bluuebunny/crossref_metadata_2025 huggingface dataset:
Advanced modelling techniques for anomaly detection: A proactive approach to database breach mitigation
Authors: Chinedu Jude Nzekwe  , Christopher J Ozurumba
Published: December 2024

The increasing sophistication of cyber threats necessitates advanced approaches to database protection, with anomaly detection emerging as a cornerstone of modern cybersecurity strategies. This paper delves into cutting-edge modelling techniques, such as neural networks and Bayesian inference, for identifying anomalies in database environments. These techniques enhance the detection of malicious activities, including SQL injection attacks, unauthorized access, and data exfiltration attempts, which traditional rule-based systems often fail to capture. Neural networks, with their ability to analyse complex patterns in large datasets, enable the identification of subtle deviations indicative of potential threats. Coupled with Bayesian inference, which calculates the probability of anomalous events based on prior knowledge, these techniques provide a robust framework for detecting irregularities in real-time. Together, they offer superior performance in distinguishing genuine threats from benign anomalies, reducing false positives and improving response times. This study also explores the synergy between advanced anomaly detection methods and existing database protection measures, such as encryption and access control. By integrating these techniques into real-time monitoring systems, organizations can create comprehensive security architectures capable of adapting to evolving threats. Case studies from industries such as finance, healthcare, and e-commerce illustrate the practical benefits of this approach, showcasing enhanced breach mitigation and minimized data loss. The paper concludes by emphasizing the necessity of adopting proactive, analytics-driven solutions in database security. Advanced modelling techniques not only improve threat detection and response capabilities but also strengthen the overall resilience of database systems in an increasingly complex cyber landscape.
Smart electronics in solar-powered grid systems for enhanced renewable energy efficiency and reliability
Authors: Michael Ibukun Kolawole  , Busayo Leah Ayodele
Published: December 2024

Harnessing solar energy for grid electricity management has become a global imperative in the pursuit of sustainable energy solutions. Advanced electronics, including smart inverters, IoT-enabled sensors, and intelligent monitoring systems, are revolutionizing how solar energy is integrated into power grids. These technologies enable efficient energy storage, dynamic load balancing, and seamless distribution, addressing the variability of solar power and ensuring grid stability. By adopting innovative strategies, solar energy integration enhances overall grid efficiency, minimizes energy losses, and supports the scalability of renewable energy systems worldwide. This paper provides a global perspective on advanced approaches to solar energy integration within modern grids, highlighting the transformative role of cutting-edge electronics. Key innovations, such as real-time energy routing, intelligent demand forecasting, and Maximum Power Point Tracking (MPPT), are explored for their ability to optimize energy capture and consumption. The study also emphasizes the importance of hybrid energy storage systems, including next-generation lithium-ion and solid-state batteries, in stabilizing grid performance and ensuring resilience against disruptions. Despite these advancements, challenges such as high implementation costs, cybersecurity vulnerabilities, and interoperability issues persist. The paper proposes globally-oriented solutions, including international policy frameworks, cross-sector partnerships, and increased investments in research and development, to drive adoption. By aligning technological innovation with collaborative action, integrating solar energy into grid management systems can accelerate the global transition to a reliable, efficient, and sustainable energy future.
Advancing lean construction through Artificial Intelligence: Enhancing efficiency and sustainability in project management
Authors: Rasheed O. Ajirotutu  , Baalah Matthew Patrick Garba  , Johnson Segun Olu
Published: December 2024

This study explores the transformative potential of artificial intelligence (AI) within the lean construction framework, addressing the pressing need for enhanced efficiency, sustainability, and innovation in the construction industry. Lean construction principles, which emphasize waste minimization and value maximization, align seamlessly with AI’s capabilities, offering a paradigm shift in project management. The research employs a comprehensive review of contemporary literature, analyzing key applications of AI in optimizing resource utilization, streamlining workflows, and fostering sustainability through renewable energy integration and environmental impact reduction.
The findings reveal that AI-driven tools significantly enhance project efficiency by automating repetitive tasks, facilitating predictive analytics, and enabling real-time data-driven decision-making. AI also promotes collaboration and transparency among stakeholders through secure digital platforms, while supporting sustainability goals through material optimization and energy-efficient processes. However, critical barriers to AI adoption persist, including economic constraints, data security challenges, and the absence of standardized regulatory frameworks.
The study concludes that AI represents a pivotal driver for advancing lean construction, with its integration promising unprecedented improvements in efficiency and sustainability. To overcome the challenges identified, the study recommends the establishment of robust regulatory policies, investment in workforce training to enhance AI competency, and sustained research and development to address technical and economic hurdles. These measures are essential to ensuring that the construction industry fully harnesses the potential of AI, paving the way for a future characterized by collaborative, efficient, and sustainable practices.
This research contributes valuable insights to the ongoing discourse on AI in lean construction, serving as a foundation for further exploration and practical implementation.
Securing Chat applications: Strategies for end-to-end encryption and cloud data protection
Authors: Kiran Kumar Nalla
Published: December 2024

