Objective To discuss the application of cybernetics in hemodialysis nursing. Methods Cybernetics was applied to the standardized nursing quality management in 35 hemodialysis patients, namely to establish hemodialysis standard, weight the executive condition, correct deviation.The feed-forward control was emphasized in combination with the feedback control forming the feed forward-feedback control sys-tern in order to tighten the effect of the control. The dialysis indices before and after the intervention was compared. Results The average hematocfit and urea reduction rate greatly increased after cybernetics was applied to the standardized nursing quality management in 35 hemodialysis patients, but no change was seen in urea elimination index after the intervention. Conclusions Nursing quality can be enhanced by the application of cybernetics in hemodialysis.

Objectives To study the relationship of recurrent wheezing and obesity among infants. Methods In 118 recurrent wheezing infants, the growth level are assessed based on the WHO standard. Meanwhile, all the infants are divided into two subgroups (normal-weight, overweight/obese), and the tidal breath lung function (tidal breath flow volume loop) are analyzed. Results Among the infants of 1-3 years old, for the growth level, the recurrent wheezing infants have higher index of weight, but almost the same level of height, compared with the WHO standard. For the tidal breath lung function, tidal volume (VT/kg) is significantly impaired in overweight/obese subgroup in comparison to the normal-weight subgroup. But the ratio of time to peak tidal expiratory flow (tPF) to total expiratory time (tE) and ratio of volume to peak expiratory flow (VPF) to total expiratory volume (VE), which reflect the airway obstructions to a certain extent, have no statistical differences among the two subgroups. Conclusions Rather than the height index, the weight index is significantly higher in the recurrent wheezing infants than the level of WHO standard. Compared with normal-weight patients, the tidal volume of overweight/obese recurrent wheezing in overweight/obese group is lower, but no significant differences are found for other parameters of airway obstructions.

Objective To explore the relationship between nutrition status and activity of daily livingof elders in nursing homes and the mediating effect of physical activity. Methods From Apr to Sep in 2016,320 elders in nursing homes were selected and were surveyed using the standardized tools. The mediating effects were analyzed with PROCESS. Results The scores of elders′ nutrition status, physical function and activities of daily living were (11.88±2.27), (3.61±3.51), (79.13±26.00) points, respectively. And there were 66.9％ elders suffering from activities of living life impaired. The nutrition status were significantly positive correlated with physical function and activities of daily living of elders, and the physical function were significantly positive correlated with activities of daily living of elders. The physical function partly mediated the association between nutrition status and activities of daily living, and the effect was reached to 39.1％. Conclusions The elders′activities of daily life was poor in nursing home in China. The physical function partly mediated the association between nutrition status and activities of daily living. The related departments could combine the long time and short time plans targeting at improving of nutrition status and physical function respectively, to enhance the outcomes of elders in nursing homes.

Objective To understand the indoor particulate matter concentration in accommodation places in Liuzhou City, and to analyze the change rule and influencing factors of the concentration. Methods Eighteen hotels in Liuzhou were selected as monitoring objects by stratified random sampling method, and indoor particulate matter concentration and related factors were monitored from 2016 to 2021. Results The indoor PM_2.5 concentration was 33(20-49) μg/m³, and the qualified rate was 89.1%. The concentration of PM₁₀ was 70 (42-102) μg/m3, and the qualified rate was 88.6%. There were significant differences in indoor PM_2.5 and PM₁₀ mass concentration and qualification rate in different years (P<0.05). The indoor PM_2.5 and PM₁₀ concentrations were the highest in winter and spring, and the lowest in summer, with a statistically significant difference (P<0.05). Compared with the mass concentration of particulate matter in different levels of accommodation, the concentration of particulate matter in three stars and above was the lowest, and that in three stars and below was the highest, with a statistically significant difference (P<0.05). Univariate analysis showed that indoor PM_2.5 concentration was highly correlated with PM₁₀ concentration (r=0.996, P<0.05). Indoor PM_2.5 and PM₁₀ concentrations were positively correlated with CO, total number of bacteria in the air, CO₂, and noise, and negatively correlated with temperature. Multivariate regression analysis showed that there was a high positive correlation between indoor PM_2.5 and PM₁₀ mass concentrations, which was correlated with seasons (P<0.05). Conclusion From 2016 to 2021, indoor particulate pollution exists in accommodation places in Liuzhou, but the pollution is relatively light. The mass concentration decreases and the qualification rate increases year by year. There is a high positive correlation between indoor PM_2.5 and PM₁₀ mass concentrations.