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Journal articles on the topic 'Potential tonnage'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Babchuk, Ye. "Compensated gross tonnage (CGT) as civil shipbuilding output indicator." Transactions of the Krylov State Research Centre 1, no. 395 (2021): 170–80. http://dx.doi.org/10.24937/2542-2324-2021-1-395-170-180.

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Object and purpose of research. This paper justifies the prospects of compensated gross tonnage (CGT) as a main indicator for output potentials of Russian shipyards. Materials and methods. This paper analyses foreign and Russian publications for the most popular ship types built and delivered in recent years, as well as those under construction now, with an insight to Russian economy needs in ships and other marine technology. Main results. CGT indicator commonly used for marketing and statistical purposes, is the most unbiased measurement unit for the potential of separate shipyards and the e

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2

Simkin, L. M. "One of the directions of development of Russian fisheries of the coast of the African continent." Fisheries, no. 1 (February 26, 2025): 100–104. https://doi.org/10.36038/0131-6184-2024-1-100-104.

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The paper analyses the way to restore Russian cooperation with the countries of the African continent, based on the experience of the Pioneer Base of the Oceanic Fishing Fleet (PBOFF). The potential of joint operation of small-tonnage fishing vessels in the coastal waters of African countries, joint shipbuilding and ship repair activities are being considered. The possibility of introducing small-tonnage fishing vessels into coastal and economic zones is much higher than that of vessels with a length of 55 m and longer. The construction and operation of small vessels is less expensive.

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Purnomo, Hendro, Rizqi Prastowo, Muhammad Hafizh Hibullah, and Setyo Pambudi. "Estimasi sumberdaya andesit menggunakan metode ordinary kriging berdasarkan pengukuran geolistrik di PT. Zlaw Group Boyolali, Jawa Tengah." Jurnal Teknologi Mineral dan Batubara 19, no. 1 (2023): 1–13. http://dx.doi.org/10.30556/jtmb.vol19.no1.2023.1336.

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PT. Zlaw Group Boyolali is a company of andesite mining located in Wates Hamlet, Seboto Village, Gladagsari District, Boyolali Regency, Central Java Province. The potential of andesite in the area is encouraging and the absence of supporting data about the distribution and resources of andesite brings PT. Zlaw Group Boyolali to conducting exploration. The objective of this study is to analyze the interpretation of geoelectric measurements of the dipole-dipole configuration and calculate the volume of andesite resources based on geostatistics optimization at the research location and compare th

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Bigvava, D. G., and A. Y. Smirnov. "CONSTRUCTION OF A LARGE-TONNAGE FLEET IN RUSSIA: PROBLEMS, PROSPECTS, INNOVATIONS." Intellect. Innovations. Investments, no. 6 (2023): 32–42. http://dx.doi.org/10.25198/2077-7175-2023-6-32.

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The construction of a large-tonnage fleet is an important factor in the development of maritime trade and the economy as a whole. In recent years, Russian shipbuilders have faced a number of problems that negatively affect the pace of socio-economic development of the industry, do not allow to fully use its potential in the production of civilian products. The purpose of the article is to identify the main problems in the process of building a large–tonnage fleet in the Russian Federation, to indicate the prospects for the development of the industry. The main content of the conducted research

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5

Smith, Sadie, Andrew Braham, Sarah Hernandez, and John Kent. "Development of a Cost Estimation Framework for Potential Transload Facilities." Transportation Research Record: Journal of the Transportation Research Board 2672, no. 9 (2018): 24–34. http://dx.doi.org/10.1177/0361198118774690.

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As the cost of transportation continues to rise and there is a growing push for a more environmentally friendly transportation network, optimizing mode distributions becomes an attractive solution. One way to optimize mode distributions is through strategically located freight transfer facilities, such as transload facilities. While there are many benefits to this type of facility, such as the emissions savings or pavement damage reductions garnered by shifting commodity tonnage onto alternative modes of transport, it is also essential that transportation planners understand the costs associat

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Skardžius, Juras, and Justinas Gargasas. "Alternative Real-Time Part Quality Monitoring Method by Using Stamping Force in Progressive Stamping Process." Journal of Manufacturing and Materials Processing 9, no. 4 (2025): 104. https://doi.org/10.3390/jmmp9040104.

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The manufacture of automotive parts using progressive stamping tools demands high precision and efficiency to meet industry standards. This research explores integrating quality monitoring techniques, focusing on load sensors and tonnage monitoring, to enhance the production process. Progressive tools, which perform multiple operations within a single press cycle, are critical for maintaining dimensional accuracy and minimizing defects. This research examines the correlation between real-time load sensor data and the tonnage applied during stamping, aiming to detect anomalies and deviations th

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7

Widiatmoko, Fajar Rizki, Yazid Fanani, Yohanes Jone, et al. "PETROLOGI DAN ESTIMASI SUMBER DAYA BATUAN TANAH URUG PADA PADAWILAYAH EKSPLORASI DI DAERAH TAROKAN, KAB. KEDIRI, JAWA TIMUR." KURVATEK 7, no. 2 (2022): 33–44. http://dx.doi.org/10.33579/krvtk.v7i2.3160.

