bluuebunny/crossref_metadata_2025 huggingface dataset:
Theoretical model of random freight flow distribution in the conveyor transport line of the coal mine
Authors: Lubenets T. M , Koroviaka Ye. A , Snigur V. H , Tkachuk A. V , Rastsvietaiev V. O
Published: December 2023

Purpose. Increasing the efficiency of the conveyor transport system of the mine due to the application of rational parameters, which are calculated objectively on the basis of the reliable output data of random freight flow in the conveyor transport line, taking into account the velocity of minerals transportation, including a perfect theoretical model application of the freight flow distribution. Methodology. Complex research: - statistical studies on the actual distribution of random freight flow in the highly productive stages of the PSU Mine “n.a Heroiv Kosmosu” PJSC “DTEK Pavlohradvuhillia”; - description of histograms of the distribution of random freight flow by various indicative algebraic functions, normal and gamma distribution of a random variable and a specially constructed function with separately defined parameters of its branches; - analysis of research results regarding the correctness of the theoretical model of the distribution of random freight flow according to various criteria of genuineness, a center of grouping, amplitude, velocity of rise and fall, and deviation. Findings. A perfect theoretical model was built in the form of an indicative algebraic function, whose branches are described by the normal distribution law of a random variable with separately determined parameters. It describes well the distribution of random freight flow in the conveyor transport line of the mine and ensures the determination of its parameters by the methods of probability theory. Originality. A theoretical model of the distribution of random freight flow in the conveyor transport line of the mine has been obtained for the first time, which describes well various cases of its distribution, including symmetric and asymmetric ones, and provides the determination of the freight flow parameters by the methods of probability theory. Practical value. The actual value of the coefficient of nonuniformity of the freight flow in the conveyor transport line of the mine, which was determined by a perfect theoretical model, exceeds, by almost a quarter, the value inherent in the model accepted in practice, the normal law of the distribution of a random variable. The coefficient of nonuniformity of the freight flow in the highly productive longwalls of only the specified mine reaches a value of 2.012, which already exceeds the normative value limit for conveyor transport lines along horizontal and inclined preparatory workings of mining areas (2.0). Reliable initial data on the variation of the random freight flow in the conveyor transport line of the mine, which is substantiated by a perfect theoretical model of its distribution, have a positive effect on the calculation of its parameters and contribute to increasing the efficiency and reliability of the functioning of the conveyor transport system.
Use of backscattering ultrasound parameters for iron ore varieties recognition
Authors: Morkun V. S , Morkun N. V , Tron V. V , Serdiuk O. Y , Haponenko A
Published: December 2023

Purpose. Development of the method for recognizing the main mineral-technological varieties of iron ore in the deposits being developed by selecting an analytical model for the spectral characteristics of the received ultrasonic echo signals and quantitative assessment of their parameters. Methodology. The work uses methods for modeling the processes of propagation of ultrasonic waves in a randomly heterogeneous medium. The process of backscattering of ultrasound in mineral structures formed by inclusions of iron ore of various varieties and associated rock was considered. The estimated parameters of the spectral characteristics of the inversely scattered probing ultrasound pulse were studied. Findings. A method for recognizing the main mineral and technological varieties of iron ore of the deposit being developed, based on the parameters of the propagation of ultrasonic waves in the studied samples, was proposed. This is achieved by selecting an analytical model for the spectral characteristics of the received echo signals and quantifying their parameters. The amplitude of the echo signal and its spectral properties depends on the size and concentration of the scatterers, i.e., the structural and textural features of the iron ore sample under study. Taking into account these factors, the extracted parameters of the model were used to identify the main mineralogical and technological varieties of iron ore of the studied deposit. Originality. The proposed method for recognizing mineral-technological varieties of iron ore differs from the known ones in that the amplitude, central frequency, and bandwidth of the amplitude spectrum of the Gaussian parametric model of the measured echo signals are used as evaluation parameters. Practical value. The proposed scientific and technical solution allows for operational non-destructive control of the main mineralogical and technological types of iron ore in the process of its extraction and processing.
Data analysis solutions to improve blasting efficiency in mining
Authors: Hieu Dao , Loan Pham Thanh
Published: December 2023

Purpose. To build an identification model to determine the appropriate explosion parameters value with reasonable cost. To optimize blasting works design at each blast site with the calculation of delay time based on the model used. Methodology. Blasting for mining is an issue of utilizing the most of explosive energy in order to achieve the highest smashing ability and the smallest level of vibration. In modern explosive techniques, the total amount of explosive is divided into parts to detonate after differential time intervals. This solution creates interference between stress waves causing the durability of rock structures to be reduced and the blasting efficiency to be improved. Although delay time plays an important role in this method, so far its value is still calculated empirically at the blast site due to the irregular characteristic of the rock environment. Technical design parameters for explosion including delay time has been also determined from smart analysis software and simulation models. However, their applicability is limited because of high payments and strict implementation conditions. The method proposed in the study overcomes this drawback and its effectiveness is proven by the process of analyzing experimental data at Nui Beo Mountain of Vietnam. Findings. An identification model is developed based on the information including: explosion delay time value; average propagation speed of the vibration wave; maximum amplitude of the vibration wave. Originality. Basic data analysis software and an artificial neural network model are used. A new data analysis algorithm is established to determine the optimal explosion delay time value. Practical value. A simple and reasonable-cost solution is formed for improving the efficiency of blasting in mining.
Analysis and prediction of surface settlements during the digging of underground mining works (Algeria)
Authors: Morsli M. A. R , Berdoudi S , Hafsaoui A , Kanli A. I , Ferfar M
Published: December 2023

