bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect of Mannitol and Hypertonic Sodium Administration on Hemodynamic Parameters Under LiDCO Monitoring in Patients Undergoing Elective Craniotomy
Authors: Moharari Reza Shariat , Hatam Maryam , Emami Pardis , Neishaboury Mohamadreza , Sharifnia Seyed Hamidreza , Etezadi Farhad , Shirani Mohammad , Najafi Atabak , Pourfakhr Pejman
Published: April 2024

In craniotomy surgery, it is important to maintain hemodynamics and prevent the increase of intracranial pressure. Using semi-invasive methods such as LiDCO monitoring is a good option in this situation. This study aimed to evaluate the effectiveness of mannitol and hypertonic sodium on hemodynamic parameters in patients undergoing elective craniotomy. This randomized clinical trial was done on 40 patients of both genders. Patients whose ages were between 18-65 years, who had American Society of Anesthesiologists (ASA) score I and II, and who underwent craniotomy surgery were eligible for this study. Participants were divided into two groups receiving hypertonic sodium and mannitol. Hemodynamic parameters were evaluated before surgery, 20 minutes, and 60 minutes after surgery in both groups, under Lithium dilution cardiac output (LiDCO) monitoring. The results showed that there was no difference between groups in terms of the average fluid intake, the duration of the operation, the amount of urinary output, and the primary hemodynamic characteristics. Significant differences were recorded in the evaluation of hemodynamic parameters. The results demonstrated a reduction in systolic, diastolic, and mean arterial blood pressure during 20 to 60 minutes after mannitol injection compared to hypertonic sodium injection. Additionally, the effectiveness of both therapies on maintaining cardiac function was similar, but the use of mannitol led to a greater decrease in arterial and peripheral vascular resistance. It can be concluded that mannitol may be more effective than hypertonic sodium during craniotomy procedures in terms of reducing blood pressure monitored with LiDCO.
The Impact of Epidural Analgesia on Cesarean Section Rates and Neonatal Outcomes: A Retrospective Cohort Study
Authors: Hajipour Asghar , Montaseri Alireza , Rahimi Mojgan , Orandi Amirhossein , Rahmah Laila , Samadi Shahram
Published: April 2024

This retrospective cohort study aimed to assess the frequency of emergency cesarean sections with epidural analgesia and its implications on Apgar scores and Neonatal Intensive Care Unit (NICU) admissions among patients at Tehran University of Medical Sciences Hospitals from 2017 to 2018. Data from 7170 patients were extracted from the hospital information system (HIS) through a consensus method. Descriptive statistics, cross-tabulation, and logistic regression analyses were conducted using Stata v17 software. Out of 9387 patients, 62.7% underwent cesarean sections, and 37.1% had normal vaginal deliveries. Epidural analgesia was administered to 127 patients, with 98.4% achieving successful normal vaginal delivery. Nulliparous women constituted 64.29% of those receiving epidural analgesia. Apgar scores at five and ten minutes were comparable between epidural and non-epidural groups. Emergency cesarean rates with epidural analgesia were low (1.6%). Findings align with previous research indicating no significant impact of epidural analgesia on Apgar scores. Nulliparous women predominated in the epidural group, consistent with pain pattern disparities. The study supports recent research showing epidural analgesia does not increase emergency cesarean rates, even in high-risk pregnancies. This study suggests that epidural analgesia does not significantly impact Apgar scores, NICU admissions, or emergency cesarean rates. While the comprehensive dataset enhances reliability, retrospective design limitations are acknowledged. Prospective studies exploring factors contributing to neonatal mortality and overall labor duration are recommended for more robust evidence.
In Silico Identification of Effective Genes for Acute Leukemia Classification Using a Spline Regression-based Framework
Authors: Yazdanparast Maryam , Sheikhpour Razieh , Soroush Morteza Zangeneh , Ghanizadeh Fatemeh
Published: April 2024

Background: Microarray technology enables the examination of gene expression in thousands of genes and can be highly effective in identifying various types of cancers, including leukemia. However, many genes in microarray data are redundant and lack useful information for cancer diagnosis. The main objective of this study is to identify relevant and effective genes in classification of leukemia microarray data using a spline regression-based method, taking into account the correlation between genes.
Materials and Methods: In this analytical study, leukemia microarray data are used to identify relevant genes in classification of leukemia into Acute Myeloid Leukemia (AML) and Acute Lymphoblastic Leukemia (ALL) using a spline regression-based gene selection method, called SRS3FS based on ℓ2,p-norm (0 < p ≤ 1). Subsequently, the support vector machine (SVM) algorithm is employed to classify leukemia data into AML and ALL.
Results: In this study, the classification results of SVM algorithm for 5, 10, 15, and 20 genes reveal that the SRS3FS method, employing ℓ2,1/4-norm, ℓ2,1/2-norm and ℓ2,3/4-norm, exhibited the highest accuracy of 97.06% when identifying 10 genes for distinguishing between AML and ALL. Moreover, the leukemia data was classified into AML and ALL with an accuracy of 100%, using a gene identified by the SRS3FS method based on ℓ2,3/4-norm and ℓ2,1-norm. The gene labeled as number 3252, annotated as GLUTATHIONE S-TRANSFERASE, MICROSOMAL, is recognized as the most important gene.
Conclusion: The experimental results on leukemia microarray data demonstrate that the spline regression-based gene selection method can effectively identify relevant genes in classification and prediction of leukemia.
Relationship between risk level, risk perception and preventive behaviors of myocardial infarction and stroke in people aged 30 to 60 years of Jiroft city, south of Iran in 2022
Authors: Faryabi Reza , Jafarnezhad Aboubakr , Daneshi Salman
Published: April 2024