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Kediri Regency is a potential area for mining minerals. One of the rock excavation materials found in Kediri Regency is the type of andesite and backfill. Backfill is a mineral as a result of weathering of the parent rock, which is rich in andesite fragments and silica elements. This research was conducted at the exploration location of Tarokan Village, Tarokan District, Kediri Regency. The study was conducted using petrological analysis to obtain rock types and estimates of the availability of these minerals at the research site. Based on the results of petrological analysis, it shows that th

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Priambudi, Bagus Nuari, Nofa Martina Ariani, and Muhammad Indra Hadi Wijaya. "Finding Optimal Location Development UPPKB In South Sumatera Province Using Multi-Criteria Analysis." Jurnal Transportasi Multimoda 21, no. 2 (2024): 80–91. http://dx.doi.org/10.25104/mtm.v21i2.2138.

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The distribution of commodity transportation is a crucial factor for the sustainability and continuity of economic activities in specific regions. Shipments occur daily, especially on main roads, with the majority of goods transported exceeding tonnage limits when passing through roads. If this continues without control and security measures, it will lead to a deterioration of the physical quality of the road, disrupting the distribution of goods transportation. The Vehicle Weighing Station (UPPKB) is a form of control and security implemented by the government to regulate the transportation o

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9

Gilmutdinov, D. V., P. E. Mikriukov, and A. V. Kolchin. "Technology of Low-Tonnage LNG Production Based on the Potential of Existing Gas Networks." IOP Conference Series: Earth and Environmental Science 459 (April 15, 2020): 032033. http://dx.doi.org/10.1088/1755-1315/459/3/032033.

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10

Lukuman, Abudulawal, Adetona Amidu Sikiru, Ayoade Adeagbo Olusola, and Adesanjo Adejumo Saheed. "Overburden Thickness and Potential Tonnage Estimate of Olode-Gbayo Pegmatite Deposit, Southwestern Nigeria, Using Electrical Resistivity Method." Journal of Geography, Environment and Earth Science International 10, no. 2 (2017): 1–12. https://doi.org/10.9734/JGEESI/2017/32811.

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Prominent locations in the Nigerian basement complex are known to harbor precious rocks and gemstones, in addition to the basement rocks being quarried for engineering construction. However, reserve estimates of these rocks and mineral deposits are largely unknown. Geophysical investigations have been undertaken at Olode-Gbayo village in Ibadan, southwestern, Nigeria. The primary objectives are to estimate overburden thickness and extend results to estimate probable gross basement tonnage and probable reserve of mineralized pegmatite in the basement rock. The Olode-Gbayo pegmatite has been fou

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11

Ben Zaied, Younes, Nidhaleddine Ben Cheikh, Pascal Nguyen, and Mohamed Badrane Mahjoub. "Waste management policy and employment: the case of France." Environmental Economics 9, no. 1 (2018): 38–46. http://dx.doi.org/10.21511/ee.09(1).2018.03.

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This paper examines whether a causal relationship exists between waste tonnage and employment when the waste collection is entrusted to a private operator in France (i.e. waste management policy by delegation of service). The empirical investigation is based on weekly data for four waste streams for the period from January 2015 to June 2017. Using nonstationary time series techniques including cointegration, VECM (Vector Error Correction Model) and long-run causality test of Toda and Yamamoto (1995) within a bivariate framework, the results demonstrate potential causal negative relationship be

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12

Nedkvitne, Eirik Nøst, Dag Øistein Eriksen, and Jon Petter Omtvedt. "Grade and Tonnage Comparison of Anthropogenic Raw Materials and Ores for Cu, Zn, and Pb Recovery." Resources 12, no. 3 (2023): 33. http://dx.doi.org/10.3390/resources12030033.

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Primary metal production operates with large tonnages and takes advantage of economies of scale. Metal recycled from low-value waste streams, competing in the same global metal market as primary production, will be more competitive by also taking advantage of up-scaling. However, an overview of metal tonnages in low-value waste streams to see upscaling potential needs to be provided in the literature. In response, this study provides estimates of copper, zinc, and lead metal tonnages in waste incineration ash—A major waste stream going to landfills. Metal concentrations and tonnages are compar

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13

Nurjayanty, Yunita, Djamaluddin Djamaluddin, and Agus Ardianto Budiman. "Block Model of Laterite Nickel Reserve in the Sorowako Village Research Area, South Sulawesi Province." Journal of Geology and Exploration 1, no. 1 (2022): 18–21. http://dx.doi.org/10.58227/jge.v1i1.5.

