小分子糖负载血小板+冻干保护剂混合悬液的相变点测定与屏蔽实验研究

目的测定冻干血小板长期保存预冻程序和所依据的制品相变点温度并摸索相应屏蔽相变点的最佳冷冻曲线。方法研制出小分子糖负载血小板+冻干保护剂混合悬液,使用速率程序降温仪分析测定该混合悬液样品的相变点温度;根据测得的相变点温度,设计屏蔽相变点的预冻程序,根据温度变化曲线,判断相变点屏蔽结果。结论该混合悬液样品的相变点温度为(-13.56±2.05)℃;据此相变点温度所设计的3种相应的屏蔽相变点的预冻程序中,程序3为最佳冷冻曲线。结果获得了小分子糖负载血小板+冻干保护剂混合悬液的相变点温度及相应的屏蔽相变点的最佳预冻程序。

人胎儿肝脏、脾、胸腺细胞混合悬液治疗失代偿期肝硬化临床研究

应用人胎儿肝脏、脾、胸腺细胞混合悬液治疗失代偿期肝硬化47例,经临床观察对改善症状,增加食欲,消除腹术,改善肝功,提高血浆白旦白、血色素含量及血小板起到较好的作用,使用安全,疗效可靠。

石油烃混合降解菌对汽油污染土的降解条件优化试验研究

为测定实验室提取的5种石油烃降解菌的混合菌悬液对汽油污染土的降解效果,利用气相色谱质谱联用仪对经过降解菌降解的汽油污染土化合物进行定性分析,以鉴定此混合菌悬液对汽油污染土是否有降解能力;考虑pH值、温度、土壤含水率及降解菌接种量等因素,采用单因素试验和多因素正交试验进行降解率测定,以优化此混合菌悬液对汽油污染土的降解条件。试验结果表明,单因素试验条件下,经过试验前后化合物组分比较发现,实验室提取的5种混合降解菌对汽油污染土有良好的降解能力;由相对峰面积比图发现,温度和降解菌接种量相对于含水率和pH值这两个因素来说,对混合降解菌降解效果的影响更为显著;当pH值在6~8、降解温度在30~35℃、含水率在15%~25%、降解菌接种量在1~2.5mL范围时,混合菌悬液的降解效果相对明显。多因素正交试验条件下,混合菌悬液的最佳降解条件是:温度为32℃,pH值为7,降解菌接种量为1mL,含水率为25%。

混合细菌悬液法与化学烧伤法的对比研究

分别采用机械损伤联合混合细菌悬液法与机械损伤联合化学烧伤法,制造大鼠盆腔炎模型,并进行对比。 方法 将50只SD雌性大鼠随机分为空白组、混合细菌悬液组高、低剂量组和化学烧伤高、低剂量组,每组10只,正常组予常规水食饲养,混合细菌悬液组(细菌组)是在机械损伤大鼠子宫内膜组织后,将配备好的混合细菌悬液(大肠杆菌、金黄色葡萄球菌、乙型溶血性链球菌按2:1:1配置)从大鼠子宫分叉处进针,朝右侧卵巢方向注射相应剂量的细菌溶液,以制备大鼠盆腔炎模型;化学烧伤组(苯酚组)是用同样方法朝大鼠右侧卵巢方向注射相应剂量的苯酚凝胶,以制备大鼠盆腔炎模型。10天后,观察大鼠子宫组织形态,并进行病理组织学检查。结果 苯酚组大鼠局部子宫肿胀度高于细菌组,且有明显周围组织粘连,增粗以及积水表现。结论 机械损伤联合化学烧伤法制备的大鼠盆腔炎模型,成模率高、死亡率低,且模型效果优于机械损伤联合混合细菌悬液法。

防治番茄青枯病复配剂筛选

采用“农药 -菌悬液混合”杀菌法 ,测定了农用链霉素等 4种单剂对番茄青枯病菌(Burkhokderiasolanacearum )的室内毒力测定 ,求出各单剂的EC50 ,并根据“按比例混合法”〔4〕复配 ,结果表明 :复配剂Ⅰ、Ⅱ、Ⅲ都有增效作用 ,其中以复配剂Ⅰ的增效作用最明显 ,最高杀菌率达97.4 % (农用链霉素与水合霉素以 1∶4混配所得制剂 ) ;其次是复配剂Ⅱ ,最高杀菌率为 91.5 % (农用链霉素与立枯净以 4∶1混配所得制剂 ) ;复配剂Ⅲ的增效作用最低 ,最高杀菌率为 79.3%。

Design and evaluation of glasphalt mixtures by using recycled waste cullet

A glass crusher was developed to improve the waste glass crushing process.The waste glass was recycled,crushed and sieved to different particle sizes as glass aggregates,and the surface of glass aggregates was treated by nano-Fe2O3 suspension to improve the anti-striping property.The glasphalt mixture made by partly replacing mineral aggregates with glass aggregates was designed and evaluated.The sizes of glass aggregates were selected to be 2.36 and 4.75 mm,and the optimum concentration of nano-Fe2O3 suspension was determined to be 10%.The optimum asphalt content(OAC)was determined by the Marshall method and the glass aggregate content.The influence of the glass aggregate content on the technical properties of glasphalt mixtures were analyzed by the rutting test,three-point bending test,freeze-thaw splitting test and skid resistance test.The results show that the optimal content of glass aggregates and OAC are recommended to be 15%and 4.4%,respectively.These environmentally-friendly glasphalt mixtures can solve the problem of environmental pollution caused by waste glass,as well as reducing the cost of pavement materials and construction.

CL-20基炸药油墨的直写成型及性能研究

以六硝基六氮杂异伍兹烷(CL-20)作为主体炸药,乙基纤维素(EC)及聚叠氮类粘结剂为粘结剂,乙酸乙酯为溶剂,配制出一种全溶性炸药油墨。采用微控直写工艺将该炸药油墨在基板上进行了书写,并对成型后所得复合物的性能进行了测试和表征。结果表明:成型样品中CL-20颗粒形貌为球形,颗粒尺寸小于1μm,均匀分布在粘结体系基体中;成型样品的密度为1.66 g/cm^3,达到理论密度的85.5%;和原料CL-20相比,复合物的撞击感度得到明显降低,特性落高比原料CL-20高出21.5cm。该配方具有良好的传爆性能,1.2mm装药宽度下,爆轰临界尺寸为0.357mm。

Nanoplasmonic colloidal suspensions for the enhance-ment of the luminescent emission from single-walled carbon nanotubes

Aiming to enhance the luminescence yield of carbon nanotubes, we introduce a new class of hybrid nanoplasmonic colloidal systems （π-hybrids）. Nanotubes dispersed in gold nanorod colloidal suspensions yield hybrid structures exhibiting enhanced luminescence up to a factor of 20. The novelty of the proposed enhancement mechanism relies on including metal proximity effects in addition to its localized surface plasmons. This simple, robust and flexible technique enhances the luminescence of nanotubes with chiralities whose enhancement has never reported before, for example the （8,4） tube.