Microplastics in the Atmosphere and Water Bodies of Coastal Agglomerations: A Mini-Review.

Microplastics are ubiquitously in various environments from the equator to the poles. Coastal agglomerations act as both a source and sink connecting the global microplastic cycles of oceans and continents. While the problem of microplastics is particularly severe and complex in the coastal zones, where both inland and marine pollution are concentrated, the present study aimed to provide hot topics and trends of coastal urban microplastic studies and to review the researches on microplastic pollution in the atmosphere and water bodies in coastal agglomerations in terms of characteristics, behavior, and health threat of microplastics. The results of the bibliometric analysis showed an increase in the annual output of microplastic research. Research hot topics and clusters were analyzed using the VOSviewer. Characteristics of microplastics varied in abundance, size, and polymer type in different environments and countries. Furthermore, coastal cities are taken as a system to sort out the input, output, and internal transmission pathways of microplastics. The health threat of microplastics to urban residents was briefly reviewed and the exposure and health risks of microplastics to infants and young children were of particular concern. Detailed and comprehensive studies on intervention and reduction in the transmission of microplastics between the atmosphere and water bodies, whether microplastics are harmful to infants and young children, and measures to reduce the risk of microplastic exposure are needed.

Insights into the Role of Na+ on the Transformation of Gypsum into α-Hemihydrate Whiskers in Alcohol-Water Systems.

Alcohol-water solution-mediated transformation of gypsum into α-hemihydrate (α-HH) whiskers provides a green alternative for the high-value-added recycling of flue gas desulfurization (FGD) gypsum. However, the role of non-lattice cations during the transformation is still unclear. We report an evolution from "boosting-retarding" to "boosting-retarding-boosting" and finally to "boosting only" effect of non-lattice Na+ functioned by the concentration of ethylene glycol (EG) in water solutions. The driving force increased almost linearly upon the introduction of Na+ through the formation of ion pairs, and a higher slope was obtained at a higher EG concentration. Adsorption of Na+ ions and solidification of eugsterite on gypsum surfaces blocked the nucleation sites of α-HH. The retarding effect first rapidly increased and gradually approached a limit, following a parabolic trend after Na+ ions were introduced. Pentasalt, with a structure similar to that of α-HH, precipitated on the gypsum surface at higher c(Na+). The interaction of the driving force and the structural evolution of calcium sulfate ionic clusters accounts for the evolution of transformation kinetics. The retardation zone was compressed with the increase in EG volume ratios, and a monotonic boosting effect upon Na+ was observed at a 35.0 vol % of EG. Nucleation kinetics dominates the aspect ratio of α-HH whiskers. This study may provide a significant guidance for the utilization of FGD gypsum.

An analysis of the current educational status and future training needs of China's rural doctors in 2011.

OBJECTIVES: To analyse the educational status and future training needs of China's rural doctors and provide a basis to improve their future training. METHODS: A cross-sectional epidemiological survey was used for the analysis, and 17 954 rural doctors chosen randomly from the eastern, central and western regions of China in 2009-2010 were surveyed to ascertain their average training time and the methods used for and content of their training. RESULTS: In general, 8671/17 778 (48.77%) of respondents received less than 12 days of training in a year. Conference sessions seemed to be the major route of training, with 10 150/17 925 respondents (56.62%). Clinical skills, with a response rate of 14 441/17 926 (80.56%), seemed to be the most popular training content. With regard to the general needs for training time received, 6547/18 255 (35.86%) of respondents hoped the average training time received a year would be less than 12 days; on-site guidance from a senior doctor was the most popular training method with response rate of 10 109/17 976 (56.24%), and clinical skills was what rural doctors wished to study the most, with a positive response of 16 744/17 962 (93.22%). Statistically significant differences existed in the current status and training time, training method and training content needs of China's rural doctors. CONCLUSIONS: Our results suggest that the training status and needs of China's rural doctors are still disjointed; measures including the introduction of remote education and clinical further education, extended training time and more clinical skills training should be adopted.