Background: Among non-communicable diseases, myocardial infarction (MI) and stroke are the most common cause of death in the world. The current study aimed to investigate the relationship between risk level and preventive behaviors of heart in people aged 30 to 60 years of Jiroft city in 2022.
Methods: This research was a cross-sectional study. The population under study is 383 middle-aged individuals (30-60 year) of Jiroft city with the combined sampling method. The data collection tools was reseacher made, included demographic questions, risk perception questionnaires, and preventive behavior questions for MI and stroke. Information was analyzed by SPSSv21 software and further analyzed with descriptive statistics tests, chi-square test, independent t-test, one-way ANOVA, and Pearson correlation test at level 0.05.
Results: The participants' average age was 41.26 ± 8.32 years. The highest percentage (51.4%) of middle-aged individuals had a risk level between 10 and 20% for cardiovascular diseases. The study investigated a significant correlation (p < 0.01) between risk level, risk perception, and preventive behaviors for MI and stroke. Smoking and physical activity failed to reveal a significant correlation (p > 0.05), but other dimensions of preventive behaviors correlated positively and significantly with the total score of preventive behaviors (p < 0.01).
Conclusion: According to study findings, risk perception plays a significant role in influencing preventive behaviors for MI and stroke. It is recommended to conduct educational interventions to enhance understanding of the actual risk of MI and stroke, particularly among individuals with a high-risk assessment level. This would encourage the adoption of preventive behaviors in this population.
The Role of Librarians' Interpersonal Communication in Circulation Services (Study at the Lampung Provincial Library and Archives Office)
Authors: Ulvi Sahelga , Bisri Mustofa Muhamad , Wuryan Siti
Published: April 2024

This study aims to determine the role of librarian interpersonal communication in circulation services at the Lampung Provincial Library and Archives Office. The research method used is descriptive qualitative research, which provides an overview or information about the problem under study. Data collection was done based on observation, interviews, and documentation techniques. The data analysis techniques used were data reduction, data presentation, and conclusions. The results of this study show that interpersonal communication has a role in providing services in libraries, namely openness, empathy, supportiveness, positiveness, and equality. Researchers conducted interviews with 5 librarians and 5 users. And use structured interviews. The results show that librarians have applied other communication skills such as openness, empathy, support, and positivity. On the other hand, in users opinion these skills have not been fully applied. Overall, it can be concluded that the circulation service process at the Lampung Provincial Library and Archives Office provided by librarians is quite good and users feel quite satisfied.
Keywords: interpersonal communication, librarian, circulation services
The Use of UIN Raden Fatah's E-Library Application Reviewed from Total Quality Management (TQM)
Authors: Yanto ‎ , Dewa Satria Wijaksana Muhammad
Published: April 2024

This research is motivated by an interesting phenomenon of changing times marked by the mushrooming use of information technology that makes the Library able to provide all services quickly, precisely, accurately, anytime, and anywhere. And, in real-time these services can be utilized by users, namely the use of e-library applications applied at the UIN Raden Fatah Library is very interesting to be researched. This research is quantitative, and data were collected by using applications from the Library Science students of class 2020. To see the use of the application, researchers use the theory of total quality management (TQM) which is reviewed through 4 principles, namely the principles of user satisfaction, respect for users, management in line with facts, and continuous improvement. Of the four principles, the survey results are above the average of 50%, meaning that each indicator in each principle has good service quality such as a comfortable application interface, user-friendly application use, good and satisfactory e-library service quality, adequate collection, and can meet user needs. Library efforts that continuously add to existing collections in the e-library application are updated to the latest version. There is a huge need to socialize the use of the application and promotional activities for the application to continue to be carried out. The research data shows that the survey results 75% on average, have gone well. Based on the results of this simple research, all principles in TQM have achieved excellent scores, this is shown by the average acquisition of survey numbers above 50%.
Keywords: e-library, total quality management
Management Information System at Hidayatul Mubtadi'in Islamic Boarding School in South Lampung
Authors: Nasrul Rifai Rendra , Nasor Muhammad , Pramudya Utama Esen , Ayu Puspita Sari Nina
Published: April 2024

This research aims to find out about Hidayatul Mubtadi’in the Islamic boarding school in South Lampung management information system. The availability of a good information system will greatly support educational activities in an institution. The significant developments in information technology have led to fundamental changes, including a large positive impact on increasing productivity and policy formulation of government institutions. A management information system is a system used to present information to support operations, management, and decision-making within an organization. This research employs a survey research method. The data consists of primary data obtained from the head of the Islamic boarding school, the foundation’s secretary, teachers, and staff. Meanwhile, secondary data refers to supporting tools or documents related to the research object, such as documents, vision, mission statements, etc. Data collection methods used in this research include observation, interviews, and documentation, and involve data collection, data reduction, data presentation, and conclusion.
Keywords: system, information, management, Islamic Boarding School
Uncovering the Past Through Voices: Exploring Oral History as a Primary Source: A Case Study of the National Archives of Republic Indonesia [ANRI]
Authors: Mardiyanto Verry , Agniya Ursa , Pusaka Hidayat Angga
Published: April 2024