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The manufacture of laterite nickel deposit model blocks is one of the stages after exploration activities are carried out in an area that shows potential resources that are feasible to be exploited. The purpose of this study was to determine the tonnage value of an estimated resource of saprolite and limonite ore deposits in the drilling area. The research method is the implementation of fieldwork, which includes a survey of the area to be drilled, tools and materials used in drilling production, and determining the stages in making model blocks. The data used in this study are data from analy

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14

Androsova, Svetlana. "Allocation of liabilities between parties involved in shipping LNG from eastern Australia." APPEA Journal 53, no. 2 (2013): 461. http://dx.doi.org/10.1071/aj12072.

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LNG shipping tonnage represents about 400 vessels worldwide and it has high safety records compared with other types of tonnage. Serious attention to the operational safety of LNG vessels is dictated by their high value as assets, substantial time required to build new LNG vessels, limited availability of replacement tonnage on the market, heavy dependence of the LNG supply chain on shipping efficiency and reliability, and high costs of delay in LNG supply. Notwithstanding the high safety record of LNG vessels, shipping is historically considered a high-risk enterprise. Liability of shipowners

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15

Jowitt, Simon M., Chris C. Medlin, and Ray A. F. Cas. "The rare earth element (REE) mineralisation potential of highly fractionated rhyolites: A potential low-grade, bulk tonnage source of critical metals." Ore Geology Reviews 86 (June 2017): 548–62. http://dx.doi.org/10.1016/j.oregeorev.2017.02.027.

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Abudulawal, Lukuman, Sikiru Amidu, Olusola Adeagbo, and Saheed Adejumo. "Overburden Thickness and Potential Tonnage Estimate of Olode-Gbayo Pegmatite Deposit, Southwestern Nigeria, Using Electrical Resistivity Method." Journal of Geography, Environment and Earth Science International 10, no. 2 (2017): 1–12. http://dx.doi.org/10.9734/jgeesi/2017/32811.

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17

Sulaiman, S., M. A. Abdullah, T. M. Mansur, and N. Roesa. "Harmonization of laws related to the protection of artisanal fishermen fishing grounds in Aceh Province." IOP Conference Series: Earth and Environmental Science 869, no. 1 (2021): 012054. http://dx.doi.org/10.1088/1755-1315/869/1/012054.

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Abstract This paper aims to examine how to protect of artisanal fishermen fishing ground and the policies that protect them. Small-scale fisher fishing grounds has to have a special attention due to their limitation. They are using very simple fishing gear, so they can’t sail far away from the coastal waters. The Fishing law give a specific attention for this matter, by limiting fishermen with 5 gross tonnage (GT) are only able to conduct their activities within the coastal waters. This study combines legal documents and the results of interviews with fishermen on 5 GT vessel. this studi of fi

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18

Wu, Hantao, Zheng Yang, Chunting Lu, Zhongming Li, Chen Guo, and Guohua Sha. "Study on the Stability of Unbalanced Rotation of Large-Tonnage T-Shaped Rigid Frame Bridges." Buildings 14, no. 12 (2024): 3927. https://doi.org/10.3390/buildings14123927.

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In the design of cantilever method bridge anti-overturning structures, the appropriate gap between the supporting foot and the lower rotating table is a crucial factor. It affects the distribution of the upper load and the friction force of the rotating structure, playing a key role in stability control. Currently, a reasonably defined range for this gap based on engineering practice has not been established. This study, set against the backdrop of practical engineering for large-tonnage rotational bridges, analyzes potential overturning instability forms during rotation. It provides a detaile

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19

Wahid, Muhammad Abdul, and Eddy Winarno. "Bauxite Resource Estimation Analysis Using Ordinary Kriging and Inverse Distance Weighting in West Kalimantan." Journal of Earth and Marine Technology (JEMT) 4, no. 2 (2024): 255–64. http://dx.doi.org/10.31284/j.jemt.2024.v4i2.5340.

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PT X is a mining company engaged in bauxite mining which is located in Nanga Tayap District, Ketapang Regency, West Kalimantan Province. Currently the company is carrying out further exploration activities to find potential bauxite resources which will later be upgraded into reserves for mining. In resource estimation, there are several methods that can be used, such as the Nearest Neighbor Point method, Inverse Distance Weighting, and Ordinary Kriging. This research aims to analyze two resource estimation methods, namely Inverse Distance Weighting and Ordinary Kriging for resource estimation

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20

Sabanov, Sergei, Abdullah Rasheed Qureshi, Zhaudir Dauitbay, and Gulim Kurmangazy. "A Method for the Modified Estimation of Oil Shale Mineable Reserves for Shale Oil Projects: A Case Study." Energies 16, no. 16 (2023): 5853. http://dx.doi.org/10.3390/en16165853.

