Effects of diapause and host species on some morphometric characters inTrichogramma (Hym.: Trichogrammatidae)

Adult morphology ofTrichogramma is modified by environmental conditions during the preimaginal development. For instance, the low temperatures inducing diapause cause a decrease of the ratio length of longest seta on male flagellum/width of flagellum inT. evanescens. The species of the host also influences numerous body ratios. So, in females, the development of tibiae with regard to wings is more important withScotia ipsilon than withGalleria mellonella. These results confirm the necessity of performing comparative morphological studies on individuals reared in the same conditions.     

hTERT基因电转染人γδT细胞建立可诱导的永生化细胞系

利用电击将外源基因hTERT与pTet-on调控质粒共转染人γδT细胞,建立可诱导的永生化人γδT细胞系.分离人PBMC,体外刺激增殖后经磁珠分选纯化,然后对其进行外源hTERT基因和pTet-on调控质粒的共同电转染,并加入强力霉素诱导目的基因表达.电转染程序T 23和T-20的效率分别为37.5％±0.9860％和30.5％±0.5590％.经鉴定,外源hTERT基因能够整合人γδT细胞基因组中并在诱导后表达.程序T-23的转染效率更高,强力霉素的有效诱导浓度是600ng/mL,志愿者本人的血清更利于电转后细胞的存活.     

某电厂主蒸汽管道SA335P91制造质量分析

本文通过对电厂SA335P91主蒸汽管道的现场检验和试验室取样综合分析,指出该批管道由于制造加工或热处理过程控制不当,导致管道内、外壁表面及近表面出现块状铁素体,金相组织异常,表面硬度值偏低.     

弱核条件下的T（b）定理的小波证明

研究弱核条件下的T(b)定理，并且在b=1+ia′(x)，-M<a′<M，M>0以及b是仿增长函数情况下，利用小波证明了T(b)定理.     

Polyisoprenyl glycolipids as targets of CD1-mediated T cell responses

T cells are well known to recognize peptide antigens presented by major histocompatibility (MHC) class I or class II molecules. More recently, the CD1 family of antigen-presenting molecules has been shown to present both mammalian and microbial glycolipid antigens for specific recognition by T cells. Human CD1c proteins mediate T cell recognition of polyisoprenyl glycolipids, evolutionarily conserved phosphoglycolipids, which function in glycan synthesis pathways. This family of antigenic molecules is particularly attractive for the study of the molecular features that control T cell recognition of self and foreign glycolipids because natural polyisoprenols from mammals, fungi, protozoa, mycobacteria and eubacteria differ in structure. Moreover, these naturally occurring structural differences can influence their recognition by CD1c-restricted T cells. This review of the structural diversity and evolutionary relationships of polyisoprenoid glycolipids emphasizes those features of polyisoprenyl glycolipid biosynthesis that are relevant to their functions as targets of CD1-mediated T cell responses. Received 16 March 2001; received after revision 19 April 2001; accepted 23 April 2001     

相对L-闭包算子与相对T0闭包空间

在L-闭包空间中, 定义了相对闭包算子与相对T₀闭包空间, 研究它们的一系列性质, 并证明了相对T₀分离性是遗传的、 可乘的、 具有L-好的推广等性质, 得到了T₀分离性与相对T₀分离性的关系.     

伽玛暴内秉持续时间的分布

利用卡方检验的方法对SWIFT仪器观测的438个暴样本(其中143个暴有红移)的T90分布进行统计检验,找寻是否存在第三个子类暴.研究表明,在观测系的T90分布没有发现有第三个子类暴,但暴源的T90却存在第三个子类暴.     

复方参芪苓对气虚小鼠T淋巴细胞酯酶染色率的影响

目的观察复方参芪苓煎剂对气虚模型小鼠及正常小鼠血液T淋巴细酯胞酯酶染色百分数的影响.方法给小鼠灌服复方参芪苓煎剂每d150 g/kg,连服10 d.实验采用ANAE染色法计数血液T淋巴细胞胞浆内紫红色颗粒.结果复方参芪苓煎剂可显著增加气虚小鼠T细胞的酯酶染色率(给药组:45.8%±3.62%;对照组:32.1%±8.14%),而对正常小鼠无明显影响.结论实验提示本药可通过增加T细胞功能而提高气虚症者的免疫功能.     

刘桥矿二矿段采煤塌陷区治理工程设计

根据刘桥矿二矿段采煤塌陷区塌陷现状,进行了农用地工程设计、农田水利工程设计和道路工程设计。采用散点法计算了土方量,经计算,挖方量余18659.3m3,满足土方回填需求。对农田水利工程进行了灌溉工程布置、灌溉渠道设计和排水工程设计,设计结果为灌水率为0.8560.856m3/s/万亩,渠道设计流量为0.091m/s。对道路工程进行了工程布置和工程设计,设计结果为宽4m的田间道1条,宽2m的生产路5条。设计结果为塌陷区治理提供了依据。     

Albumin resuscitation protects against traumatic/hemorrhagic shock-induced lung apoptosis in rats

Objective： To determine the effects of albumin administration on lung injury and apoptosis in traumatic/hemorrhagic shock （T/HS） rats. Methods： Studies were performed on an in vivo model of spontaneously breathing rats with induced T/HS; the rats were subjected to femur fracture, ischemia for 30 min, and reperfusion for 20 min with Ringer＇s lactate solution （RS） or 5% （w/v） albumin （ALB）, and the left lower lobes of the lungs were resected. Results： Albumin administered during reperfusion markedly attenuated injury of the lung and decreased the concentration of lactic acid and the number of in situ TdT-mediated dUTP nick-end labelling （TUNEL）-positive cells. Moreover, immunohistochemistry performed 24 h after reperfusion revealed increases in the level of nuclear factor κB （NF-κB）, and phosphorylated p38 mitogen-activated protein kinase （MAPK） in the albumin-untreated group was down-regulated by albumin treatment when compared with the sham rats. Conclusion： Resuscitation with albumin attenuates tissue injury and inhibits T/HS-induced apoptosis in the lung via the p38 MAPK signal transduction pathway that functions to stimulate the activation of NF-κB.