bluuebunny/crossref_metadata_2025 huggingface dataset:
Sustainable and Bio-based Food Packaging Design of Chinese Agricultural Products Under the “Internet Plus” Mindset
Authors: Tao Chen , Abd Razak Mohamed Razeef , Jingjing Li , Mingqian Peng
Published: October 2024

National identity is people's emotional attachment to the country, which is related to personal growth and success as well as the prosperity and stability of the country. The advent of the "Internet Plus" era marks a new ecological evolution in the networked society, significantly impacting personal national identity. On the one hand, the proactive, dynamic, autonomous, and connective nature of "Internet Plus" provides abundant resources and novel platforms to enhance individual national identity. On the other hand, its openness, compatibility, diversity, and anonymity can also challenge and influence personal perceptions of national belonging. This study delves into the nuanced interplay between national identity and the packaging design of Chinese agricultural products within the "Internet Plus" framework, exploring emerging trends, changes, and characteristics. This paper presents an in-depth literature assessment on the comprehensive methodology of Bio-based Food Packaging (B-FP) for food within the cyclical economy. It emphasizes three principal domains: (1) the function of B-FP within a circular goods layout method and material selection during the preproduction life cycle phase; (2) the contribution of B-FP to oval resource administration structures and the item's elimination life cycle phase; and (3) the optimum utilization of B-FP concerning the prioritization of end-of-life therapy. It scrutinizes the underlying issues and deep-seated causes, enriching the theoretical discourse on national identity. Through literature review and surveys, this paper firstly defines and clarifies the concepts of "Internet Plus," national identity, and the B-FP design of Chinese agricultural products. It then investigates the implications of "Internet Plus" for national identity within pastoral product B-FP design, examining its supportive role. Furthermore, survey data is analyzed to evaluate the impact of B-FP design on national identity from various aspects such as structure, visual appeal, and the absence of green design principles. Identifying key challenges and attributing them to factors such as brand competitiveness and rural revitalization strategies, the study ultimately seeks to formulate design strategies for agricultural product B-FP from a national identity perspective within the "Internet Plus" context.
IoT Attacks Detection Using Supervised Machine Learning Techniques
Authors: Aljabri Malak , Shaahid Afrah , Alnasser Fatima , Saleh Asalah , Alomari Dorieh , Aboulnour Menna , Al-Eidarous Walla , Althubaity Areej
Published: October 2024

In recent times, the growing significance of Internet of Things (IoT) devices in people's lives is undeniable, driven by their myriad benefits. However, these devices confront cybersecurity threats akin to traditional network devices, as they depend on networks for connectivity and synchronization. Artificial Intelligence (AI) techniques, specifically Machine Learning (ML) and Deep Learning (DL), have demonstrated notable reliability in the field of cyberattack detection. This study focuses on detecting Flood and Brute Force cyberattacks using Machine Learning (ML) and Deep Learning (DL) models. The primary emphasis lies in identifying traffic features that significantly detect these types of attacks. The experimental study incorporates eight models: Decision Tree (DT), K-Nearest Neighbor (KNN), Random Forest (RF), Support Vector Machines (SVM), Logistic Regression (LR), Gradient Boosting (GB), Naïve Bayes (NB), and Artificial Neural Network (ANN). Two sets of experiments were conducted, with the first set involving six features and the subsequent set, after feature selection, focusing on a reduced set of three features. The evaluation of the proposed model's efficiency and performance relied on metrics such as Accuracy, Precision, Recall, and F1-score. Remarkably, all proposed models exhibited high performance in both sets of experiments. However, the Gradient Boosting (GB) classifier suppressed others, attaining an impressive accuracy level of 95.94% and 95.28% in the sets with six features and three features, respectively. Doi: 10.28991/HIJ-2024-05-03-01 Full Text: PDF
Digital Skills of Human Resources: Exploratory Research of Innovations in Enterprises
Authors: Pham Thi Thanh Hong , Ngoc Tran Thi Bich , Cuong Duong Manh , Binh Dao Thanh , Si Lam Tran
Published: October 2024

Background: This study is conducted in the context of the remarkable development of digital technology that has a profound impact on many facets of life, including the comprehensive transformation of abilities and the working style of businesses and the workforce. To survive and develop in an emerging digital society and ever-changing digital environment, workers and business leaders need to equip themselves with the necessary digital skills to adapt to job requirements. Objective: This study explores the current status of the digital skills of human resources and its impact on the level of digital transformation readiness of Vietnamese enterprises. At the same time, the inverse relationship between digital skills and the digital divide was explored for the first time in Vietnam. Methodology: A secondary research method was used to summarize and analyze the results of surveys conducted by Vietnamese government agencies and previous studies to investigate the current status of digital skills of human resources and factors affecting the digital readiness of Vietnamese enterprises in the context of ongoing DX. Results: The results show that the digital skills of enterprise HR are weak, the level of DX readiness is low, and there is a reciprocal relationship between digital skills and the digital divide. The principal findings contribute to policy implications aimed at enhancing digital skills for the workforce and enterprises’ HR, and bridging the digital divide within the population in the long term. Doi: 10.28991/HIJ-2024-05-03-013 Full Text: PDF
Effect of Artificial Intelligence (AI) on Financial Decision-Making: Mediating Role of Financial Technologies (Fin-Tech)
Authors: Qatawneh Adel M. , Lutfi Abdalwali , Al Barrak Thamir
Published: October 2024

