bluuebunny/crossref_metadata_2025 huggingface dataset:
Designing Interactive Electronic Module with Collaborative Team Work in Physics Learning
Authors: Anggita Gigih , Fatmaryanti Siska Desy , Ashari Ashari , Kurniawan Eko Setyadi
Published: October 2023

This study aims to determine the validity, practicality and effectiveness of interactive electronic modules (e-modules) with collaborative teamwork for physics learning. Design e-modules using the Flip PDF Professional application.This development uses the ADDIE development design (Analysis, Design, Development, Implementation and Evaluation). This research was conducted at senior high school in Purworejo. The test subjects were limited to class X2 with 5 students and a wide trial with 71 students in class X1 class X2. The research instruments used were validation sheets, collaboration skills questionnaires, learning module implementation sheets, collaboration skills observation sheets and student response questionnaires. Study data analysis techniques through validity test, and N-gain. The results of the study obtained: 1) material validation by expert validators obtained an average score of 3.72 in the "very good" category media experts obtained an average score of 3.63 in the "very good" category, so that it was declared very good. 2) the practicality of the media seen from the responses of the students obtained an average percentage of 93.7% in the "very practical" category. 3) the effectiveness of the e-module is seen from the increase in the results of the pre and post collaboration skills questionnaire, namely obtaining an N-gain of 0.68 in the "medium" category. For this reason, the development of interactive e-module with Collaborative Teamwork Learning for physics learning meets valid, practical and effective criteria, to improve students' collaboration skills in Class X senior high school.
КОМПЛЕКСНАЯ ОЦЕНКА ГЕНЕТИЧЕСКИХ РЕСУРСОВ ГОРОХА НА ОСНОВЕ КЛАСТЕРНОГО АНАЛИЗА
Authors: Ошергина Ирина , Тен Евгений
Published: October 2023

Зернобобовые культуры богаты белком, в следствии чего являются важным компонентом растениеводческого биоразнообразия и продовольственной безопасности. Обеспечение населения страны продовольствием – главная задача аграрного производства. Целью настоящего исследования было изучение генетического разнообразия сортов гороха и определения степени генетического расхождения между коллекционными образцами. Изучено 37 генотипов гороха усатого морфотипа, различного эколого-географического происхождения. Исследования проводили на полях селекционного питомника Научно-производственном центре зернового хозяйства имени А.И. Бараева. Кластерный анализ — это процедура группировки объектов исследования по определённому набору данных. Наблюдения проводились по 12 количественным признакам, а именно: вегетационный период от всходов до цветения, сут.; от всходов до созревания, сут.; урожайность, г/м2; число междоузлий, шт.; число продуктивных узлов, шт.; высота растения, см.; высота прикрепления нижнего боба, см.; число бобов на растении, шт.; число семян в бобе, шт.; число семян с растения, шт.; масса семян с растения, г.; масса 1000 семян, г., с помощью анализа основных компонентов и кластерного анализа для определения родства и генетического расхождения между особями. В результате кластерного анализа сгруппировали 37 образцов зародышевой плазмы гороха в два основных кластер и пять подгрупп, при этом минимальное количество образцов было обнаружено во втором кластере, в группе 3В (1 шт.), а максимальное количество было обнаружено в группе 1В (13 шт.). Полученные результаты показали, что среди двух кластеров отдельный генотип в группе 2С имеет наивысшее среднее значение практически по всем анализируемым признакам, кроме числа семян в бобе. Для селекционных программ образцы 2-го кластера, выделившихся по основным хозяйственно-ценным признакам представляют наибольший интерес и могут быть использованы в качестве родительских форм при гибридизации.
Algılanan COVID-19 Tehdidinin Hekimlerin Psikolojik Kırılganlıklarına Etkisi
Authors: KAPLAN Ahmet , YAĞCI Melike , TUNA Hasan
Published: October 2023

Pandemi dönemlerinde sağlık çalışanları ruhsal sağlık problemleri ile yüzleşmektedir. Bu kapsamda araştırma, pandemi sürecindeki COVID-19 salgını tehdidinin hekimlerin psikolojik kırılganlık düzeylerine olan etkilerini incelemek amacıyla tanımlayıcı ve ilişki arayıcı tipte planlanmıştır. Araştırmanın örneklemini uygun örnekleme yoluyla seçilen 235 hekim oluşturmuştur. Veri toplama aracı olarak “Psikolojik Kırılganlık Ölçeği” ve “Algılanan COVID-19 Tehdidi Ölçeği” kullanılmıştır. Verilerin analizinde bağımsız gruplar t testi, One-Way ANOVA testi, Pearson momentler çarpım korelasyon ve çoklu doğrusal regresyon analizleri kullanılmıştır. Yapılan korelasyon analizi sonucunda Pandemi sürecindeki hekimlerin algıladıkları COVID-19 tehdidi ile psikolojik kırılganlıkları arasında pozitif yönlü anlamlı bir ilişki tespit edilmiştir.
Implementation of the San Remo Manual as a Strategy for the Rule of War in the Indonesian Marine Territory
Authors: KAMARULAH Rizki Pratama , PRAKOSO Lukman Yudho
Published: October 2023

