Objective to evaluate the reliability of a method of measuring the total fluoride in fluoride-containing toothpastes with acid diffusion and fluoride selective electrode.
目的探讨冷酸解离-氟离子电极法测定含氟牙膏中总氟含量的可行性和可靠性。
Conclusion the amount of total fluoride in the calcium containing toothpaste can be detected simply and accurately measured by acid diffusion and fluoride selective electrode.
结论采用冷酸解离-氟离子电极法测定单氟磷酸钠与钙类摩擦剂配伍的含氟牙膏中的总氟含量，具有准确可靠、简便易行的优点。
Objective: To find out the relationship of the hyaluronic acid (HA) overexpression in peritoneal fluid in patients with the gastric cancer and the invasion or diffusion of the cancer.
目的：检测胃癌患者腹腔液中透明质酸（HA）水平及其与胃癌侵袭、扩散之间的关系。
Acid flow and reaction in a wormhole was studied by modeling the wormhole as a cylinder and numerically solving the mass balance equation that describes acid transport by convection and diffusion.
将酸蚀蚓孔简化为单圆管模型，酸液流动反应物质平衡方程反应传质和扩散作用。
Conclusion: The fluorouracil release from microspheres with polylactic acid as carriers was controlled by drug diffusion and polymeric erosion.
结论：氟尿嘧啶微球体外释药以药物扩散和材料降解为主。
The absorption of ferulic acid is a first-order process with the passive diffusion mechanism.
阿魏酸在肠道的吸收呈一级动力学过程，吸收机制为被动扩散。
When increasing the quantities of citric acid, there was a trend favoring the mechanism of diffusion and the dissolution rates increased.
随着枸橼酸用量的不断增加，药物释放机制更靠近扩散过程，且释药速度逐渐增加。
The konjac glucomannan-acrylic acid copolymer (KAC), a kind of polyelectrolyte can change the local ambient moisture effectively by diffusion moisture-absorption characteristics.
魔芋葡甘聚糖接枝丙烯酸共聚物(KAC)作为一种高分子电解质，其特有的扩散吸湿特性可以有效改变局部环境的干燥状态。
Cathodic reaction rate at open circuit Potential for iron in sulfuric acid containing dichromate ion was controlled by both electron transfer process and diffusion process.
铁在含有一定浓度重铬酸根的硫酸中，自腐蚀状态下的阴极反应速率受重铬酸根阴极还原电子转移过程与扩散过程共同控制。
When the weak acid is given orally, the concentration gradient for un-ionized drug between stomach and plasma tends to be large, favoring diffusion through the gastric mucosa.
当这种弱酸性药物经口服给药时，胃与血浆之间的非解离型药物浓度梯度很大，从而有利于透过胃粘膜扩散。
Retinoic acid (RA) nanoparticle suspensions with different concentrations were prepared by solvent-diffusion method in aqueous and freeze-drying.
采用溶剂分散法制备了不同药物质量浓度的维甲酸纳米颗粒混悬剂，并对其进行了冷冻干燥；
Retinoic acid (RA) nanoparticle suspensions with different concentrations were prepared by solvent-diffusion method in aqueous and freeze-drying.
采用溶剂分散法制备了不同药物质量浓度的维甲酸纳米颗粒混悬剂，并对其进行了冷冻干燥；
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