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Items from 1 to 20 out of 6,720 results

article

Experimental and thermodynamic modeling study of the solid-liquid equilibrium in the ternary system (NaCl + NaClO3 + H2O) at 293.15 and 333.15 K and 0.1 MPa

Wanjing Cui, Xuebing Fan, Ying Liao, Xiaoping Yu, more

The Journal of Chemical Thermodynamics > 2018 > 126 > C > 99-104

The study of the solid-liquid phase equilibrium for (NaCl + NaClO₃ + H₂O) system is of significance to understand the thermodynamic property of the aqueous solution of ionic membrane electrolysis process to promote the production of sodium hydroxide (caustic soda). The solubilities and the physicochemical properties including density, refractive index and pH for this ternary system at 293.15 and 333...

article

Improved bioavailability of vitamin D3 using a β-lactoglobulin-based coagulum

Fatoumata Diarrassouba, Ghislain Garrait, Gabriel Remondetto, Pedro Alvarez, more

Food Chemistry > 2015 > 172 > Complete > 361-367

Vitamin D ₃ (D ₃ ) was encapsulated within a water-soluble matrix, formed by promoting the βlg/D ₃ complex by acidification. The capacity of the βlg-based coagulum to increase the long term stability of D ₃ in cold storage, upon exposure to intensive UV-light, and in the presence and absence of intestinal proteases, was evaluated. Additionally, the impact of the sequestration...

article

Effects of fluorine on the solubilities of Nb, Ta, Zr and Hf minerals in highly fluxed water-saturated haplogranitic melts

Abdullah A. Aseri, Robert L. Linnen, Xu Dong Che, Yves Thibault, more

Ore Geology Reviews > 2015 > 64 > Complete > 736-746

The effect of fluorine on the solubilities of Mn-columbite (MnNb ₂ O ₆ ), Mn-tantalite (MnTa ₂ O ₆ ), zircon (ZrSiO ₄ ) and hafnon (HfSiO ₄ ) were determined in highly fluxed, water-saturated haplogranitic melts at 800 to 1000 ^o C and 2kbar. The melt composition corresponds to the intersection of the granite minimum with the albite-orthoclase...

article

Compositional and pressure effects on the solubility of H2O and CO2 in mafic melts

Tatiana A. Shishkina, Roman E. Botcharnikov, Francois Holtz, Renat R. Almeev, more

Chemical Geology > 2014 > 388 > Complete > 112-129

The effect of the anhydrous composition on the solubilities of H ₂ O and CO ₂ in mafic melts varying from MORB to nephelinite was investigated experimentally between 50 and 500MPa at 1200 to 1250 ^o C. In all compositions, CO ₂ is only present as carbonate species in the quenched glasses. The concentrations of dissolved H ₂ O and CO ₂ have been analyzed...

article

Driving forces for the weathering and alteration of silica in the regolith: Implications for studies of prehistoric flint tools

Médard Thiry, Paul Fernandes, Anthony Milnes, Jean-Paul Raynal, more

Earth-Science Reviews > 2014 > 136 > Complete > 141-154

A range of geochemical and mineralogical factors trigger the weathering and influence the stability of various silica phases under near-surface temperatures and pressures. Based on the current knowledge of the crystallochemical basis of silica behaviour in near-surface environments, the mineralogical and petrographical transformations of silica under weathering conditions in the regolith are reviewed...

article

Chloride partitioning and solubility in hydrous phonolites from Erebus volcano: A contribution towards a multi-component degassing model

Marina Alletti, Alain Burgisser, Bruno Scaillet, Clive Oppenheimer, more

GeoResJ > 2014 > 3-4 > Complete > 27-45

We present results from a series of experiments on the partitioning of chlorine between a hydrous fluid phase and a phonolitic melt that we then use to model specific aspects of volcanic degassing. Experiments were performed from 250 to 10MPa on a phonolite from Erebus lava lake, Antarctica, at 1000°C near the QFM solid buffer. Only one of 48 experimental samples shows coexistence of low-density vapour...

article

Efficient mobilization and fractionation of rare-earth elements by aqueous fluids upon slab dehydration

A. Tsay, Z. Zajacz, C. Sanchez-Valle, A. Tsay, more

Earth and Planetary Science Letters > 2014 > 398 > Complete > 101-112

The characteristic REE fractionation pattern in arc magmas compared to MOR-basalts results from the selective mobilization of light rare-earth elements (LREE) by slab-derived mobile components. However, the nature and composition of the slab flux, and the actual mechanisms responsible for the transfer of rare-earth elements (REE) from the slab to the mantle wedge remain unclear. We present experimental...

article

Hydrogen permeability of a barium-aluminoborosilicate glass—A methodical approach

