نتایج جستجو برای: dissolution mechanism

تعداد نتایج: 584612  

2003
ANTONIO AZOR DAVID J. MARTINEZ POYATOS

-Elongated shapes of garnets in high-grade metamorphic rocks have been explained as a result of plastic crystal flow or anisotropic growth. In the case of lowto medium-grade metamorphic rocks, a satisfactory explanation has not been proposed yet for elongated garnets. We have studied elongated garnets grown under lowgrade metamorphic conditions in a shear zone with a composite planar-linear fab...

Journal: :Jornal de pediatria 2016
Diogo Lamela Bárbara Figueiredo

OBJECTIVE Research has shown that coparenting is a vital family mechanism in predicting mental health in children and adolescents. Considering the increasing prevalence of marital dissolution in Western societies, the objective of this systematic review was to summarize the key results of empirical studies that tested the association between mental health of children and coparenting after marit...

2017
Sebastian B. Mueller Paul M. Ayris Fabian B. Wadsworth Ulrich Kueppers Ana S. Casas Pierre Delmelle Jacopo Taddeucci Michael Jacob Donald B. Dingwell

Interactions with volcanic gases in eruption plumes produce soluble salt deposits on the surface of volcanic ash. While it has been postulated that saturation-driven precipitation of salts following the dissolution of ash surfaces by condensed acidic liquids is a primary mechanism of salt formation during an eruption, it is only recently that this mechanism has been subjected to detailed study....

Journal: :Drug Delivery 2009
Nahla S. Barakat Ibrahim M. Elbagory Alanood S. Almurshedi

The objective of this study was to investigate the effect of lipophilic (Compritol 888 ATO) and hydrophilic components (combination of HPMC and Avicel) on the release of carbamazepine from granules and corresponding tablet. Wet granulation followed by compression was employed for preparation of granules and tablets. The matrix swelling behavior was investigated. The dissolution profiles of each...

2013
Ravish Majithia Jeffrey Speich Kenith E. Meissner

In this report, a technique for rapid synthesis of ZnO microstructures by microwave-assisted heating of precursors at hydrothermal conditions is demonstrated. Further, the reaction mechanism for the growth of ZnO microstructures is analyzed. An accelerated rate of reaction obtained using microwaves enables a dissolution-recrystallization mechanism for generation of one dimensional (1D) rod-like...

Journal: :Applied sciences 2022

Seismic wave attenuation is affected by wave-induced pore fluid dissolution. The mechanism of dissolution the mutual between different fluids caused pressure. Compared with traditional WIFF (wave-induced flow) mechanism, can predict seismic frequency band and be used in well-to-seismic calibration. Conventional methods neglect velocity dispersion interaction fluids, which will lead to errors pr...

Aim: The objective of this work was to study the effects of formulation variables on the release kinetics of paracetamol tablet formulation. Materials and Methods: Paracetamol tablets were formulated using wet granulation (WG) and direct compression (DC) using two predetermined pressures. Avicel, dicalcium phosphate (DCP) and pregelatinized starch (PGS) were used as directly compressible...

A. Kazemzadeh B. Arfaei M. Amin, N. Saha-Chaudhury V. Sahajwalla

In this study, slag penetration into a magnesia refractory monolithic was investigated by the crucible test method. A synthetic calcium aluminate slag system has been used to study commercial magnesia mix refractory for 1, 2, 3, 4, 5 and 6 hours at 1450°C and 1600°C. It has been shown that the penetration rate is controlled by a diffusion mechanism at 1450°C. In this case, capillaries are the ...

Journal: :Frontiers in Marine Science 2023

Most experiments show that gas hydrates are often enriched in C 2+ gases relative to the feeding source because of fractionation during hydrate crystallization directly from free and dissolved gases. However, sediments below near base stability zone (BGHSZ) many ocean drilling program (ODP)/International Ocean Discovery Program (IODP) sites relatively hydrocarbon gases, compared with hydrate-oc...

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