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The amount if oil shale resources throughout the world has been roughly estimated in accordance with various resource estimation methods. However, in some instances, detailed and comprehensive supporting methodologies for the estimation of commercial shale oil reserves have not been presented. The goal of this study is to develop a comprehensive method for the modified estimation of oil shale mineable reserves for shale oil projects. The methodology characterises oil shale according to its calorific value, oil content, conditional organic mass, and ash content by utilising a Monte Carlo simula

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21

Ray, Kalyan Kumar. "Simpler Estimation of Fracture Toughness during Material Development, Process Optimization and Quality Control of Structural Materials." Materials Science Forum 736 (December 2012): 192–206. http://dx.doi.org/10.4028/www.scientific.net/msf.736.192.

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Existing standard International methods to estimate fracture toughness of structural materials as documented in ASTM standard E-1820 are neither appropriate for material development due to the requirement of considerable volume nor suitable for process optimizations like deciding suitable heat treatment or for quality control of tonnage materials at the stage of production due to techno-economic reasons owing to their time-consuming nature. This report overviews several investigations often in their feasibility stage and aims to suggest a common solution to all these problems considering measu

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22

Zorya, E. I., I. V. Gladkov, and V. S. Neshchadimov. "CLASSIFICATION OF LOSSES DURING TURNOVER AT THE FACILITIES OF LOW-TONNAGE CONSUMPTION OF LIQUEFIED NATURAL GAS." Oil and Gas Technologies 143, no. 6 (2022): 9–14. http://dx.doi.org/10.32935/1815-2600-2022-143-6-9-14.

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The small-scale liquefied natural gas industry is an emerging industry that is already profitable and highly scalable, with significant potential for further expansion. The industry has advantages in generating electricity for industrial and domestic needs in remote areas, as it allows gasification of facilities without direct connection to the main natural gas pipeline. Small scale LNG businesses can benefit from the ongoing active transition to low-carb energy as market and regulatory pressure increases. Losses of marketable products arising from the operation of low-tonnage LNG consumption

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Hassan, Mahmood Ul, Muhammad Akhlaq Muddasar, Naeem Fiaz, et al. "UNLOCKING COMMERCIAL POTENTIAL: CPF 249, A MEDIUM-MATURING SUGARCANE VARIETY FOR PUNJAB." Pakistan Journal of Biotechnology 21, no. 2 (2024): 501–6. http://dx.doi.org/10.34016/pjbt.2024.21.02.917.

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The substantial growth of sugar industry and the need to ensure national food security entail the extension of crushing season for sugar mills in Punjab by introducing medium and late maturing sugarcane varieties. The variety CPF 249 is a cross of CP 87-1628 × CP 84-1198, was developed from fuzz imported in 2002 from the Sugarcane Station in Canal Point, USA, and subsequently grown at the Sugarcane Research Institute, Faisalabad. Following successful initial selection, CPF 249 underwent four years of testing in preliminary, semi-final, and final varietal trials from 2008 to 2012. This medium-m

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24

Rukayah, Rukayah, Aji Syailendr, and Melinda Dwi Erintina. "Estimasi Sumberdaya Andesit dan Breksi Piroklastik Sebagai Bahan Konstruksi PT. Tepat Guna Referindo Lombok Timur." MINERAL 9, no. 1 (2024): 39–44. http://dx.doi.org/10.33019/mineral.v9i1.5425.

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Estimate of andesite and pyroclastic breccia resources at PT Tepat Guna Reforindo has been carried out. Which is an area with potential for non-metallic mining materials. This research was carried out using the Civil 3D Gridding method. One of the non-metallic minerals found in East Lombok district is andesite rock and pyroclastic breccia. The research was carried out using petrological analysis methods to obtain rock types and estimate the availability of minerals and sieve analysis to obtain density values at the research location. Based on the results of petrological analysis, it shows that

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Sihombing, Adolf Leopold S. M., and Ragil Darmawan. "Municipal Solid Waste Characteristic and Energy Potential in Piyungan Landfill." Applied Mechanics and Materials 898 (May 2020): 58–63. http://dx.doi.org/10.4028/www.scientific.net/amm.898.58.

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The daily waste tonnage at Piyungan landfill is 600 tons consisting of organic and combustible waste which can be used as an energy source. The aim of this study is to determine the potential energy of waste in the Piyungan landfill by its characteristics based on technology options including landfill gas, anaerobic digestion, gasification, and incineration. The Piyungan landfill mostly contain organic waste, up to 62.1% and combustible waste (RDF) at 26.8%. Moisture content of Piyungan’s RDF is higher than international standards for RDF as raw material in several countries. The various resul

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Zhu, Zhi Xiong, Lenka Kuzmikova, Hui Jun Li, Liang Chen, Bob de Jong, and Frank J. Barbaro. "Grain Coarsening Characteristics of Modern Nb Microalloyed Steels." Materials Science Forum 753 (March 2013): 325–28. http://dx.doi.org/10.4028/www.scientific.net/msf.753.325.

