Objective To investigate the distribution of air microorganisms in soldies′living quarters of one under-ground tunnel during airtight survival training .Methods Anderson sampling was carried out in Area A and Area B ( living quarters) and Area C (a toilet) at designated time and place.After sampling, the culture and identification of microorgan-isms were finished .Results ①In the living quarters of the whole underground tunnel , the total number of bacteria ranged from 125 to 37 800/m3,but it was 2692, 1844 and 2199/m3, respectively in Area A, B and C.The mean number of bac-teria was 2245/m3 .The number of fungi ranged from 0 to 10 017/m3 .The total number of fungi of Area A , B and C was 1064 , 883 and 1011/m3 .The mean number was 986/m3 .②The number of bacteria in the living areas presented three fea-tures:the total bacteria showed overall three peaksin Area A and B, buttwin peaksin Area C.In Area A and B, the number of bacteria exhibited low colony at first but fluctuated heavily later .In Area C, it decreased gradually to the mini-mum,and the fungi showed a wavy and irregular trend .③The air microbial species included cocci ( Micrococcus, Coriolis of Staphylococcus aureus, S.epidermidis and S.equorum) , bacilli ( Acinetobacter baumannii, A.lwoffii and Alcaligenes faeca-lis),and fungi (Mucor and Saccharomyces).Conclusion Although the content of microorganisms was up to the military hygiene standards , it was higher than in the same kind of tunnels .Themulti peakphenomenon of microbial distribution suggests that the change of air microorganisms in tunnels has its own characteristics .Most of the air microorganisms are con-ditioned pathogens that may cause illness if they are not under control .

Objective To investigate the incidence and risk factors of acute kidney injury (AKI). Methods The clinical data of 438 patients with severe pneumonia who were admitted in the intensive care unit in 2016 were retrospectively analyzed for analysis of AKI and assessment of risk factors. Results Among the 438 patients with severe pneumonia,the incidence of AKI was 53.42%. Within 72 hours after admission into the ICU, 86.75% of them developed AKI mainly from hypovolemic or septic shock(accounting for 80.34%). The detection rate of AKI by the standards of RIFLE and AKIN was lower than by the standards of KDIGO (45.89%,48.17%vs. 53.42%). Anemia ,shock /hypotension ,drugs ,RRT ,APPACHE II scores were the predictors of AKI. Conclusions The incidence of severe pneumonia complicated with AKI is high. Most of the patients develop it in 72 hours after admission into the ICU. Anemia,shock/hypotension,drugs,RRT,APPACHE II scores are its risk factors.

Objective To explore the clinical value of ω-3 fatty acids (ω-3PUFA)immune nutrition therapy for the patients with acute ischemic stroke,and analyze its mechanism.Methods 40 patients with acute ischemic stroke were selected.They were divided into the treatment group and the control group,each group in 20 cases. The patients of the control group were given indwelling tube admitted to hospital within 24 hours,given the homogenized meal configured by nutriology department.The treatment group received ω-3PUFA enteral nutrition based on the control group.The neurologic recovery,nutritional status,lipid levels and the incidence of complications were evalua-ted.Results The total effective rate of the treatment group was 90.0%,which was higher than that of the control group (60.0%,χ2 =4.8,P <0.05).The incidence rate of complication of the treatment group was 30.0%,which was lower than the control group (65.0%,χ2 =4.91,P <0.05).The indicators such as NIHSS score,GCS score, TSF and AMC in the treatment group were better than those in the control group[(13.38 ±1.21)points vs.(10.12 ± 1.33)points;(12.9 ±2.6)points vs.(14.1 ±1.7)points;(14.06 ±7.16)mm vs.(14.8 ±4.18)mm;(26.32 ± 1.42)mm vs.(29.40 ±1.08)mm,t =3.51,6.44,3.22,5.19;all P <0.05].TG and LDL -C in the treatment group were lower than those in the control group[(1.60 ±0.71)mmol/L vs.(1.41 ±0.67)mmol/L;(3.11 ±0.60)mmol/L vs.(2.67 ±0.66)mmol/L,t =5.97,4.22;all P <0.05 ].Conclusion The clinical curative effect is better for application of ω-3PUFA on immune nutrition treatment for the patients with acute ischemic stroke.The patients'nerve function,blood lipid levels and nutritional status were significantly improved,and the complications were reduced.