P. Ried, M. Gaber, R. Müller, J. Deubener, more

Journal of Non-Crystalline Solids > 2014 > 394-395 > Complete > 43-49

The H ₂ effusion from H ₂ saturated glass powders, H ₂ permeation through the wall of blown glass bulbs, and H ₂ permeation through the wall of glass capillaries were applied to evaluate the permeability of hydrogen gas in a barium-aluminoborosilicate (BABS) glass. To validate these methods, two commercial glasses (vitreous silica and borosilicate) were used as a reference...

article

Interstitial sites for He incorporation in nuclear glasses and links to the structure: Results from numerical investigation

Ali Kerrache, Jean-Marc Delaye, A. Kerrache, J.M. Delaye

Nuclear Inst. and Methods in Physics Research, B > 2014 > 326 > Complete > 269-272

To investigate rare gases incorporation in glasses in relation with nuclear waste confinement, a wide range of borosilicate glasses have been studied by means of molecular dynamics simulations. The rare gases solubility is related to the number of interstitial sites accessible for these gases. To elucidate any relation between the number of interstitial sites and the glass composition, a large set...

article

Determination of carbon dioxide solubility in polylactide acid with accurate PVT properties

S.H. Mahmood, M. Keshtkar, C.B. Park

The Journal of Chemical Thermodynamics > 2014 > 70 > C > 13-23

The solubility of CO₂ in polylactide acid (PLA) and the pressure–volume–temperature (PVT) behavior of PLA were investigated using a magnetic suspension balance (MSB) and an in-house visualization device. Experiments were carried out at temperatures ranging from (453 to 473)K, and the pressure was varied from (6.89 to 20.68)MPa. The results indicated that as the temperature increased, the swelling...

article

Pacific Ocean aerosols: Deposition and solubility of iron, aluminum, and other trace elements

Clifton S. Buck, William M. Landing, Joseph Resing, C.S. Buck, more

Marine Chemistry > 2013 > 157 > Complete > 117-130

The deposition of aerosols to the open ocean and the mechanisms controlling trace element solubility are important factors in the biogeochemical cycling of biolimiting elements, including iron, with implications for the global carbon cycle. During 2004–2006, 24-hour integrated aerosol samples were collected on two Climate Variability and Predictability (CLIVAR)-CO ₂ Repeat Hydrography cruises...

article

Modeling the solubility of light reservoir components, HCFCs and HFCs in water using the CPA and sPC-SAFT equations of state

Mostafa Abolala, Farshad Varaminian, M. Abolala, F. Varaminian

Journal of Molecular Liquids > 2013 > 187 > Complete > 359-367

The solubility of light reservoir components, HCFCs and HFCs containing methane, ethane, propane, n-butane, i-butane, carbon dioxide, nitrogen, hydrogen sulfide, chlorodifluoromethane (R22), trifluoromethane (R23), difluoromethane (R32), 1,1,1,2,2-pentafluoroethane (R125), 1,1,1,2-tetrafluoroethane (R134a) and 1,1-difluoroethane (R152a) in water was modeled. The cubic-plus-association equation of...

article

Octanoyl-6-O-ascorbic acid: an efficient antioxidant with potent solubilising properties The case of active constituents from Saint John’s wort

M.C. Bergonzi, B. Isacchi, A.R. Bilia, M.C. Bergonzi, more

Journal of Drug Delivery Science and Technology > 2013 > 23 > 5 > 505-509

This paper describes the use of octanoyl-6-O-ascorbic acid to protect all the characteristic constituents of Saint John’s wort (Hypericum perforatum L.) from oxidation processes. Given the intrinsic ability of octanoyl-6-O-ascorbic acid to form micelles, aqueous solubility of the constituents has also been increased. Thermal and photostability of SJW commercial dried extract in the presence of octanoyl-6-O-ascorbic...

article

The effects of water-soluble polymers on cyclodextrins and cyclodextrin solubilization of drugs

T. Loftsson, M. Masson, T. Loftsson, M. Masson

Journal of Drug Delivery Science and Technology > 2004 > 14 > 1 > 35-43

For a variety of reasons, including cost, formulation bulk and toxicology, the amounts of cyclodextrin (CD) that can be included in drug formulations is limited. This is further complicated by the fact that the complexation efficacy of CDs is, in general, very low and their molecular weight is rather high. Here we review studies which have shown that complexation efficacy of CDs can be significantly...

article

Solubility of carbon dioxide and ethane in Lloydminster heavy oil: Experimental study and modelling

Rajkumar Ganapathi, Amr Henni, Ezeddin Shirif

The Canadian Journal of Chemical Engineering > 100 > 6 > 1235 - 1243

Heavy oil reserves in the world represent 5.5 trillion barrels, which are equivalent to five times the conventional crude oil reserves. Heavy oil reserves will be the main petroleum source for the world's future demand for energy. To enhance the recovery of heavy oil/bitumen, solvent‐based recovery seems to be one of the most promising alternatives to costly thermal methods. Phase behaviour studies...