In 1994, a regulation on sea warfare was made, which could be used by countries conducting sea wars. This regulation is called the San Remo Manual, with changes to make various adjustments related to the conduct of war at sea. Indonesia is in an important strategic area both in the sea and air zones, this makes Indonesia a strategic area both regionally and globally. The purpose of this research is to provide practical guidelines for countries in applying international law that applies in times of armed conflict at sea and to find out how the law is applied in Indonesia. This study uses a qualitative method. Qualitative research tries to identify various phenomena ideographically. The theory of development and development can be formed empirically through various phenomena or cases studied. the result of this is to become a guideline for countries in conducting wars at sea, armed conflicts at sea, parties involved in the conflict, actions that are permitted and which are not permitted during conflicts, protection of injured ships and people who are injured or captured, as well as actions taken can be taken by countries outside the conflict.
Community Participation in Indonesia in Preservation and Continuation of Environmental Protection and Management
Authors: SILAM Achmad Adi Surya Guntur , KRISTHY Mutia Evi , SIBOT Yesieari Silvanny , HALIM Suriansyah
Published: October 2023

The concept of sustainable development, as discussed at the United Nations Conference on the Environment in Stockholm in 1972, focuses on development that considers environmental impacts. It highlights the constitutional mandate in Article 28H of the 1945 Constitution of the Republic of Indonesia, emphasizing the right of every Indonesian citizen to a good and healthy living environment. Despite this constitutional provision, implementing sustainable development has faced challenges and confusion at the policy and regulatory levels. In Indonesia, where forest and land fires are recurrent disasters with severe ecological, economic, and social consequences, the aims underscore the significance of environmental awareness and proactive measures in addressing these issues. It emphasizes the interdependence between human actions and the environment and calls for responsible environmental stewardship. The research method used is legal research, which departs from statutory provisions, namely research on the legal principles of environmental provisions, specifically regarding community participation in environmental management. Overall, this provides insights into the critical role of environmental awareness and sustainable development in ensuring a better future for Indonesia's environment and its citizens, in alignment with constitutional mandates and international principles.
Európai iszlamisták és dzsihádisták motivációi
Authors: Póczik Szilveszter
Published: October 2023

Aim: The study presents the process of Islamist radicalization, and outlines a dichotomous social psychological model based on the push and pull factors of Islamist radicalization.Methodology: After a critical review of the international literature, it formulates new aspects for subsequent research.Findings: Identification with radicalism is based on three basic motives: a) personality structure that reflects sensitively on social injustices and prefers radical solutions; b) the moral panic due to the negative experiences of young Muslims in the countries of the Euro-Atlantic world, and finally c) the political and attitude towards the foreign policy of the (collective) West. At the current level of our social development, the social-economic and legal system based on Christian foundation are in irreconcilable contradiction with the social and legal interpretation imported from the Islamic world. Therefore, the separation of Muslim communities will continue for a long time and remains a source of heavy social conflicts. In the longer term, Hungary also have to reckon with the gradual expansion of the Islamic community and the emergence of Islamist radicalism.Value: Based on the research by Mihály Csíkszentmihályi onto the flow experience, present study introduces a new approach to understanding the radicalization.
Tiltott adatszerzés és az információs rendszer elleni bűncselekmények sajátosságai Magyarországon 2013–2021 között
Authors: Deres Petronella
Published: October 2023

Aim: The aim of the study is to present the results of the research carried out by the National Institute of Criminology on the implementation of the Criminal Code. Chapter XLIII of the Criminal Procedure Code was conducted by the National Institute of Criminology.Methodology: The study was conducted using the methodology of data collection, data analysis, criminal file analysis.Findings: The domestic regulatory environment adequately covers a wide range of cyber-attacks. Hungarian characteristics can be seen in the broader perspective of current international and European developments in cyber security and cybercrime. The data show a steady but not uniform increase in the number of reports of such crimes, as more and more people use various information systems in their daily lives, while neglecting, in whole or in part, measures to ensure their safe use. The conclusion of the national survey is that there are several types of offences which are basically well defined. It may be a challenge for law enforcement to keep track of new types of offences and to classify individual offences.Value: Conclusions and recommendations on the specifics of the offences covered by Chapter XLIII of the BPC; the (new) Criminal Code since its entry into force, there has been no research of this scope and content on the topic, including criminal document analysis, in Hungary.
A kapcsolati erőszak bűncselekmény tényállásának 10. születésnapjára
Authors: Garai Renáta
Published: October 2023

