Material Production Research Articles

Optimization of Material Flow and Product Allocation in Inter-Unit Operations: A Case Study of a Refrigerator Manufacturing Facility

Background: Logistics operations are integral to manufacturing systems, particularly in the transportation processes that occur not only between facilities and stakeholders but also between warehouses and workstations within a facility. The design of functional areas and allocating goods to appropriate zones within the warehouse management system (WMS) are critical activities that substantially influence the efficiency of manufacturing logistics operations. Methods: This study develops a mixed-integer programming (MIP) model to optimize material flow and product routing in manufacturing. The model identifies efficient pathways, assigns products to routes, and determines the required material-handling equipment. It is implemented in Python (3.11.5) using the Pyomo (6.7.3) package and the CBC solver (2.10.11), with sensitivity analysis performed on constraints and decision variables to evaluate robustness. Results: The findings indicate that Material Flow 3 and Material-Handling Equipment 1 represent the optimal configurations for managing the majority of goods within the manufacturing system. Conclusions: The proposed mathematical model supports the decision-making process by enabling adjustments to the proportions of functional areas within the manufacturing logistics system, ensuring operational efficiency and flexibility in response to changing demands. Furthermore, the study offers managerial insights and suggests directions for future research.

Pengembangan Bahan Ajar Menulis Teks Eksplanasi Berbasis Kontekstual dengan Menggunakan Animasi

Writing skills are one of the most difficult skills to do. A change is needed to stimulate students to be interested in writing. Animation is expected to be a solution in making it easier for students to think.This study aims to 1) determine the needs of students for teaching material products to write contextual-based explanations using animation by utilizing web animaker 2) design teaching material models for writing contextual-based explanations using web animaker animations 3) implementing contextual-based explanatory writing teaching materials using web animaker animations 4) analyzing the results of expert validation and feasibility tests for teaching materials writing contextual-based explanations using web animaker animations. This method use R&D. This research and development refers to the ADDIE development model. The result can improved students. The feasibility test results of teaching materials received an average of 3.8 with a percentage of 95% in the “Very Decent” category and an average score from media experts of 3.75 or a percentage of 94% in the “Very Decent” category. The results of Indonesian teacher feedback at MA Annajah Petukangan South Jakarta obtained an average of 3.6 with a percentage of 90% thus it can be categorized as “Very Feasible”. Small-scale trial 38 students obtained an average of 3.89 and a percentage of 97.4%. Thus, based on a likert scale of 3.21 to 4, it can be categorized as “Very Decent”.

On-Demand Polymer Materials for Sustainability and Space

Production of polymer material goods on-demand is a recurring science fiction element, but advances in chemistry and engineering have pushed it closer to reality. Experienced at a hobby scale by 3D printing enthusiasts and at an industrial level through rapid prototyping and modular manufacturing, the approach is on its way to further flexibility and high-performance material production. We review the advances in on-demand materials design as well as manufacturing, using examples in space exploration and sustainability, because these are cases where the value proposition for rapid changes in materials is strong. Despite the promising technological base for on-demand production, challenges still exist for commercial viability. We thus also review business strategy and private and public policy considerations for transitioning polymer materials markets to on-demand production. Combined analysis of the chemistry, manufacturing, and business/policy advances provides a more comprehensive picture of the status and remaining challenges.

