Статті в журналах: "Material Flow Analysi"

1

Simbolon, Ika Pratiwi, Imas Nurani Islami, and Vita Elisa Fitriana. "Pendalaman Materi: Laporan Keuangan sebagai Dasar Analisis Investasi Saham." ACADEMICS IN ACTION Journal of Community Empowerment 1, no. 2 (January 15, 2020): 109. http://dx.doi.org/10.33021/aia.v1i2.917.

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This community service activities aims to deepen public understanding in making financial records and reporting correctly and making the financial statements as a basis for investment analysi. The investment analysis method used is a discounted cash flow model to determine whether the investment is undervalued or overvalued. The community in this activity are students of SMK Bina Nasional Informatika, North Cikarang. The implementation phase of this activity includes a field survey, coordination with the school principal, the implementation of a financial report socialization program as a basis for stock investment analysis, and preparation of the report. The socialization activity went smoothly attended by 28 Accounting students in class XII. Socialization participants seemed enthusiastic about the material provided. This can be seen from the beginning to the end of the event, all participants followed well. Based on the results of interviews, questions and answers and direct observations, community service activities have increased the knowledge of students by as much as 80% about how to prepare good financial statements and conduct stock valuations using financial statements.

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Allen, Frederick W., Priscilla A. Halloran, Angela H. Leith, and M. Clare Lindsay. "Using Material Flow Analysis for Sustainable Materials Management." Journal of Industrial Ecology 13, no. 5 (October 2009): 662–65. http://dx.doi.org/10.1111/j.1530-9290.2009.00168.x.

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KMIECIK, Mariusz, and Aleksandra WIERZBICKA. "Analysis of material flow in a distribution network from the perspective of selected logistics operator." Scientific Papers of Silesian University of Technology. Organization and Management Series 2020, no. 146 (2020): 207–17. http://dx.doi.org/10.29119/1641-3466.2020.146.16.

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Purpose: The purpose of this paper is to analyze material flow from the perspective of a logistics operator operating in a distribution network at Material Decoupling Point (MDP). This analysis will focus on classifying the flowing products into the appropriate groups in terms of their sales characteristics, release volume and the value of the coefficient of variation. This analysis will also involve product classification in terms of forecast accuracy. Design/methodology/approach: Main method used for the research focuses on analyzing one of distribution network. Analyze considered examination of material flow and tests of forecast tool to improve operational issues. Findings: Logistics operator is able to forecasting demand of products in distribution network. It is interesting area of research developing in the future. Originality/value Forecasting is considered here as a kind of development perspective for the operator who currently does not make forecasts. Forecasting implementation could be in these case.

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4

Kang, Suk-Hoon, Jae-Hyung Cho, Chang-Gil Lee, Sung-Joon Kim, Kyu-Hwan Oh, and Heung-Nam Han. "Microtexture and Material Flow Analysis on Friction Stir Welded Materials." Journal of the Korean Welding and Joining Society 28, no. 5 (October 31, 2010): 20–27. http://dx.doi.org/10.5781/kwjs.2010.28.5.020.

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5

Božek, Pavol, and Peter Pokorný. "Analysis and Evaluation of Differences Dimensional Products of Production System." Applied Mechanics and Materials 611 (August 2014): 339–45. http://dx.doi.org/10.4028/www.scientific.net/amm.611.339.

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Logistics is primarily to address issues with whose functional, organizational, personnel and material means can be improved and optimize the entire course material flow businesses, which shall logistics integration business functions. Production logistics means a sum of logistical tasks and measures for preparation and execution of the production process. Includes all activities associated with material and information flows of raw materials, auxiliary and production materials from the warehouse to the production of raw materials and semi-finished goods from the warehouse and purchased parts through the various steps of the manufacturing process including all buffer stores, through the installation of the finished goods warehouse.

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6

Özdoğru, Ünsal, and Tayfur Altiok. "Continuous material flow systems: analysis of marine ports handling bulk materials." Annals of Operations Research 231, no. 1 (September 6, 2012): 79–104. http://dx.doi.org/10.1007/s10479-012-1201-7.

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7

dos Muchangos, Leticia Sarmento, Akihiro Tokai, and Atsuko Hanashima. "Data uncertainties in material flow analysis: Municipal solid waste management system in Maputo City, Mozambique." Waste Management & Research: The Journal for a Sustainable Circular Economy 35, no. 1 (November 11, 2016): 120–25. http://dx.doi.org/10.1177/0734242x16675685.

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Material flow analysis can effectively trace and quantify the flows and stocks of materials such as solid wastes in urban environments. However, the integrity of material flow analysis results is compromised by data uncertainties, an occurrence that is particularly acute in low-and-middle-income study contexts. This article investigates the uncertainties in the input data and their effects in a material flow analysis study of municipal solid waste management in Maputo City, the capital of Mozambique. The analysis is based on data collected in 2007 and 2014. Initially, the uncertainties and their ranges were identified by the data classification model of Hedbrant and Sörme, followed by the application of sensitivity analysis. The average lower and upper bounds were 29% and 71%, respectively, in 2007, increasing to 41% and 96%, respectively, in 2014. This indicates higher data quality in 2007 than in 2014. Results also show that not only data are partially missing from the established flows such as waste generation to final disposal, but also that they are limited and inconsistent in emerging flows and processes such as waste generation to material recovery (hence the wider variation in the 2014 parameters). The sensitivity analysis further clarified the most influencing parameter and the degree of influence of each parameter on the waste flows and the interrelations among the parameters. The findings highlight the need for an integrated municipal solid waste management approach to avoid transferring or worsening the negative impacts among the parameters and flows.