The main objective of the current study is to shed light on the mediating effect of financial technology (Fin-Tech) on the relationship between artificial intelligence (encompassing natural language processing (NLP), machine learning algorithms, computer vision, predictive analytics, robotic process automation (RPA), blockchain technology, and deep learning) and financial decision-making from the perspective of financial managers within Jordan's commercial banking sector. Realizing this objective required the use of quantitative methodology. A questionnaire was self-administered by 86 financial managers in the Jordanian banking sector. Primary data was analyzed using AMOS. Results of analysis confirmed that FinTech plays a significant mediating role between AI applications and financial decision-making. Machine learning was identified as the most impactful AI technique, facilitating more informed decisions through advanced data analysis and pattern recognition beyond the scope of traditional analysis methods. The novelty of current research is in the fact that it offers valuable insights into the intersection of AI and Fin-Tech within the Jordanian financial sector. It contributes to the understanding of how advanced AI techniques can enhance financial decision-making, emphasizing the importance of multidisciplinary expertise in the development of AI-driven financial systems. The findings have significant implications for both theoretical understanding and practical application in the finance industry. Doi: 10.28991/HIJ-2024-05-03-015 Full Text: PDF
Content Automation in Marketing Research: A Bibliometric Analysis using VOSviewer
Authors: Phuthong Thadathibesra , Thonglor Ratchamongkhon , Srisuksa Nontouch
Published: October 2024

Objectives: This study conducted a comprehensive assessment of content automation in marketing research using bibliometric analysis spanning 20 years from 2004 to 2024. The primary influential factors, topics, and areas of research were analyzed to determine future research paths. Methods/Analysis: Sample selection and data collection were conducted using the Scopus database. The initial dataset was adjusted by applying certain inclusion and exclusion criteria. The final dataset consisting of 149 articles in the RIS format was loaded into the VOSviewer program to perform a bibliometric analysis. Findings: The results revealed key findings, including the highest citation-counting papers, the most common research format, the research field, the year of publication, collaboration countries, the journal, prominent authors, popular themes, areas for further investigation, and the intellectual framework of current research on the topic. Novelty/ Improvement:Four areas were identified for future research: marketing automation as digital commerce content marketing, artificial intelligence for digital marketing transformation, automation and optimization for personalized advertising content, and automatic knowledge discovery. The temporal development of these issues was also examined to offer valuable insights into the changing focus of academic interest over time and establish a foundation for future investigations. Doi: 10.28991/HIJ-2024-05-03-019 Full Text: PDF
Integrating Intelligent Sensors for Safe UAV Distribution: Design and Evaluation of Ranging System
Authors: Jiang Yihu , Pang Xianhai , Zhang Zizi , Jing Hao , Wei Liqiang , Su Jingang , Zhang Peng
Published: October 2024

In our increasingly electrified society, electricity has become indispensable to both production and daily life. However, high-load electric energy transmission presents inherent safety risks. To ensure the secure transportation of electric energy, live work on distribution networks is essential. However, traditional live work techniques require a high level of dependence on worker experience, which frequently leads to inaccurate safety distances and degrades worker security. This study proposes the integration of Unmanned Aerial Vehicles (UAVs) with intelligent robot sensing technology to enhance safety and efficiency in live work. By accurately measuring safety distances, UAVs offer a promising solution to mitigate risks associated with high-voltage circuits. Comparative analysis between traditional and intelligent live work safety distance measurements reveals the two live works under the high voltage circuit were 92% and 96%, respectively, and the accuracy of the two live work safe distance measurements under the low voltage circuit was 84% and 99%, respectively. Results demonstrate that UAVs equipped with intelligent sensing technology achieve superior accuracy in safe ranging for live work, thereby ensuring stable energy transmission and safeguarding the lives of workers in distribution networks. Doi: 10.28991/HIJ-2024-05-03-04 Full Text: PDF
COMPARATIVE STUDY USING CFD OF COUNTER-CURRENT AND CO-CURRENT HYDROTREATING REACTORS USING JATROPHA CURCAS L VEGETABLE OIL
Authors: Vizguerra Morales Pablo , Mederos Fabian S.
Published: October 2024

In this work, mathematical modeling and CFD simulation of two countercurrent and cocurrent hydrotreatment reactors were carried out, validating the results with a drained bed reactor (TBR), a commercial CoMo/γ-Al2O3 catalyst was used, the material the raw material was Jatropha Curcas L vegetable oil. The operating conditions were temperature 380 ° C, pressure 8 MPag. The kinetic model that was used considered 13 reactions that involve processes of decarboxylation, decarbonization, hydrodeoxygenation and hydrocracking reactions for triolein and tristearin triglycerides. The CFD simulation was carried out in Fluent 18.2 in a transient state and in 3D, considering the standard κ - ε turbulence models, Eulerian multiphase model and porous medium model, it was shown that the countercurrent reactor has less pressure drop than the countercurrent, the conversion the countercurrent reactor has a greater conversion of reactants of 99%, the generation of products from the countercurrent reactor has higher concentrations than the cocurrent reactor, this is because it has more contact areas between phases in the reactor.
Perceptions and practices of L2 teachers in metacognitive oracy instruction: A longitudinal case study
Authors: Decorte Remy , Colognesi Stéphane , Dachet Dylan , Meunier Fanny
Published: October 2024

This embedded single-case study investigates four secondary school L2 teachers’ perceptions of metacognitive oracy instruction (MOI) over a two-year Design-Based Research (DBR) project and examines the effects of the project on their declared practices almost a year after its completion. Questionnaires, learner notes, and interviews to the double were used to collect data. Data analysis included descriptive statistics, content analysis, and thematic analysis. The results indicate that the DBR project had an overall positive effect on three of the four teachers’ perceptions of MOI. The study also found a link between the teachers’ perceptions of MOI and their self-reported implementation in practice. The findings highlight difficulties teachers face in developing metacognitive practices, even when they believe in their efficacy and intend to implement them. The study offers insights into language teachers’ adoption of metacognitive practices through DBR and can serve to inform teacher educators and researchers.
Granuloma anular y necrobiosis lipoidica en un paciente pediátrico con diabetes mellitus
Authors: Rosas Ana , Acosta María Agustina
Published: October 2024

