bluuebunny/crossref_metadata_2025 huggingface dataset:
Time-temperature superposition of polybutadiene vitrimers
Authors: Ricarte Ralm , Shanbhag Sachin , Ezzeddine Dana , Barzycki Daniel , Fay Kevin
Published: August 2023

A vitrimer has covalent cross-links that preserve network connectivity but permit topology fluctuations through dynamic exchange reactions. In this work, we investigate the linear rheology of polybutadiene (PB) vitrimers bearing cross-links that exchange via dioxaborolane metathesis. PB vitrimers are cross-linked in solution using photoinitiated thiol-ene click chemistry. As the targeted cross-link density is increased, both the insoluble fraction and glass transition temperature increase. Linear viscoelasticity is studied using a combination of small amplitude oscillatory shear (SAOS), creep, and stress relaxation measurements. In SAOS, the elastic modulus is approximately constant while the viscous modulus increases as angular frequency decreases. In creep, the compliance displays power law behavior that persists for at least 8 hrs. In stress relaxation, the modulus transitions from a rubbery plateau into a power law regime. Both SAOS and creep data are visually superposed into master curves using horizontal shift factors that exhibit Arrhenius behavior. However, application of these determined shift factors to stress relaxation curves fail to align the data into a single master curve. SAOS shift factors (a_SAOS) collapse the short time relaxation data and their activation energy (E_a^SAOS) matches the effective Williams-Landel-Ferry activation energy for PB homopolymer, indicating that the short time dynamics correspond to network strand segment relaxations. Creep shift factors (a_creep) collapse the long time relaxation data and their activation energy (E_a^creep) is significantly larger than the energies predicted by established theoretical models for transient networks. We speculate the discrepancy between experiment and theory is due to the temperature dependence of the cross-linker mobility within the vitrimer matrix, which is not fully captured by established theoretical models.
CO2 methanation: deciphering the role of dopants (Mn, Co, and Cu) in Ni/SiO2 catalysts prepared by sol-gel chemistry
Authors: Zhao Yingrui , Casale Sandra , Sassoye Capucine , Debecker Damien
Published: August 2023

CO2 methanation is effectively catalyzed by Ni-based catalysts, and reactivity can be further tuned by the addition of promoters. Deciphering the relationship between the promoter in Ni-based catalysts and the corresponding catalytic performance in CO2 methanation mechanism is of great meaning for the development of highly active catalysts. Herein, a series of model bimetallic catalysts were prepared by sol-gel chemistry to address this fundamental challenge. Compared to Ni/SiO2 catalyst, the Mn-doped and Co-doped catalysts showed a higher methanation activity, with the former showing better performance below 250 °C and the latter showing better performance over 300 °C. On the contrary, the Cu-promoted catalyst showed a lower CO2 conversion with a lower CH4 selectivity in the whole temperature range. A comprehensive characterization study (TEM, XRD, XPS, H2-TPR, CO2-TPD, in situ DRIFTS, and TPSR analyses) suggests that the effect of promoters is not directly related to improvement of dispersion, reducibility, or basicity. Instead, we show that the promoters orient the reaction mechanism and favor the conversion of key intermediates. Mn addition has the highest promoting effect on the hydrogenation of formaldehyde intermediate (*OCH2) to methoxy intermediate (*OCH3), i.e. the rate determining step of the “RWGS+CO hydrogenation” pathway which is shown to predominate at low reaction temperature. Co addition facilitates the formation of formate species, i.e. the rate determining step of the formate pathway which is also active at high reaction temperature. Cu addition has a negative effect on the rate determining step of those two pathways, resulting a lower performance of Ni-Cu/SiO2.
Mesoscopic Model of Extrusion during Solvent-Free Li-Ion Battery Electrode Manufacturing
Authors: Paredes-Goyes Brayan , Zanotto Franco , Boudeville Victor , Grugeon Sylvie , Dupont Loic , Franco Alejandro A.
Published: August 2023

Solvent-free (SF) manufacturing of Lithium-ion battery (LIB) electrodes is safer and more environmentally friendly than the traditional slurry casting approach. However, as a young technique, SF manufacturing is under development of its pathways and operation conditions. In different SF processes reported in literature, extrusion is a common step. A detailed model of this process would be extremely computationally demanding. This work proposes a novel simplified discrete element model at the mesoscopic scale for the extrusion during SF manufacturing of LIB electrodes. In addition to active material particles, we consider fluid-like solid particles to approximate the molten polymer and the carbon additive phases. The formulation and other process parameters are taken from our experimental facility that uses extrusion to fabricate filaments for 3D printing of LIB cells. The simulations are carried out in a conical twin-screw extruder. Our approach allows to obtain representative electrode microstructures after extrusion, where electrical conductivity, ionic effective diffusivity, tortuosity factor and porosity are calculated. The model is a proof of concept that is employed to investigate the influence of the extruder speed and the cohesion level on the resulting electrode properties.
Rapid chemical screening of microplastics and nanoplastics by thermal desorption and pyrolysis mass spectrometry with unsupervised fuzzy clustering
Authors: Forbes Thomas P , Pettibone John M , Windsor Eric , Conny Joseph M , Fletcher Robert A
Published: August 2023

