The controlling system of triple pulse vacuum sterilizer for dental use adopts PIC single-chip computer as the controller. The information related to stream temperature and pressure of the stream and liquid mixture in the hermetic vessel is acquired and controlled. Linearization measurements of the temperature and pressure and fuzzy control technology are all involved in. The experiment result shows that the controlling system makes the sterilizer free from overshoot, steady-state error and non-robustness.

Objective To compare the therapeutic effect and safety of naloxone ,flumazenil and naloxone combined wiht flumazenil in treating acute diazepam poisoning and to find out ideal therapeutic treatment.Methods 45 patients were divided into three groups at random: naloxone group (n=15), flumazenil group (n=15) and naloxone combined with flumazenil group (n=15). Besides given the same routine therapy to each group, naloxone group received 0.4mg naloxone through intravenation and 1.2mg naloxone through intravenous drip; flumazenil group received 0.1mg flumazenil through intravenation and 0.9mg flumazenil through intravenous drip; naloxone combined with flumazenil group received 0.4mg naloxone and 0.1mg flumazenil through intravenation and 1.2mg naloxone and 0.9mg flumazenil through intravenous drip. Each patient's consciousness status was graded after given drug treatment 0, 5,15,60,90,180 minute. Testing the BR, SR, CK, CK-MB of every patient and recording to the Bp, HR, RR, SpO 2 and the rhythm of the heart continuously. Results At the point of 5 minute, the therapeutic efficiency of the group with combined drug use was higher than that of the naloxone group ( P

Objective To investigate the residues of antibiotics such as quinolones in fishes from Guangzhou aquatic products market.Methods The residues of three kinds of quinolones(NFLX,CPFX and ENFX) in four kinds of fishes collected from five agriculture products markets in Guangzhou were determined by RP-HPLC.Results NFLX was detected in all samples,ranged from 2.19-192.8 ng/g with the maximum concentration of 192.8 ng/g,the detection rate of CPFX was 40% with the average concentration of 4.34 ng/g,ranged form 0-25.36 ng/g,the detection rate of ENFX was 45% with the average concentration of 6.83 ng/g.Three kinds of quinolones were found with high detection rate in Micropterus salmoides and Anguilla japonica,the average detection rates of NFLX,CPFX and ENFX in muscle tissues of Micropterus salmoides were 100%,40% and 100% respectively,that in Anguilla japonica were 100%,40% and 80% respectively.Low rate of ENFX was found in Monopterus albus and Ctenopharyngodon idellus muscle tissues,the average detection rates were 20% and 10%.Higher pharmaceuticals concentrations were detected in the liver than those in the muscle tissue.Conclusion The residues of quinolones in the muscle tissue of fish sold in Guangzhou is considered eligible based on the related standards.

Objective To compare the quality of Flos Farfarae from different habitats, and provide basis for the utilization and development of Tussilago farfara. Methods The contents of rutin and tussilagone were determinated by HPLC, the 100-bud dry weight and bud color were weighed and observed. And the data of different samples were compared and statistical analysed. Results The content of rutin, tussilagone and 100-bud dry weight in Flos Farfarae from different place has a significant difference, and there was a significant positive correlation between rutin and tussilagone. Principal component and factor analysis showed that the quality of Flos Farfarae from Yushe, Ningwu, Guangling was better than other areas. Conclusion The quality of Flos Farfarae from different areas is difference, and wild T. farfara in Yushe, Ningwu, Guangling could be used as high quality germplasm.

Objective To investigate the effect of morphine preconditioning on mitochondrial permeability transition pore (MPTP) and its protective mechanism after myocardial ischemia-reperfusion injury. Methods A rat model of ischemia-reperfusion injury was established. Forty rats were injected with 2-3[H] DOG and then divided into 4 groups randomly: a sham operation (S) group, an ischemia-reperfusion injury (IR) group, a morphine preconditioning (Mp+IR) group, and a cyclosporine A preconditioning (CsA+IR) group. We monitored the concentrations of serum creatine kinase-Mb (CK-Mb) and cardiac troponin I (cTnI), and measured myocardial mitochondrial 2-3[H] DOG, cytochrome c content, Ca2+ concentration ([Ca2+]m), the velocity of Ca2+ intake and reaction half time of mitochondrial permeability transition pore (MPTP t1/2) in the 4 groups. Results The concentrations of serum CK-Mb and cTnI decreased more in the Mp+IR group and the CsA+IR group than those of the IR group. The concentrations of 2-3[H]DOG and [Ca2+]m in the IR group were evidently higher but the level of cytochrome c was lower than those of the sham operation group. The concentrations of 2-3[H] DOG and [Ca2+]m in the Mp+IR group decreased whereas the concentration of cytochrome c increased compared with those in the IR group. Mitochondrial 2-3[H]DOG content was positively correlated with the concentration of calcium (r=0.797, P<0.01). The 2-3[H]DOG and [Ca2+]m content were negatively correlated with cytochrome c in the IR group (r=-0.805 and r=-0.648, respectively, P<0.01). MPTP t1/2 in the IR group was shortened evidently, and that in the Mp+IR and CsA+IR group was significantly lengthened. Conclusion Morphine preconditioning may have myocardial protective effect through unburdening the calcium overload and lengthening the MPTP t1/2.