This research explains the use of the oral history collection of the National Archives of the Republic of Indonesia (ANRI) to optimize historical information as a primary source. Sources of information with this primary category relate to information from historical actors or eyewitnesses and witnesses to an event. Oral history archives are the main content of this research. The method used is descriptive qualitative, focusing on observing the content of oral history information published on websites and various social media platforms affiliated with ANRI. This research aims to analyze the oral history collection owned by ANRI and the historical information content contained in the collection. The results of this paper describe the content of oral history, which has primary information specifications based on the information needs in the archives. This information is helpful to complement information originating from textual sources. Open access to ANRI’s oral history collection helps fulfill information needs that primary textual information sources cannot fully meet.
Keywords: ANRI, archives, information services, oral history, primary sources, website
Communication of Haji Oemar Said Tjokroaminoto: Father of the Indonesian Nation (1905-1934)
Authors: Iryana Wahyu , Bisri Mustofa Muhamad
Published: April 2024

This research embarks on a thorough exploration of communication Haji Oemar Said Tjokroaminoto’s role as a distinguished nationalist, revered as the Nation’s teacher, and his monumental contributions to the Indonesian struggle for independence. The primary objectives of this study are: firstly, to unveil the intricacies of Tjokroaminoto’s biography, unraveling pivotal events and milestones in his life, and secondly, to delve into the profound thoughts he held regarding Indonesian nationalism. Employing rigorous historical research methods, the study examines the nuances of Tjokroaminoto’s thinking during his era, offering a unique perspective to understand the shaping of the societal ethos at that time. This research extends beyond a mere biographical account, aiming to illuminate the intricate interplay between Tjokroaminoto’s life, ideologies, and the socio-political landscape, ultimately contributing to a more comprehensive understanding of his enduring legacy in the formation of Indonesian national identity.
Keywords: HOS, Cokroaminoto, Indonesia
Analysis Of Information Retrieval System In The Repository Of The State Islamic University (UIN) Raden Intan Lampung
Authors: Yunita Irva , Nawafella A.P Reza
Published: April 2024

This research discusses the information retrieval system through the UIN Raden Intan Lampung Repository.This research uses a qualitative research design with data collection using literature study, documentation and observation. The information retrieval system in the UIN Raden Intan Lampung repository can be done through searching and browsing. Searching the repository can be done with simple search and advanced search. In simple search, users can search by entering keywords, title, author and subject. Searching via searching can also use Boolean operators, namely AND, OR, and NOT. Browsing at the UIN Raden Intan Lampung Repository can be done by year, subject, division and author. Furthermore, searching for documents via browsing by author's name is also not optimal, this is due to differences in author name metadata input to different repositories, namely there are names that are reversed. and not reversed, so this also requires user accuracy in searching documents
Keywords: Information retrieval, Repository, Retrieval system
Improved the accuracy of IOT based LPG leakage detection system with early fire prediction and smart alert
Authors: Ahsan Arif Md. , Kaderye Golam , Mahmud Akib Md. Appel , Md. Fehir Shah Syed , Mimi Shuma Farhana
Published: April 2024

Safety is of utmost importance in the realm of smart cities, smart homes, and industries. Among the various safety measures implemented in a smart city, the detection of gas leakage and the prevention of mass fires are crucial for safeguarding lives and valuable assets. This research paper introduces a novel system that not only detects gas leakage but also provides early predictions of fire outbreaks. Unlike the conventional gas leakage detectors available in the market, which only alert when the gas concentration reaches a high level, our system utilizes fuzzy logic, environmental temperature, and humidity to accurately detect gas concentration levels and predict early fire symptoms. By employing the Internet of Things (IoT) approach, this system promptly sends notifications and sensor readings to the relevant individuals, enabling them to take immediate action and prevent extensive damage.
Ciluba Speaking Learners’ Interference in Sound Production
Authors: Mukengeshayi Muana Apol’ham Mutombo
Published: April 2024

This study addresses interference produced by Cilubà speaking learners in their English learning process in the classroom (in some schools of Mbujimayi). It aims at providing some hints which are likely to help overcome such difficulties of language learners use English with some connected speech sounds. Observation and questionnaires (interviews) are approaches used to collect and interpret the data. After investigation, the study has proved that there are three types of sounds interference learners’ levels, namely grouped as Higher interference users (75% of 80 learners observed); Intermediate level learners (36% of 125 learners observed); and Advanced level learners (25% of 42 learners observed).
Some remedies should be taken into consideration like, intensification of reading tasks, the allotment of more time to oral tasks than to written ones by making learners talk more and more, the focus on learners’ pronunciation problems for some items containing complex vowel sounds, training learners how to discriminate sounds they cross enough difficulties, and helping them to have more practice on spelling exercises.
Neformalno izobraževanje fizikalnih vsebin in mladinsko raziskovalno delo: Mladi raziskovalci, raziskovalni tabori in festivali
Authors: Slavinec Mitja , Klemenčič Eva
Published: April 2024

