Si-rhodamine based water-soluble fluorescent probe for bioimaging of Cu+

A Si-substituted rhodamine based water-soluble fluorescent probe bearing a tetrathia-azacrown was designed for fluorescence imaging of Cu⁺ with substantial affinity and selectivity.In physiological condition,the developed probe with outstanding water-solubility exhibits ultrahigh sensitivity to Cu⁺,ensuring the reliable fluorescence imaging in vivo.     

泰勒宁在动脉栓塞治疗子宫肌瘤术后腹痛控制中的疗效观察

探讨泰勒宁胶囊在子宫动脉栓塞(UAE)治疗子宫肌瘤术后腹痛控制中的临床疗效。动脉栓塞治疗子宫肌瘤46例,患者随机分成两组(n=23)。腹痛开始给药,A组口服泰勒宁胶囊1粒/次tid;B组用消炎痛肛栓100mg/粒,1粒/次tid。A组患者镇痛质量分数明显优于B组(P0.01),A组存在胃肠道反应;B组出汗较多两组均无呼吸抑制、低血压和心动过缓。泰勒宁胶囊对子宫动脉栓塞(UAE)治疗子宫肌瘤术后腹痛的控1制疗效确切,副作用小,术后恢复快。     

一种黑曲霉斜面培养基的优化方法

通过一系列实验,优化了黑曲霉Co827的斜面培养基配比.优化后的斜面培养基为3.5°Be～ 3.6°Be麦芽汁培养基.采用优化后的培养基,单菌落孢子数达到167.2×105左右,产孢子能力提高了15.07％,通过摇瓶验证,产酸达到14.40％,提高了3％左右.     

Bipolar copolymers comprised mesogen‐jacketed polymer containing oxadiazole units and PVK as host materials for electroluminescent devices

Nonconjugated bipolar transport polymers have been developed as host materials for electroluminescent devices by incorporating both electron‐transporting and hole‐transporting functionalities into copolymers. The random copolymer PCt‐nvk3‐7 containing mesogen‐jacketed segment of P‐Ct have been synthesized and characterized. The effect of mesogen‐jacketed segment content of these bipolar copolymers on device performance has been investigated. The results of polymer light‐emitting diodes (PLEDs) show that the jacketed content of copolymers has a significant effect on device performance: lowering charge transport and facilitating the hole‐electron recombination leads to much higher current efficiency. Applying these high triplet random copolymers as host, the maximum current efficiency of 0.70 cd/A and the maximum brightness of 1872.8 cd/m² was achieved for PCt‐nvk3‐7 with an orange‐emitting complex dopant. The results suggest that the bipolar copolymers PCt‐nvks can be good host polymers for electrophosphorescent devices. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 7861–7867, 2008     

TBP萃取一元有机酸的研究

考察了不同稀释剂中ＴＢＰ对甲酸、乙酸、丙酸、丁酸、氯乙酸、二氯乙酸、三氯乙酸等一元有机酸的萃取．探讨了被萃取物结构与萃取性能的关系及稀释剂性质和温度对萃取的影响．用红外光谱对萃取机理进行了研究．正辛烷中不同有机酸的萃取顺序为，①三氯乙酸＞二氯乙酸＞氯乙酸＞乙酸，萃取平衡常数随有机酸的取代基诱导常数σ＊的增大而增大，两者间遵从Ｔａｆｔ线性关系，诱导效应是影响萃取的主要因素．②丁酸＞丙酸＞乙酸＞甲酸，随诱导效应减弱和空间效应增大，萃取能力增强，表明空腔效应起主要作用．     

邢台煤矿水文地质模型研究

通过对水文地质条件的分析和处理,建立了邢台煤矿石炭系太原组大青灰岩含水层的水文地质物理模型.在此基础上,建立了大有含水层地下求渗流运动的数值模型.用内点法对模型进行了识别和求参,并对邢台并田-320m水平的疏干量和涌水量进行了预计.     

空气中低浓度铅对女工生殖机能影响的调查

目的：研究长期暴露在低铅环境下女工生殖机能是否受到影响。方法：单盲法问卷调查。结果：在空气铅浓度为0．035～0．048mg／m3作业环境中工作，接铅作业女工的月经先兆症状以及痛经、团经的发生率明显高于非铅作业女工（P＜0．05）。结论：空气中低浓度铅对女工生殖机能有一定影响。     

一类具有逐段常值变元逻辑方程的全局稳定性

考虑一类具有逐段常值变元的逻辑方程，得到了它的正的平衡位置全局稳定的充分条件