Reducing material use and their greenhouse gas emissions in Greater Oslo

AbstractResource efficiency strategies are key to reduce material use and help limit global warming to below 2°C in 2100. Understanding the role of such strategies at the municipal level requires a localized approach. Here we evaluate a ramp‐up of resource efficiency strategies and their associated effects on car use and climate benefits toward 2050 for 19 individual subregions within the Greater Oslo region in Norway. In our scenarios, material stocks increase from 356 megatonnes (Mt) in 2022 to 361–381 Mt in 2050 driven by population growth, with low‐end estimate relying on a sufficiency (SUF) scenario limiting floor area per capita and banning new single‐family houses. The SUF scenario reduces total material consumption until 2050 (50.5 Mt) with 28% relative to a business‐as‐usual (BAU) scenario (70.8 Mt) with continuation of ongoing trends, thereby reducing greenhouse gas (GHG) emissions from material production by 21% (BAU: 11.8 MtCO2‐eq, SUF: 9.4 MtCO2‐eq). If resource efficiency strategies are combined with material production decarbonization in‐line with a 2°C scenario, a 35% reduction in emissions is achievable (7.7 MtCO2‐eq). Car ownership rates and traveled distance per capita decrease in the SUF scenario compared to 2022 with 11%. Assuming the current relationship between settlement characteristics and transport demand, total driving distance fails to decline due to population growth. Limiting the floor‐area per capita in residential buildings significantly decreases material demand. Resource efficiency strategies including densification need to be complemented with a rapid decarbonization of material supply and stronger incentives to move away from car driving to maximize climate change mitigation. This article met the requirements for a gold‐gold JIE data openness badge described at http://jie.click/badges.

A sensitivity analysis of methodological variables associated with microbiome measurements.

The experimental methods employed during metagenomic sequencing analyses of microbiome samples significantly impact the resulting data and typically vary substantially between laboratories. In this study, a full factorial experimental design was used to compare the effects of a select set of methodological choices (sample, operator, lot, extraction kit, variable region, and reference database) on the analysis of biologically diverse stool samples. For each parameter investigated, a main effect was calculated that allowed direct comparison both between methodological choices (bias effects) and between samples (real biological differences). Overall, methodological bias was found to be similar in magnitude to real biological differences while also exhibiting significant variations between individual taxa, even between closely related genera. The quantified method biases were then used to computationally improve the comparability of data sets collected under substantially different protocols. This investigation demonstrates a framework for quantitatively assessing methodological choices that could be routinely performed by individual laboratories to better understand their metagenomic sequencing workflows and to improve the scope of the datasets they produce.IMPORTANCEMethod-specific bias is a well-recognized challenge in metagenomic sequencing characterization of microbiome samples, but rigorous bias quantification is challenging. This report details a full factorial exploration of 48 experimental protocols by systematically varying microbiome sample, iterations of material production, laboratory personnel, DNA extraction kit, marker gene selection, and reference databases. Quantification of the biases associated with each parameter revealed similar magnitudes of variation arising from real biological differences and from varied analysis procedures. Furthermore, these measurement biases varied substantially with taxa, even between closely related genera. However, computational correction of method bias using a reference material was demonstrated that significantly harmonized metagenomic sequencing results collected using different analysis protocols.

From Waste to Resource: Evaluation of the Technical and Environmental Performance of Concrete Blocks Made from Iron Ore Tailings

This study investigates the use of iron ore tailings (IOTs) as recycled aggregates in segmental blocks, focusing on technical performance, CO2 emissions, and embodied energy using the cradle-to-gate approach. IOTs replaced fine aggregates in concrete at 25%, 50%, and 75% by volume, achieving compressive strengths of 16.23 MPa, 10.02 MPa, and 3.93 MPa, respectively. Raw material production accounted for 98% of CO2 emissions and 86% of embodied energy. Producing blocks at mining sites offered limited environmental benefits due to longer transport distances. Despite this, the results showed a 6% reduction in CO2 emissions and a 35% improvement in mechanical–environmental performance (CO2 emissions weighted by compressive strength) compared to traditional concrete. These findings underscore the potential of IOT-based concrete for segmental block production.

Rapid electrothermal upcycling hexachlorobutadiene (HCBD) polluted distillation residue into turbostratic graphene for enhanced electromagnetic wave absorption.