Purpose. To analyze, study and predict surface settlements during the digging of a tunnel in an urban area located in the Algerian capital and to take the necessary measures. Methodology. Based on the physical and mechanical parameters and the geological characteristics of the actual traversed layer, and taking into account the geometric parameters of the tunnel, the mechanical model is established, and the numerical simulation is designed to determine the settlement deformation and displacement of the overlying zone under mining disturbance. Findings. Due to the impact of the excavation works, the land will undergo large deformations such as collapse. So, it is necessary to take corrective measures to limit its effect on the surrounding environment and protect urban areas. Originality. The application of a complex of methods allowed providing a predictive assessment of the safety of mining workings in urban conditions. The study was conducted in two main stages; a geotechnical characterization in situ and in the laboratory to determine the necessary properties of the soil and rock mass used in our model, and in a second step, the development of feedback analysis using numerical modelling based on the data collected. Practical value. From this study, the results obtained seem to show vertical displacements that exceed international standards in urban areas (1/1000, which can induce significant ground movements and therefore an influence on the surrounding environment. As a solution, there is a possibility of reducing the deformations by improving the mechanical properties of the soil carrying the project using the Jet-Grouting technique – the technique has shown its effectiveness in reducing settlements with a reduction rate of 78 %.
A methodological approach to assessing the durability of welded structures of screens using SolidWorks Simulation software
Authors: Shkut A
Published: December 2023

Purpose. To develop methodological recommendations for studying the characteristics of screen welded assemblies of ГВЧ-31 С type using specialized tools of the SolidWorks Education Edition software package. Methodology. The methodology for analyzing welds when designing a vibrator fixation system is based on the use of current software tools, in particular SolidWorks Simulation in combination with SolidWorks Motion, as well as the HOT SPOT STRESS technology. To analyze the accuracy of determining the dynamic loads arising during the screen operation, the results of modeling using the SolidWorks Motion program are compared with those obtained by traditional methods using the Lagrange equation of the second kind. The computation discrepancy is within 10 %. Findings. It has been determined that it is rational to analyze welds using the SolidWorks Education Edition software shell, taking into account the least profitable option, namely, when their edges are not finished. Furthermore, during solid-state modeling, the formation of a cavity in the weld is simulated in the form of a gap between the welded elements. The stress-strain state analysis of welded constructions using the Finite Element Method has revealed that when the computational mesh cell size is reduced, the stress value increases significantly, which indicates the result singularity and the need for further application of the HOT SPOT STRESS method. In the course of research, it has been determined that the highest stresses in welds occur on the central rib. The duration of use of welded joints is more than 2·106 cycles. Originality. For the first time, the methodology has been substantiated for determining the service life of welded elements of screen constructions using the latest computer analysis tools. The method makes it possible to calculate the dynamic forces arising in constructions performing oscillatory movements, as well as to analyze the stress-strain state of welds using the HOT SPOT STRESS technology and assess their service life. Practical value. It has become possible to implement the method for calculating the stress-strain state of welds in the design of a vibrator fixation system and assessing their service life, which is important for analyzing and determining the parameters of various vibrating machines. The results derived from the investigation were incorporated by the local entity, Ukrprommineral, to modernize the screens.
Accounting for a positive, negative and zero sequences power in a three-phase unbalanced electrical system
Authors: Bialobrzheskyi O , Postil A , Yakimets S
Published: December 2023

Purpose. Based on the instantaneous electrical power of a three-phase asymmetric system of sinusoidal periodic current, to determine positive, negative, zero-sequences active and reactive power, as well as invariance power factor. Methodology. In the unbalance case in three-phase electrical system, the electrical energy quality is evaluated by means on voltage and current positive, negative, zero-sequences. At the same time, similar components of active and reactive power have not received practical distribution. But it is precisely in terms of power that electricity is accounted for. The instantaneous power orthogonal components in the time domain are determined using the symmetrical components of voltage and current. Active, reactive powers of positive, negative and zero-sequences are allocated. The result obtained has the property of representativeness, which most of the known results lack. Findings. The three-phase system’s instantaneous power components are analytically determined, including the amplitudes of the oscillating power components. The need to take into account the oscillating instantaneous power components has been proven by means of a graphical interpretation of a special case of the three-phase system mode. As an integral indicator that takes into account the oscillating components of the three-phase system instantaneous power, its root-mean-square value over the repetition period is used. Originality. By calculating the transformer efficiency of the studied model according to the active power positive sequence and the same indicator according to the active power as a whole, it was established, that the component sequence separation affects the results of calculating the generalized indicators, including the power transmission system objects. This can lead to erroneous judgments about the efficiency of the specified facilities functioning. Practical value. The invariance power factor was used to characterize the electrical energy quality level of a three-phase sinusoidal current system in an unbalanced mode.
Legal support of labor protection standards under martial law
Authors: Ostapenko L , Yesimov S , Prots I , Marych N , Tarnavska M
Published: December 2023

