Objective To explore the concentrations and diameters of the particulates in indoor air of the cosmetic workshops, and provide scientific basis for the testing and evaluation of air cleanliness of the cosmetic workshops. Methods The testing and evaluation on concentrations of the particulates with the diameters of 0.3,0.5,1.0,2.0,3.0,5.0 ?m in indoor air of the cosmetic workshops was carried out among 11 cosmetic manufactures with air filtering and purifying system(air-purified factory) and 13 cosmetic manufactures without air filtering and purifying system but with mechanical ventilation (air-unpurified factory). Results The medians of 0.3～5.0 ?m particulates in air of cosmetic workshops in air-purified factories were significantly lower than those in air-unpurified factories respectively. The concentrations of the particulates in air of cosmetic workshops in air-unpurified factories showed no significant differences compared with those in ambient air.The concentrations of 0.5 and 1.0 ?m particulates showed the significant correlation with those of 0.3?2.0?3.0?5.0 ?m particulates. The concentrations of 2.0?3.0?5.0 ?m particulates showed the significant correlation between each other except for 0.3 ?m particulates. Conclusion The particulates show lower concentration, the air cleanliness doesn't meet the requirement the national standard of 100 000 class in air of cosmetic workshops in air-purified factories. The concentration of 0.5 ?m particulate is suitable for evaluation on air cleanliness in air of cosmetic workshops.

Objective To explore the manifestation and diagnostic value of CT in retinoblastoma. Methods Twentythree cases of retinoblastomas proven by operation and pathologic examination were collected. Their CT images, clinical symptoms and pathologic results were retrospectively analyzed. Results Twentythree patients of retinoblastomas aged from 4 months to 9 years (mean 2.4 years). CT images showed soft tissue mass (shaped as node, crescentshaped or occupied the entire space of the eyeball) was in the globe of all cases. There was calcification in 19 cases (82.6%), including “small pinch” in 12 cases or “patches” in 7 cases. Five cases were found the optic nerve thickened (21.7%), and 1 case of intracranial invasion through the optic nerve canal (1/23), and 6 cases of retina detachment (6/23). The lesion showed mild or moderate enhancement after intravenous contrast medium were performed. Conclusion CT has an advantage on showing the size, shapes, intrastructures and invasive degree of the lesion, and is meaningful to the diagnosis and differential diagnosis of retinoblastoma.

Adult ; Bronchi ; Foreign Bodies ; Humans ; Male ; Trachea ; pathology

The association rules in data of traditional Chinese medicine prescriptions were analyzed using SQL Server 2008,which showed that 17 core compatible drug pairs were in line with the association rules.For example,platycodon grandiflorum combined with liquorice,known as Liquorice and Platycodon Decoction,can treat the principal and secondary aspects of a disease by ventilating the lungs and resolving the phlegm,removing the toxic substances and relieving the sore throat.Mining compatible drug pairs by analyzing their association rules can provide evidence for their clinical application.

Objective To investigate the health condition of swimmers who swim in a river in Guangzhou city and to know the influencing factors in order to provide the scientific data for making the diseases control guide for swimmers swimming in the river.Methods The swimmers who swam in a river in Guangzhou city were selected and the cluster sampling survey was conducted by telephone interview and questionnaires in 2006.The statistic analysis of the data was done with the chi-square and Logistic regression.Results 17.9% of the investigated swimmers felt disconffortable in the first time to swim in the river,the main symptoms were eye and skin symptoms,12.2% had the same symptoms in second time to swim in the river,there was a significant difference between the prevalence rates of the eye symptoms.The Logistic regression analysis showed that the following factors were associated with the prevalence of discomfortable symptoms:age,gender,swimming with any kinds of tampon in unclean river water,in the first time to swim in the river and in the second time to swim in the river,the related OR values were 0.95 and 0.97,3.55 and 2.32,14.83 and 6.7.Other factors associated with the prevalence of discomfortable symptoms were as follows:swimming period in unclean fiver water,swimming stroke,chokes the water,times of choking water,using earplugs,head position in water,the related OR values were 1.06,0.50,2.1,1.22,0.44,1.65.Concousion To swim in the natural unclean river may cause the discomfort,the main problems are eye and skin symptoms.

Using sustained release tablets of gardenia extract as model drug and DPPH radical scavenging capacity as antioxidant index, the feasibility of using pharmacodynamics index was explored to evaluate sustained release tablets. Applying the established quantifiable method of DPPH radical scavenging to the dissolved liquid of model drug, release profiles and biological effects profiles were drawn, and their correlation was discussed. A good correlation was observed by linear regression and f2 actor, suggesting that the indicator could be used to evaluate sustained release tabletsofextracts of gardenia in which iridoids were mainly involved.
Antioxidants ; metabolism ; pharmacology ; Biphenyl Compounds ; metabolism ; Delayed-Action Preparations ; metabolism ; pharmacokinetics ; Free Radicals ; metabolism ; Gardenia ; chemistry ; Kinetics ; Linear Models ; Oxidation-Reduction ; drug effects ; Picrates ; metabolism ; Plant Extracts ; metabolism ; pharmacokinetics ; Tablets