Although it was possible to sanction acts falling within the conceptual scope of domestic violence earlier as well, from 1 July 2013, the Hungarian Criminal Code contains an independent criminal offense covering a wide range of abusive behaviours committed against family members. This article presents the essence of the regulation, the statistical data of the last ten years, as well as the difficulties and best practices that we can encounter when analysing the application of the law.Aim: The first summary of the judicial practice of the criminal offense of domestic violence.Methodology: The research methodology behind the study consisted of criminal-statistical and legislative analysis, round tables, focus groups, in-depth interviews and case file reviews.Findings: A number of to-dos are being formulated for the future, including conducting a follow-up analysis, establishing uniform legal practice, popularizing the relevant instruction of the chief of police, increasing the responsibility of the child protection alert system, organizing targeted trainings, strengthening professional collaborations and providing information for victims, inspiring the imposition of more severe punishments, and a change in communication directions.Value: The analysis of the first ten years of the criminal offense from many aspects helps to draw conclusions and find the directions to follow.
A szakértői bizonyítás hatékonyságának növelése – egy empirikus kutatás nyomán
Authors: Kármán Gabriella
Published: October 2023

Aim: The issue of expert evidence in the context of the efficiency of criminal procedures is less discussed in the literature, while the prevalence and importance of expert involvement in proceedings is undoubted, its cost and time requirements are notoriously critical. The aim of the study is to provide an overview of the factors influencing the efficiency of expert evidence, in close connection with the requirement of factual accuracy of the evidence. In order to support my viewpoint, I will present the most important results of the empirical research conducted at the National Institute of Criminology on the experiences of law enforcement between 2020 and 2022, in order to give new impetus to further research on the effectiveness of expert evidence.Methodology: The paper presents the literature, the regulatory solutions, and the rationale of the Criminal Procedure and Forensic Expert Act and provide an insight into the empirical research opportunities of efficiency based on the results of a study completed last year.Findings: In addition to time and cost factors, the results of expert evidence should be given greater weight among the efficiency requirements. An indicator of the effectiveness of an expert opinion is that it can be admitted into evidence without any concerns and used in establishing the facts, and thus relied upon in the judgment.Value: The study is based on an analysis of the criminal legislation and comprehensive empirical research of the experience of law enforcement of expert evidence, the like of which has not been seen in Hungary since the 1980s. The questionnaire survey was carried out in cooperation with the court, the prosecution and the investigating authorities and involved all departments throughout the country. The results of the survey also provide input for further research on the subject.
Vannak-e kriminogén foglalkozások?
Authors: Korinek László
Published: October 2023

Aim: The author discusses some problems of the relationship between occupations and crime, with particular reference to the literature on the subject.Methodology: Based on international literature and domestic statistics, the author reviews some issues of the relationship between occupations and crime. Issues related to problems of career criminals are also addressed.Findings: The Author comes to the conclusion that there is no simple causal link connecting them. Individual characteristics may influence the choice of a profession while circumstances of different jobs also have impact on the possibilities of and inclination to commit certain offences.Value: Finally, some recommendations to prevent and detect occupational crime are formulated.
Önbevallásos kérdezéstechnika a kriminológiai kutatásokban
Authors: Kó József
Published: October 2023

Aim: The aim of this article is to introduce the technique of self-report questioning, which is already accepted and widely used abroad, but is still little known and accepted in Hungary.Methodology: After a brief historical overview, the Author describes the application of the self-report questioning technique in criminological research.Findings: The presentation of the results so far convincingly demonstrates that, with the application of appropriate methodology, the self-report questioning produces reliable results in the collection of data on crime and criminality.Value: The research results show that, with the right methodological procedures, self-reported surveys can produce results that are just as valid as official crime statistics.
Ab Initio Study of Glycine Formation in the Condensed Phase: Carbon Monoxide, Formaldimine, and Water Are Enough
Authors: Carrascoza Francisco , Lukasiak Piotr , Nowak Wieslaw , Blazewicz Jacek
Published: October 2023

Glycine is considered to be crucial in the formation of proteins and prebiotic substances. Nevertheless, the mechanism of spontaneous glycine formation under prebiotic Earth conditions or within the interstellar medium (ISM) remains a topic of debate, given the changing geochemical environment over Earth’s history and the difficulty of detecting it within the ISM. Yet it is believed that its formation could be possible in interstellar water-rich ice. In this study, using molecular dynamics (MD) simulations at the ab initio level of theory enhanced with modern free energy calculations, we modeled the chemical reaction between carbon monoxide, formaldimine, and water to produce glycine. We estimated under what conditions, in condensed phase at 50, 70, 100, and 300 K, glycine is formed. We also explored the effect of different electric fields on this process. Our results show that glycine could be formed with energy barriers as low as 0.5 kcal mol−1 at 50 K. We discuss whether this reaction could be a suitable candidate for explaining the mechanism of glycine formation under conditions that resemble various astrophysical environments, such as planets, exoplanets, and Earth. This study is relevant to finding a consensus among various proposals for glycine formation. Moreover, it highlights the importance of metadynamics and Car–Parrinello MD methods as tools in finding unknown complex, multistep reaction mechanism pathways, possibly important to the astronomical phenomena.
Discovery and Timing of Millisecond Pulsars with the Arecibo 327 MHz Drift-scan Survey
Authors: Lewis Evan F. , Olszanski Timothy E. E. , Deneva Julia S. , Freire Paulo C. C. , McLaughlin Maura A. , Stovall Kevin , Bagchi Manjari , Martinez Jose G. , Perera Benetge B. P.
Published: October 2023

