , Liu Yuan , Chen Yanyan , Li Yuanhua , Qu Changwei , Wang Qing , Ma Zeren , Le Calvez Joel Herve 
Published: October 2022

Abstract
One of the most challenging aspects of unconventional reservoirs is their heterogeneity. Natural fissures, faults, or laminations, which are the main causes for the heterogeneity, are either measured only on the wellbore or not measured at all. In our recent work on a Wulalike shale gas exploration well, we visualized the heterogeneity with three-dimensional far-field sonic imaging technology during logging, and we evaluated the uneven production profile in the horizontal laterals with chemical tracer during production test. The result of the two methods is highly consistent, which indicated the far-field sonic imaging technology is an effective way to understand reservoir heterogeneity, particularly for unconventional resources.
High-resolution image logging and three-dimensional far-field sonic imaging technology were introduced to a newly drilled horizontal well in Wulalike Shale gas. Multilevel multi-azimuthal acoustic waveforms were acquired with long enough record length to capture the reflections from the mentioned microscopic features. The innovative ray tracing inversion and three-dimensional slowness-time coherence (3D STC) methods were utilized on the filtered waveform to quantitatively determine the true dip and azimuth as well as the distance of the features from the wellbore. And as a result, only four depth intervals were identified by 3D far-field sonic where fractures extended away from the wellbore to far field. The distance of the fractures from the wellbore was in a range of 8 to 28 m.
Chemical tracers were deployed during the fracturing and completion phase to evaluate the new findings from the logging. The uneven production profile from the chemical tracer indicated that 4 out of the 17 stages were the major contributors for more than half of the gas production. Each lateral for those four stages were accompanied with the observation of fissure or lamination signature from the far-field sonic images and resistivity image logging data. This showed that this sonic imaging technology was effective to link the reservoir heterogeneity to its production, making it a valuable tool for the future unconventional reservoir evaluations.
A Thermodynamic Model for Prediction of Solubility of Elemental Mercury in Natural Gas, Produced Water and Hydrate Inhibitors
Authors: Lim Lay Tiong , Sørensen Henrik , Leekumjorn Sukit , Pottayil Adil 
Published: October 2022

Abstract
When it comes to mercury (Hg) there are strict regulation around health, safety and environment, and the level of Hg in discharge water. Further, Hg can potentially compromise the integrity of materials anywhere in the flow path of the produced fluid. Real-time onsite Hg monitoring presents health hazard from exposure to Hg and can also be economically prohibitive. Therefore, it is desirable to be able to reliably simulate Hg partitioning between the vapor, liquid hydrocarbon, and water phases. It is further of interest to evaluate potential Hg condensation when the produced fluid flows from the reservoir through flow lines and passes through process equipment. Commercial compositional reservoir, process and flow simulators employ models with different levels of complexity. It is desirable to be able to make consistent simulations across various simulation platforms using the same equation of state models and model parameters.
In this work we present self-contained sets of parameters for use with the original formulations of the Peng-Robinson modification from 1978 and the Soave-Redlich-Kwong equations of state. We aim at using the lowest possible level of complexity of binary interaction parameters. We further give the acentric factors for the original Peng-Robinson equations of state from 1976 giving the same results as when using the Peng-Robinson modification from 1978. The model covers various hydrocarbon components and inorganic gases, H2O, and common hydrate inhibitors. The work is based upon and ties together the experimental and modelling work of others and supplemented with new model parameters where required. We further summarize the accuracy of the model and briefly touch upon how the model extrapolates beyond the limits of data used in this work.
Thermodynamic Modelling on Wellbore Cement Integrity During Underground Hydrogen Storage in Depleted Gas Reservoirs
Authors: Zeng Lingping , Sarmadivaleh Mohammad , Saeedi Ali , Al-Yaseri Ahmed , Dowling Claire , Buick Glen , Xie Quan 
Published: October 2022

Abstract

Objectives/Scope
Underground hydrogen storage (UHS) has been raising more interest to safely and cost-effectively store hydrogen at large-scale to help the transition from fossil fuel to sustainable energy and to achieve net-zero emission target. During hydrogen subsurface storage particularly in depleted gas reservoirs, the wellbore plays an important role in injection and reproduction to meet seasonal energy demand. However, it is still unclear how wellbore cement would react with stored hydrogen in the presence of formation brine, which may effect long-term cement integrity. We thus performed thermodynamic modelling on cement reactions with hydrogen and water at reservoirs conditions.

