Готові списки джерел за темами / Material Flow Analysi

Добірка наукової літератури з теми "Material Flow Analysi"

Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "Material Flow Analysi"

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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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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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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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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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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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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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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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Дисертації з теми "Material Flow Analysi"

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Stridh, Madeleine. "Material flow : An analysis of a production area for improved material flow." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-80193.

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Focus in the world today is quality and customer orientation. An organization needs to understand the concept of value from the perspective of a customer in order to keep up with expectations on quality, and the turbulent and global environment of today characterized by rapidly changing conditions. This master thesis project was conducted at ABB in Sweden during spring 2020. It is essential for ABB to have an ongoing focus on improvement to maintain a successful organization and enable a competitive future of quality and innovation. The aim of this project was to identify ways to improve material flow and reduce the amount of non-value-added activities that exist in a particular assembly process today. The objective of the project was to conduct proposals on realistic actions for improvement for implementation. Initially in the project a current state was performed and compiled into a specification of requirements and visualized through overall mapping of the material and communication flow. Two of the requirements were reducing the total lead time and ensure the same, or improved, physical and psychosocial work environment. The result of the current state showed that material is not available when needed, material shelves are not structured, and material flow is not optimal. Analysis methods used for analyzing the current state were material flow charts, value stream mapping and spaghetti diagrams. The outcome of the performed analyzes were then used as the foundation for a compiled list of problem areas. All previous performed work was then summarized, discussed and developed into a list of actions for improvement. This phase was performed by initially generating a great amount of ideas, which were then reviewed and evaluated in consideration of the specification of requirements. In addition to the final list of actions, a mapping of the future state was conducted to support the actions and visualize what a future state could look like if the actions are implemented. Lastly, the final list of actions was complemented with another list – a living document of the actions. This document gives the opportunity on a regular basis to monitor progress and should be regularly reviewed and updated. To ensure a successful implementation of improvement work based on the conducted action list, it is recommended to define and clarify responsibility for each action as well as target date and end date. Furthermore, the list should be continuously modified to ensure implementation. It is as well recommended to acknowledge implemented improvements in parallel with performing actions to maintain motivation. Additionally, participation in implementation and promoting dialogue, transparency and respect are valuable factors reducing the negative effects of the implementation of improvement concepts and contributes to a sustainable development of the improvement work.
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Helber, Stefan. "Performance analysis of flow lines with non-linear flow of material /." Berlin : Springer, 1999. http://opac.nebis.ch/cgi-bin/showAbstract.pl?u20=3540659544.

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Kopec, Grant Michael. "Examining natural resource futures with material flow analysis." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709409.

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Amneklev, Jennie. "Diffuse emissions from goods - influences on some societal end products." Doctoral thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-46805.

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End products of society (e.g. sewage sludge and incineration ashes) can be used as indicators of the use of chemicals in consumer goods. Through upstream work the sources of substances released from goods may be identified before the emissions reach the end products. This thesis is a result of five studies, of which four were conducted using substance flow analyses (SFA) for silver (Ag), bismuth (Bi) and copper (Cu) reaching sewage sludge. The fifth is an SFA that explores the implications of the presence of As (from CCA-treated wood) in ashes. These studies helped fulfil the specific and overall aims of the thesis; to contribute to the general knowledge on diffuse emissions reflected in end products, by examining emissions of some heavy metals from various societal goods and the implications for end products, in this case sewage sludge and, to some extent, ashes. The results from the studies, of which four had Stockholm as a study object, show the urban flows and accumulated amounts (stocks) of the heavy metals. The largest sources of the metals Ag, Bi and Cu in sewage sludge were identified to be textiles (Ag), cosmetics (Bi) and brake linings (Cu). For As (in CCA-treated wood) and Cu updated SFAs were performed and compared with earlier studies in order to follow the development and changes in flows over time. The current use of the heavy metals studied can also be seen as a loss of resources, and as the metals should ideally be recovered as a part of a circular economy, urban and landfill mining as well as recycling are alternatives that need further exploring. The legislation of chemicals in consumer goods was identified as an important step in handling corresponding diffuse emissions.
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Low, Man-Shi. "Material flow analysis of concrete in the United States." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33030.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2005.
MIT Rotch Library copy is in leaves.
Also issued in leaves.
Includes bibliographical references (p. 155-164).
Concrete is the second most consumed material in the world after water. Due to the sheer mass of concrete consumed annually and its associated resource and environmental impacts, improving the materials management of concrete consumption is a critical problem in the United States. It is increasingly evident that the society lacks knowledge of the collective material composition of the urban environment-of how we produce, consume and dispose of concrete. This thesis argues that the lack of informational linkages is driving the individual approaches of the construction industry, policy makers, environmental agencies and waste management industry, which results in the current segregated and government-subsidized material management. In order to identify opportunities for more effective materials management, this thesis performs the first comprehensive Material Flow Analysis for concrete in the United States for the year of 1996 to identify opportunities for more effective materials management. The dominant concrete products and the end-use categories in the United States are identified. The associated water, energy and fuel consumption and emissions produced are also incorporated. Five lifecycle stages are covered: (i) extraction of raw materials, (ii) cement manufacturing, (iii) production, (iv) use and (v) waste management of concrete. Two untapped material management opportunities are identified: minimizing water consumption during the extraction stage and the off-site production stage.
(cont.) In addition, three key observations are made: (i) the energy efficiency of the cement industry in the United States is close to saturation, (ii) product choice and concrete design are dominant factors for a more responsible materials consumption approach, and (iii) demand-side management is recommended as a more optimal approach than recycling in dealing with the current construction trends in the United States.
by Man-Shi Low.
S.M.
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Danius, Lena. "Data uncertinties in material flow analysis.Local case study and literature survey." Licentiate thesis, KTH, Chemical Engineering and Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1502.

