Objective To explore the correlation between the pulmonary function and air pollutant emissions for the woolen and dust factory workers in Dongguan city .Methods Totally 519 yarn factory (wool group) and 503 dust factory (dust group) workers ,and 326 individuals (control group) undergoing the healthy physical examination were selected ,the respirometer was a‐dopted to detect the pulmonary function .The air sampling was carried out in the above factory areas and non‐factory communities , then the concentrations of silicon dioxide (SO2 ) ,nitrogen dioxide (NO2 ) ,silica (SaO2 ) ,cotton and other PM2 .5 mass were meas‐ured ,and their correlation with the lung function was analyzed .Results Compared with the control group ,the forced vital capacity (VC) ,forced vital capacity (FVC) ,maximal voluntary ventilation(MVV) ,first second forced expiratory volume (FEV1 .0) and ra‐tio of first second forced expiratory volume and forced vital capacity (FEV1 .0 % ) in the workers of wool group and dust group were decreased (P<0 .05) ,while VC and FVC had no statistical differences between the wool group and dust group ,but MVV , FEV1 .0 and FEV1 .0% had statistical difference between these two groups (P<0 .05) ,moreover the dust group was significantly lower than the wool group (P<0 .05) .In the comparison of air pollution ,the cotton dust concentration in the yarn factory area was significantly higher than that in the dust factory area and the non‐factory community (P<0 .05) ,while SO2 ,NO2 ,SaO2 and other PM2 .5 substances were significantly lower than those in the dust factory area ,but significantly higher than those in the non‐factory community ,moreover the above five concentrations had statistical differences between any two groups (P<0 .05) .The Pearson cor‐relation analysis showed that any one of SO2 ,NO2 ,SaO2 ,cotton dust and other PM2 .5 substance concentrations had significantly negative correlation with any one of VC ,FVC ,MVV ,FEV1 .0 and FEV1 .0% (r>0 .60 ,P<0 .05) .Conclusion The air pollution in the partial factories in our city is heavier and the lung function of workers are injured ;the cotton dust content is high in the yarn factories area and the SO2 content is high in the dust factories ,which may be the main factors of the lung function injury in the woolen yarn and dust factory workers .

Objective:To develop a new type of microelectrode used to measure free fluoride in minim solution. Methods:F--ion sensitive field transistor( F--ISFET) microelectrode was developed based on H+-ISFET combined with an Ag/AgCl referential electrode of microtube. The F--ISFET was used to determine the free fluoride ions in saliva and dental plaque fluid in microliter. And its property was investigated. Results:The test limit of F--ISFET was 10 -6 mol/L-10 -1mol/L, the linear test limit was 10 -6mol/L-10 -4mol/L, the sensitivity was 30-55 mV/pF, the responding time was less than 30 seconds, r2 was 0.97, the reclamation was 94%-104%. Conclusion:F--ISFET can be used to measure free fluoride ions in dental plaque.

Objective To evaluate the relationship of biological status of HPV 16 and expression of L1 protein with the degree of cervical tumorigenesis.Methods Sixty-one patients with cervical lessions were enrolled and divided into five groups according to pathology of cervical lesions,including chronic cervicitis(n = 27),cervical intraepithelial neoplasia(CIN) Ⅰ-Ⅱ(n = 10),carcinoma in situ(n = 8),early-stage(n =7)and mid/late-stage(n = 9)of cervical carcinoma.HPV type and its biological status were detected by PCR amplification,and L1 protein in HPV 16 positive tissues was detected by Western blot.Kruskal-Wallis was used to compare between the groups,and Pearson correlation analysis was used to evaluate the relationship of HPV biological status and L1 protain expression with cervical lesions.ResultsFifty-three out of 61 patients with cervical lesions were detected with HPV positive(86.9%).All 25 patients with chronic cervicitis were in HPV free mode; in CIN Ⅰ-Ⅱ group,6 patients were in free and 2 in integral mode; in carcinoma in situ group,1 patient in free,3 in mixed and 3 in integral mode; in the early-stage cervical cancer group,2 patients in mixed and 4 in integral mode; in mid/late-stage cancer group,1 patient in mixed and 6 in integral mode.A strong positive correlation was found between the HPV in integral mode and the severity of cervical lesions(r = 0.705,P ＜0.01).The expression of L1 protein was negatively correlated with the aggravation of cervical lesions in HPV 16-positive patients(r = -0.755,P ＜0.01).Conclusion The integral mode of HPV16 and low expression of L1 protein may have predictive value for the severity of cervical lesions.

OBJECTIVE： To evaluate the economic effectiveness of different pharmacotherapeutic schemes for the same disease.METHODS： Using pharmacoeconomical cost-effectiveness analysis， six schemes for upper urinary tract infections were compared.RESULTS： The total effective rate and cost were both the lowest in group B(70.00％ ).The cost-effectiveness ratios of A， B， C， D， E， F were 28.60、 19.13、 43.27、 29.99、 43.02、 29.14， respectively.They became 23.65、 18.01、 34.00、 24.87、 33.91、 24.20 by sensitivity.CONCLUSION： The A and F were both the most inexpensive and effective schemes.