Protecting chat applications is crucial since such apps define how people and organizations interact in real time. Third parties must prevent eavesdropping or message tampering when using sensitive conversations, from normal day conversations to business deals. The most precise and universal approach is end-to-end encryption (E2EE), which adds a significant confidentiality layer to the transmission of information. However, protecting data on the cloud is just as crucial as conversations, chat backups, and metadata turning into worthwhile assets for hackers. Safety measures should also consider the growing need for expansiveness and performance requirements of the contemporary chat systems, as well as safety measures that cannot hamper performance on the system. Ensuring end user's privacy through the appropriate choice of cryptographic protocols, secure cloud infrastructure, and security audits is possible. Hence, chat providers can guarantee users' privacy anywhere in the world.
Model Kepemimpinan Abu Syekh H. Hasanoel Bashry HG dalam Pengembangan Pendidikan
Authors: Fahmi Zulfan
Published: December 2024

Penelitian ini bertujuan untuk mengkaji model kepemimpinan Abu Syekh H. Hasanoel Bashry HG dalam mengembangkan pendidikan di Yayasan Pendidikan Islam Al-Aziziyah Samalanga, Aceh. Sebagai salah satu lembaga pendidikan Islam terkemuka, keberhasilan Yayasan Al-Aziziyah tidak lepas dari kepemimpinan beliau yang berorientasi pada nilai-nilai Islami dan pembentukan karakter spiritual. Studi ini menggunakan pendekatan kualitatif dengan metode studi kasus untuk memahami karakteristik, strategi, dan dampak kepemimpinan beliau. Hasil penelitian menunjukkan bahwa model kepemimpinan Abu Syekh H. Hasanoel Bashry HG didasarkan pada prinsip Istiqamah, disiplin, musyawarah, aktual dan visioner. Beliau memprioritaskan pendidikan berbasis nilai-nilai Islam, yang tidak hanya berfokus pada penguasaan ilmu agama, tetapi juga penguatan karakter moral dan sosial peserta didik. Strategi kepemimpinan yang beliau terapkan melibatkan sinergi antara tradisi keilmuan pesantren dan inovasi dalam manajemen pendidikan. Dampaknya terlihat pada pertumbuhan kualitas akademik, peningkatan partisipasi masyarakat, dan peran aktif lembaga sebagai pusat pembinaan sosial dan keagamaan. Penelitian ini memberikan kontribusi terhadap pengembangan teori kepemimpinan Islam dalam pendidikan dan dapat menjadi inspirasi bagi pemimpin lembaga pendidikan Islam lainnya untuk mengintegrasikan nilai-nilai tradisional dengan kebutuhan zaman.
Historiska perspektiv på judiska kvinnors berättelser om erfarenhete av antisemitism i Sverige under 1900-talet och 2000-talet
Authors: Thor Tureby Malin , Hall Emma
Published: December 2024

Denna artikel anlägger ett historiskt perspektiv på judiska kvinnors erfarenheter av antisemitism i Sverige under 1900- och 2000-talen. Det empiriska materialet i artikeln utgörs av intervjuer med ett trettiotal kvinnor födda under 1950-, 1970- eller 1990-talet och som identifierar sig själva som judinnor. Med utgångspunkt i intersektionalitetens dialogiska epistemologi och shared authority som betonar vikten av att ge utrymme både för vad de intervjuade berättar om sina erfarenheter, och hur de tolkar sina erfarenheter har vi lyssnat efter vad och hur kvinnorna berättar om sina erfarenheter av antisemitism.
En generell slutsats i artikeln är att rädslan för antisemitism är närvarande i de flesta av kvinnornas liv. En kontinuitet över tid är att skolan utgör en plats där judiska kvinnor upplevt att de är annorlunda. Kvinnor födda under 1990-talet tolkar dock dessa erfarenheter i större utsträckning som antisemitism. Ytterligare en slutsats är att för att förstå kvinnornas erfarenheter av antisemitism bör dessa förstås även i relation till andras erfarenheter både i nutid och i dåtid, eftersom dessa bildar lager på lager av erfarenheter som aktualiseras vid dagsaktuella händelser såsom den 7 oktober, som vi förstår som en mental och temporal brytpunkt. Efter den 7 oktober har känslan av otrygghet ökat och en del kvinnor beskriver rädslan som konstant eller existentiell.
Analysis of Library Spatial Planning in Special Libraries
Authors: Zandia Puja , Samosir Fransiska Timoria , Sa’diyah Lailatus
Published: December 2024

This study aims to assess the physical and non-physical conditions of facilities and infrastructure at the Diplomatic Library of the Ministry of Foreign Affairs and determine whether they are in accordance with the National Standards for Special Libraries. Two librarians were involved as informants in this study. The method used was descriptive qualitative method using observation, interview, and documentation. The results showed that the layout of the Diplomatic Library, including coloring, lighting, and furniture, was good. However, noise is still heard in the library. Regarding air temperature regulation, it is good and comfortable, but the operation of the air conditioning system that does not stop for 24 hours is not suitable for the maintenance of collection materials. In terms of facilities and infrastructure, the Diplomatic Library of the Ministry of Foreign Affairs is in good condition and meets national library standards. However, the library space has not fully complied with the National Library Standard in terms of size. The significance of this study lies in its contribution to the improvement of the quality of the Diplomatic Library of the Ministry of Foreign Affairs. The findings are important as they provide research-based evidence of areas that require improvement to achieve full compliance with the National Standard for Specialized Libraries. The research also provides guidance to other library managers who wish to ensure that their facilities meet national standards.
Bibliometric Study: Research Trends in Field of Archives in Jurnal Kearsipan ANRI 2015-2023
Authors: Novelawaty Yeni Dwi , Lawanda Ike Iswary
Published: December 2024