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Matasci, Cecilia, Marcel Gauch, and Heinz Boeni. "HOW TO INCREASE CIRCULARITY IN THE SWISS ECONOMY?" Detritus, no. 14 (February 26, 2021): 25–31. http://dx.doi.org/10.31025/2611-4135/2021.14057.

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Environmental threats are triggered by the overconsumption of raw materials. It is therefore necessary to move towards a society that both reduces extraction and keeps the majority of the extracted raw materials in the socio-economic system. Circular economy is a key strategy to reach these goals. To implement it effectively, it is necessary to understand and monitor material flows and to define hotspots, i.e. materials that need to be tackled with the highest priority. This paper is aimed at determining how to increase circularity in the Swiss economy by means of a Material Flow Analysis coupled with a simplified Life Cycle Assessment. After having characterized material flows, we analyzed two types of hotspots: i) Raw materials consumed and/or disposed at high level, and ii) Raw materials whose extraction and production generates high environmental impacts. The Material Flow Analysis shows that each year 119 Mt of raw materials enter the Swiss economy. Therefrom, 15 Mt are derived from recycled waste inside the country; 67 Mt leave the system yearly; 27 Mt towards disposal. Out of the disposed materials, 56% are recycled and re-enter the socio-economic system as secondary materials. Looking at hotspots; concrete, asphalt, gravel and sand are among materials that are consumed and disposed at high level. Yet, looking at greenhouse gas emissions generated during extraction and production, metals - including the ones in electrical and electronic equipment - as well as textiles are among the categories that carry the biggest burden on the environment per unit of material.

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9

Lee, l.-seuk. "Life Cycle Analysis of Material Flow and the Construction of National Integrated Resources Management System on Metal Resources." Journal of the Korean Society of Mineral and Energy Resources Engineers 49, no. 6 (2012): 865. http://dx.doi.org/10.12972/ksmer.2012.49.6.865.

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10

Kim, Man-Il, and Jae-Hwan Kwak. "Assessment of Building Vulnerability with Varying Distances from Outlet Considering Impact Force of Debris Flow and Building Resistance." Water 12, no. 7 (July 16, 2020): 2021. http://dx.doi.org/10.3390/w12072021.

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Studies have been conducted to understand the physical characteristics of debris flows and quantitatively assess the vulnerability of the buildings nearby to mitigate damage from debris flow disasters. However, there remains a paucity of research on vulnerability assessments that discuss the impact force of debris flow and building resistance within certain sections, where debris flows spread from an outlet. In this regard, the study assesses the vulnerability of buildings to debris flows while considering the distance from an outlet. For this purpose, it selects the two sites of Chuncheon-shi in Gangwon-do and Cheongju-shi in Chungcheongbuk-do in South Korea, which are widely known for having experienced debris flow damage in 2011 and 2017, respectively. For the sites, the study conducts an inverse analysis through debris flow simulation to understand the physical characteristics of debris flows, including flow depth, flow velocity, and impact force. Then, the study assesses vulnerability by estimating the resistance of the materials of the buildings placed in the range where debris flows spread, which allows the calculation of a vulnerability index that a building material may have and the estimation of a safety distance from the outlet for each material of the buildings in the study sites. The result shows that with an increasing distance from the outlet, the flow depth, velocity, and impact force, which represent debris flow properties, tend to decrease. This again results in vulnerability being gradually reduced. The study also suggests that buildings are exposed to the risk of debris flow disasters at a sections 40 to 60 m from an outlet for wood material construction, 70 to 110 m for brick-masonry material construction, and all sections from an outlet for prefabricated material construction. Based on this result, the vulnerability index is estimated for the wood material (0.85), brick-masonry material (0.58), and prefabricated material (0.003).

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11

Liu, Ri Mei, and Shu Yuan Yang. "Research on Application and Analysis of Manufacturing Material Flow." Key Engineering Materials 584 (September 2013): 256–60. http://dx.doi.org/10.4028/www.scientific.net/kem.584.256.

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Manufacture is the pillar industry of national economy, yet its efficiency of the utilization of raw materials and energy needs increasing, and the consumption of environment needs improving urgently. From the perspective of material flow management, we introduce the material flow cost accounting (MFCA) to manufacturing enterprises and check computations according to two dimensions: value flow and material flow during the productive process. It can help achieve the goals of cutting the materials costs, saving the resources consumption and lowering environmental impact, thus the manufacturing enterprises can strengthen their competitive power and realize their own development.

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12

Ji, Feng, Zili Dai, and Renjie Li. "A multivariate statistical method for susceptibility analysis of debris flow in southwestern China." Natural Hazards and Earth System Sciences 20, no. 5 (May 18, 2020): 1321–34. http://dx.doi.org/10.5194/nhess-20-1321-2020.