Presentamos un paciente pediátrico con antecedentes de diabetes mellitus con mal control metabólico, que desarrolla granuloma anular diseminado y posteriormente lesiones de necrobiosis lipoídica. Ambas patologías mejoraron con el tratamiento con corticoesteroides tópicos y control de las cifras de glicemia, sin recurrencias hasta la fecha. Se incluye una revisión actualizada de la literatura sobre ambos temas.
Mastocitosis cutánea infantil
Authors: Esmeral Atehortúa Koretta , Llamas-Castellanos Bruny , Villa-Rosero Julián , Pacheco-Paredes Camila , Carrillo-Borja Mariana , Londoño-Daguer Valeria , Álvarez Pereira Erick
Published: October 2024

Antecedentes: La Mastocitosis Cutánea (MC) es una entidad poco frecuente en pediatría, sin embargo, es la más común de las presentaciones clínicas de las mastocitosis y se caracteriza por un cuadro clínico variable, en el cual se han identificado subtipos como: maculopapular, ampollosa, nodular, cutánea difusa, mastocitoma, entre otras.
Resumen del caso: Se discute el caso de un paciente de 4 meses de vida, quien ingresó al servicio de urgencias por fiebre y lesiones ampollosas generalizadas. Se realizó un enfoque diagnóstico inicial de sospecha de piel escaldada estafilocócica con la posterior realización de una biopsia cutánea, que identificó infiltrado dérmico y perivascular superficial de predominio mononuclear con mastocitos intersticiales, se enfoca como mastocitosis cutánea de tipo ampollosa y se inicia manejo integral.
Conclusiones: Siendo la mastocitosis cutánea una entidad poco frecuente en pediatría, es de gran importancia realizar un diagnóstico de manera oportuna, ya que la instauración tardía del tratamiento apropiado, podría conllevar al desarrollo de formas sistémicas que podrían poner en riesgo la vida del paciente. El tratamiento integral dependerá de la extensión de las lesiones y el compromiso de otros sistemas, variando desde manejo farmacológico hasta procedimientos quirúrgicos para desbridamiento de tejido necrótico.
OXYCINNAMIC ACIDS AS NOX4 INHIBITORS IN ALZHEIMER'S DISEASE THERAPY. AN EXPERIMENTAL STUDY
Authors: Pozdnyakov D.
Published: October 2024

Relevance. Alzheimer's disease is a terminal form of dementia with a complex pathogenesis in which NOX-dependent oxidative stress plays an ex-tremely important role. Aim of the study. To evaluate the influence of oxycinnamic acids on the alteration of NOX4 activity in brain tissue of animals with experimental Alz-heimer's disease. Material and methods. Alzheimer's disease was modeled in Wistar rats by injection of β-amyloid aggregates with amino acid sequence 1-42 into hippocampal tissue (CA1 segment). Oxycinnamic acids: caffeic acid, coumaric acid, ferulic acid and synapic acid were administered at a dose of 100 mg/kg, orally for 60 days after the Alzheimer's disease model. Ethylmethylhydroxypyridine succinate was used as a reference drug in a similar dosage and dosing mode. Changes in the concentration of active NOX4 isophrome, hydrogen peroxide as well as β-amyloid in brain tissue of rats were as-sessed after the indicated time period. Results. This study showed that the analyzed oxycinnamic acids were comparable with each other and the referent
STUDY OF THE EFFECT OF MODIFICATION OF THE STRUCTURE OF A NEW DERIVATIVE OF QUINAZOLINE–4(3H)–ONE ON FATTY ACID SYNTHASE (FAS) MYCOBACTERIUM
Authors: Starikova A. , Samotrueva M. , Zolotareva N , Tsibizova A. , Merezhkina D. , Ozerov A.
Published: October 2024

Relevance. Tuberculosis remains one of the main causes of disability and mortality from infectious diseases worldwide. The discovery of phenotypi-cally tolerant subpopulations of pathogen persisters has called into question the possibilities of known anti-tuberculosis drugs. In this connection, the search and development of new effective anti-tuberculosis drugs is an important direction in the development of modern pharmacology. Currently, it is relevant to consider substances of the quinazoline nature as antimicrobial agents that exhibit antitubercular activity. The aim of the work is computer modeling of the interaction of new derivatives of quinazoline–4(3H)–oh with NAD(H) in order to predict the possibility of influencing the fatty acid synthase (FAS) Mycobacterium. Material and methods. Modeling of intermolecular complexes in the interaction system of new derivatives of quinazoline-4(3H)–on – VMA–17–04 and VMA–13–05 with the oxidized form of NAD+ was carried out using the quantum chemical semi-empirical PM7 method implemented in the MOPAC 2016 program. Conclusions. The VMA–13–05 derivative, being in stable conformation I, forms an adduct with NAD+ having optimal energy characteristics. This inter-action can be considered as one of the stages of the biochemical pathway of suppressing the activity of FAS synthase, which takes part in the synthe-sis of mycolic acids and leads to the death of Mycobacterium cells.
CHEMICAL COMPOSITION, BIOLOGICAL ACTIVITY AND PROSPECTS FOR MEDICAL USE FRUITS ZIZIPHUS JUJUBA
Authors: Nikiforova Е. , Mizina Р. , Shevchenko А. , Nechaeva А. , Burlakova V. , Nikiforova Е. , Asaturov Y.
Published: October 2024

