bluuebunny/crossref_metadata_2025 huggingface dataset:
Modulation of Motor Cortical Inhibition and Facilitation by Touch Sensation from the Glabrous Skin of the Human Hand
Authors: Bao Shancheng , Wang Yiyu , Escalante Yori R. , Li Yue , Lei Yuming
Published: March 2024

Touch sensation from the glabrous skin of the hand is essential for precisely controlling dexterous movements, yet the neural mechanisms by which tactile inputs influence motor circuits remain largely unexplored. By pairing air-puff tactile stimulation on the hand's glabrous skin with transcranial magnetic stimulation (TMS) over the primary motor cortex (M1), we examined the effects of tactile stimuli from single or multiple fingers on corticospinal excitability and M1's intracortical circuits. Our results showed that when we targeted the hand's first dorsal interosseous (FDI) muscle with TMS, homotopic (index finger) tactile stimulation, regardless of its point (fingertip or base), reduced corticospinal excitability. Conversely, heterotopic (ring finger) tactile stimulation had no such effect. Notably, stimulating all five fingers simultaneously led to a more pronounced decrease in corticospinal excitability than stimulating individual fingers. Furthermore, tactile stimulation significantly increased intracortical facilitation (ICF) and decreased long-interval intracortical inhibition (LICI) but did not affect short-interval intracortical inhibition (SICI). Considering the significant role of the primary somatosensory cortex (S1) in tactile processing, we also examined the effects of downregulating S1 excitability via continuous theta burst stimulation (cTBS) on tactile–motor interactions. Following cTBS, the inhibitory influence of tactile inputs on corticospinal excitability was diminished. Our findings highlight the spatial specificity of tactile inputs in influencing corticospinal excitability. Moreover, we suggest that tactile inputs distinctly modulate M1's excitatory and inhibitory pathways, with S1 being crucial in facilitating tactile–motor integration.
Find (and Remember) the Odd One Out: The Effect of Categorical Distinctiveness on Recognition Memory
Authors: Kotov Alexey , Aslanov Ivan , Kotova Tatyana
Published: March 2024

How does the relationship between the categorical membership of a target object and its surrounding context affect the memorization of the target object? We conducted four experiments to examine how categorical distinctiveness is related to memory. During the categorical discrimination stage, participants searched for a target to be remembered among five distractor images belonging to another category. In the low categorical distinctiveness condition, the target image was surrounded by perceptually similar images from the same superordinate category (e.g., a cat among dogs); in the high categorical distinctiveness condition, it was surrounded by dissimilar objects from another superordinate category (e.g., a cat among chairs). Participants also performed a recognition test. We expected an increase in the number of hits and false alarms in the recognition task for objects discriminated in the low categorical distinctiveness condition. This hypothesis was confirmed in Experiments 1 and 4, and the effect also partly remained in Experiments 2 and 3 (when we manipulated the memorization time), affecting only hits or only false alarms, respectively. Moreover, in Experiment 2, in which memorization was incidental, memorization among low-distinguishability objects was more accurate, which could indicate the advantages that categorical knowledge offers in such a memorization paradigm. This indicates the influence of categorical knowledge on the memorization and recognition of objects.
Analisis Sistem Kebakaran Aktif dan Sarana Penyelamatan Jiwa di Rumah Sakit X Kota Palembang Pada Tahun 2022
Authors: Pasmalia Ines
Published: March 2024

Kata kunci: Rumah Sakit, Kebakaran, Sistem Penanggulangan Kebakaran, Sistem Kebakaran Aktif, Sarana Penyelamatan Jiwa
Pemberdayaan Kelompok Pendukung ASI di Wilayah Kerja Puskesmas
Authors: Siregar Afriyana , Hartati Yuli , Meilina Ayu
Published: March 2024

Abstract

The first two years of human life are critical to form the foundation of optimal growth, development and health in the long term. It is therefore very important to ensure that children aged 0-2 years get optimal nutritional care.

The lack of exclusive breastfeeding coverage is influenced by several things, especially the very limited number of breastfeeding counselors, the lack of optimal educational activities, socialization, advocacy and campaigns related to breastfeeding and the lack of optimal development of breastfeeding support groups (Astika, 2012). Therefore, to increase the scope of exclusive breastfeeding in the working area of the Taman Baca Health Center, a Breastfeeding Support Group (KP-ASI) was formed by empowering the surrounding community. The lowest exclusive breastfeeding coverage in Palembang city is still low, to increase exclusive breastfeeding coverage can be done by changing the knowledge and attitudes of mothers in exclusive breastfeeding for breastfeeding mothers. KP-ASI is a form of community empowerment in this case cadres who assist health workers (nutritionists) in delivering information related to exclusive breastfeeding and motivating pregnant women and lactating mothers to breastfeed their babies up to a minimum of 6-24 months.

The Breastfeeding Support Group (KP-ASI) is a group formed by health care facilities and the community to support pregnant women, new mothers and breastfeeding mothers. The implementation of training for ASI support groups (posyandu cadres) has not been implemented so that training activities are needed to assist posyandu cadres in providing skills and seeing changes in cadres' attitudes to do their duties to help the community related to health information, understanding in mentoring breastfeeding mothers so that the exclusive breastfeeding target is achieved.