The trichloroethylene production industry generates high-boiling-point solid residues during rectification, which contain high concentrations of chlorinated contaminants, particularly hexachlorobutadiene (HCBD). Traditionally, these distillation residues are managed through co-incineration or landfilling, leading to environmental and economic challenges. In this study, we present a rapid and environmentally friendly electrothermal approach for both detoxifying and upcycling distillation residue into graphene-based electromagnetic wave (EMW) absorbing materials. By employing a DC power pulse discharge with a 10 s duration, we achieved over 99 % HCBD degradation efficiency. Characterization results indicate that the thermal shock transforms the distillation residue into high-value turbostratic pulse graphene (tPG). This tPG, featuring a unique structure, demonstrates substantial potential as an EMW absorber, with an effective absorption bandwidth of 3.9 GHz and a reflection loss of -42.0 dB at a minimal matching thickness of 1.6 mm. The method offers a sustainable, cost-effective solution for hazardous waste management, combining rapid processing with high-value material production.

Pendampingan Pabrikasi Media Pembelajaran Komprehensif dalam Meningkatkan Kompetensi Pedagogik Guru SDN Tanjung Kabupaten Kediri

Fabrication of learning media is an effort in the process of designing and producing learning media comprehensively. The comprehensive level consists of the levels of important subjects taught in elementary schools which include Natural Sciences, Social Sciences, Mathematics, Civics, and Indonesian. The aim of this activity is to help teachers in assisting in creating media so that they are skilled in designing and using it. This activity was carried out at SDN Tanjung, Kediri Regency with the target objects being the teachers at the school consisting of 16 people. The stages of this activity consist of partner situation analysis, literature review and material preparation, socialization, design and production, and use of media by teachers in the classroom. The results of this activity are that teachers feel very helped and happy with the fabrication of learning media as a form of improving teacher pedagogy in teaching students at school.

Structural and Mechanical Performance Characteristics of Construction Plasters with Different Material Compositions and Advanced Geopolymerization

Thermal performance-enhancing and weather-protective plasters for building elements are highly favoured in the construction industry. However, whilst substantial research has focused on the thermal performance characterisation of plasters, their mechanical properties still need to be explored. This study addresses exactly this gap by preparing plasters by TS EN 998-1 standard, with varying water/cement ratios of 0.8, 0.9, and 1. The plasters are formulated utilizing severe materials, including sand, perlite, and fibres. In addition, some plaster mixes are produced through geopolymerization by combining fly ash and blast furnace slag with a sodium hydroxide solution. The prepared plaster mixes underwent several mechanical and physical tests to determine the optimal configuration. These tests include flexural and compressive strengths, capillary water absorption values, adhesion strength, spreading diameter, and material weight loss under freeze-thaw conditions. The results indicate that diminishing the water/cement ratio enhances the flexural and compressive strengths of the plasters. Conversely, increasing the water/cement ratio improves the adhesion strength. The inclusion of polypropylene fibres reduces the adhesion strength, while perlitecontaining plasters exhibit lower freeze-thaw losses compared to other mixes. These findings offer practical insights for improving plaster formulations, addressing realworld challenges, including material availability, cost-effectiveness, and production - 145 - Structural and Mechanical Performance Characteristics of … Meltem Kaptan et al. scalability. The study underscores the potential of geopolymerization to advance sustainable construction practices whilst identifying limitations in implementation for broader industry adoption. Keywords: Freeze-thaw,

Unveiling the amalgamation of growing substrates and cultivars for low-cost plantlet multiplication in banana

The cultivated bananas (Musa spp.) have a complex reproductive physiology which favours the vegetative methods of propagation, particularly sucker or tissue culture, as the commercial methods. Propagation of banana through macro-propagation technique can be employed to produce quality planting materials using less inputs. With this background, a scientifically designed investigation was carried out for optimizing composition of growing substrate for low-cost planting material production in banana. This study investigates the efficacy of macro-propagation techniques using different growing substrates and bio-fertilizers for two banana cultivars: ‘Grand Naine, AAA’ and ‘Alpan, AAB’. The experiment was laid out in complete randomized design (CRD) with eight different combinations of growing substrate with five replications. Results showed significant differences in the emergence of primary, secondary and tertiary buds, as well as root development. The treatment comprising sawdust (50 %) and banana fiber waste (50 %) with Trichoderma consistently outperformed others in terms of days taken primary (21.45), secondary (46.91) & tertiary bud emergence (58.99), and maximum number of primary (4.21), secondary (7.16) & tertiary shoots (19.91). Same growing media also recorded minimum days taken for root emergence (17.61 days), maximum number of roots per shoot (161.10), primary roots (24.89), secondary roots (46.32), tertiary roots (89.90) & highest root length (21.88 cm). The cultivar ‘Grand Naine, AAA’ exhibited superior performance across most parameters compared to ‘Alpan, AAB’. Overall, the treatment comprising sawdust (50 %) and banana fiber waste (50 %) with Trichoderma found to be a cost-effective and efficient method for producing high-quality banana planting materials, enhancing banana production and sustainability.