Purpose. To study the peculiarities of legal provision of labor protection issues in crisis conditions, in particular in conditions of military operations, to propose conditions-indicators and additions to legislative provisions for the improvement of legal regulation in this area and harmonization of the labor law norms introduced during the war with the existing norms of legislation. Methodology. General and special methods of cognition are used: content analysis – to establish that even indirect influence of military actions is a significant factor in industrial injuries; formal-legal method – to substantiate the need to take into account impact of complex risks on employees’ life and health; special-legal method – to propose proactive approach and system of local regulatory acts; logical generalization – to establish that military actions cause new grounds for the employer’s legal responsibility. Findings. It is indicated that peculiarities of legal provision of labor protection issues in the conditions of martial law require the introduction of changes and additions. It is indicated that the influence of complex risks in cases of threats to employees, which include industrial and military circumstances, needs legal clarification. The legal substantiation for the need to take into account the impact of complex risks in case of industrial injury cases is provided. Legal tools for assessing impact of complex risks, in particular re-certification of workplaces, are proposed. Originality. A proactive approach is proposed for leveling consequences of risks to working conditions by preparing employees for possible threats by implementing systematic, echeloned labor protection policy. The system of local normative acts of the enterprise should be the instrument of this policy. Indicator conditions and additions to legislative provisions are proposed. Practical value. The developed recommendations will contribute to the legal regulation of labor protection and the harmonization of new norms of labor law with the existing norms of legislation in the field of labor protection.
Methodology of creation and development of information systems for technological safety of mining facilities
Authors: Holinko O , Yuldasheva N , Zhartay Z , Mirzoieva T , Petrychenko O , Hulevets V
Published: December 2023

Purpose. To develop methodological approaches to the process of informatization of technological security (TS) and to propose a project of step-by-step development of the architecture of information system (IS) of TS, which will contribute to effective integration of digital and mining technologies. To develop a mathematical model for finding the number of sensors required for probabilistic assessment of the concentration gradients of hazardous gases. Methodology. General and special methods of knowledge are used: structural analysis – to establish the structure and tasks of IS of TS; logical generalization – for formation of methodological system of directions of TS information measures; system analysis – to establish synergistic effect of complex implementation of the indicated directions; scientific abstraction – for development of a project for IS architecture derivation; mathematical formalization – for development of mathematical model for estimating gradients of concentration gases and the number of sensors. Findings. A project for the phased development of IS architecture of mining facilities based on the implementation of diffusion principle is developed, which will allow solving a complex of issues: integrated monitoring of danger of gas environment of underground structure for detection of gas traps and permanent determination of concentration gradients of hazardous gases, implementation of intelligent safety loops using analytical resources of technological mining process. A methodological system of directions for diffusion implementation of TS information measures is formed. The use of the method of system analysis made it possible to point out the synergistic effect of the complex implementation of the directions of implementation of TS information measures. Originality. A project for the phased development of the information system architecture of the technological safety of mining enterprises has been developed. A mathematical model has been developed to estimate the concentration gradients of hazardous gases and the number of sensors to ensure the appropriate level of probability of finding a sensor in each cell of the underground mine. Practical value. The methodological approach makes it possible to form an IS that implements a comprehensive approach to ensuring the appropriate level of technological safety of mining facilities.
Legal provision of social protection of employees in the conditions of martial law
Authors: Vakariuk L , Bernaziuk O , Blok N , Serdiuk O , Zilnyk N
Published: December 2023

Purpose. To study changes in legal provisions regarding social protection of employees because of legal restrictions put into effect during martial law. To develop recommendations for clarifying the legal provisions of specified restrictions. To propose ways and directions of strengthening protection of the social rights of employees (SRE). Methodology. General and special methods of cognition are used: hermeneutic method – for the interpretation of legal provisions of legislative acts, which regulate legal provision of SRE; analysis and synthesis – to study changes in legal provision of SRE; induction and deduction – to develop recommendation on clarifying the legal provisions of normative restrictions on SRE: analytical, formal legal and special legal methods – to determine the ways and directions of strengthening protection of SRE. Findings. The changes in the legal framework for the protection of SRE because of legal restrictions put into effect during martial law are studied and presence of some inconsistencies in legal provisions is indicated, which requires clarification of new legal concepts and the application of indicating norms. The need for a well-founded implementation of a dispositive approach to rules for protection of SRE is pointed out and as well as for an imperative approach to the rules that the employer must follow. It is proposed to weaken the tendency to oust collective agreements from the legal field. Normalization of feedback between legislators and public organizations and trade unions is proposed. Originality. Insufficiency of the legal conditions-indicators in normative-legislative field regarding introduction of SRE narrowing and limitation of the legal possibilities for their protection are pointed out. Recommendations to clarify the legal provisions of regulatory restrictions of SRE are developed. Ways and directions of strengthening the protection of SRE are proposed. Practical value. The introduction of indicating norms and the implementation of the proposed recommendations will contribute to the strengthening of SRE protection.
Peculiarities of truck transportation in wartime conditions
Authors: Minakova S , Volobuyeva T , Minakov V , Minakova O , Tselikova A
Published: December 2023