Gradivo je namenjeno študentom izobraževalne fizike, bodočim učiteljem. Neformalno izobraževanje je pomembna dopolnitev formalnim oblikam izobraževanj na vseh ravneh šolanja, saj podpira razvoj ključnih kompetenc ter vzpodbuja mlade k raziskovanju. V gradivu se osredotočamo na mladinsko raziskovalno delo in raziskovalne tabore. Ker so učitelji mentorji mladim raziskovalcem, predstavimo potek in napotke za pripravo in predstavitev mladinskih raziskovalnih nalog s poudarkom na področju fizike in astronomije. Bralce seznanimo z naborom številnih raziskovalnih taborov in dogodkov, ki se izvajajo v Sloveniji, ter podrobneje predstavimo astronomski tabor, na katerem sodelujejo tudi učitelji fizike.
Wątki antysemickie w „Kurierze Łódzkim” w okresie międzywojennym
Authors: Hrycek Miłosz
Published: April 2024

„Kurier Łódzki”, zasłużony dla kultury łódzkiej dziennik o bogatej tradycji wydawniczej, był jednym z najważniejszych czasopism międzywojnia. Dzięki m.in. działalności Jana Stypułkowskiego, właściciela „Kuriera”, Łódź dość szybko przestała być traktowana jako tylko prowincjonalny ośrodek wydawniczy. Łódzkie dzienniki, poprzez rozszerzanie swojego zasięgu, zdobywały rynek czytelniczy w innych regionach kraju. Wydawnictwa Stypułkowskiego, w tym najważniejszy dla koncernu „Kurier Łódzki”, wywarły istotny wpływ na rozwój łódzkiej prasy. Dziennik Stypułkowskiego konsekwentnie realizował redakcyjną politykę, zgodną z ewolucją pisma. Jednak pismo przez cały okres programowo prezentowało wartości narodowo-katolickie. Wobec mniejszości narodowych stanowisko było jednoznaczne, zwłaszcza wobec mniejszości żydowskiej. Antysemicka retoryka najbardziej zauważalna była w pierwszych latach II Rzeczpospolitej. Stopniowo zmieniała się na bardziej merytoryczną, jednak nie można jej określić mianem obiektywnej.
Być politykiem, być publicystą – o Janie Marii Rokicie na wybranych przykładach
Authors: Mroziński Juliusz
Published: April 2024

Artykuł jest próbą porównania wypowiedzi Jana Marii Rokity z lat 1989–2007, czyli okresu aktywnego uczestnictwa w polityce, z tezami, jakie stawiał jako publicysta. Ich skonfrontowanie ma pomóc w odpowiedzi na pytanie o zakres ewolucji poglądów niedoszłego premiera w odniesieniu do sytuacji Polski. Analizie poddano informacje medialne, w których odwoływano się do słów posła Jana Rokity oraz 66 jego komentarzy, które ukazały się między 1 września 2008 a 31 sierpnia 2009 roku w portalu dziennik.pl.
Aktor w teatrze radiowym
Authors: Pawlik Aleksandra
Published: April 2024

Artykuł ma na celu przybliżenie specyfiki aktorstwa radiowego. Wskazuje na podobieństwa i różnice z teatralną i telewizyjną formą sztuki aktorskiej, określa cechy wyróżniające grę w teatrze radiowym w stosunku do innych mediów. Omawia także metody pracy reżyserów Teatru Polskiego Radia z aktorami podczas prób i nagrań słuchowisk.
Segmentacja polskiej prasy muzycznej
Authors: Mikosz Joanna
Published: April 2024

Artykuł składa się z kilku części. Pierwsza z nich przybliża kształtowanie się polskiej prasy muzycznej od momentu jej powstania – czyli od okresu zaborów. Ponadto Autorka opisuje dzieje tej grupy prasowej w okresie dwudziestolecia międzywojennego, w czasie II wojny światowej, okresie komunizmu i po transformacji ustrojowej w 1989 roku. W dalszej części tekstu Joanna Mikosz prezentuje definicję prasy muzycznej oraz dokonuje charakterystyki współczesnego rynku prasy polskiej, biorąc pod uwagę różne kryteria, takie jak: tematyka, rodzaj muzyki, odbiorca, funkcje, częstotliwość ukazywania się i nakład.
Etyka w pracy dziennikarza muzycznego
Authors: Milczarek Remigiusz
Published: April 2024

Autor skoncentrował swoje wystąpienie na problemach etycznych w codziennej pracy dziennikarza muzycznego. Jego zawartość była ściśle związana z recenzją muzyczną w prasie (opartą na przykładach z magazynu muzycznego „Metal Hammer”).
Specyfika pracy dziennikarza muzycznego w radiu publicznym
Authors: Stańczyk Piotr
Published: April 2024

Autor mówił o roli dziennikarza muzycznego i DJ-a w radiu publicznym. Podzielił swoje obowiązki na pięć kategorii: granie audycji DJ-skich, przygotowywanie programów autorskich, programów publicystycznych, prezentowanie bloków muzycznych oraz oprawę muzyczną.
Filmowa reprezentacja weryfikacji w środowisku dziennikarskim
Authors: Barczyk Agnieszka
Published: April 2024

Dziennikarstwo w Polsce Ludowej nadal pozostaje tematem słabo opracowanym teoretycznie. Weryfikacja, która miała miejsce podczas stanu wojennego, była jednym z najistotniejszych zjawisk w dziennikarskim świecie lat osiemdziesiątych. Filmowy obraz tego wydarzenia, które wstrząsnęło światem mediów i podzieliło środowisko dziennikarskie, można znaleźć w utworze Mirosława Gronowskiego: Weryfikacja.
Investigating the Impact of Launaea angustifolia Extract on the Reproduction Function of Female Rats
Authors: Ammari Aiman A. , Alhimaidi Ahmad R. , Amran Ramzi A. , Rady Ahmed
Published: April 2024

