Influence Of Gas Components On The Determination Of Gas Pressure In Coal Seams Under In-Situ Pressure-Preserved Coring,
2023
State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Institute of Deep Earth Sciences and Green Energy, Shenzhen University, Shenzhen 518060, China
Influence Of Gas Components On The Determination Of Gas Pressure In Coal Seams Under In-Situ Pressure-Preserved Coring, Chu Peng, Shang Delei, Li Jianhua, Ma Shaoming, Zhu Guodong, Cui Pengfei
Coal Geology & Exploration
Determining the pressure and content of coal seam gas based on pressure-preserved coring is an effective method for quickly and accurately calculating gas parameters. Coal seam gas is a multi-component gas mixture dominated by methane. Given that coals show different adsorption capacities for different gases and that the components in the mixed gas exhibit different partial pressures, the proportions of gas components can influence the calculation results of the content and pressure of coal seam gas. To accurately determine the in-situ gas pressure in coal seams based on the pressure-preserved coring, this study investigated the influence of gas components on …
Exploring The Wetting Mechanism Of Surfactants For Coals Based On Molecular Simulations,
2023
Coal Mining and Utilization Research Institute of Pingdingshan Tian’an Coal Industry Co., Pingdingshan 467000, China
Exploring The Wetting Mechanism Of Surfactants For Coals Based On Molecular Simulations, Tong Yanjun, Yang Zundong, Song Jie, Li Yongcheng, Liu Yiting
Coal Geology & Exploration
With a gradual increase in the depth and mechanization degree of coal mining, secondary explosions of gas and coal dust have become increasingly severe. Chemical dust suppressants such as surfactants can reduce these explosions by effectively inhibiting the generation and diffusion of coal dust. To explore the inhibition mechanism of nonionic surfactants for hydrophobic coal dust, this study analyzed the basic physicochemical properties of typical hydrophobic coal dust at a depth of 1050 m using FT-IR, XRF, and XRD. This study built a molecular structure model of coal dust by combining test techniques such as EA, XPS, and 13C …
Remote Sensing And Gis Based Approach To Evaluate The Impact Of Stone Quarrying And Crushing Activities On Land Resources,
2023
School of Studies in Earth Science, Jiwaji University, Gwalior, India
Remote Sensing And Gis Based Approach To Evaluate The Impact Of Stone Quarrying And Crushing Activities On Land Resources, R. S. Chaurasia, S. N. Mohapatra
Journal of Sustainable Mining
The land is one of the most treasures to support life, like food, fibre, medicine, and minerals, etc. Stone quarrying is one of the key elements which supports socio-economic development and industrial expansion. RS and GIS play an important role in environmental assessment to monitor the stone quarries and related activities for time to time. The present study was carried out to evaluate the impact of stone quarrying and crushing activities (SQCA) on land resources. Therefore, matrix change analysis of 2021, 2015, 2008 and 2003 were used for change detection. High-resolution Google Earth Pro images were used for the assessment …
Research On Performance Evaluation System Of Shipping Enterprises Under "Double Carbon" Strategy,
2023
World Maritime University
Research On Performance Evaluation System Of Shipping Enterprises Under "Double Carbon" Strategy, Xiaoyu Xue
World Maritime University Dissertations
No abstract provided.
Transport Carbon Emission Reduction In A Seaport : Dry Port System,
2023
World Maritime University
Transport Carbon Emission Reduction In A Seaport : Dry Port System, Jianshi Kang
World Maritime University Dissertations
No abstract provided.