The transport and chemical identification of microplastics and nanoplastics (MNPs) are critical to the concerns over plastic accumulation in the environment. Chemically and physically transient MNP species present unique challenges for isolation and analysis due to many factors such as their size, color, surface properties, morphology, and potential for chemical change. These factors contribute to the eventual environmental and toxicological impact of MNPs. As analytical methods and instrumentation continue to be developed for this application, analytical test materials will play an important role. Here, a direct mass spectrometry screening method was developed to rapidly characterize manufactured and weathered MNPs, complementing lengthy pyrolysis-gas chromatography mass spectrometry analyses. The chromatography-free measurements took advantage of Kendrick mass defect analysis, in-source collision induced dissociation, and advancements in machine learning approaches for data analysis of the complex mass spectra. In this study, we applied Gaussian mixture models and fuzzy c-means clustering for the unsupervised analysis of MNP sample spectra, incorporating clustering stability and information criterion measurements to determine latent dimensionality. These models provided insight into the composition of mixed and weathered MNP samples. The multiparametric data acquisition and machine learning approach presented improved confidence in polymer identification and differentiation.
Emergence of Anionic Counterparts of Divalent Metal Salts as the Fine-Tuners of Alginate Hydrogel Properties for Tissue Engineering and Drug Delivery Applications
Authors: Dash Subhasis , Gutti Pavan , Behera Birendra , Mishra Debasish
Published: August 2023

The role of anionic counter ions of divalent metal salts in alginate gelation and hydrogel properties was thoroughly investigated. Three anions were selected from the Hofmeister series viz. sulphates, acetates and chlorides paired in all permutations and combinations with calcium, zinc and copper divalent metals. Spectroscopic analysis revealed the presence of anions and their interaction with the metal atoms post-gelation. Data showed gelation time and other hydrogel properties were mostly governed by the cations. However, subtle yet significant variations in viscoelastic, water-uptake, drug-release and cytocompatibility properties were anion dependent in a cationic group. Computational modelling study showed metal-anion-alginate configurations were energetically more stable than metal-alginate models. The in vitro and in silico studies conclude that acetate anions precede the chlorides in the drug-delivery, swelling, and cytocompatibility fronts, followed by sulphate anions in each cationic group. Overall, the data provided affirmation that anions are integral part of the metal-alginate complex. Furthermore, anions offer a novel option to further fine-tune the properties of alginate hydrogels for tissue engineering and drug delivery applications. Moreover, extensive exploration of this novel avenue would enhance the usability of alginate polymers in pharma, environmental, biomedical and food industries.
PENGARUH KEPEMIMPINAN PELAYAN DAN KOMUNIKASI INTERPERSONAL TERHADAP KINERJA KARYAWAN JASA PENGIRIMAN
Authors: Purwoto Lukas , Widiarto Alfonsus , Rahmawati Christina Heti Tri
Published: August 2023

This study gives primary attention to the behavior of leaders in an effort to improve employee performance. The research objective was to examine the effect of servant leadership and interpersonal communication on employee performance. The research was conducted by taking respondents from employees who were working in a delivery service organization. The data collection method was carried out by distributing questionnaires to respondents in a sample that took all members of the population. Data analysis was carried out by applying multiple regression which was assisted by processing it with a computer program. The research results show that servant leadership and interpersonal communication are important attributes of service delivery organization managers when managing employees towards high performance.
A Window to Treating Apical Fenestration: Surgical Management of Non-Healing Symptomatic Periapical Lesion
Authors: Pasha Shiraz , Bilal M Muhammed
Published: August 2023

Apical fenestration is a rare clinical entity in endodontics. Precise diagnosis and treatment plan should be made to achieve favourable results. In the present case report a 35-year-old male patient with continuous pain for almost one month after root canal treatment reported to the clinic. Diagnosis was made with the aid of CBCT Cone Beam Computer Tomography which confirmed apical fenestration. A comprehensive treatment plan was devised. Routine endodontic therapy with surgical intervention was done which yielded in the success of the treatment. Patient was followed up for six months and the healing process was noted to be uneventful.
A Case Study of a 73 -Year-Old Male with Mantle Cell Lymphoma
Authors: . Shambhavi , Lobo Diana
Published: August 2023

Mantle cell lymphoma MCL is a rare subtype of B-cell non-Hodgkin lymphomas NHLs characterized by a 1114 translocation resulting in overexpression of the cyclin D1 CCND1 gene. The MCL typically presents with advanced extra nodal bone marrow peripheral blood splenic andor gastrointestinal involvement. Excisional biopsy of lymph node and immunohistochemistry plays an important role in the diagnosis. Standard first-line treatment consists of chemoimmunotherapy. This may result in prolonged remission but relapse is to be expected. This is the case of a 72-year-old man with mantle cell lymphoma admitted to hospital in December 2022 with the chief complaints of a lump in the axilla significant weight loss and fatigue for one month. Patient also had a previous history of osteoarthritis. He was treated with five cycles of chemotherapy with an interval of 28 days between the cycles. He was advised to consume high protein diet and to perform quadriceps and hamstring strengthening exercises. He was informed to periodically review in outpatient department and to consult a doctor if any unusual symptoms present.
Nurses’ Role in Strengthening Sensory Inputs of Preemies in NICU
Authors: Shanthi Lolo Renilda , Leonilda Mendonca Theresa
Published: August 2023