Purpose. To identify the peculiarities and problems of automobile transport (AT) in the war conditions (WC) in Ukraine. To propose ways to solve the mentioned problems, to eliminate reasons that lead to an increase in the risks for AT. To develop a mathematical model for optimization of transportation by AT under unclear military risks. Methodology. The method of abstract-logical analysis made it possible to establish peculiarities and problems of AT in WC and propose ways to solve these problems, to eliminate the causes that lead to increase in risks of AT. The method of analysis and synthesis is used to determine the circumstances of the narrowing of the influence of institutional approaches on the optimization of AT and to propose a combination of direct and indirect institutional influence. The method of comparative analysis finds that the unevenness of risks on transport routes leads to the imbalance of transportation and proposes measures to reduce the level of imbalance, to approach optimal results as well as proposes the formation of multi-stage transportation, which will ensure the variability of transport chains due to fragmentation and an increase in the level of organization of transport networks. Mathematical methods were applied to develop a model for optimization of AT in WC. Findings. The key tasks of building a strategy of a highly adaptive transport system were formulated and its peculiarities were indicated. Circumstances of narrowing the influence of institutional approaches to AT in WC were established and a combination of direct and indirect institutional influence was proposed, which will be based on the developed mathematical model. It is established that unevenness of risks on transport routes leads to imbalance of transportation and measures to reduce the imbalance are proposed. The formation of multi-stage transportation is proposed for variability of transport chains, organization of transport networks and ensuring the reliability of AT. Originality. To take into account risks with a significant level of uncertainty, a strategy for building a highly adaptive transport system was proposed, and a mathematical model for optimization of AT in the presence of uncertain military risks was developed. Practical values. The peculiarities and problems of AT in the conditions of the war in Ukraine are given. Ways to solve the mentioned problems, to eliminate the causes that lead to increase in risks for AT are proposed.
How to Build a Successful Career
Authors: Beba E. , Mironova I.
Published: December 2023

The purpose of this interview is to inspire ENERPO journal readers — particularly the young professionals at the start of their careers — to approach their professional development strategically, choose their path mindfully, and be happy at work.

Цель данного интервью — вдохновить читателей журнала ENERPO, особенно молодых специалистов, которые находятся в начале своей карьеры, на то, чтобы они стратегически подходили к своему профессиональному развитию, осознанно выбирали свой путь и были счастливыми на работе.
Understanding Climate Transition Plans and Strategies for Russian Companies
Authors: Teplova O. , Ivanov A. , Alieva M.
Published: December 2023

A critical part of the climate agenda is to drive sustainable development in general and ESG-practices of financial markets in particular. International standard-setters and national regulators have professed support for incorporating the issues of climate change into the disclosure standards, acknowledging that a climate plan and/or strategy is an instrument to raise capital in debt markets. The aim of the study is to examine the concept of a climate transition plan and its basic elements as part of a broader climate strategy, while also to evaluate the progress of sampled Russian companies towards developing such climate transition plans (strategies) and disclosing climate-related information. The paper finds a lack of convergence in defining the concepts of a climate strategy and transition plan among Russian companies, as well as insufficient climate-related disclosures in line with national and international requirements. To address these issues, Russian enterprises should continue developing emissions reduction actions, bringing increased transparency to their climate projects, setting robust targets, and improving governance practices within their businesses. Additionally, policy-makers could underpin companies’ efforts by developing a convenient yardstick for defining climate transition plans and strategies that are used in transition debt issuance.

Климатическая повестка не перестает быть драйвером устойчивого развития, в том числе для финансовых рынков. Международные регламентирующие организации и национальные регуляторы направляют свои усилия на стандартизацию информационных потоков, связанных с климатом, чтобы придать импульс «зеленому» финансированию. Целью исследования является изучение концепции плана климатического перехода и его основных элементов как части стратегии климатического перехода, а также оценка прогресса российских компаний в разработке таких планов (стратегий) и в раскрытии информации, связанной с климатом. Как показал проведенный анализ российских компании, многие из них находятся на разных этапах пути к раскрытию климатических данных, в том числе в формате планов и стратегий. Результаты исследования также указывают на отсутствие единого подхода к определению этих ключевых документов среди компаний в России и на недостаточный уровень раскрытия климатической информации для соответствия требованиям регламентирующих организаций. На практике компании активно участвуют в проектах по снижению выбросов парниковых газов, увеличивая прозрачность климатической информации и совершенствуя системы корпоративного управления. Тем не менее этого пока недостаточно, чтобы выпустить инструменты для управления климатическими рисками, такие как адаптационные облигации и облигации климатического перехода. Написание руководства по составлению климатических планов и стратегий регулятором помогло бы поддержать и систематизировать усилия компаний, открывая для них новые возможности по привлечению финансирования.
Column of the Editor-in-Chief: What’s New in the Anniversary Issue
Authors: Oshchepkova A.
Published: December 2023

2023 is a very remarkable year for us at ENERPO, and not only because we are celebrating the 10th anniversary of our journal, launched in 2013. This very year also saw the first wave of our students graduating from the ENERPO educational program.

2023 год – очень знаменательный год для ЭНЕРПО, и не только потому, что мы отмечаем 10-летие нашего журнала, созданного в 2013 году. В этом же году первая волна наших студентов окончила обучение на образовательной программе ЭНЕРПО.
New Book by the ENERPO Research Center: Russian Coal in the Era of Climate Change
Authors: Lomagin N. , Mironova I. , Titov M. , Oshchepkov M.
Published: December 2023

In 2023, a team of experts of the ENERPO Research Center including Nikita Lomagin, Irina Mironova, Maxim Titov and Michael Oshchepkov has completed a book on past, present and future of the Russian coal industry. The book was published by the Palgrave in November.