Background: The purpose of this study is to investigate the effects of Launaea angustifolia methanol extract on the reproductive organs of female rats through the use of chemical screening. Methods: A total of twenty-five female rats were separated into five distinct groups to be examined. The group that served as the control did not receive any dose, whereas the group that served as the negative control received DEMSO by oral gavage. Group 10 received 10 mg/kg body weight per day, Group 50 received 50 mg/kg body weight per day and Group 100 received 100 mg/kg body weight per day for a period of two weeks. Result: Despite the fact that the body weights of female rats rose during the course of this investigation, there were no significant variations between the groups after 14 days of dosing occurred. In the case of female rats, the body weights of the control group were found to be considerably greater (P less than 0.05) in all experimental days, with the exception of day 1 and day 3, when compared to the groups that received 50 and 100 mg. Although there was a discernible rise in the weight of the ovary in the control group in comparison to the group that was exposed to DMSO.
Alternative energy sources for transporting thermosensitive goods in autonomous refrigerated containers
Authors: Kiselev Igor' , Komissarov Sergey , Monastyrskiy Dmitriy
Published: April 2024

Purpose: to consider the main problems of transportation of temperature-sensitive cargoes in refrigerated containers (refcontainers). To show the possibilities of transportation optimization through the introduction of alternative energy sources. Methods: comparison of technical and economic indicators of diesel, hydrogen and hydrogen plants is carried out. The exergetic method of estimating the effect of replacing diesel fuel with LNG was applied. Results: the article defines the peculiarities of cargo transportation in containers with built-in refrigeration units — autonomous refcontainers. Classification of existing energy units for power supply of refcontainers is given. The design of an autonomous installation for power supply of refcontainers is described. Environmentally safe alternatives for providing autonomous power supply of refrigerating units of refrigeration containers are proposed. The advantages of autonomous power supply based on high-temperature fuel cells are presented. An autonomous power unit with liquefied natural gas (LNG) as fuel is described. The feasibility of utilization of cold from LNG regasification is analyzed in order to ensure the stability of refcontainer operation. The estimation of the expected effect from the use of alternative fuels for autonomous power supply is made. Practical significance: the obtained results can be used for modernization of low-capacity power plants used in refrigerated and other types of transport.
To assess the technical and operational condition of urban reinforced concrete bridges and overpasses
Authors: Shermuhamedov Ulugbek , Belyy Andrey , Sobirova Ma'mura , Kadirova Sharofat
Published: April 2024

To consider the issue of assessing the technical and operational condition of urban reinforced concrete bridges and overpasses. Study technical passports of about 300 reinforced concrete bridge structures in Tashkent. Analyze in detail and formulate the main technical and operational indicators (TEI) as criteria for assessing the technical condition of bridge structures in Tashkent. Methods: methods for assessing the technical condition of the city’s bridge park objects have been determined — absolute and relative. For this purpose their purposes are indicated. Results: the statistics were compiled on the basis of the bridge park of the city of Tashkent, carried out by the authors of a survey of 30 city bridge structures. Based on the results of the examination of selected bridge structures, it was established that the main damage to the spans and supports of reinforced concrete bridges and overpasses is caused, first of all, by the poor condition of waterproofing, expansion joints and lack of water water pipes. The main technical and operational indicators (TEI) are formulated as criteria for assessing the technical condition of bridge structures in Tashkent, such as “safety and traffic comfort”, “durability”, “load capacity”, “throughput”, and “maintainability”. Practical importance: taking into account the specifics of a large metropolis, managing the technical condition of bridge structures in Tashkent is an extremely responsible and complex task. For use in practical operation of reinforced concrete bridge structures as the most widespread objects of the city’s road transport infrastructure, a statistical analysis was performed. From a practical point of view, this information will make it possible with a sufficient degree of probability to ensure and maintain the specified regulatory (design) levels of reliability, safety and durability of bridge structures.
Train simulation model to take into account the influence of wind loads
Authors: Grebnev Ivan , Pudovikov Oleg
Published: April 2024

Objective: this article is devoted to the problem of regulation of fuel resources for train traction in the presence of variable factors affecting consumption. As an example, the wind-dependent section of the Privolzhskaya railway Pallasovka–Verkhniy Baskunchak was considered, using simulation modeling, the presence of the influence of variable factors on fuel consumption, which are often standard-setting. To propose a methodology for their practical accounting in locomotive depots. Methods: the article proposes a train simulation model to take into account the influence of wind loads. For this purpose, the traction electric drive of a diesel locomotive with direct-alternating current transmission was presented as a speed controller that maintains the movement of the train at a constant speed equal to the technical average. To determine fuel consumption in order to determine the reliability of the results obtained and the possibility of comparison with experimental statistical values, the electromechanical characteristics of the ED133 traction motor, the GS501 generator and the operational characteristics of the D49 diesel engine were used. Results: as a result of modeling the operation of the diesel locomotive power plant, the values of absolute and specific fuel consumption were obtained. The results obtained have a high degree of reliability, as evidenced by earlier statistical data. Practical significance: the results obtained once again demonstrated the influence of wind on train traction, and on wind-dependent sections of railways they are standard-forming. The considered model can be applied for the purpose of rationing the consumption of fuel and energy resources in the presence of variable factors affecting consumption.
Development of a methodology for forming a subsystem for monitoring and controlling the metro power supply network
Authors: Davydova Anastasiya , Kanaev Andrey
Published: April 2024