article

Insoluble Naphthoquinone‐Derived Molecular Cathode for High‐Performance Lithium Organic Battery

Bowen Zhao, Yubing Si, Wei Guo, Yongzhu Fu

Advanced Functional Materials > 32 > 19 > n/a - n/a

Organic electrode materials have attracted significant attention for rechargeable lithium organic batteries owing to the anticipated electrochemical property and environmentally friendly features. Benzoquinone and naphthoquinone as the simplest quinone substances have been considered as promising cathode materials because of their high theoretical specific capacities and discharge voltages. However,...

article

Nanocomposite Starch Films: A New Approach for Biodegradable Packaging Materials

Prafull Chavan, Archana Sinhmar, Somesh Sharma, Alain Dufresne, more

Starch ‐ Stärke > 74 > 5-6 > n/a - n/a

The growing interest in nano‐starch materials offers the opportunity to develop biomaterials for distinctive use in food, medicine, cosmetics, and other fields. The conceptual framework about the various changes in the properties of starch‐based films after incorporation of nano starch particles are reported. Starch‐based packaging films have not been widely used in the packaging industry, mainly...

article

Predicting the Solubility of Inorganic Ion Pairs in Water

Tasnim Rahman, Enric Petrus, Mireia Segado, Nicolas P. Martin, more

Angewandte Chemie > 134 > 19 > n/a - n/a

Polyoxometalates (POMs), ranging in size from 1 to 10’s of nanometers, resemble building blocks of inorganic materials. Elucidating their complex solubility behavior with alkali‐counterions can inform natural and synthetic aqueous processes. In the study of POMs ([Nb₂₄O₇₂H₉]¹⁵⁻, Nb₂₄) we discovered an unusual solubility trend (termed anomalous solubility) of alkali‐POMs, in which Nb₂₄ is most soluble...

article

Predicting the Solubility of Inorganic Ion Pairs in Water

Tasnim Rahman, Enric Petrus, Mireia Segado, Nicolas P. Martin, more

Angewandte Chemie International Edition > 61 > 19 > n/a - n/a

article

Mechanisms of molecular and structural interactions between lentil and quinoa proteins in aqueous solutions induced by pH recycling

Mohammad Alrosan, Thuan‐Chew Tan, Azhar Mat Easa, Sana Gammoh, more

International Journal of Food Science & Technology > 57 > 4 > 2039 - 2050

There has been a growing interest in plant proteins due to their beneficial health effects, low cost and variety of applications in food industries. The low solubility of lentil proteins (LPs) is one of the significant factors that limit their use in food applications. Quinoa proteins (QPs), which have high water solubility, were combined with LPs at pH 12 to generate LP‐QP complexes to generate pH‐based...

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Search results

Experimental and thermodynamic modeling study of the solid-liquid equilibrium in the ternary system (NaCl + NaClO3 + H2O) at 293.15 and 333.15 K and 0.1 MPa

Improved bioavailability of vitamin D3 using a β-lactoglobulin-based coagulum

Effects of fluorine on the solubilities of Nb, Ta, Zr and Hf minerals in highly fluxed water-saturated haplogranitic melts

Compositional and pressure effects on the solubility of H2O and CO2 in mafic melts

Driving forces for the weathering and alteration of silica in the regolith: Implications for studies of prehistoric flint tools

Chloride partitioning and solubility in hydrous phonolites from Erebus volcano: A contribution towards a multi-component degassing model

Efficient mobilization and fractionation of rare-earth elements by aqueous fluids upon slab dehydration

Hydrogen permeability of a barium-aluminoborosilicate glass—A methodical approach

Interstitial sites for He incorporation in nuclear glasses and links to the structure: Results from numerical investigation

Determination of carbon dioxide solubility in polylactide acid with accurate PVT properties

Pacific Ocean aerosols: Deposition and solubility of iron, aluminum, and other trace elements

Modeling the solubility of light reservoir components, HCFCs and HFCs in water using the CPA and sPC-SAFT equations of state

Octanoyl-6-O-ascorbic acid: an efficient antioxidant with potent solubilising properties The case of active constituents from Saint John’s wort

The effects of water-soluble polymers on cyclodextrins and cyclodextrin solubilization of drugs

Solubility of carbon dioxide and ethane in Lloydminster heavy oil: Experimental study and modelling

Insoluble Naphthoquinone‐Derived Molecular Cathode for High‐Performance Lithium Organic Battery

Nanocomposite Starch Films: A New Approach for Biodegradable Packaging Materials

Predicting the Solubility of Inorganic Ion Pairs in Water

Predicting the Solubility of Inorganic Ion Pairs in Water

Mechanisms of molecular and structural interactions between lentil and quinoa proteins in aqueous solutions induced by pH recycling

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