Objective:To analyze the accuracy of the digital imaging fiber optic transillumination (DIFOTI) on diagnosis of caries lesions depth using DIAGNOcam system.Methods:This experiment adopted self-matching design.Seventy-four extracted teeth (molar:sixty-six,premolar:eight) with one caries lesions in proximity which were not damaged in surface marginal ridge were selected.Dental calculus and dental stains were removed from the extracted teeth for standby application.A sign was marked in the middle of the occlusal surface edge at the side of decay.Then the teeth were fixed in the standard model of dentition and cavities were adjacent with the sound tooth surface.Sticky wax was applied to seal the level of 2 mm beyond cemento-enamel junction (CEJ) in the direction of occlusion and interproximal space to imitate gingival margin and gingival papilla.The standard models of dentition was seated in imitation head mold.The lesions depth degree was looked into and checked with DIAGNOcam system.Besides,the pictures on the occlusal surfaces were recorded and saved.The sign above could be seen on the picture.The measuring tool in DIAGNOcam system was used to measure the depth of the caries from the sign (as starting point) to the deepest point of caries in the pictures and its length was recorded for a.The line a was lengthened to the contralateral edge of occlusal surface in the photo and the length was recorded for b.A line from the marked point on the occlusal surface edge of the extracted teeth was draw parallel to the line b on the corresponding photo and its length was recorded for c.The depth of the cavities on the projected images was recorded for d,and calculated d/a =c/b (digital optical fiber measured decay depth/caries damage depth of the image =actual tooth width/tooth width of the image),and d =c/b × a inferred.At last,the teeth were taken out from the standard model dentition.The decay of the tooth was removed completely.The actual depth of the cavity was recorded for D.The difference between d and D was recorded for Δd.The software of SPSS 20.0 was used to test the consistency of the results,and the MedCalc 14.8.1.0 software was used for Bland-Altman analysis.Results:The intraclass correlation coefficient (ICC) between d and D was 0.951 (ICC ＞ 75 ％),P =0.263.There was a function relationship y =0.23 ± 0.9 1x between d (x) and D (y).Bland-Altman analysis method showed that the mean of Δd (Δd) was 0.05 mm,the standard deviation of Δd (ΔdsD) =0.308,and the 95％ confidence interval was (-0.55 to 0.65).The amplitude of difference was clinically acceptable.So the consistency of the two measurement modes was high.Conclusion:There was no significant difference between the depth of caries lesions checked with DIAGNOcam system and the depth of the actual cavity,and the consistency was very good.The vitro study suggests that the DIAGNOcam system may be used to assess the depth of caries cavity as a useful tool in diagnosis and treatment.

Objective To investigate the effect of different reference transducer positions measurement on intra-abdominal pressure (IAP) in ICU patients. Methods 31 cases of patients in ICU in need of measuring IAP were studied from January 2015 to July 2015 in this study. In each patient, transvesical and the direct methods were both used to measure IAP. Three sets of IAP measurements were obtained in the supine position, using the different reference levels and kept as IAPpubis, IAPmidax, IAPphlebostatic. The results were compared using Spearman rank correlation,paired t test and Bland–Altman statistics. Results When symphysis pubis was uesd, the result of direct method was (9.82±4.01) mmHg, the result of indirect method was (8.77 ± 4.48)mmHg (P<0.05), the correction between two methods was 0.967, P<0.05. When midaxillary level was uesd to measure, the result of direct method was (11.74 ± 4.71) mmHg, the result of indirect method was (11.65 ± 4.63)mmHg, the correction between two methods was 0.972, P=0.10. When phlebostatic was uesd, the result of direct method was (10.98 ± 4.65) mmHg, the result of indirect method was (10.38 ± 4.75)mmHg, the correction between two methods was 0.970, P<0.05. The calculated bias between IAPmidax and IAPpubis was 2.9 mmHg, 95%agreement of limits was (-0.8-6.5) mmHg, and the maximum difference value was 11 mmHg. The calculated bias between IAPmidax and IAPphlebostatic was1.3 mmHg, 95%agreement of limits was-1.4-4.0 mmHg, and the maximum difference value was 4.2 mmHg. Conclusion In supine position, the value obtained via the bladder can reflect the true IAP, and the symphysis pubis or phlebostatic axis reference lines are not interchangeable with the midaxillary level.