В 2023 году команда экспертов Исследовательского центра ЭНЕРПО в составе Никиты Ломагина, Ирины Мироновой, Максима Титова и Михаила Ощепкова завершила работу над книгой о прошлом, настоящем и будущем угольной отрасли России. Книга была опубликована издательством Palgrave в ноябре.
Enhancing usable appliances for energy integration with solar power
Authors: Chandra Debnath Sumon , Yeasmin Nilufa , Siddika Ayesha , Sultana Munira , Bashar M S , Rahaman Mashudur , Islam Suravi , Tabassum Samia
Published: December 2023

Solar energy is one of the prospective sources of Bangladesh which can meet energy demand and provide a contribution to sustainable development goals. Besides the use of the solar system in electricity generation for households, some other sectors are also using photovoltaic in irrigation, street lighting, water pumping, etc. This article introduces the idea of some other applications of solar photovoltaic systems. Here, solar backpack, farm hat, and grass cutter are designed and fabricated to utilize solar energy for recharging storage systems as well as being operated directly in the daylight. Solar powered charging backpack uses a solar panel of 5 W/17 V capacity at the front side of the backpack with a 5 V output voltage which can charge mobile phone or rechargeable battery. The results clearly showed that it is capable to charge the phone and the charging level of mobile phone successfully raised from 22% to 88% within 5 hours by putting it in direct sunlight on cloudy weather. This article also explained solar farm hat which is very simple but effective for our farmers. Light weight solar powered fan (1.92 W/12 V DC) placed on the top of the hat which is used to cool their face. Lighting (4 ultra-bright 3 V LEDs) and battery charging system are also attached in this system. Further, Solar powered grass cutter machine is designed and developed mainly considering the air pollution using fossil fuels which can also be a usable solar energy appliances. These appliances can keep role to build a eco-friendly system.
Bangladesh J. Sci. Ind. Res. 58(4), 191-200, 2023
Molybdenum(VI) complexes of N, N′-bis isatin diamine Schiff base: Synthesis and characterization
Authors: Rahman Abul Kalam Md Lutfor , Sarker Aparna , Bashir M Nayamul , Hossain M Lokman
Published: December 2023

Schiff base ligand of N, N′-bis isatin diamine was synthesized from various diamine and isatin through condensation reaction in 1:2 molar ratio. Mo(VI) complexes of isatin-diamines were synthesized by the reaction between the sodium molybdate dehydrate and N,N' bis isatin diamines with the reflux method. The synthesized ligand and complexes were characterized using spectroscopic techniques. The FT-IR band of azomethine group at 1600- 1610 cm-1 indicated the formation of the ligand. The UV-vis spectra clearly indicated that the prepared complex is a genuine Mo(VI) with d0 electronic configuration. The formation of a coordination bond was revealed by the downfield chemical shift of the complex in the NMR data as compared to the ligand. The UV results were corroborated by molar conductance data, which demonstrated their non-electrolytic character. The experimental evidence primarily supported the synthesis of both ligands and corresponding Mo(VI) complexes.
Bangladesh J. Sci. Ind. Res. 58(4), 201-208, 2023
Phenolic content and antioxidant capacity of Lagerstroemia speciosa (Banaba) and Blumea balsamifera (Sambong) herbal teas sold on-line in the Philippines: A cost-effectiveness analysis
Authors: Deocaris Custer C , L Micor Jose Rene , Zhang Muxi , Alinsug Malona V , E Mojica Elmer Rico
Published: December 2023

Herbal teas are widely consumed for their health benefits. In this study, the phenolic content and antioxidant capacity of six commercially available banaba (Lagerstroemia speciosa) and sambong (Blumea balsamifera) herbal teas were analyzed. The antioxidant activity was measured using DPPH and ABTS assays, with L. speciosa teas exhibiting higher activity than B. balsamifera teas. The phenolic content was determined using the Folin-Ciocalteu method and showed a direct correlation with antioxidant activity. The market prices based on unit phenolic content and antioxidant activity varied widely with different brands sold online indicating the need for better quality control of the teas analyzed.
Bangladesh J. Sci. Ind. Res. 58(4), 265-270, 2023
Biofertilizer potentials of Rhizobium leguminosarum on two common tropical vegetable plants Talinium triangulare (waterleaf) and Telfairia occidentalis (pumpkin)
Authors: Eze V C , Okoronkwo E C , Ngene A C , Odo E S
Published: December 2023

