Oxygen is used broadly in different levels of hospital in the whole country. The method of oxygen supply system changes from bottled, liquid to machine-made. The theories of these methods are introduced, and the danger of conflagration among these methods are especially analyzed and compared. To ensure the fire control, precautions are established so as to serve hospital better.

Objective To investigate the effect of application of 3D printing technology in the rhinoplastic prothesis with the help of the laser scanning 3D technology.Methods Before the rhinoplastic prothesis,we got the whole facial morphology of patients by laser scanning technology,and printed out the facial model which was 1:1 with the real and then discussed with patients to confirm the ideal nose three-dimensional effect.In the process of operation,doctors were guided by the data for the procedure.Results Among 33 patients who were followed up postoperatively,only one patient's nosal tip dropped,then were repaired with her ear cartilage,both of us found satisfactory effect after repair,and without postoperative complications.The rest 32 patients were satisfied with their nose.Conclusions The laser scanning 3D technology is worth trying and using in plastic surgery.

Natural killer (NK) cells, a type of cytotoxic lymphocytes, can infiltrate into ischemic brain and exacerbate neuronal cell death. Astragaloside IV (ASIV) is the major bioactive ingredient of Astragalus membranaceus, a Chinese herbal medicine, and possesses potent immunomodulatory and neuroprotective properties. This study investigated the effects of ASIV on post-ischemic brain infiltration and activation of NK cells. ASIV reduced brain infarction and alleviated functional deficits in MCAO rats, and these beneficial effects persisted for at least 7 days. Abundant NK cells infiltrated into the ischemic hemisphere on day 1 after brain ischemia, and this infiltration was suppressed by ASIV. Strikingly, ASIV reversed NK cell deficiency in the spleen and blood after brain ischemia. ASIV inhibited astrocyte-derived CCL2 upregulation and reduced CCR2
Animals ; Brain ; Histone Deacetylases ; Killer Cells, Natural ; Rats ; Saponins/pharmacology* ; Triterpenes/pharmacology*