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Abstract. Southwestern China is characterized by many steep mountains and deep valleys due to the uplift activity of the Tibetan Plateau. The 2008 Wenchuan earthquake left large amounts of loose materials in this area, making it a severe disaster zone in terms of debris flow. Susceptibility is a significant factor of debris flows for evaluating their formation and impact. Therefore, there is an urgent need to analyze the susceptibility to debris flows of this area. To quantitatively predict the susceptibility of the area to debris flows, this study evaluates 70 typical debris flow gullies, which are distributed along the Brahmaputra River, Nujiang River, Yalong River, Dadu River, and Ming River, as statistical samples. Nine indexes are chosen to construct a factor index system and then to evaluate the susceptibility to debris flow. They are the catchment area, longitudinal gradient, average gradient of the slope on both sides of the gully, catchment morphology, valley orientation, loose material reserves, location of the main loose material, antecedent precipitation, and rainfall intensity. Following this, an empirical model based on the Type I quantification theory is established for susceptibility prediction for debris flows in southwestern China. Finally, 10 debris flow gullies upstream of the Dadu River are analyzed to verify the reliability of the proposed model. The results show that the accuracy of the statistical model is 90 %.

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13

Prislupčák, Marek, and Anton Panda. "Comparison and Analysis of the Flow Rate." Key Engineering Materials 669 (October 2015): 197–204. http://dx.doi.org/10.4028/www.scientific.net/kem.669.197.

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Separation of materials is a fundamental technology for the production of machine parts. Division is involved in the overall use of the material and also impact on the overall production time. With the development of new materials increasing requirements for the construction, design and durability. This makes the development of new materials with higher mechanical, physical and chemical properties. These materials are difficult to machine, and this gives rise to the development of non-conventional technologies, which include water jet technology.

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14

Guo, Dongming, and Lizhen Huang. "The State of the Art of Material Flow Analysis Research Based on Construction and Demolition Waste Recycling and Disposal." Buildings 9, no. 10 (September 21, 2019): 207. http://dx.doi.org/10.3390/buildings9100207.

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Construction and demolition waste (C&D waste) are widely recognized as the main form municipal solid waste, and its recycling and reuse are an important issue in sustainable city development. Material flow analysis (MFA) can quantify materials flows and stocks, and is a useful tool for the analysis of construction and demolition waste management. In recent years, material flow analysis has been continually researched in construction and demolition waste processing considering both single waste material and mixed wastes, and at regional, national, and global scales. Moreover, material flow analysis has had some new research extensions and new combined methods that provide dynamic, robust, and multifaceted assessments of construction and demolition waste. In this paper, we summarize and discuss the state of the art of material flow analysis research in the context of construction and demolition waste recycling and disposal. Furthermore, we also identify the current research gaps and future research directions that are expected to promote the development of MFA for construction and demolition waste processing in the field of sustainable city development.

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15

Melnykova, Nadiya, and Vitaliy Blagoy. "THEORETICAL BASIS OF LOGISTIC ADMINISTRATION BY DIRECT AND REVERSE MATERIAL FLOWS." Economic Analysis, no. 28(4) (2018): 206–11. http://dx.doi.org/10.35774/econa2018.04.206.

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Introduction. Nowadays, the reverse material flows are becoming increasingly relevant in connection with an increase in the volume of sales of goods, raw materials, industrial waste, defective products, increased consumer awareness and welfare of the population, the cruelty of safety and environmental requirements. There is no generally accepted approach to the classification of reverse material flows. The definitions of direct and reverse material flows are not properly studied in the works of domestic scientists. Purpose. The article aims to study the direct and reverse material flows and to improve the classifications of material flows and reverse material flows within the logistics system of the enterprise. Method (methodology). The theoretical principles of modern economic theory and economic analysis are used to describe the direct and reverse materials flows; tools of abstract and logical generalization are applied to improve classifications of material flows and reverse material flows. Results. The essence of direct and reverse material flows, which are becoming increasingly important, has been investigated. The classification of reverse material flows has been improved. It takes into account all types of data flows arising at various stages of the logistics system and beyond, as well as enhances the efficiency of flow control processes.

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Anugerah, Budi, and Andri Nasution. "Relayout dengan Menggunakan BLOCPLAN Tool Analysis." Jurnal Sistem Teknik Industri 22, no. 1 (January 30, 2020): 15–21. http://dx.doi.org/10.32734/jsti.v22i1.2885.

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PT. Industri Nabati Lestari or PT. INL is a subsidiary of PTPN 3 and PTPN 4 which is engaged in CPO processing. But from each production cycle, every raw material needed by PT. INL is not only supplied by PTPN itself, but many suppliers take part in the supply of raw materials. The problem faced by the company now is the inefficient flow of material in the current company layout from loading raw materials to the final product shipping process. Therefore the first thing is to observe the flow material problems, one of which is rearrangement or relayout using the ARC-BLOCPLAN method

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17

Rechberger, Helmut, Oliver Cencic, and Rudolf Frühwirth. "Uncertainty in Material Flow Analysis." Journal of Industrial Ecology 18, no. 2 (April 2014): 159–60. http://dx.doi.org/10.1111/jiec.12087.

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18

Schmidt, Mario. "Material and Energy Flow Analysis." Chemical Engineering & Technology 33, no. 4 (April 2010): 551. http://dx.doi.org/10.1002/ceat.201090015.

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Gavin, H. P., R. D. Hanson, and F. E. Filisko. "Electrorheological Dampers, Part I: Analysis and Design." Journal of Applied Mechanics 63, no. 3 (September 1, 1996): 669–75. http://dx.doi.org/10.1115/1.2823348.