ObjectiveTo investigate the MRI features of placenta accreta.MethodsFrom Apr 2009 to Jun 2011,15 patients with placenta accrete received MRI examination.In them,placenta accrcta was diagnosed based on clinical manifestations or postoperative histopathologv.The MR features of placenta accreta in thcm( study group) were retrospectively analyzed and compared with those in 15 pregnant women without placenta accreta (control group)with Fisher exact test.ResultsIn the 15 patients with placenta accreta,uterine bulging and(or) a focal outward contour bulge was detected in 14 patients; heterogeneous signal intensity in the placenta was detected in 15 patients; dark intraplacental bands on T2-weighted images was detected in 15 patients; and increased subplacental vascularity was detected in 11 patients on T1- weighted images.In the study group,14 patients showed at least three of the above four features,and in all of them uterine bulging and(or) a focal outward contour bulge,heterogeneous signal intensity in the placenta and dark intraplacental bands on T2-weighted images were detected; one patient showed heterogeneous signal intensity in the placenta,dark intraplacental bands on T2-weighted images and increased subplacental vascularity.In the control group,none patient had three of the above features.Uterine bulging and(or) a focal outward contour bulge,heterogeneous signal intensity in the placenta,dark intraplacental bands on T2-weighted images and increased subplacental vascularity were detected in 3,6,3 and 4 patients (P=0.000,0.001,0.000 and 0.027 ),respectively.ConclusionsThe main MRI features of placenta accreta are uterine bulging and(or) a focal outward contour bulge,heterogeneous signal intensity in the placenta and dark intraplacental bands on T2-weighted images Besides,increased subplacental vascularity also could provide useful information for the diagnosis of placenta accreta.

Objective To investigate the predicting value of intermedin (IMD) for the prognosis of elderly sepsis patients.Methods A retrospective analysis was conducted. Forty-one patients with sepsis, aged ≥65 years, and admitted to geriatrics intensive care unit of Aerospace Center Hospital from April 2015 to December 2016 were enrolled. Thirty healthy patients were studied as control during the same time. The expression of C-reactive protein (CRP), procalcitonin (PCT) and IMD were tested within 24 hours during hospitalization, and the acute physiology and chronic health evaluation Ⅱ(APACHE Ⅱ) score and prognosis was evaluated. According to APACHE Ⅱ score, patients were divided into 3 groups, 10-20 score, 21-30 score, and > 30 score group. And based on the prognosis, the patients were divided into death group and survival group. The differences of expression levels of CRP, PCT and IMD in each group were assessed. The relationship of IMD and infection index was analyzed by Pearson correlation. Receiver operating characteristic curve (ROC) was used to evaluate the prognostic value of CRP, PCT and IMD in patients with sepsis.Results Compared with the control group, the levels of CRP, PCT and IMD were significantly higher in the sepsis patients [CRP (mg/L): 114.71±40.08 vs. 4.03±2.68, PCT (μg/L): 1.338±0.812 vs. 0.007±0.001, IMD (ng/L):43.03±9.67 vs. 16.77±2.06, allP < 0.01]. With the increase of APACHE Ⅱ score, the levels of PCT and IMD were gradually increased. In APACHE Ⅱ 10-20 score, 21-30 score, > 30 score groups, PCT (μg/L) were 0.397±0.129, 1.164±0.326, and 1.999±0.888, respectively (F = 19.392,P = 0.000); IMD (ng/L) were 29.12±5.60, 40.48±4.40,52.75±4.73, respectively (F = 33.310,P = 0.000). There was no significant difference in CRP among APACHE Ⅱ score groups (F = 2.137,P = 0.132). The level of IMD was positively correlated with CRP and PCT (r1 = 0.351,P1 = 0.024;r2 = 0.617,P2 = 0.000), and there was no correlation with temperature and white blood cell count (r1 = 0.063,P1 = 0.697;r2 = 0.064,P2 = 0.692). The expression of PCT and IMD in the death groups were significantly higher than the survival group [PCT (μg/L): 1.547±0.883 vs. 1.043±0.608, IMD (ng/L): 47.44±8.23 vs. 36.80±8.13, bothP < 0.05], while CRP was not significantly different. The area under the ROC curve [AUC (95% confidence interval, 95%CI)] of IMD was larger than that of PCT and CRP [0.809 (0.675-0.943) vs. 0.680 (0.511-0.849), 0.664 (0.490-0.838)]; when cut-off value of IMD was 41.58 ng/L, the sensitivity was 75.0% and the specificity was 82.4%.Conclusions The levels of CRP, PCT and IMD were increased in elderly sepsis patients, and IMD and PCT can better reflect the severity of sepsis. IMD is more valuable in predicting the prognosis of sepsis patients.

Objective To explore the effect of EBV infection on proliferation and invasiveness of gastric cancer cell. Method BGC823, an EBV-negative human gastric cancer cell line, was infected by EBV. The cell proliferation and ability of invasion were studied by MTT method and in vitro invasive assay, respectively. Cell cycle was investigated by flow cytometry. RT-PCR was used to detect the EBNAs, LMP1 and EBER1 in the infected cell. Result The A ratio of EBV-infected cells increased by 34. 34% and the population of invasive cells increased by 28.72%. The cell percentage of S phase, which was 36. 7% at control group cell, was increased to 41. 9% while the cell percentage of G0/G1 was decreased. EBNA1 and EBER1 were detected in EBV infected gastric cancer cells while EBNA2 and LMP1 were both negative. Conclusion Epstein-Barr virus infection promoted proliferation and upregulated invasion of human gastric cancer cell. EBV infection may play an important role in the carcinogenesis and progression of human gastric cancer.

Objective To design a new vacant drowning rescuer in self-help can be effective and free when swimming.Meth-ods Vacant drowning rescuer includes the vacant,life-saving device,the waist straps and the ropes.Results Vacant drowning res-cuer has light weight,high strength,and small size.It is secured to the swimmer′s waist through waist strap and easy to operate. Conclusion Vacant drowning rescuer provides the security for the water activity,which can realize self-help or save others.It can be universally applied for the majority of swimming enthusiasts.