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The aim of this thesis is to discuss and analyse the influenceof data uncertainties with regard to the reliability of materialflow analysis (MFA) studies. MFA, as a part of environmentalsystems analysis, is a method belonging to the research field ofindustrial ecology and more specifically industrial metabolism.As such, the method strives at giving a holistic view of thecomplex world we live in, in order to reduce negativeenvironmental impact. Among other things, MFA studies have beenproposed to be useful for priority setting and following up inmunicipalities.

Serving as a starting point is a local case study of flows ofnitrogen in a Swedish municipality, Västerås. The casestudy has been performed using the ComBoxmodel. The years studiedare 1995 and 1998. The main sectors in society emitting nitrogento water were identified as the agricultural and householdsectors. The dominating sectors emitting nitrogen to air wereidentified as the agricultural, transport and infrastructuresectors.

As a basis for discussing data uncertainties qualitatively andquantitatively a literature survey was performed. 50 articles andbooks were identified as in some way or another dealing with datauncertainties in MFA. The literature survey showed that theuncertainties for results from a MFA study might vary between±30 % and a factor 10 depending on what kind of parameter isinvestigated. Only one method was found that dealt with datauncertainties in MFA in a complete way; a model developed byHedbrant and Sörme (HS model).

When applying the HS model to the case study of nitrogen flowsin Västerås, it was found that when uncertaintyintervals were calculated the possible conclusions changed. Ofthe two pair of flows compared in relation to priority setting,none of the earlier conclusions remained. Of the three flowsanalysed in relation to following up, only the flow from onepoint source supported the same conclusion when uncertainty wasconsidered.

In all, it is concluded that data uncertainties in MFAanalysis are an important aspect and that further research isneeded in order to improve input data quality estimations andframeworks for determining, calculating and presenting data, datauncertainties and results from MFA studies. However, theunderlying reality remains, e.g. that management of materialflows are important for understanding and reducing the negativeenvironmental impact. Thus, MFA is one useful tool in thiswork.

Keywords:data uncertainties, sensitivity analysis,Material flow analysis, MFA, method to determine datauncertainties, case study, ComBox model, nitrogenflows.

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Schleyer, Marc. "Discrete time analysis of batch processes in material flow systems." Karlsruhe : Univ.-Verl. Karlsruhe, 2007. http://www.uvka.de/univerlag/volltexte/2007/243/.

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Yaramadi, Dehnavi Pouya. "Global cycle of gallium production, use and potential recycling." Thesis, KTH, Mark- och vattenteknik (flyttat 20130630), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171838.

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Life cycle analysis is an appropriate way to clear obscure facts about an element. Gallium is a critical element which is used in many technologies these days and therefore quantification of main global cycles of gallium, production, consumption and end of life products, also investigation about recycled gallium content and potential recycling possibilities are investigated in this paper. First a qualitative substance flow for gallium is designed similar to other metal cycles with regards to exclusive characteristics of gallium flows itself. USGS and World Mining Data are mainly used to get information about gallium production, main gallium consumptions and end of life products. Subsequently a quantitative model in STAN should unlock many uncertainties. Substance flow analysis and material flow analysis give a better understanding of unknown gallium flows with their uncertainties and meanwhile major applications, concentration of gallium in different products, waste flows, landfills and present recycling technologies are detailed. Consequently STAN model asserts that main gallium flows are primary gallium production and refined gallium production in production process, Integrated Circuit board fabrication, Light Emitting Diodes, Photovoltaic and recycled new scrap flow in manufacturing process. A significant amount of gallium is collected as stock in consumption process. Also current gallium recycling facilities are limited as recycling is not economically justified. Moreover main part of recycled gallium content is collected from new scrap which is formed through manufacturing process. Finally gallium consumption in Photovoltaic and Light Emitting Diodes industry increases rapidly and sustainability demand cost efficient methods for gallium recycling from solar cells, diodes and other end of life products.
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Abou-Zeida, Essam Mahrous. "Flow Characteristics and Stress Analysis of Bulk Materials in Silos /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487931993466818.