This study explored the biofertilizer capabilities of Rhizobium leguminosarum on two tropical vegetables, Talinum triangulare (waterleaf) and Telfairia occidentalis (pumpkin). The microorganisms were isolated, characterized, and inoculated onto activated charcoal carriers at varying concentrations for each vegetable, with controls using sterile activated charcoal and N.P.K fertilizer. After 28 days, growth indices including plant biomass, height, and mean leaf area were evaluated. Results showed significant growth improvements with Rhizobium leguminosarum, ranging from 107.77% to 286.78% for waterleaf and 166.52% to 358.26% for pumpkin, surpassing N.P.K fertilizer. Leaf areas also increased significantly, with Rhizobium-inoculated vegetables outperforming chemically fertilized ones. While the impact on plant height was relatively lower, this research highlights the potential of Rhizobium leguminosarum as a fertilizer for enhancing waterleaf and pumpkin growth. Future studies should expand on these findings in different vegetable types and environmental conditions to validate real-world field applications.
Bangladesh J. Sci. Ind. Res. 58(4), 231-240, 2023
Improvement of in vitro dissolution profile of poorly aqueous soluble anti-parasitic agent ivermectin using novel hydrophilic polymeric carriers
Authors: Rahman Tanvir , Abdurrahim Md , Afrin Rintu Koma , Sarkar Md Raihan , Kabir Md Alamgir , Islam Dipa , Hasanuzzaman Md
Published: December 2023

Ivermectin (IVM), a BCS Class II drug with weak water solubility, has minimal oral absorption and dissolution. This study aims to enhance the dissolution profile of IVM by performing solid dispersion methods using four hydrophilic polymers: Kollicoat IR, Kollidon 90F, poloxamer 407, and hydroxypropyl methylcellulose (HPMC). The solid dispersion formulations (SDF) were made through physical mixing, solvent evaporation, and melt solvent/fusion. Using three ratios of IVM and hydrophilic carriers (1:1, 1:2, and 1:3), the cumulative release rate of IVM from formulations formed by physical mixing, solvent evaporation, and fusing was much larger than pure IVM (10%). IVM release rates from formulations including Poloxamer 407, Kollicoat IR, and HPMC polymers were 76% (fusion technique), 69% (physical mixing), and 47% (solvent evaporation method). The research demonstrated that fusion optimized drug solubility better than physical mixing and solvent evaporation. The research found that SD of weakly water-soluble IVM with Kollicoat IR/Poloxamer 407 improves its in vitro dissolving profile much better.
Bangladesh J. Sci. Ind. Res. 58(4), 209-220, 2023
Identifikasi Faktor Pendukung Pemasaran Berbasis Digital pada Produk Sepatu Lokal
Authors: Ikhwana Andri , Husnayanti Husnayanti
Published: December 2023

Produk sepatu lokal Garut dengan berbahan dasar kulit ini menjadi salah satu ciri khas dan menjadi ikon dari suatu daerah dihadapkan dengan persaingan di pasar global. Sehingga produk lokal dituntut memiliki daya saing global agar dapat memperluas pemasaran produk sepatu lokal tersebut. Dengan internet akan menjadi salah satu peluang yang dapat dimanfaatkan dalam proses pemasaran produk sepatu lokal, karena internet dapat dikases kapanpun dan dimanapun dan pemasaran dapat dilakukan dengan berbagai media digital. Namun pemasaran digital juga tidak terlepas dengan apa yang menjadi factor pendukung dalam melakukan pemasaran berbasis digital tersebut. Tujuan penelitian ini yaitu untuk mengetahui faktor pendukung pemasaran berbasis digital pada produk sepatu lokal dan mengetahui strategi pengembangan yang harus dilakukan dalam melakukan pemasaran tersebut. Metode penelitian yang dilakukan yaitu mix method dengan menggunakan analisis multivariate yaitu analisis faktor dengan menyebarkan kuisioner kepada 100 responden dan pengambian sampel diambil secara acak, selanjutnya dilakukan strategi pengembangan dengan metode Bisnis Model Canvas (BMC). Hasil dari analisis faktor tersebut yaitu terdapat 9 faktor baru yaitu layanan informasi, kenyamanan melakukan transaksi, promosi pejualan, fleksibilitas, atractievness (daya tarik), jamian kualitas, layanan pada media digital marketing, strategi persaingan harga dan kualitas harga. Rekomendasi strategi pengembangan pemasaran bebrbasis digital untuk memasarkan produk sepatu lokal yaitu dengan menambah alamat website pada elemen Chanel, penambahan layanan informasi berupa link yang terhubung ke sosial media pada Costumer Relationship, penmabahan kenymanan saat melakukan transaksi dan fleksibilitas pada Value Propotion, pemambaahan pada media digital pada elemen key activites, penambahan ahli IT pada Key Resouce, penambahan Interenet dan brand ambasandor pada key partners dan penambahan biaya jasa internet dan brand ambasandor pada Cost Structure sehingga revanue Stream diperoleh dari hasil penjulan pemanfaatan media digital marketing.
Perancangan Usaha Pemanfaatan Limbah Kulit Pepaya Menjadi Produk Papain untuk Pelembut Daging
Authors: Hakim Budi Lukman , Taptajani Dedi Sa'dudin , Ferdiansyah Riki
Published: December 2023