We present the discovery and timing solutions of four millisecond pulsars (MSPs) discovered in the Arecibo 327 MHz Drift-Scan Pulsar Survey. Three of these pulsars are in binary systems, consisting of a redback (PSR J2055+1545), a black widow (PSR J1630+3550), and a neutron star–white dwarf binary (PSR J2116+1345). The fourth MSP, PSR J2212+2450, is isolated. We present the multiyear timing solutions as well as polarization properties across a range of radio frequencies for each pulsar. We perform a multiwavelength search for emission from these systems and find an optical counterpart for PSR J2055+1545 in Gaia DR3, as well as a gamma-ray counterpart for PSR J2116+1345 with the Fermi-LAT telescope. Despite the close colocation of PSR J2055+1545 with a Fermi source, we are unable to detect gamma-ray pulsations, likely due to the large orbital variability of the system. This work presents the first two binaries found by this survey with orbital periods shorter than a day; we expect to find more in the 40% of the survey data that have yet to be searched.
Legume-cereal intercropping as a strategy of regenerative agriculture supporting reverse of biodiversity loss - relevance of microbiome-based research
Authors: Frąc Magdalena , Panek Jacek , Gryta Agata , Oszust Karolina , Pertile Giorgia , Siegieda Dominika , Mącik Mateusz , Pylak Michał , Imran Pathan Shamina , Pietramellara Giacomo
Published: October 2023

Adverse environmental impacts connceted with high chemicals and fertilizers use is one of the causes of biodiversity loss. Therefore, there is a need to looking for more natural and non-hazardous alternative approaches to make agriculture more sustain. The legume-cereal intercropping is currently one of the „hot topics” in the area of sustainable and regenerative agriculture. These intercropping practices are increasingly gaining attention as a way for enhancing soil ecosystem services and reversal biodiversity loss, as well as as a strategy of harnesing plant yield quality and soil health.

Legume-cereal systems are the most common intercropping combinations used in sustainable agriculture models because of their noncompeting niche requirements and atmospheric nitrogen fixation which improve a balance of this nutrient in soil and plant and decrease the amount of mineral fertilizers use. However, conventional crop rotations in the EU are largely dominated by cereals while legume cultivation has declined in recent years.

The idea of the LEGUMINOSE project includes that multi-species assemblages of plants deliver rhizosphere functions that are greater than the sum of the functions delivered by the rhizospheres of individual plants growing alone as a monoculture. We hypotheses that the higher plant diversity in intercropping will increase plant health, improve soil biodiversity and reduce the use of pesticides in agroecosystems. However ther is a knowledge gap concerning plant-soil-microbe interactions under root exudation from single and diverse plant assemblage and role of soil microbiomes in soil ecosystem functionality and plant production. Therefore we will focus on understanding these interactions by the microbiome research of soil and plant niches, including bulk soil, rhisozphere, roots and shoots of cereal and legume plants in order to assess the percentage of microbiota transfered between them within monocropping and intercropping fields and understand relationships of that microbiomes in plant health improvement. This project will design and implement sustainable environmental practices based on legume-cereal intercropping systems that account for the nature, impacting to global biogeosphere changes.

Research funded in the frame of Horizon Europe Programme, agreement no. Project 101082289 — LEGUMINOSE.
Discovery of the velvet ant genus Orientilla Lelej from Laos (Hymenoptera, Mutillidae, Dasylabrinae), with description of a related new species from India
Authors: Okayasu Juriya
Published: October 2023

The genus Orientilla Lelej, 1979 is newly recorded from Laos based on O. tamaderaisp. nov. (Xieng Khouang) and O. vietnamica Lelej, 1979 (Vientiane). One additional new species, O. nitenssp. nov., is described from India (Tamil Nadu). These three species share many diagnostic features within Orientilla, but they are distinguished by the body coloration and shape of clypeus, hypostomal carina, humeral carina, and metasomal terga 1–2. An identification key to females of the genus is provided.
Barrières et facilitateurs de l’utilisation des services de santé de la reproduction en Côte d’Ivoire : une étude qualitative auprès de la communauté
Authors: Agbré-Yacé Marie Laurette , Kourouma Kadidiatou Raïssa , Doukouré Daouda , Ndia Félix Anon , Kpébo Denise , Koumi-Mélèdje Marie Dorothée , Yaya Bocoum Fadima , Bousso Senghor Diarra , Aké-Tano Odile
Published: October 2023