Actual causes of death in Chaoyang District of Beijing, China, 2007.

OBJECTIVES: To identify and quantify major external (non-genetic) factors that contribute to death in Chaoyang District of Beijing, China in 2007. METHODS: The death registration data reported to the Center of Disease Control and Prevention of Chaoyang District of Beijing, China, during the year 2007, were obtained. The analysis was conducted in 2009 using the health risk factors identified by the World Health Report 2002 and the population attributable fractions of mortality from Global burden of disease and risk factors. The estimates of actual causes of death attributable to each risk factor were calculated by multiplying the population attributable fractions of mortality by the corresponding number of deaths of the subgroup or total population. RESULTS: The five leading actual causes of death in Chaoyang District of Beijing, China in 2007 were high blood pressure (2159 deaths, 18%), smoking (990, 8%), low fruit and vegetable consumption (968, 8%), high cholesterol (891, 7%), and physical inactivity (629, 5%). The pattern and ordering of these leading causes vary with sex and age specific subgroups. CONCLUSIONS: More than half of the total number of deaths in Chaoyang District in 2007 could be attributed to a few major preventable risk factors. Although the study focused on only one district of Beijing in one single year, and is by no means comprehensive, its findings suggest that public health policies and programmes in China should address these public health concerns by focusing on these largely preventable risk factors for primary prevention.

The epidemiological study of women with urinary incontinence and risk factors for stress urinary incontinence in China.

OBJECTIVE: The aim of this study was to evaluate the prevalence and associated risk factors of urinary incontinence (UI) in Chinese women. METHODS: In the cross-sectional survey, 20,000 Chinese women 20 years or older were randomly selected and interviewed with modified Bristol Female Lower Urinary Tract Symptoms questionnaires to estimate population prevalence rates and identify potential risk factors. RESULTS: A total of 19,024 women were included in the analysis and 976 excluded; qualified rate is 95% (19,024/20,000). Of the Chinese women aged from 20 to 99 years (mean +/- SD, 45 +/- 16 y), the overall prevalence rate of UI was 30.9%. Estimates of stress urinary incontinence (SUI), urge urinary incontinence, and mixed urinary incontinence prevalence were 18.9%, 2.6%, and 9.4%, with a corresponding proportional distribution of 61%, 8%, and 31%, respectively. The prevalence of mixed urinary incontinence increased with aging, whereas the prevalence of SUI peaked in the group of women aged 50 years and that of urge urinary incontinence in the group of women aged 70 years. Only 25% of women have consulted doctors on this issue. Through multivariable logistic regression analysis, we identified age, vaginal delivery, multiparity, alcohol consumption, central obesity (women's waist circumference, >/=80 cm), constipation, chronic pelvic pain, history of respiratory disease, gynecological events, pelvic surgery, and perimenopause and postmenopause status as potential risk factors for SUI, among which age, vaginal delivery, and multiparity are three major risk factors. CONCLUSIONS: Our findings suggest that the prevalence of UI is high in China, with SUI as the most common subtype. Age, vaginal delivery, and others are risk factors for SUI.

[Development of a presenteeism questionnaire for skilled workers at high-technology enterprises].