This study aims to find out how research trends in archival field. This research describes the development of the number of articles, author productivity, contribution of author institution, and a map of research development in the archival science based on keywords and author collaboration patterns in the Jurnal Kearsipan ANRI 2015-2023. The method used in this research is descriptive quantitative by conducting a search using Harzing PoP software on the Google Scholar database by writing the keyword "archival journal" in the publication name column and narrowing down the research in 2015-2023. Searches are also carried out manually through website Jurnal Kearsipan ANRI. Data analysis using Microsoft Excel and VOSviewer software. The results show that the number of articles has increased in 2015-2017, but it tends to be stable in 2018- 2023. The most productive writer is Dharwis Widya Utama Yacob with 6 article titles. ANRI is the agency that has contributed the most to research in the Jurnal Kearsipan ANRI. The most prominent keywords are record(s) and archive. The results of the co-authors visualization show that there is collaboration between authors with an authorship pattern of 2-4 people. However, the pattern of authorship by one person still dominates. By knowing research trends in archival fields through the Jurnal Kearsipan ANRI 2015-2023, it is hoped that the mapping carried out by the researcher can help provide information to the editorial team of Jurnal Kearsipan ANRI and also to researchers who will next research related archival studies.
Characteristics of Digital And Manual Archive Management
Authors: Triana Apri , Halimi Halimi , Hidayatullah Syarif , Iqbal Zikri Muhammad
Published: December 2024

This research aims to exploratively describe the characteristics of archive management at UIN SMH Banten. The characteristics referred to are the percentage of manual or digital archive management. There is also an explanation of the many static and dynamic archives managed at UIN SMH Banten. Apart from the percentages at the archive management stage, several obstacles faced by archivists in managing archives at UIN SMH Banten were also discussed. To obtain valid and credible data, questionnaires, interviews and documentation were used. The informants in this research were all archivists who were tasked with managing archives at UIN SMH Banten. From the results of data collection and analysis, it was found that archive management is generally carried out manually and digitally. Even though archives have been managed manually and digitally, archive management is still dominated by manual methods. The archives that are mostly managed by archivists at UIN SMH Banten are dynamic archives. Digitally managed archives are not yet fully integrated at the university level. Meanwhile, archives that are managed manually are still not in accordance with the archive management classification. One of the obstacles to archival management at UIN SMH Banten is the lack of archival facilities and infrastructure which results in problems with digital archive integration.
A New Species of Genus Achalinus from Hunan Province, China (Squamata: Xenodermatidae)
Authors: Huang Jie , Huang Taifu , Li Hui , Liu Shengqiang , Zhang Ziliang , Zhang Youxiang , Wu Tao
Published: December 2024

A new species of Xenodermatid snake, Achalinus jianghuaensis sp. nov., is described based on an adult male specimen collected from Jianghua County, Yongzhou, Hunan Province, China. The new species can be distinguished from other known species of the genus Achalinus by morphological differences and genetic divergence (p-distance 4.7%, COI gene). The new species differs from its congeners in the following features: (1) dorsal scales throughout 23 rows, strongly keeled; (2) tail relatively long, the ratio of TaL to TL is 0.28:1; (3) suture between internasals remarkably longer than that between prefrontals; (4) loreal single; (5) supralabials six, the fourth and fifth in contact with the eye; (6) infralabials five, the first three in contact with first pair of chin shields; (7) temporals arranged in three rows, 2 – 2 – 4; (8) ventral scales 155; (9) subcaudals 72, arranged in a single row; and (10) dorsal surface of head and body greyish black, venter pale black, the occipital yellow-white patch extending to the head and abdomen. The description of A. jianghuaensis sp. nov. from China brings the total number of Achalinus species up to 28.
First Record of Eryx sistanensis (Squamata, Boidae) from Pakistan and Evaluation of Potential Threats of the Species
Authors: Hussain Saddam , Bukhari Syed Mohsin , Rehman Khalil Ur , Javid Arshad , Hussain Jibran
Published: December 2024

