Results 131 to 140 of about 16,095 (267)

Autonomous Mobile Inspection Robots in Deep Underground Mining-The Current State of the Art and Future Perspectives. [PDF]

Sensors (Basel)
Konieczna-Fuławka M, Koval A, Nikolakopoulos G, Fumagalli M, Santas Moreu L, Vigara-Puche V, Müller J, Prenner M.   +7 more
europepmc   +1 more source

Redacted Disclosures and Bank Loan Contract Terms

Journal of Corporate Accounting &Finance, EarlyView.
ABSTRACT We investigate the impact of redacting disclosures on bank loan contracts. Our findings indicate that firms that redact information have loans with significantly higher spreads, shorter maturities, and more restrictive covenants and face a greater likelihood they will be required to post collateral compared to firms that do not redact ...
Karel Hrazdil, Jiyuan Li, Yuzeng Li
wiley   +1 more source

Advanced Diesel Powertrains for Underground Mining Mobile Equipment. [PDF]

Min Metall Explor
Bugarski AD, Ritter DA.
europepmc   +1 more source

Evaluating Erosional Stability of Reconstructed Mine Landscapes Using Landform Evolution Models: Parameterisation and Decadal‐Scale Erosion Assessment

Land Degradation &Development, EarlyView.
ABSTRACT Ensuring the long‐term erosional stability of post‐mining landforms remains a major challenge in open‐pit mining. Reconstructed landscapes must support the agreed post‐mining land use, such as cattle grazing in the Hunter region of southeastern Australia, requiring stable pasture and minimal soil loss.
I. P. Senanayake, G. R. Hancock
wiley   +1 more source

Physicochemical Characteristics and Their Variation of Coal Dust Originating from Underground Mining Sites. [PDF]

ACS Omega
Zhou Y, Liu J, Jin L, Li G, Zhou G, Lin M, Ou S, Tong L, Zhang W, Wang X, Gao H.   +10 more
europepmc   +1 more source

3D effects of seawater on electrical resistivity tomography near shorelines—Challenges and possible solutions inferred from synthetic and field data

Near Surface Geophysics, EarlyView.
Abstract Electrical resistivity tomography (ERT) is one of the most widely used geophysical techniques for hydrogeological questions, such as investigating the groundwater transition zone between land and sea. The interpretation of 2D coast‐parallel ERT profiles is challenging because most of the electrical current flows through the highly conductive ...
Simon Levin Fischer, Ercan Erkul, Jasper Justus Lutz Hoffmann, Şerif Barış, Ertan Pekşen, İsmail Kaplanvural, Wolfgang Rabbel   +6 more
wiley   +1 more source

Study on the degradation mechanism and performance improvement of coal gangue-based shotcrete under high-salt dry-wet cycling conditions in underground mining environments. [PDF]

Sci Prog
Wu H, Gao M, Chen S, Ren H, Hu Z, Li M, Guo C, Guo Z.   +7 more
europepmc   +1 more source

Recent advancements and emerging challenges in deep underground engineering

Deep Underground Science and Engineering, EarlyView.
Jianguo Wang, Chunfai Leung
wiley   +1 more source

Interplanetary frontiers: terraforming from an invasion science perspective

Oikos, EarlyView.
The pursuit of a multi‐planetary existence represents one of humanity's greatest frontiers. If applied justly, it offers an opportunity to extend its civilization's lifespan amid escalating sustainability crises on Earth. One approach increasingly gaining traction is terraforming, a hitherto theoretical ecological and evolutionary experiment revolving ...
Teun Everts, Ronaldo Sousa, Phillip J. Haubrock   +2 more
wiley   +1 more source

Evolution and stability mechanics analysis of the elliptical stress arch structure in the surrounding rocks of the underground mining area. [PDF]

Sci Rep
Li Y, Chang G.
europepmc   +1 more source