The pretreatment of bacteria source is one of the key factors affecting the efficiency of bio-hydrogen production.Prior to inoculation,cow dung compost as the natural microbial consortium is treated by following metho...The pretreatment of bacteria source is one of the key factors affecting the efficiency of bio-hydrogen production.Prior to inoculation,cow dung compost as the natural microbial consortium is treated by following methods:(1)forced aeration combined adding sugar after infrared drying;(2)infrared drying;(3)infrared drying combined forced aeration;and (4)water immersion.The effects of the microbial community on bio-hydrogen production were investigated in a 20 L continuous stirred tank reactor (CSTR).The results showed that the maximum hydrogen production ability,hydrogen content and the rate of hydrogen production was 387.6 ml H2·(g-sucrose)-1,55.5% and 0.5089 L H2·(L·h)-1 at fixed sucrose concentration of 10 g·L-1,operating pH of 5.0±0.1 and the pretreated bacteria source by method (1),respectively.The contents of acetic acid and butyric acid were more than 75% of VFAs in the terminal liquid phase by-product.Furthermore,the image analysis by PCR-DGGE technology showed that there was district difference in the number of electrophoresis band and the strength.The sample,of which the bacteria source was treated by method (1),exhibited two maximum illumination bands,which implies that there exist two kinds of dominant microbial community.展开更多
目的探讨院前急救系统在针对急性缺血性卒中患者溶栓时间中发挥的效用,并分析救护车来院的影响因素。方法回顾性分析急诊收治的卒中溶栓患者,依据患者来院方式分为120来院组(86例)和自行来院组(138例)。比较2组基本情况(性别、年龄、婚...目的探讨院前急救系统在针对急性缺血性卒中患者溶栓时间中发挥的效用,并分析救护车来院的影响因素。方法回顾性分析急诊收治的卒中溶栓患者,依据患者来院方式分为120来院组(86例)和自行来院组(138例)。比较2组基本情况(性别、年龄、婚姻状态、医保支付情况)和既往存在卒中的危险因素情况(高血压、糖尿病、冠心病、血脂异常、心脏瓣膜疾病、心房颤动、卒中病史)、发病时症状(肢体乏力/无力、口齿不清、视觉障碍、凝视、头晕头痛、意识障碍)、到院时血压、心率、血糖、美国国立卫生研究院卒中量表(National Institute of Health Stroke Scale,NHISS)评分、主要结果[患者发病到接受溶栓治疗的时间(onset to needle time,ONT)];次要结果[从发病到急诊门口时间(onset to door time,ODT)、从发病到接受CT检查时间(onset to CT time,OCT)、从急诊大门到接受CT检查时间(door to CT time,DCT)、从急诊大门到接受溶栓治疗时间(door to needle time,DNT)],分析采用救护车到院的影响因素。结果2组心房颤动病史、肢体乏力/无力、口齿不清、视觉障碍、凝视、意识障碍、同时出现多个症状(≥4个症状)、ODT、OCT、ONT、溶栓前NHISS评分差异有统计学意义(P<0.05);2组性别、年龄、户籍、婚姻状态、是否使用医保、高血压、糖尿病、高血脂症、冠心病、心脏瓣膜疾病、卒中病史、吸烟史、喝酒史、头晕头痛症状、收缩压、舒张压、心率、血糖、DCT、DNT差异无统计学意义(P>0.05)。多因素Logistic回归分析结果显示,心房颤动(95%CI:0.127~0.834,P<0.05)、肢体乏力/无力(95%CI:0.018~0.399,P<0.05)、口齿不清(95%CI:0.117~0.924,P<0.05)是缺血性卒中患者选择救护车来院的保护因素。结论选择救护车到院卒中患者,可以明显缩短ONT,对于有卒中风险的患者,要加强日常慢性病管理和健康教育,并进一步理清思路、针对现有的卒中救治网络流程做优化。展开更多
文摘The pretreatment of bacteria source is one of the key factors affecting the efficiency of bio-hydrogen production.Prior to inoculation,cow dung compost as the natural microbial consortium is treated by following methods:(1)forced aeration combined adding sugar after infrared drying;(2)infrared drying;(3)infrared drying combined forced aeration;and (4)water immersion.The effects of the microbial community on bio-hydrogen production were investigated in a 20 L continuous stirred tank reactor (CSTR).The results showed that the maximum hydrogen production ability,hydrogen content and the rate of hydrogen production was 387.6 ml H2·(g-sucrose)-1,55.5% and 0.5089 L H2·(L·h)-1 at fixed sucrose concentration of 10 g·L-1,operating pH of 5.0±0.1 and the pretreated bacteria source by method (1),respectively.The contents of acetic acid and butyric acid were more than 75% of VFAs in the terminal liquid phase by-product.Furthermore,the image analysis by PCR-DGGE technology showed that there was district difference in the number of electrophoresis band and the strength.The sample,of which the bacteria source was treated by method (1),exhibited two maximum illumination bands,which implies that there exist two kinds of dominant microbial community.
文摘目的探讨院前急救系统在针对急性缺血性卒中患者溶栓时间中发挥的效用,并分析救护车来院的影响因素。方法回顾性分析急诊收治的卒中溶栓患者,依据患者来院方式分为120来院组(86例)和自行来院组(138例)。比较2组基本情况(性别、年龄、婚姻状态、医保支付情况)和既往存在卒中的危险因素情况(高血压、糖尿病、冠心病、血脂异常、心脏瓣膜疾病、心房颤动、卒中病史)、发病时症状(肢体乏力/无力、口齿不清、视觉障碍、凝视、头晕头痛、意识障碍)、到院时血压、心率、血糖、美国国立卫生研究院卒中量表(National Institute of Health Stroke Scale,NHISS)评分、主要结果[患者发病到接受溶栓治疗的时间(onset to needle time,ONT)];次要结果[从发病到急诊门口时间(onset to door time,ODT)、从发病到接受CT检查时间(onset to CT time,OCT)、从急诊大门到接受CT检查时间(door to CT time,DCT)、从急诊大门到接受溶栓治疗时间(door to needle time,DNT)],分析采用救护车到院的影响因素。结果2组心房颤动病史、肢体乏力/无力、口齿不清、视觉障碍、凝视、意识障碍、同时出现多个症状(≥4个症状)、ODT、OCT、ONT、溶栓前NHISS评分差异有统计学意义(P<0.05);2组性别、年龄、户籍、婚姻状态、是否使用医保、高血压、糖尿病、高血脂症、冠心病、心脏瓣膜疾病、卒中病史、吸烟史、喝酒史、头晕头痛症状、收缩压、舒张压、心率、血糖、DCT、DNT差异无统计学意义(P>0.05)。多因素Logistic回归分析结果显示,心房颤动(95%CI:0.127~0.834,P<0.05)、肢体乏力/无力(95%CI:0.018~0.399,P<0.05)、口齿不清(95%CI:0.117~0.924,P<0.05)是缺血性卒中患者选择救护车来院的保护因素。结论选择救护车到院卒中患者,可以明显缩短ONT,对于有卒中风险的患者,要加强日常慢性病管理和健康教育,并进一步理清思路、针对现有的卒中救治网络流程做优化。