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Electrorheological (ER) materials are suspensions of specialized, micron-sized particles in nonconducting oils. When electric fields are applied to ER materials, they exhibit dramatic changes (within milli-seconds) in material properties. Pre-yield, yielding, and post-yield mechanisms are all influenced by the electric field. Namely, an applied electric field dramatically increases the stiffness and energy dissipation properties of these materials. A previously known cubic equation which describes the flow of fluids with a yield stress through a rectangular duct can be applied to annular flow, provided that certain conditions on the material properties are satisfied. An analytic solution and a uniform approximation to the solution, for the rectangular duct Poiseuille flow case is presented. A numerical method is required to solve the flow in annular geometries. The approximation for rectangular ducts is extended to deal with the annular duct case.

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20

Vujic, Goran, Nebojsa Jovicic, Milun Babic, Nemanja Stanisavljevic, Bojan Batinic, and Aleksandar Pavlovic. "Assessment of plastic flows and stocks in Serbia using material flow analysis." Thermal Science 14, suppl. (2010): 89–95. http://dx.doi.org/10.2298/tsci100621031v.

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Material flow analysis (MFA) was used to assess the amounts of plastic materials flows and stocks that are annually produced, consumed, imported, exported, collected, recycled, and disposed in the landfills in Serbia. The analysis revealed that approximatelly 269,000 tons of plastic materials are directly disposed in uncontrolled landfills in Serbia without any preatretment, and that siginificant amounts of these materials have already accumulated in the landfills. The substantial amounts of landfilled plastics represent not only a loss of valuable recourses, but also pose a seriuos treath to the environment and human health, and if the trend of direct plastic landfilling is continued, Serbia will face with grave consecequnces.

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21

Brunner, Paul H. "Beyond Materials Flow Analysis." Journal of Industrial Ecology 6, no. 1 (December 2002): 8–10. http://dx.doi.org/10.1162/108819802320971597.

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22

Adam, Véronique, Qie Wu, and Bernd Nowack. "Integrated dynamic probabilistic material flow analysis of engineered materials in all European countries." NanoImpact 22 (April 2021): 100312. http://dx.doi.org/10.1016/j.impact.2021.100312.

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23

Westbroek, Coenraad D., Jennifer Bitting, Matteo Craglia, José M. C. Azevedo, and Jonathan M. Cullen. "Global material flow analysis of glass: From raw materials to end of life." Journal of Industrial Ecology 25, no. 2 (March 2, 2021): 333–43. http://dx.doi.org/10.1111/jiec.13112.

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Song, Jiali, Wenyi Yan, Hongbin Cao, Qingbin Song, He Ding, Zheng Lv, Yi Zhang, and Zhi Sun. "Material flow analysis on critical raw materials of lithium-ion batteries in China." Journal of Cleaner Production 215 (April 2019): 570–81. http://dx.doi.org/10.1016/j.jclepro.2019.01.081.

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Knoll, D., M. Prüglmeier, and G. Prof Reinhart. "Materialflussanalyse mit ERP-Transportaufträgen*/Material flow analysis using transport orders." wt Werkstattstechnik online 107, no. 03 (2017): 129–33. http://dx.doi.org/10.37544/1436-4980-2017-03-25.

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Die Materialflussanalyse ist eine Methode zur Identifikation von Schwachstellen im Materialfluss. Die Methode ist jedoch aufgrund hoher manueller Aufwände bei der Datenerfassung und -aufbereitung nur beschränkt in der hochvarianten Montage einsetzbar, welche aus einer Vielzahl an Bauteilen und Prozessen besteht. Die automatisierte Ableitung und Visualisierung von Materialflüssen aus ERP (Enterprise Resource Planning)-Transportaufträgen ermöglicht eine kontinuierliche Materialflussanalyse zur Verbesserung des Materialflusses.   Material flow analysis is a method for identifying weakpoints in the material flow. Due to the high number of components and processes in the high-mix model assembly line, the method is limited due the high effort in collecting and preparing data. An automated approach to derive and visualize material flows using transport orders enables a continuous material flow analysis to improve the material flow.

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Hemali, N. A., and A. A. P. De Alwis. "Application of Material Flow Analysis to Municipal Solid Waste in Urban Areas in Developing Countries and Possible Solutions Under Circular Economic Framework." Nature Environment and Pollution Technology 21, no. 3 (September 1, 2022): 1411–19. http://dx.doi.org/10.46488/nept.2022.v21i03.050.

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"The understanding waste flow of a country is important to identify the main problems associated with waste management and identify opportunities in material flow management. A tool such as material flow analysis (MFA) is a widely used method in waste management studies, to provide a comprehensive analysis of material movements, support for material characterization analysis to identify the severity of a problem, identify the real root cause, and propose suitable management methods. This paper presents an application of MFA for municipal solid waste (MSW) management in Western provinces in Sri Lanka. The outcome includes the identification, and quantification of the main input and output flows of the system in the present context, from waste generation, collection, unaccounted and unidentified flows, material recovery, and final disposal of MSW. Results are evaluated under treatment mechanisms of Recycling, Reusing, and repurposing the materials. Overall results show per capita per day of waste generation in Sri Lanka stood at 0.43 kg, whereas, the Western province represents that 0.56 kg due to the high population area with the highest rate of urbanization. However, the global average per capita per day of waste generation stood at 2.22 kg. The material and energy recovery represent 31% and 33% respectively in the study area from total collected waste. 36% of the material finally ended up in open dumpsites even after collection. Further research needs to be done on material and energy recovery potential identification in dumping waste, as this can convert to valuable results with proper management practices with available resources."

