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17. Additional file 1 of Association of pre-pregnancy body mass index and gestational weight gain with neonatal anogenital distance in a Chinese birth cohort

Author

Wang, Zhiyang, Niu, Jinbo, Ji, Honglei, Miao, Maohua, Yang, Limei, Chen, Xia, Li, Xiufeng, Song, Xiuxia, Chen, Aimin, Liang, Hong, and Yuan, Wei

Abstract

Additional file 1: Table S1. Number of subjects in separated groups in adjusted joint analyses. Table S2. Demographic characteristics of the included and excluded mother-newborn pairs. Table S3. Association between continuous pre-pregnancy BMI and anogenital distance (AGD) in newborns. Figure S1. Diagram of anatomical anogenital distance measurements in both boys and girls (adapted from [25]).

Published
2022
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28. EFFECTS OF SHEWANELLA ALGAE ON CORROSION OF Zn-Al-Cd ANODE

Author

Luan Xin, Hou Baorong, Zhang Jie, Sun Caixia, Duan Jizhou, and Song Xiuxia

Subjects
Materials science, biology, Mechanical Engineering, Metals and Alloys, Biofilm, Analytical chemistry, chemistry.chemical_element, Shewanella algae, Geotechnical Engineering and Engineering Geology, biology.organism_classification, Rust, Shewanella, Oxygen, Corrosion, Ferrous, chemistry, Mechanics of Materials, Bacteria, Nuclear chemistry
Abstract

Shewanella is a typical iron-reducing bacteria which can reduce insoluble ferric iron to soluble ferrous iron and consume oxygen, being considered as the reasons of corrosion inhibition. The main study on Shewanella algae (SA) is the degradation of environmentally harmful organic compounds and heavy metals, and there are very few reports on the interaction of metal corrosion and SA. In this paper, the bacteria isolated from yellow rust layer were identified as SA by using molecular biology techniques. The growth curve of SA was determined with spectrophotography. The results showed that the growth curve was divided into three phases: exponential growth phase, steady phase and decay phase. The effects of SA on corrosion of Zn-Al-Cd anode were investigated by using electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and fluorescence microscopy (FM). The results showed that corrosion potential for samples exposed to the culture medium containing SA was higher than that for samples exposed to the sterile culture medium during the whole experiment. R-ct value in the culture medium containing SA was much greater than that of anode in the sterile culture medium. The bacteria could inhibit the corrosion of the specimen. The reason was that a biofilm layer was formed on the sample surface and the oxygen was consumed through the metabolic activities of bacteria in the culture medium containing bacteria. The biofilm layer was formed on the 5th day in the culture medium containing bacteria. While in bacteria-free system, obvious corrosion pits and white corrosion products were seen on the sample surface. The complete biofilm was formed on 7th day, and it detached from the sample on 11th day because of the exhaustion of nutrients and oxygen, showing that the biofilm formation had a great relationship with the presence of nutrients and oxygen.

Published
2012

31. [A cross-sectional and factor analysis study on HIV, HBV and HIV/HBV infection in a Yi Prefecture, southwest China].

Author

Shi Y, Zhou Y, Nie S, Yang A, Xiao P, Song X, and Jiang Q

Abstract

Objective: To understand the epidemiological characteristics and related risk factors on HIV, HBV infection of people from the southwest province of China and to provide basic data for the development of related strategies., Methods: According to the information on current HIV epidemics, one township from the area was selected as the study field and all the adult population were surveyed using a questionnaire to collect social demographic data and information on infection-related factors., Results: A total of 2 290 adults were investigated and data showed as follows:the average HIV infection rate as 7.9% , the average HBV infection rate as 3.1%, and the average HIV/HBV co-infection rate as 1.2%. As for HIV infection, people whose yearly family gross income between 1 000 and 3 000 Yuan (OR = 0.28) or more than 5 000 Yuan (OR = 0.14) were less likely to be infected with HIV than those people whose annual family gross income less than 1 000 Yuan. People with educational level of primary school and above were more likely to carry HIV than those who were illiterate (OR = 3.28). People who had the history of migration were less likely to carry HIV than those who had not (OR = 0.33). People who had the history of being drug abusers were more likely to infect HIV than those who had not (OR = 46.32). People whose spouses had the history of using drugs were more likely to infect HIV than those who had not (OR = 3.52). People whose spouses had been infected with HIV were more likely to infect HIV than those who had not (OR = 9.56). As for HBV infection, people who had the history of migration were more likely to infect HBV(OR = 2.48). As for HIV/HBV co-infection, people whose spouses had the history of HIV infection were more likely to infect HIV/HBV co-infection than others who did not have the history (OR = 6.04)., Conclusion: There had been a serious HIV/AIDS epidemic in our study field. Other than taking measures as detection and vaccination on HBV, health education should be strengthened, together with measurements as needle exchange and methadone substitution therapy, to control the spread of AIDS.

Published
2014

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