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Effect of Dry Binders on Mechanical Properties of...
Effect of Dry Binders on Mechanical Properties of Ketoprofen-Cyclodextrin Extended Drug Release Systems
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In this paper, the mechanical properties of extended drug release systems were studied. A binder is a material that is added to a formulation in order to improve the mechanical strength of a drug release system. The drug release systems investigated were cylindrical tablets containing mixtures of various ketoprofen types and binders. Among the binders used were a series of different molecular weights of kollidon va 64, carbopol 971 pnf, hydroxypropyl methyl cellulose and sodium carboxyl methyl cellulose. The samples were made in the form of cylindrical tablet of about 9 mm in diameter and containing different mixtures of drug substances and excipients in three formulations. Mechanical parameters such as hardness, tensile stress and friability were studied in order to determine how they are influenced by binder and how it influences wetting and disintegration of tables.
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Authors: Hee Jin Kim, Yong Sul Song, Won Wook Park, Keun Yong Sohn
Authors: Chou Fan, Wei Hao Xiong, J. Wei, Ping Fa Feng, Y. Lei, Z.G. Liang
Authors: Hyung Mi Lim, Ji Sook Jung, Bong Young Kim, Seung Ho Lee
Authors: Ming Yong Shu, Hai Ying Yin, Guang Hui Liu
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愿你一切如意
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从此你走你自己的路
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介绍： 作曲 : ANU
作词 : ANU
音乐制作人：旦旦
曼陀铃：索朗
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?????????????????
愿你一切如意
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愿你从此得以幸福.
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从此你走你自己的路
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从此你追求你的幸福
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是顺应命运的安排
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oh ga g aga 就这样吧
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愿你快乐！
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愿你一切如意！
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愿你从此得以幸福.
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从此我要走我自己的路、
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我们来自相同起点，
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命运的安排却是各异。
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如果未来会天各一方愿我们会互相祝福
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会记得你的
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带着一切继续踏上寻梦之旅
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oh gagaga hlllhll
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hllhll 就这样吧
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Assessment of background radiation fin playgrounds of selected basic schools in the GA east municipal district, Accra, Ghana
Taapopi, Erastus E.; Faanu, A.; Dampare, S.B.
A study has been carried out in the play grounds of selected basic schools in the Ga East municipal district of Accra, Ghana, to determine the exposure of school children to the radiation emitted by Naturally Occurring Radionuclide Materials and trace elements. The activity concentrations of different radionuclides were determined using high purity germanium (HPGe) detector. The average activity concentrations of 238U, 232Th and 40K were found to be19.8±8.7, 29.1±16.3 and119.4±97.9 Bq ·kg-1 respectively. The average annual effective dose calculated from these activity concentrations was 0.04mSv which is below the dose limit of1 mSv/year recommended by the International Commission on Radiological Protection (ICRP) for public exposure control. Radiological hazard assessments were carried out and the Rn-222 concentration and exhalation rate were estimated to be 32.13 kBg ·m-3 and 0.016 Bg ·m-2 · s-1 respectively. These values are with in the world average values..
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