Objective: consider the development of modern concepts of IoT and Smart grid from the point of view of effective implementation on existing production facilities, in particular, on the metro power supply network. Show the need to develop a scientific and methodological apparatus for the formation of intelligent monitoring and control subsystems, taking into account the introduction of new developments into existing complexes. Determine the features of the metro power supply network and its monitoring and subsystems, indicating development paths taking into account existing new technologies. Develop a methodology for forming a

subsystem for monitoring and managing the metro power supply network. Methods: analysis of structures for constructing intelligent monitoring and control subsystems according to modern concepts; analysis of existing monitoring and control subsystems of the metro power supply network. When developing the methodology, semi-Markov models are used to simulate the functioning and recovery processes, and an empirical mode decomposition method is proposed for processing monitoring data. Results: a methodology has been developed for forming a subsystem for monitoring and controlling the metro power supply network. A model and analytical apparatus is proposed for modeling the processes of functioning and recovery and for carrying out work with diagnostic data. A list of method parameters has been generated. Practical importance: the proposed methodology for forming a subsystem for monitoring and controlling the power supply network makes it possible to substantiate the necessary composition, structure and requirements for diagnostic and control tools. This methodology can be applied in the development of new multi-parameter metro complexes, in the formation of justifications for modernization and sections of technical specifications and requirements.
Problems of diagnostics of modern diesel engines
Authors: Belyaev Andrey , Kononov Dmitriy , Krotov Sergey
Published: April 2024

Objective: to consider the issue of diagnostics of modern diesel engines, in particular vibration diagnostics. Consider modern strategies and methods based on vibroacoustic signals that allow you to track and diagnose diesel engine malfunctions, as well as an assessment of the working process in the engine. To determine which means of measuring vibration parameters and methods of processing vibration signals can be considered the most reliable and informative. Propose to make adjustments to the currently used methods of processing vibration signals. Methods: comparison of the effectiveness of vibration measurement tools and mathematical methods of vibration signal processing. Results: the necessity of choosing mathematical methods of vibration signal processing is indicated, both for individual components of a diesel locomotive engine and for evaluating the workflow. Modern mathematical methods, applied to vibration diagnostics, require updating, due to an increase in computing power, as well as due to the development of powerful signal processing methods. To increase the reliability of the comparison results, it is necessary to take into account the large variability of the components and processes of the diesel engine. The need for additional study of modern mathematical methods of vibration signal processing is revealed. Practical importance: the necessity of introducing more modern methods of vibration signal processing is shown, which will optimize the durability of the components’ design using long operating cycles, reduce maintenance costs, track the service life of the internal combustion engine during the operation of the locomotive, improve the monitoring and diagnostics systems of the locomotive engine. The presented methods of assessing the use of certain methods of vibration diagnostics for diesel locomotives can be recommended for practical use.
Interregional supply chain distribution management in the framework of interaction with artificial intelligence technologies
Authors: Kosheleva Tat'yana , Ksenofontova Tat'yana , Gulyaeva Ol'ga
Published: April 2024

Target: in the article, the authors reveal new approaches to managing logistics supply chains within the framework of the sixth technological order: the main structural elements of a modern infrastructure for managing logistics flows are presented, including a production complex equipped with industrial specialized 3D printers; warehouse complex in regions close to sources of raw materials and to regions of the largest volumes of orders; infrastructure of logistics regional distribution systems, including the transport component within all types of transport, including unmanned vehicles. Methods: the author’s view on management objects, supply flow management models within the framework of the formation of a new interregional spatial infrastructure is proposed; identified features of supply chain management within the framework of adding elements of remote and virtual reality technologies; the author’s approach to the interpretation of the concept of “supply chain management” is formulated within the framework of the formation of an expanded data system and ordered space with the aim of organizing interregional warehouses with the possibility of duplicating them in the region where the order is placed. Results: the authors have developed an algorithm for the functioning of a flow management model within the framework of a logistics system platform and a new spatial infrastructure using industrial specialized 3D printers under the control of artificial intelligence technologies, which make it possible to reproduce the necessary goods in the region where the order is made. Practical significance: in addition, the article reveals the principles of implementing the process of managing logistics flows; approaches to the classification of distribution types from the location of sources of raw materials within the processes of production of goods and intangible delivery of goods to the location of consumers are proposed; The prospects for the development of global supply chains are discussed using the example of a specific macroregion — Uzbekistan.
Mediação da informação digital
Authors: Assis Isabella Carolina Pongelupe , Paula Lorena Tavares de
Published: April 2024