The development of herbal medicines continues to be an extremely important area of scientific research. One of the sources of such can be the fruits of the present Ziziphus jujuba Mill., which are increasingly becoming the object of research in relation to their chemical composition and various types of pharmacological activity. In this regard, the aim of the study was to analyze the current state of research in the field of chemical composition, bio-logical activity and prospects for the medical use of MNs. The conducted information and analytical search shows that phenolic compounds, triterpene acids and polysaccharides of jujube fruits are of the greatest scientific interest and applied value for medical use.
BIOCOLLECTION OF PHARMACEUTICAL PARASITIC STRAINS OF CLAVICEPS PURPUREA – BASE FOR SELECTION OF NEW LINES PRODUCING ERGOALKALOIDS IN VITRO
Authors: Volnin A. , Tsybulko N. , Savin P. , Myasnikova S , Bobyleva R
Published: October 2024

Relevance. Ergot Claviceps purpurea is a very important source of pharmaceutical raw materials (ergoalkaloids). Aim of the study – for biocollection maintenance two parasitic strains of Claviceps purpurea (Fries) Tulasne were reproduced by in planta cultivation on winter rye: ergotoxin A-6, ergotoxin VKM-F-2450-D. Material and methods. Spectrophotometric determination of total content of indole alkaloids (with the van Urk reagent) and qualitative-quantitative selective determination of the alkaloid composition by thin-layer chromatography (TLC) with densitometric scanning of chromatograms were used. Results. Maternal sclerotia contained from 0.6 to 1 g of alkaloids per 100 g of sample for VKM-F-2450-D, from 0.5 to 0.7 g per 100 g of sample for A-6. VKM-F-2450-D and A-6 contained from 30% to 40% of the sum of α-ergocryptine and ergocornine and approximately 20% of β-ergocryptine. New gen-eration sclerotia contained from 0.31 to 0.76 g of alkaloids per 100 g of sample for VKM-F-2450-D, from 0.21 to 0.62 g per 100 g of sample for A-6. VKM-F-2450-D and A-6 contained from 40% to 62% and from 21% to 66% of the sum of α-ergocryptine and ergocornine, from 13% to 22% and from 13% to 36% of β-ergocryptine respectively. Conclusion. Two stable lines (ergotoxin A-6-S, ergotoxin ВKM-F-2450-D-S) with in vitro biosynthesis of ergoalkaloids with purple pigmentations features were detected, isolated and subcultivated by morphological selection in axenic culture. Accumulation and retention of Claviceps genetic resources is very actual: biocollection of parasitic strains is a good reserve for selection of new saprophytic lines.
ANALYSIS OF THE RELATIONSHIP BETWEEN INDICATORS OF OXIDATIVE STRESS AND THE AMINO ACID PROFILE OF BLOOD PLASMA IN PSORIASIS
Authors: Kupriyanov S. , Shatrova Yu. , Sysakov D , Fedorova K. , Myakotina D. , Sinitsky A.
Published: October 2024

Introduction. Psoriasis is an autoimmune disease that affects the skin, has a number of systemic manifestations and is associated with the devel-opment of a number of somatic pathologies. Significant systemic metabolic features of psoriasis are changes in the pool of free amino acids and oxi-dative stress. The purpose of the study: analysis of markers of lipid peroxidation and oxidative modification of plasma proteins and peripheral mononuclear cells, the amino acid spectrum of blood plasma, in relation to each other and clinical signs of severity and duration of psoriasis, body mass index and blood pressure indicators. Material and methods. The study group included 45 patients with psoriasis vulgaris. The control group included 46 donors. Determination of the lev-els of products of lipid peroxidation and oxidative modification of proteins was carried out by spectrophotometric methods. Blood plasma amino acid levels were determined by capillary electrophoresis. Results. In patients with psoriasis, an increase in the concentrations of primary and secondary products of lipid peroxidation and the level of metal-catalyzed oxidative modification of proteins in blood plasma, a decrease in the concentrations of end products of lipid peroxidation in peripheral mono-nuclear cells were revealed. In the amino acid profile of the blood plasma of patients with psoriasis, an increase in the relative concentration of sulfur-containing amino acids, concentrations of phenylalanine, leucine, cysteine, and a decrease in the relative concentration of oxyaminoacids were re-vealed. Relationships between the levels of amino acids and markers of oxidative stress with the duration of the course of the disease or exacerbation, as well as the severity of psoriatic lesions of the skin, were not revealed. Cysteine levels in patients with psoriasis are positively correlated with body mass index and diastolic blood pressure; the relative content of oxyaminoacids in blood plasma negatively correlates with body mass index. Conclusions. Changes in the amino acid profile of blood plasma in psoriasis occur in parallel with oxidative stress and skin inflammation, but are as-sociated with excess body weight for cysteine and oxyaminoacids, which allows us to consider the levels of cysteine and oxyaminoacids as promising prognostic and diagnostic markers of comorbid pathology associated with psoriasis.
ANTIVIRAL ACTIVITY OF A BIOLOGICALLY ACTIVE ADDITIVE BASED ON THE EXTRACT OF ASPEN BARK IN RELATION TO THE SARS-COV-2 IN EXPERIMENTS IN VIVO
Authors: Burkova V. , Sergun V. , Ivanov A. , Pyankov O.
Published: October 2024