 

Keywords: Breastfeeding, support groups, babies
Paternal depression as an unrecognizable symptom by public policies and mental health
Authors: Patricio Solange Frid
Published: March 2024

This article presents recent discussions that point to typical symptoms of paternal depression, which compromise the mental health of men and those around them. But first, we problematize, in just one time, the place of man in contemporary times and the construction of naturalistic models of masculine, which imprison him in a restrictive and non-creative way. Then, we review recent studies on paternal depression, which point to the complex aspects that involve the dynamics of the marital, parental and relational relationship. Finally, we discuss directions for public policy actions that privilege men's mental health, particularly during parenting
An investigation of the corrosion rate of Mg alloys in Hank’s solution
Authors: Silva TF , e T-Cury, PL C d , Tomachuk CR
Published: March 2024

Magnesium alloys can be produced and formed using different techniques (casting, rolling, extrusion). Using the induction casting technique, magnesium alloys with biodegradable properties, good biocompatibility, and satisfactory mechanical properties are obtained, which are important to avoid the second surgical intervention to remove the implant.1 In addition, the implant material must have bioactivity, allowing better bone anchorage and favoring the growth of bone tissue in its structure. The dimensional stability of the magnesium alloys is highly important to not collapse prematurely during regeneration.2 The incorporation of alloying elements in magnesium promotes higher mechanical strength and improves corrosion resistance. In this work, two magnesium alloys, Mg-3.3Gd-0.2Zn-0.4Zr (wt%) (GK30) and Mg3.4Dy-0.2Zn-0.4Zr (wt%) (DK30), with different heat treatment conditions, were evaluated in Hank's solution, which simulates body fluids. The heat treatment conditions were selected according to the Group's previous results. Thus, alloy DK30 was treated at 180ºC for 60 h and 250ºC for 30 h, and alloy GK30, 180ºC for 100 h and 250ºC for 60 h. Hydrogen evolution and mass loss tests were carried out to determine the corrosion rate
National Maritime Scientific Interests of Ukraine: from Origins to Prospects
Authors:   State Institution “Scientific Hydrophysical Center of the National Academy of Sciences of Ukraine”, Shchyptsov Oleksandr
Published: March 2024

This scientific publication is a retrospective analytical collection of systematized materials on the results of intellectual creative activity of a large team of Ukrainian scientists, the purpose of which was scientific substantiation of priority areas for development of national science in oceanology on the basis of new knowledge and development of optimal ways of its application on the example of: formation of the National Program for Research and Use of Resources of the Azov-Black Sea Basin and Other Areas of the World Ocean for the Period up to 2000; the process and procedures of preparation of scientists of the National Academy of Sciences of Ukraine for the United Nations Decade for Ocean Science for Sustainable Development (2021-2030); successes in scientific-organizational and scientific-technical activities of the Scientific Coordination Center of Marine Sciences of Ukraine under the Committee on Scientific and Technological Progress of Ukraine, the National Agency for Marine Research and Technology under the Cabinet of Ministers of Ukraine, and the State Institution “Scientific Hydrophysical Center of the National Academy of Sciences of Ukraine”. The publication is designed for: – scientists, specialists, academicians and students, who are interested in the complex of sciences that study the oceans; – People’s Deputies of Ukraine and government official, who ensure the implementation of scientific and organizational activities for the formation of state (national) programs of scientific and technical development of the country in the field of study, development and use of marine resources, as well as are responsible for implementing programs and policies of the European research area in Ukraine.
QSPR-модель для прогнозування стандартної ентальпії утворення складних оксигеновмісних неорганічних сполук
Authors: Огнiченко Л.М. , Артеменко А.Г. , Кічьова М.Є. , Стельмах С.І. , Зінченко В.Ф. , Кузьмiн В.Є.
Published: March 2024

Досліджено вибірку з 74 оксигеновмісних неорганічних сполук — складних змішаних оксидів і солей, деякі з яких є перспективними компонентами оптичних матеріалів. Із застосуванням 1D-симплексного підходу побудовано адекватну консенсусну QSPR-PLS-модель для стандартної ентальпії утворення (ΔН0298) досліджуваних сполук. Під час розрахунку 1D-симплексних дескрипторів (одиниць, двійок, трійок, четвірок) для диференціації вершин (атомів) у симплексах використовували різні характеристики атомів з періодичної системи Д.І. Менделєєва, ступінь окиснення, електронегативність, іонний радіус, характеристики ван-дер-ваальсових взаємодій. Для тестового набору розробленої моделі коефіцієнт детермінації (R2 test ) дорівнює 0,94, середня відносна похибка прогнозу становить 10,0 %. У результаті аналізу структурних параметрів, які увійшли до розробленої моделі, виявлено, що найістотніший вплив виявляють орбітальні квантові числа електронів зовнішнього шару атомів (28 %) і ван-дер-ваальсові взаємодії (19 %). Побудовану модель можна використовувати для попередньої оцінки стандартної ентальпії утворення різноманітних оксигеновмісних неорганічних сполук.
PERKEMBANGAN PENELITIAN PENDEKATAN STEAM PADA PEMBELAJARAN FISIKA DI INDONESIA: A SYSTEMATIC LITERATURE REVIEW
Authors: Fitria Trisonia , Kuswanto Heru , Dwandaru Wipsar Sunu Brams , Jumadi Jumadi , Putri Dian Puspita Eka , Juneid Adiella Zakky
Published: March 2024

