高效液相色谱法测定芍药苷含量的不确定度分析

目的对高效液相色谱法测定芍药苷含量的测量不确定度进行分析,以找到影响不确定度的因素,为评价检测报告提供科学依据.方法采用高效液相色谱法测定开元颗粒中芍药苷含量,简化不确定度来源,评估不确定度.结果不确定度结果为0.008 mg·g-1,扩展不确定度为0.31 c.结论测量不确定度可用于芍药苷标准限量的制定;方法的确立对药品质量控制具有重要意义.     

HPLC法测定氟他胺片含量的不确定度分析

目的建立高效液相色谱法测定氟他胺片含量的不确定度分析方法。方法通过建立高效液相色谱法含量测定法的数学模型,找出影响不确定度的因素并对各个不确定度分量进行评估。结果计算各变量的不确定度,由此计算合成不确定度,最终给出测定结果的扩展不确定度。结论建立的方法可用于高效液相色谱法测定药物含量的不确定度分析。     

胃康灵胶囊中芍药苷含量的测量不确定度分析

目的对高效液相色谱法测定胃康灵胶囊中芍药苷含量的测量不确定度进行分析,找出影响不确定度的因素,为评价检测报告提供科学依据。方法采用HPLC法测定芍药苷的含量,并根据有关规定评估其不确定度。结果测量不确定度评估为0.012mg/片。结论本次实验测量不确定度主要由样品不均匀性所引入。     

HPLC法测定盐酸布比卡因注射液含量的不确定度分析

目的:分析高效液相色谱法测定盐酸布比卡因注射液含量的测量不确定度,找出影响不确定度的因素.方法:采用HPLC法测定盐酸布比卡因注射液的含量,并根据有关规定评估其不确定度.结果:用HPLC法测定盐酸布比卡因注射液中盐酸布比卡因的扩展不确定度为(1.4%×Q).结论:测量不确定度可用于盐酸布比卡因注射液的液相方法的评价;测...     

LC-MS法测定猪肉中喹诺酮类药物残留的不确定度评定

目的建立并运用LC-MS法测定猪肉中喹诺酮类药物残留的不确定度评定方法。方法根据《测量不确定度评定与表示》,参考《化学分析中不确定度评定的评估指南》．以环丙沙星为例,分析猪肉中喹诺酮类药物残留测定的不确定度因素,评定环丙沙星残留量测定的不确定度。结果合成标准不确定度为5．8μg·kg-1,扩展不确定度为11．78μg·kg-1。结论建立的不确定度评定方法适用于对Lc-MS法测定猪肉中喹诺酮类药物残留进行不确定度评定。     

食品模拟物中甲醛含量测定的不确定度分析

摘 要 目的：对食品模拟物中甲醛含量的测定进行不确定度评定。方法: 采用柱前衍生 高效液相色谱法测定食品模拟物中甲醛含量。建立数学模型,分析测量不确定度的来源,量化各个测量不确定度分量,合成不确定度。结果: 甲醛含量测定的合成不确定度为1.7%,扩展不确定度为3.4%,测量结果表示为（1.320±0.044 mg·L-1,k=2）。结论: 建立的不确定度评定方法可为柱前衍生 高效液相色谱法测定食品模拟物中甲醛含量的不确定度分析提供参考。     

云南白药酊甲醇量测定的不确定度评估

目的:探讨气相色谱法测定云南白药酊中甲醇量测量不确定度的评估方法.方法:建立云南白药酊中甲醇量测量不确定度的数学模型,通过对检测过程中不确定度来源的分析,找出对测定结果影响较大的因素.结果:影响的最大因素是供试品溶液的进样重复性,采用气相色谱法测定云南白药酊中的甲醇含量的扩展不确定度为0.000 1%,检测结果为0.001 5%±0.000 1%.结论:不确定度评估使云南白药酊甲醇量测定的过程得到控制.     

紫外分光光度法测定氟罗沙星片的含量

氟罗沙星(fleroxacin,Fle)是第三代氟喹诺酮类抗菌药,具有抗菌谱广、作用强、生物利用度高、半衰期长等优点.其含量测定部颁标准(试行)WS-353(X-305)-96采用高效液相色谱法,设备要求一般基层单位不具备.本实验根据氟罗沙星在紫外区有强的吸收峰的特点,采用了紫外分光光度法测定氟罗沙星片的含量.     

