نتایج جستجو برای: pharmaceutical sample
تعداد نتایج: 468649 فیلتر نتایج به سال:
A simple high-performance thin-layer chromatographic (HPTLC) method for separation and quantitative analysis of losartan potassium, atenolol, and hydrochlorothiazide in bulk and in pharmaceutical formulations has been established and validated. After extraction with methanol, sample and standard solutions were applied to prewashed silica gel plates and developed with toluene–methanol–triethylam...
For several years, near-infrared spectroscopy (NIRS) has become an analytical technique of great interest for the pharmaceutical industry, particularly for the non-destructive analysis of dosage forms. The goal of this study is to show the capacity of this new technique to assay the active ingredient in low-dosage tablets. NIR spectroscopy is a rapid, non-destructive technique and does not need...
When using shear testing to determine wall friction of pharmaceutical particulate systems, it is crucial to measure at the correct wall normal stress. By comparing data obtained at a wall normal stress of 1000 to 200 Pa, the effect of the applied stress on the accuracy and precision of the method was assessed. INTRODUCTION When powder flows under gravity from a hopper, it follows one of two pat...
Introduction Background and literature sources Specialized journals Internet addresses Previous reviews Fundamentals of the technique Principles of NIR spectroscopy NIR diffuse reflectance spectroscopy Operational procedures in the NIR Mathematical processing of signals Qualitative analysis Identification and qualification of raw materials and pharmaceutical preparations Determination of homoge...
Current standards and regulations demand the pharmaceutical industry not only to produce highly pure drug substances, but to achieve a thorough understanding of the impurities accompanying their manufactured drug substances and products. These challenges have become important goals of process chemistry and have steadily stimulated the search of impurities after accelerated or forced degradation...
In this paper we deal with the capital structure problem in the pharmaceutical industry that has recently changed its business model because of the biotechnology advent. We propose a set of hypotheses that explains the drivers of capital structure decision in this industry and then we test their validity over a sample of 50 biopharmaceutical firms. The obtained results show that pecking order t...
A new, simple and repeatable liquid chromatography method with charged aerosol detection (LC-CAD) for the determination of gentamicin sulphate composition and related substances has been developed. Gentamicin lacks of chromophores, therefore its determination is quite problematic. Using a universal CAD enables to achieve good separation without sample derivatization. Mass spectrometry was emplo...
The cancer community understands the value of blood profiling measurements in assessing and monitoring cancer. We describe an effort among academic, government, biotechnology, diagnostic, and pharmaceutical companies called the Blood Profiling Atlas in Cancer (BloodPAC) Project. BloodPAC will aggregate, make freely available, and harmonize for further analyses, raw datasets, relevant associated...
You might know the address of IJPR editorial office; it's in Vali-e-Asr Street just about two kilometers from Vanak square. Vali-e-Asr is one of the longest main streets in Tehran. Tehran is one of the biggest capitals in the world with a population of more than 14 million. The earth is home to more than six billion human beings with huge diverse ethnic backgrounds. Starting from the IJPR offic...
You might know the address of IJPR editorial office; it's in Vali-e-Asr Street just about two kilometers from Vanak square. Vali-e-Asr is one of the longest main streets in Tehran. Tehran is one of the biggest capitals in the world with a population of more than 14 million. The earth is home to more than six billion human beings with huge diverse ethnic backgrounds. Starting from the IJPR offic...
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