Objective To introduce a rapid spot test method for nitrite in water to meet the urgent need of nitrite monitoring during accidental pollution. Methods According to the drinking water legislation in Europe (threshold: 0.10 mg/L NO2-), a rapid spot test method for nitrite in water was established by using an optimized composition of reagent mixture and a binary positive/negative response, conducted as follows: a tablet of a mixture of solid reagents containing sulfanilamide, N-(1-naphthyl) ethylene diamine dihydrochloride and sodium chloride was put on a spot test plate of Teflon mould, then, a drop of 30%(V/V) HCl and a drop of water sample were added on the reagent material. Results Under these conditions, all the test samples containing ≥0.10 mg/L NO2- can produce a positive response of the characteristic red-purple color, whereas, the samples will produce a negative response when the level of NO2- was below the limit. The results of real water samples determined with this new method were confirmed by using the photometric method based on the use of the same reagents. Conclusion The method is simple, rapid , accurate, and suitable for field monitoring of nitrite in water.

Animals ; Humans ; Reproducibility of Results ; Selenium ; analysis ; Spectrometry, Fluorescence ; Spectrophotometry, Atomic

Objective To study the significance of dissection and exposure of the recurrent laryngeal nerve(RLN) in thyroid surgery.Methods The clinical data of 1 082 patients who had undergone operations on thyroid were retrospectively reviewed.All cases were routinely operated with dissection and exposure of RLN.Results Six cases had injury of RLN(0.5%),3 cases showed parathyroid insufficiency(0.3%)and 2 cases had injury of the superior laryngeal nerve(0.2%) ofter operation.The incidence of operative complications in thyroid surgery was closely related with if exposure of the RLN.Conclusions Exposure of the recurrent laryngeal nerve is a key measure to decrease injury of parathyroids,superior laryngeal nerve and recurrent laryngeal nerve during thyroid surgery.

OBJECTIVE:To compare the efficacy and safety of Sodium hyaluronate versus Carbomer,Polyethylene glycol,To-bramycin and Dexamethasone in the treatment of glaucoma with cataract. METHODS:464 glaucoma patients with cataract were randomly divided into group A(116 cases),group B(116 cases),group C(116 cases)and group D(116 cases). All patients re-ceived intraocular lens implantation;1-1.5 cm to Tramycin and Dexamethasone eye ointment,3-5 times a day. Based on it,group A received 1-2 Sodium hyaluronate eye drops,4 times a day. Group B received 1 Carbomer eye drop,3-5 times a day. Group C re-ceived 1-2 Polyethylene glycol eye drops,3-5 times a day. Group D received Tobramycin and dexamethasone eye ointment,1-1.5 cm every times,1-3 times a day. They treated for 1 month. Clinical efficacy,recovery of visual acuity and ocular surface functions [dry eye symptom score,tear film break-up time(BUT),corneal fluorescein staining(CFS),basal tear secretion(SIt),ocular sur-face disease index(OSDI)] and the incidence of adverse reactions in all groups were observed. RESULTS:The total effective rate sorted,patients with visual acuity higher than 0.6,BUT,OSDI by group A>group B>group C>group D,with significant differenc-es (P<0.05). patients with visual acuity in 0.3-0.6,0.1-0.3 and lower than 0.1,drycye symptom score,CFS,SIt in group A was less than group B,which was less than group C and group D,with significant differences(P<0.05). The incidence of adverse re-actions in group A was lower than group B,C,D,with significant differences(P<0.05),but there was no significant difference in group B,C,D(P>0.05). CONCLUSIONS:Sodium hyaluronate shows superior efficacy and safety to Carbomer,Polyethylene glycol,Tobramycin and Dexamethasone in the treatment of glaucoma with cataract,it can significantly improve visual acuity and ocular surface function.

Objective To investigate the impact of triptolide (TP) on proliferation and apoptosis of imatanib resistant CML cell (K562/G01) and its regulating effect on Wnt/β3-catenin signal pathway.Methods A series of 10,20,40,and 80 nmol/L of triptolide were used in CML cells K562/G01 for 12,24,and 48 hours.The cell proliferation was detected with methyl thiazolyl tetrazolium (MTT) test.The apoptosis was assessed with flow cytometry (FCM).The mRNA expressions of breakpoint cluster region-c-abl (BCR-ABL),β-catenin and its down-stream targets Lef-1,and cyclinD1 were analyzed with real-time quantitative polymerase chain reaction (RT-PCR),respectively.Results Triptolide significantly inhibited K562/G01 cell growth ability and induced apoptosis in a dose-dependent manner.Mter being treated with 20,40 nmol/L TP for 24 hours,the cell growth inhibition rates were (22.62 ± 1.33) ％,and (51.41 ±1.39) ％,respectively.The late apuptosis rates were (6.91 ± 0.14) ％,and (7.64 ± 0.47) ％,respectively.Meanwhile,PCR data showed that the mRNA levels of BCR-ABL were decreased,compared to the control group,the mRNA levels of β-catenin,Lef-1,and cyclinD1 were also decreased obviously after treatment.Conclusions Our data indicated that the triptolide could inhibit the proliferation and induce the apoptosis of K562/G01,and the mechanism might be related to the blockade of Wnt/β-catenin signal pathway.

