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Red Fox, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity factsheets

This factsheet provides information on the red fox in Western Australia (WA).

The red fox (Vulpes vulpes) is a native of the northern hemisphere where it occurs throughout most of Europe, Asia, North America, and the northern coast of Africa. The red fox was first introduced to Australia (Victoria) from Britain as early as 1845 for hunting with foxhounds. Having become successfully established in Victoria by about 1870, it colonised most of mainland Australia over the next 70 years. Foxes are not found in the most northern regions of Australia, including northwest Kimberley.

In WA, the fox is a declared …

Assessing Millennial, Centennial, And Decadal Sea-Level Changes In China: Is It Unprecedented Now?, Yucheng Lin

Sustainability Seminar Series

The coastline of China, home to over 300 million residents, is among the most densely populated regions in the world. Understanding the mechanisms driving sea-level evolution from the geological past to the modern era is essential for evaluating sea-level variability, quantifying the potential human impact on sea-level changes, and informing future coastal infrastructure planning. In this talk, I will discuss the use of geological records to reconstruct the drivers of past sea-level changes. These reconstructions will be compared with modern instrumental records to determine whether recent sea-level changes fall within the bounds of natural variability or are indeed unprecedented.

Satellite Observations Indicate That Chia Uses Less Water Than Other Crops In Warm Climates, Brian Kirsch, Joshua B. Fisher, Thomas Piechota, Mohammad Hassani, Diego C. Suardiaz, Radhika Puri, Joseph Cahill, Hagop S. Atamian

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Many parts of the world face severe and prolonged drought conditions, stressing the sustainability of water resources and agriculture. Transitioning to water-efficient crops is one strategy that can help adapt to water scarcity. An emerging drought-tolerant crop of interest is chia (Salvia hispanica). Yet, no study has compared its large-scale water use dynamics to those of widely established crops across the globe. Here, we use satellite data over multiple years to assess the water use efficiency of chia, alfalfa, corn, and soybean globally. Results show that chia consumed 13-38% less water than alfalfa, corn, and soy and assimilated …

Impacts Of Climate Change In The United States, Nathan T. Thompson

Journal of Nonprofit Innovation

Climate change, a shift in long-term climate patterns primarily driven by anthropogenic factors, poses a super wicked problem impacting every sector and region globally, including the United States. This paper explores the scientific basis of climate change, its contributing factors, and the myriad consequences on terrestrial and aquatic systems, as well as mental health. Notably, the emission of greenhouse gases from fossil fuels and agricultural activities is the primary cause, exacerbated by ideological division and psychological distance. The U.S. has seen some progress with a 7% decrease in emissions over the past 30 years and a growing shift toward renewable …

Environmental Justice And Social Work: A Study Across Practice Settings In Three U.S. States, Lisa Reyes Mason, Sierra Roach Coye, Smitha Rao, Amy Krings, Julia Santucci

Graduate School of Social Work: Faculty Scholarship

Environmental justice is essential for improved quality of life and sustainable wellbeing. This study examines how environmental issues and related injustices are surfacing in U.S. social work practice and social work readiness to respond, and what resources social workers are most interested in. Data are from an online survey of U.S. social workers (N = 337) in Colorado, Ohio, and Tennessee. Participants answered questions about their social work background, current job, environmental issues in practice, resources, and demographics. Data were analyzed with descriptive statistics. For nine issues, at least 30% of participants reported these as surfacing sometimes or often, with …

Policies And Programs For Water-Wise Residential Landscaping In Utah, Charlotte Clark, Kendall Becker, Scott Hotaling

All Current Publications

Water-wise landscaping is the practice of using plants in a landscape that are adapted to local conditions and only need small amounts of water. Converting yards to water-wise landscaping conserves water and is a climate adaptation action residents can take to benefit Utah as temperatures rise and drought becomes more common. Many policies and programs in Utah help residents use water conscientiously and make changes. This fact sheet provides information regarding current and future water-wise landscaping policies and programs in Utah.

Geological Support Technology Framework System For Mining Induced Hazards And Damage Reduction Mining Of Geological Conditions In Western Mining Area, Wang Shuangming, Sun Qiang, Geng Jishi, Yuan Shihao, Gu Chao, Yang Duoxing, Niu Chao, Lu Tuo, Guo Chen, Zhang Huanlan, Huang Haiyu, Shi Qingmin

Coal Geology & Exploration

Objective Coals, as the main energy in China for the long term, secure the basic needs for energy development in China. However, large-scale, intense coal mining damages the geologic environment of coal mining areas, as well as inducing hazards such as water inrushes and rock bursts. Methods To overcome the challenges in geological security through the prediction and early warning of damage to geologic environments and damage-reducing mining faced by safe, efficient coal mining, this study, based on the interdisciplinary characteristics of the geological security, highlighted the hazard control mechanisms and mining-inducing hazard patterns of geological conditions, underscored the whole-space-time …

Table Of Contents, The Editors

Coal Geology & Exploration

No abstract provided.