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Modern steelmaking technologies utilizing microalloyed steel designs have been responsible for enormous economic benefits for both the steelmaker and fabricator. What has not been acknowledged is the environmental benefit that high strength steels have produced in terms of reduced steel usage in major infrastructure projects. The judicial use of microalloying has the potential to further reduce total tonnage requirements while delivering enhanced operational performance and service life. Various projects around the world have begun to recognize these recent microalloying developments. This pap

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Špelić, Ivana, Alka Mihelić-Bogdanić, and Rajka Budin. "Optimization of energy savings in shoe sole production." Koža & obuća 68, no. 1 (2019): 26–31. http://dx.doi.org/10.34187/ko.68.1.7.

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Since 1970’s, the most popular shoe soles are (EVA) soles, made from Ethylene Vinyl Acetate, copolymer consisting of ethylene and vinyl acetate. The thermosets and elastomers (rubbers), among them accounting EVA, encompasses around 30% of the tonnage of all synthetic polymers produced, with the synthetic rubbers exceeding the tonnage of natural rubber. With that in mind, the energy savings in rubber processing plants are of great importance and the paper analyses the potential of energy savings in shoe soles production process made of Ethylene Vinyl Acetate (EVA). The shoe soles made from EVA

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Maytakov, A., and Aleksandr Sarafanov. "Plant- and Whey-Based Sustainable Technology: Development Potential." Food Processing: Techniques and Technology 50, no. 2 (2020): 261–72. http://dx.doi.org/10.21603/2074-9414-2020-2-261-272.

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Introduction. According to the Lighthouse research company, energy consumption in Russian industry exceeds the level of similar enterprises in other countries by 40–220%. In this regard, the urgent task is to find ways to improve the technological level of production in the country. The article features multi-assortment low-tonnage complex food technological in agriculture.  Study objects and methods. Industrial agro-complexes that implement agricultural production technologies, storage, and processing technologies can solve the problem of food security in Russia. The research focused on

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Piwońska, Kalina, and Łukasz Kryszak. "The eco-efficiency of fisheries in EU countries." Economics and Environment 89, no. 2 (2024): 691. http://dx.doi.org/10.34659/eis.2024.89.2.691.

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The main goal of this article was to (1) assess the dynamics of eco-efficiency of fisheries in EU countries and its components and (2) identify potential sources of inefficiencies and efficiency surpluses through slack analysis. The hybrid data envelopment analysis (DEA) model was used for the 2008-2019 period. Progress in eco-efficiency was found among 11 countries (out of 23), but the average eco-efficiency index for the sample was 0.988. Differences in the levels and dynamics of eco-efficiency between the studied countries were mainly driven by the efficiency change component, i.e. internal

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Djamaluddin, Djamaluddin, Mulhadramy Mulhadramy, and Nurliah Jafar. "Comparative Analysis of Mined Reserve Tonnage on "M" Hill Between Mine Plan and Mining Realization." Journal of Geology and Exploration 1, no. 1 (2022): 22–29. http://dx.doi.org/10.58227/jge.v1i1.6.

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In mining activities, there is often a discrepancy between the plan and actual conditions in the field; if not identified early, this discrepancy will undoubtedly have the potential to cause losses if it continues to repeat itself. This study aimed to determine the factors driving the difference between the mine plan and mining realization. This research uses Pit design data, mine progress measurement data, material movement data, and two mine plan data, namely the backup plan model resulting from detailed exploration and the backup plan model data from the input drill results. From the result

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Muhamad, Siti Nur, Mohamad Abu Ubaidah Amir, Mohd Norsyarizad Razali, et al. "Quality Evaluation of Treated Ballast Seawater for Potential Reuse." International Journal of Engineering & Technology 7, no. 4.29 (2018): 1–8. http://dx.doi.org/10.14419/ijet.v7i4.29.21833.

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The International Convention for the Control and Management of Shipsâ€™ Ballast Water and Sediments (BWM Convention) has already commencing on 8 September 2017 after ratified by 51 States represent 35% of the global gross tonnage in September 2016. However, there is no value recovered for the treated ballast water as it simply discharged during de-ballasting. In order to evaluate value creation of treated ballast water, three seawater applications which are seawater toilet flushing, cooling tower and desalination was studied and compared with treated ballast seawater. An exploratory study was

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Çatuk, Cüneyt. "Forecasting Turkey’s Air Cargo Tonnage: A Comparative Analysis of Statistical Techniques and Machine Learning Methods." Journal of Aviation 9, no. 1 (2025): 109–17. https://doi.org/10.30518/jav.1582814.

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With the expanding global economy, the demand for air logistics continues to grow, further emphasizing its significance. However, this increased demand also presents a barrier to the growth of the air transportation sector, which is marked by a high degree of vulnerability. This study aims to forecast cargo volumes in the air logistics sector, which holds considerable growth potential. To achieve this, two statistical models (SARIMA and ARIMAX) and three machine learning methods (Gradient Boosting Regression Tree, Random Forest, and Support Vector Regression) were utilized in a comparative ana

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Loboichenko, V. "FORMATION OF A METHOD FOR THE PREREQUISITES IDENTIFICATION OF THE EXPANSION OF EMERGENCIES DUE TO THE ACCUMULATION OF HARMFUL SUBSTANCES AT CHEMICAL OBJECTS." Municipal economy of cities 1, no. 154 (2020): 298–305. http://dx.doi.org/10.33042/2522-1809-2020-1-154-298-305.