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PANIKAVEETIL, FUAAD, AHAMED KUTTY, RAJESH KOPPOLU, AGNE SWERIN, FREDRIK LUNDELL, and MARTTI TOIVAKKA. "Numerical analysis of slot die coating of nanocellulosic materials." November 2020 19, no. 11 (December 1, 2020): 575–82. http://dx.doi.org/10.32964/tj19.11.575.

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Nanocellulosic coatings as a food packaging material are of commercial interest due to their nontoxic nature, renewability, and excellent barrier properties. Complex shear-thinning rheology poses challenges in designing and sizing equipment to pump, mix, and process the suspension and actual coating process. This study aims to determine the effectiveness of computational fluid dynamics (CFD) in predicting nanocellulosic suspension flow in light of existing rheological data. We employ and compare three distinct rheological models to characterize the rheology and flow of nanocellulose suspensions through a slot die coater, where the model parameters are established from existing slot rheometry measurements. A volume-of-fluid (VoF) based finite volume method is employed to simulate the flow in a slot die operated in an unconventional metering mode. Results with the Casson model predict the presence of unyielded regions in the flow, which was not captured using the power law model. These stagnation regions will incur coatability issues stemming from flow intermittencies and lead to potential defects in the coating layer, including fracture. The results suggest that a rheological model that includes yield stress should be considered while modeling such flows. A need for better rheological data to model nanocellulosic flows, especially at high consistencies and shear rates, is also highlighted.

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Fang, Ming, Ming Li Cao, Yan Li, and Yong Li. "Material Flow Analysis on Cement Industry." Advanced Materials Research 512-515 (May 2012): 3042–46. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.3042.

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Since the relationship between supply and demand of natural resources is on edge in the long run, the traditional extensive growth mode of economic development needs changing. Cement is widely used in construction. Producing cement needs large amount of natural resources and releases high waste emissions. By using Material Flow Analysis, the inputs and outputs of each part of manufacturing are analyzed scientifically and the inputs, outputs and efficiency indicators are accounted. The main hidden flows come from energy consumption, and the main harmful waste is CO2which comes from fuel combustion and CaCO3decomposition. Improving resource consumption efficiency and reducing CO2emission are the key ways to alleviate pressures on the environment.

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Romanelli, Thiago Libório, and Marcos Milan. "Material flow determination through agricultural machinery management." Scientia Agricola 67, no. 4 (August 2010): 375–83. http://dx.doi.org/10.1590/s0103-90162010000400001.

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The approach of material embodiment in agricultural production systems is important because it determines the convergence of inputs (indirectly, the natural resources) to the field. Additionally, material flow is the basis for both environmental (energy analysis, emergy synthesis, life-cycle analysis and carbon inventories) and economical analyses. Since different materials cannot compose a single index, generally these flows are not shown, making comparisons among approaches difficult. Another aspect that makes comparisons difficult is the definition of the boundary of the studied system. If these boundaries differ, results will also be different, hiding actual distinctions among systems. The present study aims to suggest an arrangement of existing models to determine material flow in agricultural production systems. The following steps were considered: i) the adoption of a diagram language to represent the analyzed system; ii) determination of the material flow for directly applied inputs; iii) determination of the material flow for indirectly applied inputs, which included: determination of the effective field capacity; fuel consumption; machinery depreciation; and labor. Data on fuel consumption were compared with the models presented. The best model applied was a fixed parameter based on engine power (0.163 L kW-1 h-1). The determination of the material flow for maize silage production presented similar results as those obtained in regional databases.

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Saghir, M. Z., and M. M. Rahman. "Thermo-Hydraulic Performance of Mini Channels in the Presence of Nanoparticles Phase Change Material Slab." Journal of Nanofluids 12, no. 3 (April 1, 2023): 652–65. http://dx.doi.org/10.1166/jon.2023.1954.

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In this paper, we investigate the effectiveness of combining mini-channel configurations in the presence of phase change material slabs. Different phase change material slabs connected with four mini channels were studied numerically. The Navier-Stokes and energy equations for the flow together with the energy equation for the phase change material considering the two-phase system were solved numerically using the finite element technique. Amongst the parameters investigated in this analysis is the Reynolds number, or in other terms, the flow rate. It is found that heat extraction continues as the flow rate within the microchannel increases until the velocity and thermal boundary layers have fully developed. When these layers are fully grown, adding slabs of phase change materials to the system allows for even more heat extraction. Therefore, a combination of mini-channel and phase change material is the best solution for combined heat extraction from a hot surface. This is especially true for circulating flows near the creeping flow with a low Reynolds number.

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Elverhøi, A., D. Issler, F. V. De Blasio, T. Ilstad, C. B. Harbitz, and P. Gauer. "Emerging insights into the dynamics of submarine debris flows." Natural Hazards and Earth System Sciences 5, no. 5 (August 17, 2005): 633–48. http://dx.doi.org/10.5194/nhess-5-633-2005.

