Results 11 to 20 of about 897,664 (149)

Nonsilting transport characteristics of coal slurry in a deep underground fluidization conveying pipeline under the action of a guide vane swirler

Deep Underground Science and Engineering, EarlyView.
Aiming at the scientific frontiers of in situ fluidized mining of deep resources, a deep coal fluidized pipeline lifting system based on hydraulic conveying has been proposed. To solve the issue of particle sedimentation of large particles in horizontal connection sections, a solution involving the installation of guide vane‐type swirlers in the ...
Jiusheng Bao, Shaodi Zhao, Yan Yin, Zhongbin Wang, Shuai Liu, Shirong Ge   +5 more
wiley   +1 more source

Mars base buildup scenarios [PDF]

, 1985
Two Mars surface based build-up scenarios are presented in order to help visualize the mission and to serve as a basis for trade studies. In the first scenario, direct manned landings on the Martian surface occur early in the missions and scientific ...
Blacic, J. D.
core   +1 more source

Vegetation Dynamics in Ecuador [PDF]

, 2019
Global forest cover has suffered a dramatic reduction during recent decades, especially in tropical regions, which is mainly due to human activities caused by enhanced population pressures.
González-Jaramillo, Víctor Hugo
core   +1 more source

Approach for Monitoring Spatiotemporal Changes in Fractional Vegetation Cover Through Unmanned Aerial System-Guided-Satellite Survey: A Case Study in Mining Area

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Fractional vegetation cover (FVC) is a vital indicator for monitoring regional vegetation and ecology. Although satellite remote sensing is used to monitor long-term changes in regional FVC, its applications are limited by the spatial resolution ...
Shuang Wu, L. Deng, Jun Zhai, Zhuo Lu, Y. Wu, Yan Chen, Li-Jie Guo, H. Gao   +7 more
semanticscholar   +1 more source

Real‐time lithology identification while drilling based on drill cuttings image analysis with ensemble learning

Deep Underground Science and Engineering, EarlyView.
A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li, Ting Ren, Ningping Yao, Jon Roberts, Haitao Song, Zhongbei Li, Xueqiu He, Liang Zhao   +7 more
wiley   +1 more source

Collaborative Production Planning Based on an Intelligent Unmanned Mining System for Open-Pit Mines in the Industry 4.0 Era

Machines
Open-pit mining is a cornerstone of industrial raw material extraction, yet it is fraught with safety concerns due to rough operating conditions. The advent of Industry 4.0 has introduced advanced technologies such as AI, the IoT, and autonomous systems,
Kui Liu, Bin Mei, Qing Li, Shuai Sun, Qingping Zhang   +4 more
semanticscholar   +1 more source

Using unmanned aerial vehicle multispectral data for monitoring the outcomes of ecological restoration in mining areas

Land Degradation & Development, 2023
The effective and efficient monitoring of revegetation outcomes is a key component of ecosystem restoration. Monitoring often involves labor‐intensive manual methods, which are difficult to deploy when sites are inaccessible or involve large areas of ...
Zanxu Chen, H. Hou, Shaoliang Zhang, T. Campbell, Yongjun Yang, Mu Tu, Yang Yuan, K. Dixon   +7 more
semanticscholar   +1 more source

An interdisciplinary review of the interplay of conflict, socio‐economic factors, and land cover and vegetation dynamics in Colombia

PLANTS, PEOPLE, PLANET, EarlyView.
Colombia's forests play a crucial role in preserving biodiversity and mitigating climate change, but they are currently facing severe degradation, particularly after the 2016 Peace Agreement. Our literature review highlights a growing research interest in this topic and demonstrates how interdisciplinary approaches combining diverse methods can enhance
Estefanía Muñoz, Jesús A. Anaya, Nicola Clerici, Lina M. Estupinan‐Suarez, Isabel Lopera, Solveig Richter, Alejandro Salazar, Carlos A. Sierra, Andrés Tangarife‐Escobar, Miguel D. Mahecha, David Montero, Pablo Palacios‐Rodríguez, Pablo Ramos, Santiago Botía   +13 more
wiley   +1 more source

Below Horizon Aircraft Detection Using Deep Learning for Vision-Based Sense and Avoid

, 2019
Commercial operation of unmanned aerial vehicles (UAVs) would benefit from an onboard ability to sense and avoid (SAA) potential mid-air collision threats. In this paper we present a new approach for detection of aircraft below the horizon.
Ford, Jason J., James, Jasmin, Molloy, Timothy L.   +2 more
core   +1 more source

Path Tracking and Anti-Roll Control of Unmanned Mining Trucks on Mine Site Roads

World Electric Vehicle Journal
Aiming to address the tracking accuracy and anti-rollover problem of the unmanned mining truck path tracking process under the complex unstructured road conditions in mining areas, a coordinated control strategy for path tracking and anti-rollover based ...
Ruochen Wang, Jianan Wan, Qing Ye, Renkai Ding   +3 more
semanticscholar   +1 more source