Infants born prematurely are deprived of the prenatal sensory stimulation necessary for their proper development and the harsh environment in neonatal intensive care unit NICU severely impacts their growth. This paper aims to strengthen the mother-newborn interaction to promote healthy growth and development by implementing evidenced-based sensory care in NICU and thus reducing the newborn mortality rate. This paper is focused on the initiation of positive sensory inputs for the preemies in the NICU based on evidence-based care to promote in-utero experience to the preterm newborn. The main sensory inputs include Octopus therapy therapeutic positioning and nesting and multisensory stimulation including auditory tactile vestibular and visual stimulations. The research studies have shown the benefits of sensory stimulation of preterm newborns in NICU in terms of growth of the child neuromotor development physiological stability improvement in sleep and improved mother-newborn interaction promoting adjustment of the newborn to the extrauterine life. Nurses play a very important role in initiating this sensory stimulation for the preemies admitted to NICU with maternal participation in care.
A Case Report on Unfolding the Strange Mystery of PMS Triggering Extreme Behavior in Women
Authors: JA Bemina , Mathais Thereza
Published: August 2023

Reproductive health is a state of complete physical mental and social well-being during which the reproductive process is carried out. It is not just the absence of sickness or diseases of the reproductive process. Apart from the physical discomfort related to the menstrual cycle most women suffer changes in mood and behavior. Although the cycle has both highs and lows premenstrual syndrome PMS is a term used to describe the most difficult side of the menstrual cycle. The presence of PMS symptoms alone is typically not regarded as stressful or incapacitating even though PMS reduces quality of life and social functioning. Nonetheless this is a poorly understood health concern particularly in the workplace setting. The aim of this article was to present a case on unfolding the strange mysteries of PMS and its effective management with mindfulness-based cognitive behavioral therapy.
PRMT5 triggers glucocorticoid-induced cell migration in triple-negative breast cancer
Authors: Noureddine Lara Malik , Ablain Julien , Surmieliova-Garnès Ausra , Jacquemetton Julien , Pham Thuy Ha , Marangoni Elisabetta , Schnitzler Anne , Bieche Ivan , Badran Bassam , Trédan Olivier , Hussein Nader , Le Romancer Muriel , Poulard Coralie
Published: August 2023

Triple-negative breast cancers (TNBCs) are the most aggressive breast cancers, and therapeutic options mainly rely on chemotherapy and immunotherapy. Although synthetic glucocorticoids (GCs) are given to alleviate the side effects of these treatments, GCs and their receptor, the glucocorticoid receptor (GR), were recently associated with detrimental effects, albeit the mechanisms involved remain elusive. Here, we identified the arginine methyltransferase PRMT5 as a master coregulator of GR, serving as a scaffold protein to recruit phospho-HP1γ and subsequently RNA polymerase II, independently of its methyltransferase activity. Moreover, the GR/PRMT5/HP1γ complex regulated the transcription of GC-target genes involved in cell motility and triggering cell migration of human TNBC cells in vitro and in a zebrafish model. Of note, we observed that GR/PRMT5 interaction was low in primary tumors but significantly increased in residual tumors treated with chemotherapy and GCs in neoadjuvant setting. These data suggest that the routine premedication prescription of GCs for early TNBC patients should be further assessed and that this complex could potentially be modulated to specifically target deleterious GR effects.
APPAREL MARKETING & MERCHANDISING
Authors: K.M Dr Pachiyappan
Published: August 2023

Merchandising is one of the most purposeful and useful disciplines in today’s global economy. It refers to all that goes in promoting and sustaining certain categories of commercial activity, including methods, practices and operations. It is the combination of marketing theory and practices, making effect on maximizing sales of the product. It also explains about the promotional activity of the product sales.
Specifics of activities of China's transnational corporations on world markets
Authors: Kazakova Nadiia , Sholom Alina , Miao Zhuang , Kuzenko Julia
Published: August 2023

Modern Chinese transnational corporations act as leaders in the world markets and have all the prospects for development. Today, the Chinese government seeks to change the status of the country from 'industrial" to "innovative". so it creates an optimal economic atmosphere for work in the country and in cooperation with other countries. China is strengthening its position in the innovation environment through its contribution to R&D and the development of the digital economy. The subject of the study are all aspects of Chinese TNCs’ production, innovation, investment, which make them successful operation on world markets. The aim of the study is to investigate the specifics of TNC activity, to evaluate how Chinese TNCs function in global markets. The objective: to consider the theoretical and methodological basis of the study of transnationalization in the world economy; to determine the essence and principles of the activities of transnational corporations, to study the specifics of the emergence and development of transnational corporations in China; to determine the current state and development prospects of China's TNCs on world markets. The research methodology is based on the application of a systematic analysis of the activities of transnational corporations, statistics and the historical-theoretical background of the emergence of TNCs, as well as the use of abstract research methods, expert assessments, correlation - regression analysis and economic analysis. Results: in this article, based on economic analyses, the role of China’s transnational corporations was assessed, and several priority development areas were identified. Conclusions: Most of China's multinational companies are among the top 500 of Fortune Global 500 and top 100 list of Forbes . Chinese multinational corporations use various strategies to increase competitiveness, especially "mergers and acquisitions", expanding not only the scale of production, but also the spheres of activity. Based on this, it can be concluded that Chinese TNCs have significant prospects for development and leadership in world markets.
STRATEGIC PROVISING OF ENTERPRISE FINANCIAL SECURITY IN COVID-19 CONDITIONS
Authors: Oriekhova Kateryna , Golovko Olena , Gayda Pavel
Published: August 2023

The spread of the Covid-19 pandemic requires modern enterprises to build an integrated financial security system. The main tasks of ensuring the financial security of enterprises in the conditions of coronavirus in Ukraine are: bringing normative legal acts governing economic activity to the requirements of the European Union; development and implementation of state policy in the field of preventing and overcoming the consequences of the Covid-19 pandemic; informing enterprises about state aid programs; use of modern digital technologies by enterprise; depth analysis of world, state and internal threats to economic activity of enterprises in the current and future periods.