We present the first record of Eryx sistanensis from Pakistan. The field surveys yielded ten specimens of E. sistanensis, collected from four different micro-habitats within 20 GPS localities for the distribution of E. sistanensis in the Cholistan Desert. The Cholistan Desert is part of the Great Indian Desert, including the Thar Desert in the Pakistani Province of Sindh and the Rajasthan Desert in India. It spans approximately 480 km in length and varies in width from 32 to 192 km Human causes, road construction, snake charmers, poaching, and Cholistan Desert jeep rallies were observed as potential threats to the species in the study area. This species exhibits a close morphological resemblance to the Indian sand boa, E. johnii. Morphologically, E. sistanensis can be distinguished from E. johnii by its fewer dorsal scale rows in the mid-body region, lower body weight, smaller body size, and non-blunt tail tip. Specifically, E. sistanensis exhibits 44 – 55 dorsal scale rows at the mid-body (DSR-M), whereas E. johnii possesses 47 – 67 rows. The average measurements of E. sistanensis in Pakistan include a snout-to-vent length of 306.9 ± 51.60 mm, a tail length of 125.9 ± 21.48 mm, a body width of 21.0 ± 1.71 mm, and a total length of 452.3 ± 45.72 mm. The average weight is 130.3 ± 18.48 g. Our study revealed a 697 bp sequence for E. sistanensis, while the Iranian clade of E. sistanensis comprised 627 bp and the Indian clade of E. johnii comprised 648 bp. Phylogenetic analysis using Maximum-Likelihood and Neighbor-Joining trees demonstrated similar relationships between the Iranian and Pakistani clades of E. sistanensis. Eryx johnii was identified as an outgroup in both trees. The uncorrected pairwise genetic differences (p-distance) as Pakistan clade is 0.009 while for Iran clade it 0.0097 indicated a closer relationship between the studied species and the Iranian clade of E. sistanensis than with E. johnii.
Comparison of Control Methods for Half-Car Active Suspension System
Authors: Çelik İbrahim , Arslan Turan Alp , Aysal Faruk Emre , Bayrakçeken Hüseyin , Oğuz Yüksel
Published: December 2024

Suspension systems are of great importance in ensuring stable driving in vehicles and the appropriate reaction of vehicle sub-elements against disturbing inputs. Active suspension systems react quickly to road and driving conditions and positively affect vehicle dynamics and passenger comfort. The main factor in improving active suspension systems' performance is determining the suitable control method against the determined disturbing inputs. This study aims to contribute to the development of vehicle suspension technology by investigating the potential of optimizing the performance of active suspension systems with different control algorithms. In the study, a half-car model with an active suspension system was simulated on three different road profiles: bump-pit, sinusoidal, and ISO-8608. Fuzzy logic, PID, Fuzzy-PID, and MPC control methods are used to control the active suspension system, and their advantages over each other and the passive suspension system are investigated. The effectiveness of the control methods determined on each road profile has been analyzed in the evaluations made regarding vehicle dynamics and passenger comfort. As a result of the study, it is observed that the MPC control algorithm was able to control the active suspension system stably and quickly on all three road profiles with a high success rate. The best results are obtained by the MPC algorithm for bump pit, sinusoidal, and ISO8608 road profiles, and the RMSE values for each road profile are 1.466, 0.047, and 0.449, respectively. The suitable control method minimized vehicle body displacement and pitch angle and improved vehicle stability. In the passenger comfort evaluation, 33.49%, 47.79%, and 12.26% improvements were obtained using the MPC control method on bump-pit, sinusoidal, and ISO-8608 road profiles, respectively.
Discovery of Octospora excipulata (Pezizales) in South America
Authors: Suárez Guillermo M. , Castillo Lucas A. , Ibiris Martín A.
Published: December 2024

The bryophilous ascomycete Octospora excipulata (Clem.) Benkert is reported as a new record in South America, based on samples collected in Tucumán, Argentina. The species was observed infecting the American moss Funaria calvescens (Funariaceae). This study provides a concise description and illustrations highlighting both macroscopic and microscopic characteristics of the species. Additionally, comments on the host identity are included.
Academic Performance of Graduate Students in Video-Conference-Assisted Online Learning during COVID-19 Based on Cohort Data in Pakistan and Indonesia
Authors: M Bhatti Faqir , Miranda Eka
Published: December 2024

The current study found that the COVID-19 pandemic isolation impacted the academic performance of most participants with varied degrees and graduate students in Computer Science and Math. With the option of self-study, online education keeps students on track. This paper aimed to investigate the academic performance impact of graduate program students in the fields of computer science, math, and information systems on online learning during the COVID-19 pandemic. A total of 89 responses were retrieved. The 71 (79.78%) responses came from students at an university in Raiwind, Lahore, Pakistan, and the 18 (20.22%) responses came from students at an university in Jakarta, Indonesia. We discovered that the essential issue of online education was providing students and instructors with easy access to interactive study materials such as video learning. Another significant challenge was the availability of an internet connection, as online learning depended on it. During the COVID-19 pandemic, most students get high course grades (35.96%) and maintain steady course grades (29.21%) in online learning, with some even achieving very good course grades (17.98%). Only a few students (12.36%) and very few (4.49%) received lower grades.
IMPLEMENTATION OF FPGA-BASED RISC FOR LNS ARITHMETIC BY SOFTWARE & HARDWARE
Authors: Abbas N. H.
Published: December 2024

ield Programmable Gate Arrays (FPGAs) have some difficulty with the implementation of deating-point operations. In particular, devoting the large number of slices needed by floating-point multipliers prohibits incorporating floating point into smaller, less expensive FPGAs. An alternative is the Logarithmic Number System (LNS), where multiplication and division are easy and fast. LNS also has the advantage of lower power consumption than fixed point. The problem with LNS has been the implementation of addition. There are many price/performance tradeoffs in the LNS design space between pure software and specialised-high-speed hardware. This paper focuses on a compromise between these extremes, and on a small RISC core design (loosely inspired by the popular ARM processor) in which only 4 percent additional investment in FPGA resources beyond that required for the integer RISC core more than doubles the speed of LNS addition compared to a pure software approach. This approach shares resources in the data path of the non-LNS parts of the RISC so that the only significant cost is the decoding and control for the LNS instruction. The preliminary experiments suggest modest LNS-FPGA implementations, like the algorithms under consideration, are more cost effective than pure software and can be as cost effective as more expensive LNS-FPGA implementations that attempt to maximise speed
Relationship between body mass index (BMI), stage of knee osteoarthritis, and pain severity
Authors: Devi Ninda Callista , Sulistyani  , Setiawan Iwan , Ichsan Burhannudin
Published: December 2024

