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131.
目的 :了解中枢神经系统 (CNS)感染性疾病患儿脑脊液中细胞因子水平对化脓性脑膜炎与病毒性脑炎的鉴别诊断价值。方法 :采用双抗体夹心ELISA法检测化脓性脑膜炎、病毒性脑炎和非CNS感染性疾病患儿脑脊液中的G CSF、TNF α、IL 8和sIL 2R水平 ,观察它们与粒细胞、蛋白含量和糖定量间的相关性并对它们在不同疾病组脑脊液中的水平进行比较。结果 :中枢神经系统 (CNS)感染性疾病患儿脑脊液中的G CSF、IL 8、sIL 2R与粒细胞计数呈正相关 (P均 <0 .0 5 ) ;化脓性脑膜炎组脑脊液中G CSF、IL 8明显高于病毒性脑炎组 (P均 <0 .0 1) ,而TNF α、sIL 2R与病毒性脑炎组的差异无显著性 (P均 >0 .0 5 )。病毒性脑炎组脑脊液中的TNF α、sIL 2R均高于对照组 (P均 <0 .0 1) ,而G CSF、IL 8与对照组的差异无显著性 (P均 >0 .0 5 )。结论 :脑脊液中G CSF、IL 8水平对化脓性脑膜炎与病毒性脑炎的鉴别诊断有一定的价值  相似文献   
132.
利用高分辨率的IKONOS卫星数据,以RS和GIS为技术手段研究了川中丘陵区的景观格局特征及其影响因素。结果表明,随着地势起伏的加剧和人类活动强度减弱,浅丘、中丘和高丘景观格局的多样性指数分别是1.1437、1.3598和1.4367;优势度依次为0.8022、0.5861和0.5092;分维数依次是1.2652、1.3019和1.3272;破碎度则分别为53.9488、60.1556和54.4666。其景观格局主要受气候、地貌、坡度、人类活动和居民点分布的控制和影响。  相似文献   
133.
分析比较了钢质外浮顶油罐的回转接头式、枢轴式和挠性管式3种常用中央排水装置的结构与性能.介绍了钢质外浮顶罐ZYPS新型中央排水装置的结构与特点.实际应用效果证明,ZYPS新型中央排水装置能够快捷、彻底地排出罐顶的积水,并且具有结构简单、可靠性强、抗疲劳性能高、成本较低、适应性强等优点.  相似文献   
134.
The caudla vena cava (CVA) was evaluated as an laternative site for the measurement of central venous pressure (CPV) in six healthy, sedated (ketamine 10 mg/km, midazolam 0.1 mg/kg, and atropine 0.04 mg/kg IM) cats. The CVC was cathererized via medial saphenous puncture, and estimates of CPV from this site compared to those obtained via a jugular catheter. Simulataneous CPV values were recorded electronically (mmgh), via calibrated pressure transducer positioned at the level of the manubrium in cats in lateral recumbency. Five readings, performed at 1 minute intervals, were collected from the jugular and CVC catheters at rest (baseline) and following a rapid fluid bolus. Twenty-four hours later, cats were resedated, baseline measurements repeated, and CVPs recorded following a rapid, 25% whole-blood volume bleed. CVP measurements from the jugular and CVC were statistically compared using repeated measures ANOVA (p<0.05). There were no significant differences between the two sites in the baseline and bleed trials. Significant defferences between jugular and CVC CVPs were noted at 1 and 2 minutes following the fluid bolus. It was concluded that CVC is an alternative site for measurement of CPV in sedated cats.  相似文献   
135.
碳纤维增强混凝土受弯构件正截面承载力设计   总被引:1,自引:1,他引:0  
提出碳纤维筋的抗弯设计强度的确定方法 ,阐述了碳纤维筋增强混凝土受弯构件的设计方法和设计所需的注意事项  相似文献   
136.
During a nematode survey, severe infections of tobacco feeder roots and heavy soil infestations byMeloidogyne incognita race 1 were found in S. Miguel (Azores islands, Portugal). This is the first record ofM. incognita infection of tobacco in Azores. Morphology of various life stages, analysis of the esterase electrophoretic pattern and differential host tests were used for nematode characterization and identification. Nematode-induced mature galls were spherical and/or ellipsoidal and usually contained more than one female, males and egg masses with eggs. Feeding sites were characterized by the development of giant cells that contained granular cytoplasm and many hypertrophied nuclei. Giant cell cytoplasm was aggregated along a thickened cell wall. Vascular tissues within galls appeared disorganized. The relationship between the initial nematode population density and growth of tobacco plants was tested in a glasshouse experiment in which inoculum levels varied from 0 to 512 eggs and juveniles (J2) cm−3 of soil. Seinhorst’s model was fitted to height and top fresh weight data of the inoculated and control plants. Tolerance limits with respect to plant height and fresh top weight of tobacco cv. ‘Erzegovina’ plants toM. incognita race 1 were estimated as 1.25 eggs and J2 cm−3 of soil. The maximum nematode reproduction rate was 404.7 at an initial population density of 4 eggs and J2 cm−3 of soil. http://www.phytoparasitica.org posting March 2, 2004.  相似文献   
137.
The scabicide, lindane induces oxidative stress and immunological alterations. The present study was undertaken to assess the ameliorative effects of antioxidant supplementation in lindane treated scabies patients. Scabies patients were treated with either 1% lindane or 1% lindane along with antioxidant (Lycored or Vitamin-E). Oxidative stress and immunological parameters were evaluated in blood samples and compared with healthy controls. Lindane caused a significant increase in malonedialdehyde (MDA) levels and decrease in reduced glutathione (GSH) and ferric reducing ability of plasma (FRAP), which was attenuated by anti-oxidant therapy. The IL-1α levels were significantly enhanced in scabies patients per se and remained unaffected after lindane/anti-oxidant treatment. The TNF-α and nitroblue tetrazolium (NBT) reduction levels were not significantly different in all the groups. Topical application of lindane induces significant free radical generation and may cause immunological alterations which can be reversed by antioxidant therapy.  相似文献   
138.
孙驰 《北京农业》2012,(18):147-148
分析农户土地利用受限补偿在理论和技术两个方面存在的问题。并对该项研究提出理清补偿相关概念,构建补偿标准的测算和评价体系,加强补偿监督和评价体系等建议。  相似文献   
139.
中央级农业科研院所基本科研业务费专项管理探析   总被引:3,自引:0,他引:3  
该文回顾了基本科研业务费专项的设立背景,对专项特点以及中央级农业科研院所的专项管理实践情况和成效进行了归纳总结,并在借鉴科研项目现行主要管理模式的基础上,提出常设学位委员会指导下的PDCA关键点控制过程管理模式,是符合中央级农业科研院所的专项项目管理模式选择,对进一步加强基本科研业务费管理、充分发挥基本科研业务费专项作用,具有重要的参考价值。  相似文献   
140.
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