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1.
1989~1997年间,24例HIV感染者中有16例确诊为AIDS,其中9例死亡,对资料完整的7例分析,从发现血清阳转到死亡时间最短2d,最长为6年,故应重视早期发现HIV感染者。近3年来对16例AIDS病人经过各地免费提供的10种中药观察治疗,初步...  相似文献   

2.
为了解献血员人群HIV感染情况,我们对1995~1997年献血员HIV抗体检测情况进行了分析。方法:献血员HIV抗体的初筛试验采用抗-HIV抗体ELISA法,HIV抗体初筛试验阳性者用蛋白印迹法(WB)进行确认。结果:3年内共检测140028人次,初筛HIV抗体阳性18例献血员,并全部经WB法确认为HIV抗体阳性。其中15例为男性,3例女性,均为来自外省的流动人口。18例HIV抗体阳性献血员中,HCV抗体阳性检出率为833%(15/18),HBsAg阳性检出率为611%(11/18),HBsAg和HCV抗体阳性检出率为333%(6/8)。结论:在献血员人群中HIV抗体阳性检出率呈上升趋势,为此献血员HIV抗体筛查对预防和控制输血传播HIV具有重要意义。HIV与HBV和HCV具有较高的重叠感染率  相似文献   

3.
国产抗HIV-1试剂盒对献血员血清检测陈长荣,戴永强(厦门市中心血站)(厦门新创科技有限公司)艾滋病+(AIDS)是一种正在全世界广泛传播的疾病,其病毒(HIV)是一种单链RNA逆转录病毒.HIV感染后2个月左右在血清中可检测出抗HIV阳性,从感染到...  相似文献   

4.
HHV-6在体外可以激活HIVLTR引导的基因表达[1],其基因组中一基因片段B701已被证明与这种激活作用有关[2].B701编码143个氨基酸的蛋白质,可与HHV-6基因组中其它基因片段协同作用提高对HIVLTR的激活效力.对B701进行缺失突变,得到突变体RSV-B701-d1(3′端缺失181个bp)、RSV-B701-d6(3′端缺失353个bp),将这两个缺失突变体分别与HIV-Luc共转染受体细胞,通过LUC活性分析发现,缺失突变体d1、d6不但仍具有激活能力,而且d6的激活能力要远远大于d1.二级结构预测初步揭示了B701对HIV-LTR的反式激活作用机制,为阐明HHV-6基因产物与AIDS的病理关系提供了依据.  相似文献   

5.
我们建立并报道了第一个HIV - 1转基因大鼠模型。HIV感染已影响到全身各系统。描述了在这个模型中所有系统的病变。这些病变与在AIDS病人身上所见病变相似 ,甚至完全一样。主要包括 :HIV肾病、心血管疾病、血管畸形、皮肤病、CNS和外周神经疾病 ,以及骨髓发育异常。引起的病理变化与机体对不同基因(gp 12 0 ,tatandnef)的应答有关。这个模型所有组织中炎性细胞分裂增加 ,并伴有广泛的细胞调亡。根据疾病的不同发展阶段我们将从纵向和横向两个方面对疾病发展进程进行研究。我们相信这个模型将是研究AIDS病理…  相似文献   

6.
HIV-1和HBV复合型DNA免疫的初步研究   总被引:1,自引:0,他引:1  
近年的研究表明,在啮齿类和非人灵长类免疫带有编码病毒和细菌抗原基因的质粒DNA可以激发体液和细胞免疫应答.在本实验中,将HBV的S基因和HIV-1的gp160基因以融合形式插入到载体pcDNA3中,其能表达HBsAg和gp160的融合蛋白,并将此质粒DNA分别直接注射到Balb/c小鼠和Swis小鼠.三次免疫后,用ELISA的方法初步检测HBsAg和gp160抗原特异的抗体免疫应答均为阳性.结果说明,带有HBV和HIV-1融合基因的质粒DNA直接免疫小鼠后,均激发了小鼠产生相应的免疫应答反应,这个结果为研究和生产多价疫苗提供了新的思路  相似文献   

7.
探讨电视胸腔镜手术(VATS)在老年人胸部疾病治疗中的价值。方法:1996年6月至1998年2月,对32例年龄为60~82(平均683)岁的老年人施行VATS,其中局限性肺切除10例,肺叶切除5例,肺大泡切除3例,肺癌分期5例,胸膜活检、切除及固定术6例,血胸清肺修补、纵隔肿瘤切除及食管裂孔疝补术各1例。占同期VATS手术的377%。结果:全组无死亡。术后并发症发生率为219%。结论:由训练有素并充分了解老年人临床特点的胸外科医生施行VATS是安全可行的  相似文献   

8.
应用自制的ECL-1型电致化学发光仪,对新试剂6-(2-羟基-4-二乙基氨苯偶氮)-2.3-二氢-1,4-酞嗪二酮(HDEA)在Na2CO3-NaHCO3缓冲介质中的电化学发光行为作了研究.结果发现,当介质pH值为 10.54时,在一定的实验条件下,施加 1.7V (VS.SCE)三角波脉冲电压,体系的发光强度与HDEA浓度在5.0 × 10-9~1.0×10-6mol/L范围内呈线性关系,反应的检测限达1.0×10-9mol/L.  相似文献   

9.
探讨丙型肝炎( 简称丙肝) 病毒与HBV、CMV 混合感染对临床某些疾病的诊断价值.对221 例临床选择病例的HCV M、HBV M 和CMV M 联合检测,发现三种病毒共同感染者5例,检出率为2 .3 % (5/221) ;5 例均为血液透析病人.HBV 与HCV 两种病毒共同感染者47 例(47/221 ,21 .3 % ) ,血液透析组为51 .2 % (22/43) ;其后依次为慢性丙型肝炎组29 .6 % (8/27) ;肝细胞癌组21 .9 % (7/32) ;白血病组21 .4 % (3/14) 和急性输血后丙型肝炎组11 .1 % (5/45) ;其他肿瘤组、普通住院患者组分别为3 .7 % (1/27) 和3 .0 % (1/33) .HCV 与CMV 共同感染者中,慢性丙型肝炎组达33 .3 % (9/33) ;肝细胞癌组为28 .1 % (9/32) ;其后依次为血液透析组27 .9 %(12/43) 和急性输血后丙型肝炎组24 .4 % (11/45) .白血病组没有没有发现2 种病毒混合感染者.提示血液透析是传播肝炎病毒的一条重要途径;HCV 与CMV 的混合感染,仅多见于与HCV 感染密切相关的病组  相似文献   

10.
用27AlNMR方法研究了碱化度(B),Al3+/SO摩尔比及水中稀释过程对PACS(含SO的聚合氯化铝)结构的影响.实验结果表明,PACS中铝含量大子0.9mol/L时,水中稀释对PACS聚合度影响较大,小于0.9mol/L后水中稀释对PACS聚合度影响较小.水中稀释可使聚合大分子向Al13结构转化,这种转化能力的大小取决于PACS中B的高低和Al3+/SO摩尔比的大小.B的提高或SO含量的增加(Al3+/SO摩尔比减小),都使这种转化能力有所增加.  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

19.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

20.
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