The balanced scorecard, a new performance management tool used by enterprises, transcends the traditional assessment method of measuring an enterprise only from the financial perspective and renders it possible to view an enterprise simultaneously from four perspectives: financial, customer, internal process, and learning and growth. The balanced scorecard, which can also be used in the medical and health field, enables the hospital to continuously improve performance so as to realize its vision and strategic goals. The paper gives an account of the concept, development steps and principles of the balanced scorecard and its application in hospital strategic management, thus identifying a new channel for hospital development.

Objective:To evaluate the effectiveness and treatment feature of maxillary incisor extraction in orthodontics.Methods:9 patients underwent orthodontic treatment with maxillary incisor extraction,5 female and 4 male,with an average age of 1 7.2 years at the start,were included.5 patients were treated by extraction of both upper incisors and lower first premolars,4 by extraction of the abnor-mal incisor and the first premolars in the other three quadrants.Cephalometric and Bolton index analysis were carried out.Results:Sat-isfactory treatment results were observed in all patients.Before treatment the predicted Bolton index of the patients of the anterior ratio and the overall ratio were 80.1 4% and 91 .3%,after orthodontic treatment 78.68% and 90.28%,respectively.Cephalometric analysis showed that U1 -NA(mm),U1 -NA,L1 -NB(mm),L1 -NB,U1 -SN,L1 -MP,UL-E and LL-E were decreased(P <0.05).Conclu-sion:Individual treatment plan based on Bolton index analysis and the corresponding techniques and methods,the patients with abnor-mal upper incisors can be effectively treated with the extraction of maxillary incisors.

Objective:To explore the influence of diabetic self-management education on blood glucose control and inflammatory factor levels in inpatients with diabetes mellitus (DM).Methods:A total of 168 DM patients,who hospitalized in department of endocrinology in 163rd hospital of Chinese PLA from Jun 2012 to Jun 2013,were ran-domly divided into self-management education group (self-management group,n=88)and routine health education group (routine management group,n = 80).Self-management group received self-management education course namely AADE7TM ,provided by full-time DM health education staff,including healthy eating,being active,monito-ring,taking medication,problem solving,healthy coping and reducing risks,while routine management group re-ceived routine DM health education.Blood glucose control,changes of levels of myeloperoxidase (MPO),tumor necrosis factor-α(TNF-α)and intercellular adhesion molecule-1 (ICAM-1)were examined before and after interven-tion.Results:Compared with before intervention,there were significant reductions in levels of fasting blood glucose (FBG),postprandial blood glucose (PBG)and glycosylated hemoglobin (HbA1c)in both groups after interventions (P <0.05 all).Compared with routine management group,there were significant reductions in levels of FBG [(7.1 ±1.3)mmol/L vs.(6.0±1.1)mmol/L],PBG [(9.5±1.6)mmol/L vs.(8.8±1.4)mmol/L]and HbA1c [(7.9 ±1.5)% vs.(7.2±1.1)%]in self-management group,P <0.05 all.Before discharge,there were significant de-crease in inflammatory factor levels in both groups compared with before intervention (P < 0.05 all).Compared with routine management group after intervention,there were significant decrease in inflammatory factor levels [TNF-α:(201.0±57.3)pg/ml vs.(100.7±49.2)pg/ml,ICAM-1:(25.2±3.6)ng/ml vs.(18.2±2.9)ng/ml] in self-management group,P < 0.05 both.Conclusion:Self-management education provided by full-time diabetic health education staff is superior to routine diabetic health education method in controlling blood glucose and decrea-sing inflammatory factor levels,indicating it can improveβcell function and relieve insulin resistance.

To introduce composition,the testing principle of the urine analyzer,To reduce the failure rate, extend the service life of the instrument and improve the accuracy of diagnosis. Make the maintenance system ,according to the system of equipment maintenance maintain the urine analyzer daily and monthly. The maintenance plays an important role in reducing the failure rate, extending equipment life and improving the accuracy of diagnosis.

Objective　Exploring how to check the proportional hazards assumption of the Cox model,and the solutions to non-proportional hazards between the covariates and the hazard function.Methods　With a example data set of Ⅲc stage ovarian serous cystadenocarcina,illustrating how to use graphical methods to check the proportional hazards assumption of the Cox model.Results　the predictor of post-surgery administering medicine times violated the proportional hazards assumption of the Cox model.Conclusion　when using the Cox model to analyze the predictors of survival time,checking whether the predictors violate the proportional hazards assumption of the Cox model or not should be paid attention to.