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Maruchi, Andréa Keller. "Fracionamento de fósforo em plantas empregando diferentes procedimentos de preparo de amostras e sistemas de análise em fluxo monossegmentado." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-16112006-110659/.

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Neste trabalho, foram avaliados diferentes procedimentos para tratamento de amostra de material vegetal, visando o fracionamento de fósforo (determinação das frações orgânica e inorgânica, solúvel e insolúvel). Os procedimentos avaliados visavam a conversão das diferentes frações em ortofosfato, minimizando tempo, consumo de reagentes e geração de resíduos. Foi desenvolvido um sistema de análises em fluxo monossegmentado empregando comutadores discretos (válvulas solenóides) para controlar a inserção das bolhas de ar e das alíquotas de amostras e reagentes. Para a determinação de fosfato, foi empregada a reação de formação do azul de molibdênio, empregando molibdato de amônio e ácido ascórbico como reagentes. Resposta linear foi obtida entre 0,50 e 25,0 mg L-1 P, descrita pela equação A = 0,0402 + 0,0377C (mg L-1 P), r = 0,999 para soluções preparadas em água. A sensibilidade diminuiu 8 % e 22 % quando se trabalhou com solução de referência em 0,35 mol L-1 e 0,70 mol L-1 HNO3, respectivamente. Limite de detecção de 0,024 mg L-1 P (99,7% de confiança), coeficiente de variação de 3,5% (n = 10) e freqüência de amostragem de 38 medidas/hora foram estimados. O consumo de reagentes foi de 5,0 mg de ácido ascórbico e 0,60 mg de molibdato de amônio por determinação. O sistema de análises em fluxo monossegmentado mostrou-se pouco susceptível a efeitos de matriz e perturbações por efeito Schlieren causadas por variações de acidez das amostras de planta. O sistema foi aplicado ao fracionamento de fósforo em uma planta que é utilizada como adubo verde (Crotalaria Juncea). Foram avaliados procedimentos para extração de fósforo, como o emprego de agitação mecânica empregando água ou ácido nítrico diluído como extrator (extração de fósforo solúvel), fotodegradação do fósforo orgânico solúvel em meio ácido com persulfato de amônio e digestão ácida assistida por microondas (determinação de fósforo total e de fósforo orgânico solúvel). Para determinação de fósforo total, foram avaliados procedimentos empregando diferentes massas de material vegetal, diferentes concentrações de HNO3 e adição de H2O2 como oxidante auxiliar. Bons resultados foram obtidos empregando 100 mg de material vegetal e 500 µL HNO3 concentrado, sendo desnecessária a adição de H2O2. O programa de aquecimento, com duração total de 29 min foi constituído pelas seguintes etapas: 1-rampa (5 min)/patamar (1 min): 140 ºC; 2-rampa (4 min)/patamar (5 min): 180 ºC; 3-rampa (4 min)/patamar (10 min): 220 ºC. Na determinação de fósforo inorgânico solúvel, a mesma eficiência de extração foi obtida empregando 0,20 mol L-1 HClO4, 0,05 mol L-1 HNO3 ou água como extrator em 10 minutos de agitação. Para a determinação do fósforo orgânico solúvel, foram avaliados diferentes massas de persulfato de amônio e diferentes tempos de irradiação. Obteve-se boa eficiência empregando 0,1 g de persulfato de amônio, em meio ácido com um tempo de irradiação de 30 min. Digestão ácida assistida por microondas também foi empregada para a determinação de fósforo orgânico solúvel; o programa de aquecimento empregado foi o mesmo para a determinação de fósforo total. Bons resultados foram obtidos empregando 5,5 mL do extrato solúvel e 500 µL HNO3 concentrado. Os resultados para as diferentes frações foram concordantes com os obtidos por ICP-OES a nível de confiança de 95%.
In this work, different sample treatment procedures were evaluated for fractionation of phosphorous in plant material (determination of organic and inorganic, soluble and insoluble fractions). The evaluated procedures aimed the conversion of different fractions in ortophosphate, minimizing time, reagent amounts and waste generation. It was developed a monosegmented flow system using discrete commutators (solenoid valves) to control the insertion of air bubbles, samples and reagents. For the determination of phosphate, it was used the reaction of molibdenium blue formation, using ammonium molibdate and ascorbic acid as reagents. Linear response was observed within 0.50 and 25.0 mg L-1 P, described by the equation A = 0.0402 + 0.0377C (mg L-1 P), r = 0.999 for solutions prepared in water. The sensitivity decreased about 8 and 22 % for reference solutions in 0.35 mol L-1 and 0.70 mol L-1 HNO3, respectively. Detection limit of 0.024 mg L-1 P (99.7% confidence level), coefficient of variation of 3.5% (n = 10) and sampling rate of 38 measurements per hour were estimated. The reagent consumption was 5.0 mg ascorbic acid and 0.60 mg ammonium molibdate per determination. The flow system was less prone to matrix effects and perturbations by Schlieren effect, both caused by variations of acidity in the samples. The system was applied to fractionation of phosphorous in a plant used as green manure (Crotalaria juncea). Several procedures for phosphorous extraction were evaluated, such as mechanic agitation using water or diluted nitric acid as extractor (extraction of soluble phosphorous), photodegradation of organic soluble phosphorous in acid medium and acid digestion assisted by microwaves (determination of total phosphorous and organic phosphorous). For determination of total phosphorous, procedures using different mass of plant material, different concentrations of HNO3 concentrated and addiction of H2O2 as auxiliary oxidant were evaluated. Good results were obtained using 100 mg of plant material and 500 µL HNO3, not being necessary the addiction of H
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Книги з теми "Material Flow Analysi"