During the quarantine, many enterprises suffered losses due to forced inaction. However, stabilization measures to improve financial security are needed not only for these enterprises. They are also necessary for the development of priority areas of management, introduction of innovative technologies of production activity, which are characterized by resource saving. Therefore, in modern conditions, the main component in the process of making sound management decisions to improve the financial security of the enterprise is to take into account, in addition to traditionally existing risks of economic activity, and the risks caused by the Covid-19 pandemic.

The purpose of the research is to develop a scientific approach to the strategic support of the financial security of the enterprise in the conditions of Covid-19.

The scientific approach to the strategic security of the enterprise in the COVID-19 financial security, which is based on the identified relationships between financial security and risk management, anti-crisis management, compliance, and will allow financial managers to improve the current practice of managing the enterprise's economic activity. In general, the proposed approach is aimed at improving the strategic development of the enterprise and corporate management of it in the context of changing environmental disturbance.

The strategic support of the enterprise's financial security is based on strategic management, which should include a number of elements: strategic analysis, strategic planning, controlling, budgeting and audit. Strategic analysis involves a comprehensive study of positive and negative factors that can affect the economic and financial situation of the enterprise in the future, as well as ways to achieve the strategic goals of the enterprise. For the implementation of strategic analysis of the financial security of the enterprise it is advisable to use the following methods: SWOT analysis, PEST-analysis and SNW-analysis, methods of expert assessments, the method of development of scenarios of events, in-depth definition of which is the subject of further study of the authors of this article.
INSTITUTIONAL DESIGN OF THE FINANCIAL CONTROL MODEL: COMPARATIVE ANALYSIS OF IDEAL AND REALITY
Authors: Khmelkov Andrii
Published: August 2023

The article is devoted to the attitude to INTOSAI as the leader of the control function of finance in the world, and to the INTOSAI recommendations, grouped into the IFPP, as an example of a control model: with a properly constructed structure and filled with meaningful disclosure on the implementation of control measures. This view of the INTOSAI experience enables us to propose our own institutional design for the INTOSAI classifications. The result of the institutional design is essentially a reflection of the reference (ideal) model of the external financial control model, i.e. the EGA Model, in terms of its structure. EGA Model has the INTOSAI institutional structure (Institutional Framework) and the INTOSAI auditing framework (Auditing Framework): to the institutional structure we have included not only fundamental and basic principles, but also several standards that, in our opinion, are also related not only to the control methodology , as far as the formation of the control model; to the audit structure, we include not only standards that methodologically ensure the principles of auditing, but also standards that are a methodology for the implementation of various types of audits, with guidance on their application.

Having obtained the classification of the INTOSAI experience in the background, we can conduct a study of the existing practice of state financial control in Ukraine and its compliance with the specified standard with the help of methods of institutional analysis, by comparing the formal norms of INTOSAI with the formal norms forming the national practice of state financial control. The data of the comparative analysis are grouped into the appropriate tables: at the level of the structure of the established control practice; at the level of methodology of functioning control subjects.

The result of the conducted comparative analysis, which consisted in testing the practice of state financial control in Ukraine for compliance with the standard (ideal) model, was the establishment of non-compliance of the researched practice with the developed standard - a quasi-model of the institute of financial control was built in Ukraine.
ASSESSMENT OF THE PRE-CONDITIONS FOR THE IMPLEMENTATION OF MODERN TECHNOLOGIES OF TAX CONTROL ON BASE EROSION AND PROFIT SHIFTING
Authors: Nosenko Dmytro
Published: August 2023

The purpose of the study is to assess the possibility of combining the concepts of transfer pricing, beneficial owner of income and valid business purpose in a model of three-component tax risk assessment for countering BEPS. To achieve this purpose, the author set priority tasks, namely conducting an isolated analysis of the concepts of transfer pricing, beneficial owner of income and valid business purpose with further identification of intersections and interconnections of such concepts, as well as the formation of conclusions regarding the possibility of combining these concepts into a single model for identification of BEPS risks. Under the study, the author analyzed the three-level transfer pricing reporting system introduced into the tax system of Ukraine by Law of Ukraine No. 466-IX “On Amending the Tax Code of Ukraine on Improving Tax Administration, Eliminating Technical and Logical Inconsistencies in Tax Legislation”. In particular, the study found grounds for moving the essence of transfer pricing analysis from the formal determination of compliance of the prices established within the controlled transactions with the “arm's length” principle to the analysis of value chains, distribution of functions, assets and risks within a multinational group of companies, as well as to the examination of the value allocation process between jurisdictions and the fairness of such allocation. The study established that the information disclosed under transfer pricing reporting process can become part of the analysis of the legality of applying of the provisions of international treaties on the avoidance of double taxation through the concept of “beneficial owner of income”. The draft model of three-component tax risk assessment for countering BEPS is proposed as a finding of the study. Such model corresponds with international trends of abandoning the formal study of transfer prices in separate controlled transactions in favor of a comprehensive study of the essence of the value allocation process within multinational groups of companies. The author concluded that the isolated assessment of the elements of the model of three-component tax risk assessment for countering BEPS, during tax audits, reduces the effectiveness of ensuring the sovereignty of national tax revenues. At the same time, the author saw the legislative limitation of the transfer pricing audit exclusively on issues of compliance with the “arm's length” principle as a key challenge to the implementation of the model of three-component tax risk assessment for countering BEPS. Such limitation of the control body's tools contradicts the global tendency to countering BEPS as a whole, and not as separate (independent) mechanisms of aggressive tax planning.
The Impact of Demographic Variables of Audit Committee on Earning Management in Listed Companies in Amman Stock Exchange
Authors: Ababneh Fawwaz Ali Taha , Laili Nur Hidayah , Khair Khairil Faizal
Published: August 2023