Introduction : L’amélioration des indicateurs de santé reproductive, maternelle, néonatale, infantile et adolescente et de la nutrition (SRMNIA+N) représente un challenge pour les systèmes de santé, principalement ceux des pays d’Afrique subsaharienne. Cette étude avait pour objectif d’identifier les barrières et facilitateurs à l’utilisation des services de SRMNIA+N dans les zones à faibles indicateurs en Côte d’Ivoire. Méthodes : Une étude de cas par approche qualitative auprès de 76 bénéficiaires des services de SRMNIA+N a été menée en septembre 2021 dans les districts sanitaires de Boundiali, Toulepleu et Tanda. Des entretiens individuels et des discussions de groupe ( focus groups ) ont été organisés respectivement auprès des leaders communautaires, tradipraticiens ou matrones et des femmes enceintes ou en âge de procréer et des hommes ayant la charge d’un enfant de moins de 5 ans. Une analyse thématique a été réalisée après codage des données dans NVivo 12. Résultats : Les barrières à l’utilisation des services de SRMNIA+N étaient la non-disponibilité de certains équipements ou commodités, les soins irrespectueux dans certains services de SRMNIA+N, le manque d’autonomie financière et/ou décisionnelle des femmes et la présence de prestataires de sexe masculin. Les facilitateurs identifiés étaient : l’accessibilité géographique, l’implication des hommes dans la santé du couple mère/enfant, la sensibilisation de la population. Conclusion : L’amélioration de l’utilisation des services de SRMNIA+N nécessite la mise en œuvre d’interventions adressant ces barrières et facilitateurs tels que la sensibilisation de la communauté sur les services de SRMNIA+N, la promotion auprès des prestataires de santé des soins humanisés respectueux et centrés sur le patient.
Mesure de la charge virale VIH : connaissances, attitudes et pratiques des agents de santé, Burkina Faso
Authors: Ouédraogo Smaïla , Dahourou Désiré Lucien , Diallo Ismaël , Sarigda Maurice , Romba Issa , Yonli Bapougouni Philippe Christian , Dah Ter Elias , Kaboré Ahmed , Méda Nicolas
Published: October 2023

Introduction : Environ un quart des personnes vivant avec le virus de l’immunodéficience humaine (PVVIH) avait réalisé une charge virale plasmatique (CVP) en 2020 au Burkina Faso. Le but de cette étude était d’évaluer les connaissances, les attitudes et les pratiques (CAP) des agents de santé en matière de mesure de la CVP du VIH. Méthodes : Une étude transversale a été conduite auprès des agents de santé impliqués dans la prise en charge des PVVIH dans les 13 régions du Burkina Faso en 2021. Des scores ont été construits pour évaluer leurs CAP sur la mesure de la CVP. Les facteurs associés aux connaissances et pratiques ont été identifiés par une régression logistique. Résultats : Au total, 255 agents de santé ont été inclus dans l’étude. La majorité avait de bonnes connaissances (73 %) et des attitudes favorables (93 %). Cependant, 40 % avaient des pratiques inadéquates. Tenant compte de la disponibilité d’un laboratoire de réalisation de la CVP au sein du centre de santé, occuper un rôle de coordonnateur augmentait la probabilité d’avoir de bonnes connaissances, tandis que ne pas avoir une qualification médicale réduisait cette probabilité. Les bonnes pratiques étaient plus courantes chez les agents santé travaillant au deuxième niveau de la pyramide sanitaire. Conclusions : Des interventions pour accroître la réalisation de la CVP sont indispensables pour améliorer la prise en charge des PVVIH. Par exemple, des investigations futures pourraient étudier le rôle des médiateurs dans l’accroissement de la demande de la CVP auprès des PVIHH et de leur soignant.
Agronomic performance, yield stability and selection of doubled haploid rice lines in advanced yield trials
Authors: Hadianto Wira , Purwoko Bambang Sapta , Dewi Iswari Saraswati , Suwarno Willy Bayuardi , Hidayat Purnama , Lubis Iskandar
Published: October 2023

Anther culture is a widely utilized technique in rice breeding because of its simplicity and effectiveness in rapidly obtaining pure lines in the form of doubled haploid plants. The selection of doubled haploid (DH) rice lines derived from anther culture in advanced yield trials is an important step for obtaining superior DH lines. We aimed to determine agronomic performance, including yield and yield stability in order to select lowland DH rice lines that are high yield and have good agronomic performance based on the selection index method. The research was conducted in Indonesia at three locations, i.e., Bogor (West Java), Indramayu (West Java) and Malang (East Java) from July to December 2022. The genotypes tested were 29 DH lines and three check varieties (Inpari-42 Agritan GSR, Inpari-18 Agritan and Bioni63 Ciherang Agritan) using a randomized complete block design (RCBD) with genotypes as a single factor and three replications. High heritability values are found in all agronomic characters, except the percentage of filled grain/panicle, the percentage of empty grain/panicle and productivity. The yield stability based on the Kang method showed that 15 lines were stable and had high productivity. Phenotypic correlation analysis showed that the number of productive tillers, days to flowering, days to harvesting, number of filled grains/panicle and percentage of filled grains all had positive values and significantly correlated with productivity. Phenotypic path analysis showed that the character of days to harvesting, number of filled grains/panicle, number of productive tillers and percentage of filled grains/panicle directly affected the productivity. Based on the weighted selection index, 12 DH lines were selected due to having a positive and higher index (8.54 to 0.28) than the Bioni63 Agritan and Inpari 18 check varieties. Among those lines, 9 DH lines were also stable based on the Kang Method.
On the contribution of qualitative analysis in mathematical modeling of plasmid-mediated ceftiofur resistance
Authors: Ibargüen-Mondragón Eduardo , Victoria Otero-Espinar M. , Gómez Miller Cerón
Published: October 2023

