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The accelerated evolution of the Internet of Things has brought new challenges to the gas sensors, which are required to work persistently under harsh conditions, like high humidity. However, currently, it is quite challenging to solve the hindrance of the trade-off between gas-sensing performance and anti-humidity ability of the chemiresistive gas sensors. Herein, hydrophobic inorganic CeO 2 /SnO 2 heterostructure films were prepared by depositing the CeO 2 layers with a thickness of a few nanometers onto the SnO 2 film via a magnetron sputtering method. The sensors based on the CeO 2 /SnO 2 heterostructure films demonstrated excellent gas-sensing performance toward trimethylamine (TEA) with high response, wide detection range (0.04− 500 ppm), low record detection limit (0.04 ppm), ideal reproducibility, and long-term stability, while concurrently possessing promising antihumidity ability. A portable, wireless TEA-sensing system containing the CeO 2 /SnO 2 sensor was constructed to realize the real-time monitoring of trace concentration of the volatiles released from a fish. This work provides a novel strategy to prepare advanced chemiresistive gas sensors for humidity-independent detection of harmful gases and vapors and will accelerate their commercialization process in the field of food safety and public health.

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The global population is ageing, and the average age of patients with kidney disease is increasing. Surveys in Western countries showed that people over the age of 75 years have the highest incidence of end-stage kidney disease (Evans et al., 2018;Saran et al., 2019).After chronic kidney disease progresses to end-stage kidney disease, most patients choose to be treated with haemodialysis. The prevalence of sarcopenia in elderly patients on maintenance haemodialysis (MHD) is elevated due to the reduced muscle mass and physical activity caused by age and factors related to treatment (Lou et al., 2019). Previous studies have shown that the prevalence of sarcopenia in elderly MHD patients is 33.7%~37% (Giglio et al., 2018;Kim et al., 2014). | BackgroundSarcopenia, which is characterized by a reduction in skeletal muscle, is a progressive and widespread condition that mainly

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AimTo investigate the current status of COVID‐19 vaccination in maintenance hemodialysis (MHD) patients and its influencing factors.MethodsIn total, 585 patients undergoing regular hemodialysis in Sichuan Province of China from January to March 2022 were selected to complete a questionnaire survey on their knowledge, attitudes and practices regarding COVID‐19 vaccination. Independent t tests and logistic multivariate analysis were used to analyze the influencing factors of COVID‐19 vaccination in hemodialysis patients.ResultsThe survey showed that 37.44% of MHD patients had been vaccinated with the COVID‐19 vaccine. Being married was associated with COVID‐19 vaccination in patients with MHD (odds ratio [OR] = 1.969 95% CI 0 .870 ~ 4.453). MHD patients living in county areas have higher rates of COVID‐19 vaccination (OR = 0.572 95% CI 0.301 ~ 1.087). Family /relatives/friends who are healthcare workers are associated with COVID‐19 vaccination for MHD patients (OR = 1.840 95% CI 1.140 ~ 2.970). Other vaccination history within 5 years was a factor in COVID‐19 vaccination for MHD patients (OR = 5.592 95% CI 2.997 ~ 10.434). Attitude (OR = 0.885 95% CI 0.808 ~ 0.905), and practice (OR = 0.756 95% CI 0.697 ~ 0.819) scores on the COVID‐19 vaccination knowledge and practice questionnaire were related to the vaccination status of MHD patients.ConclusionsMHD patients had lower rates of COVID‐19 vaccination. Marital status, living environment, whether family/relatives/friends were medical workers, and the score of the COVID‐19 vaccine knowledge and practice questionnaire were the factors influencing their vaccination status. Clinical attention should be given to the adverse reactions of COVID‐19 vaccination in MHD patients to improve the awareness of primary medical staff on hemodialysis, and families and society should pay more attention to COVID‐19 vaccination in MHD patients.