气相色谱法测定维生素E软胶囊含量的不确定度评定

目的:探讨气相色谱法测定维生素E含量的不确定度评定方法。方法:通过分析测量过程,确定并简化不确定度来源;利用气相色谱法测定维生素E的方法验证数据及经验数据,通过统计学方法,量化不确定度分量;计算合成不确定度和扩展不确定度。结果:气相色谱法测定维生素E的扩展不确定度为3.6%。结论:测量不确定度可用于维生素E的标准限量的制定;测量不确定度的评定方法的确立建立对于药品、保健品、食品及化妆品质量标准的研究具有一定意义。     

2009—2011年上海中医药大学附属龙华医院住院患者氟喹诺酮类药应用情况及耐药性分析

目的:回顾分析2009—2011年我院住院患者氟喹诺酮类药应用及耐药情况,促进合理用药。方法:调查2009—2011年我院氟喹诺酮类药用药量、用药金额、用药频度(DDDs)、耐药情况等,并进行统计分析。结果:帕珠沙星、左氧氟沙星、莫西沙星为我院目前使用最多的氟喹诺酮类药,氟喹诺酮类药对革兰阴性菌耐药情况严重,临床使用中存在诸多不合理用药。结论:氟喹诺酮类各品种有不同的特点,临床应根据药物特性合理选用。氟喹诺酮类药耐药情况严重,应进一步加强监管以促进合理用药。     

Blockade by phenoxybenzamine of the contractor response produced by agonists in the isolated ileum of the guinea-pig

1. The effects of various concentrations of phenoxybenzamine (dibenzyline) on the contractor response of the isolated ileum of the guinea-pig were investigated. The agonists tested were histamine, 5-hydroxytryptamine (5-HT), acetycholine and potassium chloride.2. In addition, uptake of (14)C-phenoxybenzamine into the ileum was determined as a function of antagonist concentration. The uptake increases sharply at concentrations above 10(-6) g/ml, (3x10(-6)M) and was not saturable at any concentration tested.3. In the presence of low concentrations of phenoxybenzamine, the dose-response curve for histamine undergoes a parallel shift of about 0.5 log units. At higher concentrations of phenoxybenzamine the maximum response is depressed. In the case of the other agonists, the maximum response is depressed as soon as any blockade becomes apparent.4. The ease of blockade with phenoxybenzamine is 5-HT >/= histamine> acetylcholine >/= potassium chloride.5. These results do not lend support to the ;spare-receptor' hypothesis and may be better explained by the ;two-site' hypothesis of Moran & Triggle (1970).6. It may further be concluded that the successful antagonism of potassium-induced contractions in this preparation lies in the ability of phenoxybenzamine to prevent the action of released acetylcholine. In the case of the contraction induced by 5-HT, phenoxybenzamine probably interferes with the 5-HT receptor responsible for neuronal release of acetycholine.     

Synergism by caffeine and by cocaine of the motor control deficit produced by midazolam

To evaluate the effects of caffeine and cocaine on the impairment of discriminative motor control produced by midazolam, rats were trained to hold a force transducer operated with a paw so that it remained between upper and lower limits of a force band for a continuous 1.5-s period to deliver each food pellet. Acute doses of 3 mg/kg midazolam SC impaired motor performance. Except for one animal, caffeine (10-40 mg/kg IP) had little or no effect on performance, while cocaine (3.75-22.5 mg/kg IP) produced dose-related impairment. When each dose of caffeine was combined with 3 mg/kg midazolam, a marked synergism in motor performance impairment occurred. Cocaine plus midazolam produced mainly an additive synergism. The conspicuous synergistic action of caffeine on the motor control deficit produced by midazolam contrasts with the typical antagonism found between the benzodiazepines and methylxanthines when performance is evaluated by psychomotor tests not requiring fine motor control.     

Transient supression by stress of haloperidol induced catalepsy by the activation of the adrenal medulla

Rats were injected with haloperidol (0.5–1.0 mg · kg^–1). When the catalepsy score was almost maximal (60 s, measured by the bar-test), the rats were handled, exposed to cold (3° C) or immobilized. After each of these stress procedures the catalepsy was significantly reduced. Handling of adrenalectomized rats gave no such reduction. Infusion of adrenaline (10 nmol·kg^–1, given in 15 s), in contrast to that of isoprenaline and phenylephrine (both the same concentration as adrenaline) also reduced the haloperidol induced catalepsy. These findings indicate that neuroleptic catalepsy in rats is not only mediated through central but also through peripheral mechanisms, e.g. by the adrenal medulla.