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National Research Council (U.S.). Committee on Material Flows Accounting of Natural Resources, Products, and Residuals. and National Academy of Sciences (U.S.), eds. Materials count: The case for material flows analysis. Washington, D.C: National Academies Press, 2004.

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Brunner, Paul H., and Helmut Rechberger. Handbook of Material Flow Analysis. Boca Raton : Taylor & Francis, CRC Press, 2017. | Revised: CRC Press, 2016. http://dx.doi.org/10.1201/9781315313450.

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Helmut, Rechberger, ed. Practical handbook of material flow analysis. Boca Raton, Fla: Lewis, 2004.

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4

Helber, Stefan. Performance Analysis of Flow Lines with Non-Linear Flow of Material. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-95863-2.

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5

Bordbar, Mohammad Hadi. Theoretical analysis and simulations of vertically vibrated granular materials. Lappeenranta: Lappeenranta University of Technology, 2005.

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6

Environmental Systems Analysis and Management: Material Flow Analysis and Integration of Watersheds and Drainage Systems. Saarbrücken: VDM Verlag Dr. Müller, 2010.

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7

Jasch, Christine. Environmental and material flow cost accounting: Principles and procedures / Christine Jasch. [New York]: Springer, 2009.

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8

Thiros, Susan A. Chemical composition of ground water, hydrologic properties of basin-fill material, and ground-water movement in Salt Lake Valley, Utah. Salt Lake City, Utah: Utah, Dept. of Natural Resources, Division of Water Rights, 1995.

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9

Ramirez, Sotero Manuel. Flow cytometric analysis of material induced platelet derived microparticles, activated platelets, and platelet leukocyte associations. Ottawa: National Library of Canada, 1993.

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10

Rapera, Corazon Lira. Economic and sustainability indications from trends in material flows in the Philippines, 1981-2002. Chiba-shi, Chiba, Japan]: Institute of Developing Economies, Japan External Trade Organization, 2006.

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Більше джерел

Частини книг з теми "Material Flow Analysi"

1

Nylund, Hasse, and Minna Lanz. "Material Flow Analysis." In Encyclopedia of the UN Sustainable Development Goals, 1–15. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-71062-4_8-1.

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Nylund, Hasse, and Minna Lanz. "Material Flow Analysis." In Encyclopedia of the UN Sustainable Development Goals, 462–75. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-95726-5_8.

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Laner, David, and Helmut Rechberger. "Material Flow Analysis." In LCA Compendium – The Complete World of Life Cycle Assessment, 293–332. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7610-3_7.

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Kennedy, Peter, and Rong Zheng. "Material Properties of Polymers." In Flow Analysis of Injection Molds, 19–33. München: Carl Hanser Verlag GmbH & Co. KG, 2013. http://dx.doi.org/10.3139/9781569905227.003.

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Kennedy, Peter, and Rong Zheng. "Long Fiber-Filled Materials." In Flow Analysis of Injection Molds, 131–40. München: Carl Hanser Verlag GmbH & Co. KG, 2013. http://dx.doi.org/10.3139/9781569905227.009.

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Naohiro, Goto, Nova Ulhasanah, Hirotsugu Kamahara, Udin Hasanudin, Ryuichi Tachibana, and Koichi Fujie. "Material and Energy Flow Analysis." In Sustainability Assessment of Renewables-Based Products, 125–40. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118933916.ch9.