Predictive Model Of Seismic Vibrations’ Peak Value Induced By Multi-Face Blasting,
2023
KGHM CUPRUM Ltd. – Research & Development Centre
Predictive Model Of Seismic Vibrations’ Peak Value Induced By Multi-Face Blasting, Krzysztof Fuławka, Lech Stolecki, Piotr Mertuszka, Marcin Szumny, Arkadiusz Anderko
Journal of Sustainable Mining
The seismicity level induced by blasting in the Polish copper mines is very important inlight of the efficiency of active rockburst prevention and safe conduct of blasting operations in the vicinity of the mining infrastructure such as shafts, workings, or function chambers (e.g., workshops, storages, etc.). Knowledge of the seismic vibrations’ peak value might be the basis for designing blasting works in a way that ensures desired seismic effect. However, current experiences show that Peak Particle Velocity prediction models developed so far do not apply to multi-face blasting, where there are many vibrations’ sources at the same time dotted across …
Background Situation, Strategic Suggestions And Future Prospects Of Construction Of New Energy System,
2023
Antai College of Economics and Management, Shanghai Jiao Tong University, Shanghai 200030, China
College of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
NARI Group Corporation/State Grid Electric Power Research Institute, Nanjing 211106, China
Background Situation, Strategic Suggestions And Future Prospects Of Construction Of New Energy System, Ye Zhu, Shiming Xu, Xiaohua Ding, Haitao Yin, Donglan Zha, Hao Ding, Aimin Zhou, Shun Wan
Bulletin of Chinese Academy of Sciences (Chinese Version)
“We will speed up the planning and development of a system for new energy sources” is a new formulation and new judgment of the 20th National Congress of the Communist Party of China, which points out a new development direction for China's energy industry and has important strategic significance. Standing at a new starting point, how to accurately understand the core essence of the new energy system, what key construction tasks the new energy system contains, what key points standing at a new starting point, following issues, i.e., how to accurately understand the core essence of the new energy system, …
Pathways For Medium- And Long-Term Sustainable Supply Of Typical Strategic Metals In China In Context Of Carbon Neutrality,
2023
School of Environment, Tsinghua University, Beijing 100084, China
Pathways For Medium- And Long-Term Sustainable Supply Of Typical Strategic Metals In China In Context Of Carbon Neutrality, Xianlai Zeng, Jinhui Li, Yong Geng, Han Hao, Weirun Huang, Xin Sun
Bulletin of Chinese Academy of Sciences (Chinese Version)
Mineral resources are fundamental materials for economic and social development. Irrational exploration, utilization and consumption not only undermine the security of industrial chain and supply chain, but also seriously damage ecosystem. A new round of technological revolution and carbon neutral strategy is reshaping the global innovation distribution and technical structure. As China's economic and social development advances into post-epidemic stage, the supply and demand structure of strategic metal resources has experienced profound changes. The security challenges extend from traditional security of access to resource to the entire chains, including extraction, processing, use and recycling. China's solid waste generation has grown …
Research On China’S Marine Protected Areas Policy Based On Kunming-Montreal Global Biodiversity Framework 2030 Targets,
2023
Key Laboratory of Carrying Capacity Assessment for Resource and Environment, Chinese Academy of Natural Resources Economics, Ministry of Natural Resources, Beijing 100035, China
Research On China’S Marine Protected Areas Policy Based On Kunming-Montreal Global Biodiversity Framework 2030 Targets, Ke Duan, Xiulin Wang
Bulletin of Chinese Academy of Sciences (Chinese Version)
The Kunming-Montreal Global Biodiversity Framework adopted by the United Nations Convention on Biological Diversity (CBD) at the Conference of Parties (COP15) has set a series of targets, including protecting at least 30% of the oceans by 2030 worldwide. In China, how to build a marine ecological civilization in synergy with the targets has become an important issue. This study analyzes the necessity of accelerating the construction of marine protected areas in China from the perspectives of adapting to international trends, fulfilling the responsibilities of international conventions, safeguarding maritime rights and interests, and implementing the maritime power and strategy. The feasibility …
Managing The Rock Mass Destruction Under The Explosion,
2023
Dnipro University of Technology, Department of Transport Systems and Energy-Mechanical Complexes, Yavornytskoho Ave 19, UA-49005 Dnipro, Ukraine
Managing The Rock Mass Destruction Under The Explosion, Maksym Kononenko, Oleh Khomenko, Ivan Sadovenko, Valeriy Sobolev, Yuliya Pazynich, Adam Smoliński
Journal of Sustainable Mining
Using the theory of elasticity and the main provisions of the quasi-static-wave hypothesis of the mechanism of the destruction of a solid medium under the action of an explosion, analytical modelling of the parameters of the formation of crumpling zones and crushing of the rock mass around the charging cavity during its explosive loading was carried out. Analytical models of the radii of the crumpling, intensive fragmentation and fracturing zones formed around the charging cavity in the rock mass during its explosive loading, taking into account the pressure of the explosion products, the limit of tensile-compressive strength of the rocks, …
Crop Monitoring And Nutrient Prediction Using Satellite Imagery And Soil Data,
2023
Case Western Reserve University
Crop Monitoring And Nutrient Prediction Using Satellite Imagery And Soil Data, Olatunde D. Akanbi, Brian Gonzalez Hernandez, Erika I. Barcelos, Arafath Nihar, Laura S. Bruckman, Yinghui Wu, Jeffrey Yarus, Roger H. French
Student Scholarship
No abstract provided.