The acquisition of antibiotic resistance due to the consumption of food contaminated with resistant strains is a public health problem that has been increasing in the last decades. Mathematical modeling is contributing to the solution of this problem. In this article we performed the qualitative analysis of a mathematical model that explores the competition dynamics in vivo of ceftiofur-resistant and sensitive commensal enteric Escherichia coli (E. coli) in the absence and during parenteral ceftiofur therapy within the gut of cattle, considering the therapeutic effects (pharmacokinetics (PK)/pharmacodynamics (PD)) in the outcome of infection. Through this analysis, empirical properties obtained through in vivo experimentation were verified, and it also evidenced other properties of bacterial dynamics that had not been previously shown. In addition, the impact of PD and PK has been evaluated.
New approach to $ \lambda $-Stirling numbers
Authors: Kim Dae San , Kim Hye Kyung , Kim Taekyun
Published: October 2023

The aim of this paper is to study the $ \lambda $-Stirling numbers of both kinds, which are $ \lambda $-analogues of Stirling numbers of both kinds. These numbers have nice combinatorial interpretations when $ \lambda $ are positive integers. If $ \lambda = 1 $, then the $ \lambda $-Stirling numbers of both kinds reduce to the Stirling numbers of both kinds. We derive new types of generating functions of the $ \lambda $-Stirling numbers of both kinds which are related to the reciprocals of the generalized rising factorials. Furthermore, some related identities are also derived from those generating functions. In addition, all the corresponding results to the $ \lambda $-Stirling numbers of both kinds are obtained for the $ \lambda $-analogues of $ r $-Stirling numbers of both kinds, which are generalizations of those numbers.
Los indicios auríferos sobre la Fm Vegadeo en el corredor Navelgas-Trevías (Zona Asturoccidental-Leonesa)
Authors: González Nistal Santiago , Ordóñez Alonso Almudena , García Ordiales Efrén , Alberquilla Martínez Fernando , Alvarez García Rodrigo
Published: October 2023

En este trabajo se presentan algunos resultados de interés práctico sobre las mineralizaciones de oro que aparecen en el sector norte del cinturón aurífero de Navelgas (Zona Asturoccidental-Leonesa). El indicio de Navelgas, el más importante del área de estudio, presenta una mineralización hidrotermal cuya paragénesis se ha completado con la presencia de arsenopirita, lollingita, Bi nativo, bismutinita, gersdorfita, violarita, monacita y parisita. El oro nativo, escaso, se asocia a pirita y asenopirita. La primera, mayoritaria, contiene 625 mg·kg-1 de oro refractario invisible. El microanálisis de elementos traza en oro aluvionar indica que en la cuenca alta del río Navelgas existen varios indicios, no conocidos, de oro primario, probablemente asociados a filones de cuarzo.
En el área de San Feliz, unos 12 km al NE de Navelgas, se ha identificado la presencia de oro refractario (727 mg·kg-1) en la goethita (pseudomorfa de pirita) de los eluviones que se desarrollan sobre la Fm Vegadeo, lo que parece indicar la posible existencia de zonas profundas mineralizadas.
En el área de San Feliz, unos 12 km al NE de Navelgas, se ha identificado la presencia de oro refractario (727 mg·kg-1) en la goethita (pseudomorfa de pirita) de los eluviones que se desarrollan sobre la Fm Vegadeo, lo que parece indicar la posible existencia de zonas profundas mineralizadas.
Le prix de l’eau à Bruxelles ne respecte pas le principe du pollueur-payeur
Authors: May Xavier
Published: October 2023

L’ordonnance Cadre Eau impose le cout-vérité de l’eau conformément au principe du pollueur-payeur. En pratique, les consommateurs d’eau – domestiques et non domestiques – bruxellois sont les principaux contributeurs au financement de la lutte contre les inondations, de la collecte et de l’épuration des eaux présentes dans le réseau unitaire d’égouts bruxellois. Cependant, environ la moitié des eaux résiduaires sont des eaux de pluie et des eaux claires parasites qui ne sont pas liées à la consommation d’eau. Les consommateurs ne devraient donc pas être mis à contribution pour les couts qu’elles engendrent en vertu du principe du pollueur-payeur. Nous estimons que 20 % de la facture d’eau des consommateurs est indument à leur charge et examinons comment ces montants pourraient être financés autrement.
Application of Embedded Digital Twin to Increase the Fault-Tolerance of Electric Subsea Valve Actuators
Authors: Duarte da Silva Joao Pedro , Alexandre Orth , Markus Kubacki , Prudente da Silva Guilherme , Juliano De Negri Victor
Published: October 2023

The digitalization of production and processing systems has significant potential to greatly benefit the Oil & Gas industry, as well as for Carbon Capture Utilization and Storage (CCUS) and for green hydrogen (H2) production using offshore renewable energy. Digital Twins, in particular, play a critical role in not only designing new applications but also enhancing existing machinery. This integration of advanced technologies empowers the industry to achieve unprecedented levels of efficiency, controllability, and predictive maintenance, ensuring a more competitive and sustainable future.

