Sustainability Commons^™

Risk Assessment Of Floor Water Inrush By Weighted Rank Sum Ratio Based On Combination Weighting, Yao Hui, Yin Shangxian, Xu Wei, Zhang Runqi, Jiang Zhiting

Coal Geology & Exploration

Deep mining of the coal seam causes frequent water hazards in the coal mine floor. As the disadvantages of traditional water inrush risk assessment methods, such as single evaluation index and deviation of the evaluation results from reality are gradually revealed, many new assessment methods are emerging. In this paper, Donghuantuo Coal Mine, a North China type coalfield, in Hebei province is taken as the research object. The evaluation factor sets including aquifer capacity, aquifuge capacity, geological conditions and coal seam conditions are selected, and with ten evaluation factors being considered, a floor water inrush risk evaluation index system applicable …

Cross Wavelet Analysis Between Layered Monitoring Data Of Stratum Deformation And Groundwater Level Regime, Kong Xiangru

Coal Geology & Exploration

Land subsidence is usually caused by over-exploitation of groundwater, and its occurrence and development have a certain lag relative to the change in groundwater level. Obtaining the accurate lag time of land subsidence has always been an important topic in land subsidence research. Based on the layered monitoring data of the long-time series of land subsidence and groundwater level regime from 2008 to 2018 by Land Subsidence Monitoring Station in Pinggezhuang, Beijing, the lag effect between stratum deformation in layers at different depths and groundwater level regime is analyzed in this paper by adopting methods of Mann Kendall trend test, …

Sequence-Paleogeography And Coal Accumulation Of The Paleogene Hunchun Formation In The Hunchun Basin, Hou Haihai, Li Qiangqiang, Shao Longyi, Fan Xuejie, Liang Guodong, Li Yanan

Coal Geology & Exploration

The Hunchun Basin is an important coal-bearing region in Jilin Province, northeastern China. The analysis of the sedimentary paleogeography of the Paleogene Hunchun Formation and coal-accumulation law in the sequence framework provides a theoretical basis for future coal and coalbed methane exploration. The lithofacies, sedimentary systems, sequence paleogeography, and coal accumulation characteristics were analyzed based on regional geology, drilling cores and well logging data. The results show five rock types, including gravel, sandstone, siltstone, mudstone, and combustible organic rock, and twelve lithofacies. The Hunchun Formation was divided into three third-order sequences by three sequence interfaces, including the regional unconformity surface, …

Recognition Of Land Use On Open-Pit Coal Mining Area Based On Deeplabv3+ And Gf-2 High-Resolution Images, Zhang Chengye, Li Feiyue, Li Jun, Xing Jianghe, Yang Jinzhong, Guo Junting, Du Shouhang

Coal Geology & Exploration

A highly efficient means is provided by remote sensing and deep learning to keep tracking of land use in open-pit coal mining area. Based on the high–resolution images from the domestic GF-2 satellite, a DeepLabv3+ model was utilized to achieve recognition of land use on open-pit coal mining area. In addition, a comparison was made among Deeplabv3+, U-Net, FCN, Random Forest, Support Vector Machine, and Maximum Likelihood Method. Firstly, samples data from high-resolution images were produced and sensitivity tests were conducted to determine the optimal cutting size and mode of the sample. Then, the deep neural network model (DeepLabv3+) was …

Transport Mechanism Of Ammonia Nitrogen In The Simulated Gob Area Packed With Coal Gangue, Li Yusong, Lu Yucan, Cao Qiong, Zhao Li, Zhu Kaipeng, Zhang Qing, Yu Hongfei, Zhang Lei

Coal Geology & Exploration

In many coal mining areas in western China, waste water produced during coal mining is often dominant in mine water, resulting in high ammonia nitrogen content. The pretreatment of mine water by filling gangue in coal mine gob areas has become an important measure for the resource utilization of mine water and gangue. The research took the coal gangue from Baode Coal Mine of Shenhua Shendong Coal Group Corporation as the filling medium and the ammonia nitrogen in mine water as the research object. Based on CXTFIT2.1, column simulation experiments were carried out to study the migration mechanism of ammonia …

Research On Interpolation Error Analysis Of Geological Modeling Of Intelligent Working Face, An Lin, Han Baoshan, Li Peng, Dai Zhenhua, Wang Xinmiao