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Boelens, Jos, and Xander Olsthoorn. "Software for material flow analysis." In Managing a Material World, 111–26. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5125-2_8.

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Heragu, Sunderesh S. "Process and Material Flow Analysis." In Facilities Design, 163–202. 5th ed. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003285090-7.

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Pérez-Rincón, Mario Alejandro. "Materials Flow Analysis in Latin America." In Studies in Ecological Economics, 123–35. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-22566-6_11.

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AbstractBased on a systematic and organized literature review, the academic production for Latin America and the Caribbean (LAC) on Material Flow Analysis (MFA) was evaluated. This allowed us to know the research developments and to identify the influence of the “Barcelona School” (EB) and Professor Joan Martínez-Alier in this field of work in the region. The general balance of the literature reviewed (47 texts), shows the important influence of the EB for LAC: more than half of the publications have its origin, more than a third correspond to doctoral theses linked to the ICTA-UAB and 30% are published in journals originating in the ICTA-UAB. Thematically, the articles evaluated incorporate the main topics promoted by the EB. They are oriented towards studying the relationships between the metabolic dynamics of economies, environmental pressures and liabilities, and ecological distributive conflicts. These orientations correspond precisely to Professor Martínez-Alier’s central field of work: the link between ecological economics and political ecology. Methodologically, the potential and weaknesses of MFA were identified. Long-term material flow series have the potential to study large material-economic transitions, but little depth. Short and more detailed series, combining MFA with other methodologies, allow to better delve into the black box of energy-material flows and the environmental impacts of economic dynamics.
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Moriguchi, Yuichi, and Seiji Hashimoto. "Material Flow Analysis and Waste Management." In Taking Stock of Industrial Ecology, 247–62. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-20571-7_12.

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Тези доповідей конференцій з теми "Material Flow Analysi"

1

Bao, Zhimi, Shushen Zhang, Yu Chen, Suling Liu, Yun Zhang, and Huanlei Wang. "A Review of Material Flow Analysis." In 2010 International Conference on Management and Service Science (MASS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icmss.2010.5577113.

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2

Hara, Minako, Masayuki Tsuda, Kazue Ichino Takahashi, Yasue Nemoto, Jiro Nakamura, and Shiro Nishi. "Material Flow Analysis of ICT Business." In 2007 IEEE International Symposium on Electronics and the Environment. IEEE, 2007. http://dx.doi.org/10.1109/isee.2007.369093.

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3

Ciocci, Richard C. "Characterizing Naphthalene via Material Flow Analysis." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82808.

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An Environmental Protection Agency-funded project centers on the material flow analysis of naphthalene-containing products in an effort to eliminate, reduce, or replace the sources of naphthalene. The analysis commences with manufacturers who use naphthalene-containing products in their processes. Also, the analysis works in reverse by starting with the naphthalene user, as the material will be traced to the source in an effort to identify elimination/reduction opportunities throughout the material’s life cycle. A particular focus is the potential for removal of naphthalene from the primary processor’s raw material. A completed material flow accounting of naphthalene in the United States is the product of this work. The paper highlights the preliminary part of the study. It identifies the basic characteristics of naphthalene as one of the largest polynuclear aromatic hydrocarbons that is released to the environment. Included are likely sources of naphthalene emissions and releases as they are identified for further investigation.
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4

Hunt, Dexter, Joanne Leach, Susan Lee, Chris Bouch, Peter Braithwaite, and Chris Rogers. "Material Flow Analysis (MFA) for Liveable Cities." In The 4th World Sustainability Forum. Basel, Switzerland: MDPI, 2014. http://dx.doi.org/10.3390/wsf-4-f010.

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Slatter, Paul. "Analysis and flow behaviour prediction of paste material in sheet flow." In 16th International Seminar on Paste and Thickened Tailings. Australian Centre for Geomechanics, Perth, 2013. http://dx.doi.org/10.36487/acg_rep/1363_36_slatter.

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Tarasyev, Alexander. "APPLICATION OF MATERIAL FLOW ANALYSIS IN THE INDUSTRY." In 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2015. http://dx.doi.org/10.5593/sgem2015/b53/s21.009.

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Vaicis, Ivo, Kristaps Spade, Alexander Janushevskis, and Alexander Boiko. "Experimental analysis of bulk material flow through hopper." In 19th International Scientific Conference Engineering for Rural Development. Latvia University of Life Sciences and Technologies, Faculty of Engineering, 2020. http://dx.doi.org/10.22616/erdev.2020.19.tf429.

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Fang, Ning. "Sensitivity Analysis of the Material Flow Stress in Machining." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41655.

