Results 11 to 20 of about 2,556,267 (262)

Mineral Exploration Funds [PDF]

open access: yes, 1968
While independent mineral operators have traditionally been confronted with a scarcity of risk capital for mineral development, willing investors have often experienced equal difficulty in locating responsible mineral operations in which to invest.
Bloomenthal, Harold S.
core   +2 more sources

Pyrite oxidation under initially neutral pH conditions and in the presence of Acidithiobacillus ferrooxidans and micromolar hydrogen peroxide [PDF]

open access: yes, 2012
Hydrogen peroxide (H2O2) at a micromolar level played a role in the microbial surface oxidation of pyrite crystals under initially neutral pH. When the mineral-bacteria system was cyclically exposed to 50 μM H2O2, the colonization of Acidithiobacillus ...
Lin, C., Ma, Y.
core   +2 more sources

Mineral maturity and crystallinity index are distinct characteristics of bone mineral [PDF]

open access: yes, 2010
The purpose of this study was to test the hypothesis that mineral maturity and crystallinity index are two different characteristics of bone mineral. To this end, Fourier transform infrared microspectroscopy (FTIRM) was used.
A Boskey   +64 more
core   +3 more sources

Biochemical Composition and Nutritional Value of Fresh Tuber of Water Yam (Dioscorea alata L.) Local Accessions from East Java, Indonesia

open access: yesAGRIVITA Journal of Agricultural Science, 2020
Water yam (Dioscorea alata L.) is an important tuber crop containing essential nutrition as an alternative food source. This study aimed to analyze the biochemical composition and nutritional value of fresh tuber of fifteen local accessions of water yam ...
Fauziah Fauziah   +3 more
doaj   +1 more source

Engineering method for determining the sulfur of mineral impurities for the prediction of hazardous properties of coal seams

open access: yesГеофизический журнал, 2023
Purpose: develop an engineering method for determining sulfur in mineral impurities to predict the hazardous properties of mine seams in mining operations.
Ye.S. Rudniev   +4 more
doaj   +1 more source

Forage herbs improve mineral composition of grassland herbage [PDF]

open access: yes, 2011
Provision of an adequate mineral supply in the diets of ruminants fed mainly on grassland herbage can present a challenge if mineral concentrations are suboptimal for animal nutrition.
Eriksen, Jørgen   +6 more
core   +1 more source

Casi todo era negro: resistencias y puntos de fuga en torno al tráfico ilegal de mineral (Galicia, 1939-1945)

open access: yesCahiers de Civilisation Espagnole Contemporaine, 2017
The aim of this article is to glimpse readings that can be made on aspects of everyday life of the populations involved in the extraction and illegal sale of tungsten in the years of the Second World War in Galicia.
Ana Cabana Iglesia
doaj   +1 more source

Changes to Cobb 500 chick characteristics, bone ash, and residual yolk mineral reserves during time spent in the hatcher

open access: yesPoultry Science, 2020
Previous work has identified an effect of hatch time on chick femur mineralization. This experiment assessed the impact of hatch time and a 24-h post-hatch unfed time period on chick bone mineralization and yolk mineral utilization.
R.L. Hopcroft, P.J. Groves, W.I. Muir
doaj   +1 more source

Investigation of Farm Animal Drinking Water Mineral Contents in Iğdır Province of Turkey

open access: yesTurkish Journal of Agriculture: Food Science and Technology, 2020
With this research, it was aimed to investigate the content of some heavy metals (Cu, Zn, Fe, Mn) and macro minerals (Mg, Ca, K, Na) in the water resources that meet the water needs of livestock in Iğdır. Water samples were collected from natural springs,
Başaran Karademir   +4 more
doaj   +1 more source

Reservoir theory for studying the geochemical evolution of soils [PDF]

open access: yes, 2010
[1] Linking mineral weathering rates measured in the laboratory to those measured at the landscape scale is problematic. In laboratory studies, collections of minerals are exposed to the same weathering environment over a fixed amount of time. In natural
Almond   +58 more
core   +1 more source

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