Coal Geology & Exploration

Working face modeling generally obtains the actual distribution of the working face through detection methods such as three-dimensional seismic, tunnel and borehole surveys, and then it establishes the corresponding model using interpolation algorithms. During the modeling process, sampling data are the foundation and interpolation is the necessary way to realize the working face model. The interpolation algorithm and the amount of sampled data affect the accuracy of the face model to varying degrees. Quantitative research on the factors affecting the accuracy of the face model will provide important reference value for the optimization of the interpolation algorithm and the amount …

Influence Of Admixtures On The Performance Of Soundless Chemical Demolition Agents And Implications For Their Utilization, Nattamon Maneenoi, Raphael Bissen, Sakonvan Chawchai

Journal of Sustainable Mining

Soundless Chemical Demolition Agents (SCDAs) are an environmentally friendly and safer alternative to traditional rock fragmentation methods. Admixtures are used to change the rheological properties and performance of SCDAs. This study aimed to investigate the effect of various concentrations of chemical accelerators (chloride salts) and viscosity enhancing agents (VEAs: Xanthan gum, Guar gum, and Gellan gum) on the fracture onset compared to an unmodified SCDA (BRISTAR 100®). All experiments were conducted on Portland Type 1 (OPC 1) cement blocks. The flowability of the mixtures was determined by mini-slump tests. Results show that 4wt% MgCl2 and 3wt% CaCl2 have accelerated the …

2021-2022 Sustainability Committee Annual Report To The President, Saint Mary's College Of California

Sustainability Report

No abstract provided.

4d Gas Geological Research On Coal Seam With Gas Hazard Potential In Mining Panel, Hongqing Cui, Xin He, Zehua Wang

Journal of Sustainable Mining

According to regulations of the mining industry in China, it is necessary to carry out gas hazard prevention projects in advance when mining coal seams with gas hazard potential, and gas geological research should be taken as the basic work for optimal design and effective construction of gas hazard prevention projects. Research on coal seam with gas hazard potential have shown that anomalous geological area could be the gas hazard potential area as well, where superimposed tectonic and mining stress field usually results in tectonically disturbed coal and pressured gas. A 4D gas geological research method is used to find …

Engaging Hard-To-Reach Audiences Through Internal Interdisciplinary And External Diverse Collaborations, Erin M. Garrett, Ashley J. Belle

Journal of Extension

Through a combination of internal and external collaborations, consumer-based energy education designed for hard-to-reach audiences was successfully delivered statewide by an interdisciplinary Extension team. Program participants representing rural residents, senior citizens, and low-income audiences demonstrated improvements in knowledge and increased intention to change their home electricity usage behaviors. This outreach work can serve as a model for other Extension services to combine interdisciplinary teams with community partnerships to reach underserved audiences statewide.

Session 4: Plunging Into Deep Water: An Immersion In Fintech, Defi (Decentralized Finance), & Web3, Joseph M. Vincent

SITIE Symposiums

This panel featured entrepreneurs providing their expert insight into the background, workings, and expected developments of the FinTech industry. Moderated by Adjunct Professor of Law Joseph M. Vincent, the panel features Ron Oliveira, Kory Hoang, and Jonathan Blanco.

The panelists provided insight on topics regarding: (1) the fundamental changes in financial services since the advent of FinTech; (2) background on the Stablecoin industry including a background of what Stablecoin is, and why it has been under recent scrutiny; and (3) the NFT market and the direction the NFT space is heading. In a Q&A session, the panelists also offered their …

Session 3: Deep Innovation Dive In Health Equity: Truveta (“Saving Lives With Data”), Steve Tapia, Dave Heiner

SITIE Symposiums

This session is a “deep dive” into health equity and research via a moderated discussion with Truveta, a new data partnership company poised for research breakthroughs in the healthcare sector. In it, Dave Heiner, General Counsel and Chief Policy Officer for Truveta, discusses the company’s healthcare-centered mission and the key role that data plays in the healthcare field.

Session 2: Diversity Perspectives: In-House Counsel, Debbie Akhbari

SITIE Symposiums

This expert panel addressed diversity perspectives in the legal field. Moderated by Debbie Akhbari, six panelists shared their stories. The panelists were Leticia Hernández, Bernadette Lopez, Elida Moran, Catherine Romero, Rachel Seals, and Katina Thornock. Each panelist's stories have been broken into its own section in the summary of proceedings.