The impact of the STEAM approach in education can help students have 21st Century skills. This study aims to review the development of STEAM approach research on physics learning in Indonesia. Systematic literature review research with the content analysis method was used to review articles published from 2018-2022. The analysis techniques carried out are identification, screening and analysis. Assessment of article inclusion and quality is done to avoid bias in research. There were 28 articles that were in accordance with the focus of this study. The results of the study are the most widely used type of experimental research, the subject of research is at the junior high school level students grade VII and VIII with a sample number of 20-45 students. Test research instruments are widely used by examining light and optical materials. The variable that is often measured is creative thinking skills. Learning media integrated with the PjBL-STEAM model is the most widely used choice. Therefore, research variables that have not been measured are representation skills and higher-order thinking skills aspects of problem solving and physical materials that have never been used for testing are rigid body equilibrium, work and energy, temperature and heat, newton's laws, electromagnetic, electrical and parabolic motion, so further study is needed on its implementation with the STEAM approach.ABSTRAKDampak pendekatan STEAM dalam pendidikan dapat membantu siswa memiliki keterampilan Abad ke-21. Penelitian ini bertujuan meninjau perkembangan penelitian pendekatan STEAM pada pembelajaran fisika di Indonesia. Penelitian systematic literature review dengan metode konten analisis digunakan meninjau artikel yang terbit dari tahun 2018-2022. Teknik analisis yang dilakukan adalah identifikasi, screening dan analisis. Penilaian inklusi dan kualitas artikel dilakukan untuk menghindari bias pada penilitian. Didapatlah 28 artikel yang memiliki kesesuaian dengan fokus penelitian ini. Hasil penelitian adalah jenis penelitian eksperimen paling banyak digunakan, subjek penelitiannya pada siswa tingkat SMP kelas VII dan VIII dengan jumlah sampelnya 20-45 siswa. Instrumen penelitian tes banyak digunakan dengan meneliti materi cahaya dan optik. Variabel yang sering diukur adalah keterampilan berpikir kreatif. Media pembelajaran yang terintegrasi model PjBL-STEAM menjadi pilihan paling banyak digunakan. Oleh karena itu, variabel penelitian yang belum diukur adalah keterampilan representasi dan keterampilan berpikir tingkat tinggi aspek pemecahan masalah dan materi fisika yang belum pernah digunakan untuk pengujian adalah kesetimbangan benda tegar, usaha dan energi, suhu dan kalor, hukum newton, elektromagnetik, kelistrikan dan gerak parabola, sehingga hal tersebut diperlukannya kajian lebih lanjut mengenai implementasinya dengan pendekatan STEAM.
Quanto vale o sonho?
Authors: Zincone Rafael , Pereira Cláudia
Published: March 2024

Este artigo apresenta resultados de pesquisa envolvendo vídeos e entrevistas voltados para o funk ostentação disponibilizados na plataforma YouTube em um momento de maior profusão do subgênero musical no cenário nacional (2011-2015). Coube aqui traçar algumas relações entre os discursos proferidos pelos jovens funkeiros, a partir de suas histórias de vida, e o contexto mais geral de mudanças socioeconômicas daquele período, destacadamente, a expansão do mercado de consumo dentro das periferias brasileiras durante governos do Partido dos Trabalhadores (PT). Foi aplicado o método da Análise Interpretativa de Conteúdo (AIC) sobre um corpus envolvendo vídeos com entrevistas no YouTube de MCs de maior projeção midiática dentro desse circuito musical, destacadamente, o produtor e empresário Konrad Dantas. Autores como Zigmunt Bauman, Pierre Bourdieu, Richard Sennett, Pierre Dardot e Christian Laval, Verónica Gago, Vander Casaqui e Mayka Castellano, entre outros, colaboram para a reflexão teórica. A partir de um corpus geral envolvendo 52 entrevistas, concluiu-se que tanto KondZilla quanto os seis MCs narravam uma história de ascensão social movida por uma trajetória de esforço e de sucesso calcada em discursos caracterizados pela lógica individualista e pelo fenômeno do empreendedorismo de si.
Perceived attachment history predicts psychedelic experiences: A naturalistic study
Authors: Cherniak Aaron D. , Mikulincer Mario , Gruneau Brulin Joel , Granqvist Pehr
Published: March 2024

Background and aims

Emerging research indicates that psychedelics may have therapeutic potential by fostering meaningful experiences that act as “inflection points” in people's narratives of personal development. However, psychedelic research has largely failed to address pertinent developmental considerations. We investigated whether attachment-related variables were associated with psychedelic experiences and whether psychedelic experiences moderated expected links between perceived attachment history and current adult attachment orientations.

