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781
EMISSIONS MONITORING OF HEAVY METALS AND THEIR COMPOUNDS RESULTED FROM COMBUSTION PROCESSES IN CLINKER KILNS IN ROMANIA
Published 2017-03-01“… With the dust arising from the clinker kilns and grill coolers (the major pollution sources in a cement plant), also heavy metals and their compounds (in the form of powders and vaporous), originating from fuels and raw materials, are pumped into the air. The paper presents some aspects regarding the monitoring of heavy metals contained in the combustion gases from a Romanian cement factory. …”
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782
Bioethanol Production from Fermentable Sugar Juice
Published 2014-01-01“…Mainly, three types of raw materials, that is, sugar juice, starchy crops, and lignocellulosic materials, are being used for this purpose. …”
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783
Research progress on characteristics of secondary aluminum dross and its detoxification and utilization
Published 2025-03-01“…However, owing to the considerable volatilization of salts, the pyrometallurgical process suffers high energy consumption, serious corrosion of equipment, and heavy restrictions on the composition of the raw materials. In contrast, the hydrometallurgical process focuses on achieving harmless utilization of secondary aluminum dross, representing an environmentally friendly and more inclusive detoxification of raw materials. …”
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784
Life cycle assessment of paper products based on recycled and virgin fiber
Published 2023-11-01“…BACKGROUND AND OBJECTIVES: Virgin wood fiber and recycled waste paper are the main raw materials for paper production. Virgin wood-fiber paper appears less favorable than recycled paper, as recycled paper generally consumes more natural resources. …”
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785
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786
La part oubliée de l’étude des pharmacopées traditionnelles africaines
Published 2022-06-01“…They explicitly intended to lay the foundations of an ethno-pharmacology rather than only the ethnobotanical part, because it focused on the preparation and administration of the pharmakon to treat disorders, “diseases”, and note solely on the plant raw materials. But the biological (etic) orientation has prevailed. …”
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787
Trajectoires territoriales d’un nouveau centre extractif mondialisé. L’exemple des Andes argentines septentrionales
Published 2016-01-01“…Exploiting these territories as reservoirs of raw materials was uncontroversial at the beginning of the century; however, this approach is now being contested because it leads to little territorial development. …”
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788
Evaluation of Phsicochemical Properties, Drying Process and Drying Conditions of Natural Rubber Latex and Ribbed Smoked Sheets
Published 2025-02-01“…The field latex is the primary material for ribbed smoked sheet (RSS) production which is one of the raw materials feeding the rubber industry.Ribbed smoked sheetcan beproduced from latex through various processing stages such as tapping, cleaning, dilution, coagulation, sheet formation, and smoke drying. …”
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789
Preparation and Optical Properties of Compound Nanopowder Art Ceramics
Published 2022-01-01“…This study uses high-purity aluminate (MgAl2O4) powder for transparent ceramics, doped with yellow nanophosphor as raw materials, through a sintering process in oxygen atmosphere, sintering combined with heat treatment, and isostatic pressing to prepare transparent ceramics. …”
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790
System process documentation of processing of moringa leaves into moringa powder
Published 2025-01-01“…As a recommendation, increasing moringa leaves for a stable supply of raw materials or establishing a small-scale processing facility for lower investment costs.…”
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791
RESEARCH ON KEY PARAMETER FOR FORKLIFT STABILITY
Published 2022-01-01“…Domestic design of portal frame channel steel is based on analogy, which leads to its high safety factor, waste of raw materials, and weak theory and computer assistance. …”
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792
Potential Environmental Benefits of Ultralight Particleboards with Biobased Foam Cores
Published 2015-01-01“…The results show that most of the environmental impacts are related to raw materials and end-of-life stages. Both approaches show that the exchange of PB with ULPB with a foam core based on PLA leads to a reduction of greenhouse gas emissions. …”
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793
THE IMPACT OF EXCHANGE RATE VOLATILITY AND INFLATION ON THE NIGERIAN ECONOMY
Published 2024-06-01“…Also, policies that would reduce overdependence on foreign raw materials for production should be encouraged. …”
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794
STUDIES OF MINERAL COMPOSITION OF ORES OF THE KUMTOR DEPOSIT (CENTRAL TIEN SHAN) BY QXRD AND XRF METHODS
Published 2022-09-01Get full text
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795
地铁转向架排障器的结构改进及疲劳性能评估
Published 2021-01-01“…In view of the fracture and edge crack initiation of the bogie cowcatcher during the service of a metro train,the failure causes are analyzed,and a fatigue performance evaluation method combining finite element analysis and dynamic stress test is proposed to verify the rationality of improving the structural design of the cowcatcher.Firstly,the structure of the cowcatcher with fracture or edge crack is analyzed in the aspects of design,structure,manufacturing and raw materials,and the corresponding structural improvement scheme is proposed.Secondly,the static strength and fatigue strength of the structure for the new cowcatcher are analyzed to clarify the dangerous parts according to the EN13749 standard.Thirdly,determine the strain gauge layout plan and conduct line tests considering the simulation analysis results and the operating space comprehensively.Finally,the fatigue performance evaluation of the cowcatcher is carried out by miner’s linear cumulative damage rule and IIW recommended S-N curve.The results show that the fatigue performance of the new type of cowcatcher based on finite element analysis and dynamic stress test meet the requirements,and the two support each other to further verify the rationality of the new structure design.Simultaneously,the simulation analysis results provide a theoretical reference for the reasonable arrangement of measuring points.…”
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796
TECHNO ECONOMIC ANALYSIS OF BIOMASS AS AN ALTERNATIVE ENERGY HOUSEHOLDS AND SMALL INDUSTRIES
Published 2024-12-01“…Sources of biomass raw materials that have promising potential are pine sawdust and coconut shell waste. …”
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797
Physicochemical Properties of Handere Clays and Their Use as a Building Material
Published 2015-01-01“…Organic matter content and loss on ignition analysis of raw materials are good for all the studied samples. In summary, Handere clays can be used as building materials in bricks, roof tiles, and cement and as a binder.…”
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798
Beginning of the metal age in the central Balkans according to the results of the archeometallurgy
Published 2009-01-01“…It is confirmed that this metallurgy depended on the contemporary mining, i.e. the available sources of the raw materials. It is also corroborated by the discovery of two Early Eneolithic copper mines: Rudna Glava in Eastern Serbia and Ai-Bunar in Bulgaria /first half and the middle of the 5th millennium BC/. …”
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799
A strategic development mechanism to improve the competitiveness and sustainability of metallurgical enterprises
Published 2024-08-01“…In recent years, in the process of technological sovereignty formation, increasing competitiveness and formation of conditions for the effective development of industrial metallurgical enterprises cause a lot of discussions, the essence of which is reduced to discussing the sanctions imposed on Russian industrial enterprises, affecting the raw materials and components supply, so the research topic is relevant to the domestic industry. …”
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800
Pricing and Remanufacturing Decisions of a Decentralized Fuzzy Supply Chain
Published 2013-01-01“…Particularly, there is one manufacturer who has incorporated a remanufacturing process for used products into her original production system, so that she can manufacture a new product directly from raw materials or from collected used products. The manufacturer then sells the new product to two different competitive retailers, respectively, and the two competitive retailers are in charge of deciding the rates of the remanufactured products in their consumers’ demand quantity. …”
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