Results 91 to 100 of about 1,237,224 (236)

Time dependent FTIR spectra of mineral waters after contact with air [PDF]

open access: yesarXiv, 2010
FTIR spectra of mineral waters of Slavyanovskaya, Aqua Montana, Bad Harzburger and Christinen with time from first contact of water with open air were analysed. The kinetic of spectral changes of Slavyanovskaya mineral water in the regions of stretch, deformation and intermolecular vibrations was measured.
arxiv  

The Equality of Sub-Surface Minerals [PDF]

open access: yes, 2010
Sub-surface minerals are in most cases considered to be the proprietary right of a country should those minerals be found within its borders. PRO169 (Indigenous Peoples’ Rights, International Labour Organization) has recorded instances where the private ...
Gagnon, Jean-Paul
core   +1 more source

Reformulating the Kriging Algorithm to the Practicing Miner [PDF]

open access: yesarXiv, 2013
The main aim of applied geostatistics is to derive `mean' and `variance' of ore to the practicing miner. This paper suggests brand-new approach to the problem.
arxiv  

New approach to evaluate the equivalent circulating density (ECD) using artificial intelligence techniques

open access: yesJournal of Petroleum Exploration and Production Technology, 2018
The equivalent circulation density (ECD) is a very important parameter in drilling high-pressure high-temperature and deepwater wells. ECD is a key parameter during drilling through formations where the margin between the pore pressure and the fracture ...
Khaled Z. Abdelgawad   +5 more
doaj   +1 more source

Evaluation of Homogeneity from Ore-bodied in Nigeria for Secondary Mineral Prospective [PDF]

open access: yes, 2012
Samples from ore–bodied areas at different locations in Papalanto and Ifo in Ogun-State, South-West of Nigeria, where Ewekoro cement industry is situated, were analyzed so as to recover some secondary minerals of economic value.
Inegbenebor, A. I.   +2 more
core  

Self-sufficiency with vitamins and minerals on organic dairy farms [PDF]

open access: yes, 2009
Self-sufficiency of nutrients is a central element in the organic farming principles. In a project involving five private organic dairy farms, we aimed to achieve self-sufficiency in vitamins and minerals at farm level.
Jensen, S.K.   +3 more
core  

Exploring agglomeration of respirable silica and other particles in coal mine dust

open access: yesScientific Reports
A better understanding of respirable dust particle characteristics is needed to advance exposure monitoring and prevent health effects. In coal mines and other occupational environments, understanding respirable silica is especially important.
Emily Sarver   +3 more
doaj   +1 more source

In bloom [PDF]

open access: yes, 2010
Much of the phosphorus which ends up in stream sediment, either through soil erosion or via field drains, is transported attached to particles. The quantity and chemical form of phosphorus in the stream sediment largely controls its concentration in ...
Rawlins, Barry
core  

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