პირდაპირი ეთერები

The article deals with the direct conductors and direct perceptions of mass communication, the response of the message, and the decoder to improvisational information. As well emphasis is placed on presenting the pros and cons of direct signals. There are discussed the differences and effectiveness of the effects on public opinions, compared to pre-prepared audiovisual material and direct informativecognitive-entertaining media products in the study. Key Words: Direct perception, Information, Emergencies, Sports broadcasts, Jokes, Concerts, Improvisational Conductor.

Pengembangan LKPD Biologi Materi Keanekaragaman Hayati Terintegrasi Higher Order Thinking Skills

LKPD is a teaching material product that is often used by teachers. The development of LKPD that integrates HOTS questions is needed to increase students' motivation and science process activities. This study aims to determine the validity, and feasibility of using LKPDs integrated with HOTS in class X biodiversity biology material at Al-Hamzar High School. The research method with the type of research is the development of the 4D model (Defaine the definition stage of development needs, Designe the LKPD design stage, Develop the LKPD manufacturing stage with expert validation, and Disseminate the dissemination stage through limited trials). The research instrument used hots-based LKPD and expert validation sheets. The results of the research on the validation results of teaching materials with a score range of 159.99 <X with a very feasible category and on the material validation sheet are valid with several revisions by three expert validators, namely teaching material validators, material validators and language validators. HOTS LKPD is used in the learning process to determine the extent to which students understand the biodiversity of living things.

Scarcity Poetics: Christian Bök’s Eunoia and the Economics of Literary Value

Christian Bök’s Canadian bestseller Eunoia (2001) is an ideal study in how the romantic notion of literary value actually abides economic theories. Eunoia is a collection of five prose-poems each written using only one vowel grapheme (A, E, I, O, or U). These arbitrary material production constraints work just like economic sanctions, artificially inflating the scarcity—and hence value—of the text, both commercially and literarily. Discourse analysis of surrounding debates reveals that detractions and praises alike abide the same basic supply-and-demand logic: e.g., economic theories of (relative) marginal utility, as applied by Lee Erickson in The Economy of Literary Forms (1996). Building on Erickson’s thesis of how publication media costs shaped literary form and content, on Mary Poovey’s history of literary value’s origin in economic value, and on other efforts to combine literary study with economics, this essay applies economic theory to a rare opportunity to generalize the relation of literary material, form, and content. Conclusively, scarcity poetics/tactics are not just unique to Eunoia, but fundamental to all literary form. Eunoia’s extreme manipulation of linguistic materials isolates the general mechanism by which literary value is produced.

Development Of Android-Based Applications With An Inquiry Approach On Solubility Material And Solubility Products As A Source Of Independent Learning For High School Students

This study aims to develop an Android-based application that uses an inquiry approach on solubility material and solubility products, and assesses its feasibility as an alternative source of independent learning for high school students. The approach used is the development research method, by choosing a development design using the ADDIE model. The result of this study is in the form of an Android-based application. The evaluation of the results of this development is based on the assessment of validators who show very good categories, with ideality reaching 86% according to the assessment of media experts, and 84.75% according to the assessment of material experts. Student responses to Android-based applications with an inquiry approach to solubility material and solubility results obtained a percentage of 93.22%. Based on the expert assessment and student responses, it can be concluded that the Android-based application that has been developed is worthy of being used as an independent learning resource for high school students.