OBJECTIVE: To develop a presenteeism questionnaire for Chinese high-technology skilled workers. METHODS: Methods being used would include literature review, face-to-face in depth interview, experts' consultation in developing the questionnaire. RESULTS: The presenteeism questionnaire includes two sections;one on employee's general health condition and the second one is a survey on the influences of employees'health conditions on their productivity. The first section includes 55 terms and 8 dimensionalities as below: Ache, Symptoms, Sleeping problem, Attention, Bad emotion, Pressure, Fatigue, Social adapting. These dimensionalities Cronbach's alpha are 0.79, 0.83, 0.75, 0.69, 0.83, 0.86, 0.80, 0.88 respectively and their half Spearman-Browns are 0.78, 0.75, 0.61, 0.62, 0.82, 0.81, 0.77, 0.88, respectively. Goodness of fit test model indices are as below: chi(2)/df -3.68, normed fit index 0.95, non-normed fit index 0.96, compatative fit index 0.96, standardized root mean residual 0.05, root mean square error of approximation 0.05. The relate-coefficient with SF-36 is 0.55. 42.77% of employees having received the survey, claim that their health problem do not influence their productivity, and 55.72% of them claiming that their productivity are reduced to 50%-90% because of their health problems while another 1.51% of them claim that their productivity reduced more than 50%. 84.5% of the interviewees claim that they have never been absent at work because of health problems, and 15.3% of them claim that their total hours of absence are between 0 and 100. Only 0.2% of the workers claim that the total hours of absence are more than 100. CONCLUSION: The developed presenteeism shows good reliability and higher validity, so can be used to measure the presenteeism of skilled workers working at high-technology enterprises.

An analysis of hospital preparedness capacity for public health emergency in four regions of China: Beijing, Shandong, Guangxi, and Hainan.

BACKGROUND: Hospital preparedness is critical for the early detection and management of public health emergency (PHE). Understanding the current status of PHE preparedness is the first step in planning to enhance hospitals' capacities for emergency response. The objective of this study is to understand the current status of hospital PHE preparedness in China. METHODS: Four hundred hospitals in four city and provinces of China were surveyed using a standardized questionnaire. Data related to hospital demographic data; PHE preparation; response to PHE in community; stockpiles of drugs and materials; detection and identification of PHE; procedures for medical treatment; laboratory diagnosis and management; staff training; and risk communication were collected and analyzed. RESULTS: Valid responses were received from 318 (79.5%) of the 400 hospitals surveyed. Of the valid responses, 264 (85.2%) hospitals had emergency plans; 93.3% had command centres and personnel for PHE; 22.9% included community organisations during the training for PHE; 97.4% could transport needed medical staff to a PHE; 53.1% had evaluated stockpiles of drugs; 61.5% had evaluated their supply systems; 55.5% had developed surveillance systems; and 74.6% could monitor the abnormity(See in appendix). Physicians in 80.2% of the analyzed hospitals reported up-to-date knowledge of their institution's PHE protocol. Of the 318 respondents, 97.4% followed strict laboratory regulations, however, only about 33.5% had protocols for suspected samples. Furthermore, only 59.0% could isolate and identify salmonella and staphylococcus and less than 5% could isolate and identify human H5N1 avian flu and SARS. Staff training or drill programs were reported in 94.5% of the institutions; 50.3% periodically assessed the efficacy of staff training; 45% had experts to provide psychological counselling; 12.1% had provided training for their medical staff to assess PHE-related stress. All of the above capacities related to the demographic characteristics of hospitals and will be discussed in-depth in this paper. CONCLUSION: Our survey suggested that, at the time of the survey, hospital preparedness for PHE in China was at an early stage of development. Comprehensive measures should be taken to enhance hospital capacity in the prevention and management of PHE.

An Analysis of Hospital Preparedness Capacity for Public Health Emergency in four Regions of China: Beijing, Shandong, Guangxi and Hainan