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Abstract. Recent experimental and theoretical work on the dynamics of submarine debris flows is summarized. Hydroplaning was first discovered in laboratory flows and later shown to likely occur in natural debris flows as well. It is a prime mechanism for explaining the extremely long runout distances observed in some natural debris flows even of over-consolidated clay materials. Moreover, the accelerations and high velocities reached by the flow head in a short time appear to fit well with the required initial conditions of observed tsunamis as obtained from back-calculations. Investigations of high-speed video recordings of laboratory debris flows were combined with measurements of total and pore pressure. The results are pointing towards yet another important role of ambient water: Water that intrudes from the water cushion underneath the hydroplaning head and through cracks in the upper surface of the debris flow may drastically soften initially stiff clayey material in the "neck" of the flow, where significant stretching occurs due to the reduced friction at the bottom of the hydroplaning head. This self-reinforcing process may lead to the head separating from the main body and becoming an "outrunner" block as clearly observed in several natural debris flows. Comparison of laboratory flows with different material composition indicates a gradual transition from hydroplaning plug flows of stiff clay-rich material, with a very low suspension rate, to the strongly agitated flow of sandy materials that develop a pronounced turbidity current. Statistical analysis of the great number of distinguishable lobes in the Storegga slide complex reveals power-law scaling behavior of the runout distance with the release mass over many orders of magnitude. Mathematical flow models based on viscoplastic material behavior (e.g. BING) successfully reproduce the observed scaling behavior only for relatively small clay-rich debris flows while granular (frictional) models fail at all scales. For very large release masses, hydroplaning or significant softening of the shear layer due to water incorporation must be invoked to recover the observed scaling behavior; a combination of both effects likely will give the most realistic description of the phenomenon. Detailed studies of the neck behavior and the compositional dependence of the material properties are needed to arrive at a quantitative model. Other related and important open questions concern the rheological model appropriate for sandy debris flows and the suspension rate from the dense body into the associated turbidity current.

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32

Wang, Yishin, and Hwong-wen Ma. "Analysis of uncertainty in material flow analysis." Journal of Cleaner Production 170 (January 2018): 1017–28. http://dx.doi.org/10.1016/j.jclepro.2017.09.202.

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33

Savchenko, Clara. "LOGISTICS CHAIN ANALYSIS BASED ON A BELIEF NETWORK." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 27, 1997): 72. http://dx.doi.org/10.17770/etr1997vol1.1862.

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In the present paper, the concept of logistics is used to construct a decision making system for choosing the best logistics chain. In principle, the logistic approach to the management of material flows differs from the conventional one in following: it integrates separate elements into the common system that is able to react adequately to the perturbation of the environment (Coyle, Bardi et al. 1992).Logistics operations on the way of material flow movement from the initial source of raw materials to the terminal consumer are mostly fulfilled by using various transport vehicles. Costs for performing these operations constitute 50% of the total amount of logistics costs.Logistics chain is a linearly ordered set of participants of the logistic process that implement logistics operations on transportation of the external material flow from one logistics system to another (see Figure. 1).The presence of an uncertain decision making situation, probabilistic data changing as the time changes, complex relationships among the variables and the subjectivity of task perception in the given problem make it necessary to use an influence diagram (Moravski 1989) as a model of decision making problem.

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34

Leitão, C., R. M. Leal, D. M. Rodrigues, P. Vilaça, and A. Loureiro. "Material flow in Friction Stir Welding." Microscopy and Microanalysis 14, S3 (September 2008): 87–90. http://dx.doi.org/10.1017/s1431927608089472.

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Friction stir welding (FSW) is a solid-state joining technique initially developed for aluminium alloys. The heat generated by a rotating tool softens the material in the vicinity of the tool. The material undergoes intense plastic deformation following quite complex paths around the tool, depending on the tool geometry, process parameters and material to be welded. The comprehension of the material flow is essential to prevent voids and other internal defects which may form during welding. Several techniques have been used for tracking material flow during FSW such as metallography, the use of a marker material as a tracer or the flow visualization by FSW of dissimilar materials or even the X-ray and computer tomography. Some of these techniques are useless in the analysis of welds in homogenous materials or welds between materials of the same group. The aim of this investigation is tracking the material flow in FSW between 1mm thick sheets in aluminium alloys AA 5182-H111 and AA 6016-T4, currently used in automotive industry.

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Rimantho, Dino, Nur Yulianti Hidayah, Agung Saputra, Averina Chandra, Ananda Nurul Rizkiya, Gina Nashifah, Pipit Fitriyani, and Devi Milenia Putri Wesha. "Material Flow Analysis for Assessing the Sustainability Solid Waste Management Strategy." International Journal of Sustainable Development and Planning 17, no. 7 (November 30, 2022): 2271–78. http://dx.doi.org/10.18280/ijsdp.170728.

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With increasing income levels and accelerating consumption, municipal solid waste management (MSW) has become important in developing countries. This study intends to use material flow analysis (MFA) to assess the waste management strategy in Bogor-Indonesia. Moreover, this study also determines the extent of the waste flow path and provides suggestions for improvement. Waste volume data is carried out directly for ten days, referring to Indonesian Standards (SNI 3242: 2008 and SNI 19-3964-1994) related to waste management in settlements in Indonesia. Furthermore, the waste generation data were analyzed by applying the MFA Method. Data processing using STAN (Substance Flow Analysis Version 3) software makes Material Flow Analysis (MFA) images. The data shows that the waste generated is 20 kg to 140 kg per day. The existing conditions indicate that the waste is burned or disposed of in municipal landfills. The proposed waste management strategy model reveals 30.66 tons/year of inorganic waste that can be recovered through recycling and about 20.13 tons/year. The strategy that can be done is to establish a waste bank that applies Maggot BSF cultivation to recycle the organic waste produced. Decision-makers need future studies of material flows to be able to plan for changes in waste flows.

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36

Ohno, Hajime, Yasuhiro Fukushima, Kazuyo Matsubae, Kenichi Nakajima, and Tetsuya Nagasaka. "Revealing Final Destination of Special Steel Materials with Input-Output-Based Material Flow Analysis." ISIJ International 57, no. 1 (2017): 193–99. http://dx.doi.org/10.2355/isijinternational.isijint-2016-470.

