搜索结果: 1-15 共查到“矿床学与矿相学 K/Ca”相关记录47条 . 查询时间(0.419 秒)
Oxyfertil?: the answer for a productive and environmentally friendly 6-element (N,P,K,Ca,Mg,S) fertilization
Oxyfertil? productive environmentally friendly 6-element (N,P,K,Ca,Mg,S) fertilization
2012/3/28
In recent years, we have seen a growing concern in the developed farming community towards a sustainable and more environmentally friendly agriculture. In parallel, soaring energy prices are directly ...
Simulations of Interlayer Methanol in Ca- and Na-Saturated Montmorillonites Using Molecular Dynamics
Methanol Molecular Dynamics Montmorillonite
2011/12/5
Abstract: Molecular dynamics computer simulations were used to study methanol molecules confined between the layers of 2:1 phyllosilicates. The model systems are based on natural Ca- and Na-rich montm...
Infrared Study of Water Sorption on Na-, Li-, Ca-, and Mg-Exchanged (SWy-1 and SAz-1) Montmorillonite
Exchangeable Cation FTIR Hydration Hysteresis Smectite Sorption Water
2011/12/2
Abstract: An environmental infrared microbalance (EIRM) cell was used to study H2O sorption on two montmorillonite samples as a function of water content and type of exchangeable cation. The vibration...
The self-diffusion of Ca and the tracer diffusion of Mg in calcite have been measured experimen-Mg and Ca. Natural single crystals of calcite were coated with atally using isotopic tracers of gas at ...
Local Ca-Mg distribution of Mg-rich pyrope-grossular garnets synthesized at different temperatures revealed by 29Si MAS NMR spectroscopy
Local Ca-Mg distribution Mg-rich pyrope-grossular garnets synthesized different temperatures revealed 29Si MAS NMR spectroscopy
2012/4/1
Pyrope-grossular solid solutions, (Mg,Ca) Al Si O , of composition Py Gr and Py Gr were3 2 3 12 85 15 75 25
synthesized at 1000, 1200, and 1400 ?C and 30 kbars in a piston-cylinder device. The synt...
Interlayer structure, anion dynamics, and phase transitions in mixed-metal layered hydroxides: Variable temperature 35Cl NMR spectroscopy of hydrotalcite and Ca-aluminate hydrate (hydrocalumite)
Cl -intercalated hydrotalcite Ca-aluminate hydrate Variable temperature
2012/3/31
The Cl NMR spectroscopy of Cl -intercalated hydrotalcite and the Ca-aluminate hydrate, the presence of
hydrocalumite (Friedel°Os salt) demonstrates dynamical behavior of interlayer C
dynamical orde...
Burbankite, a (Sr,REE,Na,Ca)-carbonate in fluid inclusions from carbonatite-derived fluids: Identification and characterization using Laser Raman spectroscopy, SEM-EDX, and synchrotron micro-XRF analysis
Burbankite synchrotron micro-XRF analysisp SEM-EDX Laser Raman spectroscopy
2012/3/31
Burbankite, ideally (Na,Ca) (Sr,REE,Ba) (CO ) , is a rare REE carbonate mineral that until now
had been encountered only at a few localities including highly alkaline silicate rocks, carbonatites,
a...
Effect of isovalent Si, Ti substitution on the bulk moduli of Ca(Ti1-xSix) SiO5 titanites
Si Ti bulk modulus
2012/3/30
Theequationsofstateof A2/a titanitephasesofCaTiSiO ,Ca(Ti Si )SiO ,andCaSi O5 0.5 0.5 5 2 5
havebeendeterminedfromhigh-pressureX-raydiffractionmeasurements.Theisothermal
bulkmoduliare K 131.4(7)GPa(...
Relation of Water and Neutral Organic Compounds in the Interlayers of Mixed Ca/Trimethylphenylammonium-Smectites
Adsorption Organoclay Smectite TMPA
2011/12/2
Abstract: Organoclays were prepared by exchanging Ca2+ in a Ca2+-saturated smectite partially or fully with trimethylphenylammonium (TMPA) cations. The mechanistic function of these organoclays as ads...
Evaluation of Gas Transport Properties of Backfill Materials for Waste Disposal: H2 Migration Experiments in Compacted Fo-Ca Clay
Density Fo-Ca Clay Gas Critical and Breakthrough Pressures Gas Preferential Pathways H2 Migration Water Saturation Degree
2011/12/8
Abstracts: Swelling clays may play a major role in the underground disposal of high-level nuclear waste (HLW) in deep geological formations. A multibarrier concept including a waste container, a steel...
Substructure and superstructure of four-layer Ca-exchanged birnessite
Substructure superstructure four-layer Ca-exchanged birnessite
2012/3/30
Synthetic Ca-exchanged birnessite (CaBi) was studied by X-ray and selected-area elec-tron diffraction (XRD, SAED). The substructure of CaBi may be described with a four-layer monoclinic subcell with a...
Ca-Rectorite from Sano Mine, Nagano Prefecture, Japan
2:1 Layer Silicate Margarite Rectorite Regular Interstratification Smectite/Brittle Mica
2011/12/22
Abstract: Rectorites containing various amounts of Ca were found at the Sano Mine, Nagano Prefecture, Japan. The Ca content in nonexchangeable form varied from 1.0 to 3.9% CaO. With more than 3.4%, th...
Intersite partitioning of Mg and Fe in Ca-free high-pressure C2/c clinopyroxene
Mg Fe Ca-free high-pressure C2/c clinopyroxene
2012/4/6
TheintracrystallinedistributionofMgandFe ontheM1andM2octahedralsitesinhigh-PC2/c (Mg,Fe)SiOclinopyroxenehasbeendeterminedonquenchedsamplesusing
FeMo!§ssbauerspectroscopy.Althoughtherecoveredsamplesth...
A hydrous Ca-bearing magnesium carbonate from playa lake sediments, Salines Lake, Spain
A hydrous Ca-bearing magnesium carbonate from playa lake sediments Salines Lake Spain
2012/4/5
edimentsofplayaLakeSalines,SE,Spain,containacarbonatemineralcharacterizedbyXraydiffractionpeaksverysimilarto,butsystematicallyshiftedfromthoseofpuremagnesite.Analyses(SEM,IRandRamanspectroscopy,DTA,TG...
Sorption of Atrazine by Al- and Ca-Saturated Smectite
Cation-Polarization Nonionic Organics Smectite Surface-Hydrophobicity
2011/12/9
Abstract: Because of the large surface area and common occurrence of smectites in the clay fractions, they are important in sorption/desorption reactions of organic pollutants entering soils and sedim...