Purpose: The purpose of this study is to inspect the influence of demographic variables of the AC on EM in listed companies on the ASE. Specifically, the study aims to examine the effect of AC size, independence, expertise, and diversity on EM practices in Jordanian firms.
 
Theoretical framework: The influence of demographic variables of the AC on EM is an important topic that has been studied by a significant number of researchers, as well as those who are interested in the accounting profession. This subject has gotten a lot of attention from academics, professionals, and other interested parties in recent years (Al-Thuneibat, Alsmadi, and Alsharairi (2017); Al-Khadash (2016); Srouji and Khamees (2021) and Al-Rawashdeh and Al Khattab (2020).
 
Findings: In this study, demographic variables of the AC, such as gender diversity, age, education, and experience, are expected to affect the effectiveness of the committee in fulfilling its monitoring and control functions or its supportive functions. For instance, a more diverse AC may bring different perspectives and enhance the quality of decision-making, whereas an experienced committee may have a better understanding of the company's operations and risks.
 
Research, practical & social implications: The study population comprised of all Jordanian industrial firms listed on the ASE for 5 years, from 2017 to 2021. Moreover, 55 industrial firms were included in the analyses. Analyses was used to analyze the panel data which was collected from the annual report were used to analyze the panel data.
 
Originality/Value: The fact, our current study is the first to inspect the influence of demographic variables of the AC on EM in listed companies on the ASE. Specifically, the study aims to examine the effect of AC size, independence, expertise, and diversity on EM practices in Jordanian firms.
Pelatihan Kader dalam Rangka Peningkatan Program Posyandu Remaja di Dadapan Kelurahan Sendangmulyo Kecamatan Tembalang Kota Semarang
Authors: Nurjanah Siti , Puspitaningrum Dewi , Mustika Dian Nintyasari
Published: August 2023

The problem of youth health is so complexity because they are in a periode of change from a child to an adult. If it is not solved so it will have an effect for the future and psychology. In Permenkes no 25, 2014 as Health policy showed that every youth had a skill to behave clean and healthy life and also socialize well in order to learn as well as grow optimally and become human resource qualitatively. One of the effort to alleviate the problem of youth is by forming an organization for youth that is named by Youth Integrated Healthcare Center (Posyandu Remaja). It has some activities such as counselling, sharing about health-acknowledgment. Youth Integrated Healthcare Center is a solution in social-community to increse the wealth and youth reproduction health. The purpose of community servicing is to training youth Integrated Healthcare Center and grow Youth Integrated Healthcare Center’s acknowledgement. The methode is Cadre training of Youth Integrated Healthcare Center, then giving education, discoursing, discussion and practicing to the cadre of youth Integrated Healthcare Center. The result of this activity is the increasing of cadre’s youth Integrated Healthcare center acknowledgement and the continuing youth Integrated Healthcare center’s activity at Dadapan Sendangmulyo. The conclusion of this activity is able to increse youth health at Dadapan Sendangmulyo on Tembalang in Semarang.
Uji Functional Suitability Dan Usability Pada Sistem Kendali Mesin 3D Print Berbasis IoT
Authors: Wijaya Akbar Sena , Suprianto Bambang , Buditjahjanto I Gusti Putu Asto , Baskoro Farid
Published: August 2023

Mesin cetak 3D merupakan mesin yang dapat memproses pembuatan objek tiga dimensi yang bersumber dari gambar digital yang telah dibuat sebelumnya dan banyak digunakan pada berbagai industri, utamanya pada tahap permodelan dan prototyping. Pemanfaatan mesin cetak ini memiliki kelebihan untuk menghemat waktu, menekan human error, dan mengurangi limbah produksi. Tujuan penelitian ini untuk melakukan perancangan, pembuatan, dan pengujian terhadap software dan hardware sistem kendali 3D print berbasis IoT pada laboratorium mikroprosesor. Prosedur penelitian ini meliputi persiapan, perancangan hardware dan software, pembuatan prototipe, dan pengujian alat. Alat ini dilakukan 2 jenis pengujian, pertama pengujian functional suitability dengan metode black-box testing yang dinilai dengan skala Guttman dan dihitung menggunakan matrik feature completeness. Pengujian kedua usability yang dihitung menggunakan skala Likert. Teknik yang digunakan untuk mendapatkan data menggunakan kuisioner online melalui google form. Hasil penelitian yaitu, sistem ini berhasil dibuat dengan menggabungkan hardware dan software dari 3 buah sub-sistem diantaranya sistem kendali daya, sistem monitoring daya, dan sistem remote pada mesin 3D print. Selain itu, hasil pengujian functional suitability mendapatkan nilai 0.93 artinya sistem yang telah dibuat berjalan dengan baik, diimplementasikan dengan spesifikasi yang sesuai, dan fitur berjalan sama dengan rencana. Sedangkan hasil pengujian usability didapatkan nilai sebesar 95.6%, di mana masing-masing aspek yaitu, aspek Learnability diklasifikasikan sangat layak, aspek flexibility diklasifikasikan sangat layak, aspek Effectiveness diklasifikasikan sangat layak, dan aspek Attitude diklasifikasikan sangat layak.