Purpose of the research. Study of antiviral activity, determination of a safe and effective dose of a dietary supplement based on aspen bark extract against the SARS-CoV-2 virus in a Syrian hamster model. Material and methods. The object of the study was a biologically active food supplement based on an extract of aspen bark (Populus tremula L.), containing a concentrated aqueous extract of aspen bark and dihydroquercetin. We used a strain of coronavirus homologous to the early strain of hu-man SARS-CoV-2, Wuhan-Hu-1, obtained from the State Collection of Viral Infections and Rickettsiosis of the FBRI SRC VB «Vector» of Rospotrebnadzor. The study of antiviral activity was carried out on Syrian hamsters (Mesocricetus auratus) obtained from the nursery of laboratory animals of the FBRI SRC VB «Vector» of Rospotrebnadzor, according to the following parameters: the amount of virus RNA (viral load) and the infectious titer of the virus in the tissues of the lungs and nasal cavity. Results. It was established that under the indicated conditions of therapy, an effective safe daily dose of the drug based on aspen bark extract is a dose of 2000 mg/kg – on the fourth day after infection, virus replication on the nasal mucosa of infected animals significantly decreased by 3 times and the infectious titer of the virus – by 43 times. With an increase in the daily dose to 4000 mg / kg, signs of a toxic effect were observed. The min-imum therapeutic daily dosage of the drug in the early period after infection with respect to SARS-CoV-2 was determined - at a daily dose of 250 mg/kg, the drug significantly reduced the viral load in the tissues of the nasal cavity by 6.6 times and the infectious titer by 12.5 times. Conclusions. As a result of in vivo studies, it has been shown that a biologically active food supplement based on aspen bark extract has antiviral ac-tivity against the SARS-CoV-2 virus.
INFLUENCE OF RHAPONTICUM UNIFLORUM AND SERRATULA CENTAUROIDES DRY EXTRACTS ON THE CONDITIONAL REACTIONS DEVELOPMENT WITH NEGATIVE REINFORCEMENT IN WHITE RATS
Authors: Markova K. , Razuvaeva Ya. , Toropova A. , Olennikov D.
Published: October 2024

The study purpose: to evaluate the effect of the Rhaponticum uniflorum and Serratula centauroides dry extracts on the development of conditioned reactions with negative reinforcement in white rats. Materials and research methods. The studies were conducted on Wistar white rats. Dry extracts of R. uniflorum and S. centauroides in doses of 50, 100 and 200 mg/kg were administered per os to animals of the experimental groups. In the first series of experiments, the effect of the studied extracts on the development of conditional reactions of visual differentiation and active avoidance in intact animals was evaluated; in the second series – on the formation and preservation of the conditional reaction of passive avoidance against the background of acute hypoxia. Research results. It was found that R. uniflorum (at doses of 50 and 200 mg/kg) and S. centauroides (at doses of 100 and 200 mg/kg) extracts con-tribute to the acceleration of conditional reactions of visual differentiation production by 20-23% compared with the control. The most rapid formation in the section was observed in animals receiving R. uniflorum extract at a dose of 100 mg/kg. Against the background of the introduction of S. centauroid-es extract in doses of 100 and 200 mg/kg, the number of samples spent on the formation of active avoidance decreased by 21 and 23%, R. uniflorum extract in similar doses – by 27 and 25%, respectively, compared with the control. In animals treated with extract R. uniflorum at a dose of 200 mg/kg and S. centauroides extract at doses of 100 and 200 mg/kg, 1 hour after hypoxic exposure, conditional reaction of passive avoidance persisted in 83-92%, on day 3 – in 58% of animals. Against the background of the introduction of R. uniflorum extract at a dose of 100 mg/kg, active avoidance was formed in 100% of animals, and was preserved after 24 and 72 hours in 83 and 67% of animals. Conclusion. R. uniflorum and S. centauroides extracts contribute to the acceleration of the development of conditioned reflexes with negative rein-forcement both in intact animals and against the background of a hypoxic state. The most pronounced nootropic effect of the studied extracts is shown at a dose of 100 mg/kg.
COMBINED METHOD FOR QUALITY CONTROL OF COLLOIDAL SILVER
Authors: Kolyabina E , Maksimova T.
Published: October 2024

Relevance. Silver nanoparticles are interesting as an alternative to antibiotics and as their carrier. Bioavailability of silver is affected by particle size, morphology, and concentration. The studied combination of methods is promising for the rapid detection of technological defects in production and the fight against counterfeiting. Objective. To develop a combined method for quality control of silver-containing colloidal solutions. This method in addition to elemental determination will consider the disperse characteristics of particles. Material and methods. Four silver-containing preparations were studied: ProtargolLor (P.J.S.C. “Pharmstandard”, Kursk); Argitos colloidal silver (“Nanosphere”, Russia), Argent Colloidal (Nutri expert, France); Granions d’Argent (Laboratoire des Granions Le Mercator, France). The study was carried out using Energy dispersive spectrometer Shimadzu EDX-7000 (Japan), Laser hydrodynamic particle size analyzer Zetasizer (Malvern Instruments, UK). Results. In this article we propose the use of a combined method for the quality control of silver-containing preparations. The express X-ray fluorescence method is supplemented by the method of dynamic laser light scattering. This combined method allows to determine the composition and size spectra of the particles of the studied samples. It will significantly reduce costs and protect the laborants from the toxic effects of reagents used for mineralization. Conclusion. The combination of disperse and elemental analysis methods is promising for quality control of silver-containing pharmaceuticals. This technology will detect counterfeit and manufacturing defects.
Effects of English Film Subtitle on the Vocabulary Level of Grade-11 Students in a private school in Sipocot, Camarines Sur
Authors: Monida Dimple C. , Bandojo Melve D. , Panopio Aira G. , Rili Juan Jose V. , Valleno Andrew F. , Mirate Theodoro Jan , Ocampo Darrel M.
Published: October 2024

