ABSTRACT
Anaerobic granular sludge (AnGS), a self-immobilized aggregate containing various functional microorganisms, is considered as a promising green process for wastewater treatment. AnGS has the advantages of high volume loading rate, simple process and low excess sludge generation, thus shows great technological and economical potentials. This review systematically summarizes the recent advances of the microbial community structure and function of anaerobic granular sludge, and discusses the factors affecting the formation and stability of anaerobic granular sludge from the perspective of microbiology. Moreover, future research directions of AnGS are prospected. This review is expected to facilitate the research and engineering application of AnGS.
Subject(s)
Sewage/chemistry , Waste Disposal, Fluid , Anaerobiosis , Microbiota , Water Purification , Bioreactors/microbiologyABSTRACT
OBJECTIVE:To compare and analyze blood concentration changes of fluorouracil administered to guinea pigs by different paths.METHODS:The peripheral vein and portal vein blood samples of guinea pigs were taken at different time after administered with fluorouracil in3different ways:group A(by arterial infusion),group B(by intravenous infusion)and group C(by celiac infusion).The blood concentration changes were determined and analyzed by HPLC.RESULTS:The portal vein and peripheral vein blood concentrations in group A and B reached peak value5min after administration with flu?orouracil while group C reached peak at10min;the portal vein blood concentrations in group A reached the highest in the first20min while group C showed the highest value in the last30min.CONCLUSION:Arterial infusion combining celiac infusion path was recommended for local chemotherapy;arterial infusion combining intravenous infusion or intravenous infusion com?bining celiac infusion was recommended for the local therapy while giving consideration to systemic chemotherapy.
ABSTRACT
OBJECTIVE:To establish a method for the contents determination of bacterial endotoxin in Puerarin and Glucose injection.METHODS:The kinetic-turbidimetric technique was adopted to dilute the puerarin glucose injection by2-fold,in which,the contents of bacterial endotoxin was determinated by preliminary interference test and interference test.RESULTS:Diluting the sample by2-fold could effectively eliminate its interference to tachypleus amebocyte lysate(TAL).The average recovery rate was at the range of50%～200%.CONCLUSLON:Compared with the pyrogen rabbit de-termination method and the half-quantity gel method,the kinetic-turbidimetic technique has many merits such as high de-termination sensitivity,short cycle,accurate result and better reproduction quality,etc.
ABSTRACT
OBJECTIVE:To observe the effects of Panax notoginseng saponins(PNS)on learning and memory ability of ibotenic acid(IBA)-induced Alzheimer’s disease model of mouse and content of acetylcholine(ACh)in hippocam?pus.METHODS:To develop the model by injecting into basalis magnocellularis with IBA.The models were treated with PNS and NS.Learning and memory ability were measured by Morris water maze and content of ACh in hippocampus by spec?trophotometry.RESULTS:PNS can increase learning and memory ability and the content of ACh in hippocampus of model mouse.CONCLUSION:The reduction of learning and memory ability of mouse could be treated with PNS,and the increase of the content of ACh in hippocampus may be one of the mechanism of the effects.