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Wearable mobile health (mHealth) technologies are a convenient and cost-effective community-based intervention to improve management of hypertension in resource-limited populations. This study was designed to evaluate user characteristics of blood pressure (BP) wearable technology among a community-based population in a rural area of China. During the period of April through July 2018, a self-monitoring intervention program for hypertension control was implemented in a remote area of central China. Participants completed a cross-sectional survey which included demographic characteristics, Technology Fluency, the Compliance of Hypertensive Patients’ Scale, and the Health-related Quality of Life Survey. Participants were given a wearable BP-monitoring device which wirelessly uploaded data and monitored for 1 month. Participants (n = 317) were 64.57 years (SD = 11.68), 53.94% were male. During the 30-day monitoring, 52.68% of the sample uploaded BP wristband data daily were identified as “BP device users.” No differences existed between device users and nonusers related to cardiovascular health measurements, technology fluency, and health-related quality of life. Device users were more likely to report a higher level of hypertension compliance. Individuals reporting a higher level of compliance in hypertension management are more likely to interact with a wearable BP-monitoring device than persons with lower levels of compliance. Further evaluation of mobile health systems involving a wearable device as part of a hypertension management program is needed in a resource-limited community-based setting.

Propionate is an important intermediate product during the methane fermentation of organic matter, and its degradation is crucial for maintaining the performance of an anaerobic digester. In order to understand the effect of temperature on propionate degradation, an upflow anaerobic sludge blanket (UASB) reactor with synthetic wastewater containing propionate as a sole carbon source was introduced. Under the hydraulic retention time (HRT) of 10 h and influent propionate of 2,000 mg/l condition, propionate removal was above 94% at 30-35°C, whereas propionate conversion was inhibited when temperature was suddenly decreased stepwise from 30°C to 25°C, to 20°C, and then to 18°C. After a long-term operation, the propionate removal at 25°C resumed to the value at 30- 35°C, whereas that at 20°C and 18°C was still lower than the value at 35°C by 8.1% and 20.7%, respectively. Microbial community composition analysis showed that Syntrophobacter and Pelotomaculum were the major propionate-oxidizing bacteria (POB), and most POB had not changed with temperature decrease in the UASB. However, two POB were enriched at 18°C, indicating they were low temperature tolerant. Methanosaeta and Methanospirillum were the dominant methanogens in this UASB and remained constant during temperature decrease. Although the POB and methanogenic composition hardly changed with temperature decrease, the specific CODPro removal rate of anaerobic sludge (SCRR) was reduced by 21.4%-46.4% compared with the control (35°C) in this system.