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Among the effects of strain hardening, strain-rate hardening, and temperature softening, it has long been argued about which effect is predominant in governing the material flow stress in machining. This paper compares four material constitutive models commonly employed, including Johnson-Cook’s model, Oxley’s model, Zerilli-Armstrong’s model, and Maekawa et al.’s model. A new quantitative sensitivity analysis of the material flow stress is performed based on Johnson-Cook’s model covering a wide range of engineering materials, including plain carbon steels with different carbon contents, alloyed steels, aluminum alloys with different chemical compositions and heat treatment conditions, copper and copper alloys, iron, nickel, tungsten alloys, etc. It is demonstrated that the first predominant factor governing the material flow stress is either strain hardening or thermal softening, depending on the specific work 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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9

Soleymani, Azita, Piroz Zamankhan, Hassan Yousefi, William Polashenski, and Vesa Tanskanen. "Flow Dynamics of Vibrated Dense Granular Materials in the Presence of Ambient Gas." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58445.

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Results are presented from a numerical study examining the flow dynamics of condensed granular materials in the presence of an interstitial gas in a narrow gap between two concentric cylindrical buckets subjected to sinusoidal oscillation in the vertical direction of the form z = Asin(ωt), where the parameter Γ = Aω2/g exceeds a critical value, Γc, above which the system becomes fluidized. Using a recently developed expression for the stress tensor of particle phase, a set of conservation equations were derived for the particle and fluid phases interacting via an interfacial drag force. Numerical integration of the continuum equations for the granular material in buckets revealed that above Γc, granular materials may exhibit liquid-like behavior and convection can occur creating a heap similar to that previously observed experimentally.
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Dubois, Didier, Helene Fargier, and Dominique Guyonnet. "Data Reconciliation under Fuzzy Constraints in Material Flow Analysis." In The 8th conference of the European Society for Fuzzy Logic and Technology. Paris, France: Atlantis Press, 2013. http://dx.doi.org/10.2991/eusflat.2013.4.

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Звіти організацій з теми "Material Flow Analysi"

1

Wu, Qihua, Kathryn Kremer, Stephen Gibbons, and Alan Kennedy. Determination of nanomaterial viscosity and rheology properties using a rotational rheometer. Engineer Research and Development Center (U.S.), April 2022. http://dx.doi.org/10.21079/11681/43964.

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Rheology studies the flow of matter and is one of the most important methods for materials characterization because flow behavior is responsive to properties such as molecular weight and molecular weight distribution. Rheological properties help practitioners understand fluid flow and how to improve manufacturing processes. Rheometers have been extensively used to determine the viscosity and rheological properties of different materials because the measurements are quick, accurate, and reliable. In this standard operating procedure, a general protocol using a rotational rheometer is developed for characterizing rheological properties of nanomaterials. Procedures and recommendations for sample preparation, instrument preparation, sample measurements, and results analysis are included. The procedure was tested on a variety of carbon-based nanomaterials.
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Patel, Reena. Complex network analysis for early detection of failure mechanisms in resilient bio-structures. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/41042.

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Bio-structures owe their remarkable mechanical properties to their hierarchical geometrical arrangement as well as heterogeneous material properties. This dissertation presents an integrated, interdisciplinary approach that employs computational mechanics combined with flow network analysis to gain fundamental insights into the failure mechanisms of high performance, light-weight, structured composites by examining the stress flow patterns formed in the nascent stages of loading for the rostrum of the paddlefish. The data required for the flow network analysis was generated from the finite element analysis of the rostrum. The flow network was weighted based on the parameter of interest, which is stress in the current study. The changing kinematics of the structural system was provided as input to the algorithm that computes the minimum-cut of the flow network. The proposed approach was verified using two classical problems three- and four-point bending of a simply-supported concrete beam. The current study also addresses the methodology used to prepare data in an appropriate format for a seamless transition from finite element binary database files to the abstract mathematical domain needed for the network flow analysis. A robust, platform-independent procedure was developed that efficiently handles the large datasets produced by the finite element simulations. Results from computational mechanics using Abaqus and complex network analysis are presented.
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Giddings, J. Field-flow fractionation in the analysis of energy-related materials. Office of Scientific and Technical Information (OSTI), January 1989. http://dx.doi.org/10.2172/5414274.

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4

Harris, Kathleen, and Travis Dahl. Technical assessment of the Old, Mississippi, Atchafalaya, and Red (OMAR) Rivers : HEC-RAS BSTEM analysis of the Atchafalaya River. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45174.

