搜索结果: 1-15 共查到“理学 Dissolution”相关记录59条 . 查询时间(0.13 秒)
Atmospheric dissolved iron deposition to the global oceans: effects of oxalate-promoted Fe dissolution, photochemical redox cycling, and dust mineralogy
global oceans oxalate-promoted Fe dissolution
2014/12/12
Mineral dust deposition is suggested to be a significant atmospheric supply pathway of bioavailable iron
(Fe) to Fe-depleted surface oceans.
Molecular-level mechanisms of quartz dissolution under neutral and alkaline conditions in the presence of electrolytes
quartz dissolution molecular-level mechanisms electrolytes pH conditions quantum chemistry calculation
2017/4/11
The mechanisms of quartz dissolution are affected intricately by pH conditions and electrolyte types. Most previous
studies have focused on the mechanisms of quartz dissolution under one specific con...
Determination of boron and fluoride sources in groundwater: Batch dissolution of carbonate rocks in water
boron fluoride carbonate rock water-rock interaction batch dissolution
2017/4/11
High natural fluoride (up to 6.1 mg/l) and boron (up to 2.1 mg/l) concentrations in groundwater are recorded in western
Estonia, where a carbonaceous Silurian–Ordovician aquifer system is the main so...
Elemental dissolution of basalts with ultra-pure water at 340°C and 40 MPa in a newly developed flow-type hydrothermal apparatus
hydrothermal system water–basalt reaction elemental dissolution flow-type experiment sub-terrestrial microbial ecosystem
2017/4/11
To simulate the discharge zone of hydrothermal systems in the laboratory, we developed a flow-type hydrothermal
apparatus that can reproduce water–rock reactions at elevated temperatures and pressure...
Reactive-infiltration instabilities in rocks. Fracture dissolution
Reactive-infiltration instabilities rocks Fracture dissolution Fluid Dynamics
2012/4/19
A reactive fluid dissolving the surface of a uniform fracture will trigger an instability in the dissolution front, leading to spontaneous formation of pronounced well-spaced channels in the surroundi...
Dissolution of clay sediments in acid-sulfate systems
Dissolution clay sediments acid-sulfate systems
2012/3/30
Significant quantities of sulfidic sediments have been reported to have recently accumulated in inland wetlands of Murray Darling Basin due to a combination of long periods of inundation and the entra...
Dissolution processes of elements from subducting sediments into fluids: Evidence from the chemical composition of the Sanbagawa pelitic schists
element mobility subduction zones pelitic schists
2017/4/12
In order to evaluate the dissolution processes of elements from subducting sediments into fluids during early stages of
metamorphism (up to oligoclase–biotite zone at about 30 km depth), the chemical...
Iron dissolution kinetics of mineral dust at low pH during simulated atmospheric processing
mineral dust low pH simulated atmospheric processing
2011/2/25
We investigated the iron (Fe) dissolution kinetics of African (Tibesti) and Asian (Beijing) dust samples at acidic pH with the aim of reproducing the low pH conditions in atmospheric aerosols. The Bei...
Production, dissolution, accumulation, and potential export of biogenic silica in a Sargasso Sea mode-water eddy
Production dissolution accumulation
2014/4/16
Rates of biogenic silica (bSiO2) production, dissolution, accumulation, and potential bSiO2 export were
determined in a Sargasso Sea mode-water eddy (MWE) during two occupations in April 2007. Standi...
Desferrioxamine-B adsorption to and iron dissolution from palygorskite and sepiolite
DFOB Siderophore Fibrous clays Weathering Kinetic Isotherm
2011/11/4
Dissolution weathering of minerals can be greatly affected by the presence of siderophores and their adsorption in soil environments. In this research, adsorption equilibria and kinetics of desferriox...
Application of Oxybutynin Selective Sensors for Monitoring the Dissolution Profile and Assay of Pharmaceutical Dosage Forms
Oxybutynin Selective Sensors Monitoring the Dissolution Profile Assay of Pharmaceutical Dosage Forms
2010/9/20
Two ion-selective sensors of the plastic membrane type were prepared for the determination of oxybutynin hydrochloride (OxCl). They depend on the incorporation of the ion-associates with phosphotunges...
Death by dissolution: Sediment saturation state as a mortality factor for juvenile bivalves
Sediment saturation state juvenile bivalves
2014/4/18
We show that death by dissolution is an important size-dependent mortality factor for juvenile bivalves.
Utilizing a new experimental design, we were able to replicate saturation states in sediments ...
Phosphorus release with carbonate dissolution coupled to sulfide oxidation in Florida Bay seagrass sediments
Phosphorus release carbonate dissolution
2014/4/17
We hypothesized that CaCO3 dissolution, coupled to sulfide oxidation, is an important mechanism by which
solid-phase inorganic P (iP) becomes available to seagrass in tropical carbonate sediments. To...
Shallow water dissolution of settling calcite at Station ALOHA
settling calcite Station ALOHA
2014/4/17
The dissolution of settling calcite at the Hawaii Ocean Time-Series Sta. ALOHA in the North Pacific is
examined using a calculation of the calcite saturation state based on 5 yr of alkalinity measure...
Modeling the marine aragonite cycle:changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution
marine aragonite cycle changes carbon dioxide shallow water CaCO3 dissolution
2010/1/18
The marine aragonite cycle has been included in the global biogeochemical model PISCES to study the role of aragonite in shallow water CaCO3 dissolution. Aragonite production is parameterized as a fun...