Sustainability Commons^™

Detection Performance Of The Azimuthal Electromagnetic Wave Logging Instrument At Coal-Rock Interface In Horizontal Wells, Zhang Yi, Kang Zhengming, Feng Hong, Han Xue, Li Fei, Li Xin

Coal Geology & Exploration

The advance and accurate identification of coal-rock interfaces is one of the key technologies to realize intelligent mining, improve mining efficiency and reduce cost. Azimuthal electromagnetic wave logging has achieved good results in lithologic interface identification of petroleum logging, but the identification of coal-rock interface is seldom studied. For the purpose of studying the applicability and detection performance of azimuthal electromagnetic wave in the coalfield logging environment, the one-dimensional generalized reflection coefficient method is used to calculate the magnetic field component, and the fast Hankel transform is used to accelerate the integral calculation speed. What is more, the effects of …

Development Of A Methane Concentration Monitoring Sensor In Underground Boreholes Of Coal Mines, Cong Lin

Coal Geology & Exploration

At present, during underground drilling operations in coal mines, the methane concentration monitoring system can only reflect the total drainage volume of methane at the borehole, and cannot observe the effect of methane drainage of a certain section of the borehole. With the increase of the borehole depth for underground methane drainage, the effect of methane drainage changes greatly along the length of the borehole. There is a big difference in the effective extraction radius at different hole depths, leading to greater difficulty in arranging the boreholes for methane extraction, and increased uncertainty. In response to this problem, a methane …

Development And Test Analysis Of Borehole In-Situ Rock Mass Shear Measurement System, Zhang Youzhen, Liu Yanjie, Zhong Zicheng

Coal Geology & Exploration

The pre-drilled rock shear measurement system can measure the internal friction angle and cohesion of in-situ rock in mines. Compared with the traditional laboratory test and field tests, such method can keep the essential state of rock mass to the maximum extent, and obtain the test data conveniently and quickly. Firstly, the overall design idea of the system was elaborated, and the pre-drilled in-situ rock shear equipment was successfully developed and the data acquisition and storage software platform was built. Secondly, the test data processing method was developed, based on the working principle of the shearing instrument, and the specific …

Effects Of Different Tempering Temperatures On The Microstructure And Mechanical Properties Of A Low-Carbon High-Strength Steel, Lu Tian, Wen Guodong, Ma Xiaolin, Li Jun, Ju Pei, Wang Shiqing

Coal Geology & Exploration

The mechanical properties of low carbon high strength steel materials used in drilling equipment can be improved effectively by adjusting tempering temperatures of different heat treatments to obtain different material composition. The heat treatment and tempering temperatures were set at 610℃, 630℃ and 650 ℃ respectively, and the microstructure of this low-carbon high-strength steel was compared and analyzed by metallographic microscope and Scanning Electron Microscope(SEM). After tempering, the microhardness, tensile properties and impact energy of the structure were measured respectively by the microhardness tester, universal material testing machine and impact testing machine. The research results show that the performance of …

Removing Confederate Statues, Now What?: Sustainability And Reimagining Space, Tonya Thames Taylor

Sustainability Research & Practice Seminar Presentations

Professor tonya thames-taylor, History - Removing Confederate Statues, Now What?: Sustainability and Reimagining Space

The Search For Earth's Oldest Ice, John Higgins

Sustainability Seminar Series

Over the past eight hundred thousand years, glacial–interglacial cycles oscillated with a period of one hundred thousand years (‘100k world’1). Ice core and ocean sediment data have shown that atmospheric carbon dioxide, Antarctic temperature, deep ocean temperature, and global ice volume correlated strongly with each other in the 100k world2–6. Between about 2.8 and 1.2 million years ago, glacial cycles were smaller in magnitude and shorter in duration (‘40k world’7). Proxy data from deep-sea sediments suggest that the variability of atmospheric carbon dioxide in the 40k world was also lower than in the 100k world8–10, but we do not have …

The Role Of Place Attachment And Situated Sustainability Meaning-Making In Enhancing Student Civic-Mindedness: A Campus Farm Example, Brandon H. Sorge, Francesca A. Williamson, Grant A. Fore, Julia L. Angstmann