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This report documents the bank erosion modeling performed under Task 6 (HEC-RAS Sediment Modeling) of the Old, Mississippi, Atchafalaya, and Red (OMAR) Rivers System Technical Assessment. The objectives of the bank erosion modeling effort were to compare the relative impact various flow scenarios might have on bank retreat on a stretch of the Atchafalaya River between Simmesport, LA, and the Whiskey Bay Pilot Channel. The effort included compilation of field and soil boring data, selection of bank retreat sites, creation of representative soil profiles for the reach, calibration of soil parameters to measured retreat rates, and modeling bank retreat and volume of material eroded under various flow scenarios. This modeling effort was intended for scenario comparison and should not be used as a prediction of exact rates of bank erosion. The study found that varying the amount of flow entering the Atchafalaya River from the Mississippi River could increase dramatically or significantly reduce the extent of bank erosion, relative to the current management scenario.
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JENNINGS, T. L. Work Flow Analysis Report Consisting of Work Management - Preventive Maintenance - Materials and Equipment. Office of Scientific and Technical Information (OSTI), December 1999. http://dx.doi.org/10.2172/798839.

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6

Riscoll, John R., and Paul H. Smith. Statistical analysis of low flow filter efficiency testing results for nuclear material storage container filters. Office of Scientific and Technical Information (OSTI), June 2011. http://dx.doi.org/10.2172/1074494.

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7

Russo, David, and William A. Jury. Characterization of Preferential Flow in Spatially Variable Unsaturated Field Soils. United States Department of Agriculture, October 2001. http://dx.doi.org/10.32747/2001.7580681.bard.

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Preferential flow appears to be the rule rather than the exception in field soils and should be considered in the quantitative description of solute transport in the unsaturated zone of heterogeneous formations on the field scale. This study focused on both experimental monitoring and computer simulations to identify important features of preferential flow in the natural environment. The specific objectives of this research were: (1) To conduct dye tracing and multiple tracer experiments on undisturbed field plots to reveal information about the flow velocity, spatial prevalence, and time evolution of a preferential flow event; (2) To conduct numerical experiments to determine (i) whether preferential flow observations are consistent with the Richards flow equation; and (ii) whether volume averaging over a domain experiencing preferential flow is possible; (3) To develop a stochastic or a transfer function model that incorporates preferential flow. Regarding our field work, we succeeded to develop a new method for detecting flow patterns faithfully representing the movement of water flow paths in structured and non-structured soils. The method which is based on application of ammonium carbonate was tested in a laboratory study. Its use to detect preferential flow was also illustrated in a field experiment. It was shown that ammonium carbonate is a more conservative tracer of the water front than the popular Brilliant Blue. In our detailed field experiments we also succeeded to document the occurrence of preferential flow during soil water redistribution following the cessation of precipitation in several structureless field soils. Symptoms of the unstable flow observed included vertical fingers 20 - 60 cm wide, isolated patches, and highly concentrated areas of the tracers in the transmission zone. Soil moisture and tracer measurements revealed that the redistribution flow became fingered following a reversal of matric potential gradient within the wetted area. Regarding our simulation work, we succeeded to develop, implement and test a finite- difference, numerical scheme for solving the equations governing flow and transport in three-dimensional, heterogeneous, bimodal, flow domains with highly contrasting soil materials. Results of our simulations demonstrated that under steady-state flow conditions, the embedded clay lenses (with very low conductivity) in bimodal formations may induce preferential flow, and, consequently, may enhance considerably both the solute spreading and the skewing of the solute breakthrough curves. On the other hand, under transient flow conditions associated with substantial redistribution periods with diminishing water saturation, the effect of the embedded clay lenses on the flow and the transport might diminish substantially. Regarding our stochastic modeling effort, we succeeded to develop a theoretical framework for flow and transport in bimodal, heterogeneous, unsaturated formations, based on a stochastic continuum presentation of the flow and a general Lagrangian description of the transport. Results of our analysis show that, generally, a bimodal distribution of the formation properties, characterized by a relatively complex spatial correlation structure, contributes to the variability in water velocity and, consequently, may considerably enhance solute spreading. This applies especially in formations in which: (i) the correlation length scales and the variances of the soil properties associated with the embedded soil are much larger than those of the background soil; (ii) the contrast between mean properties of the two subdomains is large; (iii) mean water saturation is relatively small; and (iv) the volume fraction of the flow domain occupied by the embedded soil is relatively large.
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8

Shmulevich, Itzhak, Shrini Upadhyaya, Dror Rubinstein, Zvika Asaf, and Jeffrey P. Mitchell. Developing Simulation Tool for the Prediction of Cohesive Behavior Agricultural Materials Using Discrete Element Modeling. United States Department of Agriculture, October 2011. http://dx.doi.org/10.32747/2011.7697108.bard.

