Results 141 to 150 of about 1,022,147 (306)

Mining laws of the State of Oregon

open access: yes, 1954
This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.-1954Issues for 1942- include "reprints of Federal ...

core  

Knox Mining: Calderwood [PDF]

open access: yes, 1973
Core Repository Data Files Driller: Knox Mining Project: Calderwoodhttps://digitalmaine.com/mgs_core_repository/1006/thumbnail ...
Knox Mining
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Local Structures of Se and Br in Cretaceous–Paleogene Boundary Sediments and Concentration Effects of Ferrihydrite Originating From Impact Ejecta

open access: yesGeological Journal, EarlyView.
Chemical states of Se and Br atoms in the KPg boundary sediments from Stevns Klint were studied using XAFS spectroscopy. The high concentrations of Se4+ could become an index of the degree to which the global environment was soiled with dust and ash derived from impact ejecta or volcanic eruptions.
Kei‐ichiro Murai   +5 more
wiley   +1 more source

Petrogenesis and Tectonic Setting of Late Mesozoic Felsic Magmatic Rocks in the Wangmushan Mining District, Northern Fujian, South China

open access: yesGeological Journal, EarlyView.
The rhyolitic ignimbrite and K‐feldspar granite porphyry from the Wangmushan mining district, northern Fujian yield ages of 173.8 ± 0.8 and 102.6 ± 0.4 Ma, respectively. Geochemical data, zircon trace elements, whole‐rock Sr–Nd–Pb isotope data, and zircon Hf isotopic compositions indicate that the rhyolitic ignimbrite originated from partial remelting ...
Wei Shaogang   +7 more
wiley   +1 more source

Web Mining Functions in an Academic Search Application [PDF]

open access: yes
This paper deals with Web mining and the different categories of Web mining like content, structure and usage mining. The application of Web mining in an academic search application has been discussed.
Vijayakumar BALAKRISHNAN   +1 more
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Country‐Level Ecological Associations With Multiple Myeloma Prevalence and Death Rate: A Pan‐Database Study, 1990–2021

open access: yesiNew Medicine, EarlyView.
Using 18 global databases, this country‐level ecological study identified major positive and negative correlates of multiple myeloma prevalence and death rate, providing hypothesis‐generating evidence to inform future public health research and policy development.
Peng Xu   +8 more
wiley   +1 more source

The release of zinc and lead from mine tailings

open access: yes, 2006
Mining and processing of metal ores are important causes of soil and groundwater contamination in many regions worldwide. Metal contaminations are a serious risk for the environment and human health. The assessment of metal contaminations in the soil is therefore an important task.
openaire   +2 more sources

TEXT MINING – PREREQUISITE FOR KNOWLEDGE MANAGEMENT SYSTEMS [PDF]

open access: yes
Text mining is an interdisciplinary field with the main purpose of retrieving new knowledge from large collections of text documents. This paper presents the main techniques used for knowledge extraction through text mining and their main areas of ...
Dragoº Marcel VESPAN
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Specific peptide enrichment strategies for neuropsychiatric disorders: From material design to diagnostic applications

open access: yesInterdisciplinary Medicine, EarlyView.
This review outlines specific peptide enrichment strategies, including metal, magnetic oxides, functional polymers, and antibody‐based approaches, and their mechanisms, highlighting applications in biomarker discovery for major neurological and psychiatric disorders.
Xue Zhang   +8 more
wiley   +1 more source

Impacts of lead/zinc mining and smelting on the environment and human health in China

open access: yes, 2012
Mining and smelting are important economic activities. However, mining-related industries are also some of the largest sources of environmental pollution from heavy metals. China is one of the largest producers and consumers of lead and zinc in the world.
Li Y. H.   +5 more
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