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37

АCHKASOVA, L. "MODEL OF MATERIAL FLOW MANAGEMENT IN LOGISTICS SYSTEMS." Economics of the transport complex, no. 37 (May 12, 2021): 36. http://dx.doi.org/10.30977/etk.2225-2304.2021.37.36.

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The expansion of relations between regions and states is the main reason for the complication and lengthening of material flow chains. The logistical approach to material flow management involves the need to integrate all the elements of the logistics process into a single system. The aim of the article is to form a model of material flow management taking into account the whole range of information flows that provide it. To form the above model, the following methods were used: analyzed and synthesized information on approaches to defining the concept of material flow in logistics systems. Using a logical approach, the components of the material flow are determoned, that allow to fully identify it. The study also widely used methods of comparative analysis, a graphical method to reflect the proposed model. The article further develops the model of material flow management, which, in contrast to the existing ones, takes into account the whole range of information flows that provide effective management of material flows in logistics systems. The received model enables the enterprises to reach the set purposes more systematically, to increase the speed of material streams movement, to provide their quality and efficiency. The obtained results, which include the development of a material flow management model in logistics systems, allow further research on the division of functions in the proposed model and the organization of the transition to effective material flow management.

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38

Hungr, Oldrich. "Simplified models of spreading flow of dry granular material." Canadian Geotechnical Journal 45, no. 8 (August 2008): 1156–68. http://dx.doi.org/10.1139/t08-059.

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Shallow-flow integrated numerical models of landslide and avalanche motion have recently experienced rapid development. An important aspect of model development is verification, to show that models are correct and reasonably robust in their application of basic physical principles. Most existing models have been verified against controlled laboratory experiments using dry granular material. In this article, it is shown that spreading flows such as the “dam-break” problem in frictional material pose problems for shallow-flow analysis. A series of dam-break laboratory experiments have been carried out with several different slope angles and bed materials. A model was then applied using four alternative assumptions regarding the distribution of earth pressure in the sliding mass. It was shown that assumptions commonly used in previous work produce very substantial errors (up to 200%) when applied to the prediction of dam-break runout in material with both internal and basal friction. A new model is proposed based on a simple modification of the well-known SH assumptions. This new model provides excellent agreement with experimental results, both for shallow avalanches and spreading flows. It represents a means to greatly expand the applicability of shallow-flow models to real landslide problems involving spreading flow, such as flow slides.

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39

Anderberg, Stefan. "Material flow Analysis and Sustainable Development." Journal of Social Sciences 1, no. 3 (July 1997): 187–200. http://dx.doi.org/10.1080/09718923.1997.11892175.

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40

Brunner, Paul H., and Helmut Rechberger. "Practical handbook of material flow analysis." International Journal of Life Cycle Assessment 9, no. 5 (September 2004): 337–38. http://dx.doi.org/10.1007/bf02979426.

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41

Hwan, Hong Myung, Kang Leeseung, Lee Chan Gi, and Kim Woo-Byoung. "Domestic Material Flow Analysis of Yttrium." Journal of Korean Powder Metallurgy Institute 22, no. 6 (December 30, 2015): 443–49. http://dx.doi.org/10.4150/kpmi.2015.22.6.443.

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42

Rosselot, Kirsten Sinclair. "Material flow analysis for pollution prevention." P2: Pollution Prevention Review 6, no. 4 (1996): 99–102. http://dx.doi.org/10.1002/(sici)1520-6815(199623)6:4<99::aid-ppr12>3.0.co;2-d.

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43

Binder, Claudia R. "From material flow analysis to material flow management Part II: the role of structural agent analysis." Journal of Cleaner Production 15, no. 17 (November 2007): 1605–17. http://dx.doi.org/10.1016/j.jclepro.2006.08.017.

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44

Sato, Fernando Enzo Kenta, and Toshihiko Nakata. "Energy Consumption Analysis for Vehicle Production through a Material Flow Approach." Energies 13, no. 9 (May 11, 2020): 2396. http://dx.doi.org/10.3390/en13092396.

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The aim of this study is to comprehensively evaluate the energy consumption in the automotive industry, clarifying the effect of its productive processes. For this propose, the material flow of the vehicles has been elaborated, from mining to vehicle assembly. Initially, processes where each type of material was used, and the relationship between them, were clarified. Subsequently, material flow was elaborated, while considering materials input in each process. Consequently, the consumption of energy resources (i.e., oil, natural gas, coal, and electricity) was calculated. Open data were utilized, and the effects on the Japanese vehicle market were analyzed as a case study. Our results indicate that the energy that is required for vehicle production is 41.8 MJ/kg per vehicle, where mining and material production processes represent 68% of the total consumption. Moreover, 5.23 kg of raw materials and energy resources are required to produce 1 kg of vehicle. Finally, this study proposed values of energy consumption per mass of part produced, which can be used to facilitate future material and energy analysis for the automotive industry. Those values can be adopted and modified as necessary, allowing for possible changes in future premises to be incorporated.

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45

Shafie, Farah Ayuni, Dasimah Omar, Subramaniam Karuppannan, and Nurhayati Shariffuddin. "Urban Material Flow Analysis: An approach for Greater Kuala Lumpur." Asian Journal of Quality of Life 3, no. 11 (May 21, 2018): 193. http://dx.doi.org/10.21834/ajqol.v3i11.135.

