Using the glucose and L-glutamic-acid to prepare the standard substance according to the ratio of 1：1, and the artificial seawater and the standard substance to prepare a series of standard solutions, the distributio...Using the glucose and L-glutamic-acid to prepare the standard substance according to the ratio of 1：1, and the artificial seawater and the standard substance to prepare a series of standard solutions, the distribution pattern of uncertainty in measurement of seawater COD is obtained based on the measured results of the series of standard solutions by the potassium iodide-alkaline potassium permanganate determination method. The distribution pattern is as follows： Uncertainty in measurement is big and not constant at the high end, but small and constant at the low end.展开更多
Sodium erythorbate, antioxidant and curing accelerator, used in meat products, have no vitamin functionality. Ascorbic acid （AA）, in contrast, is a powerful antioxidant, but very unstable. The application of encapsu...Sodium erythorbate, antioxidant and curing accelerator, used in meat products, have no vitamin functionality. Ascorbic acid （AA）, in contrast, is a powerful antioxidant, but very unstable. The application of encapsulated AA in frankfurters could allow the incorporation of an antioxidant with vitamin functionality and improved stability. The aim of this study was to evaluate the application ofAA microcapsules in frankfurters and the effects of their application on the product. Different analyses were conducted. The values obtained for mass loss, moisture content, water activity, pH and instrumental color were not significantly different among the treatments. The frankfurters containing the microcapsutes exhibited the lowest hardness value （approximately 5,000 g）, resulting in better scores in the sensory analysis. It was possible to apply the AA microcapsules without compromising the oxidative stability and physicochemical characteristics of the product, providing a promising method for protecting AA and producing fortified frankfurters.展开更多
The effects of nitrate concentration in the main anoxic zone on denitrifying dephosphatation capability were conducted based on modified University of Cape Town （MUCT） process. Meanwhile the relation between optimal...The effects of nitrate concentration in the main anoxic zone on denitrifying dephosphatation capability were conducted based on modified University of Cape Town （MUCT） process. Meanwhile the relation between optimal nitrate concentration （Nopt） and influent C/N ratio was evaluated, in which the influont chemical oxygen demand （COD） concentration was stabilized at （2905：10）mg/L, the influent total phosphorus （TP） concentration was stabilized at （7.0±0. 5）mg/L. The results indicated that： （1） the nitrate concentration in the main anoxic zone had an effect on denitrifying dephosphatation capability, and the average percentages of anoxic phosphorus uptake in total phosphorus uptake （ηa） increased with nitrate cancentration increasing, i.e., increasing from 62.1% at2.0 mg/L to63.7%, 65.6%, 68.1%, and 72.3% at 2.2, 2.4, 2.6 and 2.8mg/L, respectively; （2） the Nopt as function of influent C/N ratio could be calculated by the equation： y = 0.67x^2-7.79x ＋ 22. 21; the maximum percentages of anoxic phosphorus uptake in total phosphorus uptake （ηa,max） as function of the Nopt could be calculated by the equation： y=0.77-0.33e^-（x/1.52）. The Nopt was the important control parameter that must be optimized for operation of conveational biological nutrieat removal activated sludge （BNRAS） system.展开更多
Magnetic and relativistic effects in uranium catalysts, the movement of charged particles under the effect of a uniform electric field and uniform magnetic field were studied in the paper. We have considered various m...Magnetic and relativistic effects in uranium catalysts, the movement of charged particles under the effect of a uniform electric field and uniform magnetic field were studied in the paper. We have considered various mechanisms oscillating reactions （Models Jabotinsky-Korzukhina, Brusselator, Oregonator and Advanced Oregonator）. The mechanisms of the motion of charged particles under the influence of an electric field and a uniform magnetic field were proposed.展开更多
文摘Using the glucose and L-glutamic-acid to prepare the standard substance according to the ratio of 1：1, and the artificial seawater and the standard substance to prepare a series of standard solutions, the distribution pattern of uncertainty in measurement of seawater COD is obtained based on the measured results of the series of standard solutions by the potassium iodide-alkaline potassium permanganate determination method. The distribution pattern is as follows： Uncertainty in measurement is big and not constant at the high end, but small and constant at the low end.
文摘Sodium erythorbate, antioxidant and curing accelerator, used in meat products, have no vitamin functionality. Ascorbic acid （AA）, in contrast, is a powerful antioxidant, but very unstable. The application of encapsulated AA in frankfurters could allow the incorporation of an antioxidant with vitamin functionality and improved stability. The aim of this study was to evaluate the application ofAA microcapsules in frankfurters and the effects of their application on the product. Different analyses were conducted. The values obtained for mass loss, moisture content, water activity, pH and instrumental color were not significantly different among the treatments. The frankfurters containing the microcapsutes exhibited the lowest hardness value （approximately 5,000 g）, resulting in better scores in the sensory analysis. It was possible to apply the AA microcapsules without compromising the oxidative stability and physicochemical characteristics of the product, providing a promising method for protecting AA and producing fortified frankfurters.
基金Water Pollution Control and Management of Science and Technology Majon Projects (No.2008ZX07207005)The Programs for Development of Science and Technology of Jilin Province of China (No.20071105)
文摘The effects of nitrate concentration in the main anoxic zone on denitrifying dephosphatation capability were conducted based on modified University of Cape Town （MUCT） process. Meanwhile the relation between optimal nitrate concentration （Nopt） and influent C/N ratio was evaluated, in which the influont chemical oxygen demand （COD） concentration was stabilized at （2905：10）mg/L, the influent total phosphorus （TP） concentration was stabilized at （7.0±0. 5）mg/L. The results indicated that： （1） the nitrate concentration in the main anoxic zone had an effect on denitrifying dephosphatation capability, and the average percentages of anoxic phosphorus uptake in total phosphorus uptake （ηa） increased with nitrate cancentration increasing, i.e., increasing from 62.1% at2.0 mg/L to63.7%, 65.6%, 68.1%, and 72.3% at 2.2, 2.4, 2.6 and 2.8mg/L, respectively; （2） the Nopt as function of influent C/N ratio could be calculated by the equation： y = 0.67x^2-7.79x ＋ 22. 21; the maximum percentages of anoxic phosphorus uptake in total phosphorus uptake （ηa,max） as function of the Nopt could be calculated by the equation： y=0.77-0.33e^-（x/1.52）. The Nopt was the important control parameter that must be optimized for operation of conveational biological nutrieat removal activated sludge （BNRAS） system.
文摘Magnetic and relativistic effects in uranium catalysts, the movement of charged particles under the effect of a uniform electric field and uniform magnetic field were studied in the paper. We have considered various mechanisms oscillating reactions （Models Jabotinsky-Korzukhina, Brusselator, Oregonator and Advanced Oregonator）. The mechanisms of the motion of charged particles under the influence of an electric field and a uniform magnetic field were proposed.