Methods

We administered an online survey to an international Jewish sample (N = 185) with psychedelic experience. The survey included measures about recollection of attachment interactions with parents (perceived attachment history), adult attachment orientations (anxiety, avoidance), and psychedelic phenomenology (mystical experiences, challenging experiences, emotional breakthrough, ego dissolution, sensed presence) associated with respondents' most memorable psychedelic experiences.

Results

Perceptions of an insecure attachment history were positively linked to all measures of psychedelic phenomenology (r's = 0.19–32, p's mostly < 0.01). In contrast, adult attachment orientations were unrelated to psychedelic phenomenology. Also, psychedelic phenomenology mostly did not moderate the links observed between perceptions of an insecure attachment history and adult attachment orientations.

Conclusions

Our findings suggest that perceptions of early attachment experiences may be relevant to psychedelic phenomenology. However, subjective experiences associated with naturalistic psychedelic use do not typically attenuate links between a perceived insecure attachment history and attachment insecurity at present.
Religions of the World: Questions, Challenges, and New Directions
Authors: Dorrough Smith Leslie , Ramey Steven W.
Published: March 2024

Religions of the World: Questions, Challenges, and New Directions provides a critical introduction to the social, political, and cultural interests that inform how people describe and identify with religion. One of its goals is to provide a sense of methodological transparency that few, if any, other textbooks today offer. The book opens with an Introduction that discusses contemporary methodological concerns in the study of religion, with special focus on the World Religions Paradigm. This is followed by ten chapters, six (6) of which discuss a distinct religion and four (4) of which discuss regional traditions. This organization is intentional and self-conscious, as the authors discuss how these scholarly categories (distinct tradition vs. regional tradition) shape the ways that both insiders and outsiders discuss, practice, and engage religion in their daily lives. Each chapter introduces four different popular descriptions, or representations, of a particular religion or regional tradition. Following each representation is an analysis of what this representation accomplishes for those who promote it and what (or who) it also leaves out. Following this, a specific case study provides a real-world example of the difficulties in thinking about religion in overly simplistic ways. The text does not attempt to diminish or reconcile the possible contradictions between the different representations so as not to leave the reader with the idea that one representation is more correct or authentic than another, or that all four can be easily stitched together to make a tidy picture. Instead, students take away from each chapter a foundation of knowledge about the practices, issues, and conceptions that are associated with global religious traditions as well as the complexity behind any single representation. The objective is to make more transparent the human activity of constructing religion as well as the contemporary consequences of these representations, as people use them to legitimize identities and negotiate for social, legal, and economic resources. Thus, throughout the text, students are challenged to interrogate who gets to decide on a particular portrayal of a religious tradition as well as the interests informing those decisions. An Afterword also discusses ways that the skills learned in the text have applicability beyond the study of religious discourses.
‘The Alpha and the Omega’
Authors: Yonish Fanny
Published: March 2024

The author analyses two well-known cookery and conduct books published in England during the nineteenth century -- Modern Cookery by Eliza Acton, first published in 1845, and Mrs Beeton’s Book of Household Management by Isabella Beeton, published in 1861, as well as a themed book targeted at an ethnic minority, The Jewish Manual, edited anonymously by a woman but attributed to Lady Judith Montefiore and published in 1846 -- and argues that English cookery and conduct books written by women during the nineteenth-century challenged traditional gender and social boundaries and undermined women’s submissive image by presenting modes of women’s empowerment at personal and interpersonal levels.
Reflections on Snapper Soup
Authors: Perkins Blake
Published: March 2024

The paper looks at the origins of Snapper Soup, which -- along with pepperpot or perhaps scrapple and the cheese steak, a later addition, -- is a dish traditionally associated with Philadelphia.
Harriet Nussbaum: Hummus: A Global History
Authors: Murrell Di
Published: March 2024

Harriet Nussbaum: Hummus: A Global History: Reaktion Books, The Edible Series, 2021: 118 pp., hardback, £11.99.
‘Teaching Writing in English as a Foreign Language: Teachers’ Cognition Formation and Reformation’ H. Zhao and L. J. Zhang (2022)
Authors: Li Zhi , Chen Jing
Published: March 2024

Teaching Writing in English as a Foreign Language: Teachers’ Cognition Formation and ReformationH. Zhao and L. J. Zhang. Springer Nature, Switzerland (2022).XXII + 178 pp., € 106.99, ISBN: 978-3-030-99991-9
Fundamentos filosófico-jurídicos de la protección debida a las víctimas de migraciones forzadas: un análisis a la luz del principio de dignidad humana
Authors: Viteri Verónica
Published: March 2024

Este trabajo analiza la protección de las víctimas de migraciones forzadas desde la perspectiva de la filosofía del derecho y del derecho internacional de los derechos humanos. Por un lado, se centra en el origen y los fundamentos filosófico-jurídicos de la dignidad humana y en sus exigencias prácticas como principio jurídico. Comprendida en este sentido, la dignidad es considerada como el fundamento de los derechos humanos más básicos; e implica unas prerrogativas jurídicas universalmente exigibles a favor de todas las personas, por el sólo hecho de su naturaleza humana; y sin considerar factores exógenos, como el origen o la nacionalidad. Dentro de este contexto se recuperan nociones fundamentales como el ius communcationis, o derecho de sociabilidad de los seres humanos y la hospitalidad, que conllevan un aprovechamiento común de la tierra universal dentro de la comunitas orbis o comunidad universal.