Advances in Metal Chalcogenides and Metal Oxides Supercapacitors: A Comprehensive Review of Fundamental Mechanisms and Recent Progress

The rising worldwide demand for energy storage devices has driven significant advancements in studies regarding supercapacitor (SC), particularly in the context of renewable green energy systems and electronics. SCs have come up as a critical technology, providing ultra-fast charging, long lifespan and high-power density when compared to conventional batteries. These attributes make SCs ideal for applications that needs surging energy delivery, such as electric vehicles and grid energy storage systems. Lately wide range of research has been focused on enhancing the energy density through the development of advanced evolved materials and device architectures. This review article discusses recent advancements in SC, particularly in electrode materials, such as transition metal oxides (e.g., RuO2, MnO2, V2O5) and metal chalcogenides (e.g., MoS2), which exhibit high surface area, great electrical conductivity, and mechanical stability. These materials, alongside carbon-based materials like graphene and conducting polymers, have demonstrated significant improvements in charge storage capacity and energy transfer efficiency. Hybrid materials containing metal oxides with carbon-based contents have shown great promise in enhancing both energy and power densities. The review also discusses recent trends in electrolytes, including ionic liquids, aqueous solutions, and solid-state electrolytes, which have played significant role in improving SC performance by widening the voltage window and enhancing stability. Despite these technological advancements, challenges such as cost-effective material production and scalability remain barriers to widespread commercialization. The customization of SCs into hybrid energy storage systems alongside batteries and fuel cells presents a promising avenue for future development. This review article pins down the importance of ongoing research to overcome these challenges while fully realizing the potential of SCs in the evolving energy landscape.

Application and Challenges of Six Sigma in SCM: A Case Study of Heilongjiang Z Company

This paper takes Heilongjiang Z Company as a case study to explore the application and challenges of the Six Sigma methodology in the supply chain quality management of the specialty wax industry. Initially, the paper analyzes the background and current situation of the specialty wax industry, highlighting challenges in supply chain management such as unstable raw material supply, low production efficiency, lax quality control, and slow market response. Subsequently, it outlines the Six Sigma methodology and provides a detailed account of how Heilongjiang Z Company has utilized Six Sigma to optimize raw material procurement, enhance product quality and production efficiency, and strengthen market adaptability. Through the Six Sigma implementation process comprising Define, Measure, Analyze, Improve, and Control phases, the paper demonstrates how Z Company has reduced delays in raw material supply and production downtime, thereby cutting costs, increasing customer satisfaction, and boosting market competitiveness. Ultimately, the paper concludes that the Six Sigma methodology can effectively improve the efficiency of supply chain management in the specialty wax industry and offers suggestions for improvement strategies for other companies within the sector.

МОДЕЛИРОВАНИЕ ЦИФРОВОЙ ПЛАТФОРМЫ ИННОВАЦИОННОЙ ПРОИЗВОДСТВЕННОЙ ЭКОСИСТЕМЫ РЕГИОНА

The innovation paradigm defines the ecosystem approach as one of the frontier directions in the theory and practice of the development of complex social and economic systems. A characteristic feature of the current stage is the leading role of the Russian financial sector in the creation of ecosystems. At the same time, in order to achieve technological sovereignty and increase competitive advantages, it is important to introduce an ecosystem approach in the real sector of the economy with the participation of actors belonging to sectors of material production industries (industry and agro-industrial complex). The importance of regional-level innovation ecosystems is increasing, because territories with significant scientific, technological, production, and intellectual potential are becoming the locomotives of current and future transformations. The regional innovative production ecosystem (IPER) is a modern format for interaction between actors that allows for the synergy of partnerships between the state, business, science and the real sector of the economy based on network interactions, which is especially important in the agenda of sustainable innovation-oriented growth. A feature of the IPER in the sphere of agricultural production (and the agro-industrial complex as a whole) is a higher level of systemic complexity, which is due to a significant range of factor influence, including not only complex resource provision, but also natural and climatic conditions. Digital transformation is defined as one of the key national development goals until 2030, the number of projects in this area has increased in Russia by 27% over the past five years, and growth potential remains. The level of achievement of digital maturity at the end of 2023 was 74.7% against the planned indicator of 64.2%. The presented algorithm for the digital transition of IPER involves a step-by-step strategizing of the process with the identification of targets, risk assessment and possible realistic scenarios. The interaction of actors based on the joint of resources, the coordination of interests within the framework of IPER with the prospect of platformization is aimed both at achieving their individual goals and at increasing the sustainability of the entire ecosystem, with a projection on regional development and strengthening positions at the national and international levels.