Kata Kunci: 3D Print, hardware, software, functionality, usability
Peramalan Daya Listrik Jangka Sangat Pendek pada Pembangkit Fotovoltaik (PV) Menggunakan Metode Deep Learning-Long Short Term Memory (LSTM)
Authors: Fadli Khoirul , Kartini Unit Three
Published: August 2023

Pembangkit listrik fotovoltaik (PV) menjadi salah satu solusi untuk mengatasi masalah kelangkaan energi dan mengurangi emisi gas rumah kaca. Metode prediksi untuk meramalkan daya output pada pembangkit PV secara akurat telah menjadi alat penting untuk memecahkan perencanaan PV dan masalah pemodelan, yang dapat mengurangi dampak negatif pada seluruh sistem tenaga dan meningkatkan stabilitas sistem. Tujuan dari penggunaan metode Deep Learning - LSTM dalam peramalan daya listrik batas waktu sangat pendek pada pembangkit fotovoltaik (PV) adalah untuk memperoleh informasi mengenai hasil peramalan daya listrik dalam waktu 2 jam setelahnya. Hasil penelitian ini menunjukkan pada percobaan pertama dengan nilai epoch 50 mendapatkan hasil akurasi peramalan pada Mean Squared Error (MSE) terbilang 0,0253. Pada percobaan kedua dengan nilai epoch 100 mendapatkan hasil akurasi peramalan sebesar 0,0210. Pada percobaan ketiga dengan nilai epoch 150 mendapatkan hasil akurasi peramalan sebesar 0,0190. Dapat disimpulkan bahwasannya semakin besar nilai epoch hasil akurasi peramalan semakin baik dan metode Deep Learning-LSTM ini cocok digunakan untuk memprediksi daya listrik pada pembangkit fotovoltaik karena dengan menggunakan metode ini bisa mendapatkan hasil akurasi peramalan yang kecil.

Kata kunci : Peramalan, Daya Listrik, Akurasi, Deep Learning, Long Short Term Memory (LSTM)
Perbaikan Unjuk Kerja Motor Tiga Fasa Sebagai Penggerak Konveyor menggunakan Fuzzy Logic Controller
Authors: Al Faruq Falihul Fajri , Endryansyah Endryansyah , Rusimamto Puput Wanarti , Baskoro Farid
Published: August 2023

Motor listrik bolak balik adalah salah satu jenis motor induksi 3 fasa yang memiliki kemampuan untuk menghasilkan energi mekanik dari energi listrik. Konveyor menggunakan motor induksi 3 fasa. Pada dasarnya, ketika terdapat perubahan pada beban, kecepatan motor juga akan berubah. Karena itu, tegangan dan frekuensi harus diatur untuk memastikan kecepatan tetap konstan. Tujuan penelitian ini adalah merancang pengendalian logika fuzzy untuk sistem pengendalian kecepatan yang digunakan untuk motor induksi tiga fasa yang bekerja sebagai penggerak konveyor. Tahap dalam penelitian ini yaitu perancangan fuzzy logic controller, perancangan simulasi menggunakan software matlab dan pengujian respon sistem dengan controller dan tanpa controller. Software yang digunakan adalah Matlab 2019b untuk perancangan fuzzy logic controller dan perancangan simulasi serta monitoring dalam bentuk grafik. Perancangan fuzzy logic controller pada motor induksi 3 fasa sebagai penggerak konveyor menggunakan metode Mamdani, parameter masukan logika fuzzy yaitu error dan ∆error dari putaran motor induksi 3 fasa, sedangkan parameter keluarannya adalah frekuensi dari motor induksi 3 fasa.  Hasil pengujian dengan beban konstan 100g (0,98 N.cm) menggunakan fuzzy logic controller didapatkan waktu tunak (settling time) pada 0,570 detik pada kecepatan 1793 rpm dan  error steady state (Ess) sebesar 0,3889%, Sedangkan hasil pengujian tanpa controller didapatkan waktu tunak (settling time) pada 0,670 detik pada kecepatan 1575 rpm detik dan error steady state (Ess) sebesar 12,5%. Pengaruh fuzzy logic controller untuk pengendali pada motor 3 fasa sebagai penggerak konveyor adalah mempercepat motor induksi menuju kondisi steady state atau waktu tunak (settling time) dan dapat memperkecil error steady state (Ess) pada kecepatan motor induksi 3 fasa.

