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In order to explore the dynamic similarity model test method different from atmospheric boundary layer wind tunnel and shaking table model test, in accordance with dynamic similar theory, an elastic model of a transmission tower with 1/35 scale and 5.2m height has been designed and manufactured with thin-walled circular pipes of high-density polyethylene. The model has been tested in the laboratory for time and frequency domain responses under suddenly unloading, essential dynamic characteristic of the scale model is also analysed and compared with that of its prototype tower, the dynamic similarity of the two is confirmed. By the mathematical deduction of Wigner-Ville Distribution (WVD) signal terms of structural free vibration response, the new damage detection index with clear physical signification is forwarded for damage detection for transmission tower, the damage detection test of the scale model of transmission tower is then carried out, totally three damage cases, related with chord rod weakening, flank rods failure, different damage degrees and positions, are tested to validate the proposed damage detection index.

Resistive switching with a self-rectifying feature is one of the most effective solutions to overcome the crosstalk issue in a crossbar array. In this paper, a memory device based on Pt/TiOx/W structure with self-rectifying property is demonstrated for write-once-read-many-times (WORM) memory application. After programming, the devices exhibit excellent uniformity and keep in the low resistance state (LRS) permanently with a rectification ratio as high as 104 at ± 1 V. The self-rectifying resistive switching behavior can be attributed to the Ohmic contact at TiOx/W interface and the Schottky contact at Pt/TiOx interface. The results in this paper demonstrate the potential application of TiOx-based WORM memory device in crossbar arrays. [ABSTRACT FROM AUTHOR]

Objective: To investigate the clinical characteristics of pregnancy with pneumonia. Methods: A retrospective review of all admissions from January 1,2005 to December 30,2013 included 23 women who had been hospitalized with pneumonia during pregnancy in our hospital. 23 cases were divided into three groups according the first trimester, the second trimester and the third trimester. Data of clinical manifestations, laboratory examinations, treatment and prognosis of these patients were obtained and studied. Results: The incidence of respiratory system disease during pregnancy was 3.652%,pneumonia accounted for 0.965%,the incidence of community-acquired pneumonia (CAP) was 78.3% (18/23), hospital-acquired pneumonia (HAP) was 21.7% (5/23). 2 cases (8.7%) were in the first trimester, 10 cases (43.5%) were in the second trimester, and 11 cases (47.8%) were in the third trimester. It suggested that the incidence of pregnancy with pneumonia accompanied with the trimester. The incidences of cough, fever, and shortness of breath and expectoration were 82.6% (19/23), .2% (15/23), 60.9% (14/23) and 43.5% (10/23), and shortness of breath is particularly evident in the third trimester, the difference was statistically significant (P<0.05), but cough, expectoration, chills, fever and other symptoms has no significant differences in different trimesters (P>0.05), the differences of blood count and biochemistry index were not statistically different in the different trimesters (P>0.05). On the other hand, cases with anemia was 43.5%(10/23), which was one of the risk factors of pregnant with pneumonia. The incidence of spontaneous abortion and premature delivery were 8.7% (2/23), and mature delivery were 82.6% (19/23),and no neonatal death. Conclusions: Pneumonia may be more severe in the pregnant woman, and carries significant risk to both mother and fetus. The incidence of CAP in the third trimester is higher than in the first and second trimester, and the clinical manifestations were similar with nonpregnant women, but has higher asthma incidence in the third trimester with pneumonia. Anemia is one of the risk factors of pregnancy complicated with pneumonia. [ABSTRACT FROM AUTHOR]