OBJECTIVETo investigate the biuret reagent to detect proteins in the application, the impact of different test conditions for test results.

METHODSThe biuret method to select three different instruments, reagents, calibrators are arranged in combination to form 27 sets of detection systems, each detection system is a combination of 5 serum samples for testing, 5 measured values obtained, the selection process normality good a serum for the study to determine the mean value of all AST after culling outliers obtained in order to calculate the various detection systems use a combination of biuret reagent to detect proteins bias.

RESULTSThe use of different detection equipment to detect proteins biuret reagent bias, homogeneity of variance (P = 0.467), the difference was not statistically significant (F = 1.688, P = 0.421). different detection reagents using biuret reagent to detect proteins bias, homogeneity of variance (P = 0.574), a statistically significant difference (F = 5.784, P = 0.011). different calibrators use biuret reagent to detect proteins bias, homogeneity of variance (P = 0.467), the difference was statistically significant (F = 5.289, P = 0.000).

CONCLUSIONBiuret reagent in the detection of protein applications, impact detection reagents and calibrators will test result, during the test than when it is necessary to detect deviation detection reagents and calibrators due to be considered.

0.05). The average amount of ammonia emission was 0.012%, 0.024% and 0.081% at pH values of 9, 11 and 13 respectively. Ammonia emission increased with the increasing pH values, especially for those admixtures containing carboxylate. Conclusion Ammonia emission from concrete admixtures sold in Lanzhou exceed the standard in different degree.Higher pH value may accelerate the ammonia emission from concrete admixtures and cause higher concentration of ammonia in indoor air.

The prescription and technology of pharmaceutical preparations are the basis for ensuring the quality and efficacy of medicines. Pharmaceutical excipients are important part of pharmaceutical preparations. As it's known to all that some pharmaceutical excipients can affect the activity of CYP3A, and then may influence the metabolism and bioavailability of its substrates in vivo. Relative bioavailability is a key element of generic drug research in China and the United States. Our country is advancing the quality and efficacy consistency evaluation of generic drugs. Therefore, it is of great practical significance to understand the impact of pharmaceutical excipients on CYP3A and its guiding role in consistency evaluation.

Based on melamine-Cu conjugate and subsequent interruption of formation of polythymine (Poly T)-templated copper nanoclusters (CuNCs), a novel fluorescent strategy was developed for detection of melamine.The method relied on the principle that the coordination of melamine to copper would be unfavorable for the reduction of Cu2+ in the poly T-CuNCs synthesis process, and thereby resulting in the decrease of fluorescence intensity of CuNCs.By this method, the fluorescence response of CuNCs displayed an linear relationship with melamine concentration in the range from 5 μmol/L to 120 μmol/L.The detection limit was 1.5 μmol/L.Furthermore, the assay was successfully applied in the detection of melamine in milk samples with good recoveries.

Professor TANG Wei-yong's treatment for children acute tonsillitisis from the three aspects oftreating symptoms, treating muscle and reconciliation, namely three-solution method. In addition, he modified three ancient prescriptions to create three-solution prescription. He applied the prescription into clinical practice and obtained a lot of good efficacy.

Objective To determine the association between fatty liver and coronary risk fcators in elderly men. Methods A cross-sectional study of 920 elderly men with or without fatty liver and obesity was performed in 2002. Age, body mass index (BMI), GPT, cholesterol, triglyceridemia, fast glucose, mean blood pressure, smoking and drinking consumption were analyzed. Results The prevalence of fatty liver was 11.1% in the non-obese participants (BMI

miRNAs are a class of small endogenous RNAs that degrade target mRNAs or repress their translation process. Several miRNAs in glioma are up?regulated, while some others down?regulated. Some miRNAs promote tumorigenesis; some others, however, play a similar function of tumor suppressor genes. Therefore, studies on the expression profiles of miRNAs in glioma may afford auxiliary basis for early clinical diagnosis and novel srtategies for therapy of glioma. This paper will review on researches about the expression levels of miRNAs and their targets in glioma.