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The objective of the study was to estimate environmental impacts of the cities in Greater Kuala Lumpur, Malaysia: Kajang, Sepang, and Putrajaya by using material flow analysis. The study assessed prime material flows within three cities in Malaysia; electricity consumption, water usage, food consumption, carbon dioxide emission, wastewater production and solid waste. A functional unit of kg/cap/day was defined for all the material flows. Putrajaya was seen as the highest consumer of water, even with the lowest population. Kajang contributed the most of in terms of environmental impacts, followed by Sepang and Putrajaya.Keywords: material flow analysis, urban management, resource consumption eISSN 2398-4279 © 2018. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. https://doi.org/10.21834/ajqol.v3i11.135

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46

Schrefler, B. A. "Multiphase flow in deforming porous material." International Journal for Numerical Methods in Engineering 60, no. 1 (April 21, 2004): 27–50. http://dx.doi.org/10.1002/nme.953.

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47

Fang, N. "A New Quantitative Sensitivity Analysis of the Flow Stress of 18 Engineering Materials in Machining." Journal of Engineering Materials and Technology 127, no. 2 (April 1, 2005): 192–96. http://dx.doi.org/10.1115/1.1857935.

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It has long been argued about which effect, among the effects of strain hardening, strain-rate hardening, and temperature softening, is predominant in governing the material flow stress in machining. This paper presents a new quantitative sensitivity analysis of the flow stress of 18 engineering materials based on the well-known Johnson-Cook model. It is demonstrated that the first predominant factor governing the material flow stress is either strain hardening or thermal softening, depending on the specific material employed and the varying range of temperatures. Strain-rate hardening is the least important factor governing the material flow stress, especially when machining aluminum alloys.

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48

Hsiau, S. S., and M. L. Hunt. "Kinetic Theory Analysis of Flow-Induced Particle Diffusion and Thermal Conduction in Granular Material Flows." Journal of Heat Transfer 115, no. 3 (August 1, 1993): 541–48. http://dx.doi.org/10.1115/1.2910720.

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The present study on granular material flows develops analytical relations for the flow-induced particle diffusivity and thermal conductivity based on the kinetic theory of dense gases. The kinetic theory model assumes that the particles are smooth, identical, and nearly elastic spheres, and that the binary collisions between the particles are isotropically distributed throughout the flow. The particle diffusivity and effective thermal conductivity are found to increase with the square root of the granular temperature, a term that quantifies the kinetic energy of the flow. The theoretical particle diffusivity is used to predict diffusion in a granular-flow mixing layer, and to compare qualitatively with recent experimental measurements. The analytical expression for the effective thermal conductivity is used to define an apparent Prandtl number for a simple-shear flow; this result is also qualitatively compared with experimental measurements. The differences between the predictions and the measurements suggest limitations in applying kinetic theory concepts to actual granular material flows, and the need for more detailed experimental measurements.

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49

McDougall, Scott, and Oldrich Hungr. "A model for the analysis of rapid landslide motion across three-dimensional terrain." Canadian Geotechnical Journal 41, no. 6 (December 1, 2004): 1084–97. http://dx.doi.org/10.1139/t04-052.

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A new numerical model for the dynamic analysis of rapid flow slides, debris flows, and avalanches has been developed. The model is an extension of an earlier algorithm and is implemented using a numerical method adapted from smoothed particle hydrodynamics. Its features include (i) the ability to simulate flow across complex three-dimensional terrain; (ii) the ability to allow nonhydrostatic and anisotropic internal stress distributions, coupled with strain changes through frictional relationships; (iii) the ability to simulate material entrainment; (iv) a choice of different rheological kernels, including frictional, plastic, viscous, Bingham, and Voellmy; (v) a meshless solution, which eliminates problems with mesh distortion during long displacements; and (vi) highly efficient and simple operation. The model has been tested by analysing a series of laboratory flume experiments with granular materials, both on straight and curved paths. The model is capable of accurately predicting the margins of various curving flows using a single set of input parameters. A preliminary analysis of a real rock avalanche case history is also included.Key words: landslides, debris flows, rock avalanches, runout analysis, dynamic modelling, numerical methods.

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50

Batteh, J. J., M. M. Chen, and J. Mazumder. "A Stagnation Flow Analysis of the Heat Transfer and Fluid Flow Phenomena in Laser Drilling." Journal of Heat Transfer 122, no. 4 (June 9, 2000): 801–7. http://dx.doi.org/10.1115/1.1318209.

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This paper presents a quasi-steady stagnation flow analysis for the material removal processes in high-intensity laser materials processing, such as laser drilling. The governing stagnation flow equations for the heat transfer and fluid flow phenomena are derived for the region near the centerline of the laser beam. The analysis accounts for conduction in the solid, conduction, and convection in the melt layer, and the latent heats of melting and vaporization. The stagnation flow governing equations and boundary conditions are appropriately normalized and solved, and the important combinations of material properties and independent laser parameters are identified. This semiquantitative analysis yields quasi-steady estimates for the penetration velocity, the thickness of the melt layer, the velocity and temperature profiles in the melt layer, and the fraction of melt that is vaporized for varying absorbed laser power and beam radius. Inviscid results from the stagnation flow analysis are shown for five different materials: aluminum, copper, low carbon steel, stainless steel, and titanium. Relatively good agreement exists between the results from the analysis and experimental data from the literature. [S0022-1481(00)01804-1]

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