Pillar Wall Angles Of Karst Collapse Pillars In The Xishan Coalfield: Characteristics And Implications, Zhao Jingui, Wang Jiangwei, Yang Gaofeng, Guo Mintai

Coal Geology & Exploration

Significance As coal mining expands into deep parts, karst collapse pillars have become one of the most concealed disaster-causing geological factors in coal mining from mines in North China. The pillar wall angle of a collapse pillar serves as an important index used to describe the morphology of the collapse pillar. Methods and Results With 265 karst collapse pillars cut by the fully mechanized mining of the upper and lower coal seams in the Xishan coalfield as the data source, this study extracted the geological information contained in the pillar wall angles of karst collapse pillars in the Xishan coalfield …

R&D And Application Of An Experimental System For Coal Permeability Enhancement Through Resonance Under The Excitation Of Low-Frequency Vibration, Wen Zhihui, Guo Shuqian, Wei Jianping, Zhang Tiegang, Wang Jianwei, Zhang Libo, Ren Yongjie

Coal Geology & Exploration

Objective As an emerging green, efficient method for enhancing coal permeability, coal resonance under the excitation of vibration waves works by stimulating the development of pores and fractures in coals using the stress waves generated by low-frequency vibration. To investigate the impacts of excitation frequency, stress field, and resonance effect on permeability enhancement, as well as exploring the mechanisms behind coal permeability enhancement using the method, this study independently designed and developed an experimental system. Methods The system, consisting of a mainframe control unit, a coal-sample clamping unit, a vibrational excitation unit, and a coal vibration parameter monitoring unit, allows …

A Tin-Gtp Algorithm-Based Technique For 3d Geological Modeling Of Coal Mines, Wang Xiaohui, Liu Zaibin, Zhang Dongliang, Ma Liang, Chen Baohui, Lei Xiaorong, Bai Baojun, Yan Junsheng

Coal Geology & Exploration

Background A 3D geological model of a coal mine serves as an essential prerequisite to guiding the safe and efficient production of coal mines, holding great significance for precise coal mining and geological guarantee. Especially in complex geologic conditions, the failure of geological models to accurately describe the relationship between structures and strata will affect the mining area planning, mining processes, and production efficiency during the production of coal mines. Methods With the Qipanjing Coal Mine in the Zhuozishan Coalfield, Inner Mongolia, as an example, this study investigated the technology for high-accuracy 3D geological modeling of coal mines based on …

Accumulation Mechanisms And Resource Potential Of Helium In Coal Measures: A Case Study Of The Eastern Margin Of The Ordos Basin, Liu Xiangbai, Tao Shizhen, Yang Xiuchun, Zhao Qun, Chen Yanyan, Liu Ziyang, Pei Xiangbing, Wang Longfei, Yi Wei, Feng Jianqiu, Zhang Tan, Gao Jianrong, Tao Xiaowan, Liu Zhuangxiaoxue, Li Chaozheng, Yang Yiqing, Chen Yue

Coal Geology & Exploration

Background Helium, with advantages such as stable chemical properties and high thermal conductivity, has been extensively applied in high-tech sectors like national defense, military, aviation, and aerospace, playing an irreplaceable role. Presently, helium in China is primarily imported from other countries, manifesting a high degree of dependence on foreign trade, suggesting a prominent issue concerning helium resource security. Previous studies on helium principally focus on conventional natural gas, rendering helium in coal measures relatively under-studied. Objective and Methods To determine the distribution and potential of helium resources in coal measures, this study analyzed the coal-measure gas sampled from the eastern …

Coal Permeability Enhancement Via Cyclic Percussion Using Low-Temperature Liquid Co2 And High-Temperature Water Vapor And Simulations Of Resultant Gas Drainage Performance, Qin Lei, Wang Ping, School Of Civil And Resource Engineering, University Of Science And Technology Beijing, Beijing 100083, China Shugang, Wang Hui, Liu Pengfei, Li Jiawei, Lin Haifei

Coal Geology & Exploration

Objective In the application of the coal seam permeability enhancement technique based on liquid CO₂, pore water in coal seams freezes due to low temperatures, blocking pathways for gas migration. Hence, this study developed a technique for coal permeability enhancement through cyclic percussion using low-temperature liquid CO₂ and high-temperature water vapor (also referred to as the cyclic cold and hot percussion). Methods This study delved into the permeability evolutionary patterns of coals under cyclic cold and hot percussion using a low-field nuclear magnetic resonance (NMR) spectrometer, an automatic coal permeability tester, a contact angle tester, and 3D …

Deep Beam Theory-Based Mechanical Analysis Of Water-Resisting Key Strata Of Coal Seam Floors In A Deep Mining Environment, Wang Bingwen, Zha Wenhua, Lu Haifeng

Coal Geology & Exploration

Objective An increase in the mining depth of mines poses a more serious threat from highly confined karst water, resulting in water hazards like water inflow and inrushes on the mining faces of coal seams. The key content used to address this issue is to analyze the water pressure resistance of the water-resisting key stratum of the coal seam floor in a deep mining environment. Methods This study simplified a water-resisting key stratum into a rock beam model and then dealt with this model using the deep beam theory in the prediction of water inrushes in deep mining. Specifically, by …