This paper focuses on developing an embedded Digital Twin for an electric subsea valve actuator, which was modeled using state-space equations based on its physical counterpart's components. Its state-space matrices are continually updated through controller output signals and recalculating system parameters, including mechanical and volumetric efficiencies and the production valve signature, based on data from sensors. To achieve continuous updates, an online and recursive system identification technique employing a Kalman Filter is used to update the Digital Twin's parameters.

Throughout the experiment, a MATLAB script subjected the Digital Twin model to tests utilizing data from the physical counterpart. Both scenarios, with and without online and recursive parameter identification, were explored. Remarkably, the Digital Twin adeptly adapted its parameters, mirroring the behavior of its physical counterpart. The findings conclusively exhibited that the embedded Digital Twin enables condition monitoring of the physical counterpart, bridging sensor gaps and compensating for sensor faults. Such proactive maintenance capabilities enhance equipment reliability significantly. This feature is used in this study to increase the fault-tolerance of an electric Subsea Valve Actuator, providing a digital redundancy to critical components such as position and torque sensors.
Monitoring and Diagnostic System for Dry-Type Transformers Using Machine Learning Techniques
Authors: Martins F. G. R. , Lopes Y. , França B. W. , Ferreira V. H. , Sotelo G. G. , Augusto A. A. , Colombini A. C. , Pinho A. C. , Mello M. , Costa M. C. , Nogueira C. S. C. , Silva N. da , Melo A. , Soares A. , Fernandes D.
Published: October 2023

Power transformers are recognized as high-value assets in substation design, but their susceptibility to various failure modes poses a significant risk of damage and power supply disruptions. Consequently, extensive research has been conducted to develop diagnostic techniques and monitoring methodologies for these devices. This project aims to develop a comprehensive solution comprising hardware and software components for the online diagnosis of dry-type transformers, primarily focusing on the detection of Inter-Turn Short Circuits (ITSC) in conjunction with Partial Discharge (PD) signatures.

Dry-type transformers utilize ambient air as both a cooling and insulating medium. Among its advantages, the most relevant for the oil and gas industry are the lower maintenance costs and the absence of flammable oil, ensuring lower fire risks, which is a critical factor in facilities. As offshore electrical plants grow in complexity, there is an increasing demand for dry-type transformers with higher power ratings. Effectively monitoring the operational condition of such transformers serves as a strategic tool to enhance the reliability, robustness and safety of the electrical system, while potentially reducing overall maintenance expenditures.

Such transformers offer notable advantages in terms of safety and reliability [1]. However, they come with higher costs and have lower power and voltage limits. Similar to any other equipment, transformers experience aging as a natural consequence of their operation. Its most significant consequence is the gradual degradation of insulation due to thermal effects and mechanical stresses resulting from electromagnetic interactions between windings turns. Additionally, transformers are susceptible to short-circuits, which induce intense electromechanical stresses in the windings, as well as overvoltages stemming from maneuvers such as line energization or the presence of inductive or capacitive loads. These factors elevate the dielectric stress on insulating materials and connections, potentially surpassing their design limits.
Extracting Textural Parameters from Image Logs to Enhance Reservoir Rock Typing in Diagenetic Controlled Siliciclastic Reservoir
Authors: Aguilar C. , Salazar F. , Jimenez J.
Published: October 2023

Image logs are appreciated by the geoscientists community due to they recognize important geological features such as sedimentological structures and structural patterns leading to enhance reservoir descriptions. Nevertheless, their quantitative use for petrophysical purposes may be underestimated. Incorporating high resolution information is vital for reservoir description whether depositional environment causes high heterogeneity, diagenetic process, and thin reservoir layers (reducing vertical permeability and acting as flow barriers reducing vertical sweep efficiency). Usually, thin sand layers are under conventional logs vertical resolution therefore they are not able to capture reservoir properties. On the other hand, cores offer direct high-resolution information, but they are expensive and only a limited number of samples are available. In this context, it is a crucial step to relate geological and petrophysical features (i.e.: sedimentary facies, lithology, permeability measurements…) from core to log domain using appropriate machine learning algorithms for clustering analysis.

In this paper, an automated high-resolution classification process based on textural parameters extracted from microresistivity image logs was successfully performed. Machine learning (ML) algorithm chosen to recognize and order texture was MRGC (Ye, et al., 2000; Rabiller, et al., 2001). Textural model is defined by first and second order moments of image. Due to its high resolution, microresistivity borehole imaging provides valuable information involving grain size, sorting and porosity distribution. Moreover, in laminated reservoir zones with diagenetic complexity, where conventional logs overlooked some thin prospective intervals, this approach revealed reservoir characteristic that directly impacts on reservoir management decisions. As a result of the application of this approach, improved spatial resolution of the rock type classification yielding a more detailed and comprehensive characterization of the reservoir and enhancing geocellular model. Thus, this approach has the potential to locate bypassed oil, maximize oil recovery reserves, minimize risks and thereby saving significant costs.
Controlled Removal of Sun Coral in Drilling Units Hull
Authors: Brancaccio G. R. , Lagraf D. , Pimentel L. O.
Published: October 2023

Biological invasion (bioinvasion) is a major socio-environmental threat that impacts biodiversity, due to the ease of dispersal and competitive advantage, and also impact the surrounding population and activities such as fishing and tourism. The sun coral is one of the marine bioinvasive species in Brazil and its control and monitoring requires constant cleaning of the hulls of ships and semi-submersibles used by oil and gas drilling companies.