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Emergencies related to man-made accidents at potentially hazardous sites occur in different countries of the world. In Ukraine, man-made emergencies make up 30% of their total. It is noted that low-tonnage production does not have such capacity and efficient engineering, technical methods for the prevention of object emergencies, including for reasons of gradual accumulation of harmful substances and unclassified emergencies. The analysis of emergencies at chemical objects of low-tonnage production in the world and in Ukraine showed the lack of common approaches to preventing the emergencies,

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Tjandra, Winaldo, Candra Ginting, and Sri Gunawan. "Penentuan Dosis Pupuk Berdasarkan Data Tonase Tandan Buah Segar (TBS) pada Perkebunan Kelapa Sawit." AGROISTA : Jurnal Agroteknologi 7, no. 1 (2023): 8–16. http://dx.doi.org/10.55180/agi.v7i1.341.

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The productivity of Fresh Fruit Bunch (FFB) in Indonesia is relatively low with an average productivity of below 15 tonnes.ha-1.year-1,which is still very far below its potential, which is around 25 tonnes.ha-1. year-1, one of the contributing factors is the application of fertilizers. neither the type nor the dose has been done precisely. Research on Determining Fertilizer Dosage Based on FFB tonnage data for oil palm plantations has been carried out from March to October 2022 at a private oil palm plantation company located in Nunukan Regency, North Kalimantan Province. The research was carr

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Minto, Andrew, Daniel Gilmour, M. Ehsan Jorat, and Irene Tierney. "Potential Benefits and Disbenefits of the Application of Water Treatment Residuals from Drinking Water Treatment Processes to Land in Scotland: Development of a Decision Support Tool." Sustainability 15, no. 12 (2023): 9268. http://dx.doi.org/10.3390/su15129268.

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Water Treatment Residuals (WTRs) are a by-product of the addition of chemical coagulants to water during the water treatment process and are a mixture of water and organic and inorganic matter that coagulates during the treatment process. WTRs often contain metals such as iron, aluminium, and manganese that have been oxidised as part of the process or are constituents of the coagulation chemicals used. The metals within WTRs are of interest with regard to applying these sludges to agricultural land. WTRs can also contain beneficial organic matter and nutrients (primarily nitrogen). The nature

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Brigham, Lawson W. "The Northern Sea Route, 1996." Polar Record 33, no. 187 (1997): 333–36. http://dx.doi.org/10.1017/s0032247400025420.

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AbstractDuring 1996, Russia's Northern Sea Route (NSR) continued to attract international attention. While overall tonnage carried along the NSR declined to approximately two million tonnes, more operations in the Russian maritime Arctic involved foreign flag ships. Ships of Arctic Shipping Services, a Russian-Finnish joint venture company, delivered fuel supplies to ports along the length of the Russian Arctic coast. Twenty-four polar and sub-Arctic icebreakers remained in the Russian fleet as of 1 January 1996. Notable research results of the International NSR Programme, published in 1996dur

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Molchanov, Anatoly, Artem Terekhov, Gleb Kozlov, Ivan Lebedev, Elena Horochorina, and Vladislav Gusev. "Aldan-Vilyui ore-placer gold-bearing province, Russia." Ores and metals, no. 2 (August 16, 2021): 25–39. http://dx.doi.org/10.47765/0869-5997-2021-10009.

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Analysis of materials of the State Geological Map 1 : 1 000 000 (3rd generation) for the southern Sakha–Yakutiya territory in the course of compilation of the Minerogenic forecast map of the Russian Federation and its continental shelf, 1 : 2 500 000, and of the Map of the distribution regularities and forecast for porphyry goldcopper, large-tonnage black-shale gold, and epithermal gold deposits of the Russian Federation, 1 : 2 500 000, has allowed the authors to substantiate distinguishing the new Aldan-Vilyui ore-placer gold-bearing province with a total area of 450 000 km2 in the basins of

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Dumakor-Dupey, Nelson K., and Sampurna Arya. "Machine Learning—A Review of Applications in Mineral Resource Estimation." Energies 14, no. 14 (2021): 4079. http://dx.doi.org/10.3390/en14144079.