Scholarship and Professional Work - LAS

This research explores the role that place attachment and place meaning towards an urban farm play in predicting undergraduate students’ civic-mindedness, an important factor in sustainability and social change. In 2017 and 2018, three STEM courses at a private university in the Midwest incorporated a local urban farm as a physical and conceptual context for teaching course content and sustainability concepts. Each course included a four to six-week long place-based experiential learning (PBEL) module aimed at enhancing undergraduate STEM student learning outcomes, particularly place attachment, situated sustainability meaning-making (SSMM), and civic-mindedness. End-of-course place attachment, SSMM, and civic-mindedness survey data were …

Green Consumption Under Carbon-Orientated: Connotation, Transmission Mechanism And Countermeasures, Hongchun Zhou, Zuoting Shi

Bulletin of Chinese Academy of Sciences (Chinese Version)

As the proportion of consumption to GDP increases and its role in stimulating economic growth in China, the impact of residents' consumption has apparently become increased on resources, the environment and carbon dioxide emissions. Production is for consumption, and consumption in turn promotes production; consumption determines production and also guides the direction and development trend of production. Green consumption is not only a consumer's responsibility, but also higher requirements for producers:the entire process from raw material procurement, product production and transportation, product use, second product recycling, and final disposal must be low-carbon standards. It is very significant important to promote …

Perspective On Challenges In Accurately Estimating Remaining Carbon Budget For Climate Targets Of Paris Agreement, Tianjun Zhou, Xiaolong Chen

Bulletin of Chinese Academy of Sciences (Chinese Version)

In 2015, by signing up to the Paris Agreement on climate change, the United Nations Framework Convention on Climate Change (UNFCCC) parties pledged to keep global temperatures "well below" 2℃ above pre-industrial levels and to "pursue efforts to limit the temperature increase even further to 1.5℃". Limiting warming to 1.5℃/2℃ requires strictly limiting the total amount of carbon emissions between now and the end of the century. Global mean surface temperature has already witnessed a 1℃ more warming since the pre-industrial era and the cumulative anthropogenic CO2 emission has reached around 2 390 Gt CO2. An accurate estimation of the …

Alert To The Migration Of Air Pollution And Carbon Emission To Northwest China, Guiqian Tang, Yuting Liu, Wenkang Gao, Yinghong Wang, Tao Song, Mengtian Cheng, Yuesi Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Air pollutants have strong homology with greenhouse gases and are closely related to fossil fuel combustion. The high-intensity energy use in the eastern region of China has turned this region into a hot area of carbon dioxide emission and heavy air pollution in the past. Since the implementation of the Action Plan for the Prevention and Control of Air Pollution, the adjustment of industrial structure and the improvement of terminal treatment technology have been driving the succession of key species of air pollution and the spatio-temporal distribution of greenhouse gases in China. This paper analyzes the trend in major air …

Accident Analysis Of Mining Industry In The United States – A Retrospective Study For 36 Years, Elham Rahimi, Younes Shekarian, Naser Shekarian, Pedram Roghanchi

Journal of Sustainable Mining

A retrospective study on accident analysis of the United States mines for 36 years was achieved using statistical analysis on the MSHA's accident databases between 1983 and 2018. A regression model of generalized estimation equation (GEE) was used for unbalanced panel data that provided 95,812 observations for 19,924 mine-ID-year in aggregate, coal, metal, and non-metal mines. The contributions of various parameters, including mine type, injured body part, days lost, age, and experience on the rate of accidents and injuries were investigated across the commodity types. The results showed coal miners in the East region are at a higher risk of …

Planning For Resilience And Equity Through Accessible Community Technology: A Research Agenda, Christina Rosan, Megan Heckert

Sustainability Research & Practice Seminar Presentations

Professor Christina Rosan, Temple University Department of Geography and Urban Studies, and Professor Megan Heckert, Geography & Planning - Planning for Resilience and Equity through Accessible Community Technology: A Research Agenda

America's Urban Sustainability Agenda: Advancing A Climate Of Hope, H. James Quigley Jr.

