Fungi In Flux | Designing Regenerative Materials And Products With Mycelium,
2023
Rhode Island School of Design
Fungi In Flux | Designing Regenerative Materials And Products With Mycelium, Arvind Bhallamudi
Masters Theses
As the world grapples with the escalating crisis of climate threats and environmental degradation, this research delves into the synergistic potential of design and biology, developing safe and sustainable materials for applications in prototyping, furniture and interior design. Harnessing the power of a unique organism - fungi, the study proposes an accessible, efficient, and resilient material resource system. It utilizes local waste streams and mycelium (the vegetative part of fungi) to grow functional structures. An experimental and small-scale protocol is modeled by testing bio-fabrication and bio-printing methods. The composites' performance qualities and characteristics are evaluated through mechanical testing and a …
Access In Ambiguity,
2023
Rhode Island School of Design
Access In Ambiguity, Moritz Lónyay
Masters Theses
The wealth of color present in nature has long been a major source of inspiration for works of art and design. Yet as more species become extinct due to habitat loss, climate change and unchecked hunting, will we face a less colorful, more monotonous future? How will this impact art and design and how could either be utilized as tools to counteract the loss of color? This thesis speculates upon such a future by the sixth wave of mass extinction and instigates a movement that celebrates color. Growing up in the Anthropocene, the first geological epoch in which human existence …
Nourishing The Future: Research On Building Sustainable Food Systems For A Resilient And Healthy Santa Clara,
2023
Santa Clara University
Nourishing The Future: Research On Building Sustainable Food Systems For A Resilient And Healthy Santa Clara, Ayla Flanagan
Silicon Valley Power Sustainable Futures Program
The city of Santa Clara faces challenges related to food insecurity and limited access to resources. The high cost of living in Silicon Valley contributes to financial strain for many residents, with a significant portion of households falling between the federal poverty line and the self-sufficiency index. The city currently relies on food pantries and limited free food resources to address food security issues. Santa Clara's Climate Action Plan includes goals to reduce food waste and rescue edible food as part of its efforts to promote sustainability through 2045. Implementing Senate Bill 1383, which aims to reduce organic waste and …
Exploring The Potential Of Pavegen’S Kinetic Energy Generating Floor For Sustainable Energy Solutions: A Proposal For Cal Poly Slo,
2023
California Polytechnic State University, San Luis Obispo
Exploring The Potential Of Pavegen’S Kinetic Energy Generating Floor For Sustainable Energy Solutions: A Proposal For Cal Poly Slo, Brandon J. Cuneo
Construction Management
This paper proposes the installation of Pavegen's kinetic energy generating floors at Cal Poly’s campus as a sustainable energy solution. Pavegen has developed a pioneering technology that converts footsteps into clean and renewable energy. The versatility of these floors is demonstrated through successful implementations in various settings, such as transportation hubs and public spaces, generating power from foot traffic. Collaborations with Schneider Electric, installation at Dupont Circle, and integration at Heathrow Airport showcase the potential for sustainable urban infrastructure. This paper outlines research conducted on Pavegen and similar solutions, including communication with company representatives and examining proposed installation locations at …
Attainable And Sustainable Home Building Solutions,
2023
California Polytechnic State University, San Luis Obispo
Attainable And Sustainable Home Building Solutions, Katrina Matthews
Construction Management
Sustainability has fortunately been a recent concern in the construction industry as climate change continues to impose potentially insurmountable threats to the global environment. Although many new methods have been adopted in efforts to lessen the adverse environmental effects of construction-related activities, as a society, we still have much room for growth as the built environment accounts for almost 50% of global emissions. Many changes and standards must be adopted to make these solutions efficiently beneficial. To set industry standards, we must start with the most basic form of construction- residential building. This report covers two attainable framing solutions for …
Policy Uncertainty Reduces Green Investment,
2023
Singapore Management University
Policy Uncertainty Reduces Green Investment, Mengyu Wang, Jeffrey Wurgler, Hong Zhang
Research Collection Lee Kong Chian School Of Business
Government subsidies are often used to stimulate environment-friendly investment. We find that Chinese firms reduce green investment as the uncertainty of subsidies rises. This effect is identified from weather-driven fluctuations in air pollution that lead to fluctuations in subsidy allocations: Firms in cities where weather-driven subsidy uncertainty is high engage in less green R&D investment, patent applications, and research staff. Industries that are heavy emitters and those focused on environmental technologies are more affected. The results suggest that policy uncertainty may originate not only from political and macroeconomic shocks but from behavioral mechanisms that link policy to salient recent conditions.