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The underlying similarity between soils, grains, fertilizers, concentrated animal feed, pellets, and mixtures is that they are all granular materials used in agriculture. Modeling such materials is a complex process due to the spatial variability of such media, the origin of the material (natural or biological), the nonlinearity of these materials, the contact phenomenon and flow that occur at the interface zone and between these granular materials, as well as the dynamic effect of the interaction process. The lack of a tool for studying such materials has limited the understanding of the phenomena relevant to them, which in turn has led to energy loss and poor quality products. The objective of this study was to develop a reliable prediction simulation tool for cohesive agricultural particle materials using Discrete Element Modeling (DEM). The specific objectives of this study were (1) to develop and verify a 3D cohesionless agricultural soil-tillage tool interaction model that enables the prediction of displacement and flow in the soil media, as well as forces acting on various tillage tools, using the discrete element method; (2) to develop a micro model for the DEM formulation by creating a cohesive contact model based on liquid bridge forces for various agriculture materials; (3) to extend the model to include both plastic and cohesive behavior of various materials, such as grain and soil structures (e.g., compaction level), textures (e.g., clay, loam, several grains), and moisture contents; (4) to develop a method to obtain the parameters for the cohesion contact model to represent specific materials. A DEM model was developed that can represent both plastic and cohesive behavior of soil. Soil cohesive behavior was achieved by considering tensile force between elements. The developed DEM model well represented the effect of wedge shape on soil behavior and reaction force. Laboratory test results showed that wedge penetration resistance in highly compacted soil was two times greater than that in low compacted soil, whereas DEM simulation with parameters obtained from the test of low compacted soil could not simply be extended to that of high compacted soil. The modified model took into account soil failure strength that could be changed with soil compaction. A three dimensional representation composed of normal displacement, shear failure strength and tensile failure strength was proposed to design mechanical properties between elements. The model based on the liquid bridge theory. An inter particle tension force measurement tool was developed and calibrated A comprehensive study of the parameters of the contact model for the DEM taking into account the cohesive/water-bridge was performed on various agricultural grains using this measurement tool. The modified DEM model was compared and validated against the test results. With the newly developed model and procedure for determination of DEM parameters, we could reproduce the high compacted soil behavior and reaction forces both qualitatively and quantitatively for the soil conditions and wedge shapes used in this study. Moreover, the effect of wedge shape on soil behavior and reaction force was well represented with the same parameters. During the research we made use of the commercial PFC3D to analyze soil tillage implements. An investigation was made of three different head drillers. A comparison of three commonly used soil tillage systems was completed, such as moldboard plow, disc plow and chisel plow. It can be concluded that the soil condition after plowing by the specific implement can be predicted by the DEM model. The chisel plow is the most economic tool for increasing soil porosity. The moldboard is the best tool for soil manipulation. It can be concluded that the discrete element simulation can be used as a reliable engineering tool for soil-implement interaction quantitatively and qualitatively.
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Knight, T. D., R. G. Steinke, and C. Mueller. Thermal and flow analyses of the Nuclear Materials Storage Facility Renovation Title I 60% design. Office of Scientific and Technical Information (OSTI), August 1998. http://dx.doi.org/10.2172/348917.

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10

Savosko, V., I. Komarova, Yu Lykholat, E. Yevtushenko, and T. Lykholat. Predictive model of heavy metals inputs to soil at Kryvyi Rih District and its use in the training for specialists in the field of Biology. IOP Publishing, 2021. http://dx.doi.org/10.31812/123456789/4511.

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The importance of our research is due to the need to introduce into modern biological education methods of predictive modeling which are based on relevant factual material. Such an actual material may be the entry of natural and anthropic heavy metals into the soil at industrial areas. The object of this work: (i) to work out a predictive model of the total heavy metals inputs to soil at the Kryvyi Rih ore-mining & metallurgical District and (ii) to identify ways to use this model in biological education. Our study areas are located in the Kryvyi Rih District (Dnipropetrovsk region, Central Ukraine). In this work, classical scientific methods (such as analysis and synthesis, induction and deduction, analogy and formalization, abstraction and concretization, classification and modelling) were used. By summary the own research results and available scientific publications, the heavy metals total inputs to soils at Kryvyi Rih District was predicted. It is suggested that the current heavy metals content in soils of this region due to 1) natural and 2) anthropogenic flows, which are segmented into global and local levels. Predictive calculations show that heavy metals inputs to the soil of this region have the following values (mg ⋅ m2/year): Fe – 800-80 000, Mn – 125-520, Zn – 75-360, Ni – 20-30, Cu – 15-50, Pb – 7.5-120, Cd – 0.30-0.70. It is established that anthropogenic flows predominate in Fe and Pb inputs (60-99 %), natural flows predominate in Ni and Cd inputs (55-95 %). While, for Mn, Zn, and Cu inputs the alternate dominance of natural and anthropogenic flows are characterized. It is shown that the predictive model development for heavy metals inputs to soils of the industrial region can be used for efficient biological education (for example in bachelors of biologists training, discipline "Computer modelling in biology").
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