Sustainability Seminar Series

The 20th century in the USA was characterized, among other things, by historic national movements: feminism and women's suffrage; the labor movement; civil rights; the peace movement; and the environment. Indeed, the highly pronounced trends today in urban areas of all sizes around the country of a commitment to green our architecture while expanding public housing, conserve energy, further develop renewable energy resources, green public and private transportation, recover recyclable materials from the waste stream, expand parks and open space, advance public transportation, democratize food security, make public education and health care more comprehensive, improve urban air quality, and more …

Invisible Trash: Emerging Contaminants In Streams And Rivers, Megan Fork

Sustainability Research & Practice Seminar Presentations

Professor Megan Fork, Biology - Invisible Trash: Emerging Contaminants in Streams and Rivers

What Tourists Want, A Sustainable Paradise, Catherine Linnes, Jerome Agrusa, Giulio Ronzoni, Joseph Lema

Hospitality Faculty Research

The increasing complexity of tourism and sustainability offers opportunities and challenges among diverse stakeholder perspectives. The need for sustainable and nature-based approaches exists throughout the growing body of literature from among a number of dimensions and measures. One of the overarching goals of the paper is to examine whether tourists will choose a destination or hotel that is actively working to improve the environment while examining how Hawaii’s tourism is nature-based as well as other measures of sustainability while enjoying a slice of paradise in the Hawaiian Islands. This study explores tourism sustainability concerns in Hawaii, such as the influence …

Sustainable Land System Transformations In Shifting Cultivation Landscapes, Dominic Martin

Sustainability Seminar Series

During my talk, I will give a broad introduction on shifting cultivation, associated sustainability challenges, and the case of north‐eastern Madagascar. Thereafter I will focus on land system transformations in shifting cultivation landscapes – both in Madagascar and elsewhere – showing that their drivers and consequences are highly diverse and context‐dependent. This is calling for a critical and contextualized appraisal of the continuation of, as well as the transition away from shifting cultivation when designing land system

Coping With Grief And Loneliness: The Healing Power Of Green Spaces, Jasmin Tahmaseb Mcconatha, Georgina Hanna, Katherine Ford, Carolyn Cusmano, Nicole Lyman

Sustainability Research & Practice Seminar Presentations

Professor Jasmin Tahmaseb McConatha, Psychology, with Georgina Hanna, Katherine Ford, Carolyn Cusmano, and Nicole Lyman - Coping with Grief and Loneliness: The Healing Power of Green Spaces

Sustainability Obligations And Liabilities For The Company Director, Richard Allen, Michael Tang, Jan Tan, Gautam Mukharya

Perspectives@SMU

SGX now requires its listees to issue a sustainability report. Why is this happening? And what do directors need to know?

2022 Gray Wolf Questions And Answers, United States Fish And Wildlife Service

United States Fish and Wildlife Service: Publications

2022 Gray Wolf Questions and Answers

What does the February 10, 2022, ruling mean?

How does this ruling affect wolves in the Northern Rocky Mountains?

When does the court decision to vacate the delisting rule go into effect?

What is the legal status of gray wolves as of this ruling?

Is the Service continuing its status review of wolves in the western United States?

Is emergency listing an option for the Northern Rocky Mountain population?

Are wolf hunts going to stop as a result of the court decision?

How does this ruling affect wolves in Yellowstone National Park?

Where can …

Witnessing Climate Change: What I Have Learned From My Expeditions To The Greenland Ice Sheet, Åsa Rennermalm

Sustainability Seminar Series

Greenland ice sheet and the Arctic region are experiencing some of the largest impacts of climate change on Earth. Since the 1990s, Greenland ice sheet surface melting has increased and is now one of the leading drivers of global sea‐level rise. For over a decade, my team and I have traveled to Greenland to study how climate change transforms the surface melting of the ice sheet. In this talk, I will share what we have learned from observing rivers on the ice sheet and tundra, and from extracting shallow ice cores high up on the ice sheet. Our ice cores …