Se concluye que, pese a los esfuerzos y los múltiples instrumentos jurídicos existentes a este respecto, y que tienen como base la dignidad de la persona, la protección que se les reconoce en la práctica no es suficiente. La razón de ello radica en diversos factores, en particular, en el hecho de que si bien la dignidad humana puede ser considerada como la base para el reconocimiento de los derechos humanos en igualdad de condiciones, su alcance se limita a los derechos más fundamentales, como la vida o la prohibición de la tortura y tratos inhumanos y degradantes, más no implica derechos más específicos como el de libre circulación o residencia.
Javier Hervada: notas para entender su legado y personalidad científica
Authors: Herrera-Pardo Camila
Published: March 2024

El presente artículo examina las notas más prominentes de la personalidad científica de Javier Hervada, como base para entender sus potencialidades de prospección y desarrollo. Así pues, se da cuenta de qué clase de intelectual fue Hevada, en qué contexto es formulada su obra y a qué problemas responde específicamente. Asimismo, se abordan sus influencias intelectuales, su relación con el tomismo y con la ciencia jurídica del siglo XX, y la naturaleza del intento de abrir la iusfilosofía clásica a un campo epistemológico totalmente nuevo, como el de la teoría y la ciencia jurídica. En relación con lo anterior, el artículo plantea una distinción entre los diferentes niveles espistemológicos en los que se desarrollan los aportes intelectuales del maestro de Navarra, diferenciando, por tanto, por lo tanto, entre las definiciones y conceptualizaciones propiamente iusfilosóficas, las iusteóricas y las científicas. De este modo, se plantea un criterio para evaluar el impacto del replanteamiento de ciertos elementos a nivel iusfilosófico a nivel científico o iusteórico y, en consecuencia, la continuidad o ruptura teórica entre el «Primer Hervada» y el «Segundo Hervada». Finalmente, el artículo muestra cómo las temáticas y los acentos hervadianos responden, al menos parcialmente, a las temáticas y problemas de su época por lo que el legado hervadiano, para ser auténticamente fiel al espíritu del Maestro de Navarra, ha de ser continuado de un modo que sea capaz de responder a los problemas y desarrollos que plantea el panorama jurídico y iusfilosófico propio del siglo XX. El texto plantea, pues, indicios sobre posibles vías de continuación y expansión del realismo jurídico clásico, nuevos debates y escenarios epistemológicos, que permitan renovar la vitalidad del proyecto científico hervadiano en la era en la que sus discípulos estamos llamados a vivir.
Effect of ZnO nanoparticles synthesized by the improved method on the antibacterial properties of cotton textile materials
Authors: Asaulyuk Tatyana , Semeshko Olga , Saribyekova Yuliya , Kulish Irina , Horokhov Ihor
Published: March 2024

The object of this study is imparting antimicrobial properties to textile materials made from natural fibers and their blends.
The study is aimed at solving the problem of ensuring a prolonged antimicrobial effect of cotton-containing fabrics.
The use of ZnO nanoparticles, synthesized by the simple resource-saving method, as part of polymer-colloidal finishing compositions for the fabrics finishing is proposed. The effectiveness of using synthesized ZnO to impart prolonged antibacterial properties to cotton fabrics was assessed by studying the morphology, chemical composition, and bactericidal activity of nanoparticles.
ZnO nanoparticles were synthesized by direct precipitation method at low temperatures in a short time in an aqueous solution using zinc acetate dihydrate and sodium hydroxide as precursors. The average crystallite size calculated using the Scherrer method is 28 nm. The degree of crystallinity according to X-ray diffraction pattern is 93 %.
Using scanning electron microscopy, the formation of nanoparticles of uniform size in the form of short rods was established and the successfully synthesized ZnO phase in the hexagonal wurtzite structure was confirmed. The chemical purity of the crystalline material was confirmed using energy dispersive analysis. The atomic percentages of the elements are 47.6 % and 52.4 % for Zn and O, respectively. Study of the inhibition zone around fabric disks treated with ZnO showed their high bactericidal activity against air microflora and the gram-negative bacterium P. aeruginosa. It has been established that the use of ZnO as part of a polymer-colloidal system based on the acrylic polymer ensures the resistance of bactericidal treatment to washing.
The reported scientific results are of practical importance for improving the standard technological process for finishing cotton textile materials
Pressure-volume-temperature analysis of Caspian oil to improve the analytical delumping procedure
Authors: Ismailova Jamilyam , Baibekova Ayaulym , Delikesheva Dinara , Abdukarimov Aibek , Khussainova Alfiya
Published: March 2024