Introdução: O avanço tecnológico e a revolução da informação digital contribuíram para a produção de documentos e informações digitais. Neste sentido, as bibliotecas atuam como instituições que auxiliam na interação e na mediação da informação, suprindo as necessidades informacionais do usuário e contribuindo para o acesso, uso e disseminação da informação. Neste cenário, indaga-se: como é estabelecida a mediação da informação digital na Biblioteca Nacional Digital do Brasil? Objetivo: Compreender como é estabelecida a mediação da informação digital na Biblioteca Nacional Digital do Brasil. Metodologia: Trata-se de uma abordagem qualitativa, onde o percurso metodológico será desenvolvido através de uma revisão bibliográfica em artigos, livros, bases de dados de comunicação científica, recuperando os conceitos de Bibliotecas Nacionais Digitais e Mediação da Informação Digital. Além disso, uma análise ao site da Biblioteca Nacional Digital a fim de identificar os elementos referente a mediação da informação. Resultados: Observou-se que a Biblioteca Nacional Digital utiliza para mediação da informação digital o catálogo online, metadados descritores em formato Dublin Core, catalogação em Marc21 e os canais nas redes sociais, tais como: Youtube, Instagram, Facebook, que informam os usuários e tiram dúvidas. Conclusão: As Bibliotecas Nacionais disponibilizam bibliotecas digitais que se tornam espaços de interação social, disseminando as informações nos ambientes virtuais. Essas informações podem ser acessadas através de suportes e ferramentas midiatizadas. Todas essas ações facilitam a disseminação e a recuperação da informação.
Antiarrhythmic Effect of SGLT-2 Inhibitors in high-degree AV Block Caused by Heart Failure: A Case Report
Authors: Putra Ngurah Agung Reza Satria Nugraha , Susila I Ketut
Published: April 2024

Highlights:
1. The antiarrhythmic effect of SGLT-2 inhibitors, particularly empagliflozin, is a very interesting topic to discuss further.
2. In patients with high degree AV block due to HF in rural areas, the use of SGLT-2 inhibitors is quite rare in Indonesia.
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Background: According to WHO's Top 10 Global Health Threats, non-communicable diseases such as heart failure contribute to more than 70% of all deaths worldwide. Several studies have shown that SGLT-2 inhibitors can considerably reduce HF. As research progresses, SGLT-2 inhibitors may lessen the risk of arrhythmias in HF patients.
Case Summary: A 57-year-old female with uncontrolled hypertension came to the ED after collapsing at home. The vital signs and physical examination are normal. The preliminary ECG showed a high degree AV Block with multiple multifocal PVC. Early laboratory revealed mild hypokalemia. The patient experienced a seizure the next day, and an ECG showed total AV block with a non-sustained VT episode with PVC R on T. Following critical cardiac care and stabilization, the patient underwent echocardiography, which showed mild MR and AR with a reduced ejection fraction (47.7%). Once the patient's condition has stabilized, the patient is given 1x10mg Empagliflozin PO.
Discussion: SGLT-2 inhibitors are beneficial in the treatment of heart failure and arrhythmia. SGLT-2 inhibitors have antiarrhythmic effects through a variety of pathways, such as lowering preload and afterload, inhibition of sodium-hydrogen exchange in myocardial cells, and suppression of the sympathetic nervous system.
Arpa Çeşitlerinin Çimlenme Döneminde Ozmotik Stres Toleransının Belirlenmesi
Authors: Özdemir Dirik Kübra , Erdem Mazlum , Saygılı İbrahim
Published: April 2024

Osmotik stres çimlenme döneminde kuraklık stresini stimüle ederek kuraklık toleransının ölçümünü sağlamaktadır. Bu araştırma ozmotik stres altında arpa çeşitlerinin çimlenme dönemindeki kuraklığa toleransının belirlenmesi amacıyla yürütülmüştür. Çalışmada 13’ü altı sıralı ve 23’ü iki sıralı olmak üzere 36 arpa çeşidi kullanılmıştır. Ozmotik stres polietilen glikol 6000 kullanılarak -3 bar ve -6 bar osmotik stres uygulanmış, stresin olmadığı uygulamada (kontrol) saf su kullanılmıştır. Araştırmanın yedinci gününde çimlenme oranı, kök uzunluğu ve sürgün uzunluğu belirlenmiştir. Çeşitlerin çimlenme oranları kontrole göre -3 bar ozmotik streste %5.7, -6 bar ozmotik streste ise %52.3 oranında önemli bir şekilde azalmıştır. Çeşitlerin kök uzunlukları -3 bar osmotik streste %14.4 artarken, -6 bar osmotik streste %56.1 azalmış, sürgün uzunlukları -3 bar osmotik streste %15.5 ve -6 bar osmotik streste %86.2 oranında azalmıştır. Genel ortalamada Kendal, Hasat, Dara, Yüksel, Etincel ve Epona çeşitlerinde en yüksek, Steptoe çeşidin de ise en düşük çimlenme oranı belirlenmiştir. Kök uzunluğu ve sürgün uzunluğu değerlerine göre Kral 97, Barış, Çetin 2000, Tarm 92, Sabribey ve Hasat çeşitlerinin osmotik strese daha toleranslı olduğu söylenebilir. Çeşitlerin kuraklık tolerans indeksleri incelenen üç özellikte de -6 bar osmotik streste -3 bar osmotik strese göre azalmıştır. -6 bar osmotik streste, en yüksek kuraklık tolerans indeksi, çimlenme oranında Kendal ve Dara (%86.7) çeşitlerinden, kök uzunluğunda Hasat (%98.1) çeşidinden, sürgün uzunluğundaEpona (%62.9) çeşidinden elde edilmiştir. Çimlenme döneminde kuraklık stresinin etkili olduğu bölgelerde, osmotik stres toleransı iyi olan çeşitlerin tarla denemelerine dahil edilmesi arpa üretimine katkı sağlayabilir.
MnO/ZnO:Zn Thin-Film Frequency Adaptive Heterostructure for Future Sustainable Memristive Systems
Authors: Neri-Espinoza Karen Ailed , Andraca-Adame José Alberto , Domínguez-Crespo Miguel Antonio , Gutiérrez-Galicia Francisco , Baca-Arroyo Roberto , Peña-Sierra Ramón
Published: April 2024