Fracture Mechanical Criteria And Simulation Of Floors With Y-Shaped Branches Of Major Faults In Coal Mines, Li Ang, Sun Jingxin, Zhang Wenzhong, Zhang Zhuang, Yang Yuxuan, Wang Weidong, Lyu Wei, Fan Liuyi

Coal Geology & Exploration

Objective Despite wide distribution, the branches of major faults (also referred to as the fault branches) tend to be overlooked. However, they represent one of the primary causes of water inrush. Methods Under the engineering geological background of the Liuzhuang coal mine in Anhui Province, this study established a fracture mechanical disaster model for fault branches under the impacts of both seepage and stress based on the criteria for compression-shear fracture of rock masses considering the Mohr-Coulomb criterion. Using this model, this study obtained the critical water pressure and the minimum safe distance between the fault branch and the floor's …

Elastoplastic Stress Analysis Of Multi-Refrigerant Combined Heterogeneous Artificial Frozen Wall, Wang Bin, Liang Xiuling, Zhang Zihao, Cai Haibing, Rong Chuanxin

Coal Geology & Exploration

Objective Affected by the temperature difference of the refrigerant and the distance difference between the frozen formation and the freezing pipes, the heterogeneity of the multi-refrigerant combined double-row-pipe frozen wall is more significant. In order to evaluate the safety of such frozen wall reasonably, the elastic plastic stress analysis should be carried out for the artificial frozen wall with multi-refrigerant considering the heterogeneity. Methods The frozen wall at 1/4 pipe distance was selected as the characteristic section. Then, the temperature distribution curve on this section was equivalently converted to three linear functions, and the frozen wall was regarded as a …

Analytical Model For Reactive Solute Transport In A Channel-Matrix System, Wei Nana, Li Xu, Xu Guangquan, Zhang Haitao, Shao Zefan

Coal Geology & Exploration

Objective The accurate quantitative characterization of fractured media and the theoretical research on solute transport in fractured media have become the key to the prevention and control of groundwater contamination in fractured aquifers. Currently, fractured aquifers are generalized to horizontal fractures, ignoring the geometric characteristics of the open parts of fractures, called channels, and the impacts of matrix diffusion on solute transport. Methods A model for solute transport in a single channel-matrix system was established, obtaining the semi-analytical solutions using Laplace and numerical inverse transforms. The COMSOL Multiphysics software was employed to construct a numerical model for verification. Furthermore, the …

Landslide Sensitivity Assessment Of Coal Mining Subsidence Areas Based On Information Value - Machine Learning Coupling Models, Niu Chenhao, Jiao Runcheng, Han Jianfeng, Wang Shengyu, Guo Xuefei, Liu Chang, Han Yucheng, Song Guofeng

Coal Geology & Exploration

Objective Due to their special geological conditions and coal mining background, coal mining subsidence areas are prone to suffer from ground cracks and subsidence, which tend to further induce geological disasters such as landslides. This makes it extremely necessary to conduct landslide sensitivity assessment of these areas using appropriate influencing factors and training models. Methods This study investigated the Xishan coal mine area in Beijing as an example to conduct landslide sensitivity assessment of coal mining subsidence areas by coupling slope units with mathematical statistical and machine learning models. With 10 influencing factors, including topographic and geomorphic factors such as …

Research And Application Of The Seismic Exploration Technique Using Reflected In-Seam Waves In Identifying Folds And Faults In Coal Seams, Wu Guoqing

Coal Geology & Exploration

Background Accurately identifying subsurface anomalies is crucial to building a geological transparency system in the transformation to intelligent coal mines. The precise exploration of fold anomalies is a challenge of underground geophysical exploration technology, holding great significance for reducing excavation costs, mining difficulties, and safety risks. Objective and Methods Previous in-seam seismic explorations reveal that folds pose significant impacts on the propagation characteristics of in-seam waves. However, conventional inversion techniques of in-seam waves are difficult to distinguish folds from faults. This study constructed numerical models for faults and folds with similar geometric shapes and equal exploration distances. Specifically, the differences …

A Method For Reconstructing Consecutively Missing Seismic Data Based On Recurrent Feature Reasoning, Li Zijuan, Chang Guangyao, Jia Yongna

Coal Geology & Exploration

Objective Due to the constraints of natural environments like rapids, rifts, and high mountains, the acquired seismic data are often challenged by consecutive missing, affecting subsequent seismic data processing and geologic analysis. Hence, it is necessary to reconstruct the missing data through interpolation. Methods This study proposed a method for reconstructing consecutively missing seismic data based on recurrent feature reasoning. First, the missing seismic data undergo partial convolution operations, in which the weight of the convolution results is adaptively adjusted based on the proportion of valid feature map data in the receptive field, avoiding invalid convolution operations on consecutively missing …