UMKM di Indonesia memiliki kontribusi signifikan terhadap GDP, dengan kulit pepaya menjadi salah satu inovasi dalam sektor UMKM sebagai bahan pelembut daging. Penelitian ini dilakukan dalam analisis perancangan perusahaan yang ditinjau dari aspek kelayakan dalam pengolahan kulit pepaya menjadi produk papain, berdasarkan literatur yang menunjukkan efektivitas papain sebagai pelembut daging. Limbah kulit pepaya yang mengandung papain bisa menjadi tepung dan tidak merubah perannya dalam melembutkan daging, cara pembuatannya melalui proses pengeringan dan tidak terlalu rumit sehingga dapat menjadi salah satu cara tepat guna dan selain itu untuk bahan baku limbah kulit pepaya mudah untuk didapatkan dengan memanfaatkan limbah yang di hasilkan dari salah satu pabrik manisan yang terbuat dari pepaya muda di Garut. Berdasarkan hal tersebut dibuatlah penelitian perancangan usaha pemanfaatan limbah kulit pepaya untuk pelembut daging serta untuk mengetahui dari aspek kelayakan. Hasil menunjukkan bahwa produk papain yang dihasilkan dari 100% kulit pepaya memenuhi kriteria yang diharapkan. Aspek pasar di Kabupaten Garut menunjukkan potensi bisnis yang menjanjikan melihat kebutuhan pasar pemasukan daging kepasar kabupaten Garut sebanyak 224,66 ton/tahun dengan kebutuhan produk papain pelembut daging diperkirakan sebanyak 748,866 kg/bulan. Aspek teknis dalam penggolahan produk papain menggunakan metode pengeringan dan dalam evaluasi aspek finansial melalui perhitungan biaya bahan, investasi, HPP, BEP, PP, IRR dan ROI menegaskan bahwa usaha ini layak untuk dijalankan dengan peluang pertumbuhan yang signifikan di masa depan.
Perencanaan Perbaikan Kualitas Pelayanan di Institut Teknologi Garut
Authors: Aulawi Hilmi , Kurniawati Rina , Sunarya Agi Ferdiansyah
Published: December 2023

Tujuan dari penelitian ini membuat Gambaran kepuasan mahasiswa tentang kualitas pelayanan di Institut Teknologi Garut (ITG) dan membuat rencana perbaikan bagi ITG dalam proses melakukan pelayanan. Hal ini dilakukan dengan metode service quality yang bertujuan untuk membuat Gambaran kepuasan mahasiswa dan quality function deployment untuk membuat rencana perbaikannya. Untuk perencanaan perbaikan dilakukan penyebaran kuesioner terhadap mahasiswa ITG dari angkatan 2019 – 2023 yang populasinya 1427 dengan sampel 100 mahasiswa dengan teknik pengambilan sampel proportionate Stratified Random Sampling. Hasil penelitian menunjukan bahwa ITG masih belum memenuhi harapan mahasiswa untuk pelayanan yang diberikan. Untuk memenuhi harapan mahasiswa untuk pelayanan didapatkan lima prioritas pelayanan untuk diperbaiki dengan sebanyak tujuh respon teknis pihak ITG. Untuk memperbaiki kualitas pelayanan dilakukan dengan mengidentifikasi kebutuhan untuk setiap atribut pelayanan yang ada.
Perancangan Usaha Pengolahan Ikan Nila Presto
Authors: Hakim Budi Lukman , Hayat Encep Jianul , Setiawan Dede
Published: December 2023

Perancangan perusahaan merupakan kegiatan yang dapat memberikan petunjuk dalam menjalankan sebuah perusahaan, serta mengidentifikasi terhadap peluang serta menganalisa dan mengevaluasi hal-hal yang mempengaruhi target Perusahaan. Perancangan perusahaan yang tertuju pada perencanaan aspek teknis melakukan uji coba produksi untuk memastikan efisiensi dan kualitas produk dengan penggunaan kombinasi metode design eksperimen dan metode BORDA, serta menggambarkan pemetaan alur produksi dengan peta proses operasi (PPO). Aspek pemasaran mencakup analisis pasar dan segmenting, targeting, dan positioning. Aspek organisasi usaha dan kebutuhan sumber daya manusia juga diperhitungkan. Selain itu, Pada aspek hukum dan aspek lingkungan juga dievaluasi berdasarkan regulasi pemerintah. Sedangkan studi kelayakan merupakan proses penilaian yang dilakukan untuk menentukan apakah suatu proyek, usaha, atau kegiatan memiliki kemampuan dan layak dilaksanakan. Studi kelayakan meninjau analisis keuangan yang menunjukkan potensi menguntungkan dalam usaha, dengan indikator kelayakan positif pada perhitungan cash flow, payback period dihasilkan selama 7 bulan 16 hari, Net Present Value (NPV) positif, dan Internal Rate of Return (IRR) 9.06%, melebihi nilai MARR sebesar 5.75%. Sehingga perancangan usaha ikan nila presto ini layak untuk dijalankan.
Perencanaan Peningkatan Kualitas Produk Kasur Karpet dengan Metode Kano dan House of Quality
Authors: Chandrahadinata Dody , Taptajani Dedi Sa’dudin , Irsyadilhaq Imam Nursalam
Published: December 2023

