Results 51 to 60 of about 18,898 (219)

Creep Behavior and Its Prediction of Saturated Weakly Cemented Medium-Grained Sandstone under Multiaxial Loadings

open access: yesGeofluids, 2023
Weakly cemented medium-grained sandstone in Ordos mining area of China is widely distributed under phreatic water. The creep behavior of saturated rock is important for the stability of water-resisting strata.
Qingheng Gu   +6 more
doaj   +1 more source

An Autonomous Large Language Model‐Agent Framework for Transparent and Local Time Series Forecasting

open access: yesAdvanced Intelligent Discovery, EarlyView.
Architecture of the proposed large language model (LLM)‐based agent framework for autonomous time series forecasting in thermal power generation systems. The framework operates through a vertical pipeline initiated by natural language queries from users, which are processed by the LLM Agent Core powered by Llama.cpp and a ReAct loop with persistent ...
William Gouvêa Buratto   +5 more
wiley   +1 more source

Energy Dissipation and Failure Characteristics of Layered Composite Rocks under Impact Load

open access: yesShock and Vibration, 2021
Horizontal layered composite rock samples composed of white and black sandstones with large differences in physical and mechanical properties were tested to explore the dynamic characteristics of layered composite rocks under impact load. Using the split
Wenjie Liu   +5 more
doaj   +1 more source

Cognitive Performance in Young Adults During Three Consecutive Days of Simulated Occupational Heat Stress: An Exploratory Study

open access: yesAmerican Journal of Industrial Medicine, EarlyView.
ABSTRACT Introduction Global increases in occupational heat exposure are raising concerns about worker safety and cognitive performance during prolonged and repeated shifts. At present, the cumulative effects of repeated heat exposure on cognitive performance remain unclear.
Daniel C. Moore   +4 more
wiley   +1 more source

Exploring Influence of MgO/Na2O on Melting Characteristics and Viscosity–Temperature Characteristics of Coal Slags Under Entrained Flow Gasification Condition

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Characteristics of high alkali in Zhundong coal ash may cause ash‐related slag discharge problems at entrained‐flow‐bed (EFB) gasifier. In this study, through exploring melting characteristics and viscosity–temperature characteristics, it is found that MN05, MN14, and MN23 show low FTs (< 1160°C).
Meng Li   +3 more
wiley   +1 more source

Prediction Method for the Ground Vibration Damage Boundary of Thick and Hard Rock Layer Fracture Type Mine Quakes

open access: yesGeofluids, 2022
In this study, based on the example of the ground vibration damage response of a thick and hard rock layer fracture type mine quake, and by applying the theories of mine pressure, rock mechanics and vibration energy principle, the concept of “vibration ...
Ming Zhang   +4 more
doaj   +1 more source

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson   +2 more
wiley   +1 more source

Characteristics and drainage modes of coalbed methane resources in closed coal mines in Yangquan and Jincheng Mining Areas

open access: yesMeitan kexue jishu
Affected by factors such as coal resources exhaustion, elimination of outdated and excess capacity, the number of closed coal mines in Shanxi Province has increased year by year, and the evaluation and exploration of closed or abandoned coal mine coalbed
Yang WANG   +6 more
doaj   +1 more source

Study on the Deformation Mechanism of the Bottom Plate along the Empty Lane of Deep Mining and the Control Technology of the Bottom Drum

open access: yesGeofluids, 2022
Aiming at the problem of the deformation of the roadway floor plate during the laneway during the retention period, the mechanical model of the roadway floor is established, and the deformation characteristics of the roadway floor and the change law of ...
Dongdong Pang   +7 more
doaj   +1 more source

Independent Female Directors and Green Innovation in China: The Moderating Roles of Ownership Structure and Market Competition

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study examines the impact of independent female directors (IFDs) on green innovation (GI) among Chinese‐listed firms from 2008 to 2023. Additionally, we investigate the moderating effects of ownership structure and market competition on the relationship between IFD and GI.
Muhammad Usman   +4 more
wiley   +1 more source

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