Optimizing Edge-Of-Field Water Quality Monitoring Methods To Determine The Effects Of Best Management Practices On Nutrient And Sediment Runoff,
2023
Mississippi State University
Optimizing Edge-Of-Field Water Quality Monitoring Methods To Determine The Effects Of Best Management Practices On Nutrient And Sediment Runoff, Mark Hill
Theses and Dissertations
This study investigates the impact on water quality of combined agricultural best management practices cover crop and minimum tillage, alongside an examination of techniques used to collect those samples. Edge-of-field (EOF) water quality samples were collected from 11 working farms during a two-year paired field experiment. Results showed significant reductions in nutrient concentrations, increased discharge, and mixed findings regarding nutrient mass transport post-treatment. A suite of EOF collection techniques were compared using in-situ automated water sampling systems sampling the same runoff events. Sampling protocols influenced nutrient concentrations in composite samples, but unexpected variance in velocity sensors affected measured discharge, making …
Application Geological Strength Index (Gsi) Quantification Method On The Characterization Of Carbonate Rock Mass,
2023
Universitas Pembangunan Nasional “Veteran” Yogyakarta, Mining Engineering Department, Indonesia,
Application Geological Strength Index (Gsi) Quantification Method On The Characterization Of Carbonate Rock Mass, Singgih Saptono, Danu Mirza Rezky
Journal of Sustainable Mining
Determining GSI as a representation of the presence of rock mass in slope analysis continues to develop. The development of the quantitative GSI method was carried out because the basic (qualitative) GSI values were deemed too subjective so the results from the use of the quantitative GSIwere expected to be more objective and accurate. The method used is to combine 3 GSI quantitative methods to find GSI based on surface conditions and joint structure. The results showed that the Quantitative GSI value was smaller than the GSI predictive value (qualitative). The GSI approach with RQD and UCS parameters is also …
Comparative Life Cycle Assessment Of Small Vertical-Axis Wind Turbines And Natural Gas Facility At An Urban University,
2023
Duquesne University
Comparative Life Cycle Assessment Of Small Vertical-Axis Wind Turbines And Natural Gas Facility At An Urban University, Mary Kate Ranii
Electronic Theses and Dissertations
Fossil fuels generate the majority of the electricity in the United States and generate pollutants that negatively affect public and environmental health. Renewable energy projects serve as an opportunity for low-pollution and low-carbon electricity; small-scale projects, such as vertical axis wind turbines (VAWTs), provide opportunities for generation in urban areas close to consumers. Researchers collected wind speed and directional data from a potential turbine installation site at Duquesne University to better demonstrate the potential benefits in an urban university location. The data was used in a life cycle assessment framework and a social review to better understand the value of …
Design Of Stormwater Bmps For Surface And Groundwater Protection Based On Site-Scale Soil Properties: Phase I,
2023
University of Central Florida
Design Of Stormwater Bmps For Surface And Groundwater Protection Based On Site-Scale Soil Properties: Phase I, Kelly Kibler, Lisa Chambers, Melanie Beazley
Florida DOT
Much of Earth’s nutrient cycling takes place in soils. Characteristics of soils control physical, chemical, and biological processes that determine rates of nutrient fluxes, storage, or transformation. As remediation of excess nutrients in stormwater runoff is one function of stormwater Best Management Practices (BMPs), the soil profile constitutes one of the most important factors of BMP design. Variation observed in BMP effectiveness (e.g., why one BMP design works effectively in one place and not another) can often be explained by variations in the soil profile, either through direct means or by a soil’s influence on hydraulics of stormwater flow through …
Do-It-Together: Informal Transformative Sustainability Education,
2023
University of Denver
Do-It-Together: Informal Transformative Sustainability Education, Derek Brannon
Electronic Theses and Dissertations
