Results 41 to 50 of about 54,813 (368)

Strontium isotope compositions of river waters as records of lithology-dependent mass transfers : the Garonne river and its tributaries (SW France) [PDF]

, 2000
The relation of lithology in the drainage basin to the dissolved load of the Garonne river and its main tributaries, in southwestern France, was evaluated by determining 87Sr/86Sr ratios, and concentrations of major and trace elements during a 2-year ...
Clauer, Norbert, Probst, Jean-Luc, Semhi, Khadija   +2 more
core   +2 more sources

Early Neoproterozoic limestones from the Gwna Group, Anglesey [PDF]

, 1998
Limestone megaclasts up to hundreds of metres in size are present within the Gwna Group mélange, North Wales, UK. The mélange has been interpreted as part of a Peri-Gondwanan fore-arc accretionary complex although the age of deposition remains ...
JANA M. HORÁK, JANE A. EVANS, O'Brian, Blatt, Matthew, Shackleton, Dickin, Gibbons, Denison, McCausland, Montañez, Schuster, Shackleton, Shields, Walter, White, Wood   +16 more
core   +4 more sources

Incorporation of strontium in earthworm-secreted calcium carbonate granules produced in strontium-amended and strontium-bearing soil [PDF]

Geochimica et Cosmochimica Acta, 2013
This paper investigates the incorporation of Sr into biomineralized calcium carbonate granules secreted by the earthworm Lumbricus terrestris. Experiments were conducted using an agricultural soil amended with Sr(NO3)2 to give concentrations in the range 50 - 500 mg kg-1 Sr and a naturally Sr-rich, Celestine-bearing soil containing up to 11 000 mg kg-1
Brinza, Loredana, Quinn, Paul, Mosselmans, Fred, Schofield, Paul, Hodson, Mark Edward   +4 more
openaire   +2 more sources

Biomineralisation in the Palaeozoic oceans: evidence for simultaneous crystallisation of high and low magnesium calcite by phacopine trilobites [PDF]

, 2012
The chemical composition and microstructure of the calcite cuticles of eleven species of phacopine trilobites have been investigated by electron beam imaging, diffraction, and microanalysis, and results reveal that the lenses of their schizochroal eyes ...
Alan W. Owen, Blake, Brand, Bruton, Campbell, Carpenter, Clare Torney, Clarkson, Clarkson, Dickson, Dickson, Dickson, Dickson, Goldsmith, Grover, Gunderson, Hardie, James, Klug, Lee, Lee, Lee, Lee, Leutoff, Lohmann, Lowestam, Martin R. Lee, McAllister, McAllister, Miller, Porter, Reeder, Rush, Schoenemann, Taylor, Teigler, Tobin, Torney, Towe, Webb, Wilmot, Wilmot, Zhuravlev   +42 more
core   +1 more source

Interaction of Celestine Concentrate and Reagent Grade SrSO4 with Oxalate Solutions [PDF]

Acta Montanistica Slovaca, 2012
The interaction of reagent grade strontium sulphate and celestine concentrate with aqueous solutions of oxalic acid, sodiumoxalate and ammonium oxalate for the production of strontium carbonate were investigated for different oxalate compound:SrSO4 ...
Abdullah Obut
doaj  

Oxidation of Carbon Monoxide on Strontium Ferrate

ECS Proceedings Volumes, 1995
The subject of conversion of natural gas to electric energy in Solid Oxide Fuel Cells (SOFCs) and formation of C{sub 2}-products from methane in electrochemical reactors, has received considerable attention recently. In order to reduce the problem of coke formation in SOFCs, methane is co-fed with water, forming CO and H{sub 2}.
R. Tunold, G.O. Lauvstad, S. Sunde
openaire   +2 more sources

The Effect of Treatment of Acidosis on Calcium Balance in Patients with Chronic Azotemic Renal Disease [PDF]

, 1967
Small but statistically significant negative calcium balances were found in each of eight studies in seven patients with chronic azotemic renal disease when stable metabolic acidosis was present.
Lemann, Jacob, Jr., Lennon, Edward J., Litzow, John R.   +2 more
core   +3 more sources

Performance and Environmental Evaluation of Stabilized Base Material with Strontium Slag in Low-Volume Road in China

Advances in Civil Engineering, 2019
Strontium slag, a by-product of the strontium carbonate refining industry, has been produced at million tons per year in China. The use of strontium slag in the roads could reduce the demand of virgin materials and help solve the environmental problems ...
Teng Wang, Qiulin Tao, Zhaoxing Xie
doaj   +1 more source

Effects of atmospheric CO2 consumption on rock weathering in the Pearl River basin, China [PDF]

E3S Web of Conferences, 2019
Atmospheric CO2 is absorbed and dissolved in water via karst processes not only in carbonate rock areas, but in all rock areas of the earth. The chemical and isotopic analysis results, particularly of strontium, for water samples collected from eleven ...
Qin Xiaoqun, Jiang Zhongcheng, Zhang Liankai, Huang Qibo, Liu Pengyu   +4 more
doaj   +1 more source

⁸⁷Sr/⁸⁶Sr chemostratigraphy of Neoproterozoic Dalradian limestones of Scotland and Ireland: constraints on depositional ages and time scales [PDF]

, 2004
New calcite ⁸⁷Sr/⁸⁶Sr data for 47 limestones from the metamorphosed and deformed Neoproterozoic-Cambrian Dalradian Supergroup of Scotland and Ireland are used to identify secular trends in seawater <sup>
Ellam, R.M., Fallick, A.E., Graham, C.M., Thomas, C.W.   +3 more
core   +1 more source