Many diverse candidates have incorrect assumptions made about them, resulting in doors being closed by those in positions of power. This panel shared their personal stories and encouraged students and newer attorneys to keep “knocking on those doors” and for those in positions of power to open those doors. Through …

Session 1: Innovation In Legal Services, Steven W. Bender, Michael Cherry, Matthew Spencer

SITIE Symposiums

This panel featured two “disrupters” who detailed their experiences innovating in the legal services space. The first panelist spoke about data-driven regulatory reform and the other spoke as an entrepreneur whose product introduces artificial intelligence (AI) into the legal recruiting process. Two additional panelists provided commentary regarding the second panelist’s presentation.

The panel provided insight on the topics of: (1) the legal regulatory process at large; (2) how a data-driven and feedback-oriented sandbox provides an alternative regulatory process; (3) the legal hiring and recruiting process and (4) how AI allows law firms to consider alternative hiring metrics when assessing candidates …

Introduction To The 5th Annual Innovation And Technology Law Conference, Annette Clark

SITIE Symposiums

Seattle University School of Law’s then dean, now Dean Emerita, Annette Clark, opens the 5^th annual Innovation and Technology Law Conference, co-sponsored by the Seattle Journal of Technology, Environmental, and Innovation Law (SJTEIL) at Seattle University School of Law. Annette Clark has been involved with the planning and organization of the Innovation and Technology Law Conference since the conference’s inception. The theme of the 5^th annual 2022 conference is “deep innovation dives.”

Annette Clark explains that “This conference is part of our continuing efforts at Seattle [University] Law to expand educational opportunities for our students and community in …

5th Annual Innovation And Technology Law Conference: Deep Innovation Dives, Steven W. Bender

SITIE Symposiums

Steven W. Bender, Seattle University School of Law Professor and organizer of the SITIE Symposium series, details the history of the SITIE symposiums and the 2022 proceedings. He discusses how this year's symposium builds on themes and issues raised in previous symposiums and looks ahead to the 2023 SITIE symposium.

Tracing Geochemical Sources And Health Risk Assessment Of Uranium In Groundwater Of Arid Zone Of India, P. Pandit, Atul Saini, Sabarathinam Chidambaram, Vinod Kumar, Banjarani Panda, A. L. Ramanathan, Netrananda Sahu, A. K. Singh, Rohit Mehra

Nebraska Water Center: Faculty Publications

Water quality degradation and metal contamination in groundwater are serious concerns in an arid region with scanty water resources. This study aimed at evaluating the source of uranium (U) and potential health risk assessment in groundwater of the arid region of western Rajasthan and northern Gujarat. The probable source of vanadium (V) and fluorine (F) was also identified. U and trace metal concentration, along with physicochemical characteristics were determined for 265 groundwater samples collected from groundwater of duricrusts and palaeochannels of western Rajasthan and northern Gujarat. The U concentration ranged between 0.6 and 260 μg L⁻¹ with a mean …

Fisheries Science Update - Australian Herring - June 2022, Department Of Primary Industries And Regional Development, Western Australia

Fisheries Science Updates

The latest weight of evidence stock assessment for Australian herring indicates that management arrangements introduced in 2015, combined with suitable environmental conditions, have led to the recovery of the resource.

The Department of Primary Industries and Regional Development (DPIRD) tracks our aquatic resources by undertaking weight of evidence stock assessments every three to five years.

DPIRD has undertaken four contemporary weight of evidence stock assessments of Australian herring since 2000.

The 2000 assessment (22 years ago) indicated the catch was sustainable. However, by 2013 the Australian herring stock status had become high risk and ‘unacceptable’, and new measures were introduced. …

Solid Thermal Storage As An Energy Storage Device In Insulated Solar Electric Cookers: Thermal Modeling And Experiment, Michael Antonio Fernandez

Physics

The use of solid thermal storage (STS) as an energy storage device in insulated solar electric cookers (ISEC) was explored using a thermal simulation before retrofitting an existing cooker without energy storage and testing it under several conditions. STS sizing, material selection, and geometry were examined from both theoretical and practical perspectives and re-examined following experimental results. Characterization of the system’s thermal interfaces and methods to improve their thermal conductivities were investigated resulting in several performance enhancements to the system.

Developing A Miniature Smart Boat For Marine Research, Michael Isaac Eirinberg

Computer Engineering

This project examines the development of a smart boat which could serve as a possible marine research apparatus. The smart boat consists of a miniature vessel containing a low-cost microcontroller to live stream a camera feed, GPS telemetry, and compass data through its own WiFi access point. The smart boat also has the potential for autonomous navigation. My project captivated the interest of several members of California Polytechnic State University, San Luis Obispo’s (Cal Poly SLO) Marine Science Department faculty, who proposed a variety of fascinating and valuable smart boat applications.