Results 111 to 120 of about 1,612 (205)

History of research in mineral resources : [35th Conference of the International Commission on the History of Geological Sciences, Madrid y Almadén(España), 1-14 julio 2010] [PDF]

open access: yes, 2010
The study of the research history of geological resources is one of the main objectives of the International Commission on the History of Geological Sciences (INHIGEO), which was created in 1967 within the International Union of Geological Sciences (IUGS)
Mazadiego Martínez, Luis Felipe   +3 more
core   +1 more source

Improved ORB-FLANN efficient matching method for coal gangue image

open access: yesMeitan kexue jishu
In order to solve the problem of grasping failure or missing grasping due to the change of target gangue position and posture caused by belt slip, deviation and belt speed fluctuation of belt conveyor when the gangue sorting robot sorts gangue, an ...
Hongwei MA   +6 more
doaj   +1 more source

Towards an ethical jewellery business [PDF]

open access: yes, 2003
This report presents the results of phase 1 of research which is intended to identify the main social, environmental and ethical issues in the jewellery sector and to assist industry bodies in identifying how to integrate ethical considerations into ...
Macfarlane, Magnus   +2 more
core  

Research on image recognition method of coal gangue under complex working condition environment

open access: yesPhysicochemical Problems of Mineral Processing
In response to the issues of low coal gangue recognition accuracy, missed detections, and false detections due to the complex working conditions of low illumination, high blur, and occlusion in underground coal mines, an ELS-YOLO coal gangue detection model is proposed. The ELS-YOLO model is based on the YOLOv10s model.
Deyong Li   +5 more
openaire   +1 more source

Research of coal and gangue interface recognition based on Mel frequency cepstrum coefficient and genetic algorithm

open access: yesGong-kuang zidonghua, 2013
In view of problems that γ ray method is not suitable for working face with no or little radioactive elements in roof and radar detection method has little detection range and serious signal attenuation which were used in current coal and gangue ...
HE Ai-xiang   +3 more
doaj  

Geologic and mineral and water resources investigations in western Colorado, using Skylab EREP data [PDF]

open access: yes
The author has identified the following significant results. Skylab photographs are superior to ERTS images for photogeologic interpretation, primarily because of improved resolution.
Huntley, D.   +5 more
core   +1 more source

Research on coal gangue recognition method based on CED-YOLOv5s model

open access: yesGong-kuang zidonghua
Due to the complex working conditions of high noise, low illumination, and blurred movement in coal mines underground, as well as the phenomenon of coal gangue easily gathering, it is difficult to extract features from coal gangue object detection models. The classification and positioning of coal gangue are inaccurate.
HE Kai   +5 more
openaire   +1 more source

Workshop on Magmatic Processes of Early Planetary Crusts: Magma Oceans and Stratiform Layered Intrusions [PDF]

open access: yes
The significance of the lunar highland pristine cumulate samples were reevaluated with the aid of the additional insights provided by geologically constrained terrestrial investigations.
Mccallum, I. S., Walker, D.
core   +1 more source

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