The prevalence of knee osteoarthritis has increased significantly over recent decades. Osteoarthritis causes pain, swelling, stiffness, loss of function, and decreased quality of life (QoL). Although evidence suggests that increased BMI contributes to both the development and severity of knee OA, research examining the relationship between BMI, OA stage, and the degree of knee pain remains limited, highlighting the need for further investigation. This study aims to determine the relationship between BMI, the stage of knee osteoarthritis, and the degree of pain in patients with knee OA. This research is an analytical observational study with a cross-sectional design, utilizing secondary data (patient medical records). We conducted sample selection using purposive sampling. Data analysis: descriptive analysis, Chi-Square test, and logistic regression. A total of 101 respondents participated in the study, with the majority had a normal BMI (52.5%), had mild-to-moderate knee OA (56.4%), and reported mild pain (52.5%). There was a significant relationship between BMI and the stage of knee osteoarthritis with the degree of pain (p-value <0.05), with odds ratios (OR) for BMI and OA stage at 3.93 and 3.96, respectively. This indicates that higher BMI and more advanced OA stage are associated with a greater degree of knee pain in patients. Weight loss is an effective strategy to reduce mechanical stress on joints and decrease inflammatory mediators, thereby lowering chronic inflammation and alleviating pain. Further research on effective management strategies for knee OA is essential to help reduce the disease burden and improve the QoL of knee OA patients.
Unlocking Geological Hydrogen Storage with Ammonia: An Effort for Net-Zero Future
Authors: Aftab Adnan
Published: December 2024

Hydrogen gas (H2) generation systems, comprising carbon capture and storage technology (CCST) play a crucial role to achieve the U.N. Net Zero goal before 2050. However, a critical challenge in grid-scale H2 storage is the low volumetric energy density. One prospective approach is to use ammonia (NH3) as a chemical carrier for H2 and store it. This paper presents a state-of-the-art report on NH3 and H2 that details a variety of scientific challenges for their geological storage at reservoir conditions.
Age-related changes in eye movements during pictorial recall in older adults
Authors: Berthouzoz pauline , Chiquet Sandra , Martarelli Corinna
Published: December 2024

During the recall of pictorial information, individuals typically exhibit eye movements directed toward the locations on which they focused during perceptual encoding. This behavior is thought to support memory retrieval by linking spatial information to cognitive processes. Given the known memory decline associated with healthy aging, investigating changes in eye movement behavior during recall is crucial. In the present study, we compared the eye movement patterns of older (N = 38, 65–75 years) and younger adults (N = 37, 20–30 years) during different pictorial recall tasks. Our findings indicate that both age groups looked back at the locations where the stimuli were presented; however, this effect was less pronounced in older adults. Older adults displayed less systematic and more dispersed fixations across the screen. However, despite these changes in eye behavior, we found little evidence of changes in pictorial recall performance between older and younger adults, as measured by a pictorial recall task assessing the visual details of the stimuli and an old/new recognition task. Counter to our expectations and previous findings, older adults rated their mental images as more vivid than younger adults did. This finding could suggest that older adults either perceive or interpret vividness differently, or it might reflect a subjective bias, as older adults may feel more confident about their mental image vividness. Overall, our results demonstrate that eye movement behavior during pictorial recall changes with age, which highlights the need for further investigation into the underlying mechanisms and possible consequences of this change.
Too Many Tools? The Consequences of Cultural Repertoire Diversity among Expectant Mothers
Authors: Garrett Sarah
Published: December 2024

Many components of cultural repertoire theory have proven difficult to operationalize. This has hindered research on the effects of individual cultural resources and about the accuracy of repertoire theory’s key premises. This paper draws on original longitudinal survey data to investigate the effects of cultural repertoire diversity on individual wellbeing. Using a novel measure of the variety of interpretive frames known by expectant mothers, I find that women with more diverse cultural repertoires experience worse postpartum wellbeing than do their counterparts, controlling for relevant covariates. This contradicts hypotheses derived from repertoire theory. Accompanying qualitative data suggest that uncertainty-based anxiety and distress underlie the effect and reveal new insights about the social context of repertoire development. This paper overcomes a long-standing barrier to understanding how culture affects social life, identifies a previously unrecognized socio-cultural influence on postpartum wellbeing, and suggests new directions for the study of culture.
Preface
Authors: Mohamad Abdul Mohit
Published: December 2024

