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Carbonato de calcio composicao quimica
Carbonato de calcio composicao quimica













carbonato de calcio composicao quimica carbonato de calcio composicao quimica

Planktonic foraminifera: selective solution and paleoclimatic interpretation. Na, Mg, Sr in the tests of planktonic foraminifera. Cushman Foundation for Foraminiferal Research, Special Publications, 13: 27-55.īender M.L., Lorens R.B., Williams D.F. (eds.) Dissolution of Deep-Sea Carbonates. Progressive dissolution and ultrastructural breakdown of planktonic foraminifera. Quaternary Science Reviews, 24: 821-834.īé A.W.H., Morse J.W., Harrison S.M. Planktonic foraminiferal Mg/Ca as a proxy for past oceanic temperatures: A methodological overview and data compilation for the Last Glacial Maximum. Paleoceanography, 18 (2): 1050.Īrmstrong H.A., Brasier, M.D.

carbonato de calcio composicao quimica

Calibration of Mg/Ca thermometry in planktonic foraminifera from a sediment trap time series. Dissolution of deep-sea carbonate: preliminary calibration of preservational and morphologic aspects. When pH 5.0, drug add in was 2 mg, the encapsulation efficiency was (86.08 +/- 3.36) % and the drug loading was 8.01 +/- 0.30 mg x m(L-1).Adelseck C.G. As a model drug, Rhodamin B isothiocyanate labeled bovine serum albumin (RBITC-BSA) was encapsulated in microcapsule depended on pH sensitive of the microcapsule film. The result revealed that Fe3O4 NPs and PAH were successfully deposited on the surface of CaCO3 microparticles, the microcapsule manifested superparamagnetism, size and saturation magnetization were 4.9 +/- 1.2 microm and 8.94 emu x g(-1), respectively. Scanning electron microscopy (SEM), Zetasizer and vibrating sample magnetometer (VSM) were used to characterize the microcapsule's morphology, size and magnetic properties. Microcapsules containing Fe3O4 NPs were fabricated by Fe3O4 NPs and PAH alternately self-assembly on calcium carbonate microparticles firstly, then 0.2 molL(-1) EDTA was used to remove the calcium carbonate.

carbonato de calcio composicao quimica

The result showed that Fe3O4 NPs were selectively deposited on the surface of quartz cell. Quartz cell also was used as a substrate for building multilayer films to evaluate the capability of forming planar film. The Fe3O4 NPs were prepared by chemical co-precipitation, and characterized by transmission electron microscopy (TEM) and infrared spectrum (IR). In this study, polyelectrolyte microcapsules have been fabricated by biocompatible ferrosoferric oxide nanoparticles (Fe3O4 NPs) and poly allyamine hydrochloride (PAH) using layer by layer assembly technique.















Carbonato de calcio composicao quimica