Objective To establish the fingerprints of quaternary ammonium hydrate alkaloids in Radix Zanthoxyli nitidii by means of HPLC and to identify and evaluate the quality of different parts and commercial decoction pieces of Radix Zanthoxyli nitidii.Method The column of Zorbax Eclipse XDB-C_8(4.6?150mm,5?m)was selected.The mobile phase consisted of A:3 % glacial acetic acid-diethylamine(1000:7.8),B:methanol,and C:acetonitrile(non-lin- ear gradient elution).The elution speed was 0.8 mL?min~(-1),the detection wavelength was at 250 nm and 270 nm,and the column temperature was 20℃.Results The HPLC fingerprint of Radix Zanthoxyli nitidii consisted of 21 peaks which were chiefly composed by alkaloids such as Chelerythrine,Nitidine chloride,with a consistent peak-to-peak ratio.The constituents' distribution information provided quality information for assessing medicinal materials.Conclusion It showed that the alkaloids distributed mainly in the cortex of the roots,so the commercial decoction pieces of aged roots shed cortexes are inferior.The stems can not be used equivalently with the roots due to low content distribution of alkaloids.

Objective To evaluate the nursing effect of warming feeding formulation of the enteral nutrition associated diarrhea in the critically ill tube-fed patients. Methods A total of 60 patients with enteral feeding were enrolled and divided randomly into the warming group and the room temperature group with 30 cases in each group by random digits table method. The room temperature group received room temperature oral feeding by nutrition pump. The warming group used nutrition pump and heating rod was placed on the nutritional tube 50 cm far from patient's nose. A semi-quantitative scale based on stool volume and consistency was used for daily assessment of diarrhea. Results Patients were tube-fed for a mean duration of (11.20±2.98) and (10.93±2.69) days, respectively in the room temperature group and the warming group. There was no significant difference in these two groups (U=425.000, P > 0.05). The diarrhea score was 4.88 ±3.41 in the room temperature group and 5.51±4.44 in the warming group. There was no significant difference in these two groups (U=436.500, P > 0.05). The diarrhea per total feeding days was 10.42%(35/336) in the room temperature group and 16.24%(51/314)in the warming group. There was no significant difference in these two groups (χ2=4.862, P < 0.05). Conclusions The airtight enteral nutrition does not need warming when it is infused with the enteral nutrition pump at room temperature.

Objective To study the levels of coagulation factors in cord blood from normal newborns.Methods The study was clinical experimental study.One hundred and thirty-six cord blood samples collected from newborns who were born in Guangzhou Women and Children's Medical Center from November 2011 to January 2012.The levels of eight coagulation factors FⅡ,FV,FVⅡ,FVⅢ,FⅨ,FⅩ,FⅪ and FⅫ in cord blood were detected using CA-1500 Automatic Blood Coagulation Analyzer.Results The levels of eight coagulation factors in cord blood:the 95％ reference ranges were 27.04％-49.02％,53.30％-116.40％,27.80％-56.70％,19.16％-113.06％,19.85％-35.65％,24.20％-48.00％,24.40％-42.20％ and 9.20％-54.60％ respectively.The 99％ reference ranges were 23.56％-52.50％,53.30％-116.40％,27.80％-56.70％,4.31％-127.91％,17.35％-38.15％,24.20％-48.00％,24.40％-42.20％ and 9.20％-54.60％ respectively.Conclusion The study establishes the reference ranges for levels of coagulation factors in cord blood,it will provide experimental basis for diagnosis and differential diagnosis for neonatal congenital or hereditary coagulation factor deficiency.

Objective To evaluate the relationship between sternum protection and bone marrow suppression in postoperative radiotherapy for esophageal carcinoma. Methods Total of 98 postoperative patients with thoracic esophageal carcinoma were randomly divided into experimental group (52 cases) and control group (46 cases). All patients were given intensity-modulated radiotherapy (IMRT), with the dose of 50-50.4 Gy. The patients in experimental group were irradiated by 6 fields (4-fields in front, 2-fields behind) which were crossed to avoid direct exposure to the sternum. The patients in control group were irradiated by 5 fields (3-fields in front, 2-fields behind) with front-middle of the field passing through the sternum. Concurrently all patients received 2 cycles of cisplatin chemotherapy. Results Dmean, V20 and V30 of the sternum in the experimental group were (20.21 ±3.60) Gy, (40.78 ±7.19) % and (33.78 ±9.44) %, which were lower than those in the control group [(30.91±5.21) Gy, (81.01±4.81) %, (51.60±6.84) %], respectively (P<0.05). However, the volume and dose distribution of lung, spinal cord and heart were similar between the two groups (P> 0.05). Both the incidence rates of bone marrow suppression at 14th day and 35th day after radiotherapy were significantly higher in the control group (52.2%, 73.9%) than those in the experimental group (28.8 %, 50.0 %) (P< 0.05), and the incidence rate of bone marrow suppression at 7th day after radiotherapy was similar between the two groups. Conclusion Protecting and sketching for sternum in postoperative radiotherapy for esophageal carcinoma can reduce the incidence of bone marrow suppression effectively, which would not increase the radiation dose in the lung, heart and spinal cord.