Kata Kunci: motor induksi, sistem kendali, fuzzy logic controller
ALL-OPTICAL CARRY SKIP ADDER WITH THE HELP OF TERAHERTZ OPTICAL ASYMMETRIC DEMULTIPLEXER-BASED SWITCH
Authors: Bhattachrayya Arunava
Published: August 2023

The terahertz optical asymmetric demultiplexer (TOAD) or semiconductor optical amplifier (SOA)-assisted Sagnac switches have been used to construct an all-optical 4-bit carry skip adder. This design aims to satisfy the high speed and accuracy requirements of modern ultrafast digital transmission. Using a combination of an all-optical multiplexer and an all-optical full adder, we describe an all-optical carry skip adder. When compared to ripple carry adder and carry look-ahead adder, carry skip adder may be employed to create a fast arithmetical processing unit. Numerical simulation is used to develop and validate this theoretical model.
PHARMACOGNOSTIC STUDY OF ZIZIPHUS JUJUBA MILL. FRUITS
Authors: Y.V. Asaturov , O.A. Semkina , O.A. Babaeva , M.A. Dzhavakhyan
Published: August 2023

One of the priority tasks of Russian healthcare is the expansion of the range of medicinal products, including the integration of new plant-based preparations. To achieve this objective, intensive research is being conducted on the phytochemical analysis of new types of plant-based materials growing in the territory of the Russian Federation. Studies on representatives of the Ziziphus genus (Ziziphus Mill.) are being carried out both in our country and around the world, as there is significant interest in their potential use for the creation of new plant-based preparations. In our country, the most well-known medicinal plant of the genus Ziziphus is Ziziphus Jujuba Mill., the fruits of which contain a complex of biologically active substances with pronounced immunomodulatory, anti-inflammatory, and anti-ulcer activities. Until now, the species of the Ziziphus Mill. genus had not been widely used in scientific medicine in the Russian Federation. In this study, the fruits of Ziziphus Jujuba Mill. cultivated in the Krasnodar region of the Russian Federation were examined. In order to ensure the high quality of raw materials for the production of medicinal preparations, it was necessary to conduct pharmacognostic research on Ziziphus Jujuba Mill. fruits to determine the diagnostic characteristics and quality indicators of the materials. Microscopic methods, HPTLC, and UV spectrophotometry were used in the experimental research. The morphological and anatomical study of the fruits made it possible to establish distinctive diagnostic signs, which can be used to conduct reliable identification of Ziziphus Jujuba Mill. fruits for the purposes of using this type of raw materials for the preparation of plant-based medicinal products. The work was carried out in accordance with the topic of the research project FGUU-2022-0011 of the Federal State Budgetary Scientific Institution "All-Russian Research Institute of Medicinal and Aromatic Plants".
METHOD OF TRANSPLANTATION OF A COMBINED OSTEOPERIOSSTEAL GRAFT TO INCREASE THE VOLUME OF THE ALVEOLAR RIDGE BEFORE DENTAL IMPLANTATION (CLINICAL CASE)
Authors: N.Y. Taranova , S.A. Triandafilov , N.V. Lapina , E.S. Ovcharenko
Published: August 2023

One of the urgent problems of modern dentistry, and in particular implantology, is the prevention of bone tissue atrophy after removal of teeth from the area of bone periodontal pockets and inflammatory odontogenic neoplasms (radicular cysts), which must be replaced with osteoplastic preparations for the subsequent installation of implants in this area to replace missing teeth. his article is devoted to the description of a clinical case of applying the method of transplantation of a combined bone-periosteal autograft in a patient with atrophy of the alveolar process of the upper jaw in the vertical and vestibulo-oral directions in the zone of 22-24 teeth after removal of an extensive radicular cyst of the upper jaw from the 23rd tooth. The plasty of the alveolar process of the upper jaw before dental implantation was performed with a combined bone-periosteal autograft from the area of the external oblique line and the body of the lower jaw. The result of the operation was monitored using cone-beam computed tomography before, after the operation and 6 months after the manipulations to monitor the state of the bone tissue surrounding the implant and determine the density of bone structures. Before the operation, it was found that the density profile of the subsequent implantation zone was 1502 units palatally, 2014 units in the vestibular zone, and 1998 units in the 24 zone. 6 months after the operation, the density of bone structures was: palatal - 1563 units, vestibular in zone 2.2. teeth - 1358 units, in zone 2.4 teeth - 1603 units. The use of this original technique provides an increase in the efficiency of the implant installation in the area of the replaced bone defect.
CHARACTERISTICS OF DEMOGRAPHIC PROCESSES IN THE CHUKOTKA AUTONOMOUS OKRUG
Authors: A.L. Sannikov , R.V. Kubasov , A.A. Koroleva , E.V. Shalaurova , E.S. Pirogova
Published: August 2023

