Results 61 to 70 of about 409 (199)

Determinação do coeficiente de distribuição (Kd) de benzo(a)pireno em solo por isotermas de sorção Determination of the distribution coefficient (kd) of benzo(a)pyrene in soil using sorption isotherms

open access: yesQuímica Nova, 2006
Leaking of diesel oil from gas stations is frequent in Brazil. The presence of polycyclic aromatic hydrocarbons (PAHs), which are highly toxic is an indication of contamination by heavy hydrocarbons from diesel oil. Here were present the determination of
Adriana D'Agostinho, Marlene Flues
doaj   +1 more source

Solubility of Sildenafil Citrate in Polyethylene Glycol 200 + Water Mixtures at 293.2-313.2 K [PDF]

open access: yesPharmaceutical Sciences
Background: In the current investigation, the evaluation of model congruence alongside experimental determinations of the solid-liquid phase boundary concerning sildenafil citrate within aqueous binary blends of polyethylene glycol 200 has been conducted.
Homa Rezaei, Abolghasem Jouyban
doaj   +1 more source

THERMODYNAMIC STUDY OF THE SOLUBILITY OF SODIUM SULFADIAZINE IN SOME ETHANOL + WATER COSOLVENT MIXTURES

open access: yesVitae, 2010
Sodium sulfadiazine (SD-Na) is a drug extensively used for the treatment of certain infections caused by several kinds of microorganisms. Although SD-Na is widely used nowadays in therapeutics, the physicochemical information about their aqueous ...
Daniel R. DELGADO, Fleming MARTÍNEZ R.
doaj  

Dissolution Thermodynamics and Preferential Solvation of Phenothiazine in Some Aqueous Cosolvent Systems

open access: yesLiquids
Published equilibrium mole fraction solubilities of phenothiazine in ethanol, propylene glycol and water as mono-solvents at several temperatures were investigated to find standard apparent thermodynamic quantities of dissolution mixing and solvation ...
Fleming Martínez   +2 more
doaj   +1 more source

Design of weakly cationic alco-cryogels consisting of poly(alkylmethacrylates)-based sulfonated terpolymer network with tunable multiresponsive assembly

open access: yesPolymer Testing, 2021
Cryogels with ion-, and solvent-responsiveness have been designed by cryogelation of 2-(diethylamino)ethyl methacrylate (DEAEMA) as weakly cationic monomer, hydroxyethyl methacrylate as neutral comonomer and 2-acrylamido-2-methyl-1-propanesulfonic acid ...
Nur Sena Okten Besli̇, Nermin Orakdogen
doaj   +1 more source

THERMODYNAMICS OF THE MIXING PROCESS OF SEVERAL SODIUM SULFONAMIDES IN ETHANOL + WATER COSOLVENT MIXTURES

open access: yesVitae, 2011
Sodium sulfonamides have been extensively used for the treatment of certain infections caused by several types of microorganisms. Although sulfonamides are still widely used in therapeutics, the physicochemical information about their aqueous solutions ...
Daniel R. DELGADO   +2 more
doaj  

Solution Thermodynamics of Isoniazid in PEG 400 + Water Cosolvent Mixtures

open access: yesLiquids
Solubility studies are an essential requirement for the development of more efficient industrial processes. In this context, the use of cosolvents is a relevant strategy in pharmaceutical sciences, especially when dealing with green solvents such as ...
Diego Ivan Caviedes-Rubio   +4 more
doaj   +1 more source

THERMODYNAMIC STUDY OF THE SOLUBILITY OF SODIUM SULFADIAZINE IN SOME ETHANOL + WATER COSOLVENT MIXTURES ESTUDIO TERMODINÁMICO DE LA SOLUBILIDAD DE LA SULFADIAZINA SÓDICA EN ALGUNAS MEZCLAS COSOLVENTES ETANOL + AGUA

open access: yesVitae, 2010
Sodium sulfadiazine (SD-Na) is a drug extensively used for the treatment of certain infections caused by several kinds of microorganisms. Although SD-Na is widely used nowadays in therapeutics, the physicochemical information about their aqueous ...
Daniel R DELGADO, Fleming MARTÍNEZ R
doaj  

THERMODYNAMICS OF THE MIXING PROCESS OF SEVERAL SODIUM SULFONAMIDES IN ETHANOL + WATER COSOLVENT MIXTURES ESTUDIO TERMODINÁMICO DEL PROCESO DE MEZCLA DE ALGUNAS SULFONAMIDAS SÓDICAS EN MEZCLAS COSOLVENTES ETANOL + AGUA

open access: yesVitae, 2011
Sodium sulfonamides have been extensively used for the treatment of certain infections caused by several types of microorganisms. Although sulfonamides are still widely used in therapeutics, the physicochemical information about their aqueous solutions ...
Daniel R DELGADO   +2 more
doaj  

Experimental, Modeling and Molecular Dynamics Simulation of Codeine Phosphate Dissolution in N-Methyl-2-pyrrolidone + Ethanol [PDF]

open access: yesPharmaceutical Sciences
Background: There is only limited data for solubility of codeine phosphate in binary systems available, which comes with uncertainties about the prediction accuracy of common thermodynamic models.
Homa Rezaei   +4 more
doaj   +1 more source

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