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磁性铁氧化物纳米粒子(MIONPs)是近几十年发展起来的一种具有磁靶向性的纳米材料,其以良好的磁靶向性、小尺寸效应、生物相容性等特点在生物医学领域具有很好的应用前景,尤其在药剂学领域的应用已经成为一个重要的研究方向。本文在总结近年来国内外有关多功能MIONPs研究成果的基础上,阐述了各种铁氧化物纳米粒子在药剂学领域的应用,主要包括MIONPs的智能载药靶向控释、对特殊药物的靶向负载、降低身体的多药耐药性(MDR)、加强药物治疗效果、载药穿透血脑屏障(BBB)等;并讨论了当前应用中的优点和不足。最后,展望了其在药物、药剂学领域的应用前景并指出了一些亟待解决的问题。 相似文献
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《高等学校化学学报》2004,(1)
由国家自然科学基金委员会化学科学部主办 ,东北师范大学承办的“新世纪物理化学学科前沿与发展趋势研讨会”于 2 0 0 3年 12月 2~ 5日在长春国际会展中心隆重举行。会议的主题是 :讨论新世纪物理化学学科前沿问题以及未来5~ 10年的发展趋势 ;有针对性地对物理化学领域进行战略研讨 ,进一步调整和确定物理化学领域发展方向 ,以适应本学科迅速发展的形势和国家发展战略的要求。中国科学院院士孙家锺、万惠霖、侯建国、李灿及 70余名国内外物理化学学科及交叉学科的中青年专家应邀出席了会议。国家自然科学基金委员会化学科学部陈拥军副主任… 相似文献
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把握物理化学研究前沿,完善科学基金重点项目领域立项与管理工作 总被引:1,自引:0,他引:1
通过分析日本学术振兴会调研中有关物理化学的光谱学、界面化学和理论化学研究的发展趋势, 总结我国大陆地区科学基金资助的部分重点项目研究领域及其研究进展, 旨在提出今后国家自然科学基金物理化学重点研究领域资助的策略及思考. 相似文献
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磁性铁氧化物纳米粒子(MIONPs)是近几十年发展起来的一种具有磁靶向性的纳米材料,其以良好的磁靶向性、小尺寸效应、生物相容性在生物医学领域具有很好的应用前景,尤其在药剂学领域的应用已经成为一个重要的研究热点。本文在总结近年来国内外有关多功能磁性铁氧化物纳米粒子研究成果的基础上,阐述了各种铁氧化物纳米粒子在药剂学领域的应用,主要是:MIONPs的智能载药靶向控释,MIONPs对特殊药物的靶向负载,MIONPs降低身体的多药耐药性(Multidrug resistance, MDR),MIONPs加强药物治疗 相似文献
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物理有机化学是现代有机化学的主要理论基础,是当今有机化学中最富有活力的领域之一,它是建立在现代物理学和物理化学的基础上,用物理化学的、定量的、数学的方法来研究有机化学. 相似文献
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Aboul-Enein HY 《Biomedical chromatography : BMC》2004,18(1):6-9
A rapid, sensitive and stability indicating high performance liquid chromatographic method was developed and validated for the analysis of dehydroepiandrosterone (DHEA) in pharmaceutical tablet formulation. The analysis was done on a Supelcosil C(18) column (25 cm x 4.6 mm i.d., 5 microm). The mobile phase consisted of methanol:sodium acetate buffer solution (5 g/L):acetic acid (500 mL/L), 57:42:1, v/v/v, adjusted to pH 5 at a flow rate of 1 mL/min. Detection was carried out at a wavelength of 258 nm. The polynomial regression data for the calibration curve showed good linear relationship in the concentration range of 0.2-1 mg/mL with r = 0.9996. The method was validated for precision, accuracy and recovery. The limit of detection was found to be 50 ng/ microL. The method was applied for the analysis of DHEA in its pharmaceutical tablet formulation. The effects of different buffers and alcohols on the retention of DHEA were studied and the role of acetic acid as an organic phase modifier was also investigated. 相似文献
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The computer simulation package SIMAN® is used to carry out Monte Carlo simulations with a view to estimating and predicting the shelf-lives of pharmaceutical products. The input data take account of assay variance and low extents of decomposition typical of data sets submitted by pharmaceutical companies in support of their product licence applications. It is shown that Monte Carlo methods provide estimates of the predicted shelf-life with a narrower and more symmetrical distribution than obtainable with integral methods. The results indicate that the median may be a more reliable estimate of shelf-life than the mean particularly if assay variance is high. Despite its usefulness SIMAN is a difficult package to use and is not generally recommended. 相似文献
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为提高药物制剂工程课程的教学质量,尝试在该课程中的“水难溶性药物口服制剂技术”部分采用PBL教学法,并通过问卷调查的形式对该方法的教学效果进行评价。 相似文献
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《Analytical letters》2012,45(11):2385-2395
Abstract A spectrophotometric method for the determination of some pharmaceutical amides, hydrazides and thiols is described. The method is based on the reaction of the studied drugs with 2,2-diphenyl-1-picryl hydrazyl (DPPH). The latter is employed to abstract a hydrogen atom from the drugs thereby promoting a process of radical coupling. This results in a reduction of the violet colour of DPPH with the formation of the yellow coloured 2,2-diphenyl-1-picrylhydrazine (DPPH2). This fading in colour of DPPH reagent depends on the concentration of the drug being determined. Beer's law is obeyed in the ranges of 1–5 μg/ml (for isocarboxazid and gliclazide), 0.25–2.5 μg/ml (for isoniazid), 0.5–5 μg/ml (for iproniazid), 1–7 μg/ml (for tolazamide), 2–15 μg/ml (for captopril) and 1–6 μg/ml (for sulphathiourea). The validity of the method was tested by analysing the studied drugs in pure form as well as in tablets. Results of analyses were compared statistically with the official or reported methods. 相似文献
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K. Marthi M. Ács G. Pokol K. Tomor K. Eröss-Kiss 《Journal of Thermal Analysis and Calorimetry》1992,38(4):1017-1025
A complex system including thermoanalytical methods, infrared spectroscopy and X-ray powder diffraction for studying physico-chemical behaviour of binary mixtures is described. This system has been tested by investigating binary mixtures of amphetamine hydrochloride salts.These studies have proved that among the selected compounds the primary and secondary amine hydrochloride salts exhibit conglomerate forming tendency, while the tertiary amine hydrochloride salts form molecular compounds (racemates). For thep-fluoro amphetamine hydrochloride the existence of two polymorphic modifications has been detected.The authors are grateful to D. Kozma (Department of Organic Chemical Technology) for the thermoanalytical data of compound III, to Prof. E. Fogassy for the fruitful discussion. 相似文献
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Thermal and dissolution kinetics of ampicillin drug and capsules 总被引:1,自引:0,他引:1
Barręto Gomes A. P. Souza F. S. Macędo R. O. 《Journal of Thermal Analysis and Calorimetry》2003,72(2):545-548
This work aims to compare the thermal decomposition and dissolution kinetics of ampicillin drug and products A, B and C. The thermal decomposition reaction rate constants (kT) were determined by isothermal thermogravimetric method using the classical Arrhenius equations. The dissolution profiles
were obtained using USP 23 method and rate constants (kD) were determined by Kitazawa equation. The results showed correlation between kT and kD can be used in the study of preformulation of drugs and also as a parameter in the studies of pharmaceutical equivalence.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献