Compositional modeling of the reservoir isn’t complete without calculations of phase equilibrium and is a complex process involving many calculations. In nature, hydrocarbons don’t occur as separate components, they’re mainly mixtures. When modeling the reservoir composition for phase equilibrium calculations, in order to reduce computational costs, in practice, hydrocarbon mixtures are grouped into pseudo-components. The number of grouped pseudo-components varies from 4 to 10. This grouping process is called lumping. However, when crude oil comes to the surface, it’s important to know its detailed composition, since mixtures grouped into pseudo-components don’t allow you to know this. In this regard, modeling of the detailed composition of hydrocarbons is the main tool for understanding the detailed phase separation and design of surface facilities. In practice, this process is called delumping. In the case of this process, the detailed composition of the fluid is presented and the amount reaches up to 36 components, sometimes more. The delumping process, due to the precise separation of heavy plus fractions into carbons with single ordinal numbers (C7, C8, etc.), makes it possible to clearly recognize non-zero BIP’s in the equation of state.
The new analytical approach has not previously been applied to the oils of the Caspian region, so this approach has an important role for the oil industry in the Caspian region. Analytical delumping in this paper was done to improve the PVT modeling. This paper presents the results of PVT research of Caspian oil and presents a comparison of analytical and numerical methods of delumping. As a result of the study, it was found that the analytical approach is in excellent agreement with experimental data and data from software such as PVTsim
Defining a selection procedure of CRM systems for the information-analytical support to the marketing activities at an enterprise
Authors: Raiko Diana , Shypulina Yuliia , Potrashkova Liudmyla , Illiashenko Nataliia , Bozhkova Viktoriia , Konokhova Zoia , Miroshnуk Mariіa , Nagy Szabolcs , Illiashenko Sergii , Abdunurova Assem
Published: March 2024

The object of this study is digital marketing at an enterprise. The investigated problem is the lack of a sufficient level of systematic consideration of the task to use information communication systems and technologies in the marketing activities of enterprises. Availability of such a system would increase the company's potential in creating mutual value for the seller and the client when implementing relationship marketing technologies.
It is shown that the information and analytical support of the enterprise's marketing activity can be presented as a tool of the enterprise's activity, functioning as an element of the enterprise's management system. Among the general criteria for choosing a CRM system, it is proposed to consider convenience and ease of use, flexibility of system settings for special business needs, price, simplicity. Such consideration of CRM systems and their capabilities provide economic effects that affect the profitability of the enterprise and prevent the impact of negative factors on the development of the company.
The proposed procedure for choosing an adequate CRM system was verified on the example of a dental clinic, which made it possible to draw a conclusion about the feasibility of implementing a CRM system in the business under study. It is based on received estimates of short-term and long-term economic effects of the system's application. Calculated data are provided for support, which showed that the productivity of the administrator's work increased by 73.3 %, and the average duration of patient care by the doctor, taking into account the time of registration, decreased by 25 %. This is due to the fact that the system makes it possible to perform a quick search on the general electronic database, and the time saved at this stage can be spent on performing additional work
Synthesis of nanocrystalline nickel via pulsed current electrodeposition in additive-free deposition bath and comparison of nanoscale characterization
Authors: Tritjahjono Rahmad Imbang
Published: March 2024

An experimental investigation on synthesis of nanocrystalline nickels by pulsed current electrodeposition has been carried out in an additive-free Watts bath employing nickel-sulphate solution with similar nickel ion concentrations. Aluminum was used as a substrate. It demonstrated the advantage of easier removal process of electrodeposited nanocrystalline nickel from its substrate. Whereas the use of high-purity nickel anode was intended to replace nickel ions, which decreased during electrodeposition. Different peak current densities of 450, 750 and 1000 mA/cm2 were applied. A pulsed current was set at a similar pulse pattern of on-time and off-time of 1 ms and 9 ms respectively. The shorter on-time demonstrated the ability to limit ion deposition, which was related to the formation of finer grains. The off-time arrangement was targeted to ensure that the ion mobility had completely stopped. Higher current density demonstrated a dominant impact on deposits, generating a higher nucleation rate that is related to depositing nanocrystalline nickel. A peak current density of 1000 mA/cm2 produced grain sizes in the nanoscale regime.
Without any additional additive, nanocrystalline nickel was successfully yielded. Investigation of grain size obtained from the 1000 mA/cm2 has been conducted by extracting full width at half maximum peak intensity (FWHM) revealed from X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM) exhibited consistent results of 22 nm and 25.4±3.4 nm, respectively. It is also evidence of the significant role of pulsed current density. In inclusion, nanocrystalline nickel can be synthesized in an electrodeposition bath without any addition of additives
Comprehensive assessment of technical condition of vehicles during operation based on Harrington’s desirability function
Authors: Aulin Viktor , Rogovskii Ivan , Lyashuk Oleh , Titova Liudmyla , Hrynkiv Andrii , Mironov Dmytro , Volianskyi Mykhailo , Rogatynskyi Roman , Solomka Oleksiy , Lysenko Serhii
Published: March 2024