In the last years, advances in materials engineering based on adaptive electronics have found a new paradigm to optimize drawbacks in signal processing. A two-layer MnO/ZnO:Zn heterostructure envisioned for frequency adaptive electronic signal processing is synthesized by sputtering where the use of internal states allows reconfigurability to obtain new operating modes at different frequency input signals. An X-Ray Diffraction (XRD) is performed on each layer, MnO:Mn had a cubic and ZnO:Zn a hexagonal structure with preferential growth in [111] and [002] directions respectively. It is determined that the coupling in this heterojunction is compatible with a mismatch less 1 % due texture in each layer which implies a low number of defects. An electrical characterisation with an oscilloscope and signal generator was carried out to obtain the time-response signals and current-voltage (I-V) curves where no degradation is detected when changing from a range of frequencies (100 Hz – 1 MHz). An equivalent circuit is proposed to explain the effects in the interface. Finally, the MnO/ZnO:Zn heterojunction delivers states that are stable, repeatable, and reproducible and it demonstrates how the interaction of the materials can be used in adaptive device applications applying frequencies and internal states as to create new and innovative design schematics, reducing the numbers of components/connections in a system for future sustainable electronics.
Tools and Frameworks for Sustainable Business Model Innovation in the Hydrogen Context for German Steel, Cement, and Chemical Industries
Authors: Mais Franziska , Kolasch Hannes
Published: April 2024

In the decarbonization of the steel, cement, and chemical industry in Germany, green hydrogen is expected to play a crucial role. The utilization of green hydrogen in the production processes of said industries requires organizations to modify their business model, requiring sustainable business model innovation (SBMI). Numerous tools and frameworks that support organizations in the process of SBMI have been proposed in the literature in recent years. However, the applicability of these tools and frameworks for steel, cement, and chemical companies that intend to utilize green hydrogen to produce their goods remains unexplored. By conducting a systematic literature review on tools and frameworks for SBMI, a literature and practice review to identify and analyze existing green hydrogen projects of steel, cement, and chemical companies, and an evaluation of the identified tools and frameworks in an evaluation matrix, this paper aims to assess the suitability of SBMI tools and frameworks for steel, cement, and chemical companies that plan to use green hydrogen to produce their goods. Based on the evaluation, the Cambridge Business Model Innovation Process (CBMIP) was identified as the most suitable SBMI framework.
SBA-15 Loaded with Methylene Blue Dye for Efficient and Low-Cost Decontamination of Water under Visible Led Light
Authors: Chawraba Khaled , Medlej Hussein , Hamieh Malak , Lalevée Jacques , Hamieh Tayssir , Toufaily Joumana
Published: April 2024

The SBA-15 loaded with methylene blue was successfully prepared by sample adsorption of methylene blue in SBA-15 and is characterized by an XRD, SEM, FTIR, and BET. The photocatalytic activity for methyl orange (MO) degradation was investigated under visible light irradiation under LEDs. Experimental results demonstrate that the SBA-15-MB exhibited higher photocatalytic activity than SBA-15 under visible light irradiation. The degradation efficiency of MO (50 ppm) by SBA-15-MB could reach 80% within 180 min under 25W LED visible light. The photocatalytic activity of SBA-15 could be attributed to the excitation of methylene blue by visible light, the transfer of electrons from methylene blue to SBA-15, and the production of radicals at the surface of SBA-15.
Fractal Dimension of Generalized Rényian Entropy With Potential Fractal Dimension Applications to Smart Cities
Authors: A Mageed Ismail , Bhat Ashiq Hussain
Published: April 2024

The fractal dimension of is identified in this paper. More importantly, the undertaken research has shown how affects the Koch snowflake . The study has demonstrated the existence of negative values of (Koch snowflake), which connects to a considerable number of extremely intriguing mathematical and physical research areas. The information-theoretic impact on the Sierpiniski Gasket dimension , which corresponds to , was treated in a more fundamental way. Notably, the credibility of this current study adds to the existing kThe fractal dimension of is identified in this paper. More importantly, the undertaken research has shown how affects the Koch snowflake . The study has demonstrated the existence of negative values of (Koch snowflake), which connects to a considerable number of extremely intriguing mathematical and physical research areas. The information-theoretic impact on the Sierpiniski Gasket dimension , which corresponds to , was treated in a more fundamental way. Notably, the credibility of this current study adds to the existing knowledge for the information- theoretic fractal dimensions. On another applicative note, this paper offers some potential applications of fractal dimension to smart cities. The investigation of the threshold theorems for and in terms of the triad is part of the next study phase. Additionally, investigating the newly obtained 's corresponding arbitrary Sierpinski Gasket for the first time.applicative note, this paper offers some potential applications of fractal dimension to smart cities. The investigation of the threshold theorems for and in terms of the triad is part of the next study phase. Additionally, investigating the newly obtained 's corresponding arbitrary Sierpinski Gasket for the first time.