Impact of Winter Transit Air Masses on the Sources and Composition Characteristics of Atmospheric Pollution in Hengyang

Through the integration and analysis platform of particulate matter components,a preliminary comparison was conducted on the pollution contribution of the three winter transit air masses in December to environmental quality,and the changes and related relationships of water-soluble ions and particulate matter elements were analyzed.The results showed that winter transit air masses had a significant impact on the air quality in Hengyang.In the quantitative comparison of the primary pollutant contribution during the transit period of air masses,local sources and transit sources each accounted for half,and the impact of transit source on ambient air quality was much greater than that of seasonal base increase.Fine particulate matter was closely related to secondary ions,and particulate matter was closely related to primary ions.The transit of air masses promoted the improvement of secondary ion conversion rate,and the unit increment of fine particulate matter was greater than that of particulate matter.During the transit period,the mass concentrations of most water-soluble ions and most particulate matter elements maintained synchronous growth,with a superimposed effect.The composition ratio of organic carbon and nitrate ions increased,while the composition ratio of ammonia and sulfate ions decreased.Both disposable ions and secondary conversions in the composition of PM_(2.5)had increases and decreases.The high conversion rate of nitrate and the high composition ratio of ammonia radical in Hengyang indicated that transportation source factors had a significant impact on the local environmental quality of Hengyang.

Summary of Home Nursing for Lens Dislocation Among Patients with Marfan Syndrome

Marfan syndrome is a rare genetic disease,and the condition of most patients deteriorates with age.The lesions are mainly cardiovascular,skeletal,and ocular lesions.Its clinical manifestations are characterized by congenital heart disease,ectopic lens,slender body,slender limbs,spider fingers(toes),and general muscle dysplasia.In the early stage of this disease,when the symptoms are not yet clearly manifested,some patients came to the hospital for treatment due to decreased vision.According to the particularity of crystal dislocation patients with Marfan syndrome,this article provides home nursing education in terms of physiological and psychological aspects,and builds an effective home nursing model to promote the physical and mental recovery of patients.

Effect of electroacupuncture at distal-proximal acupoint combinations on spinal interleukin-1 beta in a rat model of neuropathic pain

Objective:Pain from herniated disc is a common type of neuropathic pain.This study investigated whether electroacupuncture (EA) stimulation at distal-proximal combinations of acupoints in the rat model of neuropathic pain modulates spinal interleukin-1 beta (IL-1β) to induce acupuncture analgesia and possibly serve as a pain-relief modality for herniated disc.Methods:A rat model of neuropathic pain was established.Rats were randomly divided into normal,model,sham,EA 1,EA 2,and EA 3 groups.EA 1 rats were needled at bilateral ExB2,BL25,BL40,and BL60 acupoints.EA 2 rats Were needled at bilateral BL40 and BL60.EA 3 rats were needled at bilateral L5 Ex-B2 and BL25.EA stimulation was administered once daily over 7 days.Mechanical withdrawal threshold from noxious mechanical stimulation was measured 1 day preoperatively and at 3,5,and7 days postoperatively.After 7 days of intervention,enzyme-linked immunosorbent assay (ELISA) was used to quantify IL-1β in the spinal cord.Results:Mechanical withdrawal threshold of rats in the model group decreased at 3 days postoperatively when compared with the normal group (P < 0.01),lasting 7 days postoperatively.Mechanical withdrawal thresholds in the EA 1,EA 2,and EA 3 groups were elevated over the model group (P < 0.05;P < 0.01).No obvious differences were found between EA 1,EA 2,and EA 3 groups.ELISA demonstrated an increase in IL-1β in the spinal cord of rats in the model group compared with the normal group (P < 0.01).EA treatment attenuated the increase in spinal IL-1β in the model group.Expression of spinal IL-1β was significantly lower in EA 1,EA 2,and EA 3 groups.Conclusion:EA at distal + proximal acupoints,distal points,as well as proximal points attenuated upregulation of spinal IL-1β,alleviated the extent of neuropathic pain hypersensitivity,and promoted mechanical withdrawal threshold,resulting in EA analgesia.