共查询到19条相似文献,搜索用时 125 毫秒
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设计一种新型简易过床担架,通过该简易过床担架搬移病人更方便有效、省力、省时,减轻医护人员的劳动强度,增加病人稳定性和舒适度。 相似文献
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周叶瑛 《科技情报开发与经济》2012,22(20):151-152
介绍了我国城市高层住宅中电梯的现状,基于国家对于住宅电梯的法律法规,阐述了住宅楼内设置可容纳担架电梯的重要性,根据国内外可容纳担架电梯的配置情况,讨论了可容纳担架电梯设置存在的问题并提出了解决方案。 相似文献
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观察冠脉狭窄患者中心动脉波的变化,并探讨外周与中心动脉间的传递函数与冠脉狭窄的相关性.采集了9名冠脉狭窄患者支架手术前后的中心动脉与桡动脉脉搏波,分别建立手术前后的自回归传递函数数学模型,并将手术后的桡动脉波形分别用手术前后的传递函数模型重建中心动脉波形.提取两中心动脉波形的特征点并计算重建出的两中心动脉压的特征参数K,t,接着分别与术后实测中心动脉压的参数进行显著性差异分析.实验结果表明,冠状动脉狭窄对传递函数存在着一定的影响,在临床上的意义为对于急性心梗患者在急性患病时间内不能用通用传递函数重建中心动脉. 相似文献
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后入路副神经移位修复肩胛上神经术式的临床应用研究 总被引:2,自引:0,他引:2
介绍后入路副神经移位修复肩胛上神经、治疗臂丛神经损伤、恢复肩关节外展功能的新术式,并探讨其临床疗效。将后入路副神经移位修复肩胛上神经术式成功地应用于11例病人,并随访术后疗效;结果表明:后入路副神经移位修复肩胛上神经术式操作简单、安全可行,术后疗效确切,恢复早于传统术式,并且术后斜方肌上部肌力及其耸肩功能无影响,使恢复的肩关节外展接近于正常动作。 相似文献
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Direct enzyme transfer from lymphocytes is specific 总被引:2,自引:0,他引:2
Lymphocytes are known to interact directly with other cells in vivo and in vitro, and have recently been shown to transfer the lysosomal enzyme, beta-glucuronidase, to fibroblasts from patients with an inherited deficiency of the enzyme. This process requires cell-cell contact, is unaffected by inhibitors of 'classical' receptor-mediated endocytosis and is abolished by inhibitors of protein synthesis. Although it is not yet known to what extent the transfer of enzymes by direct cellular interaction is a general phenomenon, a similar mechanism could possibly be involved in the transfer of other lysosomal enzymes in vivo and in the exchange of protein in vitro. We show here that the direct transfer of enzymes from lymphocytes to fibroblasts is restricted to only certain lysosomal enzymes. 相似文献
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Retrovirus-mediated transfer and expression of drug resistance genes in human haematopoietic progenitor cells 总被引:31,自引:0,他引:31
Patients with certain genetic disorders can be cured by bone marrow transplantation. However, as prospective donors do not exist for most patients with potentially curable genetic abnormalities, an alternative treatment for such patients involves the transfer of cloned genes into the patient's haematopoietic stem cells followed by re-infusion of the treated cells. Retroviral vectors provide an efficient means for transferring genes into mammalian cells and have been used to transfer genes into mouse haematopoietic cells. We have now produced amphotropic retroviral vectors containing either the bacterial gene for neomycin resistance or a mutant dihydrofolate reductase gene that confers resistance to methotrexate and have used these vectors to infect and confer drug resistance to human haematopoietic progenitor cells in vitro. Transfer could be demonstrated in the absence of helper virus by using an amphotropic retrovirus packaging cell line, PA12 (ref. 9). These studies are an important step towards the eventual application of retrovirus-mediated gene transfer to human gene therapy and for molecular approaches to the study of human haematopoiesis. 相似文献
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本文以研究维吾尔医沙疗对骨质层的转移及力学性能的影响为目的,建立好股性关节炎模型的30只新西兰大白兔作为研究对象,由沙疗时间长短之差异将所有兔子分为三组并进行沙疗。在此期间进行四次CT扫描,计算出各股骨骨质层的总体积且统计分析骨质层的转移。取三组兔子左右股骨进行三点弯曲实验。实验结果表明,病态兔子股骨硬质骨和密质骨的增加速度比正常股骨低,而软质骨的减少速度基本一致;软质骨在向硬质骨和密质骨转化;正常兔子股骨的挠度、最大抗弯强度和最大抗弯正应力比病态兔子股骨要高,沙疗会促进股骨骨质层的转化,且改善股骨基本力学性能。 相似文献
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人类基因治疗是遗传工程在人类疾病治疗方面的应用,该方法是应用遗传工程的方法,将正常基因导入患者的体细胞内,使其在细胞内得到一定的表达,产生正常的基因产物以补尝或修正突变基因的功能,从而使人类的遗传病得到根治,本文对人类基因治疗研究中受体细胞的研究、基因转移方式等方面的最新研究进展作一综述,并对其存在的问题及应用前景进行了初步展望. 相似文献
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Until now, animal cloning and the production of embryonic stem cell lines by somatic cell nuclear transfer have relied on introducing nuclei into meiotic oocytes. In contrast, attempts at somatic cell nuclear transfer into fertilized interphase zygotes have failed. As a result, it has generally been assumed that unfertilized human oocytes will be required for the generation of tailored human embryonic stem cell lines from patients by somatic cell nuclear transfer. Here we report, however, that, unlike interphase zygotes, mouse zygotes temporarily arrested in mitosis can support somatic cell reprogramming, the production of embryonic stem cell lines and the full-term development of cloned animals. Thus, human zygotes and perhaps human embryonic blastomeres may be useful supplements to human oocytes for the creation of patient-derived human embryonic stem cells. 相似文献
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无论从全局还是局部的角度出发,采用多尺度转移熵表示全局和局部两类脑电(electroencephalography,EEG)信号,并分析其动态和不对称信息。采用比例系数从1到199、步长为2的多尺度方法处理正常人和癫痫病患者的脑电信号;然后采用维度为3的全局排列方法表示序列。将正向和反向符号序列作为转移熵的输入。比例因子的间隔和全局路径分别为(37,57)和(65,85),分析发现两组EEG信号的熵值在该处较容易区分。当比例系数为67时,健康对照组和癫痫病患者的转移熵值分别为0.113 7和0.102 8,差异最大。在比例系数是165时,全局变量的相应值为0.064 1和0.060 1。研究结果表明,合适的排列有助于更好的区分脑电数据信息,采用多尺度符号转移熵分析EEG信号更加有效。 相似文献
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石宏 《北华大学学报(自然科学版)》2001,2(3):232-233
用乙肝特异性转移因子(HVB-TF)治疗急性乙型肝炎50例,对照组50例用安慰剂,采用双育随机试验,治疗后,治疗组HBsAg和HBeAg转阴率分别为49/50和48/50,而对照仅为34/50和16/50,2组比较有显著差异(P<0.05)。 相似文献