Background: Hospital preparedness is critical for the early detection and management of public health emergency (PHE). Understandig the current status of PHE preparedness is the first steep in planning to enhance hospitals capacities for emergency response. The objective of this study is to understand the current status of hospital PHE preparedness in China. Methods: Four hundred hospitals in four city and provinces of China were surveyed using a standardized questionnaire. Data related to hospital demographic data; PHE preparation; response to PHE in community; stockpiles of drugs and materials; detection and identification of PHE; procedures for medical treatment; laboratory diangnosis and management; staff training; and risk communication were collected and analyzed. Results: Valid responses were received from 318 (79.5%) of the 400 hospitals surveyed. Of the valid responses, 264 (85.2%) hospitals had emergency plans; 93.3% had command centres and personnel for PHE; 22.9% included community organisations during the training for PHE; 97.4% could transport needed medical staff to a PHE; 53.1% had evaluated stockpiles of drugs; 61.5% had evaluated their supply systems; 55.5% had developed surveillance systems; and 74.6% could monitor the abnormity (See appendix). Physicians in 80.2% of the analyzed hospitals reported up-to-date knowledge of their institutions PHE protocol. Of the 318 respondents, 97.4% followed strict laboratory regulations, however, only about 33.5% had protocols for suspected samples. Furthermore, only 59.0% could isolate and identify salmonella and staphylococcus and less than 5% could isolate and identify human H5NI avian flu and SARS. Staff training or drill programs were reported in 94.5% of the instituions; 50.3% periodically assessed the efficacy of staff training; 45% had experts to provide psychological counselling; 12.1% had provided training for their modical staff to assess PHE-related stress. All of the above capacities...

The prevalence of and potential risk factors for female urinary incontinence in Beijing, China.

OBJECTIVES: To survey and evaluate the prevalence and potential risk factors of female urinary incontinence (UI) in Beijing, China. DESIGN: A population-based cross-sectional study was performed from April to July 2005. We randomly sampled 1.0% of female residents aged 20 years and older from year 2000 national census data, totaling 5,300 women. All of the women were interviewed face to face using a modified questionnaire based on the International Consultation on Incontinence Questionnaire-Female Lower Urinary Tract Symptoms. Data were collected and analyzed. RESULTS: The overall prevalence of female UI was 38.5%. Prevalence rates of female stress urinary incontinence (SUI), female urge urinary incontinence, and female mixed urinary incontinence were 22.9%, 2.8%, and 12.4%, respectively. The prevalence rate of female UI was more than 50% in postmenopausal women. In multiple logistic models, multiple vaginal deliveries (odds ratio [OR]=2.1; 95% CI: 1.443-3.179), age (OR=1.7; 95% CI: 1.039-2.742), postmenopausal status (OR=1.5; 95% CI: 1.182-1.983), chronic pelvic pain (OR=1.4; 95% CI: 1.134-1.814), obesity (OR=1.4; 95% CI: 1.205-1.721), lack of exercise (OR=1.3; 95% CI: 1.105-1.509), constipation (OR=1.3; 95% CI: 1.109-1.586), and hypertension (OR=1.2; 95% CI: 1.053-1.474) were identified as potential risk factors of female SUI. No association between female SUI and offspring birth weight, occupation, or chronic diseases was observed in this study. Only 12.8% of women with UI and 7.4% of women with SUI seek medical help. CONCLUSIONS: UI is a major disorder that affects female quality of life. The prevalence of female UI is high (38.5%) in Beijing. Among the different types of UI, SUI was the most prevalent (22.9%). Potential risk factors identified for female SUI were multiple vaginal deliveries, age, postmenopausal status, chronic pelvic pain, obesity, lack of exercise, constipation, and hypertension.

Potential opportunities to enhance syphilis surveillance system.

BACKGROUND: The changes in the US health care system during the last decade may have altered the access to and quality of syphilis patient care and syphilis patient data collection. GOAL: To identify potential opportunities to enhance syphilis surveillance system. DESIGN: 1994-1998 TennCare utilization data regarding primary and secondary syphilis patients matched with the health department confirmed syphilis cases by name, race, and date of birth and audited with the department's clinic data to examine the issues of underreporting, misdiagnosis, and miscoding. RESULTS: Of 349 patients diagnosed by TennCare providers during 1994-1998, 312 (89.4%) were not matched with the 803 reported cases in the health department surveillance system during the same period. CONCLUSIONS: A large number of TennCare provider-diagnosed syphilis patients were not known to the health department. Whether it is due to underreporting, miscoding, misdiagnosis, or a combination is unknown. Further investigation offers an avenue to enhance syphilis surveillance system.