Preface for JAPCM Issue 5, Vol 2
Para hacer un clásico, usa dos. No sense of place de Joshua Meyrowitz, entre Goffman y McLuhan
Authors: Serra Marcello
Published: December 2024

No sense of place, de Joshua Meyrowitz, es un clásico de los estudios sobre la comunicación nunca traducido al español. La obra combina el pensamiento de Marshall McLuhan con la concepción dramatúrgica de Erving Goffman, elaborando un modelo original para el análisis de la influencia de los medios de comunicación en los comportamientos sociales. A casi cuarenta años de su publicación, la perspectiva de Meyrowitz nos ayuda a entender fenómenos de estricta actualidad como la crisis del saber experto, la pérdida de liderazgo en la política o la redefinición de los roles de género. Esta longevidad analítica otorga legitimidad a la ambición de considerar los medios de comunicación como una variable fundamental para el estudio de la sociedad y sus transformaciones.
Experience in manual installation of magnetite anodes in corrosion protection systems
Authors: Terekhov V.V. , Pershukov V.V.
Published: December 2024

With the development of modern technologies, new opportunities appear to optimize the costs of corrosion protection (CP). The reduction in prices for modern magnetite anodes (due to the opening of a fully Russian production by Chemservice) allowed us to develop a new method of their installation without the use of expensive special heavy equipment.
Organizations responsible for the operation of underground pipelines can now repair and install anodes independently and in the shortest possible time. This article presents the results of pilot tests of a new method of installing anodes in various regions of Russia on main pipel ines and gas distribution facilities.
Development of some AFSA salts of alkylphenol sulfuric acid influence of St10 steel on corrosion process in the 0,1 N HCl solution – kerosene system
Authors: Aliyev T.A. , Huseynov G.Z. , Mehdiyev I.S.
Published: December 2024

The effect of alkylphenol sulfuric acid on the corrosion process of St10 steel in the two-phase 0,1 N HCl solution – kerosene system of magnesium, zinc and barium salts, (conventionally indicated as Mg-HГПИ-2, Zn-HГПИ-2 and Ba-HГПИ-2) previously studied on St3 steel samples, was confirmed by gravimetric method. It was determined that, all of the compounds shown in the 25...200 mg/L concentration range significantly weakens the corrosion process of St10 steel in the mentioned two-phase acid system. It is shown that, their effectiveness in analogous conditions does not differ sharply from each other and this is also associated with the fact that the structures of the ions Mg2+, Zn2+, Ba2+ do not differ sharply from each other, as well as with being the same of organic anion, which has a decisive role in the ads orption process. It is also shown, that corrosion characteristics of St10 steel in the shown system are very clos e to each other.
Cleaning the heat exchanger pipes from salt deposit
Authors: Tayekenova A.T. , Akurpekova A.K. , Tastemirova A.T. , Nefedov A.N. , Dalelhanuly O.
Published: December 2024

The operation of heat exchange equipment is associated with the formation of scale deposits as a result of the crystallization of calcium and magnesium salts. E ffective sediment removal is still a challenge. The paper presents the results of a study that shows that 10% sulfamic acid dissolves the precipitate up to 46% in the PP-1 chemical water treatment (ChWT) heat exchanger tube, while the average corrosion rate of the heat exchanger tube metal is 0,31 g/m2·h. Deposits from the tubes of the PP-1 ChWT heat exchanger were also subjected to dissolution with hydrochloric acid. A kn own method for producing inhibited hydrochloric acid, including the introduction of a nitrogen-containing corrosion inhibitor. Thiourea was used as a nitrogencontaining inhibitor. According to the results of laboratory tests, it was shown that 20% hydrochloric acid with the addition of thiourea 1%, 5%, 10%, 15% and 20% completely dissolves the precipitate, while the corrosion rate of the metal of the heat exchanger tube was 0,685 g/m2·h, 1,17 g/m2·h, 2,12 g/m2·h, 2,76 g/m2·h, 4,79 g/m2·h. It should be noted the negative effect of zinc present in brass on the protective properties of such corrosion inhibitors as urotropine and thiourea, which show good protective effects on pure metals (iron, copper). This is apparently due to its predominant dissolution from the alloy upon contact with acids and further dissolution of the base metal itself. The optimum protective effect of a corrosion inhibitor of 55,2% was shown on a coppe plate immersed in a solution of 5% hydrochloric acid + 100 mg/d m3 of AZ 8104 inhibitor.
On the decisive role of biofilms of microorganisms in the initiation and development of microbiological corrosion of metals (part 2)
Authors: Belov D.V. , Belyaev S.N.
Published: December 2024

The reliability of technical products is determined by their resistance to the influence of the external environment, the natural component of which are destructor microorganisms (bacteria, yeast, microscopic fungi, etc.).
The low efficiency of protecting metals from biocorrosion is largely due to insufficient knowledge of all aspects of the damaging effects of microorganisms. There are no quantitative data on the processes of biodamage of equipment elements in real operating conditions. To date, reliable methods for diagnosing and predicting the durability of metals and their structures under conditions of interaction with wildlife have not been developed.
In this work, an attempt was made to explain the role of biofilms of microscopic fungi as the important factor in the mycological corrosion of metals. The formation and accumulation of a corrosive medium is possible as a result of the metabolic processes of microscopic fungi that form a biofilm. A detailed determination of the mechanism of biocorrosion of metals is a complex scientific problem.
The purpose of this article is to analyze experimental data on the study of aerobic biocorrosion of metals mediated by the metabolic activity of biofilms of bacteria and microscopic fungi.
Anticorrosive protection of steel with Drotaverine in 0,5 M H2SO4 solution
Authors: Bryksina V.А. , Tsygankova L.E. , Alekhina O.V. , Kur`yato N.A.
Published: December 2024