Ikmal Surpet merupakan perusahaan yang memproduksi Kasur Karpet, Visi dari perusahaan yaitu menjadikan perusahaan dibidang kasur yang unggul dan berkualitas sedangkan untuk Misi nya itu sendiri mempertahankan dan meningkatkan kualitas produk lokal yang unggul. Sejalan dengan Visi dan Misi Perusahaan maka tujuan penelitian ini yaitu Mengetahui atribut - atribut apa saja yang perlu diperhatikan, dipertahankan dan ditingkatkan mengenai tingkat kepuasan dan kualitas dari produk surpet (kasur karpet). Merencanakan peningkatan kualitas produk surpet (Kasur karpet). Metode Kano digunakan untuk mengetahui atribut apa saja yang perlu diperhatikan, dipertahankan dan ditingkatkan. Metode House of Quality digunakan untuk membuat usulan perbaikan. Hasil penelitian menunjukan bahwa terdapat dua atribut yang perlu diperhatikan yaitu: produk memiliki jahitan yang rapih dan desain produk memiliki ciri khas tersendiri, atribut yang perlu dipertahankan terdapat lima atribut yaitu : produk memakai bahan baku yang berkualitas, kain pelapis terasa empuk & lembut, produk dapat bertahan lama, desain produk yang bervariasi, dan desain produk menarik., dan atribut apa yang perlu ditingkatkan terdapat dua atribut yaitu : produk surpet fleksibel, dan memiliki ukuran sesuai kebutuhan. Untuk merencanakan peningkatan kualitas produk kasur karpet didapatkan sembilan atribut yang akan menjadi prioritas perbaikan dengan respon teknisnya masing-masing.
STRATEGI PENDIDIKAN LITERASI DIGITAL YANG KREATIF DAN MENYENANGKAN DI PEDESAAN
Authors: Aisyah Risa , Sawaludin Yunus , Vergania Ripani , Mashfufah Shofiyyatul , Fauzi Irvan Rizki , Nasir Muhammad , Azahra Sarah , Alim Ali Ahmad Nur , Raysona Mochamad Fikar , Sari Savina Tika , Nirwana Luki Ahmad , Nurhalizah Alya Adha , Fauzyah Salma , Nugraha Rifky Surya , Doank Herdi , Khadafi Muhammad Habil , Nuriman Nuriman , Agnia Pahrul Rizal Yasvin , Solehudin Bayu , Fachrezi Muhamad Daffa
Published: December 2023

Penelitian ini membahas penerapan strategi pendidikan literasi digital yang kreatif dan menyenangkan di desa Sukasenang. Tujuannya adalah untuk meningkatkan pemahaman literasi digital peserta didik, mengembangkan keterampilan yang dibutuhkan dalam masyarakat teknologi, dan menciptakan pengalaman belajar yang menyenangkan. Metode pembelajaran yang digunakan adalah model jigsaw, di mana peserta didik bekerja dalam kelompok kecil dengan beragam kemampuan. Program ini menggunakan media tulis dan audio visual untuk mendukung pemahaman peserta didik. Metode yang digunakan adalah metode pendekatan deskriptif kualitatif dengan 4 jenis tahapan kegiatan yang telah dilaksanakan, terdiri dari: tahap sosialisasi program, tahap pelatihan, tahap pengimplementasian, dan tahap evaluasi. Hasil evaluasi menunjukkan bahwa metode pembelajaran yang diterapkan oleh KKN kelompok 17 dihargai oleh peserta didik, dengan 85% peserta didik menyukainya. Namun, masih ada tantangan dalam meningkatkan minat peserta didik dalam proses belajar. Program ini berpotensi memberikan dampak positif pada pengembangan literasi digital di pedesaan dan metode pembelajaran yang inovatif. Diharapkan bahwa keberlanjutan program ini akan membantu peserta didik lebih aktif dalam belajar literasi digital dan mendorong inovasi dalam pendidikan. Penelitian ini menunjukkan bahwa penerapan strategi pendidikan literasi digital yang kreatif dan menyenangkan dapat menjadi alternatif yang efektif dalam meningkatkan literasi digital di lingkungan pedesaan.
PENERAPAN KAWAL DESA UNTUK KEBUTUHAN TATA KELOLA DESA SIRNAGALIH BAYONGBONG
Authors: Mulyani Asri , Juliansyah Fauzan Romi , Febrianti Tiara , Rengganis Nadia Fauziah , Saparudin Hopid , Slamet Bagus , Latif A. Abdul , Haolilah Siti , Fathon Ahmad , Wahdaniah Hamidah Nur , Ramdani Idham , Putri Elsinta Ismawati , Jamiludin Irfan , Rahayu Maulida Fasha , Saadah Roro , Alfiansyah Dandan , Ahzam Faiq Muhammad , Alhakim Much Kahfi , Nurpajar Dini Siti , Gustiawan Restu Fajar
Published: December 2023

Seiring dengan perkembangan teknologi dan informasi pada saat ini, Desa diharapkan dapat menerapkan aplikasi yang dapat membantu administrasi serta mempermudah komunikasi dengan masyarakat. Kawal Desa merupakan aplikasi atau platform yang dipergunakan untuk kebutuhan tata kelola desa maupun interaksi antara warga dan aparat. Berdasarkan permasalahan tersebut tujuan dari kegiatan Kuliah Kerja ini yaitu menerapkan aplikasi Kawal Desa untuk membantu aparat desa dan masyarakat dalam mengelola kegiatan kemasyarakatan menjadi lebih efektif dan efisien. Metode pendekatan yang dilakukan yaitu dengan pendampingan dan pelatihan kepada perangkat desa serta tokoh masyarakat. Hasil dari penerapan kawal desa ini administrasi desa dapat terorganisir dengan baik, serta mempermudah dalam monitoring kegiatan dan komunikasi masyarakat.