Current: a comparative analysis of demographic processes in the Arctic regions of Russia adjacent to the Northern Sea Route allows us to determine the main areas of improvement and development. The aim of this study was estimation of demographic prospects of the territory of the Chukotka Autonomous Okrug based on the results of the analysis of birth and death rates. Materials and methods: The main demographic indicators in the Chukotka Autonomous Okrug from 2012 to 2022 were analyzed. A dynamic observation was carried out, as well as a comparison with the average statistical values for the Russian Federation. The main source of information was the database sites of the Unified Interdepartmental Information and Statistical System and the Federal State Statistics Service. The results of the study and their discussion. During the last 20 years, there has been a downward trend in the population. In the Chukotka Autonomous Okrug, despite the relatively high birth rate, the population decline is at a fairly high level in comparison with the data on average for the Russian Federation. It is associated with the migration outflow of the population, high morbidity and mortality from various causes. One should pay special attention to the mortality rate in working age; in the Chukotka Autonomous Okrug it is much higher than the average in Russia. The peak of mortality in the Chukotka Autonomous Okrug was observed from 2017 to 2019. Significant demographic losses are also caused by high mortality from tuberculosis, sudden external causes (suicide, murder). The main factors adversely affecting demographic indicators are the peculiarities of behavior mainly associated with alcoholism, as well as a decrease in the social, physical and psychological well-being of the population of the Chukotka Autonomous Okrug. Conclusion. The high and long-lasting infant mortality rate in the Chukotka Autonomous Okrug in comparison with that in the Russian Federation requires a thorough study of the causes and the development of programs to improve the situation in the region.
COMPARATIVE EVALUATION OF THE ANTIOXIDANT ACTIVITY OF THE HERB AND ROOTS OF THE COMMON CHICORY GROWING IN THE TERRITORY OF THE ORENBURG REGION
Authors: I.V. Mikhailova , A.A. Sinegovets , K.S. Mochalov , K.A. Pupykina , N.A. Kuzmicheva , N.V. Vinokurova
Published: August 2023

The purpose of the work: to study the effect of water extracts of herb and roots of Cichorium intybus L., growing in the Orenburg region, on the processes of free radical oxidation in in vitro systems.
Materials and methods. The objects of the study were samples of C. intybus L. raw materials collected in 2020 in the Adamovsky, Belyaevsky, Buzuluksky and Tulgansky districts of the Orenburg region. The antioxidant activity of aqueous extracts from raw materials was determined by the method of registration of chemiluminescence on the device "Chemiluminomer KhLM-003" in systems simulating the processes of production of reactive oxygen species in the Central Research Laboratory of the Federal State Budgetary Educational Institution of Higher Education "Bashkir State Medical University" of the Ministry of Health of the Russian Federation . Statistica 10.0 for Windows (StatSoft, Inc.) was used for statistical processing.
Results. The analysis of the obtained results established that the samples of the roots of C. intybus L. growing in the Adamovsky district of the Orenburg region, as well as all the studied samples of the herb of C. intybus L., have antioxidant properties. It was found that the most pronounced antioxidant activity, expressed in the inhibitory effect of extracts from raw materials samples on chemiluminescence in model systems, is shown by the herb of C. intybus L., growing in the Buzuluksky district of the Orenburg region, and the roots of C. intybus L., collected in the Adamovsky district of the Orenburg region.
Conclusion. The herb of of Cichorium intybus L., growing in the Orenburg region, and the roots of Cichorium intybus L., collected in the Adamovsky district, can be considered as potential promising sources of natural antioxidants of plant origin.
HISTORICAL DEVELOPMENT OF THE INSTITUTION OF THE DEATH PENALTY IN RUSSIA
Authors: A.A. Konkin
Published: August 2023

The death penalty is a special social phenomenon, a special cultural and socio-psychological phenomenon, to which extensive philosophical, historical, legal and fiction literature is not accidentally devoted. The death penalty has always, always and everywhere occupied a special place in the public consciousness, it has always been given special attention, its topic knew no bounds of public interest. To this day, such punishment is the most severe, at the same time the most controversial kind.
Goals. A comprehensive author's study of the gradual development of the institution of the death penalty in Russia.
Methodology. In the course of the research, historical methods, methods of logical, statistical analysis were used.
Conclusions: A complete and accurate analysis of the formation and development of the institution of the death penalty from tsarist Russia to the USSR is given. The practice of applying punishment in the form of the death penalty is investigated. It is concluded that it is impossible to establish accurate statistical data about this punishment, since the criminal statistics of previous years were classified.
PENGARUH MODEL BLENDED LEARNING TERHADAP PRESTASI BELAJAR SISWA SMA NEGERI 1 PURWOKERTO DITINJAU DARI BERPIKIR KRITIS
Authors: Khotimah Sofiatul
Published: August 2023

Tujuan penelitian ini adalah untuk menganalisis pengaruh model blended learning terhadap prestasi belajar siswa SMA Negeri 1 Purwokerto ditinjau dari berpikir kritis menggunakan media edmodo. Pendekatan yang digunakan dalam penelitian ini yaitu penelitian kuantitatif. Metode penggumpulan data dilakukan melalui pretest dan posttest untuk mengetahui prestasi belajar siswa, sedangkan untuk kemampuan berpikir kritisnya menggunakan nilai keaktifan siswa didalam kelas. Data yang terkumpul kemudian di uji dengan Uji Normalitas, Homogenitas, dan Anova serta uji T untuk pretest dan posttest, sedangkan untuk data keaktifan di uji dengan Uji Regresi dan Uji Independent Sampel T-Test. Hasil Analisis Menunjukan bahwa (1) terdapat pengaruh positif antara model blended learning dengan prestasi belajar siswa; (2) terdapat pengaruh positif antara kemampuan berpikir kritis terhadap prestasi belajar siswa; dan (3) terdapat interaksi positif antara model blended learning terhadap prestasi belajar siswa.Kata Kunci: Model Blended Learning, Berpikir Kritis, Prestasi Belajar