It is known that organic compounds are the most effective corrosion inhibitors. The main disadvantages of their use are the high cost, as well as the fact that by their nature they can be toxic. As a result there was a need to find new safe, cheap and effective corrosion inhibitors. This list can include drugs that can act as potential inhibitors due to the presence of nitrogen, sulfur, etc. atoms in their structure. The paper examines the possibility of using the expired drug Drotaverine as a corrosion inhibitor of carbon steel in 0.5 M H2SO4. The concentration of the drug was 20…80 mg/l – Gravimetry, scanning electron microscopy (SEM), potentiodynamic polarization, electrochemical diffusion and impedance spectroscopy were used to determine the most effective concentration of Drotaverine – 80 mg/l, which corresponded to a protective effect of 95%. All studies were conducted at room temperature. A decrease in the capacity of the double electric layer in the presence of an inhibitor indicates the adsorption of the drug components on the metal surface. The results of polarization measurements showed that Drotaverine is a mixed-type inhibitor. Analysis of the state of the metal surface by means of a scanning electron microscope after exposure to an inhibited solution allows us to judge the high protective effectiveness of Drotaverine in the highest concentration under study.
Improving the corrosion resistance of low-alloy structural steels by pulsed plasma treatmen
Authors: Kutukov A.K. , Sergeechev A.A. , Gaponova V.V.
Published: December 2024

In this scientific paper, the effect of pulsed plasma treatment on the corrosion properties of structural steels (St45, 40X, 65G, SHX15) is researched. Irradiation of samples with helium and nitrogen plasma was carried out on a quasi-stationary plasma accelerator under various modes accompanied by surface melting. Corrosion resistance tests were implemented by constant immersion in a 5% NaCl solution for 7 days, control weighing was performed once every 24 hours. It is known that the corrosion properties are influenced by the surface condition: roughness, microhardness and the structure of the surface layer. During pulsed plasma processing, a strong change in these characteristics, especially roughness, is possible. In view of this, micrographs of the relief of the treated surface were additionally obtained. It was found that all steel grades are characterized by an improvement in corrosion properties, but with varying degrees of efficiency.
Innovative approaches to protecting pipelines from corrosion of the inner wall by alternating polarization method
Authors: Dryndrozhik D.E. , Boyko S.I.
Published: December 2024

The article is devoted to an actual problem anti-corrosion protection of metal pipelines (main, technological, downhole columns, plumes). The disadvantages and advantages of the currently existing basic methods of protecting metals from corrosion are considered.
The issues of possible negative impact of cathodic protection on the inner wall of the pipeline during transportation of corrosive products are considered. Two schemes of cathodic protection of a pipeline without an internal electrolyte and a pipeline with an internal electrolyte are presented. In the schemes, the arrows indicate the distribution of the protective current Iprotect. from anode grounding in the pipe-to-ground circuit. It is shown in scheme 2 how the current is distributed along the conductor of the 1st kind a metal wall Iprotective metal. and along the conductor of the 2nd kind electrolyte Iprotective.elektr. which leads due to electrolysis to electrocorrosion of the inner wall of the metal pipeline in the electrolyte environment under the action of an external electric field.
The authors have proposed a method for protecting pipelines subject to corrosion of the inner and outer walls, to apply a method for simultaneous anticorrosive protection of the inner and outer surfaces of metal pipelines (RF Patent No. 2533467, 30.10.2012., Boyko S.I., Petrov A.V., A method for anticorrosive protection of the inner and outer surfaces of metal pipelines by applying alternating current).
The principle of operation of anti-corrosion protection by applying alternating current is described. The essence of the influence of weak alternating current on the kinetics of the corrosion process is briefly described. The main advantages of the method in comparison with traditional methods are given.
Copper deposition via galvanic replacement in a CuCl solution in ethaline
Authors: Filippov V.L. , Rudnev A.V.
Published: December 2024

Copper deposition via galvanic replacement from aqueous sulfate electrolytes does not allow direct copper electroplating on metals and alloys more electronegative than copper (for example, iron and steel), since it prevents good adhesion of the coating to the matrix. An effective solution to this problem is the binding of copper ions in an electrolyte solution into stable complexes. The cathodic reduction of such complexes occurs at potentials more negative as compared to hydrated copper ions, which reduces the electromotive force of the galvanic replacement process. It is known that copper ions form chloride complexes in deep eutectic solvents based on choline chloride. In this work, for the first time, the contact deposition of copper on iron and steel substrates is investigated in a copper(I)-containing solution in the deep eutectic solvent – ethaline. Deposits are characterized by atomic force and electron microscopies and energy-dispersive X-ray spectroscopy. It has been established that copper deposition via galvanic replacement in a CuCl-containing ethaline takes place, however, the rate of this process is low and strongly depends on the substrate material (iron, grade-U8 steel, grade-20 steel). Furthermore, we show that galvanic replacement in the ethaline-based solution does not have any noticeable effect on morphology of the galvanic copper coating and its adhesion to the substrate.
On the corrosive aggressiveness of operating conditions at infrastructure facilities of underground gas storage facilities
Authors: Vagapov R.K. , Ibatullin K.A.
Published: December 2024

