malonic acid/zubný kaz

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Studies of single aerosol particles containing malonic acid, glutaric acid, and their mixtures with sodium chloride. II. Liquid-state vapor pressures of the acids.

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The vapor pressures of two dicarboxylic acids, malonic acid and glutaric acid, are determined by the measurement of the evaporation rate of the dicarboxylic acids from single levitated particles. Two laboratory methods were used to isolate single particles, an electrodynamic balance and optical

Certain carboxylic acid buffers can destabilize β-cyclodextrin complexes by competitive interaction

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Thirteen buffers were investigated for their effect on the binding of adamantanol to β-cyclodextrin and hydroxypropyl-β-cyclodextrin. Stability constants for the β-cyclodextrin complex ranged from 14,800 to 46,000 M^-1, and the binding enthalpies were between -23.2 and -10.4 kJ/mole.

Iron-Strapped Porphyrins with Carboxylic Acid Groups Hanging over the Coordination Site: Synthesis, X-ray Characterization, and Dioxygen Binding.

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A series of myoglobin active site analogues were synthesized and characterized to investigate the dioxygen binding effects of a flexible distal strap over the coordination site. These four synthetic models differ mostly by the shape and polarity of their cavities and also possibly by motion of the

Self-Assembled Cage-like Receptor that Binds Biologically Relevant Dicarboxylic Acids via Proton Coupled Anion Recognition.

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We report here a fully organic, self-assembled dimeric receptor, constructed from acyclic naphthyridylpolypyrrolic building block. The cage-like dimer is stable in the solid state, in solution, and in gas phase, as inferred from X-ray diffraction, and spectroscopic analyses. This system acts as a

Why does vacuum drive to the loading of halloysite nanotubes? The key role of water confinement.

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The filling of halloysite nanotubes with active compounds solubilized in aqueous solvent was investigated theoretically and experimentally. Based on Knudsen thermogravimetric data, we demonstrated the water confinement within the cavity of halloysite. This process is crucial to properly describe the

Heterogeneous reaction of gaseous ozone with aqueous iodide in the presence of aqueous organic species.

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The fast reaction of gaseous ozone, O(3)(g), with aqueous iodide, I(-)(aq), was found to be affected by environmentally relevant cosolutes in experiments using cavity ring-down spectroscopy (CRDS) and electrospray ionization mass spectrometry (ESIMS) for the detection of gaseous and interfacial

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Herbal & Natural Medicine

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