AIM:To observe the secretion of vascular endothelial growth factor(VEGF)when adenovirus induced VEGF165(AdVEGF165)gene transferred into neonatal cardiomyocytes in vitro,and to investigate the impact on heart function after transplanted the transferred cardiomyocytes into infarct myocardium in rats.METHODS:Neonatal cardiomyocytes were cultured in vitro and labeled with BrdU,then transferred by AdVEGF 165.ELISA was applied to assay the expression and secretion of VEGF.Wistar rats,in which left descending branch of coronary artery was ligated,were randomly divided into four groups and transplanted into MI area with transferred cardiomyocytes(group Ⅰ),untransferred cardiomyocytes(group Ⅱ),AdVEGF 165(group Ⅲ)and culture medium(group Ⅳ),respectively.The echocardiograph was applied to evaluate the heart function before and after cell transplantation.Then the rats were executed and the hearts were harvested for histological(hematoxylin-eosin)and immunohistological(anti-BrdU dyeing)examinations.The vessels were also counted in injected area.RESULTS:ELISA indicated that the expression and secretion of VEGF in groupⅠwere higher than those in the rest(P

Objective To retrospectively review the mortality and morbidity after orthopedic surgery for aged patients with reference to orthopedic version physiological and operative severity score for the enumeration of mortality and morbidity (O-POSSUM) and Portsmouth POSSUM (P-POSSUM) and validate the score' s accuracy in operative risk prediction.Methods O-POSSUM and P-POSSUM for mortality and morbidity were applied to 839 aged patients who had undergone orthopedic surgery between January 2008 and December 2011.Observed mortality and morbidity were compared with the expected values.Results O-POSSUM predicted 230 morbidities,but the observed value was 182 (x2 =2.718,P ＞ 0.05).O-POSSUM predicted 46 deaths,higher than the observed 3 deaths (x2 =38.870,P＜0.01).P-POSSUM predicted 16 deaths,higher than the observed 3 deaths (x2 =8.997,P ＜ 0.01).Conclusions O-POSSUM accurately predicts postoperative morbidity in aged orthopedic patients.However,O-POSSUM and P-POSSUM overpredicts the mortality and should be used with caution.

Objective:To explore the influence of the selection of statistical uncertainty of control points in Monaco planning system on the dose distribution of nasopharyngeal carcinoma (NPC), aiming to provide the statistical uncertainty of single control point in Monte Carlo calculation which satisfies clinical needs.Methods:First, nine 10 cm×10 cm square fields with an equal interval of gantry angle were designed and five cases of 9-field intensity-modulated radiotherapy (IMRT) and five cases of single-arc volumetric-modulated arc therapy (VMAT) plans were randomly selected, Then, quality assurance (QA) verification plan using patient CT as QA phantom was created. Second, the grid spacing was selected as 3 mm during the calculation of dose distribution of QA plan. The statistical uncertainties of single control point were selected as 1%, 2%, 3%, 4% and 5%, respectively. Last, the deviation of dose distribution between different statistical uncertainties and 1% statistical uncertainty was analyzed.Results:For a square field and single IMRT field, the dose deviation of center point was almost 7% while the statistical uncertainty was selected 4%. For 9-field IMRT and single-arc VMAT, the dose deviation of center point was ≤ 1.5% and the average dose deviation of PTV was ≤ 0.3% when the statistical uncertainty of control points was changed from 1% to 5%. The percentage of the point dose deviation of the coronary plane of ≤ 1% was greater than 99% when the statistical uncertainty was ≤ 3% for 9-filed IMRT and 4% for single-arc VMAT.Conclusions:For the Monaco treatment planning system based on Monte Carlo calculation, the changes in the statistical uncertainty of control point from 1% to 5% exert significant effect upon the single field. In clinical application, the statistical uncertainty of control point should be ≤ 3% for 9-field IMRT and ≤ 4% for single-arc VMAT.