This study aimed to determine the effects of reading subtitles on the vocabulary level of Grade-11 students in a private school in Sipocot, Camarines Sur. The study employed a pre-experimental design with static group comparison and descriptive correlational methods. The data gathering tools used were a survey questionnaire and a researcher-made test. The test was used to assess the vocabulary level of the respondents. The study found that there was a significant difference in the language proficiency of respondents who read subtitles and those who did not, in terms of vocabulary, form, meaning, and use. The respondents who read subtitles demonstrated a higher level of language proficiency in vocabulary compared to those who did not read subtitles. The study also found that there was no significant relationship between the extent of reading subtitles and vocabulary level in terms of form and meaning, but there was a significant relationship in terms of use only. Based on the findings, the study concluded that reading subtitles while watching English films can expand vocabulary level for further purposes.
Hanimal: Inovasi Website Pemanggilan Dokter Hewan untuk Edukasi Masyarakat dan Penanganan Kesehatan Hewan
Authors: Rohim Abdul , Sriasih Made , Ilham Moh. Rozi Fatwa , Adawiyah Rabiatul , Ulya Uswatul , Septiyawan Pradino
Published: October 2024

Kesehatan hewan mencakup perlindungan sumber daya hewan, lingkungan, kesejahteraan hewan, dan ketahanan pangan asal hewan. Gangguan kesehatan hewan yang muncul saat ini dapat mempengaruhi kesehatan manusia, baik melalui konsumsi maupun interaksi langsung. Oleh karena itu, menjaga kesehatan hewan menjadi sangat penting, baik secara mandiri maupun dengan bantuan dokter hewan. Dokter hewan adalah garda terdepan dalam pelayanan kesehatan hewan, namun mereka menghadapi tantangan dalam penyampaian informasi yang efektif jika hanya menggunakan media WhatsApp. WhatsApp memungkinkan komunikasi cepat tetapi memiliki keterbatasan dalam penyampaian informasi secara terstruktur dan komprehensif. Banyak pemilik hewan mengalami kesulitan membawa hewan mereka ke dokter hewan karena masalah seperti sulitnya membuat janji, kurangnya pemahaman, dan jarak yang jauh. Survei menunjukkan bahwa 62% pemilik hewan tidak tahu apa yang harus dilakukan ketika hewan mereka sakit. Dr. Munawaroh dari PDHI menyatakan bahwa penyebaran dokter hewan di Indonesia masih kurang merata, lebih banyak di kota dibandingkan di desa, dengan jumlah dokter hewan yang tidak mencapai setengah dari yang diperlukan. Menanggapi masalah ini, Tim mengembangkan Hanimal, sebuah produk pelayanan dokter hewan berbasis website yang menawarkan jasa dokter hewan dengan harga terjangkau dan informasi lengkap serta berita terbaru melalui kerjasama dengan berbagai stakeholder, untuk meningkatkan akses dan efisiensi layanan kesehatan hewan.
Improving the Quality of Human Resources in Villages Through Empowerment and Managerial Training Programs
Authors: Lubis Fatimah Malini , Rustiawan Indra , Siswanto Agus , Feriyadin Feriyadin , Setiawan Roy
Published: October 2024

This Community Service (PKM) activity aims to improve the quality of human resources in the village through empowerment programs and managerial training that are carried out online. This training focuses on three main aspects: leadership, financial management, and natural resource management. Thirty-five village officials and MSME managers participated in this training through the Zoom application for four sessions. The methods include material presentations, interactive discussions, case simulations, and post-training assistance via WhatsApp and follow-up webinars. The evaluation results showed that 75% of the participants experienced an improvement in managerial skills, especially in decision-making and financial management. In addition, participants' satisfaction with the training reached 85%, with a positive response to how the material was delivered and the relevance of the topic to the needs of the village community. Constraints such as limited internet access are overcome by providing session recordings and modules that can be accessed offline. This program fills the gap from previous research by focusing on economic aspects, leadership capacity building, and sustainable management of natural resources. The online approach in this training has proven to be effective in answering the needs of village communities and bridging geographical and technological limitations, which supports more competitive village development
Efforts to Improve RA Learners' Understanding of the Solar System Through Interactive Learning Media at Sholawat Islamic Boarding School
Authors: Septianto Tri , Kusbandono Hendrik , Sumafta Ikhwan Baidlowi , Muniruddin Agus , Wardani Dirajati Kusuma , Annisya Annisya
Published: October 2024

This community service aims to improve the understanding of students at RA Pondok Sholawat, Caruban, Madiun, East Java, about the Solar System through interactive learning media. Based on the initial observations, it was found that traditional learning methods cannot attract interest and improve students' understanding optimally. To overcome this problem, an intervention was carried out in the form of a grant for a set of touchscreen laptops and training teachers on using interactive learning media. The results showed an increase in the enthusiasm and involvement of students in the learning process and an increase in teacher competence in utilizing technology as a learning tool. This program created a more pleasant and effective learning atmosphere and positively impacted the quality of learning at RA Pondok Sholawat. Interactive learning media is expected to be an innovative model that can be applied in other educational institutions to improve students' understanding of scientific concepts from an early age.
MELHORIAS SUPERFICIAIS EM ESTRADAS DE TERRA
Authors: PAIVA CASSIO EDUARDO LIMA DE , PEDRAZZI THAYSE BALAROTTI , JOAQUIM AMARO GABRIEL
Published: October 2024

