AIM: To dissociate and determine the chemical components of volatile oil from Salsola col-lina Pall.in Shandong Province METHODS: The chemical components of volatile oil were analyzed by gaschromatography-massspectraphy(GC/MS). RESULTS: Fifty-nine constituents were identified,which accounted for 87.63% of volatile oil,the major chemical componets in the volatile oil were terpenes and terpene ramifications. CONCLUSION: This method is reliable,stable and repeatable.the data can provide resources for expolitation of Salsola col-lina Pall.

Objective:To explore the effect of grasping force circle training based on knowledge, attitude and practice theory in lung cancer patients with peripherally inserted central catheter.Methods:From March 2020 to December 2021, a total of 90 lung cancer patients with peripherally inserted central catheter in the Second People's Hospital of Datong were selected as the research objects using the convenient sampling method, and were divided into the control group and the observation group by the random number table method, with 45 cases each. The control group adopted routine grasping force circle training, and the observation group conducted grasping force circle training based on knowledge, attitude and practice theory. The scores of knowledge, attitude and practice, self-management ability and the incidence of complications were compared between the two groups.Results:After intervention, the scores of knowledge, attitude and behavior of the two groups were higher than those before intervention, and the scores of the observation group were higher than those of the control group, and the differences were statistically significant ( P<0.05). After intervention, the scores of compliance of catheter maintenance, abnormal handling, confidence of catheter management, exercise of catheter, daily observation of catheter, information acquisition and daily life of catheter of the two groups were higher than those before intervention, and the scores of the observation group were higher than those of the control group, and the differences were statistically significant ( P<0.05). After intervention, the incidence of complications of the observation group was lower than that of the control group, and the difference was statistically significant ( P<0.05) . Conclusions:Grasping force circle training based on knowledge, attitude and practice theory can improve the knowledge, attitude and practice level of lung cancer patients with peripherally inserted central catheter, improve their self-management ability, and reduce the incidence of complications.

Objective Nowadays, radioactive xenon isotopes, including ^131mXe, ^133mXe, ¹³³Xe, and ¹³⁵Xe, are primarily released into the atmosphere through various reactor operation and major accidents of reactors. To improve the online monitoring capability of xenon in nuclear facilities and their gaseous effluents, a highly sensitive online xenon monitoring system was developed to monitor, warn, and alarm the activity concentration of radioactive xenon. Methods The online monitoring system for radioactive xenon gas in nuclear facilities was established using xenon membrane separation and concentration, xenon high-efficiency selective adsorption, and low-background gamma-ray spectrometry analysis methods. Results Under the operation mode of one-hour sampling and one-hour measuring, the minimum detectable activity concentration of the radioactive xenon online monitoring system for ¹³³Xe was approximately (1.43 ± 0.03) Bq/m³. Conclusion This system can be effectively used for online monitoring of xenon activity concentration in nuclear facilities such as nuclear power plants and isotope production reactors, as well as in gaseous effluents. It helps improve the safety level of personnel, the environment, and nuclear facilities.