一种使高分子与纳米颗粒间的共轭物稳定的方法，通过在高分子链已经吸附到纳米颗粒表面后在纳米颗粒表面形成薄的加强层来实现。稳定的共轭物可在大范围的应用中使用，例如体外诊断、体内成像和治疗，这些应用需要在各种苛刻条件或严酷条件下进行。
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本发明涉及一种提高免疫力的中药及其制备方法。其特点是将西洋参粉碎成粗粉，乙醇浸泡后再用乙醇渗漉，回收乙醇，得浸膏；另取白术和何首乌，加水浸泡，换用乙醇渗漉，减压回收乙醇，得浸膏；再取茯苓和枸杞子，加水煎煮，合并煎煮液，减压浓缩，用乙醇醇沉，弃上清液，取沉淀物得浸膏；将上述三种浸膏合并干燥，粉成细粉，就制成了本发明药物的活性组分。
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Faced with the problem of the present invention: For the catalyst carrier, not only requires a proper specific surface area and pore size distribution, but also to support the mechanical strength and thermal stability is also very strict requirements. Furthermore, the catalytic composition and prope.....
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希望有一种能针对一组不同的β－内酰胺类抗生素筛选细菌以鉴定β－内酰胺酶的工具。一种将指示分子导入β－内酰胺酶而形成的生物传感器可达到该目的，但要求导入的指示分子基本上不会削弱蛋白质结合的亲和力，以保证较高的灵敏度。本发明研发了一种经修饰的β－内酰胺酶，该β－内酰胺酶的Ω环上或Ω环的外侧但接近其活性部位的残基被活性残基置换。
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Multidrug resistance (MDR) is a major problem in cancer chemotherapy. The best characterized resistance mechanism is the one mediated by the over- expression of drug efflux transporters, permeability-glycoprotein (P-gp), which pump a variety of anticancer drugs out of the cells, resulting in lowered.....
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