Este artigo apresenta a melhoria no acabamento da camada superficial de estrada de terra, com solos finos laterítico e não laterítico, através da superfície do leito existente tratado com adequados teores de cimento ou cal e acrescida da cravação de partículas granulares (com dimensões inferiores a 9,5 mm), antes da compactação final de acabamento e da cura, para melhoria das condições de rolamento e aderência. Através de extenso programa de ensaios de laboratório, foi obtido que com o emprego de 4% de cimento ou 8% de cal aos solos finos laterítico (LG') e não-laterítico (NG'), compactados nas energias AASHTO normal e intermediária, respectivamente, as misturas alcançaram, simultaneamente, RCS = 1,2 MPa, ISC = 20%, expansão = 1% e PMI = 0% aos 7 dias de cura; atendendo às especificações brasileiras para revestimento primário granular de estradas não pavimentadas e de solo melhorado com cimento e, adicionalmente, tolerância igual a zero para a erosão à ação da água. Utilizar agregados grossos de fresado asfáltico (com dimensões entre 9,5 mm e 4,8 mm), como tratamento primário por agulhamento, permite uma irregularidade mínima na superfície e é solução promissora para ser aplicada como nova fonte de aproveitamento do fresado armazenado em pilhas, que pode ser obtido gratuitamente pelos municípios de pequenas cidades.
ESTUDO DA VARIAÇÃO DO PH AO LONGO DO TEMPO EM DOIS SOLOS DO DISTRITO FEDERAL MELHORADOS COM CAL
Authors: FERNANDES PAULO COSTA , PAULA GISANDRA FARIA DE , TEIXEIRA DAN IMBROISI BRANT , SILVA RAFAEL CERQUEIRA
Published: October 2024

A formação mineralógica de latossolos, geralmente ácidos, são propícios para reagirem quimicamente com materiais básicos, como a cal, gerando novos minerais que melhoram as suas propriedades mecânicas e podem compor as subcamadas dos pavimentos flexíveis. Neste estudo, foi observada, em laboratório, a variação do potencial hidrogeniônico (pH) ao longo do tempo (1 a 200/243 dias), em H2O e em KCl, de duas amostras de latossolos de regiões distintas do Distrito Federal, com 3% (S-2) e 5% (S-1) de cal adicionada. Verificou-se em ambas as amostras que a transição do pH passando pelo ponto de carga zero (PCZ) ocorreu em datas semelhantes (60 dias). O S-2, a partir do 60º dia, passou a ser um solo com capacidade de troca catiônica, enquanto o S-1 passou a ter a capacidade de troca aniônica. Verificou-se também uma tendência de diminuição no valor de pH com o passar do tempo para ambas as amostras, indicando uma provável reação química com os minerais no interior das agregações. Tal redução pode estar associada a reações químicas de cimentação causada pelos silicatos de cálcio hidratado ou aluminato de cálcio hidratado. Por fim, pela simplicidade, baixo custo e rapidez, sugere-se a adoção do ensaio de pH no controle de execução de obras em que o solo seja melhorado ou estabilizado com cal.
INFLUÊNCIA DO USO DE FIBRA DE POLIPROPILENO NO DESEMPENHO MECÂNICO DA BRITA GRADUADA TRATADA COM CIMENTO
Authors: BACELAR FELIPE SIMÕES , ALBUQUERQUE FERNANDO SILVA
Published: October 2024

Uma das principais soluções de pavimentação para alto volume de cargas de tráfego nas rodovias é a utilização de base ou sub-base de materiais cimentados, entre eles, a Brita Graduada Tratada com Cimento (BGTC). Essa mistura fornece ao pavimento aumento da rigidez, contudo, como desvantagem, apresenta ruptura frágil e prematura por fadiga, ocasionando trincamentos e elevadas deformações, com danos à estrutura do pavimento. Isso acontece, principalmente, em razão da sua baixa tenacidade e resistência à tração, ocasionando processo de micro fissuração na sua estrutura interna. Em vista disso, esta pesquisa analisou o efeito nas propriedades mecânicas da BGTC a partir da inserção de fibras de polipropileno (comercialmente: Ultimax -monofilamento individual) e comparou com a mistura padrão (sem fibra), avaliando os parâmetros resistivos, como resistência à tração, tenacidade, resistência a compressão e módulo de elasticidade. De acordo com os resultados obtidos nesta pesquisa, obteve-se melhoria no desempenho mecânico da BGTC com a inserção de fibras. Os ganhos nos parâmetros de resistência à tração foram de 38% e tenacidade de 1189%, ambos em comparação com a BGTC padrão sem fibras. Além disso, ocorreu redução da rigidez, evidenciada pela redução nos módulos de elasticidade, no entanto sem que houvesse perda na resistência a compressão ou tração do material. Esses parâmetros resistivos são fatores fundamentais no dimensionamento de pavimentos semirrígidos construídos com BGTC. Com isso, ressalta-se que é possível obter melhoras importantes no desempenho de pavimentos que utilizem BGTC com fibras, com possibilidades de ampliar a durabilidade da estrutura.
ANÁLISE DA DENSIFICAÇÃO DE MISTURAS ASFÁLTICAS NO COMPACTADOR GIRATÓRIO SUPERPAVE EM FUNÇÃO DA CURVA GRANULOMÉTRICA E DA ESPESSURA DA CAMADA
Authors: THIEL DOUGLAS ANTÔNIO , SILVA ALLAN MONTEIRO , OSTROVSKI ANA CAROLINA , RAFFLER ANDREIA
Published: October 2024