Table Of Contents,
2023
China Coal Technology and Engineering Group (CCTEG)
Application Of Pillar-Free Self-Formed Roadway Technology Under The Influence Of Reserse Faults: Strata Behavior Law And Surrounding Rock Control,
2023
School of Mechanics and Civil Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China; State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
Application Of Pillar-Free Self-Formed Roadway Technology Under The Influence Of Reserse Faults: Strata Behavior Law And Surrounding Rock Control, Zhang Wenjie, He Manchao, Wang Jiong, Ma Zimin, Cheng Manjiang, Niu Shaokun
Coal Geology & Exploration
To explore the influence of reverse fault activation on the stability of the application of the pillar-free self-formed roadway technology, this study systematically investigated the influencing scope and mechanisms of the reverse fault activation through theoretical analysis, numerical simulations, engineering practice, and field monitoring. The results show that, under the combined action of horizontal tectonic stress and dead weight stress, reverse faults have a significant influence on both the advanced abutment pressure of working faces and the pressure on the roadway roof after coal mining. The reverse fault was locally activated when the working face was close to the reverse …
Reliability Analysis And Compressibility Correction Of Mercury Intrusion Porosimetry Experiments For Low-Medium-Rank Coals,
2023
Institute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454003, China
Reliability Analysis And Compressibility Correction Of Mercury Intrusion Porosimetry Experiments For Low-Medium-Rank Coals, Song Dangyu, Zhao Yuwei, Li Yunbo, Yu Zhen
Coal Geology & Exploration
Low-medium-rank coals are soft and exhibit significant compressibility under high pressure. Therefore, it is debatable whether the pore structure of low-medium-rank coals can be reliably determined using mercury intrusion porosimetry (MIP) experiments. In this study, MIP experiments were conducted on four samples of low-medium-rank coals. By comparing the mercury injection curves of samples with different particle sizes, as well as the macroscopic and microscopic characteristics of the samples before and after mercury injection, this study established a correction method for the mercury injection volume at the high-pressure stage and investigated the reliability of MIP experiments in determining the pore structure …
Influencing Mechanisms Of Sc-Co2 Extraction On The Microstructures Of High-Rank Tectonic Coals,
2023
College of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Influencing Mechanisms Of Sc-Co2 Extraction On The Microstructures Of High-Rank Tectonic Coals, Zhang Xiaodong, Zhang Yu, Zhang Shuo, Li Guizhong, Li Xianzhong
Coal Geology & Exploration
This study aims to reveal the influencing patterns of supercritical CO2 (SC-CO2) on the microstructures of tectonic coals during the injection of CO2 into deep coal seams. The study conducted SC-CO2 extraction experiments on two types of high-rank coal samples with different damage degrees, namely the lean coal samples from the Daping coal mine in Shanxi Province and the anthracite samples from the Zhenxing coal mine in Guizhou Province. Accordingly, this study compared the parameters of pore structures and aromatic carbon stacking structures in the coal samples before and after the extraction experiments. Finally, this …
In-Situ Stress Calculation For Coal Reservoirs Based On Log Parameters: A Case Study Of The Southern Yanchuan Block,
2023
School of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, China; Coal Reservoir Laboratory of National Engineering Research Center of CBM Development & Utilization, Beijing 100083, China
In-Situ Stress Calculation For Coal Reservoirs Based On Log Parameters: A Case Study Of The Southern Yanchuan Block, Chang Chuang, Li Song, Tang Dazhen, Feng Peng
Coal Geology & Exploration
In-situ stress affects the permeability of coal reservoirs throughout the extraction of coalbed methane (CBM) and further influences the migration and output of CBM. To explore the effective methods for calculating the in-situ stress in coal seams, this study investigated the southern Yanchuan block at the eastern margin of the Ordos Basin. Based on the logs and well test data of the major coal seams in the study area, as well as the calculation results of parameters including the coal rock Poisson's ratio, modulus of elasticity, and reservoir pressure of coals, this study built a calculation model for the in-situ …
Differences In The Adsorption/Desorption Characteristics Of Coal Reservoirs With Different Coal Ranks And Their Effects On The Reservoir Productivity,
2023
College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Key Laboratory of Coal and Coal-measure Gas Geology, Taiyuan 030024, China