Gas injected or withdrawn from underground storage facilities is characterized by the presence of corrosive carbon dioxide and hydrogen sulfide (from associated petroleum gas from oil fields or coal seams). In such environments, in the presence of moisture, conditions will arise for carbon dioxide or hydrogen sulfide corrosion to occur. However, there have been no previous studies of the problems of internal corrosion at underground gas storage facilities, despite their widespread distribution (PJSC Gazprom operates 23 such gas storage facilities in Russia). According to Gazprom VNIIGAZ LLC, it is incorrect to use tests in the vapor phase for such conditions (without contact of the metal with the aqueous environment), which leads to underestimated corrosion rates, not reflecting the real corrosion situation in underground gas storage facilities. The same erroneous results are obtained by using models (programs such as Norsok or others) to calculate the theoretical corrosion rate of steel used in underground gas storage facilities, because they were developed for completely different conditions of carbon dioxide corrosion on oil pipelines. The only correct way to obtain reliable corrosion data is to conduct model corrosion tests. Based on the results of the analysis of operational parameters and the research carried out by Gazprom VNIIGAZ LLC, it was determined that the most optimally simulate the aggressiveness of the environments of underground gas storage facilities are 2 types of tests - under conditions of moisture condensation on the metal and under conditions of variable wetting of the steel surface on a corrosion test bench developed by us. Simulation tests carried out by Gazprom VNIIGAZ LLC showed an increased rate of internal corrosion of carbon and low-alloy steels (up to 1…4 mm/year) with corrosion-hazardous parameters typical for underground gas storage facilities. During testing, increased localization of carbon dioxide and hydrogen sulfide corrosion is observed. Under such corrosive conditions, the main methods of protecting underground gas storage facilities will be either the use of corrosion inhibitors or the replacement of material design with corrosion-resistant steel.
Distribution of cathodic protection current and residual corrosion in insulation defects of large-diameter oil and gas pipelines
Authors: Khizhnyakov V.I. , Negodin A.V. , Kalinichenko V.S.
Published: December 2024

The results of long-term corrosion tests of 17GS pipe steel samples under field conditions at a specially equipped landfill using a pipe with a diameter of 1220 mm are presented. It is established that seasonal freezing of the soil does not have a noticeable effect on the flow of currents of corrosive macroparticles of differential aeration. The redistribution of the loss of mass of samples due to the flow of macroparticles of differential aeration in high-resistance soils of the taiga–swamp zone of the central part of Western Siberia does not exceed 2…5% of the total loss of mass of samples, which indicates that the currents of corrosive microparticles are most effective in these conditions.

Based on the results of long-term corrosion tests, it was found that when the cathodic protection current density is equal to the oxygen limit current density, with cathodic polarization of 0,15…0,30 V, the residual corrosion rate due to the effect of self-regulation of cathodic protection on all samples decreases to values not exceeding 0,005…0,010 mm/year, although in the absence of cathodic The corrosion protection rates of these samples under various oxygen delivery conditions were 0,08…0,13 mm/year. It is shown that the ratio of the cathodic protection current density to the oxygen limit current can serve as the decisive criterion for choosing the optimal cathodic protection modes, which allows determining the residual corrosion rate of steels in express mode under various cathodic protection modes and reducing the cathodic decomposition reaction of water with the release of hydrogen on the protected surface to a controlled minimum.
Assessment of Local Corrosion Based on Data Obtained From Electrical Resistance Sensors
Authors: Gladkih T.D. , Markin A.N.
Published: December 2024

Complications related to the corrosive environment, according to Rosneft, are among the prevailing ones at oil and gas production facilities and occupy the 4th place among other factors complicating production – 12 % of the complicated mechanized well stock. Therefore, diagnostics and monitoring of the condition of oilfield equipment for corrosion wear is an urgent direction for improving the reliability of the technological process of oil production and transportation. The «electrical resistance» (ES) method is one of methods of corrosion monitoring in the oil and gas industry. The disadvantage of the ES method is that the devices currently used do not allow to assess the unevenness of corrosion losses on the surface of the material, that is, they cannot identify the process of local corrosion development. Nevertheless, it is local corrosion that causes failures of oilfield equipment. The article proposes a physical model of the development of corrosion, reflecting the relationship of changes in the resistance of a corroding element with the rate of corrosion consumption. The corrosion process is described through special cases of uniform and local corrosion having different rates of corrosion flow. Based on
the results of the analysis of the physical model of local corrosion, methods for interpreting data obtained from electrical resistance sensors are proposed, which allows detecting the manifestation of ulcerative corrosion. A marker of developing local corrosion is a change in the dynamic of sensing element resistance growth.