While the call for hull cleaning is not new, in the last two years, new rules and standards have been introduced in Brazil for cleaning specifically directed at exotic species. In addition, many hull cleaning technologies are known but not yet applicable to the removal of sun coral from hulls.

As a result, the removal of its biofouling is now one of the main challenges of drilling contractors working in Brazil. The call for the removal of sun coral from hulls is growing every day, and since the cleaning operation is costly and time-consuming, it has received considerable attention and has been the subject of studies to optimize it. Cleaning a hull involves the utilization of diving teams, in a manual and high-risky activity, for the lack of other applicable technology. In this sense, the objective of this paper is to present a bibliographic review on the subject, and to present a case study of the hull cleaning activity of four offshore drilling rigs for the controlled removal of fouling biota by sun coral.

This paper is based on a case study of the controlled removal of sun coral using diving teams, from four (4) drilling units, three (3) semi-submersible and one (1) drillship, performed in 2022 in Guanabara Bay, Rio de Janeiro. The data analyzed were live area worked, duration of the cleaning operation, number of teams, average number of teams per day, and area worked per day.

The acquired data may be useful for planning future maneuvers for the removal of exotic species, as well as the cleaning of biofouling from the living works of offshore drilling units, as it presents comparable data and similar activities.
Lessons Learned from Constructing Atlanta Field Wells: A Milestone in the Deepwater Offshore Oil Industry
Authors: Pedroso C. A.
Published: October 2023

The successful commercial exploitation of the Atlanta field, the world's first ultra-deepwater heavy oil project, is a milestone in the offshore industry. The technological solutions and innovations applied so far, allowed the Early Production System (EPS), which at first would be a big prototype for studying technical solutions and understanding the behavior of the reservoir and aquifer, to become a standalone project. With this, the EPS was extended, and a fourth well was added to the initial 3-well design.

The success of production, which has already accumulated 25 million barrels of oil produced, confirmed the performance of the large aquifer, simplifying and reducing project costs, but has caused significant dynamic depletion in the vicinity of producing wells. Currently, the powerful ESP into the producer wells apply a drawdown of approximately 120 bar, certainly one of the highest in the world. The robustness and correct design of the sand control used in the wells has allowed this operation.

This depletion added additional challenges to the construction of the 4th, 5th and 6th wells and an even narrower operating window was expected. To deal with these uncertainties, the drilling operations included a new determination of the geomechanical properties of the reservoir. Also, the OHHGP with AICD used 3 different proppants, with density of 2.71g/cm3, 1.34g/cm3 and 1.08 g/cm3, the latter being the first use in OHHGP. Also 3 fluids were used in the OHHGP

Lessons learned and the innovations that allowed the construction of the 4th EPS well, such as this pioneer OHGP operation, are depicted in this paper.
Digital Twin of Subsea Assets as a Tool for Integrity Management and Risk-Based Inspection: Challenges and Perspectives
Authors: Rodrigues S. S. , Braga J. O. , Xavier J. M. , Pauli G. , Mata A. M. , Margotti E. , Demay M. B. , Donatelli G. D.
Published: October 2023

Based on the current applications in the oil and gas industry, this paper approaches the main challenges in the development of a Digital Twin for subsea production system assets. Bibliographical research was carried out to select relevant digital twin solutions developed in the different sectors of the oil and gas industry, in order to identify the main challenges, risks and prospects for implementing this type of technology. Furthermore, this manuscript also provides solutions developed by the authors based on the experiences in research, development and innovation of national projects for digital transformation. These solutions contemplate data analysis, connections with databases, definitions of recurrent degradation models in the oil and gas industry. A digital twin can be defined as the digital representation of a system or asset, which calculates states and provides relevant information through integrated models and data, to support decisions throughout the life cycle. In the upstream, whose main activities involve the exploration and production of oil and gas, digital twin can be used as a tool for asset integrity management in the production system and associated with integrity management methodologies such as Risk Based Inspection (RBI). The implementation of a digital twin is a complex task and has several challenges, since it is composed of many models and data that need to be interconnected. However, it is common for data from different sources to be stored on different systems. Another relevant challenge concerns the models associated with digital twins, which are sources of uncertainties. The lack of consistent models and coordination between current physical and virtual models, complex data validation, collection and processing challenges are obstacles in implementing a digital twin. If well implemented, the digital twin can help in the decision-making process related to asset integrity management by following the asset throughout its life cycle. In an RBI approach, it can reduce the OPEX cost of subsea systems. This paper will approach the stages of the development of a digital twin for subsea production systems assets and the main challenges based on recent studies carried out in the oil and gas industry such as the requirement for transparency in data exchange while maintaining security and confidentiality, data-model assimilation, uncertainty and validation of models. In addition, it will be presented the experience acquired by the authors in the development of solutions for integrity management.