Hyaluronate Depolymerization Following Thermal Decomposition of Oxytetracycline.

The thermal depolymerization of porcine submaxillary mucin.

The time dependence of the molecular weight, radius of gyration, and hydrodynamic size distribution for porcine submaxillary mucin (PSM) in solution have been studied using static and dynamic light scattering. The weight average molecular weight (Mw) of PSM in 6 M guanidine HCl, pH 7, is initially 3 X 10(6) and decreases with time in three phases: rapidly from 3-2 X 10(6), less rapidly from 2-0...

The effects of inorganic ions on radiolytic decomposition of oxytetracycline

The radiolytic decomposition of oxytetracycline and effects of inorganic ions were studied. The removal efficiency of oxytetracycline , 30 mg/L, was 99% at the irradiation dose of 0.7 kGy. Chloride , sulfate , nitrite , nitrate and phosphate had effects on oxytetracycline degradation. Especially , nitrite and nitrate showed the significant inhibition effect on the radiolytic degradation of oxyt...

Thermal Decomposition of Coal

Thermal stability and thermal decomposition of sucralose

Several papers have been described on the thermal stability of the sweetener, C12H19Cl3O8 (Sucralose). Nevertheless no study using thermoanalytical techniques was found in the literature. Simultaneous thermogravimetry and differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC) and infrared spectroscopy, have been used to study the thermal stability and thermal decomposit...

The Role of Boron in Thermal Decomposition of Ammonium Perchlorate

Simultaneous thermal analysis (STA) method has been applied to study decomposition reactions of AP under a flowing nitrogen atmosphere and static air. Results obtained indicate that a phase transformation occurs prior to the decomposition reaction. Decomposition takes place exothermally in two stages, first stage of decomposition could be suppressed by the controlled heating programme. Addi...