Methods, Procedures, Process
The dissolution of individual components of cement including C3S, C2S, C3A, C4AF and gypsum of Class G/H, and potential precipitation of twenty secondary minerals were simulated at an infinite time scale at reservoir temperature and pressure (representing the worst case scenario of cement degradation from geochemical perspective; in real case, the degree of cement degradation would be much less than the results from thermodynamic modelling as it is a time-dependent process). The extent of cement mineral reactions with hydrogen was compared with that of methane and carbon dioxide to assess the wellbore cement integrity during UHS compared to UGS and CCS.

Results, Observations, Conclusions
The cement hydration process would lead to the transformation of the major cement compositions C3S and C2S to C1.5SH (CSH) and portlandite. Adding hydrogen would only slightly change the percentage of C1.5SH and portlandite and generate a small fraction of new mineral mackinawite. As a comparison, adding methane would generate a considerable amount of calcite. When CO2 is involved, all CSH compounds would transform to calcite through the cement carbonation process. Overall, the compositional mineral phases of cement after cement hydration is more closed to the case involving H2 compared to CH4 and CO2, implying a relatively low risk of wellbore cement degradation during UHS.

Novel/Additive Information
Our work underlines the importance of incorporating geochemical modelling in hydrogen geo-storage evaluation when using existing old wells and new drilled wells.
Integration of Mineralogy, Petrophysics, Geochemistry and Geomechanics to Evaluate Unconventional Shale Resources
Authors: Hui Gang , Gu Fei , Chen Zhangxin 
Published: October 2022

Abstract
It is not entirely understood how related geological parameters vary during the thermal maturation and development of shale resources and controlling factors of shale productivity. Here, a detailed examination of mineralogy, geochemistry, petrophysics, and geomechanics-related data is conducted to explore the productivity of the Fox Creek, Alberta shale play. Experiments using X-Ray Diffraction, Tight Rock Analysis, Rock-Eval Pyrolysis, and Triaxial Compression are conducted to characterize the mineralogy, petrophysics, geochemistry, and geomechanics of the region under study. Multiple Linear Regression (MLR) is used to quantify the relationship between shale output productivity and reservoir input parameters. Using 300 core samples from 15 wells targeting the Duvernay shale, the key governing characteristics of shale potential were then examined. The Duvernay shale is dominated by quartz, clay, and calcite, according to X-Ray Diffraction measurements. Tight Rock Analysis indicates that the effective porosity of the Duvernay shale ranges from 1.56% to 6.11%, with an average value of 3.97 %, while the core permeability ranges from 0.25 to 345.5 nD, with an average value of 127.2nD. The total organic carbon (TOC) content ranged from 2.32 to 5.0 %, with an average of 3.86 %, according to Rock-Eval Pyrolysis testing. The majority of the Duvernay shale near the Fox Creek region (i.e., Fox Creek shale) was deposited in an oxygen-depleted maritime environment, whereas the Duvernay shale was in the gas generation window. The MLR technique determines the elements controlling shale productivity, including the production index, gas saturation, clay content, porosity, total organic carbon, brittleness index, and brittle mineral content as input parameters in decreasing order. Based on the MLR prediction model, the expected 12-month shale gas production per stage corresponds well with the actual value. This strategy can guide the future selection of horizontal well drilling sites and lead to the efficient and profitable development of shale resources.