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Mineral resource estimation involves the determination of the grade and tonnage of a mineral deposit based on its geological characteristics using various estimation methods. Conventional estimation methods, such as geometric and geostatistical techniques, remain the most widely used methods for resource estimation. However, recent advances in computer algorithms have allowed researchers to explore the potential of machine learning techniques in mineral resource estimation. This study presents a comprehensive review of papers that have employed machine learning to estimate mineral resources. T

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Glushankova, I., Alena Zhulanova, A. Arduanova, and A. Mikov. "Strategy for the Management of Pulp and Paper Industry’sWaste Containing Lignosulfonates." Safety in Technosphere 9, no. 3 (2021): 28–32. http://dx.doi.org/10.12737/1998-071x-2021-9-3-28-32.

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The pulp and paper industry’s multi-tonnage liquid waste is spent cooking liquor containing lignosulfonates, which disposal and processing remains one of the most complex environmental and technological problems, which should be solved. Lignosulfonates have unique colloidal-chemical properties, which determines their high resource potential. However, lignosulfonates’ composition instability often does not provide the properties and indicators set by the consumer. Changing market conditions require constant waste monitoring and modification, that prevents the widespread lignosulfonates use in i

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Ling, Huixuan, Tianju Zhao, Yangqianhui Zhang, and Meng Lei. "Engineering Vehicle Detection Based on Improved YOLOv6." Applied Sciences 14, no. 17 (2024): 8054. http://dx.doi.org/10.3390/app14178054.

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Engineering vehicles play a vital role in supporting construction projects. However, due to their substantial size, heavy tonnage, and significant blind spots while in motion, they present a potential threat to road maintenance, pedestrian safety, and the well-being of other vehicles. Hence, monitoring engineering vehicles holds considerable importance. This paper introduces an engineering vehicle detection model based on improved YOLOv6. First, a Swin Transformer is employed for feature extraction, capturing comprehensive image features to improve the detection capability of incomplete object

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Kogler, Christoph, and Peter Rauch. "Contingency Plans for the Wood Supply Chain Based on Bottleneck and Queuing Time Analyses of a Discrete Event Simulation." Forests 11, no. 4 (2020): 396. http://dx.doi.org/10.3390/f11040396.

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Wood supply chain performance suffers from risks intensified by more frequent and extreme natural calamities such as windstorms, bark beetle infestations, and ice-break treetops. In order to limit further damage and wood value loss after natural calamities, high volumes of salvage wood have to be rapidly transported out of the forest. In these cases, robust decision support and coordinated management strategies based on advanced contingency planning are needed. Consequently, this study introduces a contingency planning toolbox consisting of a discrete event simulation model setup for analyses

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Lee, Gang Nam, Jong Mu Kim, Kwang Hyo Jung, et al. "Environmental Life-Cycle Assessment of Eco-Friendly Alternative Ship Fuels (MGO, LNG, and Hydrogen) for 170 GT Nearshore Ferry." Journal of Marine Science and Engineering 10, no. 6 (2022): 755. http://dx.doi.org/10.3390/jmse10060755.

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With increasing concerns about environmental pollution, the shipping industry has been considering various fuels as alternative power sources. This paper presents a study of the holistic environmental impacts of eco-friendly alternative ship fuels of marine gas oil (MGO), liquefied natural gas (LNG), and hydrogen across each of their life cycles, from their production to the operation of the ship. The environmental impacts of the fuels were estimated by life-cycle assessment (LCA) analysis in the categories of well-to-tank, tank-to-wake, and well-to-wake phases. The LCA analysis was targeted f

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Wang, Tian Ying, Jian Zhang, and Jin Kun Liu. "Concept Design of a New Non-Ship-Shaped FPSO." Applied Mechanics and Materials 170-173 (May 2012): 2222–27. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.2222.

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In order to give full play to the advantages of FPSOs in the development of offshore oilfields, a new non-ship-shaped FPSO concept named IQFP is put forward through intensive study on various factors affecting the performance of FPSOs. Then, the optimized IQFP general design of a project case is presented based on the IQFP concept. The intact stability and damage stability of the IQFP are calculated and checked according to IMO rules. The hydrodynamic performance in frequency domain is simulated using the three-dimensional potential flow theory and compared with that of a ship-shaped FPSO with

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Nzeukou Nzeugang, A., R. Medjo Eko, N. Fagel, et al. "Characterization of clay deposits of Nanga-Eboko (central Cameroon): suitability for the production of building materials." Clay Minerals 48, no. 4 (2013): 655–62. http://dx.doi.org/10.1180/claymin.2013.048.4.18.

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AbstractClayey deposits of Nanga-Eboko (central Cameroon) were studied to assess their potential as building materials. Characterization was performed using XRD, FTIR, XRF, DTA/DTG and firing testing. Clays appear as discontinuous pockets with the same textural characteristics in three villages located on both sides of the Sanaga River. The average thickness of the exploitable layer is about 3m. The estimated tonnage ∼7–17×105 m3 can supply a brick industry of great importance. SiO2 (∼70%), Al2O3 (∼15%) and Fe2O3 (∼4%) are the predominant oxides of the natural clays. Quartz (∼55%), kaolinite (

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Pak, Sang-Joon, Inah Seo, Kyeong-Yong Lee, and Kiseong Hyeong. "Rare Earth Elements and Other Critical Metals in Deep Seabed Mineral Deposits: Composition and Implications for Resource Potential." Minerals 9, no. 1 (2018): 3. http://dx.doi.org/10.3390/min9010003.