The object of research is the process of changing the technical condition of vehicles during their operation. The study solved the problem of comprehensive evaluation of change in the technical condition based on Harrington’s desirability function.
The essence of the results is as follows. A scale of desirability was built and a set of criteria for assessing the technical condition of vehicles was clarified. A general desirability index is proposed as a convolution of partial Harrington desirability functions. When solving the investigated problem, the characteristics and properties of the partial and generalized Harrington’s desirability function and their graphical representation were taken into account.
Using an example of the technical condition of the chassis and braking system of vehicles, a set of controlled parameters was formed. Based on the values of the controlled parameters, the regression equation of the partial Harrington desirability functions was obtained.
The value of the weighting coefficients of each of the criteria was determined and the generalized desirability function was calculated.
As a result of the study, it was established that if the generalized criterion of desirability is D<0.37, then individual nodes, systems, and units of the vehicle are in a pre-accident condition, if 0.37£D£0.63 – in a satisfactory condition, and if D>0.63 – in a good condition and cannot be the cause of a traffic accident.
An applied aspect of the results is the implementation of the technique of comprehensive assessment of the technical condition of the vehicle. This causes an increase in the productivity of the expert (specialist), will shorten the period of the auto technical examination, and improve its quality. The results could be used by insurance companies and investigators, investigators and judges when considering traffic accidents
Development of technology for the production of all-purpose buckwheat malt using plasmochemically activated aqueous solutions
Authors: Kovalova Olena , Vasylieva Natalia , Haliasnyi Ivan , Gavrish Tatiana , Dikhtyar Aliona , Andrieieva Svitlana , Gontar Tatiana , Osmanova Olha , Omelchenko Svitlana , Ashtaiev Oleksandr
Published: March 2024

The result of the conducted research is the development of buckwheat malt production technology using plasma-chemically activated aqueous solutions. Buckwheat grain with high starch content became the object of research. The main technological problem is obtaining high-quality brewing malt suitable for the production of gluten-free beer. The expediency of using plasma-chemically activated aqueous solutions as an intensifier of the process of germination of buckwheat grains and an effective disinfectant of buckwheat malt has been experimentally proven. It is shown that the use of plasma chemical activation of technological solutions allows to speed up the process of moistening of buckwheat grain by more than 2 times. The energy and germination capacity of buckwheat grains, when using plasma-chemically activated aqueous solutions, underwent positive changes. The effect of increasing the energy of germination was from 8 to 14 %, and the ability to germinate was 2–9 %. The amylolytic activity of buckwheat malt was analyzed, an increase in amylolytic activity in the range of 30–77 units/g was noted. The extractability of buckwheat malt was investigated separately. This indicator increased by 2–9 % depending on the concentration of peroxides in the solution. The Kolbach index also increased by 2–10 %, which indicates an intensive course of proteolysis. The total amount of amino acids in the experimental samples increased by 619 mg/100 g. There was a significant decrease in the viscosity of the wort, which indicates the high solubility of the obtained buckwheat malt.
The technology can be applied in the industrial production of brewing malt and sprouted buckwheat grain of functional purpose. The developed buckwheat malting technology will receive priority in the production of environmentally friendly buckwheat malts of universal purpose that are not contaminated with pathogenic microflora
Determining heat and mass exchange kinetic in a column heat exchanger with direct phases contact
Authors: Tseitlin Musii , Shkop Andrii , Shestopalov Oleksіi , Raiko Valentina , Ponomarova Nataliia
Published: March 2024

The object of this study was the processes of heat and mass transfer in a column heat exchanger with direct phases contact. The investigated problem is related to the need to determine the estimates of the kinetic characteristics of heat exchange during the concentration of solutions in a contact heat exchanger equipped with dual-flow trays. In particular, it was assumed that the determination of the influence of the gas velocity in the apparatus and the density of liquid irrigation of the plates, as well as the geometry of the plates, on the kinetic coefficients would make it possible to reveal the patterns of heat and mass exchange between the liquid and the air in contact with it in the column apparatus. It was determined that to increase the intensity of mass transfer in the gas and heat transfer in the liquid, it is necessary to increase the gas velocity and irrigation density. Then the gas velocity and irrigation density have approximately the same effect on the intensity of mass transfer in the gas and heat transfer in the liquid. When studying the effect of the geometry of the plate on the kinetic coefficients of heat transfer in the liquid and mass transfer in the gas, it was established that the value of the portion of the free cross section of the plate has a decisive influence on the value of the considered kinetic coefficients.
A generalized equation was built, which makes it possible not only to calculate the enthalpy transfer coefficient during the interaction of sodium chloride solution with air but also to determine the limiting stage of this process.
The results could be used to design a unit for concentrating a hot solution of sodium chloride by evaporating water during blowing with air in a contact heat exchanger. This would make it possible to obtain crystalline sodium chloride using secondary energy resources and other non-traditional sources of thermal energy
Identifying the influence of split tensile strength to crack width of high-strength reinforced concrete beam with polypropylene fiber from medical mask waste
Authors: Ningrum Diana , Soehardjono Agoes , Suseno Hendro , Wibowo Ari
Published: March 2024