The Climate Crisis is an urgent and inescapable reality students are thrust into. Learners must be prepared adequately for their futures, not only for their sakes but also because collective and transformative change is required. Transformative sustainability education provides one pathway to this transformation and focuses on radically altering students’ perceptions about the world and their agency in effecting change on ecological issues. The field of transformative sustainability education is emergent and thus is still fragmented, leaving gaps in the literature. Little research has been conducted on how informal and nonformal university spaces can be used to create transformative experiences …
Bibliometric Analysis Of Sustainability In Gastronomy Research,
2023
Kocaeli University
Bibliometric Analysis Of Sustainability In Gastronomy Research, Nihan Akdemir, Bilsen Bilgili
University of South Florida (USF) M3 Publishing
Sustainability can be called the ability to be permanent. The economic, social and ecological dimensions of sustainability are important in terms of gastronomy. The rapid development of gastronomy in recent years has led many studies in literature to discuss gastronomy from different perspectives. The aim of this study is to reveal the development of national and international research on sustainability in gastronomy over the years with bibliometric analysis. In this context, Web of Science (WOS) and ULAKBIM TR-Dizin databases were examined in the analysis of the data until February 2023. For this purpose, articles were selected from the relevant sources …
Towards Sustainable Water Management: Soil Analysis, Modeling, And Sensor Implementation On A Micro-Basin Chile's Los Lagos Region,
2023
University of New Mexico
Towards Sustainable Water Management: Soil Analysis, Modeling, And Sensor Implementation On A Micro-Basin Chile's Los Lagos Region, Tammy N. Huynh
Civil Engineering ETDs
The Los Lagos region of Chile is experiencing ecological and socioeconomic challenges because of climate change. Despite efforts by the agricultural sector to understand and manage water resources, the lack of basic water quantification data affects their ability to effectively plan and implement water management strategies. This research aims to address this critical issue through three key objectives. First, characterize soil properties related to texture and structure in a micro-basin of the Los Lagos region. Secondly, it aims to investigate the hydrologic budget of the micro-basin with an emphasis on soil moisture using the Soil Moisture Routing model (SMR). Lastly, …
Integrating Sensor Development, Risk Assessment, And Community Engagement To Support Environmental Justice In The Rural Community Of El Tiple, Colombia,
2023
Clemson University
Integrating Sensor Development, Risk Assessment, And Community Engagement To Support Environmental Justice In The Rural Community Of El Tiple, Colombia, David Bahamon Pinzon
All Dissertations
In Colombia, ethnic communities have traditionally been responsible stewards of natural resources. They recognize the importance of these resources for their livelihood, as well as their ancestral and cultural heritage. El Tiple, a rural Afro-Colombian community, has been affected by the incursion of private corporations that promoted the expansion of sugarcane monocrops in their territory. Since the introduction of the monoculture industry, local freshwater sources have been depleted due to intensive water use for irrigation of the sugarcane crops. Additionally, the intensive usage of agrochemicals has been linked with loss of native flora, damages to family farms, and pollution of …
Characterization Of Mechanically Recycled Polylactic Acid (Pla) Filament For 3d-Printing By Evaluating Mechanical, Thermal, And Chemical Properties And Process Performance,
2023
Clemson University
Characterization Of Mechanically Recycled Polylactic Acid (Pla) Filament For 3d-Printing By Evaluating Mechanical, Thermal, And Chemical Properties And Process Performance, Mahsa Shabani Samghabady
All Theses
Polylactic acid (PLA) is a biopolymer made from renewable resources such as sugar and corn. PLA filament is a popular material used in Fused Deposition Modeling (FDM) 3D-printing. While this material has many advantages, all the failed parts, support structures, rafts, nozzle tests, and the many prototype iterations during the 3D-printing process contribute to the plastic pollution and release of greenhouse gases. Although PLA is biodegradable, it can take years to degrade in landfills. Instead of throwing away PLA waste and buying new filaments, PLA can be recycled. Amongst the different recycling technologies, mechanical recycling is the most environmentally friendly. …