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The critical metal contents of four types of seabed mineral resources, including a deep-sea sediment deposit, are evaluated as potential rare earth element (REE) resources. The deep-sea resources have relatively low total rare earth oxide (TREO) contents, a narrow range of TREO grades (0.049–0.185%), and show characteristics that are consistent with those of land-based ion adsorption REE deposits. The relative REO distributions of the deep-seabed resources are also consistent with those of ion adsorption REE deposits on land. REEs that are not part of a crystal lattice of host minerals within

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Ramūnas, Vaidas, Audrius Vaitkus, Alfredas Laurinavičius, Donatas Čygas, and Aurimas Šiukščius. "PREDICTION OF LIFESPAN OF RAILWAY BALLAST AGGREGATE ACCORDING TO MECHANICAL PROPERTIES OF IT." Baltic Journal of Road and Bridge Engineering 12, no. 3 (2017): 203–9. http://dx.doi.org/10.3846/bjrbe.2017.25.

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As the railway lifespan is the main criterion for selection of the aggregate for ballast and for planning the maintenance of the railroad, it is important to define the relationship between the particle load resistant characteristics and a lifetime of ballast in structure. Assessment of the quality of the ballast aggregate particles under dynamic and static loading reflect both, the toughness and hardness, and these are identified with the Los Angeles Abrasion and Micro-Deval Abrasion values. The model formerly developed by Canadian Pacific Railroads was adapted to predict possible loads expre

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Bień, Jurand D., and Beata Bień. "Sludge Thermal Utilization, and the Circular Economy." Civil and Environmental Engineering Reports 29, no. 4 (2019): 157–75. http://dx.doi.org/10.2478/ceer-2019-0052.

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Abstract In 2015, the European Commission has adopted an ambitious Circular Economy Action Plan (CEAP), which includes measures that would help stimulate Europe’s transition towards a circular economy. In general four key action areas have been defined: production, consumption, waste management and secondary raw materials. Actions will lead to the resource-efficient and environmentally friendly outcomes. Biological materials should be returned to the natural metabolic cycles after necessary pre-treatment while waste that can not be prevented or recycled is to be used for the energy recovery. S

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Asiedu, Berchie. "The performance of tuna processing fishery sector to sustainable fish trade and food security in Ghana." Journal of Energy and Natural Resource Management 2, no. 1 (2018): 8–14. http://dx.doi.org/10.26796/jenrm.v2i0.39.

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The paper presents an analysis of the performance of the tuna processing fishery sector of Ghana in order to derive the maximumbenefits for the Ghanaian economy. Interviews and document analysis were carried out with approved tuna processing firms,government institutions and statistical service of the European Union. Results showed that the Ghanaian tuna processing industryis mainly supplied with raw material coming from national vessels, both purse seiners and pole and line. This raw material is onlyenough to have the plants operating at 60% of their maximum capacity. There are a total of 6,

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Rajo Intan, Sri Widias Tuti Asnam, Saw Chun Lin, Hairi Haizri Che Amat, and Ahmad Affan Roslan. "Exploring Untapped Demand in Malaysia's Shipbuilding and Ship Repair Industry." Journal of Ship and Marine Structures 8, no. 1 (2025): 1–10. https://doi.org/10.37934/jsms.8.1.110.

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The global SBSR industry is projected to grow by over 195 billion U.S. dollars in size by 2030 whereby East Asia remains the dominant region in shipbuilding, with China, Japan, and South Korea leading the sector, while Malaysia ranks 16th in ship built by Million Gross Tonnage globally. According to the Container Port Performance Index (CPPI) 202, the Port of Tanjung Pelepas, Malaysia rose by 12 places to take the sixth position among the top 25 ports globally. By exploring the technological trends in SBSR, nine (9) key areas of innovations that led to sustainability in shipbuilding are highli

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Rauf Husain, Jamal, Hasbi Bakri, and Adnan Firdaus. "Estimation of Laterite Nickel Resources Using Ordinary Krigging Method at PT Vale Indonesia Nuha District East Luwu South Sulawesi Province." Journal of Geology and Exploration 2, no. 2 (2023): 48–52. http://dx.doi.org/10.58227/jge.v2i2.113.

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Resources have an economic value, form, quality, quantity rate, geological characteristics, and endurance to be economically extracted. Mineral resources are grouped according to their degree of geological certainty into the categories of assumed, indicated, and measured. The research aims to assess the potential resource potential of nickel laterite and the spread of the rate of mineralization of nickel in the research area using the geostatistical method of Ordinary Kriging. The research methodology is based on conducting statistical and geostatic analysis, starting with univariate statistic

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