Cracks in concrete structures due to tensile weakness can be repaired by using fiber concrete, including medical mask waste as an additive in high-strength concrete mixes. This research the influence of polypropylene fiber from medical mask waste on the mechanical characteristics, flexural behavior, and crack width of high-strength reinforced concrete (RC) beams. The initial stage involved examining the properties of the concrete constituent materials. The testing process was based on a high-strength concrete mix design using the Aitchin method mix design sheet. Compressive strength and split tensile strength were tested at fiber content (0 %, 0.15 %, 0.20 %, and 0.25 %). The three-point flexural testing procedure was carried out at 28 days on 1200×100×150 (mm) RC beams. The use of LVDT, strain gauge, and other measuring devices supported the acquisition of the required data. The results showed that the split tensile strength reached the optimum value of 66.19 MPa at 0.24 % fiber content. Polypropylene fiber from medical mask waste in RC beams showed a positive impact on reducing crack width at increased split tensile strength. Waste mask fiber content of 0.15 %, 0.20 % and 0.25 % gave stable and better results compared to 0 % content (no fiber). With high steel stress (fs), and high strain, it offers the potential to improve the mechanical properties of high-strength concrete, thereby reducing the width of cracks that occur. This improves the tensile weakness of the concrete. The effect of split tensile strength on the crack width (w) of beams with the formula approach: wexp=3.74ftf-1.513, wan=0.187ftf-0.022 shows that the experimental results have a significant effect on decreasing the crack width that occurs in high-strength RC beams, thereby improving the quality of concrete
Physico – chemical study of the adsorption properties of natural minerals for sorption treatment of wastewater from Pb+2, Ni+2, Zn+2 ions
Authors: Murzagaliyeva Manshuk , Ashimkhan Nazgul , Sapiyeva Ardak , Daribayeva Gulnur
Published: March 2024

One of the urgent challenges is to clean up industrial wastewater from toxic and heavy metal ions in a more efficient and environmentally friendly way.
Bentonite montmorillonite, bentonite red, zeolite and diatomite of the Almaty region were selected as the materials of the study.
In this study was investigated the adsorption properties of natural minerals by physico-chemical methods for the sorption treatment of wastewater from Pb+2, Ni+2, Zn+2 ions.
X – ray phase analysis determines the chemical composition of the materials studied. The main component of diatomite is SiO2, in zeolite – Laumontite composition Ca4Al8Si16O48·14H2O (51.3 %). The base of bentonites is bedellite – montmorillonite, which has an amorphous structure. The method of atomic absorption spectrometry was used to investigate the sorption of heavy metal ions (Pb+2, Ni+2, Zn+2) by the natural adsorbents under investigation. Bentonites, Mukra and Medium Tentec have the best sorption properties. Here, the content of lead, nickel and zinc ions is reduced by an average of 82–85 %. In the case of diatomite, the ion content of the same metals is reduced by approximately 74–76 %, and for zeolite by 64 %. Generally speaking, the adsorption properties of these minerals are expected to be achieved by the high porosity in the case of diatomite and zeolite or the penetration of ions into the interpackage space between the bentonite layers. Mixing adsorbents, increasing their mass percentages and increasing the mass of the mixture leads to increased efficiency of the degree of cleaning from these ions.
In conclusion of the study, natural minerals of the Almaty region have sorption properties that can be used for practical purposes, in particular for wastewater treatment
Procesos de investigación educativa en la virtualidad
Authors: Rodríguez-Santos Marycarmen
Published: March 2024

The purpose of this research was to unveil a study of the behaviors and stories that university students and teachers possess about the change from face-to-face to virtual modality in education. I took the qualitative approach considering the vision, opinion, emotions and interests of those who build social life in educational institutions. To get to the educational fact I took a position from the ontology of being, where it was the approach of a context, the theory of social constructionism was assumed as support to reveal the relationship of the subject with its object of study. The approach is guided by the ontological and epistemological contribution of the hermeneutical phenomenological method and I relied on Sandín Esteban (2003, in this sense, the variations are determined when describing the phenomena with the interpretation and understanding of the individual interviews. that, in educational institutions, currently the management developed corresponds to the parameters of the traditional paradigm of education, in view of the fact that it focuses on the development and fulfillment of a planning that responds to the requirements of the institutional organization. The student receives information that he processes to comply with an evaluated activity arranged by the teacher, thus turning learning into a conglomerate of conceptual notions acquired in the educational fact. There is no unified criterion regarding the development of an investigation adapted to the requirements and realities of social actors that make up the organization of higher education. It is important that the University understands that research is the critical spirit that positions knowledge at the top of society and that original productions with clear and coherent arguments give the level of height to the reason for being of higher education institutions.
Optimización del proceso de almacenamiento de la información de los estudiantes de la institución educativa belén, Colombia, a través de un sistema informático de control disciplinario y académico
Authors: Portillo-Wilches Jorge , Ayazo-Quintero Álvaro
Published: March 2024

The objective of this research was to optimize the storage and treatment of information corresponding to the students of the Belén Educational Institution in the municipality of Montelibano, through the design and implementation of a computerized system for disciplinary and academic control. The proposal arises from the diagnosed needs in aspects such as the control of active and graduate student files, the search for data and the generation of reports requested by internal and external personnel. In this quasi-experiment that included the application of pre-test and post-test, a control group of 20 teachers participated, who carried out the activities of recording and processing information in the traditional way, and an experimental group also made up of 20 teachers who used the web platform during the second semester of the year 2020. For the analysis of results, statistical techniques were used, among which frequency tables, percentages and bar graphs stand out, in addition, the ANOVA data analysis was applied, highlighting the significant decrease in completion times of the activities in the experimental group, as well as the satisfaction of the teachers, which allows concluding that the implemented computer system achieved the optimization objective.