نتایج جستجو برای: organic aqueous solution

تعداد نتایج: 705663  

Journal: :Journal of controlled release : official journal of the Controlled Release Society 2017
Fei Wu Lili Dai Lee Geng Hua Zhu Tuo Jin

Using recombinant human granulocyte-macrophage colony-stimulating factor (rhGM-CSF) as a model drug, the present study demonstrated a practically feasible process to produce polymeric microspheres for sustained-release delivery of protein drugs with preserved integrity. This process is featured with pre-loading proteins into polysaccharide fine particles via a self-standing aqueous-aqueous "emu...

Journal: :journal of the iranian chemical research 0
majid ramezani department of chemistry, faculty of science, islamic azad university – arak branch, arak, iran sara rahmani department of chemistry, faculty of science, islamic azad university – arak branch, arak, iran

an efficient, rapid, simple, and highly selective dispersive liquid–liquid microextraction basedon solidification of floating organic drop (dllme-sfod), combined with flame atomicabsorption spectrometry was developed for preconcentration and determination of trace amountsof cobalt in water samples. in this method, an appropriate mixture of acetone and1-undecanol was injected rapidly into the aq...

Journal: :Journal of controlled release : official journal of the Controlled Release Society 2003
Yoon Yeo Osman A Basaran Kinam Park

A new microencapsulation technique that utilizes interfacial mass transfer between two mutually soluble liquids has been developed. The technique is based on formation of a solid polymer film at the interface of a solution of a water-insoluble polymer and an aqueous solution, resulting from the mutual mass transfer of solvents (i.e., solvent exchange). Reservoir-type microcapsules were prepared...

Journal: :Environmental science & technology 2016
Daniel A Thomas Matthew M Coggon Hanna Lignell Katherine A Schilling Xuan Zhang Rebecca H Schwantes Richard C Flagan John H Seinfeld J L Beauchamp

The complexation of iron(III) with oxalic acid in aqueous solution yields a strongly absorbing chromophore that undergoes efficient photodissociation to give iron(II) and the carbon dioxide anion radical. Importantly, iron(III) oxalate complexes absorb near-UV radiation (λ > 350 nm), providing a potentially powerful source of oxidants in aqueous tropospheric chemistry. Although this photochemic...

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