As misturas de concreto asfáltico usinado a quente são amplamente utilizadas no Brasil para a construção de pavimentos. Para a execução destes revestimentos, normas consagradas limitam a espessura das camadas em função do tamanho nominal máximo (TNM) das curvas granulométricas das misturas. O principal objetivo destas restrições é evitar problemas de compactação em campo. Os baixos níveis de compactação das misturas em função do elevado volume de vazios pode gerar defeitos precoces nos pavimentos, como fadiga e deformação permanente. Para efeitos de análise do comportamento de densificação das misturas, o Departamento Nacional de Infraestrutura em Transportes (DNIT) publicou a norma 426/2020, na qual se utiliza o compactador giratório Superpave para monitorar o ganho de densidade de misturas asfálticas. Muito embora estudos já tenham sido conduzidos na busca de correlacionar parâmetros de densificação com o surgimento de defeitos precoces nos pavimentos, carecem investigações acerca do comportamento de densificação das misturas asfálticas em função da granulometria e do TNM. Assim, o objetivo desta pesquisa é avaliar como as misturas asfálticas se densificam em função da curva granulométrica, do TNM e da espessura da camada. Para isso, amostras foram submetidas à compactação no compactador giratório Superpave até o número de giros de 250. Avaliou-se a densificação por meio do percentual da densidade máxima medida atingida em cada giro. Observou-se que o tanto o TNM quanto a granulometria da mistura exercem influência no comportamento de densificação. Notou-se também que as especificações de espessura analisadas se mostraram insuficientes para garantir os parâmetros volumétricos esperados para a mistura.
ANÁLISE DE CONCRETO ASFÁLTICO ESTOCÁVEL PARA USO EM PAVIMENTOS RODOVIÁRIOS
Authors: MOIZINHO ARTHUR HENRIQUE , FIALHO KÁSSIO GOMES , Moizinho Joel Carlos
Published: October 2024

A pesquisa buscou avaliar a composição e as características físicas e mecânicas de um concreto asfáltico estocável a frio – CAE (indicado pelo fabricante para ser empregado em operações tapa buraco). Foram realizados ensaios visando a retroanálise da composição da mistura por meio da extração do ligante asfáltico, determinando-se a granulometria e porcentagem de ligante empregado. Para conhecimento das características volumétricas, estabilidade e resistência à tração diametral foram moldados 33 corpos de provas, seguindo a metodologia Marshall. A mistura CAE apresentou granulometria próxima a faixa C, com diâmetro máximo de 4,75mm e teor de ligante em torno de 5,5%. Os resultados de estabilidade Marshall não atenderam aos parâmetros estabelecidos pela norma DNIT 031:2006 – ES, sendo 33,5% inferior aos esperados para um concreto asfáltico. Com relação a resistência à tração por compressão diametral, não foi atendido o valor mínimo de 0,65 MPa, recomendado pela citada especificação. A mistura pesquisada apresentou resistência à tração média de 0,07 MPa e 0,08 MPa, respectivamente, para zero (0) e noventa (90) dias de cura ao ar livre, o que representa apenas 12,3 % do valor mínimo de referência. O Concreto Asfáltico Estocável estudado não apresentou requisitos mínimos exigidos para serviço de pavimentação. A pouca influência do tempo de cura nos resultados obtidos para resistência à tração diametral, sugere uma inadequação na dosagem do aditivo retardador de pega e questionamentos, se este deixará de agir após a compactação. Portanto, há necessidade de se estudar com mais rigor as misturas do tipo CAE, pois esta não se comporta como um concreto asfáltico convencional de acordo com a metodologia Marshall, como prometem o fabricante, mesmo para serviços de tapa buraco.
O USO DO RECICLADO DE PAVIMENTO ASFÁLTICO (RPA) NA ESTABILIZAÇÃO DE CAMADAS GEOTECNICAS DE PAVIMENTOS
Authors: LIMA CAROLINE DIAS AMANCIO DE , SEWAYBRICKER JOÃO PAULO ARRUDA
Published: October 2024

A pavimentação é um processo que consome consideráveis recursos naturais, gera resíduos significativos e amplifica as emissões de gases de efeito estufa. A inserção de Reciclado de Pavimento Asfáltico (RPA) nas camadas de base e sub-base surge como uma alternativa sustentável, com potencial para reduzir custos e diminuir a necessidade de novos materiais. No contexto brasileiro, apesar das iniciativas promovidas por órgãos como o Departamento Nacional de Infraestrutura de Transportes (DNIT), ainda existe uma carência de referências quanto à utilização do RPA. Este, por sua vez, representa uma alternativa capaz de substituir agregados e aprimorar as propriedades, por meio do processo conhecido como estabilização granulométrica, sendo sua aplicação guiada por aspectos econômicos, logísticos e qualitativos da mistura. O desempenho adequado das estruturas de pavimentação está diretamente ligado à avaliação das propriedades mecânicas dos materiais constituintes, tais como a densidade, umidade ideal, Índice de Suporte Califórnia (ISC), permeabilidade, módulo de resiliência (MR) e deformação permanente (DP). O comportamento das misturas é influenciado pela teor de RPA empregado, bem como pelas características mecânicas do próprio RPA e do solo ou agregado utilizados. Embora as pesquisas destaquem os benefícios da incorporação do RPA, existe uma demanda por padronizações técnicas mais sólidas e por dados adicionais no contexto brasileiro em relação à sua aplicação. Portanto, o presente artigo tem como objetivo contribuir ao abordar de forma resumida as informações referentes a normas nacionais, custos, melhores práticas, experiências internacionais e estudos correlatos acerca da utilização do RPA nas camadas subjacentes ao revestimento.