Objective To investigate the clinical effect of proximal femoral nail antirotation (PFNA) and dynamic hip screw (DHS) in treating senile intertrochanteric fractures.Methods From February 2006 to December 2014,111 cases of senile intertrochanteric fractures treated with PFNA and DHS at our institution were retrospectively analyzed.Fifty-nine cases were treated with PFNA (average age 77.4 years);and fifty-two cases were treated with DHS (average age 76.1 years).The outcome measures collected for statistical analysis on following aspect:surgical time,blood loss in operation,blood transfused,rate of patients transfused,time to partial weight beating,hospital stay,healing time of fracture,orthopedic complications,reoperation rate and post-operation hip function.The Harris Hip Score was used for functional evaluation.Results One hundred and eleven patients were followed up for 10 to 24 months (average 17.2 months).There were no significant differences between two groups with regard to the functional outcome at 1 year,hospital stay,orthopedic complications and reoperation rate (P ＞ 0.05).There were significant differences between the PFNA group and DHS group with regard to the surgical time [(60.7 ±9.9)min vs (97.5 ± 20.5) min],the blood loss in operation [(169.2 ± 82.1) ml vs (428.8 ± 126.O) ml],per patient concentrated red blood cells transfused [(0.7 ± 0.9) U vs (1.2 ± 1.3) U],blood transfusion rate (35.6％ vs 55.8％) and time to partial weight bearing [(12.9 ± 10.3)d vs (47.0 ± 15.5)d] (P ＜0.01).Conclusions PFNA is an effective method for the treatment of senile intertrochanteric fracture with the advantages of simple operative procedure,minimally invasion,stable fixation and fewer complications.

Objective To describe X-ray and CT findings of lung in paraquat poisoning.Methods CT and X-ray data of chest in 21 patients with paraquat poisoning were retrospectively analyzed.Results X-ray and CT findings of lung were varied with different time.≤7 d,there were mainly increase of lung marking in 17 cases,ground-grass attenuation in 14 cases and consolidation in 2 cases.7~14 d,increase of lung marking,consolidation and pulmonary fibrosis each could be seen in 4 cases,and 3 cases with ground-grass attenuation.≥14 d,there were pulmonary fibrosis in 4 cases,bronchiectasis in 3 cases,increase of lung marking in 2 cases.Conclusion Chest plain X-ray film and CT are of important value in observing the evolution,evaluating the prognosis and guiding the treatment project for the patients with paraquat poisoning.

AIM: To establish a HPLC-ELSD method for determination of astragaloside in Yiganning Granules. METHODS: The HPLC-ELSD with the Agilent C 18 column (4.6 mm?250 mm, 5 ?m) was used. The mobile phase was methanol-water (75∶25) at a flow rate of 1.0 mm?min -1 and the detector was SEDEX75. RESULTS: There was a good linear correlation in the range of 0.5984-2.3936?g. The recovery was 95.41% (RSD=1.1%, n=5). CONCLUSION: The method is proved to be precise、reproducibility and reliable. It is suitable for determination of astragaloside.

Sugarcane bagasse modified by polyethylenimine (PEI) and glutaraldehyde (GA) was used as a carrier to immobilize Clostridium acetobutylicum XY16 in the process of butanol production. The effects of chemically modified sugarcane bagasse on batch and repeat-batch fermentations were investigated. Batch fermentation was conducted with an addition of 10 g/L modified sugarcane bagasse and 60 g/L glucose, resulting in a high solvent concentration of 21.67 g/L and productivity of 0.60 g/(L x h) with the treatment of 4 g/L PEI and 1 g/L GA. Compared to the fermentations by free cells and immobilized cells on unmodified sugarcane bagasse, the productivity increased 130.8% and 66.7%, respectively. The fibrous-bed bioreactor also maintained a stable butanol production during repeat-batch fermentations, achieving a maximum productivity of 0.83 g/(L x h) with a high yield of 0.42 g/g.
Batch Cell Culture Techniques ; Bioreactors ; Butanols ; metabolism ; Cells, Immobilized ; Cellulose ; metabolism ; Clostridium acetobutylicum ; metabolism ; Fermentation ; Saccharum ; chemistry

Objective To observe the effects of hedysari polysaccharide (HPS) on myocardial fibrosis and the expression of MMP-2/TIMP-2 in model mice of diabetic cardiomyopathy; To discuss the mechanism of action of prevention and treatment of myocardial fibrosis in diabetes.Methods Sixty mice were randomly divided into model group, rosiglitazone group and HPS high-, mediume- and low-dose groups. The normal group was 12 non-transgenic male BKS.Cg-Dock7m+/+Leprdb/JNjumice with the same age. Each group was given relevant medicine for gavage, for 8 weeks. Blood glucose of mice before and after medication 2, 4, 6, and 8 weeks was detected. The levels of MMP-2, MMP-2 and MMP-9 in myocardium were measured by Masson staining. The protein expressions of MMP-2 and TIMP-1 in myocardium were detected by Western blot.Results Compared with the model group, the blood glucose of HPS (high- and medium dose) groups and rosiglitazone group decreased significantly. Masson staining showed that the green fibers in the model group significantly increased and rosiglitazone group and HPS high-dose group decreased compared with the model group. Western blot showed that the expressions of MMP-2 in model group and MMP-2/TIMP-2 ratio were declined significantly, while the expression of MMP-2 was increased and TIMP-2 was decreased significantly, and the ratio of MMP-2/TIMP-2 increased in rosiglitazone group and HPS high- and medium-dose group.Conclusion HPS may reduce the degree of myocardial fibrosis in model mice with diabetic cardiomyopathy. The therapeutic effect of HPS may be to relieve myocardial fibrosis in model mice by increasing the ratio of MMP-2/TIMP-2.