Differences In The Adsorption/Desorption Characteristics Of Coal Reservoirs With Different Coal Ranks And Their Effects On The Reservoir Productivity, Wang Qingqing, Meng Yanjun, Yan Taotao, Liu Zhenxing, Xu Guangbo, Li Kunjie, Liu Yanfei
Coal Geology & Exploration
Adsorption/desorption parameters are critical to the evaluation of the reserves and productivity potential of coalbed methane (CBM). Moreover, the law governing the desorption process is closely related to the productivity of CBM wells. This study aims to investigate the adsorption/desorption characteristics of coal reservoirs with different coal ranks and their effects on the productivity of the reservoirs. Based on the data of the coal macerals, coal quality, gas content, and isothermal adsorption experiments of 49 coal core samples from the Fanzhuang and Anze blocks in the southern Qinshui Basin and the Baode and Liulin blocks in the eastern Ordos Basin, …
Research On Dynamic Subsidence Characteristics Of Coal Mine Industrial Square Based On D-Insar Technology,
2023
School of Resources and Environment Engineering, Anhui University, Hefei 230601, China; Anhui Province Engineering Laboratory for Mine Ecological Remediation, Hefei 230601, China
Research On Dynamic Subsidence Characteristics Of Coal Mine Industrial Square Based On D-Insar Technology, Liu Hui, Chen Sidi, Zhu Xiaojun, Zhang Pengfei, Wang Jinzheng, Wang Qingwei, Si Guangya
Coal Geology & Exploration
In recent years, the subsidence has occurred continuously to the industrial squares of mining areas in the thick water-bearing loose layer in eastern China, resulting in various extent of damage to the surface buildings (structures), which has seriously affected the safe production and normal operation of coal mines. In order to study the subsidence of industrial square in a long series, the dynamic deformation information of the surface was obtained based on 17 scenes of Sentinel-1A image data of a coal mine in Eastern China. On this basis, the surface subsidence monitoring accuracy of D-InSAR technology was analyzed in combination …
Slip Resistance Effect Of Pile-Soil Interface Inclination Angle And Moisture Content On The Anti-Sliding Pile,
2023
School of Highway, Chang’an University, Xi’an 710064, China
Slip Resistance Effect Of Pile-Soil Interface Inclination Angle And Moisture Content On The Anti-Sliding Pile, Li Huaixin, Yan Changgen, Lin Bin, Shi Yuling
Coal Geology & Exploration
To study the slip resistance effect of pile-soil interface with different interface inclination angle and moisture content, the variability of damage modes and shear strengths of assemblies with variable inclination angles under the different conditions of interface inclination angles and water content were compared based on the triaxial unconsolidated undrained test at first. Then, the slip resistance effects of the pile-soil interface with different interface inclination angles and moisture contents were compared by numerical simulation, with consideration to the shear strength parameter of laboratory test. Meanwhile, the critical moisture content wmax was determined based on the plastic deformation theory. …
Technology Of Raising Upper Limit Of Mining By Grouting Reconstruction In Thick Water-Bearing Sand Layer And Its Application,
2023
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China
Technology Of Raising Upper Limit Of Mining By Grouting Reconstruction In Thick Water-Bearing Sand Layer And Its Application, Xing Maolin, Zheng Shitian, Shi Zhiyuan, Zhao Shaolei, Du Botao, Cui Siyuan
Coal Geology & Exploration
In order to set anti-collapse coal (rock) pillars in the thick loose water-bearing sand layer to raise the upper limit of mining, the grouting transformation technology of thick water-bearing sand layer was studied. Aiming at raising the upper limit of mining in the fourth aquifer in working face 1010-1 of Wugou Coal Mine in Huaibei, Anhui. The analysis is conducted through theoretical calculation, experiments on of grouting materials ratio, and in-situ grouting test, with a focus on the scope and horizon of transformation, the applicability of grouting materials, the mix ratio of grout at different depths, the arrangement of drilling …
Predicting The Water-Yield Properties Of K2 Limestones Based On Multivariate Lstm Neural Network: A Case Study Of The Poli Mining Area In Yangquan,
2023
State Key Laboratory for Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China
Predicting The Water-Yield Properties Of K2 Limestones Based On Multivariate Lstm Neural Network: A Case Study Of The Poli Mining Area In Yangquan, Shi Suzhen, Shi Guifei, Liu Zuiliang, Li Li, Yao Xuejun, Pei Jinbo, He Yazhou
Coal Geology & Exploration