Assessment Of Risk Factors in The Production, Processing, Storage and Transportation of Pre-Prepared Meals

Microbial contamination and chemical contamination are the main factors that cause food safety and quality problems in pre-prepared meals. According to the order of raw material production, processing, storage and transportation in the pre-prepared meal supply chain, this article analyzes the potential microbial risk points from the perspective of contamination pathways, lists common food contamination microorganisms and their hazards, and divides common chemical contamination according to production links, aiming to warn the executors of the corresponding processes to prevent and control potential microbial contamination and chemical hazards, so as to control the food safety risks of the pre-prepared meal industry at a macro level. Through analysis, this article found that if these measures are effectively implemented, the food safety contamination of prepared vegetable products will be significantly reduced, and product quality and market competitiveness will also be improved. Future research can focus more on building a comprehensive food safety prevention and control system in the prepared food industry to achieve healthy and sustainable development.

Pengembangan Bahan Ajar Digital Pada Materi Panas Dan Perpindahannya Berbasis Kearifan Lokal Sumatera Selatan Kelas V SD

The development of digital teaching materials is currently very necessary in the world of education because elementary school students are surrounded by technology, even developing together with technology and local wisdom. Elementary school students who are in the concrete thinking range, in addition to requiring learning with concrete media, also need teaching materials to satisfy their curiosity and reduce boredom in learning. This study aims to produce a valid and practical digital teaching material product based on local wisdom on the material of heat and its transfer for class V of SD Negeri 04 Rantau Alai. This study uses the Research and Development research method using the ADDIE model (Analyze, Design, Development, Implementation and Evaluation). The results of this study obtained a score for an average media expert of 83% with the criteria "Very Valid", an average score for material experts of 88% with the criteria "Very Valid" Recapitulation of validation results of 85.5. Meanwhile, the results of the practicality of the product by 3 students and small groups obtained an average score of 86.55% with the criteria of "Very Practical" so that digital teaching materials based on the Material of Heat and Its Transfer Based on Local Wisdom are valid and practical for use in the learning process.

PRODUTOS DE TECNOLOGIA ASSISTIVA E ACESSIBILIDADE DE PESSOAS COM DEFICIÊNCIA EM PROGRAMAS DE ATIVIDADE FÍSICA ADAPTADA

Assistive Technology (AT) consists of a set of resources, products, and services that contribute to providing or enhancing the functional skills of people with disabilities (PWD). The use of AT in Adapted Physical Activity (APA) represents the democratization of access opportunities for PWD to diverse physical activities, sports (adapted or not), and leisure programs. This study aimed to identify, compile, and describe some material resources and products available to people with disabilities within the context of APA, through searches on electronic websites. From a qualitative perspective, an exploratory and descriptive study was conducted, characterized by a combination of bibliographic and documentary research. Electronic searches for material resources and AT products applied to APA were employed as data collection instruments. Document analysis was used to process the data and classify the products found. The results indicate that the products used in APA practice will depend on the functionality of each individual and their specific needs, and that access to APA projects and programs for PWD does not always rely on highly sophisticated technological resources that may be economically inaccessible. It is suggested that further studies be conducted with a focus on the use of AT to improve the quality of life related to physical activity opportunities in populations with disabilities. Received: 2024/10/18 Reformulated: 2024/12/19 Accepted: 2024/12/23