On the basis of continuous tests and batch tests, conversion regular patterns of acetate, propionate and butyrate in activated sludge at different heights of the UASB reactor were conducted. Results indicated that the...On the basis of continuous tests and batch tests, conversion regular patterns of acetate, propionate and butyrate in activated sludge at different heights of the UASB reactor were conducted. Results indicated that the conversion capacity of the microbe is decided by the substrate characteristic when sole VFA is used as the only substrate. But when mixed substrates are used,the conversion regulations would have changed accordingly. Relationships of different substrates vary according to their locations. In the whole reactor, propionate's conversion is restrained by acetate and butyrate of high concentration. On the top and at the bottom of the reactor, conversion of acetate, but butyrate, is restrained by propionate. And in the midst, acetate's conversion is accelerated by propionate while that of butyrate is restrained. It is proved, based on the analysis of specific conversion rate, that the space distribution of the microbe is the main factor that affects substrates' conversion. The ethanol type fermentation of the acidogenic phase is the optimal acid type fermentation for the two phase anaerobic process.展开更多
A semi-classical scheme is presented to solve the coupled-channel cavity QED (CQED) model. Such model exhibits remarkable characteristics as shown by numerical calculations. A relation between the swing or angular vel...A semi-classical scheme is presented to solve the coupled-channel cavity QED (CQED) model. Such model exhibits remarkable characteristics as shown by numerical calculations. A relation between the swing or angular velocity of the detuning and the motion of the atoms is discussed. With the augmentation of the optical field intensity or frequency, the atoms are trapped firstly and then they move stochastically and finally chaos sets in.展开更多
^13C-UBT, histology and RUT were used in diagnosing HP infection in this study (gastric and duodenal ulcer, 65 cases; control, 36 cases). Any two tests of the above three are positive, then HP infection is confirmed. ...^13C-UBT, histology and RUT were used in diagnosing HP infection in this study (gastric and duodenal ulcer, 65 cases; control, 36 cases). Any two tests of the above three are positive, then HP infection is confirmed. Results: The positive rate of ^13C-UBT, histology and RUT are: 81.54%, 83.1%, 84.62%, sensitivity: 96.23%, 86.8%, 84.91%, specificity: 100%, 91.67%, 83.33%. We conclude that ^13C-UBT and histology and accurate in diagnosing HP infection; though the sensitivity and specificity of RUT are lower,展开更多
The prognosis of patients with severe viral hepatitis is concerned byclinicians, patients and their relatives. Many factors may influence on the prognosis of patientswith this disease. Many studies on the prognosis of...The prognosis of patients with severe viral hepatitis is concerned byclinicians, patients and their relatives. Many factors may influence on the prognosis of patientswith this disease. Many studies on the prognosis of severe viral hepatitis by multiple logisticregression analysis have shown generally consistent results. Previouly we established a scoringmodel of severe viral hepatitis (SMSVH) by logistic regression analysis. The aim of this study wasto estimate prospectively the 6-month survival rate of patients with severe viral hepatitis usingSMSVH.展开更多
文摘On the basis of continuous tests and batch tests, conversion regular patterns of acetate, propionate and butyrate in activated sludge at different heights of the UASB reactor were conducted. Results indicated that the conversion capacity of the microbe is decided by the substrate characteristic when sole VFA is used as the only substrate. But when mixed substrates are used,the conversion regulations would have changed accordingly. Relationships of different substrates vary according to their locations. In the whole reactor, propionate's conversion is restrained by acetate and butyrate of high concentration. On the top and at the bottom of the reactor, conversion of acetate, but butyrate, is restrained by propionate. And in the midst, acetate's conversion is accelerated by propionate while that of butyrate is restrained. It is proved, based on the analysis of specific conversion rate, that the space distribution of the microbe is the main factor that affects substrates' conversion. The ethanol type fermentation of the acidogenic phase is the optimal acid type fermentation for the two phase anaerobic process.
文摘A semi-classical scheme is presented to solve the coupled-channel cavity QED (CQED) model. Such model exhibits remarkable characteristics as shown by numerical calculations. A relation between the swing or angular velocity of the detuning and the motion of the atoms is discussed. With the augmentation of the optical field intensity or frequency, the atoms are trapped firstly and then they move stochastically and finally chaos sets in.
文摘^13C-UBT, histology and RUT were used in diagnosing HP infection in this study (gastric and duodenal ulcer, 65 cases; control, 36 cases). Any two tests of the above three are positive, then HP infection is confirmed. Results: The positive rate of ^13C-UBT, histology and RUT are: 81.54%, 83.1%, 84.62%, sensitivity: 96.23%, 86.8%, 84.91%, specificity: 100%, 91.67%, 83.33%. We conclude that ^13C-UBT and histology and accurate in diagnosing HP infection; though the sensitivity and specificity of RUT are lower,
文摘The prognosis of patients with severe viral hepatitis is concerned byclinicians, patients and their relatives. Many factors may influence on the prognosis of patientswith this disease. Many studies on the prognosis of severe viral hepatitis by multiple logisticregression analysis have shown generally consistent results. Previouly we established a scoringmodel of severe viral hepatitis (SMSVH) by logistic regression analysis. The aim of this study wasto estimate prospectively the 6-month survival rate of patients with severe viral hepatitis usingSMSVH.