The Taiyuan Formation K2 limestones are the main aquifer in the upper part of the No.15 coal seam in the Poli mining area, Yangquan City. Therefore, determining the water yield properties of K2 limestones is critical to the safe mining of coal seams in the upper and lower formations. To determine the exact distribution of areas with high water-yield properties of the K2 limestones, this study determined the accurate spatial distribution of K2 limestones using the conventional wave impedance inversion firstly. Then, nine optimal seismic attributes were selected using the Pearson correlation coefficient method and the …
A Method For Identifying Karst Collapse Columns Based On An Improved Residual Network,
2023
Smart City College, Beijing Union University, Beijing 100101, China
A Method For Identifying Karst Collapse Columns Based On An Improved Residual Network, Zhang Tian, Sun Lianying, Yang Yan, Tu Shuai, Wang Jinfeng
Coal Geology & Exploration
Coal mining areas have complex geological conditions, and it is critical to predict and identify karst collapse columns in these areas efficiently and accurately. Human-computer interaction is the most frequently employed to interpret karst collapse columns in traditional methods. However, with an increase in the exploration scale and the constant accumulation of generated data, the traditional manual interpretation of karst collapse columns cannot meet the demand for actual coal mining. To improve the identification accuracy of karst collapse columns, this study proposes a Collapse Column Identification Network (CINet) model, which takes the automatic recognition of karst collapse columns as binary …
3d Model Reconstruction Of Large-Diameter Rescue Well Based On Depth Camera,
2023
National Engineering Research Center of Highway Maintenance Equipment, Chang’an University, Xi’an 710064, China
3d Model Reconstruction Of Large-Diameter Rescue Well Based On Depth Camera, Gu Hairong, Luo Jia, Gao Ziyu, Yang Wenjuan, Han Shuai
Coal Geology & Exploration
Large-diameter borehole rescue is an effective emergency rescue method for mine disasters. Through the large-diameter rescue well that is constructed to the place where the trapped personnel is located, the trapped personnel can be lifted safely and reliably to the ground by a hoisting capsule. The structural parameters of a large-diameter rescue well and their changes have significant impact on the passing performance of the hoisting capsule. The real-time acquisition of the structural parameters of large-diameter rescue well is the basis of scientific operation and decision-making of large-diameter borehole rescue. In order to satisfy the requirements for monitoring of the …
Study On Factors Influencing The Self-Propelling Capacity Of Self-Propelled Water Jet Drill Bits,
2023
State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454000 , China; State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Henan Polytechnic University, Jiaozuo 454000, China
Study On Factors Influencing The Self-Propelling Capacity Of Self-Propelled Water Jet Drill Bits, Liu Yong, Dai Shuo, Wei Jianping, Zhang Hongtu, Yuan Yongwang, Guo Xinhui, Gao Yingjun
Coal Geology & Exploration
The structural characteristics of inner flow field in a pipeline are the key factors influencing the self-propelling capacity and descaling-unblocking capability of the self-propelled drill bit. To address the problem concerning the effect of the changes in the inner flow field of a pipeline under the joint action of multiple jets on the self-propelling force and the resistance to water backflow, the changes of inner flow field in the pipeline under different conditions were numerically analyzed based on FLUENT, and thus the influence law of the angle of rear nozzle, the rotational speed, the annular ratio and the system pressure …
Analysis On Water Loss Characteristics Of Roof Aquifer And Borehole Hydraulic Curtain Protection In Deep Coal Mining In Inner Mongolia‒Shaanxi Mining Area,
2023
CCTEG Xi’an Research Institute Co., Ltd., Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China
Analysis On Water Loss Characteristics Of Roof Aquifer And Borehole Hydraulic Curtain Protection In Deep Coal Mining In Inner Mongolia‒Shaanxi Mining Area, Zhao Chunhu, Wang Shidong, Ji Zhongkui, Zhu Kaipeng, Yang Jian, Xu Feng, Yu Bo
Coal Geology & Exploration
The geological and hydrogeological characteristics of the main mined coal seams in the deep Inner Mongolia‒Shaanxi Mining Area vary greatly from that of the shallow area. Herein, the relevant research results on the geological and hydrogeological characteristics, as well as the mining-induced water-flowing fracture, were analyzed systematically for the main mined coal seams in the deep mining areas, such as Hujierte, Taigemiao and Xinjie. On this basis, it is summarized that a typical indirect water loss (inrush) mode could be formed easily under the drive of coal mining, with the protection of key weak water barrier layer of Jurassic Anding …
